Navigation Links
Human influences challenge penguin populations
Date:6/30/2008

The ecology of penguins makes these iconic swimming and diving seabirds of the Southern Hemisphere unusually susceptible to environmental changes. Pronounced warming in the Antarctic, as well as commercial fishing, mining, and oil and gas development at lower latitudes, has led to declines in many species, according to P. Dee Boersma, of the University of Washington in Seattle. In the July/August 2008 issue of BioScience, Boersma provides a first-person account based on 30 years of studying the birds. Counts of the penguin populations at the 43 remaining breeding "hotspots," even once every five years, could provide valuable insights into the variability of the ocean ecosystem and the populations' viability, Boersma writes. Yet counts are carried out only rarely, if at all.

The task is urgent, because many populations seem to be in rapid decline even as some temperate populations have expanded their range southward. Rapid reductions of sea ice off Antarctica in recent years threaten Adlie and emperor penguins, which need ice, but may benefit some populations of relatively ice-intolerant gentoo and chinstrap penguins. Increased snow and rain, another result of the changing climate, reduce breeding success in some gentoo and Adlie penguins.

Temperate penguins, such as Galpagos, Peruvian, and African species, are all declining. Mining of guano, egg harvesting, commercial fishing, and oil spills are the chief causes, according to Boersma, although tourism and increasingly severe El Nio events, probably resulting from climate change, are also partly responsible.

The threats to all penguin species are likely to grow in coming years. Boersma recommends the formation of a nongovernmental organization dedicated to monitoring major aggregations of penguins. Such an organization could provide advance warning of urgent threats and thus make amelioration possible.


'/>"/>

Contact: Jennifer Williams
jwilliams@aibs.org
202-628-1500
American Institute of Biological Sciences
Source:Eurekalert

Page: 1

Related biology news :

1. Nanotubes could help study retrovirus transmission between human cells
2. Newly identified role for power plants in human cells could lead to targeted therapies
3. Technique used in human ankle injuries modified to treat dogs knees
4. Synthetic cocoa chemical slows growth of tumors in human cell lines
5. Human Genomics and Proteomics
6. Metagenomics of skin reveals insights into the human microbiome
7. Gene mutations in mice mimic human-like sleep disorder, UT Southwestern researchers find
8. New study links fate of personal care products to environmental pollution and human health concerns
9. NASA study links Earth impacts to human-caused climate change
10. Human vision inadequate for research on bird vision
11. Fruit fly avoidance mechanism could lead to new ways to control pain in humans
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/30/2017)... 2017 Today, American Trucking Associations announced ... face and eye tracking software, became the newest ... "Artificial intelligence and advanced sensing ... a driver,s attentiveness levels while on the road.  ... detect fatigue and prevent potential accidents, which could ...
(Date:5/23/2017)... , May 23, 2017  Hunova, the first robotic gym for ... has been officially launched in Genoa, Italy . The ... and the USA . The technology was ... the market by the IIT spin-off Movendo Technology thanks to a 10 ... Multimedia News Release, please click: ...
(Date:5/6/2017)... -- RAM Group , Singaporean based technology ... biometric authentication based on a novel  quantum-state ... perform biometric authentication. These new sensors are based on a ... Group and its partners. This sensor will have widespread ... security. Ram Group is a next generation sensor ...
Breaking Biology News(10 mins):
(Date:10/10/2017)... ... October 10, 2017 , ... San Diego-based team building and cooking events company, ... today. The bold new look is part of a transformation to increase awareness, ... significant growth period. , It will also expand its service offering from its signature ...
(Date:10/10/2017)... Parks Associates announced today that Tom Kerber , Director ... , October 11 in Scottsdale, Arizona . Kerber will ... safety and security products impact the competitive landscape. ... Parks Associates: Smart Home Devices: Main Purchase Driver ... "The residential security market has experienced continued growth, and the introduction of ...
(Date:10/9/2017)... DIEGO , Oct. 9, 2017  BioTech ... biological mechanism by which its ProCell stem cell ... critical limb ischemia.  The Company, demonstrated that treatment ... amount of limbs saved as compared to standard ... the molecule HGF resulted in reduction of therapeutic ...
(Date:10/9/2017)... ... October 09, 2017 , ... ... in the medical journal, Epilepsia, Brain Sentinel’s SPEAC® System which uses the ... in detecting generalized tonic-clonic seizures (GTCS) using surface electromyography (sEMG). The prospective ...
Breaking Biology Technology: