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:7/22/2014)... feature natural habitats and trees and not just asphalt ... to a University of Colorado Boulder study. , Working ... provide stress-reducing benefits for youth, according to a paper ... The study is one of the first of its ... to green settings and stress. , "Many schools already ...
(Date:7/22/2014)... Conn. , July 22, 2014 ... the growing m-commerce market, announces its next generation smart ... 30-minute consumer oriented television show that airs on ... NewsWatch regularly features top technology ... July 31st on the History Channel (6:00-6:30am ET/PT) ...
(Date:7/21/2014)... researchers have detected genetic fragments of Middle East Respiratory ... holding a camel infected with the virus. The work, ... open-access journal of the American Society for Microbiology, indicates ... disease can be transmitted through the air. , MERS, ... has been identified in 699 people as of June ...
Breaking Biology News(10 mins):Natural-terrain schoolyards reduce children's stress, says Colorado University-Boulder study 2Natural-terrain schoolyards reduce children's stress, says Colorado University-Boulder study 3NXT-ID's Next Generation Wocket Smart Wallet to be Featured on NewsWatch, Airing on History Channel, FYI Network and ION Network 2NXT-ID's Next Generation Wocket Smart Wallet to be Featured on NewsWatch, Airing on History Channel, FYI Network and ION Network 3Middle East Respiratory Syndrome coronavirus detected in the air of a Saudi Arabian camel barn 2
... between tiny single-celled algae and highly specialized bacteria. Their ... the oceans by taking nitrogen from the atmosphere and ... use. Details of the symbiosis, published in ... from the investigation of a mysterious nitrogen-fixing microbe with ...
... Just as women are advised to get plenty of folic ... new research suggests another very similar nutrient may one day ... Consuming greater amounts of choline ... may lower an infant,s vulnerability to stress-related illnesses, such as ...
... Bethesda, MD FASEB MARC (Minority Access to Research ... the 2012 Biomedical Engineering Society (BMES) Annual Meeting in ... meant to promote the entry of underrepresented minority students, ... science community and to encourage the participation of young ...
Cached Biology News:Unusual symbiosis discovered in marine microorganisms 2Unusual symbiosis discovered in marine microorganisms 3Unusual symbiosis discovered in marine microorganisms 4Nutrient in eggs and meat may influence gene expression from infancy to adulthood 2Nutrient in eggs and meat may influence gene expression from infancy to adulthood 3
(Date:7/22/2014)... SHENZHEN, China , July 22, 2014 ... Tech), a subsidiary of BGI, the world,s largest ... a new human whole exome sequencing service based ... service includes in-depth bioinformatics analysis and SNP validation, ... 31, 2014. Complete Genomics, highly ...
(Date:7/22/2014)... July 22, 2014 In chemical ... an increasingly common sight. The rapid rise of ... now well- established as a core gas measurement ... has made them the gas analyzer technology of ... conditions encountered in some processes have limited their ...
(Date:7/22/2014)... , July 22, 2014  The Broad ... million from philanthropist Ted Stanley aimed ... bringing new treatments based on molecular understanding to ... The Stanley commitment – the ... largest for scientific research in general – will ...
(Date:7/22/2014)... Md. , July 22, 2014  United ... today that it will release its second quarter ... July 29, 2014. United Therapeutics will ... 2014, at 9:00 a.m. Eastern Time.  The teleconference ... dialing 1-970-315-0533.  A rebroadcast of the teleconference will ...
Breaking Biology Technology:BGI Tech Launches Human Whole Exome Sequencing Service on Complete Genomics' Advanced Platform 2BGI Tech Launches Human Whole Exome Sequencing Service on Complete Genomics' Advanced Platform 3METTLER TOLEDO Shows How Tunable Diode Lasers (TDLs) Can Be Installed Where No TDLs Have Gone Before 2$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 2$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 3$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 4$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 5$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 6$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 7$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 8$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 9$650 million commitment to Stanley Center at Broad Institute aims to galvanize mental illness research 10
... (NYSE: DGX ), the leading provider of diagnostic ... shareholders,on Friday, May 16th at 10:30 am ET., ... Relations,section of the company Web site at http://www.questdiagnostics.com/investor ... broadcast, a replay will be available on,the Web site ...
... study supports the potential for QLT,s drug elution technology ... reduce and ... QLT Inc. (NASDAQ: QLTI; TSX:,QLT) announced today results from ... QLT Plug Delivery, Inc., of its punctal plug,drug delivery ...
... 12 Amylin Pharmaceuticals,Inc. (Nasdaq: AMLN ) will ... May 14, 2008 at 3:05 p.m. CT / 1:05 ... Finance and Chief Financial Officer of,Amylin Pharmaceuticals, will be ... breakout session will be webcast, and a,recording will be ...
Cached Biology Technology:QLT reports initial proof of concept data for punctal plug delivery technology 2QLT reports initial proof of concept data for punctal plug delivery technology 3QLT reports initial proof of concept data for punctal plug delivery technology 4
... Many differences exist between the various commercial ... glass slide used, the length and GC ... and the manufacturing protocol employed all influence ... analysis. With all the different variables ...
... The ICS-1500 system provides excellent ... dual-piston pumping, electrolytic suppression, and column ... instrument offers outstanding sensitivity and stability. ... quieter baselines for trace-level work. Operate ...
... Automatic grid, subgrid and spot finding overcome tedious ... template assignment , ... Extensive background and signal options to optimize, ... results , Characterize more precisely through ...
... UNIchip AV-400 contains 400 unique ... nitrocellulose-coated glass slide. The proteins, a ... are arrayed in quadruplicate for high-quality ... specific chip layout guarantee high validity ...
Biology Products: