Cost, effort and outcome of mammal rediscovery: Neglect of small species
Cost, effort and outcome of mammal rediscovery: Neglect of small species
复制标题
DOI：
10.1016/j.biocon.2011.03.005
复制
发表时间：
2011-05-01
影响因子：
5.9
通讯作者：
Fisher, Diana O.
中科院分区：
文献类型：
--
作者：
Fisher, Diana O.
在重新发现被认为灭绝的物种的过程中，公众往往有强烈的兴趣，尽管重新发现的哺乳动物通常是热带森林中不显眼的小型居民。与保护有魅力的大型哺乳动物所需的干预措施相比，对小型物种的保护行动相对便宜。然而，受威胁的小型哺乳动物，如啮齿动物、蝙蝠、鼩 鼱和小型有袋动物，与大型物种相比，吸引的研究关注、保护行动、动物园空间和资金较少，大多数受威胁的小型哺乳动物没有得到关注，特别是热带森林栖息地的小型哺乳动物。我调查了在上个世纪重新发现的哺乳动物的体型是如何变化的，体型是如何与搜索和保护工作以及随后的恢复相关联的，以及重新发现的哺乳动物的恢复行动的成功。自19世纪以来，重新发现的哺乳动物的平均体型出现了大幅下降。较小的物种在重新发现之前失踪的时间更长，并且吸引了较少的搜索努力。在重新发现的小型哺乳动物的恢复计划中，成本估计较低。尽管如此，重新发现后的人口增长趋势与较大的身体大小，较大的物种恢复更好的保护工作，虽然小的物种下降，尽管保护工作。所有没有采取保护行动的物种（大多数是小物种）都在减少。60%的重新发现的哺乳动物仍然处于极度濒危或濒危状态，8%（6种）可能灭绝。我认为，重新发现的哺乳动物的保护成果可以大大提高适度增加对小型物种的关注。(C)2011爱思唯尔有限公司保留所有权利。
There is often intense public interest in the process of rediscovery of species that were presumed extinct, although rediscovered mammals are typically small, inconspicuous inhabitants of tropical forests. Conservation actions for small species are relatively inexpensive compared to the interventions required to protect charismatic, large mammals. However, threatened small mammals such as rodents, bats, shrews and small marsupials attract less research attention, conservation actions, space in zoos, and funding than larger species, and most threatened small mammals receive no attention, particularly those in tropical forest habitats. I investigated how the body size of rediscovered mammals has changed during the last century, how body size is associated with search and conservation effort and subsequent recovery, and the success of recovery actions for rediscovered mammals. There has been a strong decline in the mean body size of rediscovered mammals since the 19th century. Smaller species were missing for longer before rediscovery, and attracted less search effort. Cost estimates were lower in recovery plans for smaller rediscovered mammals. Despite this, increasing population trend after rediscovery was associated with larger body size, and larger species recovered better with conservation effort, although small species declined despite conservation effort. All species with no conservation actions (the majority of small species) were declining. Sixty percent of rediscovered mammals remain critically endangered or endangered, and 8% (6 species) are likely to be extinct. I argue that conservation outcomes for rediscovered mammals could be greatly improved by a modest increase in attention to small-bodied species. (C) 2011 Elsevier Ltd. All rights reserved.