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# Coastal Ecology - Science topic

Explore the latest questions and answers in Coastal Ecology, and find Coastal Ecology experts.
Questions related to Coastal Ecology
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We need to calculate the influence of 3 different sources of water intake (river, eutrophicated bay and sea) on the bay, located in the middle of these sources. You can see a map with explanations as the 1st attachment (Slide1).
We have a boat with a flow-through system of sensors, so we measure different parameters every 5 sec (60m approx.). Is it possible to "imagine" the narrow streams of water intake as 3 point-source of "pollution" and calculate the influence of each point on the bay? Like, for example, to understand what source is more responsible for the increased level of pollution: river, bay or sea? Could it be done with kriging in ArcGIS Pro, and then probably visualized the influence with arrows, where the length of the arrow will represent the strength of the influence (2nd attachment, Slide2)?
Or maybe there are other suitable ways to do so? By the way, we don't have information about the speed of the flow in and out of the bay, however, it's probably possible to get it later. But we do have lots of other parameters like salinity, turbidity, fDOM, temperature etc.
I would really appreciate your help and suggestions on what articles I can read about it.
Thank you!
It's quite hard to distinguish in this area what's tributary and what's not, as it's a coastal area, an inner archipelago. However, the northern stream is generally considered to be a main stem. The western eutrophicated bay is a flad (as they usually call such coastal lagoons in Finland). The characteristics of a flad are usually that they are under some kind of protection because of their unique ecosystem and the "entrance" to the flad is usually very narrow and very shallow (however inside a flad it's usually 2-8m deep).
As you can see on the maps, this flad is connected to the other bigger bay (fjärden) through a small ditch that goes through wetlands. The coordinates of the central bay of interest are 59°58'00.9"N 23°40'09.7"E.
There is basically no tide in that area of the Baltic sea. The central bay is something like 9-14km from the open sea (areas of the outer archipelago) depending on what route to choose through all these islands.
Basically, we have made a GAM analysis for that area based on our other parameters, and we have a predicted "normal level" for turbidity and a map, which shows SD from that normal level for every occasion (approx. 6 occasions during the non-ice period). So, basically, we were thinking about if it's possible to understand which source has a greater influence on this high positive SD turbidity in the bay and to which spatial extent. Like the spatial influence of a "point-source pollution". We have lots of high-resolution data, so we were thinking that probably it's possible indirectly calculate the strength and direction of influence. Kind of to draw the area where this particular point of pollution has influence, and where it stops having significant influence, being too diluted. But now thinking more about it, it seems that it's not really possible to predict such things without knowing velocities.
All the best,
Maria
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Hi everyone. I'm planning on determining MP presence, size, color, shape, etc., in other words, in doing a visual sorting/characterization of MP accumulated in penaeid shrimp abdominal muscle. Nevertheless, visual sorting becomes more difficult as particle size get smaller, and is time-consuming and is more likely to fall into misidentification errors. Generally, it is recommended to do visual sorting with plastics no less than 500 microns, but I'm anticipating that any plastic embebed in the abdomen is much smaller than that. I was planning to try alcali tissue digestion with KOH and fiber glass microfilters of 2 microns of pore size, and my intention was to observe the filters under a stereoscopic microscope of a minimum of 45X of magnification. But still I'm going to obtain small plastic particles, if any (spoiler: there will be). So my question is if you have any recommendation or alternative method?... observe the filters under a fluorescent microscope using Nile red to facilitate MP discrimination? analyze another tissue? use a greater pore size filter? change the organism... or maybe it is possible to do the job. Espectroscopy methods are not allowed, since it is part of another stage of the project, I just wanna perform visual sorting/characterization.
Thank you very much for your attention.
Best regards
You are correct, visual sorting gets increasingly difficult as the particle size gets smaller. The sizes of MPs that you are able to pick out of your sample first comes down to what you can see, and that is often dependent upon the magnification abilities of your microscope. And there can be a fair amount of error associated with that as MPs often look like other things (e.g., diatoms). Adding additional techniques before visualization can help a lot.
I’m not sure how much I helped to solve your problem, but I hope I at least gave you a few more directions to look in.
Good luck!
- Melissa
Cai, H., et al. (2020) Microplastic quantification affected by structure and pore size of filters. Chemosphere 257, 127198. http://doi.org/10.1016/j.chemosphere.2020.127198
Nguyen, B., Claveau-Mallet, D., Hernandez, L. M., Xu, E. G., Farner, J. M., & Tufenkji, N. (2019). Separation and analysis of microplastics and nanoplastics in complex environmental samples. Accounts of chemical research, 52(4), 858-866. https://doi.org/10.1021/acs.accounts.8b00602
Karami, A., et al, (2017) A high-performance protocol for extraction of microplastics in fish. Science of the Total Environment 578, 485-494. http://doi.org/10.1016/j.scitotenv.2016.10.213
Stanton, T., et al. (2019). Exploring the efficacy of Nile red in microplastic quantification: a costaining approach. Environmental Science & Technology Letters, 6(10), 606-611. https://doi.org/10.1021/acs.estlett.9b00499
Meyers, N., et al, (2022). Microplastic detection and identification by Nile red staining: Towards a semi-automated, cost-and time-effective technique. Science of the Total Environment, 823, 153441. https://doi.org/10.1016/j.scitotenv.2022.153441
Li, L., et al., (2018). A straightforward method for measuring the range of apparent density of microplastics. Science of The Total Environment 639, 367-373. http://doi.org/10.1016/j.scitotenv.2018.05.166
Maes, T., et al. (2017) A rapid-screening approach to detect and quantify microplastics based on fluorescent tagging with Nile Red. Scientific Reports 7, Article number: 44501. http://doi.org/10.1038/srep44501
Shim, W.J., et al. (2016) Identification and quantification of microplastics using Nile Red staining. Marine Pollution Bulletin 113, 469-476. http://doi.org/10.1016/j.marpolbul.2016.10.049
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I am searching for a database presenting the STATUS of Extinction (Red list for example) about COASTAL INVERTEBRATE SPECIES!
Use OBIS (Ocean Biogeographic Information System) mapper (https://mapper.obis.org/), on the left hand you have Options, and within that, you can tick the box 'only Red List species'. So you can get all records of all marine Red list species. Use the Depth range option to get only shallow water species from this. Then use the arrow with a bar beneath it (download) on the top row to download all these results to a csv file. This is one approach to getting at the data that you need. WoRMS (World Register of Marine Species) (https://www.marinespecies.org/news.php?p=show&id=8143) does use this IUCN Red List for species, although it would be harder to get the data, but is useful for checking. You can also email WoRMS to ask for a query that has the IUCN Red List, they are very helpful.
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What are the basic elements for a good management of the coastal ecosystem? how about the experiences of countries? articles or any links?
Dear Colleagues,
Kind regards
Fatima
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Greetings and Good day to all,
I am working through a project and was seeking information from anyone that has had experience using the South Florida Water Management DBHYDRO data platform.
Also if anyone has any information on comparison or analysis of salinities between wet_dry season and then how to graphically show the influence on natural salinity fluctuation/changes and then pinpoint where Freshwater inflow effect those level due to artificial actions like opening_closing levees.
My Gratitude and Thanks
Abhijit Mitra Thank you I appreciate the information.
Michael Waldon I know some folks on that team, i just spent a summer in the Everglade on an internship will definitely reach out.
I will keep you all posted as I will be working on this analysis in the coming month during the academic break.
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I am not understanding very well the dynamic of benthic exchange in coastal sites and if is a process that normally can occurrs fast (hours to days) or slowly (weeks to decades)?
I need this information to understand the variability of concentration in long-lived and short lived Radium isotopes in a coastal aquifer
see the article
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I want to predict shoreline change in the future by the results or data of DSAS software. Could you please give me any advice?
Thanks so much!
there are many mathematical and model based methods are available for shoreline prediction.
the one of the simple method is given below
Future Shoreline Change = Slope * Time interval + Intercept
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Studies from Indian coastal and estuarine waters show that heterotrophic dinoflagellates are negatively correlated with oxygen/ dominant in hypoxic water.
Ref 1
Ref 2
Wenlu Lana., Bangqin Huang., Minhan Dai., Xiuren Ning., Lingfeng Huang., Huasheng Hong. (2009). Dynamics of hetrotrophic dinoflagellates of the Pearl River Estuary. Northern South China Sea. Estuarine, Coastal and Shelf Science 85, 422–430.
Low dissolved oxygen is more often the result of autotrophic algal bloom in response to eutrophication. Aerobic degradation of cellulose/lignin and other biomolecules strip off oxygen. Many or most heterotrophic dinoflagellates or picoeukaryotes feed on the diverse array of bacterial blooms which are associated with algal degradation and decomposition as well as hypoxic conditions, hence it could simply be a cue for the dinoflagellates to know that their is bacterial feed present and so they congregate at such specific locations. The question might simply be the case of inverted observation and the hypoxic condition may not be conducive to the heterotrophic dinoflagellates but their presence could mean ongoing decomposition of the autotrophic species biomass that had started to sponge up the dissolved oxygen.
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The zooplankton density estimated in this study ranged from 354-771 cells per ml. That means it is 354000-771000 cells per liter. If you see the available literature from Indian coasts as well as from the same Kalpakkam coast, zooplankton density generally will be in the range of 200000-600000 cells per 10000 liters of seawater. Even many authors have reported similar densities for 100000 liters of seawater. So its unimaginable how such huge numbers were arrived.
Generally, a phytoplankton bloom with 700000 cells per liter density can be seen in naked eye as a distinct layer of green, brown or red colour on sea surface. So, with this high density of zooplankton reported in this paper, the sea will be full of zooplankton. With this density, if you take one liter of seawater, 20-30 % of the volume will be occupied by zooplankton considering the presence of gelatinous species encountered by the authors in this study. Practically, it is just impossible.
Numerical estimation of planktonic species are performed by many, but it is indeed a sorry state of affair that many of such reports are the results of extrapolated data obtained from very least volume of water sample and that too without establishing a mean data. Normally manual or instrumental enumeration of species assemblages, if performed on only 0.5 to 1 ml of water sample, results in amplification of the data when extrapolated to a litre of water and often the data exceeds what would have been actually present there.
With this being written, it is also possible for many workers to simply misidentify the more mature copepodite stages of mesozooplankton as adults and that too often yields exorbitant densities.
Keeping the above statements in mind, we need to consider the fact that aquatic system in highly dynamic and data procured from one such environment can only be contested upon by being at the same sight at the same time, which practically is impossible since the planktonic assemblages varies significantly based on the circadian rhythm as well as the biogeochemistry of the ambient ecosystem. Also the presence of warm discharge water at the vicinity of nuclear power plants might have triggered such a phytoplanktonic bloom as befitting the number of zooplankton reported.
Unless consistent data of similar magnitude get reported, it will not be prudent to discard (no matter how outrageous it appears) nor incorporate such data in the more practical data pool used by the concerned personnel. Doing either without absolute evidence to disregard the other will simply lead to impractical vilification and unwanted situations. In cases such as this, ignorance is a bliss.
Regards,
Dr. Abhishek Mukherjee
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I would love to collaborate, as I am trying to record their global occurrence. As for now, there are no records from South American coasts and few from eastern Asia and Australia. But with only 100 species known worldwide there should be plenty more.
Hi Wolfang , I occasionally find some freshwater
Gnathostomulida during processing my sample. these samples are from the Delta Nile region in Egypt. I am not sure about its taxonomy.
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I met these two beautiful jellyfish in the Adriatic sea, Strait of Otranto,
can some expert help me in identifying these scifozoa specimens?
Hi,
The first one is most likely Pelagia noctiluca but this specimen was damaged. This is one of the most common scyphozoan in the Mediterranean Sea.
I am less familiar with the others specimens but it reminds me of the genus Olindias (Hydrozoa; Limnomedusae). It may be this genus or something close.
Cheers!
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I need the district and village wise shape file of Kerala for plotting vulnerability of coastal villages.Can any one provide me with .shp/.smz files for further analysis in spss.
The following link is very helpful. You can download village boundary map of all the Indian States from the following site. Using QGIS I could open the file in the vector shape file mode.
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I am currently analysing temporal and spatial zooplankton groups and in many samples from the same time period there appears to be a very high proportion (~90%) of the same group (Cladocera). I have been unable to find literature related to whether zooplankton (specifically cladocera) can develop in blooms under optimum conditions, similar to those of phytoplankton.
If anyone could point me in the direction of any literature related to this topic, it would be greatly appreciated!
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As we all know that more and more marine habitats are degenerating because of anthropogenic activities in the ocean and other reseaons, for example, fishing, climate changes. So we need to do something to change the situation.
Can you guys give me some restoration mehods or suggestions, especially for the coastal area.
regards,
BIN
Hope this PDF is useful
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I am doing a GIS project on different coastal ecosystems and need a representation of such ecosystems. Corals, Mangroves and Seagrass I have, but kelp is missing...Thank you!
I'm not sure where you can find this shapefile, but it's likely the authors of the attached 2016 paper "Global patterns of kelp forest change over the past half-century" will have one. See Figure 1A.
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Is it possible to replant Posidonia dans la mer?
How we do it?
Dear Van Van,
Please take a look to these papers.
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While I can find good references for dynamics related to substrate size - community or species on sandy beaches, I would like to find more about potential effects of substrate color (which is finally due to its composition).
Even at temperate latitudes, darker color means higher temperatures under the same radiation. Is there any reported effect of this on life-history traits, or some kind of experiment to test differences in behaviour/physiology of resident species?
Thank you
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I will be increasing T by 2C every few days and need a heater that can do this accurately for a few gallons of seawater
Tubular Immersion heaters are best option. It can be designed to based on Tank dimensions n with a suitable control System ( Panel). We make such heaters.
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I am trying to use the generalized modes on WAMIT to simulate free surface movement, but when I try to modify the newmodes.dll file WAMIT doesn't working, sending the message: "Error 0007: Error loading import library.newmodes.dll".
I have been trying to modify the dll using Intel Visual Fortran, as recommended in the manual, but it's a more recent version of it. Now I am not sure if I am using the correct procedure, so if anyone could help me with this, maybe with a tutorial or anything, I would be really glad.
Thanks for the help in advance.
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I need literature to made a report on integrated coastal management applied to the western Southamerica littoral, mainly Peru. Many places of the work are within the Humboldtian biogeographical region according to Sullivan and Bustamante. But, I have not many experience to build the process to made a plan for ICZM in this zone.
Hey Jose!
I am not from the area, but there is a group working with integrated coastal management in Southern Brazilian coast that I could introduce to you, if there would be any names that you would like to get in touch. The first link below is about many works (dissertation) they have developed within the scope of coastal management. The second link is the address o the researchers that I know, in case you need some contacts. Finally, the third link is a guideline from Brazilian government on the instruments for integrated coastal management. It is in Portuguese, but I assume it would not be so hard to read.
Hope it helps.
;)
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Can you possibly help me to identify the following images?
These were collected from the Chilika lake ecosystem dated 12.12.2008. But proper identification was not made till now.
can anybody help me on this aspect and also can you provide the available literature on this species?
Dear Debasish
The samples that you have posted , was living or fossil stage ?
Best
Aravinda
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Looking for marine scientific contacts all around India, especially people working in Coral and Mangrove Conservation? Who knows where institutes are located, where projects can be joined and supported ? Thank you very much for any help!
Dear Verena,
there are many government and NGOs that work on mangroves and corals in the Indian subcontinent.
our Institute National Centre for Sustainable Coastal Management (NCSCM) under the Ministry of Environment, Forest and Climate Change researches on both the ecosystems.
Besides there are institutions like ZSI, BSI, CMFRI, CIARI, MKU, State Universities in the Govt side and SDMRI, Dakshin, ANET, NCF, MFF etc in the NGO side.
Best wishes for your research
Deepak
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Is anyone working on modeling how changes to coral reefs may change coastal erosion models.  This is something I am very interested in getting into and is wondering if anyone would be interested in collaborating or has suggestions on who to speak to.  Thanks!
Hello David,
Please get in touch with Joseph M Maina of the University of Queensland. That is his expertise, you can visit his researchgate profile at  https://www.researchgate.net/profile/Joseph_Maina8 and also his google page for his publications at https://scholar.google.com/citations?user=Go7V_2AAAAAJ&hl=en
I am also appending one of his recent publications on a study on coral reefs in Madagascar.
Goodluck,
Beckline.
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I'm currently working on IUCN Red List assessments for syngnathid fishes. Many are Australian endemics, some of which inhabit seagrass beds. Dedicated surveys and population estimates are few and far between for these species, so it helps with assessments if we know the status of their habitat.
Riley:
This link with references would provide you with essential insights:
Best
Syed
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Abundance, number of species and diversity
Very interesting question. The bottom current has an effect on detrital input which in turn, may influence the feeding activities of macrobenthic polychaete community.
The following references may help you more.
Regards.
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Collected from the coastal waters (benthic domain) of the Bay of Bengal, please help me identify the specimens. Anyone? Guess these are teatae amoeba!
Dola:
Well I can guess that your image in frame 1 resembles a thecate Amoeba. In frame 2 resembles cyst of a dinoflagellate. See link:
Best
Syed
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can anyone suggest me the best method for assessing coastal vulnerability to climate change? Is there any standard protocol to fix the vulnerability index?
Thank you v.much Dr.Annes and Dr.Rajiv Pandey for providing your valuable comments and suggestions.
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The emerging concept of Anthropocene, era in which human influences modify various environmental properties, has direct implications on coastal research. Indeed, anthropogenic chemical (e.g. metals, pesticides, pharmaceuticals), physical (e.g. microplastics, sediments, temperature) and biological (e.g. invasive species, eutrophication) stressors increasingly affect marine and coastal aquatic systems. Thus, what is the meaning of pollution if the understanding of coastal environments is intrinsically linked to the identification of shifts on contaminant baselines, biology, and oceanographic variables. I will be chairing a session at YOUMARES 7 (link below), and welcome abstracts (deadline June 15) discussing coastal and marine pollution in a broad context including environmental changes related to human interference.
Also contribution and responses posted here might be presented during the session opening.
Hi Desmond,
The question was more about what is exactly the meaning of term. In system where the very baselines and functioning are no longer natural, which are the stressors and consequences of coastal pollution? Some contaminants are more clearly human-derived, such as POPs, metals, nutrients, etc. However, what are the stressors that we have not looked at or to which our assumption of natural behavior is no longer sustainable?
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We are working on a project looking at the relationship between CDOM and DOC across a large gradient of ecosystems. With 10 000+ observations we are still looking for more data.
Anyone aware of possible open data repository?
For clarity, in the spirit of advancing science through open access to publications and data, authorship does not follow from the inclusion of published data. For further information, see guidelines from e.g. EU (https://ec.europa.eu/research/openscience/) and NSF (http://www.nsf.gov/bfa/dias/policy/dmp.jsp).
Check with Norm Nelson/Dave Siegel from UCSB. Their data should be open with much available through NASA SeaBASS. Best, Emmanuel
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I am currently modelling the potential distribution of the invasive Caprella mutica and native species of Caprellidae (for starters C. linearis) in the North Sea. From my own work I have obtained several offshore samples in the Dutch part of the North Sea. Furthermore I have received data from colleagues in other countries, but the total dataset is still very small. From literature I have obtained hundreds of presence-only observations (e.g. from Cook et al., 2007). But I found hardly any presence-absence data of Caprellidae.
Is there anyone that has this type of data from the North Sea and is interested in sharing this? Thank you for reading my question!
Hi Joop
Maybe this will help: I just uploaded our recent paper on Caprella tuberculata in the Dutch part of the North Sea. It includes several references on Caprellids in this area.
Wim Vader responded to our paper and he presented an unpublished record of this species on the light vessel Noordhinder half a century earlier: Vader, W. 2015. Enkele amphipoden van het lichtschip Noordhinder in 1956. Het Zeepaard 75 (2) 53-54.
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Here are some pictures of the same species taken from different esacals
This species is typical of red mangrove roots submerged from Cispata Bay
Dear Xikum Song
Thanks so much for letting me know i will definitely contact them
regards
Jorge Quirós
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Why are sand dune flora important to the coastal ecosystem?
Dear Colleagues and Friends,
I think that the sand dune flora reduce the aeolian transport of sand, and increase the consolidation rates of sand dune. It allows the development of the dune.
Best regard,
V.V. Than
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karachi intertidal rocks
i cannot, sorry
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Please tell which species will be in Picture E. I found from rock (rocky shore).
Although the pictures are not good, I think it is a colony of a Bryozoa, Gymnolaemata, Ctenostomata. These animals have the skeleton leathery, chitinous or gelatinous, not calcified.
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There are many ecosystem services in the wetlands, such as habitat protection, material circulation. Does anyone have good suggestions for measuring such services?
You should use any of the environmental ecology model for finding answer of your problem. For assessing habitat protection value, first document the biota present there, and their use value per unit area.
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Dear All,
Can anybody help me to identify this specimen ( Probably Armina maculata  ??) collected from Coastal waters of Bay of Bengal?
Thanking you very much for your kind effort.
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for identify marine protected areas with GIS,
I would like to point you to a report we have written recently for the European commission specifically on the topic of connectivity between networks of marine protected areas, called Analysis and comparison of criteria used by Member States for establishing coherent, adequate and representative networks of marine protected areas
There is a lot to be said about the proper configuration of MPAs and taking care of the connectivity between the is highly relevant.
Best regards
Arjen.
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Dear colleagues,
I was reading the paper "Integrated biomarker response: a useful tool for ecological risk assessement", by Beliaeff et al 2002, and I was trying out the computations as in the example (Computation of IBR at station W3 (Warnemunde Estuary) in March 1995, p1318) and there's one thing I couldn't quite follow.
When the authors write about the minimum value (Min) for all stations and/or surveys for each biomarker, I would think the minimum value (that later on we add to Z to calculate the score S) would be obtained directly from the original dataset (not shown in the article), but what I don't understand is how the Min values are below zero for biomarker levels. I mean, measured enzyme activities are always above zero.
Therefore my questions are: i) how is it we obtain the Min value? or iii) are the minimum values relative values, such as a fold-change in enzyme activity?
In addition, when we have to place a + or - sign in Z (showing upregulation or downregulation in biomarker levels), does that correspond to what is expected in theory or to what was actually observed in the data?
Thanks a lot.
Kind regards
I can send you reference of more two papers where some details are available in the supplementary data. Hope that works. If not you can just contact Nuno Ferreira (the first author) and ask him for details.
Susana
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I am currently carrying out a research on climate compatible development through mangrove restoration in Coral Coast Fiji.  Unfortunately, there has not been any studies carried out on carbon sequestration rate in this region.  However, the Mangroves for Fiji, estimate the carbon sequestration rate as 1 metric ton per hectare per year.  I was wondering can I use this figure to calculate the carbon sequestration rate of the replanted mangroves in this region or is there any other method which I can utilise.
Having done extensive evaluation of C sequestration rates in US grasslands, my experience has been that in the absence of good examples in the literature, the only way to reliably estimate sequestration rates is through field studies.  This includes establishing a good baseline of the C in the soil at the beginning of the study for all treatments and then following the annual change due to management changes for at least 3 to 5 years in order to be able to estimate the C accretion rate.  Some of the previous answers are correct in that it is C that is "deep" or protected.  In order for C to be sequestered, it has to have persistence and permanence in the soil.  Often, shallow sampling (<0.3 m) does not give very reliable results because of the turn over of the C due to human, faunal and microbial activity.  Seasonal changes in temperature and moisture also have a profound effect on the long term persistence of C in the soil.
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If I want to evaluate nutrient enrichment in different areas, such as coastal areas and estuaries, should the evaluation criteria be the same or not? And in the case of different evaluation criteria, how can I compare the different evaluation results to the same extent?
Xupeng, I feel , you need to have a diagnostic criteria of different nutrients , in terms of their threshold limits to diagnose the deficit or excess of any nutrient, otherwise whole exercise of evaluation will turn redundant .
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This spieces is from Mar chica lagoon in the mediterranean sea in the North of Morocco..Thank you
I too agree with R.R. Das  regarding the  flowers to identify to the species level However from the  available vegetative features and the  apparent length of internodes suggest me  to fix the picture as that of R. maritima.
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Botanist
1 - Salicornia brachiata + Suaeda aff. maritima (prob. S. australis)
2 - prob. Halosarcia indica (younger plant having not yet produced prostrate branches; certainly not Salicornia brachiata because it is already more than 1 year old!)
3 - Halosarcia indica (typical older plant, with prostrate branches)
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Can you identify young one of species of / genus?  Ophiothrix? collected form estuary, south west coast of India
Sorry, looked at Picture only and missed sampling area. Ophiopholis is obviously not the right genus as it is limited to the Northern hemisphere. However, your specimen still reminds me of species within family Ophiactidae (to which genus Ophiopholis also belongs). Only gave picture of Ophiopholis aculeata as example for comparison. And please don’t call me ‘madam’, I am not 90 years old :-D.
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I'm currently writing a paper concerning the collection and identification of interstitial meiofauna communities along different stations on a tourist beach in the Philippines. I'll be collecting and preserving surface sediment samples using PVC corers then isolating meiofauna using a series of sieves. Afterwards, I'll identify the meiofauna up to the family level. I need a good way to calculate and compare the biodiversity indices of the communities along the different sections of the beach.
You may contact Dr. Punyasloke Bhadury at Indian Institute of Science, Education and Research, Kolkata for help on meiofaunal identification http://www.iiserkol.ac.in/people/faculty/dbs/pbhadury
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HI all,
collected the specimens from the west coast of India. Looks close to Cerithium zonatum???? confirmation required. Shell size 8-11 mm, samples worn out a bit and collected from beach wash.
Best regards
Deepak
Certainly Cerithium zonatum ... but I suggest the determination of C. zonatum (complex). In fact, as in the case of other polytypic species, desirable genetic studies may identify various sympatric or allopatric species , morphologically similar to each other. These two works can help you.
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It is taken from the Red Sea at 20 m depth
Looks like a corallimorpharian, family Discosomatidae (mushroom coral), but I could not find the species.
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Hello everyone,
interesting black gastropod shell with "chopped-off" - like apex was collected from Mangroves of the west coast of India. Can anyone identify the shell?
Best
Deepak
Faunus ater (Linnaes, 1758) Family Thiaridae.
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If you don't mind, could you take a look at these photos (attached) and tell me what you think may have caused the condition in these crabs?  They show some curious black lesions on Metacarcinus magister (formerly Cancer magister) we caught during a biological survey about 10 nmi off the mouth of the Columbia River last summer.  They were caught in a dredged material disposal site in a few hundred feet of water over silty-sand substrate.  Could they be from chitinoclastic bacterial infection or something else?
I appreciate any insight that can be offered.  Thanks!
probably "black spot" disease caused chitinolytic, gram-negative bacteria you should be able turn up references fairly easily.
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To examine if human activity since 1950s have enhanced the coastal surface productivity I would like to measure some proxies. TOC (%) and BSi (%) are both influenced by preservation and dilution effect from non-organic input. Pigment is used in some cases but difficult to analyze? 13C and 15N?
Trends in sewage loadings in the coastal zone would be a good proxy.  Trends in the number of anoxic and hypoxic events and areas covered are popular too.
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I am working in a mangrove in Bermuda where Ucides is not reported. Goniopsis is always present on the trees but I do see a crab disappearing into burrows and assumed it was Goniopsis. Your most recent paper indicated that Goniopsis is not a burrower. So I need to determine who this borrower is!
Thanks for a response when you have the time.
Best regards,
Robbie Smith
Dear Researcher
All have suggested different methods. I will give left over method, which has to be operated manually. A bait attached to twine or thin wire has to be lowered in to burrow and crab grab the bait with chelates. The person holds the bait will sense it  and then slowly pull out the bait. The crab will come out along with bait. A scoop net is used to trap the crab when it is come out from the burrow. This is very old method which was operated by traditional  fisherman for their subsistence.
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Hi, I am looking for information on work being done that examines carbon dynamics in seagrass / eelgrass and salt marsh ecosystems in Canada.  I am undertaking some work to determine carbon accumulation rates on the Pacific coast and am interested to see if other work has been done in the region and in Canada.
Thanks
Marlow
Thanks Xiaoguang.
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Carbon reservoir of the Globe (Dr. Gejo's Blue theory)
The lower one may be Blyxa or Vallisneria?  But they are seen in fresh water.  In Which locality are these found?
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These are unique carbon store house. Dr. Gejo, the famous Marine Biologist will duly acknowledge the answer.
My guess is Hygrophila difformis and Najas guadalupensis.
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What are Spatial and seasonal differences in the diet of sedentary annelida polychaeta of Mediterranean sea?
In addition with the previous comment from Florian, the feeding guilds defined by Fauchald and Jumars were recently updated.
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I'm doing research on Molluscs, using a specific specie named Patella Cochlear. Ecological importance and sexual reproduction of patella cochlear.
thank you everyone. . .
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Can I have information or links on ecology and biological study of the polychaete species of the Algerian coast, and I would like to have some literature on invasive species and endemic to the Mediterranean Sea. Grazie
Buongiorno F. Kies.
Bakalem A. Diversité de la macrofaune des sables fins de la côte algérienne.
Rebzani-Zahaf C. & al. Cycle annuel du peuplement macrobenthique du port d'Alger.http://archimer.ifremer.fr/doc/00093/20458/18130.pdf
Rouabah A. & Rouabah L. Biodiversité et complexe Perinereis cultrifera Grube (Pelure) : un exemple de spéciation.
Buona fortuna e successo.
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I need information or interesting links on the ecology and biology of polychaetes of the Mediterranean Sea (except FAUVEL, 1923 and 1927, Fauchald, 1977). Thanks
Chère Fatima;
Je pense que le Fauvel (Polychètes errantes et sédentaires) suffira pour faire tes déerminations.
Je les utilisés, ainsi que Bakalem, Rebzani et Grimes et ça a bien marché pour nous....
NB; j'attends toujours que tu m'envoie ta stratégie d'échantillonnage.
Bonne chance
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that specimen was collected from rocky shore, please explain that organism geographical distribution
Here's what I've observed in the ANSP collection. In Japan, there is a brown color form of Anachis miser: our largest specimen is 15.7 mm. it is also our largest specimen identified as A. miser. The brown form does not occur in India or Sri Lanka in material here. Our largest specimen of Anachis from India is 19.2 mm. Taking it to be A. terpsichore on the basis of size, and because it is consistent with the description of that species gives a starting point. The same sample has a fully mature individual of 11.6 mm. So size range differs between the species, but not in a way that helps with identification, except of the largest individuals. The same can be said of spire height: spires more than half the shell length occur occasionally in A. miser, and not in A. terpsichore, but there is considerable overlap in spire height. The only character I've seen which might differentiate them is that the axial ribs in A. terpsichore have a central depression, whereas A. miser usually does not. That is, the rib is strong near the suture, a little depressed near the periphery, then stronger again. The more prominent parts of the rib tend to correspond to white in the color pattern, and the depressed part to brown. None of our adults have protoconchs; I haven't looked at juveniles yet.
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Integrated Coastal Management (ICM) is considered as a governance process by Olsen, Lowry and Tobey (1999) and by Olsen and Nickerson (2003). However I realize and support the criterion that “Integrated Coastal Zone Management” (ICZM) is limited to a management process, not specifically a governance one. Governance addresses the values, policies, laws and institutions by which a set of issues are addressed (Olsen, 2003).
Good discussion! I understand that ICZM also involves policies, laws and institutions, but I think that it would be convenient to differentiate when a relevant government instance leads coastal management (ICM) from when government simply participates and support, coastal management (ICZM). Discussing what mean area or zone in Spanish and English, is indeed another interesting subject, but I am focusing in coastal management processes. I suggest that there are  two distinct processes that should be considered separate.
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This invertebrate was found in Coastal Waters of the Persian Gulf (Iranian waters)
I would join to the assumption this is an egg mass of a nudibranch gastropod. However, eggs themselves are not discernible on the picture.
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I am correlating pCO2 with fluorescence in the Western basin of the Mediterranean Sea. This basin is oligotrophic, but in the spring blooms can occur. I was expecting during this season the pCO2 to decrease due to the biological activity, but the correlation coefficient is positive. What could be the cause behind that?
I do not agree with what Alastair has said, pCO2 depends on pH of the water, it is other way around, pH of the sea water is dependent on pCO2. moreover, blooms can be also limited by CO2 in the oceans if not having constitute CCM. an increase in pH has been observed many times with enhancement in phytoplankton biomass. However, I agree with the last part of your answer. and also what Koji has mentioned. This is possible that for warming or upwelling, significant amount of CO2 is added up to the surface water and there could be simultaneous uptake also by phytoplankton and enhancement of fluorescence. However, the net increase in CO2 could be more and hence positively correlating with the fluorescence. In the Oligotrophic condition under high solar light there can be photo-inhibition leading to net heterotrophy and can may not uptake considerable amount of pCO2. As Koji said, phytoplankton stock is also important.
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Found in Coastal Waters
Yes the sliding moviments are typical of slug. And for the blue pointed colors I agree with Mario Chelinodura livida
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As distinct from State/local council policy & guidelines & theoretical modelling  for climate change and coastal recession,I am interested in looking at adaptive or barrier based models specific to identified "at risk" locations on the Western Victorian Coastline. Sandy beach front communities in particular with minimal land area for urban expansion.
Hi David, - Risk models and vulnerability assessments and work on the Western Victorian coastline is quite limited, perhaps considering looking at the latest Victorian Coastal Strategy 2014, and the Victorian Coastal Hazard Assessment 2012 for relative citations on coastal process modelling. Hydrology and geomorphology models could assist.
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It was drifted to shore after a storm at the Mediterranean sea. Sorry for the low resolution.
Thank you
Razy
Thank you all, I think that this egg mass are of Murex trapa. This species is very common at Zikim, near the border of Israel and the Gaza Strip.
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The mangroves play a very important role in stabilizing the fragile coastal regions of our planet. What can be done to avoid the depletion of the precious mangroves?
Broadly three main strategies are possible:
1) More effective land use planning to conserve existing areas of mangrove and prevent their conversion to agriculture, shrimp farming or development. Enabling mechanisms could involve protected area designations, local community participation/empowerment and greater recognition of the protective properties of mangroves against storm surges and tsunami;
2) Improved consideration of the long term effects of dams and flow regulation on rivers that can greatly affect the input of sediments to many mangrove coasts. While it is not easy to de-engineer large river catchments it is important to know whether sediment shortage is a factor that could be addressed through improved sediment conservation measures within eroding mangrove zones;
3) Carefully targetted mangrove restoration. Technical capability and experience is improving in this area - see the following links: http://www.mangroverestoration.com/  http://mangroveactionproject.org/  Benefits can include: conservation, fisheries and improved protection against storm surges and tsunami.
Internet searches for the following search terms should be be useful: "mangrove restoration" "Mangrove" AND "shrimp farming"
I wish you success with mangrove conservation.
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Community based management
Co-management
Ecosystem based management
Explain briefly if you select an option