Science method

Biodiversity Informatics - Science method

Explore the latest questions and answers in Biodiversity Informatics, and find Biodiversity Informatics experts.
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In your opinion, can the new technologies of Industry 4.0, including, above all, artificial intelligence, machine learning, deep learning applied in combination with large sets of data, information and knowledge collected and processed on Big Data Analytics platforms, help in the satellite analysis of the rate of biodiversity loss of the planet's different natural ecosystems?
As part of the technological advances that have been taking place in recent years, which are also rapidly advancing as part of the development of ICT information technologies and Industry 4.0, more and more sophisticated analytical instruments and research techniques are being developed to carry out increasingly complex, multifaceted and Big Data-based analyses of the various processes taking place in nature and to obtain increasingly precise results from the research conducted. With the combination of ICT information technology and Industry 4.0 with satellite analysis technology, the analyses of changes in the biodiversity of the planet's various natural ecosystems carried out using satellites placed in planetary orbit are also being improved. Taking into account the negative human impact on the biodiversity of the planet's natural ecosystems that has been taking place since the beginning of the development of the first technological and industrial revolution, and especially in the Anthropocene epoch from the mid-20th century onwards, there is a growing need to counteract these negative processes, a need to increase the scale and outlays allocated to the improvement of nature conservation systems and instruments, including the protection of the biodiversity of the planet's natural ecosystems.
Improving nature conservation and biodiversity protection systems also requires cyclic surveys of the state of biodiversity of individual terrestrial and marine natural ecosystems of the planet and analyses of progressive environmental degradation and the rate of biodiversity loss. In the situation of obtaining more precise results of research concerning changes in the state of the natural environment and the rate of loss of biodiversity of particular terrestrial and marine natural ecosystems of the planet occurring in various climate zones, changes in the state of the climate and diagnosing key civilisational determinants generating those changes, it is possible to apply specific actions and systemic solutions within the framework of counteracting negative processes of degradation of the natural environment and loss of biodiversity within the framework of improving nature protection techniques more effectively and adapted to the specific nature of a given local biosphere, climate conditions, diagnosed processes of the aforementioned changes but also economic factors. In this connection, the technology of artificial intelligence, which has been developing particularly rapidly in recent years, can also prove helpful in the process of improving the planning, design, management and restoration of natural ecosystems, taking into account a high degree of sustainability, biodiversity and naturalness, i.e. the restoration of natural ecosystems that existed in a specific area centuries ago. In the process of the aforementioned restoration of sustainable, highly biodiverse terrestrial and marine natural ecosystems of the planet, many primary factors must also be taken into account, including geological and climatic factors as well as the modifications previously applied to the area by man concerning geology, land irrigation, drainage, microclimate, soil quality, environmental pollution, the presence of certain invasive species of flora, fauna, fungi and microorganisms. Therefore, the process of planning, design, management and restoration of biodiverse natural ecosystems should take into account many of the above-mentioned factors that are a mix of natural biotic, climatic, geological and abiotic factors and changes in these factors that have taken place over the last centuries or millennia, i.e. changes and side-effects of the development of human, unsustainable civilisation, the development of a robber economy based on intensive industrial development with ignoring the issue of negative externalities towards the surrounding natural environment.
Considering how this should be a complex, multifaceted process of planning, designing, arranging and restoring the planet's biodiverse, natural ecosystems, the application in this process of the new generations of Industry 4.0 technologies, including, above all, artificial intelligence based on large sets of data, information and knowledge concerning many different aspects of nature, ecology, climate, civilisation, etc., collected and processed on Big Data Analytics platforms, can be of great help. On the other hand, artificial intelligence technology combined with satellite analytics can also be of great help in improving research processes aimed at investigating changes in the state of the planet's biosphere, including analysis of the decline in biodiversity of individual ecosystems occurring in specific natural areas and precise diagnosis of the rate of the aforementioned negative changes resulting in environmental degradation and the key determinants causing specific changes.
I will write more about this in the book I am currently writing. In this monograph, I will include the results of my research on this issue. I invite you to join me in scientific cooperation on this issue.
Counting on your opinions, on getting to know your personal opinion, on an honest approach to discussions in scientific problems, and not on ready-made answers generated in ChatGPT, I deliberately used the phrase "in your opinion" in the question.
In view of the above, I address the following question to the esteemed community of scientists and researchers:
In your opinion, can the new technologies of Industry 4.0, including especially artificial intelligence, machine learning, deep learning applied in combination with large datasets, information and knowledge collected and processed on Big Data Analytics platforms help in the satellite analysis of the rate of biodiversity loss of the planet's various natural ecosystems?
Can artificial intelligence and Big Data Analytics help in the satellite analysis of the rate of biodiversity loss of the planet's different natural ecosystems?
What do you think about this topic?
What is your opinion on this subject?
Please respond,
I invite you all to discuss,
Counting on your opinions, on getting to know your personal opinion, on an honest approach to discussing scientific issues and not ChatGPT-generated ready-made answers, I deliberately used the phrase "in your opinion" in the question.
The above text is entirely my own work written by me on the basis of my research.
I have not used other sources or automatic text generation systems such as ChatGPT in writing this text.
Copyright by Dariusz Prokopowicz
Thank you very much,
Warm regards,
Dariusz Prokopowicz
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Yes! I already said AI and DA is the way of the future in ALL spheres of research! :)
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How can new ICT information technologies and Industry 4.0 help improve systems for monitoring the state of environmental pollution, the state of biodiversity of natural ecosystems, the state of the biosphere and the planet's climate?
On 16.11.2022 at the UN Climate Summit COP27 in Sharm el-Sheikh, Egypt, debates and speakers address, among other things, the issue of the loss of biodiversity of the planet's natural ecosystems caused by the increasingly rapid process of global warming caused by anthropogenic factors, i.e., primarily by civilization's greenhouse gas emissions. Due to the accelerating deforestation of forests, the burning and clearing of rainforests to create more areas to grow crops for export, the planet's biodiversity is rapidly declining. In addition, also due to the increasing scale of land and sea pollution, oceanic pollution and the accelerating process of global warming, the level of biodiversity of the planet's natural ecosystems is rapidly declining. Due to the predatory management of burning and clearing of the Amazon rainforest, the area of these natural boreal forests described as the natural lungs of the planet has been declining rapidly in recent years. In addition, due to the greenhouse effect, ocean water temperatures are also rising and coral reefs, including the Great Barrier Reef in Oceania, are dying. The decline in biodiversity noted in recent years correlates with the rapid mass die-off of many species of flora and fauna. In view of the above, it is necessary to urgently stop forest deforestation, including the burning and clearing of tropical rainforests and also other forest formations and natural ecosystems located in all climate zones. It is necessary to increase the scale of implementation of afforestation programs for civilization-degraded areas, post-mining heaps, wastelands, and the creation of additional urban parks in urban agglomerations. Besides, it is necessary to urgently carry out a full green transformation of the economy, including a pro-climate transformation of the energy sector by replacing the dirty energy of burning fossil fuels with clean energy based on renewable and emission-free energy sources. With the rapid development of ICT information technology, Industry 4.0, satellite analytics, 5G big data transfer, etc. as important elements of the current fourth technological revolution, it is possible to improve techniques and systems for monitoring the state of biodiversity of natural ecosystems.
In view of the above, I address the following question to the esteemed community of researchers and scientists:
How can the new information technologies of ICT and Industry 4.0 help improve systems for monitoring the state of environmental pollution, the state of biodiversity of natural ecosystems, the state of the planet's biosphere and climate?
What is your opinion on this issue?
Please answer with reasons,
I invite everyone to join the discussion,
Thank you very much,
Warm regards,
Dariusz Prokopowicz
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New ICT information technologies and Industry 4.0 can help improve systems for monitoring the state of environmental pollution, the state of biodiversity of natural ecosystems, the state of the biosphere, and the planet's climate in several ways. These technologies can be used to create computer models that predict the impact of human activities on the environment. This could be used to identify areas of pollution and biodiversity degradation before they become too severe. Additionally, sensors and IoT devices can be deployed to measure air quality, water quality, and other environmental factors in real-time. This data can then be used to better understand the current state of the environment and to develop strategies for mitigating environmental damage. Finally, big data analytics can be used to identify patterns and correlations between environmental factors, which can help identify the sources of pollution and the factors driving biodiversity loss.
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What kind of scientific research dominate in the field of The importance of biodiversity, the environment, environmental protection?
Please reply. I invite you to the discussion
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Predictive and Prescriptive Analyses of Flora and Fauna towards Environmental Protection Indentified Locations
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-Inaturalist
-Orthoptera Species File (OSF)
-Tettigoniidae (Orthoptera) species from Argentina and Uruguay
-The Catalogue of Life (COL)
-Global Biodiversity Information (GBIF)
-Berkeley Ecoinformatics Engine (Ecoengine)
-Encyclopedia of Life (EOL)
-Integrated Digitized Biocollections (IDigBio)
-NBNatlas
-System of Information on Brazilian Biodiversity (Sibbr)
-Ocean Biodiversity Information System (OBIS)
-VertNet
I need more suggestions please!
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The following RG link is also very useful:
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The current technological revolution, known as Industry 4.0, is determined by the development of the following technologies of advanced information processing: Big Data database technologies, cloud computing, machine learning, Internet of Things, artificial intelligence, Business Intelligence and other advanced data mining technologies.
In view of the above, what kind of information technologies from the Industry 4.0 range and how will they help to protect the natural environment and biodiversity?
Please reply
Best wishes
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In my opinion, in recent years, the possibilities and needs of using new information technologies, ICT, Internet, Industry 4.0 in the field of improving nature protection systems have been growing. For example, these technologies can be combined with satellite analytics of changes in the state of biodiversity of natural ecosystems, changes in the level of pollution of the natural environment and other types of impact of civilization development on nature.
I invite you to the discussion,
Greetings,
Dariusz Prokopowicz
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What kind of scientific research dominate in the field of Protection of biodiversity and natural ecosystems?
Please, provide your suggestions for a question, problem or research thesis in the issues: Protection of biodiversity and natural ecosystems.
Please reply.
I invite you to the discussion
Thank you very much
Best wishes
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… the practical integration of food security and biodiversity conservation is most challenging … Fischer, J., Abson, D. J., Bergsten, A., Collier, N. F., Dorresteijn, I., Hanspach, J., ... & Senbeta, F. (2017). Reframing the food–biodiversity challenge. Trends in Ecology & Evolution, 32(5), 335-345.
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Can you share any interesting photo concerning butterflies you'd met in nature in your country or during your voyages abroad?
Can you also comment it shortly with a place and date you'd spot it? Also its name. If you are not sure you may ask other participants about the specy name, instead.
E.g.: In May 2019 I'd spend my holidays in Greece, and met there the above Epicallia villica, the cream-spot tiger, a moth of the family Erebidae.
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صورة جميلة لإحدى الفراشات النادرة
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Can you share any interesting photo concerning insects you'd met in nature in your region, country or during your voyages?
Can you also comment it shortly with a place and date you'd spot it? Also its name. If you are not sure you may ask the other participants about the specy name, instead.
During one of my holidays in Dolomiti I've spot the above Panorpa sp. (Mecoptera: Panorpidae) at wild flower of lily in Cortina d"Ampezzo Valley.
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WileyInsect Biodiversity: Science and Society, Volume 1, 2nd Edition
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Dear Friends
Is there a simple method for evaluating ecoSystem servcices of Urban Tree and any research on linking Ecosystem Services to Urban Corridor Management?
Best Regards
Olivier
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Hi Oliver,
I would suggest reading ( ) and the references therein, as this is a very good review of ecosystem services provided by urban hedges that likely has a lot of crossover with trees in urban environments.
Best wishes,
Ethan
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Virgin nature rapidly invides our abandon constructions as demonstrates photography including the attached photo. How long could survive traces of our civilisation if its development would crush? Does not invasive species like heracleum, biodiversity, and especially plant biodiversity, plants conservation, plants biology, plant ecology, botany, flowers biology, even actinobacteria and microbiology, phytogeography, vegetation ecology, biodiversity informatics tell us that it would proceed very rapidly?
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Probably all information stored in silico will be lost after a short time. However a lot of plastic items will give for a long time (as long as plastic survives) the impression that our civilization was essentially based on such polymers. In addition many remains of road constructions and dams will survive for millennia
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I am currently looking for Invasive Alien Plant Species (IAPS) Occurrence-Data for mainly the Tropics including Africa, South America, & Asia tropical regions. If you know any research-networks or sources (published and/or Unpublished) of this data, please point me to it. The data would be mainly used for IAPS - Species Distribution Modelling.
NB: I have already gone through most of the data from International Databases (e.g.GBIF and GISD), however.. it is abit lacking.
I thank you in advance for your responses.
Sincerely,
NM
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GBIF provides data worldwide https://www.gbif.org/
Look also to previous analogous question's answers
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According to Global Biodiversity Information Facility (GBIF), the following nine major groups: Animalia, Archaea, Bacteria, Chromista, Fungi, Plantae, Protozoa, Viruses and Incertae Sedis are alphabetically arranged. What is the correct order (not the alphabetical order) of the phylogeny and evolutionary hierarchy of such major groups?
Best wishes and regards.
Furhan T. Mhaisen
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Dear Dr. Olsson:
Thank you for your explanation. It seems that there is no way for a correct order for the given groups and hence the alphabetical order of listing may solve the situation.
Best wishes and regards.
Furhan T. Mhaisen
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I have been working on a project to collate species occurrence data inherent from unpublished student theses in an integrated database (currently published in GBIF) and still working on a systematic protocol of data validation. Expert review is really subjective and I got many findings that said "expert" estimation were not always more consistent than amateurs, student, or even public enthusiasts (feel free to message me for the papers I collected regarding this), thus my team was still struggling to find a way. Our current method is just independently evaluate the scientific names through taxonomic checklists and the geographic distribution were validated through available published literature mentioning the geographic distribution of each species. We occasionally ask experts but as we are working on many understudied taxa and geographical area, there was not many around.
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I suppose it all depends on your study species. For the most part, I think experts in most fields are able to identify the species they're most knowledgeable about with relatively high accuracy, given they have enough information in the photo and geographic location to do so.
It's usually when someone gets a bit overzealous and identifies something to the species level when given minimal information and just going off of an educated guess for species most likely to be in the area.
It also depends on what the question for your study is. If you're doing an SDM for a species, you could always thin the records to about 100 and then self-verify (if you're confident in your abilities to do so). You could see if the species occurrence data has any corresponding NCBI molecular data and use DNA to verify species.
If you're using a dataset of 1000 + (or some other number where it isn't feasible to self verify each account) from inaturalist, you could query the data with >3 verified ID agreements with no "maverick" or disputed IDs. The likelihood of obtaining false positives should decrease with user agreement on a species identification.
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In the context of climate change predicted for the 21st century, which is a derivative of the ever-faster global warming process, is the conservation of biodiversity of entire biological ecosystems the key issue of nature protection?
Please reply
Thank you very much
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Actually your question says loudly that the answer is hide in it. Yes, we all want natural environment with healthy biodiversity. But who cares ? our biodiversity degrade day by day. Many species are disappeared due to loss environmental conditions. 1st thing is that the main reason of loss biodiversity is deforestation for personal and govt. benefits. 2nd is the destruction of habitats. last few decades the earths temperature is rise. if we not controls our behavior to destruction then we not conserve our biodiversity.
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I am pretty confused about the use of taxonomic diversity and taxonomic distinctness.
Taxonomic diversity can be defined as the average taxonomic path between randomly chosen individuals. It takes into consideration taxonomic differences and heterogeneity (species richness and evenness). Why should we not just decide to use taxonomic diversity instead of Simpson’s index/Shannon index when we know the taxonomy of each species? Moreover, isn’t calculating the taxonomic diversity across different areas more appropriate than other beta diversity indices such as Jaccard Similarity?
Taxonomic distinctness can be defined as the average taxonomic path between two individuals from different species. I don’t understand the point of this index. It doesn’t give us information about the heterogeneity (which taxonomic diversity does), but at the same time it is not an index of the how the different species are related taxonomically (which is delta+). Which information gives us? When is the use of taxonomic distinctness more appropriate than the one of taxonomic diversity? 
Thank you for anyone who will help, I really appreciate it!
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The taxonomy is the identification and description of taxa with the objective of locating them in a system. Biological diversity is by definition the analysis of variability at any scale, be it ecological or biogeographic (to point out the two extremes). The taxonomy is born from the need to identify living beings and find an order that allows to develop in a coherent way the studies in any branch of biology.
In biological diversity, the objective is to establish the state of relations between living beings in a given territory, determine the degree of balance of these relationships and their causes. This with the objective of determining the changes of the biota in each territory. Therefore, the taxonomy is in some way to the biological sciences, all of them, like metrology to physics.
The biological diversity is based on three fundamental pillars: alpha, beta and gamma. Interestingly, the best-known indices of biological diversity are those corresponding to alpha diversity. These study the equilibrium relations between the living components of a given territory (community, landscape, biome, etc.). But most of the time, beta diversity is ignored, that is, the degree of relationship between a set of territories (the amount and form in which taxa share), and most ignore that the patterns that determine that diversity Beta depending on the individual combinations is the gamma diversity.
When we study the genesis of taxonomy, we discover that this science arises from the need to order the supposed chaos in the associative identification of living beings. But the need arose from very ancient in all civilizations and biological diversity was born from ecology. Linne uses the conceptions of Greek philosophy, but the Mayans, the Chinese, the Hindus had theirs. Whittaker, father of biological diversity, part of his studies in the plant communities of a mountain and deepening, found that the relationships there were much more complex and difficult to interpret than he had thought
It is easy to understand that biological diversity is a science with its own paradigms, where taxonomy provides the system that allows it to develop. Therefore, they have absolutely nothing to do with each other
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Understanding what drives the large-scale pattern of biodiversity is the vital part of macroecology and conservation. The basis of this study is obtaining high-quality data of abiotic /biotic variables. Nowadays, we are in the big-data era, there are a lot of resources for available data. However, the quality and resolution of these data are uneven which may let many novices feel confused. Therefore, we could discuss this topic here.
DON"T HESITATE TO POST RESOURCES of these HIGH QUALITY and OPEN ACCESS data that you know. Please also provide its time period and resolution.
I wrote a list of several resources on my website that I have knew until now for reference:
Here are some example:
WorldClim (v1, v2): http://www.worldclim.org/
  • widely used in SDM
  • [T] 1970~2000, [R] 30 arcsec
  • historical/current/future
  • a new dataset of climate
  • [T] 1979~2013, [R] 30 arcsec
  • historical/current/future and time series (very interesting)
  • can select specific months and models 
  • multiple remote sensing data for biodiversity study (topography, habitat heterogeneity, consensus land cover, cloud cover climatology and freshwater environmental variables)
  • topography ([R] 1km); habitat heterogeneity ([R] 30 arcsec); consensus land cover ([R] 30 arcsec); freshwater env. ([R] 1km)
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This technical report has a lovely appendix listing a plethora, yes I said plethora, of available datasets you may be interested in.
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Hi,
I have used RDP classifier in my pipeline to assign 16S sequence to their corresponding taxonomy.
I'd like to know if a similar function would exist to assign CO1 (cytochrome oxydase 1) sequences to their corresponding taxonomy.
Another way to solve my problem would be to download a database containing only CO1 sequence files (wether from BOLD or Genbank) and use the Usearch function but I was unable to find such a database yet.
many thanx for your help!
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For anyone still interested in this question, you could also try the Metaxa2 classifier. A recent paper describes new software for training Metaxa2 on any genetic marker (https://doi.org/10.1093/bioinformatics/bty482). We recently used this software to create an arthropod COI database (https://peerj.com/articles/5126/).
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What is the best method to estimate the species richness of birds if we have multiple bird surveys from a single site?  Same method  (line transect) is employed, with same effort in each survey.
Is species accumulation curve useful in this case, considering each survey as an effort?
And should we use the same curve for migratory species (which are only at that site for few months) and resident species, or we should use different curves for both?
 
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In the following manuscript an interesting and very efficient method is proposed, because an integrated methodology of sampling, rarefaction and extrapolation is proposed to compare the species richness of a set of communities based on samples of equal integrity (as measured by the coverage sample) instead of equal size. This method produces less biased comparisons of wealth between communities, and manages it with a smaller total sampling effort. In the work hypothetical and real examples are proposed to demonstrate these advantages.
Chao, A., & Jost, L. (2012). Coverage‐based rarefaction and extrapolation: Standardizing samples by completeness rather than size. Ecology, 93(12), 2533-2547.
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I need to estimate effective population size of a grasshopper species using AFLP data. However, the methods I reviewed so far only work for SNP or microsatellite data. Is there any tool/software that you used for AFLP? Thanks.
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Do you think all your individuals are from the same cohort (e.g. same brood year)? If so and you don't think there are any parent-offspring relationships in your dataset, you could use COLONY. It takes dominant data and estimates Ne using a sibship based approach. The author recently published a study suggesting it is more accurate than other methods under certain conditions and robust to HWP violations.
Wang, J. (2016) Individual identification from genetic marker data: developments and accuracy comparisons of methods. Molecular Ecology Resources 16: 163-175.
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Hello there!
We have been working on sequencing proteins from different sampling points, located a few kilometers away one from another. Now we want to make an analysis to see if there is any significant difference in these and environmental factors among the sampling points due to their geographical location (distances among sites), but we do not know which method use.
I think that any method that should apply for DNA sequences will work on protein data, am I wrong? BTW, we are working with Metaproteomics data.
Thanks a lot
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Thanks Sean, we have into account this information.
Maybe RDA will be an interesting analysis, however, I thought something more specific about distance and sequence dissimilarity could be done...
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Geographic data (in the form of latitude/longitude co-ordinates) are severely lacking for many specimens/species within the Barcode of Life Data Systems (BOLD). Interspecific (nearest-neighbour) distances can likely serve as a good proxy, but there is a high degree of uncertainty.
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You may look into the functions in the R package biogeoBEARS. Some of the functions therein maybe helpful. You will probably still need to write your own functions to accomplish your specific goals.
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due to the each taxonomic level is important in the distinctness indices I need to take the best decision and I have few organisms in my database.  
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Use "Morphospecies"_ makeup categories based on morphology and define them
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I have a 3-dimensional NMDS of avian community composition, and I have built predictive models linking site scores to environmental covariates (one for each axis/dimension, so three models) to make spatial predictions across a landscape that estimate a given site's position within the ordination combining predictions for each dimension.  Given this, I was hoping to then be able to estimate a given site's avian composition based on it's position (sites scores) within the ordination.  I am familiar with OMI, but was hoping to use my existing models to extract or estimate community composition given that I know the site's site scores.
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Thanks Andrew and Susanne for your responses. In reading the papers on CoCA I found this:
Guisan, A., S. B. Weiss, and A. D. Weiss. 1999. GLM versus CCA spatial modeling of plant species distributions. Plant Ecology 143:107–122.
The authors used the euclidean distance from a given site's scores to a given species' centroid in sd units variance of the species scores as a means to estimate a site's habitat suitability for individual species. I am using this as a means to estimate a novel location's species composition based on a suite of environmental covariates that predict its position in ordination space.
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I am following the generalized string below, hardly having any clue to change color, line and symbol types to give contrast to the plot. No good tutorial on par function :(  
please help
##Biodiversity.R ##Kindt & Coe 2005
##follow the string below
ranka = rankabundance(data.all)
ranka
rankabunplot(x, scale='abundance', addit= F, specnames= c(1,2,3)) rankabuncomp(data.all, y=data.env, factor='Site', scale ='accumfreq', legend=F, labels(T), lty=2)
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I see you already have an answer, but:
a) Have you tried using R commander? Its a gui so easier to use, esp with a plug in like EzR. Then you could explore plug-ins that hlp with graphc visualisation. I mean its always better to learn the scripts, but then you can see in R the commands it generates so you can learn.
b) There are great courses on EdX (a NGO that hosts corses on line from Many great Universities). Some may be too introductory if you already know how to write most of the scripts you need, but they may help in that in the courses there are tutors to assist so you can ask them on the discussion forums... They are free but you can pay for a verified certificate if you choose. Here are some links:
Data Analysis for Life Sciences using R (https://www.edx.org/xseries/data-analysis-life-sciences)
Foundations of Data Analysis - Part 1: Statistics Using R (https://www.edx.org/course/foundations-data-analysis-part-1-utaustinx-ut-7-11x)
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Dear friends
Part of my work is the creation of species inventories by analyzing the relevant literature. Reasons of this are to have an update information for the area i work, to have such lists with coordinates (if possible for all data) in order to be used in maritime spatial planning and for comparisons with neighbour areas. Apart from the traditional statistical analysis (number of species per class, family, etc.), any zoogeographical analysis (after having such a list for the larger area), habitat analysis (where these have been found in terms of substrate) which other analysis could be included in such a work in order to become more modern and attactive? Do taxonomic diversity indices (Δ+, Λ+) can be used for comparison with larger datasets (e.c. local species list with Mediterranean species list)?
Any idea - proposition is welcome.
Best
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The "....should be found..."  needs some specification. SDM predicted presence? Historically recorded as present, but currently absent? In the latter case overlays of historical and contemporary presence in grid format per species, for all species, per species group? 
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Conducting experiment on differences in biodiversity of micro-atolls between day/night. I am wondering when conducting the shannon index if I should remove species that remained the same in numbers. For example coral and rock boring urchins remained the same. Thanks for any help! 
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You should not remove them for the simple reason that their presence may have influenced the presence of or the absence of other species in the sample plot. However, do not forget to count them as merely present and score one.
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I need to know how to ensure that calibration and projection (future) raster stacks have the same names for layers
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You can (re)name layers in you raster stack (or brick) using the function "names".
> library(raster)
Le chargement a nécessité le package : sp
> fn <- system.file("external/test.grd", package="raster")
> s <- stack(fn, fn)
> r <- raster(fn)
> s <- stack(r, fn)
> s
class : RasterStack
dimensions : 115, 80, 9200, 2 (nrow, ncol, ncell, nlayers)
resolution : 40, 40 (x, y)
extent : 178400, 181600, 329400, 334000 (xmin, xmax, ymin, ymax)
coord. ref. : +init=epsg:28992 +towgs84=565.237,50.0087,465.658,-0.406857,0.350733,-1.87035,4.0812 +proj=sterea +lat_0=52.15616055555555 +lon_0=5.38763888888889 +k=0.9999079 +x_0=155000 +y_0=463000 +ellps=bessel +units=m +no_defs
names : test.1, test.2
min values : 128.434, 128.434
max values : 1805.78, 1805.78
> names(s) <- c('r1', 'r2')
> s
class : RasterStack
dimensions : 115, 80, 9200, 2 (nrow, ncol, ncell, nlayers)
resolution : 40, 40 (x, y)
extent : 178400, 181600, 329400, 334000 (xmin, xmax, ymin, ymax)
coord. ref. : +init=epsg:28992 +towgs84=565.237,50.0087,465.658,-0.406857,0.350733,-1.87035,4.0812 +proj=sterea +lat_0=52.15616055555555 +lon_0=5.38763888888889 +k=0.9999079 +x_0=155000 +y_0=463000 +ellps=bessel +units=m +no_defs
names : r1, r2
min values : 128.434, 128.434
max values : 1805.78, 1805.78
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Swaziland's Biodiversity: I am currently working on compiling a dataset of all Swaziland's flora and fauna observations and collections. I am looking for anyone who has records of any flora or fauna from Swaziland which are currently not included in GBIF or SANBI datasets. The information we would need would be the basic record data (date, collector/observer, identification information, locality, latitude/longitude, and any other collection notes). The information will be used by the Swaziland National Trust Commission as part of a project to upgrade and expand the protected area network in Swaziland.
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Thanks, Norbert
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I am working with species richness on a plant group and for my discussion, I would like to compare my results with the results obtained in different published studies. Do you know any statistical method to do it?
Most of the papers just give the number of species, other provide a species list but only with a number of total individuals.
I have just tried comparing the species richness/total area (sum of plots) and then extrapolate it to 1 ha to have the same measure in all the studies.
Why do you suggest?
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Unfortunately it is not possible to directly compare species richness across sites if they refer to different areas. and you do not have additional information. Without that, comparisons are meaningful only if the inventories to be compared were drawn from samples of equal size.
The relation btw species and sample area is not linear. That prevents meaningful estimate of a "species per unit area" concept. Simply put, if you have an inventory of S species from an area of size A, the sub-inventory of the area of size A/2 will NOT be S/2. This is due to the distribution of the species' abundances which is virtually never uniform. Usually it is somewhere between logarithmic and log-normal.
The species-area curve is a well-known-to-exist, but difficult to harness, feature of biological diversity. There is a host of statistical work, mostly done by Chao, Magurran, Tuomisto, and many others on how they might behave.
Key to be able to compare richness is the availability of sample size and/or species abundances. This allows you to build the species-area curves. Rarefaction techniques have been widely used to get an estimate of the number of species in a sample of arbitrary size that is smaller than your inventory, and then compare that with the richness for the same size of another inventory (which may have been rarefacted to that same size as well). But you need the individual species abundances to build the curve. The rarefaction formula and that of its confidence interval is a bit messy but you may use good packages to work the for you; I'd recommend EstimateS and PAST. Rarefaction only works "backwards" (i.e. you rarefact to a smaller sample size).
To compare richness for samples greater than that of your inventory (i.e. to estimate richness for a fixed size) bootstrap and jacknife techniques do exist too. These can yield a pseudo-variance, that can in turn be used to construct a confidence interval and thereon allow statistical comparisons. EstimateS can do that, to, for a number of richness and diversity estimators.
Possibly, the most widely used estimators are Anne Chao's total richness S. As any of the techniques discussed above, they rely on knowing the distribution of the inventories. Both use the concept of "singleton" and "doubleton": species so rare that they yield only one (singletons) or two (doubletons) individuals in a sample, or, if you have a number of inventories, they just occur in one or two inventories.
You can find all the appropriate formulae in the literature. A lecture-type, summary overview for simple diversity comparisons (in the context of spatially-explicit diversity) can be found here: https://www.researchgate.net/publication/271012760_Beta_diversity. You'll find a list of general references at the end, but a very good manual discussing rarefaction and bootstrapping is Krebs C.J., 1989: Ecological Methodology. HarperCollins.
Regards.
Conference Paper Beta diversity
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For example, if a survey of an area is done, we want to decide how important it is to conserve the area based on species diversity. However, a criticism of diversity is that the diversity index is great but the species could all be common species. Is there a way to place greater weightage on rare species to make the diversity index more relevant?
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I have written several papers on this subject including a series in Ecological Indicators. These papers show how a species a Species Conservation Value Index can be created and how these indices can be compared statistically.  They are all entered onto Research Gate but if you have any difficulty in getting the papers please let me know.
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I have the coordinates of the area and also installed qgis but i cant find any tutorials for making a good study area figure which usually i found in several research articles. please assist me regarding this.
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Simple study site maps could also be easily done in R, which has several packages for that like mapproj, maps, mapdata etc. Unlike MapInfo or ArcGIS, R is free and available to everybody. The code for example for my site would be following:
#install maps
library(maps)
library(mapdata)
map(col="grey80", border = "grey40", fill = TRUE,
  xlim = c(10, 36), ylim = c(50, 68), mar = rep(0.1, 4))
box()
points(25.615672,58.977768,col=2,pch=18)
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I've been trying iNaturalist and a few other mobile phone apps (Map of Life, eBird, PlantNet, Urubu, SISS-Geo) for over a year and found that many users start but do not continue using them. Moreover, due to the existence of several apps, none of them has a complete list of species and none has all desired functions and features.Citizen perspective:In your experience, do you believe common citizens find the apps user friendly and are able to use them effectively to learn and add data to science?Science perspective:Are scientists, mainly taxonomists, engaging in this initiative to help people learn about nature? If not, why? Is the data generated by citizens, useful for science (biogeography, conservation)?
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Hi Onildo,
This is actually a mix of questions.
do you believe common citizens find the apps user friendly and are able to use them effectively to learn and add data to science?
CvS: As you already found out there are quite a few of these apps, each with their own online database attached. Some are good, some not so good, and of course it depends on the number of species (such an app will be much easier in Europe than in a tropical rainforest in Brasil), if it's available in your language and simply if the makers of the app have enough affinity with volunteers in the field.
Science perspective: Are scientists, mainly taxonomists, engaging in this initiative to help people learn about nature?
CvS: I guess they will be, but not all of them.
If not, why?
CvS: Some are simply not doing anything with education, communication etc.
Is the data generated by citizens, useful for science (biogeography, conservation)?
CvS: Very much so, actually we almost only work with such data on butterflies in the Netherlands and Europe.
Good luck, Chris
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I have two groups of species and four principal components of ecological niche space. I want to find (a single) the pairwise Mahalanobis distance in 4D space between the groups.
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One simple solution for common data files (e.g. copy + paste from xls or txt):
Input: Four Variables as columns and observations as rows (sorted according to your predefined groups which are designated per Edit:Row colour/Symbol).
Menu:Statistics:MANOVA function gives out a table of pairwise comparisons with Mahalanobis distances as one option.
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Hi, I want to submit an application for financial support, mainly about pollination biology and plant-insect-relationships, but including also biodiversity statistical analyses, as well as pollination network analyses. Does anybody have advanced experience in statistical analyses of pollinator networks and biodiversity methods and can spare some time to review my application for financial support and give me some expert advice, please? As I am new in the field of network analyses and modelling and only used quite basic statistical analyses for my PhD yet, I am in need for some expert advices concerning the statistical and network methods as well as the hypotheses I included in my application. Thank you very much in advance!!!
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I don't mind having a look at your proposal. I'll be happy to give you some feedback.
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If biodiversity indices applied at genus level? what are problems and disadvantages expected out of it.
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I don't work directly on phytoplankton so I'm not the best person to give you good refrences on the topic.
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I am working with some data from botanical records. But I only measure the presence-absence of the species. I am interested in compare three habitats (natural, disturbed and secondary) with herbaceous angiosperms along an altitudinal gradient.
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Hi,
you can very easily use this R package: betapart (A. Baselga, D. Orme & S. Villeger 2013). It gives the turnover and nestedness components of beta diversity. 0/1 data are fine.
Baselga A. (2010). Partitioning the turnover and nestedness components of beta diversity. Global Ecology and Biogeography, 19, 134-143.
Baselga A., Orme D. & Villeger S. (2013). Betapart : Partitioning beta diversity into turnover and nestedness components R. 
For a nice graphical representation, see for example Albouy C., Guilhaumon F., Araujo M.B., Mouillot D. & Leprieur F. (2012). Combining projected changes in species richness and composition reveals climate change impacts on coastal Mediterranean fish assemblages. Global Change Biology, 18, 2995-3003. 
Hope it helps!
cheers
Nina
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It is a known fact that there are differences between Shannon-Weaver and Simpson's diversity index. I just can find a paper which breaks it down and can be cited in a work. Any help is welcome!
Thanks in advance!
Peter
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There is some advice in Magurran's 2004 text, I have seen a copy at ( http://www2.ib.unicamp.br/profs/thomas/NE002_2011/maio10/Magurran%202004%20c2-4.pdf).
Perhaps by tradition I always trusted Snannon's H but it seems that Simpson's has some practical advantages.
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I would like to know how to use MEGA and other softwares to do the analysis done in this paper; such as Haplotype diversity and  the mean nucleotide diversity (Pi).
Thanks in advance
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I would recommend the program Proseq3 for this. its a bit glitchy but works well
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I am in need of calculating Shannon's diversity index of my identified diatom species using Excel with the formula H'= - Σpiln(pi)
Thank you in advance!
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Hope you have had your excel already.
Or, I have samples for you. Not only Shannon's diversity index , but also others. REMEMBER, you should press "Ctrl"+"Shift"+"Enter" together when you have new cells.
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A referee asks me to do an haplotype network for concatenated sequences of two gene fragments from coding and non-coding regions (control region and cytochrome b). However, I think that it's better to keep as separate haplotype networks. He argues it can be done in NETWORK 4.6 but I think that to concatenate means the construction of "chimeric" mtDNA haplotypes.
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I agree with Martin's comment, but I'd like to add that you should test the correctness of the concatenating procedure with the partition homogeneity test.
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I calculated diversity index of DGGE profile by using bionumerics software. the index range for Shannon wiener is the following for five different rhizopshere
                 SW index        
sample1:    1.2435              
sample 2:   1.2280
sample 3:   1.1189
sample 4:   1.1533
sample 5:    0.7559
how to interpret the results and the method of correlation of data. any suggestions.
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Dear all 
Thanks for your reply. Based on the values I have given what you all suggest. Please help me in this.
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I mean this for any nexus multiple tree-file and not the dot-star file given by MRBAYES for a consensus tree-file
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Dear Dr. Angélica E. Martínez Bauer:
Thanks a lot by the datum of the website on phylogenetics. It will be of general benefit for my work.
Best regards: Luis Medrano González.
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I'm interested in knowing how the estimates of the numbers of species present in an ecosystem are made, and how the biodiversity losses are evaluated. In particular:
* is it based on the macrofauna/macroflora only, or does it also include microbes?
* does the advent of metagenomics/barcoding technologies change the estimates, as new species /OTUs are constantly being described?
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I love your question.  I am trying to ask that question myself here in California at http://www.ecoseeds.com/arastradero.html because I am starting with a blank slate of zero native flora understory, only occasional fauna visiting because they have a hard time trying to utilize the 100% weed patch that has covered the State since we exterminated the ecosystem about 100-150 years ago, and when we got rid of the native flora, that caused the associated soil fungi to go mostly extinct.  
I am adding back the flora species by species, and that is helping the native gilled fungi to be able to have a habitat, and have counted six new species in the plot so far, whereas the exotic plant-covered area next to the plot is still fungi-free.    
I would suggest concentrating on counting the macroflora and macrofauna first, because there is so little measurement of the natural world to begin with, so you can get a baseline on a particular date on those numbers.  I would suggest also, surveys on a massive scale, like a 2,000-3,000 mile megatransect, like you can see at http://www.ecoseeds.com/megatransect.html or even photo native vegetation megatransects like at http://www.ecoseeds.com/mega.html.  
Once you do a megatransect, like west or east along the 48 deg. north latitude, at http://www.confluence.org/confluence.php?lat=48&lon=-4.  Outside of tropical forests or boreal forests, it is surprising to see how little of the native understory is left on the entire planet in temperate or subtropical areas.  You may see trees, shrubs, even grasses, but other understory herbaceous plants of non-grass family members are mostly gone in 2014.   
Then a look at the micro-forms of life would be useful, but they are usually dependent on the macroflora being there to support them, so where you find diversity and density of the native plants, you should find quantity and diversity in the micro-world also.
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I am working on a superfamily which has different types of genes. I would like to compare their similarity within this family. I am wondering if the distance in the Mega program is suitable for protein similarity calculation? What approaches can I use just for the genetic distance between species or populations? There is another way to measure protein similarity by ClustWal (http://www.genome.jp/tools-bin/clustalw).
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Just amino acid sequence!!!!!!Thanks_Abdallah Samy
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(modelling of species number in a region by using ecological variables)
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Hi!
Can you precise a bit better the data set you handle, and the exact hypothesis you want to test? Because first you described a biodiversity- ecosystem variables problem (univariate), and then you talked about population dynamics…
As far as I understood you want to model how a set of ecological variables influence the number of species. Here you will have a community matrix of counts (or any other abundance measure) per habitat (with or without replications). On the other hand you have a set of variables on the same site.
If you are interested on understanding how these variables influence biodiversity in general, then birth rates and so on are not necessary. You must simply decide what biodiversity variables are of interest to you. For example let’s say species richness, and Number’s of Hill using exp2 to consider richness and evenness. You will then obtain two vectors, the first a counts data, and the second continues variable. Both will change with several environmental characteristics so you have a “regression problem”. Each of your two biodiversity (response variables) will be explained with your environmental (explicative variables). Depending on the amount of data available, number of replicates, absence of pseudo replication you will choose an adequate regression function (lm, glm… whatever) with interactions or whatever. You can use a step algorithm (generally backwards) to eliminate progressively variables not supporting important effects on the studied variables based on AIC (BIC).
Otherwise if you have too many variables (and several are categoric) reducing considerably your degrees of freedom, you can create new variables based on a PCA to “fusion” several environmental variables that covariate together. Then carry the step…
Then if you have birth/death rates of a hole community of species on several sites (incredible sampling effort and expensive data base ), and you want to model biodiversity (and not specific patterns of abundance or population dynamics of these species). Then I suggest using functional group approach, and summarize species with variables like: fitness, individuals/(area or resource abundance) and minimal viable population, to associate fitness of species (birth/death rates) sharing similar functional responses under similar stressors to establish winners vs losers on a changing environment.