文献类型：期刊文献

英文题名：Overcoming extreme weather challenges: Successful but variable assisted colonization of wild orchids in southwestern China

作者：Liu, Hong[1,2,3] Feng, Chang-Lin[4] Chen, Bao-Shan[3] Wang, Zhong-Sheng[5] Xie, Xiao-Qing[6] Deng, Zheng-Hai[7] Wei, Xin-Lian[7] Liu, Shi-Yong[7] Zhang, Zi-Bin[7] Luo, Yi-Bo[8]

第一作者：Liu, Hong

通信作者：Liu, H[1]

机构：[1]Florida Int Univ, Dept Earth & Environm, Miami, FL 33199 USA;[2]Fairchild Trop Bot Garden, Ctr Trop Plant Conservat, Coral Gables, FL 33156 USA;[3]Guangxi Univ, State Key Lab Conservat & Utilizat Subtrop Agrobi, Nanning 530004, Peoples R China;[4]Chinese Acad Forestry, Expt Ctr Trop Forestry, Pingxing 532600, Peoples R China;[5]Nanjing Univ, Sch Biol Sci, Lab Forest Ecol & Global Changes, Nanjing 210093, Jiangsu, Peoples R China;[6]Yachang State Forestry Farm, Guangxi 533209, Leye County, Peoples R China;[7]Yachang Natl Orchid Nat Reserve, Guangxi 533209, Leye County, Peoples R China;[8]Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China

年份：2012

卷号：150

期号：1

起止页码：68-75

外文期刊名：BIOLOGICAL CONSERVATION

收录：;Scopus(收录号：2-s2.0-84860219653);WOS:【SCI-EXPANDED(收录号:WOS:000305724100009)】；

基金：This research was supported by Grants from the Guangxi Chairman's Foundation (09203-04 to HL, BSC and YBL), the Mohamed bin Zayed species conservation fund (0905324 to HL and YBL) and the Ministry of Science and Technology of the People's Republic of China to (2005DIB6J144 to CLF). We are grateful to E. Menges, D. Odowd, K. Feeley and three anonymous reviewers for valuable comments on earlier drafts of the manuscript.

语种：英文

外文关键词：Extreme weather event; Hydropower projects; Managed relocation; Out-of-range translocation; Population dynamics; Tropical forest

摘要：Assisted colonization of endangered species to locations outside their native ranges in response to projected climate change has emerged as a potential, but highly controversial conservation tool. The debate has been largely philosophical and hypothetical as little biological data exist in the literature. In 2006, nearly 1000 endangered wild orchid plants belonging to 29 species were translocated to higher elevations in subtropical southwestern China in response to inundation threats from a hydropower project. We took advantage of this upward translocation to address one of the main biological concerns associated with assisted colonization, i.e. whether the target endangered species can survive in the novel environment that is projected to be suitable for them, sometime in the future. We assessed the impacts of two extreme weather events, translocation shock and herbivory, on survival of 20 of these species and 462 individuals that were translocated beyond their current range vs. within that range. A cold spell in 2008 on average caused 10% mortality, less than the mortality rate from herbivores. However, the cold spell was the only force that extirpated an out-of-range population. No mortality resulted from a drought event in 2010. The 5-year survival percentages were not different between low and wide elevation species (69.3% mean +/- 36.3% standard deviation vs. 67.3% +/- 30.9%). Orchids represent 10% of flowering plant diversity and are among the most endangered group of organisms due to a combination of their often specialized ecological requirements, habitat destruction, and overexploitation. The demonstrated ability to survive extreme environmental challenges indicates that assisted colonization may be a viable conservation tool for the many endangered orchids worldwide due to climate change and/or other reasons. (C) 2012 Elsevier Ltd. All rights reserved.