Navigation Links
Climate change may have little impact on tropical lizards
Date:5/17/2013

A new Dartmouth College study finds human-caused climate change may have little impact on many species of tropical lizards, contradicting a host of recent studies that predict their widespread extinction in a rapidly warming planet.

The findings, which appear in the journal Global Change Biology, offer new hope for survival of a creature thought to be doomed: http://onlinelibrary.wiley.com/doi/10.1111/gcb.12253/abstract

Most predictions that tropical cold-blooded animals, especially forest lizards, will be hard hit by climate change are based on global-scale measurements of environmental temperatures, which miss much of the fine-scale variation in temperature that individual animals experience on the ground, said the article's lead author, Michael Logan, a Ph.D. student in ecology and evolutionary biology.

To address this disconnect, the Dartmouth researchers measured environmental temperatures at extremely high resolution and used those measurements to project the effects of climate change on the running abilities of four populations of lizard from the Bay Islands of Honduras. Field tests on the captured lizards, which were released unharmed, were conducted between 2008 and 2012.

Previous studies have suggested that open-habitat tropical lizard species are likely to invade forest habitat and drive forest species to extinction, but the Dartmouth research suggests that the open-habitat populations will not invade forest habitat and may actually benefit from predicted warming for many decades. Conversely, one of the forest species studied should experience reduced activity time as a result of warming, while two others are unlikely to experience a significant decline in performance.

The overall results suggest that global-scale predictions generated using low-resolution temperature data may overestimate the vulnerability of many tropical lizards to climate change.

"Whereas studies conducted to date have made uniformly bleak predictions for the survival of tropical forest lizards around the globe, our data show that four similar species, occurring in the same geographic region, differ markedly in their vulnerabilities to climate warming," the authors wrote. "Moreover, none appear to be on the brink of extinction. Considering that these populations occur over extremely small geographic ranges, it is possible that many tropical forest lizards, which range over much wider areas, may have even greater opportunity to escape warming."


'/>"/>

Contact: John Cramer
john.d.cramer@dartmouth.edu
603-646-9130
Dartmouth College
Source:Eurekalert

Related biology news :

1. New study will help protect vulnerable birds from impacts of climate change
2. EU-funded study underlines importance of Congo Basin for global climate and biodiversity
3. UNH researchers find African farmers need better climate change data to improve farming practices
4. Fielding questions about climate change
5. Glacier-fed river systems threatened by climate change
6. Beating famine: Sustainable food security through land regeneration in a changing climate
7. Energy requirements make Antarctic fur seal pups vulnerable to climate change
8. Why spring is blooming marvelous (and climate change makes it earlier)
9. Carnegies Greg Asner named Energy/Climate Fellow by US State Department
10. Declines in Caribbean coral reefs pre-date damage resulting from climate change
11. Some corals like it hot: Heat stress may help coral reefs survive climate change
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/18/2017)... 2017 MedNet Solutions , an ... entire spectrum of clinical research, is proud to ... for the organization in terms of corporate growth, ... products and services. The company,s exceptional achievements can ... iMedNet ™ – ...
(Date:1/11/2017)... DES MOINES, Iowa , Jan. 11, 2017 /PRNewswire/ ... another industry first with the release of its patent-pending ... to quickly and reliably perform calibrations, securely upload data ... more flexibility for the customer. "Fighting drunk ... not only for the public at large, but also ...
(Date:1/4/2017)...  For the thousands of attendees at this year,s International Consumer Electronics ... and biometric measurement devices and services, will be featuring its new line ... A&D Medical,s special CES Exhibit Suite , the new upper arm ... company,s WellnessConnected product platform.  ... ...
Breaking Biology News(10 mins):
(Date:1/18/2017)... ... January 18, 2017 , ... uBiome, the leading ... by its Science Editor, Dr. Elisabeth Bik, in the December 2016 issue of ... joined uBiome in October 2016 from her previous position at Stanford University School ...
(Date:1/18/2017)... 2017 /PRNewswire/ - SQI Diagnostics Inc. (TSX-V: SQD; ... that develops and commercializes proprietary technologies and products ... today announced that Cameron Prange , President ... from its Board of Directors.  Mr. Prange,s resignation ... that have limited both his ability to act ...
(Date:1/17/2017)... 17, 2017  An international team of researchers ... St. Boniface Hospital Albrechtsen Research Centre/University of Manitoba ... unmet health need affecting nearly one in 15 ... Investigation, their results identify small molecule drugs with ... neuronal injury in animal models of metabolic, chemical ...
(Date:1/17/2017)... 17, 2017 Research and Markets has ... Diagnostics - Technologies, Markets and Companies" to their offering. ... ... remarkably during the past few years. More than 1,000 companies ... and 342 of these are profiled in the report along ...
Breaking Biology Technology: