Navigation Links
First nearshore survey of Antarctic krill reveals high density, stable population in shallow waters
Date:8/4/2010

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
leetaylor@notes.cc.sunysb.edu
631-632-8621
Stony Brook University
Source:Eurekalert  

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:
*Name:
*Comment:
*Email:
Related Image:
First nearshore survey of Antarctic krill reveals high density, stable population in shallow waters
(Date:4/5/2017)... KEY FINDINGS The global market for stem ... 25.76% during the forecast period of 2017-2025. The rise ... growth of the stem cell market. Download ... The global stem cell market is segmented on the ... cell market of the product is segmented into adult ...
(Date:4/3/2017)... April 3, 2017  Data captured by ... platform, detected a statistically significant association between ... to treatment and objective response of cancer ... to predict whether cancer patients will respond ... as well as to improve both pre-infusion potency ...
(Date:3/30/2017)... 2017 The research team of The Hong ... fingerprint identification by adopting ground breaking 3D fingerprint minutiae recovery and ... speed and accuracy for use in identification, crime investigation, immigration control, ... ... A research team led ...
Breaking Biology News(10 mins):
(Date:8/21/2017)... ... August 21, 2017 , ... Baltimore ... bio security firm, to bring its proprietary CANARY pathogen detection technology and high ... the Chinese firm has purchased an undisclosed number of PathSensors’ Zephyr pathogen detection ...
(Date:8/18/2017)... ... August 18, 2017 , ... ... the Semiconductor, MEMS, and Microfluidics Industries, announces the new Model 800E front and ... often in automated production mask aligners. OAI has already received and installed ...
(Date:8/16/2017)... Yorba Linda, Ca (PRWEB) , ... August 16, ... ... resist treatment by changing into a different cell type. Many treatments for specific ... tissue. A prominent example of targeted treatment is androgen deprivation therapy for advanced ...
(Date:8/16/2017)... and OXFORD, England , Aug. 16, 2017 ... for biotech executive search and leadership development, and Virdis Group, ... have created an exclusive alliance that enables clients to leverage ... "For our clients here in the ... access to a diverse population of leadership talent throughout the ...
Breaking Biology Technology: