Questions related to Marine Biodiversity
We will be conducting a survey for marine birds and mammals this summer and we were wondering if anyone has experience with using voice to text software to record marine bird/mammal observations during at-sea surveys? We are planning to use dLog survey software (R.G. Ford Consulting), or equivalent, which has a user interface with data entered into discrete boxes. Each observation is given a time and lat/long location once the user hits the RETURN key to log the observation. Given limited space for computer/handheld GPS/etc. near the observation platform, however, we would be interested in hearing if other researchers have been able to successfully use a voice to text software to record observational data. Such a system would help overcome the limited space issue.
I am reading about pilot projects of seed production of Ostrea edulis, found only some abstract from old paper mentioning north Spain, but I don't know if it is actually working in the mariculture companies on the Med.
There has been seen a lot of impacts, some good, some bad. That depends on a lot of factors in each region. But overall, what is short, medium and long-term impacts of COVID-19 that we are going to see in the future of ocean sustainability?
Currently, microplastics (MPs) occurence researches in coastal and marine animals are performed in huge amounts, but their results concerning MPs abundances are not always given with the same unity.
- From what I can tell from studies I read, most provide data using MPs/individual. There are some studies that sample in pools, and then, after ending samplings, calculate the MPs/individual data. It would be an issue if we compare MPs/individual data of two different studies: one that sampled in each individual and another that sampled in pools?
- Should a specific study provide just the MPs/individual data? I think this study it would be sort of incomplete, considering that this data would not totally reflect the abundance of animals with different sizes, weights, and possibly ages, etc.
- What is the best approach between other unities, such as MPs/g of the whole sample, MPs/g of their dry or wet weight? That are some formulas to convert samples weight for dry and/or wet. This is applicable for MPs?
I know much of that depends on the study's biological samples, and objectives, but I would enjoy reading researchers opinion about it.
Atmospheric Ozone layer are being depleted day by day, with our pollution activities. This atmospheric Ozone absorbs ultraviolet (UV) radiation from the sun, particularly UVB-type rays. But, in the past decade Ozone layer have damaged a lot with the uncontrolled uses of CFC gases. Ozone layer depletion is also going on nowadays, with our adverse emission activities. This damages creating ozone holes and UVB radiation can easily pass through the hole.
My question is, what's the impact of UVB radiation on marine ecosystems?
Dear marine biologists,
Thank you in advance for helping me in identifying this Mediterranean limpet. These beautiful limpets were collected from Lebanese rocky shores, Eastern Mediterranean Sea.
I need to know which species is this? Patella caerulea, Patella vulgata, or Patella rustica / lusitanica?
What is the correlation and impact of POC (particulate organic carbon) in fisheries and in aquatic biodiversity and abundance? How can affect fisheries management?
Ok we know that the larger the carbon or organic content, the more oxygen is consumed. A high organic content means an increase in the growth of microorganisms which contribute to the depletion of oxygen supplies.
Is there any research that shows for exemple if in a specific area the POC is increased the abundance of specific fisheries is decreased or vice versa?
I collected this skeleton shrimp from some algae and have not been able to match it to typical mediterranean endemic and invasive species. Have considered: Caprella acanthifera, C. dilatata, C. equilibra., C. septentrionalis, C. scaura, and Paracaprella pusilla. Would love some expert opinions! He is now living in my self-sustaining jarrarium. I have more images, so just let me know if there's a specific area I could focus on.
Hi again marine biologists,
Thank you in advance for helping me in identifying this Mediterranean sea snail. These gastropods were collected from a rocky coast in Lebanon, Eastern Mediterranean Sea.
I need to know which species is this? Is it Phorcus turbinatus?
Photo number 1 is a fish that came out in the stomach contents of a Coryphaena hippurus collected in the Southeast Pacific.
Photo number 2 (Fish) and 3 (Otolith of the fish) is a fish that came out in the stomach contents of a Xiphias gladius collected in the Southeast Pacific.
Photo number 4 is a fish that came out in the stomach contents of a Xiphias gladius collected in the Southeast Pacific.
the genus hydratina has been reported from gut of a marine fish from Pakistan.Does any body know any other marine or brackish rotifer from Pakistan?
While shorfin mako and longfin mako have been listed as endangered species, their jaws are still welcome in shark jaw market with poor regulation, as a great number of people ardently display photos of their mako shark jaw collection on Facebook, Twitter and somewhere else. I find that while shark fin trade has drawn much attention, shark jaw trade, despites its popularity, has not been a highlight.
It is really hard to find a paper on the species composition of shark jaw market.
Even worse, some game fishing fishermen killed the living mako sharks and keep their jaws for trade or self entertainment.
Shark jaw trade of endangered species is as harmful as shark fin trade, and maybe even worse. It is because the harm of shark jaw trade has not been revealed to the public, while shark fin trade has been notorious. And some people even find excuses for their collecting endangered shark jaws, such as "this jaw is from a shark that dies a natural death" or "I got it from a legal aquarium".
Do you have any suggestions on mitigation of shark jaw trade of endangered species? Or have you ever studied this problem?
We are planning to inventory the black and red corals growing on the Mediterranean sea bottom. I read about various methods amongst them the use of ROV with Sea bottom imaging sensors and cameras.
How to efficiently inventory Precious corals (Black, Gold & red)?
What are the most efficient gears to use for sea bottom surveying such species?
I am looking for current bibliography (books, articles...) about biogeography, specially about oceans, marine paleogeography and marine biodiversity patterns of distribution
Hello all. Many of you might have observed during the past several years that beaches around St. Thomas have been impacted by high amounts of brown algae known as Sargassum or gulfweed. I am working with UVI and trying to build a historical record of these events. If you have pictures or made notes of places where you saw massive amounts of these algae in the past I will greatly appreciate if you could share that information.
These stranded seaweed events have been implicated in the die-offs of fishes and turtles, as well as potentially affecting tourism because of the displeasing sights and smells as the algae rot. Many Caribbean governments and businesses have been financially burdened by conducting cleanups as well. Although records of these events in Puerto Rico and the Gulf of Mexico are somewhat available, I am having difficulty finding information for St. Thomas and other smaller Caribbean islands outside of newspaper reports. My goals is to use social media to get a clearer map of what beaches have been affected and when, in the hopes to design some management strategies and raise public awareness.
If you have witnessed these events, I will appreciate that you contact me with the following: 1) Location where the algae were observed, 2) Approximate date (month and year), and 3) a picture if available (to try assessing amount per area). If you are unsure of what the seaweeds look like, this article deals with the issue for the Gulf of Mexico: https://eos.org/f…/sargassum-watch-warns-of-incoming-seaweed
I will be grateful for any information you can share.
Dr. Edwin Cruz-Rivera
University of the Virgin Islands
Very interesting project!
Will it take place in freshwaters?
What techniques will you use for sampling fish larvae / juveniles at the microhabitat scale?
How are you going to describe the vegetated beds?
A Malagasy PhD student is presently trying address identical questions in Toliara Bay, SW Madagascar (so, tropical marine species, a lot of them unknown at larval & juvenile stage...).
I'm trying to determine a few reef sites in the Florida Keys that may have both the shallow and deep morphologies of Eunicea flexuosa (formerly known as Plexuara flexuosa). I have attached photos of the two growth forms. Any help would be appreciated.
I would like to know if there are online available and free world-wide datasets of sea surface temperature, net primary productivity, salinity, pH and dissolved oxygen.
I always reads in the internet saying that it is quite harmful to aquatic life and etc. But, at the same time I also found some researchers who use it in their formulation to makes a marine coating for steel. So, can I also safely assume it is fine? Or is there a method which can process ZnO into a non-harmful substance without losing its beneficial properties?
p/s sorry for my bad english. Thank you :)
I am currently working on a project aiming to access the influences of a disturbance on coral reef fish assemblages.
As the title goes, I've encountered a major problem while computing FD indices. I am going to compute Functional Richness, Functional Evenness, Functional Dispersion proposed by Dr. Sébastien Villéger at 2008.
However, the lack of enough species/functional entities in most of our observation makes FD indices computation impossible (The size of the assemblage in every observation is small, usually less than species).
Here are some details of our research method
The field survey method we applied is "modified Stationary Point Count (SPC)", apart from the usual SPC, I select a patch of coral (ranging from 20*20cm2 - 150*150cm2 ) as an object and record down the species either swim by from less than 1m above or crawling on it, as well as the abundance of those species for 6 minutes. And thus we usually encountered less than 3 species. Three treatments are there and for each treatment, we collect 10 data (10 observation).
I appreciate any comment and piece of advice on this topic and thank you in advance.
I'm trying to collect wild animals for ecological and aquaculture research and there seems to be very few of these in Sarasota Florida where we have subtropical weather. The only place we have found any is in a specific shallow Thalassia seagrass habitat near deeper pass water during Summer and Fall. I suspect the population is low and might be recruitment limited but maybe there are more animals in deeper water. Any insight on this would be greatly appreciated.
I have a set of data on how the temperature effect sessile marine organisms, reef-building corals, during elevated sea temperature. During stressed period, the corals will bleach based on how much stress present and the tolerance of each species. Hence, I have the species of each corals I have found in my survey location (quantitative) and the level of stress expressed by each invdividuals (qualitative).
My goal is to get a comprehensive analysis of:
1) diversity of corals at each location (which I know, vegan in R)
2) The degree of stress expressed (I planned to use non parametric to compare between sites)
3) The degree of stress expressed based on each species recorded for each location, which is synergistic analysis of 1) and 2).
I am a bit clueless about which analysis should I use for the 3) goal. I hope anyone who has an idea of mixing both into one analysis which i can pin point what species is the most vulnerable at which location.
Thank you in advance for the attention.
on a cruise in the central Sargasso Sea, I encountered numerous pyrosomes in the upper 100 m, which partly reached high abundances. Can somebody help with the species identification? I am not sure that the colour (quite divers) is really a good tracer for species and would appreciate any comments.
Best regards, Florian
I attach a photo of each of the two sides of the object. The object is roughly circular, it is 27 mm across, it is 2 mm thick and it weighs 1 gram. If wet, it sinks in water (density > 1). It does not react very much to acid (not calcareous?). I found it at low tide on the beach of Vogar (SW Iceland) in late August 2017.
Is it part of some marine biota?
Marine Biodiversity Records comes under Journal of the Marine Biological Association, UK. Will impact factor of JMBA be considered for biodiversity records?
I am embarking on an exploratory research project on secondary metabolites of marine organisms particularly on sea stars and brittle stars. What natural products should I consider first? Im looking for a list of natural products and various methods I can use to identify and quantify them. I am planning to do zoochemical analyses, in vitro antioxidant activity, and cytotoxicity.
How deep into a structure - an artificial or a natural reef - is utilized as habitat by settling organisms? e.g - how far inside a gap between boulders of a breakwater, we can expect to find encrusting organisms?
Any papers on the subject will be appreciated.
TL ~10cm. Perth coast, Western Australia, March 2016. I believe it may be a juvenile Spangled Emperor (Lethrinus nebulosus) or a closely related Lethrinid. I would like to have confirmation so it can be included in a soon-to-be-published book on the fishes of Rottnest Island. Any help with identification or suggestions greatly appreciated.
I am looking for a picture taken from this fanworm species. It's distribution is in Atlantic Ocean and Mediterranean sea.
A similar operculum is attached.
These three specimens were also collected from Mumbai coast of India.I thought these belongs to the genus Agaronia and Bufonaria. Please share your experience for identification of these specimens up to species level.
I have 9 locations with 30 samples from each location. Each sample is a quadrat with species abundance data for multiple species. I want to generate a MDS plot using primer to visualize differences in community composition between the 9 sites.
However I want to use the centroid for each location in my MDS. I think I can calculate the centroid using PCO in Primer but I am not sure how. Does anyone have experience doing this in Primer?
There is a lot of data on Caribbean mangrove root fouling communities but I am having a hard time finding anything from the Pacific. Not sure if that is because of the mangrove species itself or if the roots just don't reach the subtidal. Thanks in advance.
I am interested in commercial cultivation of marine oysters/ mussels in field from secured river patches near the sea (Maharashtra, West coast of India). I would like to know about methods, timing, species etc. which will be convenient for that area.
I am interested to know where basking sharks Cetorhinus maximus are occuring in the north Sea. Does anybody know a report or scientific paper on this?
Coral reef environments are excellent indicator of ocean health. About 10% of the worlds coral are dead, 40% are below threat
What characteristics of species, such as temperate or tropical, sessile or motile, and so on, make them especially delicate to stressors inferable from environmental change?
What particularly about species makes them more prone to being affected by climate change?
In the case of the competition between barnacles Balanus and Chthamalus, Balanus outcompetes Chthamalus. It is known that most of the sessile organisms, especially the ones in marine ecosystems, compete through interference. But how does this actually work?
Size: range from A (~80mm) to D (~120mm). Rottnest Island on 20/4/17. Could they all be juvenile Spangled Emperor (Lethrinus nebulosus) or a closely related Lethrinid? Any help with identification or suggestions greatly appreciated.
I saw this shrub (up to 2m) on Mallorca in April and think that it's a Coronilla. However, all the Coronilla species I had a look at don't seem to have these prominent stipules. It was growing along the coast on the Cap de Formentor peninsula. Does anybody know what this is?