HOME >> BIOLOGY >> NEWS
Increasing Frequency Of El Nino Takes Toll On Northern Hemisphere's Only,,Penguins

El Nino means milder winters for some in the United States and flooding and mudslides for others. For the penguins living in the Galapagos Islands off South America, it means possible starvation.

The increasing number and strength of warm-water El Nino events, along with a decline of colder-water La Nina events, have reduced the population of Galapagos penguins by half since 1970, says researcher Dee Boersma, a University of Washington zoology professor and a leading authority on temperate- and equatorial-zone penguins. Only recently had the penguins shown signs of recovery from drastic losses during the last two decades, she says. That was before the current El Nino.

Boersma's most recent analysis of the long-term effects of El Nino on the Galapagos penguin population was published in the May issue of the journal Condor.

Additionally, she returned to the Galapagos for two weeks in early May to examine the impact of the current El Nino, the strongest this century, on the penguin population. Her observations were striking: dead marine iguanas and sea lions, undernourished flightless cormorants and a generally emaciated penguin population in which no juveniles were seen.

"What that suggests is that none of the penguins bred in the last six months, or if they did breed none of (the chicks) survived to become adults," said Boersma. In the equatorial Pacific Ocean surrounding the islands, she measured water temperatures of 83 to 84 degrees Fahrenheit, much warmer than usual and too warm to sustain the food supply for animals that normally feed in the water. Some of the marine iguanas that normally forage in intertidal basins were observed feeding on land.

"The islands were very lush, green and verdant, which is unusual," Boersma said. "It's like the ocean is the desert right now and the land is the garden. It's usually the other way around."

Boersma is concerned that the increased intensity and frequency of El Nino events, combined with fewer and mi
'"/>

Contact: Vince Stricherz
vinces@u.washington.edu
206-543-2580
University of Washington
26-May-1998


Page: 1 2 3

Related biology news :

1. Increasing international insect threat to stored food
2. Increasing ozone over the Atlantic ocean
3. Increasing carbon dioxide relieves drought stress in corn, researchers say
4. Increasing biodiversity is not always best
5. Increasing nitrogen in Earths soils may signal global changes, say U. of Colorado researchers
6. Increasing carbon dioxide threatens coral reefs
7. Increasing Carbon Dioxide Threatens Tropical Coral Reefs
8. Bacteria Becoming Increasingly Resistant To Antibiotics, But New Vaccines Are On The Horizon
9. Increasing Threat Of Extinction For Amphibians? Scientists To Seek Answers At NSF Workshop
10. The Environmental Consequences Of Increasing Food Production
11. What it Takes: Design principles to broaden participation in SET

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


(Date:8/23/2018)... ... 2018 , ... RURO, Inc., an industry-leading lab software provider, ... growing cloud-based laboratory information system. , With the success of the streamlined version ... growth throughout 2018, the RURO team has been hard at work expanding LimitLIS® ...
(Date:8/17/2018)... ... August 16, 2018 , ... ... an established epigenetics service provider based in Gent, Belgium. NXT-Dx provides a ... methylation assays using pyrosequencing or Next-Generation Sequencing and Illumina’s Infinium Methylation EPIC ...
(Date:8/15/2018)... (PRWEB) , ... August 15, 2018 , ... The ... the NEW FX 635 Laser’s unveiling. Doctors from around the U.S. will gain ... NEW FX 635, Erchonia Corporation completed another successful clinical trial that has ...
Breaking Biology News(10 mins):
(Date:9/12/2018)... ... September 11, 2018 , ... Leading regenerative veterinary medicine ... Practitioners Conference (AAFP) later this month. The company’s CEO and founder, ... the treatment of chronic kidney disease in felines at a poster session on ...
(Date:9/7/2018)... ... September 05, 2018 , ... Now available on live stream, the NanoScientific Symposium ... 19, 2018. With a panel of industry leaders from Harvard, Cornell, RPI, IBM, SUNY ... insights from experts in the field. Register today to be a part of ...
(Date:9/7/2018)... ... 06, 2018 , ... Flagship Biosciences’ MuscleMap algorithm that supports ... as effective as manual pathology. The study, “Validation of a Muscle-Specific Tissue Image-Analysis ... in the Archives of Pathology & Laboratory Medicine on August 31, 2018. Download ...
(Date:8/31/2018)... ... August 29, 2018 , ... A ... University of Southampton and the Institute of Industrial Science, the University of Tokyo, ... dramatically accelerate the exploration and study of hard to reach deep sea ecosystems, ...
Breaking Biology Technology:
Cached News: