Navigation Links
Warming Antarctic seas likely to impact on krill habitats
Date:8/22/2013

Antarctic krill are usually less than 6 cm in length but their size belies the major role they play in sustaining much of the life in the Southern Ocean. They are the primary food source for many species of whales, seals, penguins and fish.

Krill are known to be sensitive to sea temperature, especially in the areas where they grow as adults. This has prompted scientists to try to understand how they might respond to the effects of further climate change.

Using statistical models, a team of researchers from the British Antarctic Survey and Plymouth Marine Laboratory assessed the likely impact of projected temperature increases on the Weddell Sea, Scotia Sea and Southern Drake Passage, which is known for its abundance of krill. This region has experienced sea surface warming of as much as 1C over fifty years. Projections suggest this could rise by another 1C by the end of the 21st century.

The models are based on equations which link krill growth, sea surface temperature, and food availability. An analysis of the results, published this week in the online journal PLOS ONE, suggests warming, if continued, could reduce the area of growth habitat by up to 20%.

In the early life stages krill require deep water with low acidity and a narrow range of temperatures for their eggs to successfully hatch and develop. The larvae then feed on algae on the underside of sea ice.

The adults require suitable temperatures and enough of the right type of food (larger phytoplankton) to successfully grow and reproduce. Many of these critical environmental features (temperature, acidity, sea ice and food availability) could be affected by climate change.

The projected effects of warming are not evenly spread. The island of South Georgia is located within the area likely to be worst affected. Here the reduction in krill habitat could be as much as 55%. The island is home to a range of animals such as fur seals and macaroni penguins that depen
'/>"/>

Contact: Paul Seagrove
psea@bas.ac.uk
44-012-232-21414
British Antarctic Survey
Source:Eurekalert

Page: 1 2

Related biology news :

1. Global investigation reveals true scale of ocean warming
2. Rapid upper ocean warming linked to declining aerosols
3. Ups-and-downs of Indian monsoon rainfall likely to increase under warming
4. Global cooling as significant as global warming
5. Better wheat for a warming planet
6. Are tropical forests resilient to global warming?
7. Volcanic aerosols, not pollutants, tamped down recent Earth warming, says CU-Boulder study
8. Jurassic records warn of risk to marine life from global warming
9. Southwest regional warming likely cause of pinyon pine cone decline, says CU study
10. Lungs of the planet reveal their true sensitivity to global warming
11. Global warming less extreme than feared?
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/18/2014)... Sept. 18, 2014 -- Arizona turned its newborn screening program ... few short months, earning it the first-ever Newborn Screening Quality ... of Dimes presented Will Humble, M.P.H., Arizona,s Department of Health ... today. Mr. Humble established a policy of full transparency for ... newborn blood samples to the lab for analysis, and set ...
(Date:9/18/2014)... of carbon and nitrogen comprise all spheres of ... systems have caused imbalances and perturbations that resulted ... Increased GHGs result in climate changes which influence ... and the atmosphere. Understanding these feedback mechanisms has ... environmental science during the past three decades. , ...
(Date:9/18/2014)... can swim up to 400 kilometres in search of a ... change. , Clownfish spend their entire adult lives under the ... wander the open ocean, says study co-author, Dr Hugo Harrison ... (Coral CoE) at James Cook University. , "In the past ... given a rare glimpse into how far they can swim, ...
Breaking Biology News(10 mins):March of Dimes honors Arizona with first-ever newborn screening award 2March of Dimes honors Arizona with first-ever newborn screening award 3Greenhouse gas research enters a new era 2Nemo's epic journey to find a new home 2
... A team led by researchers at the University ... the "superbug" methicillin-resistant Staphylococcus aureus (MRSA) is ... is well known for causing difficult-to-treat and potentially fatal ... 1990s it has also been infecting otherwise healthy people ...
... study shows for the first time that episodes of ... the 2001-02 drought, greatly accelerated development of the mountain ... to chart the evolution of the current pine beetle ... beetle outbreak in the two primary host species, the ...
... a daily multivitamin, but little is known about a multivitamin,s ... Brigham and Women,s Hospital (BWH) finds that daily multivitamin use ... A similar BWH study, announced last month, found daily ... 8 percent. The cardiovascular disease findings will be presented ...
Cached Biology News:Superbug MRSA identified in US wastewater treatment plants 22001-2002 drought helped propel mountain pine beetle epidemic, says CU study 22001-2002 drought helped propel mountain pine beetle epidemic, says CU study 32001-2002 drought helped propel mountain pine beetle epidemic, says CU study 4Daily multivitamin use does not reduce cardiovascular disease risk in men 2
(Date:9/19/2014)... , Sept. 19, 2014 Pfenex Inc. ... the development of high-value and difficult to manufacture proteins ... presenting at the 21 st Annual NewsMakers in ... . Bertrand Liang , chief executive officer ... development programs and business strategy on Friday, September 26, ...
(Date:9/19/2014)... September 19, 2014 Barnhardt Manufacturing ... Label for its Organic Cotton . The USDA ... of renewable biobased ingredients meets or exceeds levels set ... composed in whole or in significant part of agricultural, ... allow our Organic cotton to be immediately identified as ...
(Date:9/19/2014)... , September 19, 2014 ... Markets ( http://www.researchandmarkets.com/research/b2jxhs/micro_market ) has announced the addition of ... Columns"  report to their offering.       ... is one of the fastest-growing segments in the ... billion in 2013, and expected to reach $2.0 ...
(Date:9/19/2014)... September 19, 2014 The new , ... , available today on PharmaBoardroom.com for ... crisis that rocked the Spanish economy in 2009, and the ... community has remained pragmatic in times of trouble. ... the fifth biggest European market, and the general conditions to ...
Breaking Biology Technology:Pfenex to Present at Upcoming Industry Conference on September 26 2Barnhardt Manufacturing Company Earns USDA Certified Biobased Product Certification and Label for Organic Cotton 2Micro Market Monitor : Global Pre-packed Chromatography Columns 2PharmaBoardroom Releases New Spain Pharmaceuticals Report 2PharmaBoardroom Releases New Spain Pharmaceuticals Report 3
... (Nasdaq: SGMO ) today reported second quarter 2011 ... quarter ended June 30, 2011, Sangamo reported a consolidated net ... a net loss of $3.9  million, or $0.09 per share, ... 2011, the company had cash, cash equivalents and marketable securities ...
... 2011 Once routinely discarded during the birth process, ... life-saving stem cells that can be collected and stored ... and vast medical potential, published data shows that three ... about cord blood banking. In connection with ...
... Calif., July 26, 2011 Synterra Energy, Inc. ... and assets for waste biomass conversion from Pacific ... Lion Bio-Energy (Toledo, Ohio).  With the merger, Synterra ... bio-refineries for the economic production of renewable fuels, ...
Cached Biology Technology:Sangamo BioSciences Reports Second Quarter 2011 Financial Results 2Sangamo BioSciences Reports Second Quarter 2011 Financial Results 3Sangamo BioSciences Reports Second Quarter 2011 Financial Results 4Sangamo BioSciences Reports Second Quarter 2011 Financial Results 5Sangamo BioSciences Reports Second Quarter 2011 Financial Results 6Sangamo BioSciences Reports Second Quarter 2011 Financial Results 7Parent's Guide to Cord Blood Foundation Launches Nation's First Searchable Map of U.S. Sites for Donating Umbilical Cord Blood 2Parent's Guide to Cord Blood Foundation Launches Nation's First Searchable Map of U.S. Sites for Donating Umbilical Cord Blood 3Synterra Energy Merges Key Technologies to Commercialize Next Generation Integrated Bio-refinery 2
... SNPstream System Delivers 4,600 to Over 3 ... Genotyping System is capable of performing 4,600 ... Part of the GenomeLab family of products*, ... up to 48 SNPs in each well ...
Mouse monoclonal antibody to ACP2 - acid phosphatase 2, lysosomal...
Mouse monoclonal antibody to DCAMKL2 - doublecortin and CaM kinase-like 2...
... Tube Disperser System from IKA Works is the ... cleaner, safer, and more efficient way to disperse ... 2 to 15 ml inside sealed tubes. Depending ... of 4 different tube types. Each tube is ...
Biology Products: