Navigation Links
Save the whales? Sure, but how many?

How many wildebeest should live in the Serengeti" How many grizzly bears should call Yellowstone home" Are there too few tigers in the world" Conservationist biologists grapple with the task of setting population targets for the species they are trying to protect ?a decision steeped in politics, emotion, and sometimes, science.

In a new paper appearing in the journal Bioscience, the New York-based Wildlife Conservation Society (WCS) examines the current hodgepodge of population target levels (PTLs) being used by wildlife managers, and proposes a simpler, four-tiered system to measure conservation success. The paper cataloged 18 different approaches currently used to set PTLs, and showed the diverse ways in which they apply to national laws and international treaties.

According to the paper's author, WCS ecologist Dr. Eric Sanderson, 'minimum viable populations' ?the goal commonly used by wildlife managers that aims to have self-sustaining populations ?should be seen as the beginning, not the end, of conservation.

'People want much more from wild animals than to see them just persist: we want animals to interact with their environment, evolve over time, be beautiful and useful to us, and to satisfy ethical teachings regarding respect for nature,' said Dr. Sanderson.

Sanderson's system argues that once demographic sustainability has been achieved, conservation efforts should aim next for 'ecological functionality,' which means a species will serve its role in ecosystems, such as Pacific salmon providing marine-derived nitrogen to watersheds, or predators reducing pest species, or birds dispersing seeds.

'Sustainable human use' represents the next tier, where there are enough animals that they can be used by humans, consumptively (as in hunting or fishing) or non-consumptively (as in tourism.) Most models for sustainable use only conserve animals at the level of demographics, not ecology, Sanderson says.

The high est standard for animal populations is achieving 'historical baselines' where species are restored to when humanity as a whole had significantly less impact on the world as it does today. Dr. Sanderson writes that achieving this goal can be difficult due to lack of baseline data, though well-managed protected areas, with all the species present, can provide the examples that scientists and managers need.

'Having animals acting like animals in the fullest sense, seems the standard conservationists should seek, whether it's bison on the Great Plains or Asia's forests with tigers and their prey,' said Sanderson.


'"/>

Source:Wildlife Conservation Society


Related biology news :

1. Duke Experiments Boost Radiations Cancer-Killing Effects
2. Killing the messenger RNA -- But which one?
3. Controversial drug shown to act on brain protein to cut alcohol use
4. Mouse brain cells rapidly recover after Alzheimers plaques are cleared
5. Mouse brain tumors mimic those in human genetic disorder
6. New imaging method gives early indication if brain cancer therapy is effective, U-M study shows
7. First atlas of key brain genes could speed research on cancer, neurological diseases
8. NYU study reveals how brains immune system fights viral encephalitis
9. Stem cells from brain transformed to produce insulin at Stanford
10. Birds brains reveal source of songs
11. Loves all in the brain: fMRI study shows strong, lateralized reward, not sex, drive
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/3/2016)... VILNIUS, Lithuania , May 3, 2016 /PRNewswire/ ... today released the MegaMatcher Automated Biometric Identification ... deployment of large-scale multi-biometric projects. MegaMatcher ABIS can ... and accuracy using any combination of fingerprint, face ... of MegaMatcher SDK and MegaMatcher ...
(Date:4/26/2016)... , April 27, 2016 ... the  "Global Multi-modal Biometrics Market 2016-2020"  report to ... ) , The analysts forecast the ... CAGR of 15.49% during the period 2016-2020.  ... number of sectors such as the healthcare, BFSI, ...
(Date:4/14/2016)... , April 14, 2016 ... Malware Detection, today announced the appointment of Eyal ... new role. Goldwerger,s leadership appointment comes at ... heels of the deployment of its platform at several ... biometric technology, which discerns unique cognitive and physiological factors, ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... NEW YORK , June, 23, 2016  The ... students to envision new ways to harness living systems ... of Modern Art (MoMA) in New York ... more than 130 participating students, showcased projects at MoMA,s ... included Paola Antonelli , MoMA,s senior curator of ...
(Date:6/23/2016)... ... June 23, 2016 , ... Supplyframe, the Industry Network ... Supplyframe Design Lab . Located in Pasadena, Calif., the Design Lab’s mission is ... projects are designed, built and brought to market. , The Design Lab is ...
(Date:6/23/2016)... ... June 23, 2016 , ... In a new case report published ... how a patient who developed lymphedema after being treated for breast cancer benefitted from ... the paradigm for dealing with this debilitating, frequent side effect of cancer treatment. ...
(Date:6/23/2016)... Calif. , June 23, 2016  Blueprint Bio, ... biological discoveries to the medical community, has closed its ... Matthew Nunez . "We have received ... with the capital we need to meet our current ... essentially provide us the runway to complete validation on ...
Breaking Biology Technology: