Navigation Links
Shrinking ponds signal warmer, dryer Alaska

A first-of-its kind analysis of fifty years of remotely sensed imagery from the 1950s to 2002 shows a dramatic reduction in the size and number of more than 10,000 ponds in Alaska. The analysis, by University of Alaska Fairbanks scientists and published this week in the Journal of Geophysical Research, indicates that these landscape-level changes in arctic ponds are associated with recent climate warming in Alaska and may have profound effects on climate and wildlife.

Over the past 50 years, Alaska has experienced a warming climate with longer growing seasons, increased permafrost thawing, an increase in water loss due to evaporation from open water and transpiration from vegetation, and yet no substantial change in precipitation.

The shrinking of these closed-basin ponds may be indicative of widespread lowering of the water table throughout low-lying landscapes in Interior Alaska, write the authors. A lowered water table negatively affects the ability of wetlands to regulate climate because it enhances the release of carbon dioxide by exposing soil carbon to aerobic decomposition.

"Alaska is important in terms of waterfowl production and if you have a lowering of the water table that could have a potentially huge impact on waterfowl production," said Dave Verbyla, co-author and professor in the School of Natural Resources and Agricultural Sciences at UAF.

"This is an issue relevant to flyway management in terms of all the waterfowl that might use the Yukon Flats National Wildlife Refuge and overwinter elsewhere, and this is something that goes beyond the refuges in Alaska," said A. David McGuire, co-author and professor of ecology at the Institute of Arctic Biology at UAF.

National Wildlife Refuges cover more than 77 million acres in Alaska and make up 81% of the national refuge system. These refuges provide breeding habitat for millions of waterfowl and shorebirds that overwinter in more southerly regions of North Amer
'"/>

Source:University of Alaska Fairbanks


Page: 1 2

Related biology news :

1. Hepatitis C responds best to combo of ribavirin and interferon, study concludes
2. Plants respond similarly to signals from friends, enemies
3. Bound for destruction: Ubiquitination protects against improper Notch signaling
4. Viral protein influences key cell-signaling pathway
5. Researchers find promising cancer-fighting power of synthetic cell-signaling molecule
6. Edible bivalves as a source of human pathogens: signals between vibrios and the bivalve host.
7. Scientists discover that three overlapping signals in embryo help get the backbone right
8. After a time-shift, mixed signals from the circadian clock
9. Researchers make surprise discovery that some neurons can transmit three signals at once
10. Structure-building cell signals also may influence learning and memory
11. Fox Chase study shows that weakened T-cell receptor signals change T-cell lineage
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Shrinking ponds signal warmer dryer Alaska

(Date:8/21/2014)... landmark study aimed at improving the food intake, health ... care homes is among three projects at the University ... from the Canadian Institutes of Health Research (CIHR). ... Health Sciences at Waterloo, and a Schlegel research chair ... years to investigate why many Canadians living in long-term ...
(Date:8/21/2014)... of the water window? It consists of radiations in ... absorbed by the water in biological tissues. New theoretical ... radiations within the water window. These could be the ... image of the biological samples or to be used ... the physical mechanism needed to efficiently generate the harmonic ...
(Date:8/21/2014)... A team of researchers at Louisiana Tech ... using affordable, consumer-grade 3D printers and materials ... contain antibacterial and chemotherapeutic compounds for targeted ... doctoral students and research faculty from Louisiana ... collaborated to create filament extruders that can ...
Breaking Biology News(10 mins):Grants will fund landmark aging research at Waterloo 2Water window imaging opportunity 2Louisiana Tech University researchers use 3D printers to create custom medical implants 2Louisiana Tech University researchers use 3D printers to create custom medical implants 3
... Journal of Animal Science , researchers evaluated how different levels ... to the researchers, the effects of selenium supplementation on the ... extensively in horses. Dr. Laurie Lawrence, animal science professor ... in soil and forages varies across the United States. She ...
... of consuming omega-3 long chain polyunsaturated fatty acids such ... sources of these fatty acids in the human diet ... of Saskatchewan, Department of Animal and Poultry Science are ... of farmed fish. As wild fish stocks ...
... reporting "a significant step forward" in proving the feasibility of ... for exotic new life forms. Their description of successful deployment ... seafloor lander equipped with a mini-laboratory the size of a ... of DNA in the deep oceans appears in ACS, ...
Cached Biology News:Researchers study selenium's effects on horses 2
(Date:8/21/2014)... , Aug. 21, 2014  BioSpecifics Technologies Corp. ... developing first in class collagenase-based products marketed as ... in the U.S. and XIAPEX ® in ... from a randomized, double-blind Phase 2a study of ... edematous fibrosclerotic panniculopathy. The results showed that all ...
(Date:8/21/2014)... research team including DESY scientists has observed tiny quantum ... reports in the journal Science that the ... the nanodroplets. It is the first time that the ... samples of what is known as superfluid helium, have ... best expectations," says Andrey Vilesov of the University of ...
(Date:8/21/2014)... IA (PRWEB) August 21, 2014 His ... LIBERTY Opening , The Court of His Majesty Willem-Alexander, ... will attend the Grand Opening of POET-DSM Advanced Biofuels’ ... Wednesday, Sept. 3. , The King will take part ... opening activity, scheduled for 11 a.m.-12:20 p.m. and tour ...
(Date:8/21/2014)... , Aug. 21, 2014  Decision Resources ... Brazil and Mexico ... uptake of several newly approved agents, the anticipated ... indication and the launch of emerging biologics will ... In particular, the emerging IL-5 inhibitors will introduce ...
Breaking Biology Technology:BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 2BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 3BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 4BioSpecifics Technologies Corp. Announces Positive Data from Phase 2a Study of CCH for Treatment of Cellulite 5Scientists observe quantum vortices in cold helium droplets 2His Majesty Willem-Alexander, King of the Netherlands, to Attend Project LIBERTY opening 2His Majesty Willem-Alexander, King of the Netherlands, to Attend Project LIBERTY opening 3Asthma Agents Currently Face a Suboptimal Coverage Environment in Brazil and Mexico, and as the Treatment Armamentarium Expands, Competitiveness Will Further Intensify 2Asthma Agents Currently Face a Suboptimal Coverage Environment in Brazil and Mexico, and as the Treatment Armamentarium Expands, Competitiveness Will Further Intensify 3
... Fla., April 14 Phlo Corporation,(Pink Sheets: PHCP) ... stock certificates are negotiable in connection with,market transactions ... current,position in Phlo common stock. This clarification was ... number of brokers and clearing firms,will not negotiate ...
... in the second quarter of 2008 ... ... Ardea,Biosciences, Inc. (Nasdaq: RDEA ) today announced that preclinical data ... compounds demonstrating potent,activity against the human-immunodeficiency virus (HIV), including NNRTI-,resistant strains, with ...
... basis of blood-based ColonSentry(TM) test -, TORONTO, ... company focused on developing blood-based biomarker tests for ... today reported,positive performance results from a large validation ... of a patient,s current risk for,colorectal cancer. This ...
Cached Biology Technology:Phlo Clarifies That Pre-Reverse Split Certificates Are Negotiable in Market Transactions 2Ardea Presents Preclinical Data on Novel Next Generation Non-Nucleoside Reverse Transcriptase Inhibitors Demonstrating Potent Anti-HIV Activity Against Resistant Viruses 2Ardea Presents Preclinical Data on Novel Next Generation Non-Nucleoside Reverse Transcriptase Inhibitors Demonstrating Potent Anti-HIV Activity Against Resistant Viruses 3GeneNews reports positive results from validation study of colorectal cancer biomarkers in late-breaking abstract at AACR 2GeneNews reports positive results from validation study of colorectal cancer biomarkers in late-breaking abstract at AACR 3
Physical Form: powder Color: white Removes FLAG peptide from N-terminal and Met-N-terminal fusion proteins. Supplied with optimized enterokinase buffer....
This antibody detects ubiquitinated proteins on SDS-PAGE immunoblots. It does not detect free ubiquitin....
... Jouan B4i ventilated and BR4i refrigerated multifunction centrifuges ... speed operation at a low sound level with ... for biocontainment. Their AUTO-LOCK rotor exchange system without ... for use within seconds. Instant rotor ...
... ventilated and BR4i refrigerated multifunction centrifuges are equally ... at a low sound level with a large ... Their AUTO-LOCK rotor exchange system without tools ensures ... within seconds. Instant rotor exchange (5 ...
Biology Products: