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:3/30/2017)... , March 30, 2017  On April 6-7, ... Hack the Genome hackathon at Microsoft,s headquarters ... two-day competition will focus on developing health and wellness ... Hack the Genome is the first ... tremendous. The world,s largest companies in the genomics, tech ...
(Date:3/27/2017)... March 27, 2017  Catholic Health Services (CHS) ... Systems Society (HIMSS) Analytics for achieving Stage 6 ... sm . In addition, CHS previously earned a ... using an electronic medical record (EMR). ... level of EMR usage in an outpatient setting.  ...
(Date:3/22/2017)... Lithuania , March 21, 2017   ... and object recognition technologies, today announced the release ... kit (SDK), which provides improved facial recognition using ... cameras on a single computer. The new version ... to improve accuracy, and it utilizes a Graphing ...
Breaking Biology News(10 mins):
(Date:6/20/2017)... 2017  Kibow Biotech Inc., a pioneer in developing ... of a new patent covering a unique method for ... Patent and Trademark Office on May 23 rd ... of Bio award in 2014 in San ... approaches to chronic disease. Renadyl™, the first and only ...
(Date:6/19/2017)... ... June 19, 2017 , ... EDETEK, Inc., a ... that it is launching two new additions of its award-winning cloud-based platform CONFORM™: ... at the DIA 2017 Annual Meeting in Chicago, IL, June 19-22, 2017. , ...
(Date:6/16/2017)... , ... June 16, 2017 , ... CTNext , ... Innovation Awards (EIA), held at The LOFT at Chelsea Piers in Stamford. , Nine ... to a panel of judges for an opportunity to secure $10,000 awards to help ...
(Date:6/15/2017)... ... 15, 2017 , ... DuPont Industrial Biosciences (DuPont) announced that ... Bloomberg’s 2017 Sustainable Business Summit: Seattle this Thursday, June 15, at ... a panel titled “Developing a Corporate Renewables Strategy.” , “Consumers want to ...
Breaking Biology Technology: