Marine Biology and Ecology

• Mabel Augustowski

  How climate change may affect marine top-chain predators ?

  Climate change probably affects plankton and probably influence fish distribution, i.e., fishes may move to colder regions to survive. Fish-eating cetaceans and other top-chain predators are alsoClimate change probably affects plankton and probably influence fish distribution, i.e., fishes may move to colder regions to survive. Fish-eating cetaceans and other top-chain predators are also expected to change their spatial and seasonal occurrence ?

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  • 
    Luis Tito de Morais replied

    Hi Mabel, This paper has a good synthesis on this question: Robinson, R., Crick, H., Learmonth, J., Maclean, I., Thomas, C., Bairlein, F., et al. (2009). Travelling through a warming world: climateHi Mabel, This paper has a good synthesis on this question: Robinson, R., Crick, H., Learmonth, J., Maclean, I., Thomas, C., Bairlein, F., et al. (2009). Travelling through a warming world: climate change and migratory species. Endangered Species Research, 7, 87–99. Abstract: Long-distance migrations are among the wonders of the natural world, but this multi-taxon review shows that the characteristics of species that undertake such movements appear to make them particularly vulnerable to detrimental impacts of climate change. Migrants are key components of biological systems in high latitude regions, where the speed and magnitude of climate change impacts are greatest. They also rely on highly productive seasonal habitats, including wetlands and ocean upwellings that, with climate change, may become less food-rich and predictable in space and time. While migrants are adapted to adjust their behaviour with annual changes in the weather, the decoupling of climatic variables between geographically separate breeding and non-breeding grounds is beginning to result in mistimed migration. Furthermore, human land-use and activity patterns will constrain the ability of many species to modify their migratory routes and may increase the stress induced by climate change. Adapting conservation strategies for migrants in the light of climate change will require substantial shifts in site designation policies, flexibility of management strategies and the integration of forward planning for both people and wildlife. While adaptation to changes may be feasible for some terrestrial systems, wildlife in the marine ecosystem may be more dependent on the degree of climate change mitigation that is achievable. You can dowload it from here: http://depot.knaw.nl/6384/1/Robinson_ea_4350.pdf Cheers, ltdm

    1 day ago
• IMRAN AHMED KHAN

  What is chlorophyll a? How could it be calculated through remote sensing?

  Chloropyll a

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  • 
    IMRAN AHMED KHAN replied

    Thanks a lot for all of you for kind suggestions.

    2 days ago
• Aishwarya Ravisankar

  I am currently working on seaweed associated bacteria.. Can anyone suggest me what type of metabolites does the bacteria produce??

  I have done with isolating the bacteria with different types of sea weeds

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  • 
    Mayank Pandey replied

    So you find bacteria ?

    15 days ago
• Sumalatha Bilijaji

  Which GIS software is used in study of marine ecology?

  to study the population of the plant species the software used is the ARC_GIS.

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    Antonio Olinto Ávila da Silva replied

    gvSIG is very easy to use and Quantum GIS is more complete. As said above both are free. R (www.r-project.org) also have some nice tools (http://cran.r-project.org/web/views/Spatial.html) and its usegvSIG is very easy to use and Quantum GIS is more complete. As said above both are free. R (www.r-project.org) also have some nice tools (http://cran.r-project.org/web/views/Spatial.html) and its use can be integrate with other software (http://www.youtube.com/watch?v=mMaMmaTfsQE). They are all multiplataform.

    Apr 22, 2012
• Rahul Muralidharan

  Sea turtles of India nesting delayed. Any concrete reasons behind it?

  I have been researching seasonal changes in sea turtle nesting patterns and near shore arrival of fish species such as Tuna. When I was interacting with the fishermen in Chennai, India, I heard fromI have been researching seasonal changes in sea turtle nesting patterns and near shore arrival of fish species such as Tuna. When I was interacting with the fishermen in Chennai, India, I heard from them that the seasonal patterns are changing drastically based on the traditional knowledge that was passed on to them. I would like to know the reason behind it. Climate change is one ultimate factor that is being discussed in various forums. However, I would like to know about other fragmentary causes.

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  • 
    Rahul Muralidharan replied

    Thank you, Dean.

    Mar 28, 2012
• Rahul Muralidharan

  A number of captive dolphins were rewarded with fish in return for tidying up their tank. One of them ripped up a large paper bag, hid away the pieces, and presented them one at a time to getA number of captive dolphins were rewarded with fish in return for tidying up their tank. One of them ripped up a large paper bag, hid away the pieces, and presented them one at a time to get multiple rewards http://www.bbc.co.uk/news/world-17116882

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  Join ResearchGate now to read this post.

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  • 
    Shehla Rais replied

    Yes, they do.

    Mar 9, 2012
• Marianna Limas

  Hey guys, The Global Partnership for Oceans is a growing alliance of governments, international organizations, civil society groups, and private sector interests that will mobilize knowledge andHey guys, The Global Partnership for Oceans is a growing alliance of governments, international organizations, civil society groups, and private sector interests that will mobilize knowledge and financial resources to address threats to ocean health, resilience and productivity. Let's raise awareness!

  http://www.globalpartnershipforoceans.org/
• Ayyappan Saravanakumar

  Please join Center of Advanced study in marine biology

  kindly join the alumni of this center

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  • 
    Chinnavenkataraman Govindasamy replied

    I am Dr.C. Govindasamy Associate Professor and Head Department of Oceanography and Coastal Area Studies School of Marine Sciences, Alagappa University, Thiondi Campus- 623 409 email:I am Dr.C. Govindasamy Associate Professor and Head Department of Oceanography and Coastal Area Studies School of Marine Sciences, Alagappa University, Thiondi Campus- 623 409 email: drcgsamy@gmail.com Kindly mail me for further information

    Feb 22, 2012
• Hala El- Kassas

  I am asking if any one can help me in making a presentation on the production of bioactive compounds by algae?

  I am doing a presentation about the production of bioactive compounds by algae - if any one has an idea, photos, diagrams or suggestion please send it. Thank you

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    Hala El- Kassas replied

    Thank u for ur kindness please send me a title of the paper to use it . Many thanks

    Feb 18, 2012
• Hussein Touliabah

  What is the relation between ecological parameters and plankton and bacteria in marine ecosystem especially in marine waterbody?

  What is the relation between ecological parameters and plankton and bacteria in marine ecosystem especially in marine waterbody? If we have like this studies in 3 season only, is it possible toWhat is the relation between ecological parameters and plankton and bacteria in marine ecosystem especially in marine waterbody? If we have like this studies in 3 season only, is it possible to publish in international Journal with ISI and IF? Please help me in this points
• Kavi Arasan

  Will the climate change affect on marine fish resources?

  Marine plankton are the primary producers of the ocean. If the global climate change affects the plankton directly then what will the food source for fishes?

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    Hector Maletta replied

    Surely changes in the environment affect vegetal and animal life. And the environment (including climate) has been changing for millions of years. What interests me now is the possible magnitudes ofSurely changes in the environment affect vegetal and animal life. And the environment (including climate) has been changing for millions of years. What interests me now is the possible magnitudes of the consequences within the coming decades or within this century. Not whether there would be consequences, but how large, and how worrying they would be (if there is motive to worry: perhaps the changes would be for the better!).. One possible basis to respond is looking at past climate changes. Most recently, climate has also changed: between 1880 and 1910 global temperatures fell by about 0.6°C; in 1910-1940 they rose perceptibly (by some +0.6°C), they fell by some 0.4°C during 1940-70, then rose again by about 0.6°C from the 1970s to the late 1990s, approximately at the same rate that they had risen in 1910-40 although starting and ending the rise at a higher level than the previous time. Global mean temperature has recently stalled: it is now on a flat trend-less period, with a flat linear trend since about 1995 to early 2012, or from 2000 to 2012 if one wishes to avoid including the temporary rise caused by El Niño in 1998. In view of this series of ups and downs during the 20th century, and based on scientific evidence, may somebody tell what consequences were observed on marine life in those periods of warming and cooling during the past century? There have been also some other cold and warm periods in the past: there has been for instance a medieval warm period that warmed water and land across the world, and most notably at least in the North Atlantic (leading the Vikings to settle on the then-green prairies of the island they called Greenland), and there was also a 'little ice age' lasting several centuries about the middle of the past millennium, and many other such periods in the more distant past, even not counting glacial eras. Is there any evidence (fossil or sedimentary or whatever) on the implications of those climate changes for marine life? Did marine life suffer much loss during the medieval warm period, or the precedent warm period during the times of the Roman Empire? There was much loss (or perhaps prosperity) of marine life or biodiversity in the warming 1920s and 1930s? Was that loss (or gain) higher or lower than any loss (or gain) in marine life or diversity caused by the intervening cooling period of the 1940s to the 1960s, or by the Little Ice Age? Is there any serious evidence about these matters?

    Feb 3, 2012
• Dinesh Babu Gnanasekaran

  Workshop at NFMC. Cyanobacterial Advanced Research Techniques-2012. For details kindly visit www.nfmc.res.in
• Kumaralingam Selvaraj

  I need ecology role on coral reef associated crabs pdf. And one more reprint i want food and feeding & behavioral change of coral crabs.

  If any can having the pdf please mention or sent my mail id.
• Kavi Arasan

  Is copepod a good feed for sponges?

  Whether it is possible to culture sponges using copepods as a feed?

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  • 
    Sven Zea replied

    Try yeast, microalgal, or bacterial suspensions (or a combination of all!)

    Jan 11, 2012