香港六合彩开奖结果现场直播

Story 26 Mar, 2018

香港六合彩开奖结果现场直播 proposes new method for measuring species鈥 conservation success

A conceptual framework to help measure how conservation action helps species on the 香港六合彩开奖结果现场直播 Red List of Threatened Species听recover was presented in a paper published today in the journal Conservation Biology.

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Photo: 漏 N.J. Singh

The framework, presented by the 香港六合彩开奖结果现场直播 Red List Committee鈥檚 Task Force on Species Conservation Success under the working title of 鈥榯he 香港六合彩开奖结果现场直播 Green List of Species鈥, aims to complement the 香港六合彩开奖结果现场直播 Red List of Threatened Species罢惭听by providing a tool for assessing the recovery of species鈥 populations and measuring their conservation success.

鈥溝愀哿喜士苯峁殖≈辈 recognises the need to set aspirational goals for biodiversity conservation and to demonstrate that conservation does work. Preventing species extinctions and declines in biodiversity is critically important, but long-term conservation objectives are also needed to ensure that nature flourishes alongside humans. This new framework highlights an ambitious shift in conservation thinking towards ensuring the recovery of species, rather than just avoiding extinctions,鈥 says Craig Hilton-Taylor, Head of the Red List Unit and one of the paper鈥檚 co-authors.

To improve the consistency of targets in species recovery plans the paper proposes a definition of a 鈥榝ully recovered鈥 species, defining it as one that is viable and that fulfils its ecological roles in the ecosystems throughout its native range.

"In the new framework, we propose an objective, practical, and ambitious definition of a recovered species.听 We also propose an objective way of measuring how important conservation is for a species; what conservation has achieved and can achieve in the future," says H. Resit Ak莽akaya, lead author of the paper and professor at Stony Brook University in New York.

The new method complements the current system of the 香港六合彩开奖结果现场直播 Red List, which demonstrates听conservation success through real changes in species' status due to conservation efforts. The 香港六合彩开奖结果现场直播 Red List is the world鈥檚 most comprehensive, objective, global approach for evaluating the extinction risk of plant, animal and fungi species.

The concept of the new framework for measuring conservation success came from a desire to incentivise conservation action by quantifying conservation success. It uses four practical indices aimed at demonstrating conservation successes and the degree of species鈥 recovery, rather than threat status,鈥 says Barney Long, Co-chair of the Task Force and Director of Species Conservation at Global Wildlife Conservation.

The proposed framework considers the impacts of past conservation; what would happen if all current conservation ceased; expected gains from conservation action; and how close to 鈥榝ully recovered鈥 a species can get with effective conservation action.

For example, the Saiga Antelope moved from a classification of Vulnerable on the 香港六合彩开奖结果现场直播 Red Listin 1996 to Critically Endangered in 2002, and kept this status in the 2008 reassessment. However, through the proposed framework, the authors can demonstrate that past conservation efforts for this species have helped it recover and that the Saiga Antelope is dependent on future conservation actions for its survival.

The is the first published summary of a conceptual framework for the new method. The authors encourage feedback before launching the final product, planned for 2020. The framework will be tested extensively using many species from the terrestrial, marine and freshwater realms in order to find a system that works for all species.