Navigation Links
The cormorant -- the 'black plague' or an example of successful species conservation?
Date:6/4/2008

now being applied religiously. This plan is structured with alternatives, which are introduced progressively and only implemented if the previous stage remained unsuccessful: 1. no intervention, 2. scaring birds (without shooting), 3. limiting local damage at commercial fish ponds, 4. strictly monitored reduction of resources, 5. reduction of regional populations, and 6. opening up national hunting as a last alternative. In this way the cormorant population in North America is to be reduced by approximately 160,000 birds, which according to estimations from the U.S. Fish and Wildlife Service will not lead to any apparent negative consequences for the population.

Apart from the institutional shortcomings in Europe, there is yet another reason why past attempts to regulate cormorant populations have failed. The structure of the cormorant population makes their regulation difficult: "Some of the birds are not breeding in spite of being sexually mature, because they are waiting for the chance to occupy a free nesting spot to be able to provide for their young", explains Sten Zeibig from the UFZ, who is currently working on a model of the cormorant population in Europe. "These so-called floaters provide a kind of natural buffer that protects the population from severe losses after disasters. If the breeding birds are killed, then the 'floaters' will take their place until this buffer is depleted, and the population breaks down to the point of being threatened with extinction."

In his model, Zeibig ran different scenarios and came to the following result: The most effective and also most ecologically compatible option was to reduce the capacity of the environment for breeding birds in that for example dead trees used for nesting are felled, and additionally preventing new nests from being built. Likewise smaller and medium-sized fish ponds can be covered with nets. "With this option one would kill two birds with one stone: The losses of fishermen would be r
'/>"/>

Contact: Tilo Arnhold
presse@ufz.de
49-341-235-1635
Helmholtz Association of German Research Centres
Source:Eurekalert  

Page: 1 2 3 4 5

Related biology news :

1. BIO-key(R) Showcasing Public Safety Solutions for BlackBerry Smartphones at 2008 LEIM Conference
2. Wiley-Blackwell to launch Journal of Flood Risk Management
3. Black carbon pollution emerges as major player in global warming
4. NOAA proposes federal regulations to protect black abalone
5. University of Minnesota study refutes belief that black men have more aggressive prostate cancer
6. American Society for Microbiology honors Jason T. Blackard
7. Coal and black liquor can produce energy from papermaking
8. Risk of common vaginal infection linked to preterm birth appears higher for blacks
9. Plague of kangaroos threatens one of Australias last remaining original native grasslands
10. Scientists discover why plague is so lethal
11. Model successfully predicts large river system fish diversity
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
The cormorant -- the 'black plague' or an example of successful species conservation?
(Date:10/16/2014)... NXT-ID, Inc. (NASDAQ: NXTD ... company focused on the growing mobile commerce market announces ... the Smart Wallet, at the 13 th annual ... global conference on the intersection of technology and the ... , founder and publisher of the Strategic News Service™, ...
(Date:10/15/2014)... spreading rapidly and to an unexpected extent. The outbreak ... and the virus shows a new disease dynamic in ... this reason, the German National Academy of Sciences Leopoldina, ... and the Union of the German Academies of Sciences ... epidemic today. , In the statement the academies call ...
(Date:10/14/2014)... thieves, prostate cancer tumors scavenge and hoard copper that ... avarice may be a fatal weakness. , Researchers ... prostate cancer cells by delivering a trove of copper ... cells brimming with the mineral, leaving non-cancer cells healthy. ... commercially available for other uses, could soon be tested ...
Breaking Biology News(10 mins):NXT-ID Inc. to Present at 13th Annual FiRe Conference 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 3Academies call for consequences from the Ebola virus epidemic 2Academies call for consequences from the Ebola virus epidemic 3Academies call for consequences from the Ebola virus epidemic 4Academies call for consequences from the Ebola virus epidemic 5Prostate cancer's penchant for copper may be a fatal flaw 2
... , April 27 Tyco International Ltd. (NYSE: ... of its Electrical & Metal Products business. Tyco expects to file documents ... months and to complete the proposed transaction in the first half of ... traded U.S. company. , , ...
... , April 27 The Breema Center today ... Germany the 12-16 of May, 2010. Breema is a ... emphasizes the mind-body connection.  The Intensive program is designed to ... long time students deepen their understanding of Breema and its ...
... Debt advice specialists at MoneySolve believe that the record level of personal ... of financial management and debt education. , ... More than 134,000 people became insolvent during 2009, by entering ... to experience severe financial difficulties. Experts at MoneySolve believe that by increasing ...
Cached Biology News:Tyco International To Pursue Spin-Off of Electrical & Metal Products Business 2Tyco International To Pursue Spin-Off of Electrical & Metal Products Business 3Breema Center to Host International Intensive Week in Buhl, Germany 2Breema Center to Host International Intensive Week in Buhl, Germany 3
(Date:10/22/2014)... Research and Markets  has announced the addition of ... Geography - Global Analysis and Forecast (2014 - 2020)" ... electronics, also called as polymer electronics or plastic electronics, ... small conductive molecules and electrically conductive polymers. It is ... carbon based, made using synthetic strategies developed in the ...
(Date:10/20/2014)... (PRWEB) October 20, 2014 Convey ... that a team from Iowa State University won first ... contest. Using a Convey HC-2ex, the team’s solution achieved ... times faster than the second place finisher. , Experts ... embarked upon the month long challenge, using a variety ...
(Date:10/20/2014)... 20, 2014  GenVec, Inc. (NASDAQ: GNVC ) ... Ph.D., from its board of directors effective on October 24, ... and served as its chairman from June 2006 to November ... and Corporate Governance and Audit Committees of the board.  ... decade of dedicated service to GenVec, and its stockholders," said ...
(Date:10/20/2014)... OR (PRWEB) October 20, 2014 Local ... participate in an investigational study of donor stem cells ... in stem cell therapy and has performed clinical stem ... this study is to determine if a single injection ... affected joints can help reduce pain and inflammation in ...
Breaking Biology Technology:Global Organic Electronics (Semiconductor, Conductive, Dielectric and Substrate) Market - Analysis and Forecast (2014 - 2020) 2Global Organic Electronics (Semiconductor, Conductive, Dielectric and Substrate) Market - Analysis and Forecast (2014 - 2020) 3Team from Iowa State Wins 2014 MemoCODE Design Contest Using Convey HC-2ex 2Team from Iowa State Wins 2014 MemoCODE Design Contest Using Convey HC-2ex 3Zola P. Horovitz To Retire From GenVec Board 2Cascade Veterinary Referral Center Seeks Candidates for an Investigational Study of Stem Cells for Dogs with Arthritis 2
... funded by the Biotechnology and Biological Sciences Research Council (BBSRC), ... new type of vaccine to protect chickens against coccidiosis, the ... of this type -- based on proteins from the coccidiosis ... could be produced on a larger scale than is currently ...
... of researchers has invented new artificial muscles strong enough to ... the same flexibility of an elephant,s trunk or octopus limbs. ... Express, the scientists and engineers from the University of ... of Texas at Dallas and Hanyang University in Korea detail ...
... MANSFIELD, Mass., Oct. 13, 2011 PrimeraDx today announced ... President of Corporate Development.   "Jeff,s diverse ... a great addition to the leadership team," Said Matt ... leverage the multimodal capabilities of the ICE Plex ...
Cached Biology Technology:A step towards new vaccines for most important chicken parasite 2A step towards new vaccines for most important chicken parasite 3UBC researchers invent tiny artificial muscles with the strength, flexibility of elephant trunk 2PrimeraDx Appoints Jeff Liter as VP of Corporate Development 2
... Note: Protein determined by Biuret Physical form: ... Tris-HCl, pH 7.6, 1 mM MgCl 2 ... Preparation Unit Definition: One unit will hydrolyze ... at pH 9.8 at 37 C. • ...
... Varioskan is a high performance ... dispenser and incubator. With the advanced ... and reliability for drug discovery assay ... for fluorescence intensity, time-resolved fluorescence and ...
Immulon 2 HB 1x8 Strip assembled, C-bottom; high binding irradiated surface to provide increased binding affinity for hydrophilic proteins and complexes....
... RCT series of refrigerated cold traps offers ... of low volatility/aqueous solvents or high volatility ... other vacuum concentrators/centrifugal evaporators. Also used for ... such as used in electron microscopes. Can ...
Biology Products: