Navigation Links
First nearshore survey of Antarctic krill reveals high density, stable population in shallow waters

Using smaller vessels that allow access to shallow, nearshore waters, researchers from Stony Brook University and the Southwest Fisheries Science Center conducted the first multi-year survey of the population of Antarctic krill (Euphausia superba) in coastal waters near Livingston Island and discovered that nearshore waters had significantly higher krill biomass density than offshore waters. They also found that the nearshore waters had less interannual variation than offshore waters. These findings were published in the July issue of the Canadian Journal of Fisheries and Aquatic Sciences.

Antarctic krill are tiny shrimp-like organisms that are an integral part of the Southern Ocean food chain. Krill are an important food resource for penguins, seals, and some whales in the Southern Ocean, and are harvested for use in aquaculture feed and human dietary supplements.

"Nearshore krill biomass is generally most accessible and attractive to land-breeding predators as well as to human fishers competing for this valuable resource," said Dr. Warren.

Because large research vessels cannot safely travel in shallow nearshore waters, previous population surveys of Antarctic krill were restricted to offshore sampling. With funding provided by the National Science Foundation Office of Polar Programs and the United States Antarctic Marine Living Resources program, Dr. Joseph Warren, assistant professor in the School of Marine and Atmospheric Sciences at Stony Brook University, and Dr. David Demer, leader of the Advanced Survey Technologies Program at the Southwest Fisheries Science Center, conducted six acoustic surveys from small boats in the nearshore waters north of Livingston Island, Antarctica. From 2000 through 2007, they examined the abundance and distribution of Antarctic krill in coastal waters within several miles of shore. Deploying their scientific equipment from a 6 m inflatable boat, Warren and Demer were able to carry out their measurements in water ranging from 500 to 2 m in depth. They compared their observations in the nearshore waters with those from offshore surveys of the western Scotia Sea conducted during the same year.

"Although the spatial area of our nearshore survey is quite small when compared with that of the entire Scotia Sea, the high and stable densities of krill in shallow water may be more important ecologically than the offshore krill," said Dr. Warren.


Contact: Leslie Taylor
Stony Brook University

Related biology news :

1. Discovered: Audubons first engraving of a bird
2. First step toward electronic DNA sequencing: Translocation through graphene nanopores
3. First-of-its-kind map details the height of the globes forests
4. NTU gets GreenLite for Singapores first truly eco-friendly bus
5. InQ Biosciences Introduces First Fully Integrated Cell Research System
6. First of its kind: WSU led Bio-Jet fuel project officially gets off the ground
7. Flemish researchers provide the first experimental evidence of dynamic allostery in protein regulation
8. Bacterial diversity of Tablas de Daimiel studied for first time
9. First preliminary profile of proteins in bed bugs saliva
10. UCI researchers develop worlds first plastic antibodies
11. Research on stem cells wins first prize for Hebrew University researcher
Post Your Comments:
Related Image:
First nearshore survey of Antarctic krill reveals high density, stable population in shallow waters
(Date:11/17/2015)... 17, 2015 Paris ... --> Paris , qui s,est ... DERMALOG, le leader de l,innovation biométrique, a inventé le ... et empreintes sur la même surface de balayage. Jusqu,ici, ... l,autre pour les empreintes digitales. Désormais, un seul scanner ...
(Date:11/12/2015)... Nov. 12, 2015  Arxspan has entered into ... and Harvard for use of its ArxLab cloud-based ... tools. The partnership will support the institute,s efforts ... chemical research information internally and with external collaborators. ... for managing the Institute,s electronic laboratory notebook, compound ...
(Date:11/9/2015)... Nov. 09, 2015 ... of the "Global Law Enforcement Biometrics ... --> ) has announced ... Enforcement Biometrics Market 2015-2019" report to ... Markets ( ) has announced the ...
Breaking Biology News(10 mins):
(Date:11/30/2015)... ... November 30, 2015 , ... Global Stem Cells Group ... a new closed system for isolating adipose-derived stem cells. The announcement starts a new ... adipose tissue. SVF is a component of the lipoaspirate obtained from liposuction of excess ...
(Date:11/30/2015)...  An interventional radiology technique shows promise for helping morbidly ... a study being presented today at the annual meeting of ... (RSNA). --> --> ... radiologists as a way to stop bleeding in emergency situations, ... of treating obesity is new. Mubin Syed , ...
(Date:11/30/2015)... ALBANY, N.Y. , Nov. 30, 2015 /PRNewswire-USNewswire/ ... led by assistant chemistry professor Jan Halámek, is ... level.   --> ...   --> ... researchers at UAlbany have discovered a straightforward concept ...
(Date:11/30/2015)... 30, 2015 Spherix Incorporated (Nasdaq: ... the fostering and monetization of intellectual property, today ... initiatives designed to create shareholder value. ... Spherix. "Based on published reports, the total addressable ... billion and Spherix will seek to secure fair ...
Breaking Biology Technology: