Navigation Links
Extreme winters impact fish negatively
Date:2/15/2013

Wcologists from Ume University and the Norwegian University of Science and Technology in Trondheim have studied fish communities and fish habitat and reviewed the importance of winter conditions for fish in streams and rivers in cold regions. The findings are now being published in the journal BioScience.

It is well known that winter can be a stressful season for plants and animals in streams and rivers. It is reasonable to assume that more extreme weather conditions are the most taxing, but the ecological significance of this is poorly understood.

The research team, headed by Professor Christer Nilsson at Ume University, describes how extreme conditions especially those associated with ice formation and ice break-up vary over time and affect both the non-living river environment and its fish. For example, streams can fill up with ice and kill all the fish that do not manage to flee to backwaters or stretches with deep, quiet water that is not filled with ice. Young fish are especially vulnerable.

The researchers also discuss how humans have impacted what happens in streams and rivers in the winter.

"Rivers that have been exploited for hydroelectric power can be especially hard for fish to live in, because the way hydropower is produced often means that the flow changes radically very quickly and often, which can lead to repeated ice break-ups and a great deal of anchor ice formation. When the ice cover at the surface disappears, cold air is fed downward in the water and forms ice crystals that cover the bottom, making it hard for fish to survive," says Christer Nilsson.

The scientists draw a number of conclusions from the study. One is that more measurements are needed in order to be able to predict when extreme situations in waterways may arise and that information about both the lives of different fishes and how they are affected by extreme events should be included in such data gathering. Another is
'/>"/>

Contact: Christer Nilsson
christer.nilsson@emg.umu.se
46-090-786-6003
Umea University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Low rainfall and extreme temperatures double risk of baby elephant deaths
2. Global warming less extreme than feared?
3. University of Tennessee study predicts extreme climate in Eastern US
4. California is home to extreme weather, too
5. UK butterfly populations threatened by extreme drought and landscape fragmentation
6. Warming causes more extreme shifts of the Southern Hemispheres largest rain band
7. Research links extreme summer heat events to global warming
8. Newfound gene may help bacteria survive in extreme environments
9. Exome sequencing of health condition extremes can reveal susceptibility genes
10. Antioxidant shown to reduce blindness risk in extremely premature babies
11. AGU: Unique microbes found in extreme environment
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Extreme winters impact fish negatively
(Date:5/19/2015)... , May 19, 2015  Technology is rapidly advancing, ... and in the cloud. Passwords and their management are ... OTP and standards-based specifications such as those developed by ... use of passwords presents for BYOD, COPE, IoT, and ... biometric identity protocol. In response to ...
(Date:5/11/2015)... 2015  Synaptics Incorporated (NASDAQ: SYNA ), ... announced the appointment of Wajid Ali ... reporting to Rick Bergman , President and ... Officer, Kathleen Bayless , who announced her ... Ali brings extensive financial management expertise to Synaptics, ...
(Date:5/7/2015)... 2015 Fingerprint Cards (FPC) ... FPC1035, FPC,s smallest touch fingerprint sensors to date.  ... for integration on the backside of the phone, ... possibilities to integrate touch fingerprint sensors in the ... possibilities for module manufacturers to customize the look ...
Breaking Biology News(10 mins):HYPR Corp. Biometric Security Integration Kit Shields Applications and Devices Across the Internet of Things 2HYPR Corp. Biometric Security Integration Kit Shields Applications and Devices Across the Internet of Things 3Synaptics Appoints Wajid Ali as Senior Vice President and Chief Financial Officer 2FPC Introduces its Smallest Touch Fingerprint Sensors to Date 2
... 28, 2009, Drinking cherry juice could help ease the ... Oregon Health & Science University presented at the American College ... showed people who drank tart cherry juice while training for ... than those who didn,t. Post-exercise pain can often indicate ...
... both milk feeding and in the weaning diet are ... have independent influences on body composition in early childhood, ... The Endocrine Society,s Journal of Clinical Endocrinology & ... suggest that the early environment may be a significant ...
... to alleviate diseases associated with menopause, she didn,t realize ... feeding hundreds of millions of people. The Northern ... the University of Arizona identified a nontoxic chemical technology ... which feast on crops intended for human consumption. ...
Cached Biology News:Is cherry juice a new 'sports drink?' 2Breastfeeding duration and weaning diet may shape child's body composition 2NAU discovery could help feed millions 2NAU discovery could help feed millions 3
(Date:5/20/2015)... DUBLIN , May 20, 2015 Research and ... addition of the "Top Technologies in HW_Technical Insights" ... division of this report evaluated technology trends in the ... trends that are likely to have an impact in ... depth analysis of the top 10 health and wellness ...
(Date:5/20/2015)... The global genotyping market is expected ... forecast period of 2015 to 2020 to reach $17.0billion ... drug discovery and development process and to provide personalized ... to this,heavy investments by key manufacturers to offer advanced ... market growth. Browse 113 market data tables & 37 ...
(Date:5/20/2015)...  Haemonetics Corporation (NYSE: HAE ) announced today ... present at The Jefferies 2015 Global Healthcare Conference in ... st , 2015 at 8:30am Eastern time.  ... via webcast at: http://wsw.com/webcast/jeff88/hae ... is a global healthcare company dedicated to providing innovative ...
(Date:5/20/2015)... PARK, North Carolina , 20. ... führende Unternehmen für klinische Logistik (Clinical ... für das Geschäftsjahr 2014, das am ... eingereicht. Das Unternehmen hat die Marktentwicklung ... Logo - http://photos.prnewswire.com/prnh/20110930/NY78064LOGO ...
Breaking Biology Technology:Top Technologies in the Health and Wellness Industry 2015 2Genotyping Market Growing at 22.3% CAGR to 2020: Research Based on Technology, Applications, Opportunities, Challenges and Key Players. 2Genotyping Market Growing at 22.3% CAGR to 2020: Research Based on Technology, Applications, Opportunities, Challenges and Key Players. 3Genotyping Market Growing at 22.3% CAGR to 2020: Research Based on Technology, Applications, Opportunities, Challenges and Key Players. 4Genotyping Market Growing at 22.3% CAGR to 2020: Research Based on Technology, Applications, Opportunities, Challenges and Key Players. 5Marken schließt Ergebnisse für das Geschäftsjahr 2014 ab 2
... Quanterix Corporation, a company enabling a new generation of ... ngle Mo lecule A rray (SiMoA ™ ... of its Prostate Specific Antigen (PSA) test, a fifth-generation ... predictor of five-year biochemical recurrence (BCR)-free survival following radical ...
... to make a highly efficient and yet cheaper silicon ... the cost of solar energy can be halved. ... Institute of Microelectronics (IME), the new thin-film silicon solar ... grade silicon. However it is able to generate electricity ...
... deCODE genetics today ... with Pfizer Inc., the objective of which is to ... to Systemic Lupus Erythematosis by utilizing deCODE,s expertise in ... extensive population and genetic resources, including DNA samples and ...
Cached Biology Technology:Quanterix PSA Test Found to be a Reliable Predictor of Prostate Cancer Recurrence Following Surgery 2Quanterix PSA Test Found to be a Reliable Predictor of Prostate Cancer Recurrence Following Surgery 3NTU and A*STAR Institute of Microelectronics develop cheaper yet efficient thin film solar cells 2deCODE Announces Agreement With Pfizer to Search for Variants in the Human Genome That Confer Risk of Systemic Lupus Erythematosis 2
The VersArray hybridization chamber is used for manual (coverslip) hybridization of microarrays. The chamber accommodates 2 slides and is watertight to allow incubation of slides in a water bath. Dim...
5X StabilCoat Immunoassay Stabilizer is a 5X concentrate solution of StabilCoat Immunoassay Stabilizer. The shelf-life of 5X StabilCoat Immunoassay Stabilizer is 2 years when stored at 4C. Product ...
... Yellow crystalline solid. PROTECT FROM LIGHT. Useful in cell ... Purity: ≥98% by TLC. Soluble in DMSO ... of a 10 mM stock in DMSO is recommended. ... H 2 O with rapid mixing (e.g. 10 μl ...
Monoclonal antibodies conjugated with rhodamine...
Biology Products: