虎的本土分布(Panthera tigris)

IF 4.6 2区 环境科学与生态学 Q1 BIODIVERSITY CONSERVATION
Eric W. Sanderson, Dale G. Miquelle, Abishek Harihar, Urs Breitenmoser, Christine Breitenmoser-Würsten, David M. Cooper, Kaveh Faziolahi, Kim Fisher, John Goodrich, Thomas N. E. Gray, Aili Kang, Andrew C. Kitchener, Douglas C. MacMillan, Stephane Ostrowski, Lucinda Royte, Kanchan Thapa, Nobuyuki Yamaguchi
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引用次数: 0

摘要

目的乡土地域图是生物地理学、系统发育学和保护学的基础文献。我们将一个物种的本地范围定义为在人类成为影响物种分布的主要因素之前,该物种可能被发现的生态区域(或部分生态区域),开始于大陆的地理排列和主导气候(或至少是)大致与当前条件一致的时候。我们开发了一种结构化的,普遍适用的方法来绘制物种的本地范围,并将此过程应用于虎(Panthera tigris)。地理位置:亚洲陆地。为了指导我们的制图工作,我们综合了一个数据库,其中包含了7万多只老虎的观测数据,包括日期和地点。我们开发了一个结构化的德尔菲过程,在气候生态位模型的帮助下,将土著范围的类别分配给生态区。我们使用人为修改的生物群落(“Anthrome 12K”)数据集分析了生态区域尺度上老虎栖息地的变化,以提出第一次重大人类影响的日期。最后,我们估计了老虎已经灭绝的生态区域的灭绝日期。结果发现老虎曾经占据了大约1150万平方公里的可能的土著居民范围,跨越了116个生态区。我们还绘制了额外的1,170万平方公里的勘探范围和120万平方公里的可能居住范围。这些地区与36个现代国家重叠。人类对该物种栖息地的严重破坏似乎始于6000多年前的一些地区,但在其他地区尚未实现。在一些干旱的生态地区,人类活动似乎在过去适度地增加了栖息地的可用性,但在过去8500年里,老虎的本土活动范围总体上已经减少了90%到95%。我们定义了一个物种的“本地范围”,开发了一个可复制的生物地理程序,将该程序应用于老虎,并讨论了对其他物种的可转移性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

The Indigenous Range of the Tiger (Panthera tigris)

The Indigenous Range of the Tiger (Panthera tigris)

Aim

Indigenous range maps are fundamental documents in biogeography, phylogeny and conservation. We define the indigenous range of a species as ecoregions (or parts of ecoregions) where the species was likely found before humans became a major factor shaping the species' distribution, beginning at a time when the geographical alignment of the continents and the prevailing climate are (or at least were) roughly consistent with current conditions. We developed a structured, generally applicable method to map a species' indigenous range and applied this process to the tiger (Panthera tigris).

Location

Terrestrial Asia.

Methods

To guide our mapping, we synthesised a database of over 70,000 tiger observations with dates and locations. We developed a structured Delphi process to assign categories of indigenous range to ecoregions aided by a climate niche model. We analysed tiger habitat change at the ecoregional scale using the anthropogenically modified biomes (‘Anthrome 12K’) dataset to suggest dates of first significant human impact. Finally, we estimated extirpation dates for ecoregions where tigers have been extirpated.

Results

We found the tiger once occupied a likely indigenous resident range of approximately 11.5 million km2, crossing 116 ecoregions. We also mapped an additional c. 11.7 million km2 of exploratory range and 1.2 million km2 of possible resident range. Collectively these areas overlap with 36 modern countries. Significant human disruption of the species' habitat seems to have begun over 6000 years ago in some areas, but in other regions has yet to materialise. In few arid ecoregions, human activities appear to have modestly increased habitat availability in the past, yet overall tigers have lost between 90% and 95% of their indigenous range over the last 8500 years.

Main Conclusions

We define the ‘indigenous range’ of a species, develop a replicable biogeographical procedure, apply the procedure to the tiger and discuss transferability to other species.

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来源期刊
Diversity and Distributions
Diversity and Distributions 环境科学-生态学
CiteScore
8.90
自引率
4.30%
发文量
195
审稿时长
8-16 weeks
期刊介绍: Diversity and Distributions is a journal of conservation biogeography. We publish papers that deal with the application of biogeographical principles, theories, and analyses (being those concerned with the distributional dynamics of taxa and assemblages) to problems concerning the conservation of biodiversity. We no longer consider papers the sole aim of which is to describe or analyze patterns of biodiversity or to elucidate processes that generate biodiversity.
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