Navigation Links
Slight changes in climate may trigger abrupt ecosystem responses
Date:1/16/2009

Some of these responses, including insect outbreaks, wildfire, and forest dieback, may adversely affect people as well as ecosystems and their plants and animals.

The U.S. Geological Survey led a new assessment of the implications of a warming world on "ecological thresholds" in North America. The report, which was commissioned by the U.S. Climate Change Science Program and authored by a team of federal and academic climate scientists, is based on a synthesis of published scientific literature and addresses what research and steps are needed to help mitigate resulting effects.

An ecological threshold is the point at which there is an abrupt change in an ecosystem that produces large, persistent and potentially irreversible changes.

"One of our biggest concerns is that once an ecological threshold is crossed, the ecosystem in question will most likely not return to its previous state," said USGS Associate Director for Biology Susan Haseltine. "The existence of thresholds should be a key concern of scientists and natural resource managers."

The team also emphasized that human actions may increase an ecosystem's potential for crossing ecological thresholds. For example, additional human use of water in a watershed experiencing drought could trigger basic changes in aquatic life that may not be reversible. Researchers and decision makers need to develop the tools necessary to predict the effects of specific ecological disturbances and to understand early warning signals of impending ecological thresholds.

The report also concludes that although not enough is known about ecological thresholds, researchers do already know that ecosystems will differ significantly in their respective thresholds. More vulnerable ecosystems, such as those that already face stressors other than climate change, will almost certainly reach their threshold for abrupt change sooner.


'/>"/>

Contact: Colleen Charles
colleen_charles@usgs.gov
703-648-4110
United States Geological Survey
Source:Eurekalert

Page: 1

Related biology news :

1. Chesapeake Bay ecosystem health remains poor, but slightly improved in 2007
2. Old developmental pathways spawn revolutionary evolutionary changes
3. New study shows fish respond quickly to changes in mercury deposition
4. New study shows fish respond quickly to changes in mercury deposition
5. Great Plains historical stability vulnerable to future changes
6. New technique reveals subtle force-induced changes in biomolecules conformation
7. Tolerance to inhalants may be caused by changes in gene expression
8. A new explanation for evolutionary changes in genetic sex-determination systems
9. Hearing changes how we perceive gender
10. UC Davis bird-flu expert calls for changes in early-warning system
11. Elevated carbon dioxide changes soil microbe mix below plants
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:11/22/2016)... November 22, 2016 According to the new market ... Print, Face, Vein, Signature, Voice), Multi-Factor), Component (Hardware and Software), Function (Contact ... MarketsandMarkets, the market is expected to grow from USD 10.74 Billion in ... 16.79% between 2016 and 2022. Continue Reading ... ...
(Date:11/17/2016)... 17, 2016 Global Market Watch: Primarily ... Banks, Population-Based Banks and Academics) market is to witness a ... Biobanks shows the highest Compounded Annual Growth Rate (CAGR) of ... during the analysis period 2014-2020. North America ... followed by Europe at 9.56% respectively. ...
(Date:11/15/2016)... Research and Markets has announced the addition of the ... offering. ... The global bioinformatics market is ... Billion in 2016, growing at a CAGR of 21.1% during the ... driven by the growing demand for nucleic acid and protein sequencing, ...
Breaking Biology News(10 mins):
(Date:12/9/2016)... ... ... Aditya Humad, Acting CFO of AxioMed and Managing Partner of KICVentures, is ... is now gaining interest from Silicon Valley. “It was satisfying to complete the due ... say that, “We expect interest to continue to rise as AxioMed completes its cleanroom ...
(Date:12/9/2016)... PUNE, India , December 9, 2016 ... Product & Services (Primer, Probe, Custom, Predesigned, Reagent Equipment), Application (Research, ... - Forecasts to 2021" published by MarketsandMarkets, the global market is ... Billion in 2016, at a CAGR of 10.6% during the forecast ... ...
(Date:12/8/2016)... Philadelphia, PA (PRWEB) , ... December 08, 2016 ... ... fan engagement platforms, the business of innovation is taking over sports. On Thursday, ... executive will explore how technology is disrupting the playing field at a Smart ...
(Date:12/8/2016)... (PRWEB) , ... December 08, 2016 , ... ... light to control cells — optogenetics — is key to exciting advances in ... the art, spatially patterned light projected via free-space optics stimulates small, transparent organisms ...
Breaking Biology Technology: