HOME >> BIOLOGY >> NEWS
Shrinking ponds signal warmer, dryer Alaska

FAIRBANKS, 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 souther
'"/>

Contact: Marie Gilbert
marie.gilbert@uaf.edu
907-474-7412
University of Alaska Fairbanks
12-Oct-2006


Page: 1 2

Related biology news :

1. 1,000-year-old Arctic ponds disappearing due to global warming
2. Global warming is evaporating Arctic ponds, new study shows
3. Same species responds differently to same warming, depending on location
4. Ovarian cancer responds to aspirin derivative with chemo
5. UCLA researchers observe how the immune system recognizes and responds to cancer
6. Fish in ponds benefit flowering plants
7. Heart responds to fasting by remodeling vital energy-producing components
8. Increase in creeping vines signals major shift in southern US forests
9. Insulin sensitizer also serves as energy-conserving signal to the brain
10. Endosome-mediated signaling in plants
11. University of Colorado invention may allow thirsty crops to signal farmers

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:12/20/2016)... RALEIGH, N.C. and GENEVA, Dec, 20, 2016 ... performance biometric data sensor technology, and STMicroelectronics ... across the spectrum of electronics applications, announced today ... scalable development kit for biometric wearables that includes ... integrated with Valencell,s Benchmark™ biometric sensor ...
(Date:12/16/2016)... 2016 Research and Markets has announced the ... Forecast to 2021" report to their offering. ... The biometric vehicle access system ... CAGR of 14.06% from 2016 to 2021. The market is estimated ... reach 854.8 Million by 2021. The growth of the biometric vehicle ...
(Date:12/15/2016)... Calif. , Dec. 15, 2016   WaferGen ... publicly held genomics technology company, announced today that on ... Listing Qualifications Department of The Nasdaq Stock Market LLC ... closing bid price of WaferGen,s common stock had been ... Accordingly, WaferGen has regained compliance with Listing Rule 5550(a)(2) ...
Breaking Biology News(10 mins):
(Date:1/23/2017)... ... 2017 , ... CallTower is proud to announce that their hosted ... Award winner for 2017. , For three consecutive years, CallTower has been recognized ... was awarded with the hosted VoIP Excellence award and in 2015, they received the ...
(Date:1/21/2017)... 20, 2017 Bioptix, Inc. (Nasdaq: ... that on January 14, 2017 the Board of Directors ... Company will terminate certain employees associated with the September ... Company commenced terminations on January 16, 2017 and terminations ... Company may pay severance benefits in certain circumstances of ...
(Date:1/20/2017)... -- Ginkgo Bioworks, the organism company, announced today ... synthesis and assembly of DNA. The acquisition will ... DNA into Ginkgo,s automated organism engineering foundries, enabling ... new organism designs for application across a wide ... to significantly increase the world,s capacity to cost-effectively ...
(Date:1/19/2017)... HOUSTON , Jan. 19, 2017 ... formation of its Medical/Clinical Advisory Board.  This new ... who enhance the range and depth of expertise ... its novel prenatal diagnostic tests.  These experts are ... guidance for the company,s product development and commercialization ...
Breaking Biology Technology:
Cached News: