marine and freshwater aquatic ecology and hydrobiology

• Bhoopendra Verma

  Is there a correlation between phosphate concentration and production, diversity of zooplankton?

  Is phosphate the limiting factor in diversity? How does phosphate work in aquatic ecosystem to maintain the zooplankton production and diversity?

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  • 
    Muvundja Amisi Fabrice replied

    Of course, if it is proved that P is the limiting nutrient for that ecosystem, P bio-availability will boost primary production and thus will enhance the secondary production which comprisesOf course, if it is proved that P is the limiting nutrient for that ecosystem, P bio-availability will boost primary production and thus will enhance the secondary production which comprises zooplankton. The relationship will depend on the efficiency of the zooplankon to graze the phyto and the phyto to uptake the nutrients within the prevailing conditions.

    3 days ago
• Renalda Munubi

  Looking for a protocol to analyze biochemical compounds in periphyton

  I want to analyze protein, essential fatty acids (EPA and DHA) and triglycerides in periphyton (attached algae). Can anyone help me with a simple method on how to preserve and analyze my samples? InI want to analyze protein, essential fatty acids (EPA and DHA) and triglycerides in periphyton (attached algae). Can anyone help me with a simple method on how to preserve and analyze my samples? In addition to that, this lake contains carbonate compounds when you scratch periphyton from the rocks. Is it going to affect my results? How could I control this?

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    Thomas Martin Priester replied

    One of the formost researchers in this area is Amy E. Wright of the Florida Atlantic University (Harbor Branch). She is very approachable and also has lots of graduate students who would be pleasedOne of the formost researchers in this area is Amy E. Wright of the Florida Atlantic University (Harbor Branch). She is very approachable and also has lots of graduate students who would be pleased to discuss things with you. There is a URL on Amy at http://www.fau.edu/hboi/ProjectManagers/AmyWright/awhome.php

    7 days ago
• Zdeslav Karlovac

  Highway storm water management and pollution prevention

  I am working on my Ph.D. about highway storm water management and pollution prevention in karst area. Need help me with some literature, guidelines. Highway Rijeka - Zagreb in Croatia passes thruI am working on my Ph.D. about highway storm water management and pollution prevention in karst area. Need help me with some literature, guidelines. Highway Rijeka - Zagreb in Croatia passes thru karst area in which strategic reserves of drinking water are located. Drainage system is closed, watertight and before emission in environment storm water passes thru oil and grit separator or oil and grit separator and lagoon depending of sanitary protection zone.

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    Piotr Rzymski replied

    I have not seen any papers concerning hihway runoff water purification using any hydrobionts you mentioned however this subject sounds very interesting and please check this paperI have not seen any papers concerning hihway runoff water purification using any hydrobionts you mentioned however this subject sounds very interesting and please check this paper out: http://www.engineersireland.ie/EngineersIreland/media/SiteMedia/groups/societies/water-enviro/AN-ANALYSIS-OF-A-CONSTRUCTED-WETLAND-FOR-TREATING-ROAD-RUNOFF-IN-IRELAND.pdf?ext=.pdf I think that macrophytes such as Phragmites, Typha have great potential in runoff purification as they build large biomass int he short period of time and are easy to remove from the ponds before winter. Your idea sounds very interesting and I will follow any updates on it from you. Good luck

    12 days ago
• Miss Vineeta Girdoniya

  Is it possible to detect pollutants along with their colour using a fish?

  I have found by working with a species of fish that it shows toxic effects of pollutants on it along with the same colour of pigmentation in the fins, as those of the pollutants. Has anyone elseI have found by working with a species of fish that it shows toxic effects of pollutants on it along with the same colour of pigmentation in the fins, as those of the pollutants. Has anyone else heard of this?

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    Miss Vineeta Girdoniya replied

    Unfortunately I am not working with Paris green. It was only by coincidence that I saw fishes in my aquarium attacked by some kind of disease. When I treated them with a very low concentration of theUnfortunately I am not working with Paris green. It was only by coincidence that I saw fishes in my aquarium attacked by some kind of disease. When I treated them with a very low concentration of the antiseptic liquid and I found a very high degree of colouration in the fins. And this happens again, when I change the treatment chemical, pigmentation of the fins also changes to the particular color of chmical.

    20 days ago
• Bala Subramanian

  How can I isolate methanogenic bacteria from aquatic sediments?

  Is there any well established methods for culturing such methanogenic bacteria?
• Miguel A. Olvera-Novoa

  Does somebody know which organism this is growing on the surface of a sea cucumber fry?

  This organism is invading juveniles in a sea cucumber culture.

  

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    Tatiana Kozlova replied

    OK, it's good to know. About a half of inch?

    27 days ago
• Taheri Reza

  How do phytoplankton remove heavy metals from the marine environment? Which heavy metals are removed from wastewater by phytoplankton?

  We work on 4 species of phytoplankton to remove nitrate and phosphate from wast water and we get the result very well. Now we want to remove heavy metal from wast water through phytoplankton.

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    Timur Pavluk replied

    Cu, Zn, Cd, Pb and many others metalls are adsorbed by planktonic alga. It is well known fact!!! Most of the metalls are binded, as Alireza mentioned above, on the cellulose/silicose shell of anCu, Zn, Cd, Pb and many others metalls are adsorbed by planktonic alga. It is well known fact!!! Most of the metalls are binded, as Alireza mentioned above, on the cellulose/silicose shell of an algae cell. Then, alga are eaten by zooplankton, which consumed by fish. Finally, all metalls will be delivered to fish and people, eating these fishes. Trophic links, however!!!

    Apr 4, 2012
• Karnan Chinnadurai

  Is here anybody working with Flowcam? I have some doubts in that.

  Can explain in detail about the Fluorescent filters in the Flowcam VS 2.2.7?
• Tim Beardsley

  Bill Mitsch of Ohio State University and his colleagues created two artificial freshwater wetlands, one planted, one not, and followed them for 15 years. Both took up a lot of carbon from the air andBill Mitsch of Ohio State University and his colleagues created two artificial freshwater wetlands, one planted, one not, and followed them for 15 years. Both took up a lot of carbon from the air and took phosphorus and nitrogen out of the river water they were provided. The unplanted one took up more carbon, but remained less diverse in plant species and also released more methane. This link to Mitsch's article in the March BioScience is good for 6 weeks only: http://www.jstor.org/stoken/ucaltoken/QRR6vRhq898ypbFNuvPA/full

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  • 
    Melanie D. Harrison replied

    Tim, Thanks for the link I will be sure to check it out. Melanie

    Mar 12, 2012
• Muzzammil Iqbal Siddiqui

  How can I draw blood from the Nile Tilapia (Oreochromis niloticus)?

  It is 5 to 6 inches big in size.

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  • 
    Benoît Sotton replied

    Directly from heart with a heparinized needle.

    Feb 2, 2012
• Sirinimit Boonyuen

  Guideline/standard as the limit for the increased Suspended solids of Turbidity on coral and other marine flora/fauna?

  The offshore dredging and sediment disposal would cause the increased turbidity in the vicinity of the project. Thus, the standard (max limit) for the increased of SS or Turbidity would be veryThe offshore dredging and sediment disposal would cause the increased turbidity in the vicinity of the project. Thus, the standard (max limit) for the increased of SS or Turbidity would be very useful to be applied during the study to minimize the impact to the minimum extent.
• Ashok Kumar Verma

  Is there any breeding technique of unionoids? what is the spawning behavior of freshwater mussels?

  Lamelliden marginalis is a freshwater mussel which can be subjected to freshwater pearl farming. it breeds naturally in fresh waters. fertilization is external. the species is cultured in freshwaterLamelliden marginalis is a freshwater mussel which can be subjected to freshwater pearl farming. it breeds naturally in fresh waters. fertilization is external. the species is cultured in freshwater ponds for the production of freshwater pearls.

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  • 
    Starrlight Augustine replied

    If you do not find previous studies on spawning behaviour, how do you plan to proceed? i.e. what type of data will/can you acquire, what level of detail are you looking for, do you want bioenergeticIf you do not find previous studies on spawning behaviour, how do you plan to proceed? i.e. what type of data will/can you acquire, what level of detail are you looking for, do you want bioenergetic modelling to make quantitative predictions etc.

    Dec 5, 2011
• Ashok Kumar Verma

  one of the designed freshwater pearl produced by a progressive pearl farmer in H.P. at Una.