Quantifying habitat losses and gains made by U.S. Species Conservation Banks to improve compensation policies and avoid perverse outcomes

Conservation Letters

Megan Barnes¹  Jeffrey W. Matthews²  Laura J. Sonter³  Martine Maron³ 

[1] Department of Natural Resources and Environmental Management University of Hawaii Manoa Honolulu Hawaii;Department of Natural Resources and Environmental Sciences University of Illinois Chicago Illinois;School of Earth and Environmental Sciences The University of Queensland St Lucia Australia;

关键词: biodiversity;    California;    ecosystem services;    mitigation;    offsets;    statistical matching;   

DOI  :  10.1111/conl.12629

来源: DOAJ

【 摘 要 】

Abstract Compensation policies seek to counterbalance biodiversity losses caused by development; however, their effectiveness is rarely tested. We examined U.S. Species Conservation Banks (SCBs) in California, a compensation program initiated 30 years ago. We quantified the effect of 59 SCBs (15,350 ha) on habitat extent using statistical matching methods. SCBs averted a small, yet significant, amount of habitat loss (62 ha) between 2001 and 2011. However, unexpectedly, SCBs also averted significant habitat gains (1,424 ha). It is not possible to determine if losses averted by SCBs equaled losses caused by development for which credits were sold (because records of the latter do not exist), but estimated averted gains were 35 times greater than averted losses. To improve practice, SCBs must be designed to achieve outcomes that are additional and avoid crowding out other programs incentivizing statewide conservation goals.

【 授权许可】

Unknown