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:7/21/2015)... July 21, 2015  NXT-ID, Inc. (NASDAQ: ... authentication company focused on the growing mobile commerce ... announces that it has filed provisional patent 62/192218 ... This invention highlights next generation ... an account, but also the user using unique ...
(Date:7/20/2015)... -- Acuity Market Intelligence,s latest research "The Global Biometrics ... Privacy" forecasts that between 2014 and 2020 nearly ... to smart mobile devices by 2.2 billion mobile ... to generate more than $67.9 billion in total ...    "Biometrics is at the center ...
(Date:7/13/2015)... , Jul. 13, 2015 NXT-ID, Inc. (NASDAQ: ... biometric authentication company focused on the growing mobile ... provisional patent 62/188684 for BEHAVIORAL-DIRECTED AUTHENTIATION ... new convenient and secure method to make payments.  ... payment methods, introduced with its groundbreaking voice-direct payment ...
Breaking Biology News(10 mins):NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 2NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 3NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 4Biometrics on Smart Mobile Devices to Redefine Digital Identity with 12.9 Billion Biometric App Downloads between 2014 and 2020 2NXT-ID Patents Behavior-Directed Payments 2NXT-ID Patents Behavior-Directed Payments 3NXT-ID Patents Behavior-Directed Payments 4
... Baltimore, MD The human genome shares several peculiarities with the ... Our genetic blueprint contains numerous entities known as transposons, or ... to place on the chromosomes within a cell. ... transposon elements and the decaying remains of former transposons that ...
... meeting of the American Fisheries Society will take place in ... conference is "New Frontiers in Fisheries Management and Ecology: Leading ... http://afs2011.org/ All talks will be at the ... Eat but don,t get eaten: after restoration, young salmon better ...
... discovery by the University of Colorado Boulder and the ... "power plants" within cells known as mitochondria has implications ... and conditions due to mitochondrial defects. Led by ... collaboration with the UC-Davis team led by Professor Jodi ...
Cached Biology News:A 'jumping gene's' preferred targets may influence genome evolution 2A 'jumping gene's' preferred targets may influence genome evolution 3USGS research frontiers on fish at the American Fisheries Society Conference 2USGS research frontiers on fish at the American Fisheries Society Conference 3USGS research frontiers on fish at the American Fisheries Society Conference 4USGS research frontiers on fish at the American Fisheries Society Conference 5USGS research frontiers on fish at the American Fisheries Society Conference 6USGS research frontiers on fish at the American Fisheries Society Conference 7New cellular surprise may help scientists better understand human mitochondrial diseases 2
(Date:7/31/2015)... ... July 31, 2015 , ... R-Biopharm is proud ... partially hydrolyzed gluten in foods, has been accepted by AOAC International as Official ... Gluten in Fermented Cereal-Based Products by R5 Competitive ELISA,” based on a specific ...
(Date:7/30/2015)... CAMBRIDGE, Mass. , July 30, 2015 /PRNewswire/ ... software solutions for the interpretation and analysis of ... Matthew Fischer has joined the company ... Photo - http://photos.prnewswire.com/prnh/20150730/250931 ... astounding capabilities to integrate, interpret, analyze and explore ...
(Date:7/30/2015)... , July 30, 2015 ... by Product (Software, Molecular Modeling, PB/PK, PKPD, Trial Design, ... & Development, Preclinical, Clinical Trial), by End Users - ... Market is expected to reach USD 2,107.99 million by ... CAGR of 15.29%. Browse more than ...
(Date:7/30/2015)... 2015   Senomyx , Inc. (NASDAQ: SNMX ... to discover, develop, and commercialize novel flavor ingredients for ... financial results for the second quarter 2015. ... remain on track to achieve our commercial and financial ... of the Company. "Since our last quarterly earnings report, ...
Breaking Biology Technology:RIDASCREEN® Competitve Gliadin Receives AOAC Official First Action Status 2GenoSpace Introduces Matthew Fischer as Vice President of Sales and Marketing 2Biosimulation Market Worth 2,107.99 Million USD by 2020 2Biosimulation Market Worth 2,107.99 Million USD by 2020 3Biosimulation Market Worth 2,107.99 Million USD by 2020 4SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 2SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 3SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 4SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 5SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 6SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 7SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 8SENOMYX ANNOUNCES SECOND QUARTER 2015 FINANCIAL RESULTS 9
... assay effectively identifies melanoma, LA JOLLA, Calif., ... diagnostics for the early detection of,melanoma and other ... Cancer Research on its non-invasive assay that distinguishes ... Genomic Assay for,the Detection of Melanoma in Suspicious ...
... CEDAR KNOLLS, N.J., April 15 Emisphere,Technologies, Inc. ... will host its,Annual Stockholders Meeting on Thursday, May ... Two Whippany Road, Morristown, New Jersey. The,meeting will ... TECHNOLOGIES, INC., Emisphere Technologies, Inc. is a ...
... -ARIUS report new data and program updates on cancer stem cell ... ... April 15 /PRNewswire-FirstCall/ - ARIUS Research Inc., (TSX:,ARI), a biotechnology company ... it will be presenting new,findings and program updates related to its ...
Cached Biology Technology:DermTech Study on Melanoma Molecular Diagnostic to Be Presented at AACR 2Emisphere Technologies To Hold Annual Stockholders Meeting on May 8, 2008 2ARIUS presents new findings for anti-cancer antibody programs at AACR 2ARIUS presents new findings for anti-cancer antibody programs at AACR 3ARIUS presents new findings for anti-cancer antibody programs at AACR 4ARIUS presents new findings for anti-cancer antibody programs at AACR 5
Request Info...
... CultureWell cell culture systems provide ... cultured cells for staining and ... silicone gaskets preassembled with standard ... plates. The entire system is ...
... The Captivate magnetic separator ... be used in conjunction with ... C-21474, C-21476) or other magnetic ... most 96-well microplates. Cell Biology ...
ANTI L-DOPA...
Biology Products: