HOME >> BIOLOGY >> NEWS
Spatial structure, dispersal, and management of a recovering raptor population

Most wild species experience considerable variation in habitat quality. Ecological theory that considers how organisms disperse between good and bad habitats has shown that such spatial structure can strongly influence population dynamics, but real-world implications have rarely been found. In this study, researchers from the University of California Santa Cruz show that the spatial structure of Peregrine Falcons in California has profoundly influenced the management and recovery of this species.

California peregrines suffered a dramatic population crash in the 1950s due to DDT-induced eggshell thinning, and this regional population has been highly managed by the introduction of over 800 young birds. Observations of banded birds showed that dispersal rates between three subpopulations--interior, coastal, and urban--were asymmetric, with essentially no dispersal out of the interior subpopulation and a strong tendency for coastal peregrines to disperse to the urban habitats. By fitting regional population models to the observed recovery of breeding pairs in each habitat, this study also characterized the demographic performance of peregrines within each subpopulation.

The spatial structure revealed by this study suggests that the highly productive interior subpopulation would have recovered largely on its own, without the reintroduced birds, while the coastal subpopulation would have been very slow to recover without the reintroduction effort. This study makes clear that understanding spatial structure can be critical for the effective conservation and management of animal populations.


'"/>

Contact: Tricia Morse
amnat@press.uchicago.edu
773-702-0446
University of Chicago Press Journals
9-Nov-2004


Page: 1

Related biology news :

1. New data reveal pregnancies exposed to accutane despite risk management program
2. Madagascan tropical forests return thanks to better management and well-defined ownership
3. Better risk management could cut MRSA infection rates
4. Study projects effects of forest management in Oregons Coast Range
5. PNNL becomes DOE flagship for incentive-based waste management practices
6. Plants management of nutrient suggests environmental remedies
7. Science for long-term management of the Marine Life Protection Act
8. Ten Commandments could improve fisheries management
9. Emerging research heralds new era of breast cancer management
10. New maps emphasize the human factor in wildfire management
11. Arctic nations wealth key to management of climate change

Post Your Comments:
(Date:10/22/2014)... identity analyst firm Acuity Market Intelligence forecasts that in ... have a chip-based National eID card, including near-complete regional ... Asia , with its vast population, is expected ... of all National eID cards issued between 2014 and ... National eID Industry Report: 2014 Edition" — projects ...
(Date:10/18/2014)... a group of 2,000 patients referred for evaluation ... potential molecular diagnosis for 25 percent, including detection ... new mutations contributing to disease, according to a ... is being released to coincide with the American ... sequencing analyzes the exons or coding regions of ...
(Date:10/17/2014)... for the first time how bacteria can grow directly ... the opportunity to get tremendous insights into bacteria behavior ... discovered the bacterial growth in chronic lung infections among ... by the immune cells. The researchers discovered the immune ... bacteria, forcing the bacteria to switch to a much ...
Breaking Biology News(10 mins):Half the World's Population Will Have Chip-Based National Electronic Identity (eID) Cards by 2018 2Whole-exome sequencing shows potential as diagnostic tool 2Scientists opens black box on bacterial growth in cystic fibrosis lung infection 2
(Date:10/22/2014)... Oct. 22, 2014 Research and ... "Global DNA Diagnostics Market (Product types, Application, ... Global Trends, Company Profiles, Demand, Insights, Analysis, Research, ... report to their offering. ... applications, techniques, end users and Geography) Global Size, ...
(Date:10/22/2014)... October 22, 2014 Involution Studios ... release of a new infographic, Understanding Ebola . ... a beautifully designed, easy to follow informative tool for ... of outbreak, symptoms and prevention. , "As the news ... the 2014 Ebola outbreak represents not only a healthcare ...
(Date:10/22/2014)... According to new market research ... (Consulting, Integration, Deployment & Support), by Service Model ... Private, Others (Hybrid & Community)) - Global Forecast ... the Cloud Professional Services Market into various sub-segments ... It also identifies the drivers and restraints for ...
(Date:10/22/2014)... KONG , Oct. 22, 2014  aTyr Pharma ... that rare disease expert John C. McKew , ... McKew brings more than two decades of expertise in ... Institutes of Health, Wyeth Research and Genetics Institute, Inc. ... aTyr,s efforts to expand and translate its novel Physiocrine ...
Breaking Biology Technology:Global DNA Diagnostics Market (Product types, Application, Technology, End User and Geography) - Forecast to 2020 2Global DNA Diagnostics Market (Product types, Application, Technology, End User and Geography) - Forecast to 2020 3Involution Studios' Ebola Infographic Provides Key Disease Information and Statistics at a Glance 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 3Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 4Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 5aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 2aTyr Pharma Appoints John C. McKew, Ph.D., as Vice President, Research 3
Cached News: