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Restricted breeding habitat of the Critically Endangered White-winged Flufftail in Ethiopia and its conservation implications

机译：埃塞俄比亚批判性白翅绒毛桩的限制育种栖息地及其保护意义

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摘要

The White-winged FlufftailSarothrura ayresiis considered the most threatened rallid species in Africa and has significant data deficiencies related to population dynamics, ecology and conservation priorities. The Ethiopian Highlands have until recently, been the only known breeding area for this species globally and are being significantly transformed as a result of expanding agricultural activities. Our study aimed to use in situ data collection and spatially explicit modelling, supported with remote sensing, to produce the first quantified estimate of breeding habitat availability and population size for this species in the Ethiopian Highlands. Our results confirm that a significant proportion (c. 95%) of the three wetland catchments known to support the species have been transformed and are no longer suitable. We estimate that given the remaining habitat (c. 232 ha) and recorded nest density (0.24 nests ha(-1)), the three catchments could support a potential breeding population of 55 pairs. Of the three catchments, Upper Berga was highlighted as a conservation priority for securing the largest intact sections of suitable breeding habitat. The accumulative impact of a small and declining population size, restricted and localised geographic range and a high rate of habitat loss, all contribute to White-winged Flufftail being associated with a very high extinction risk.
机译：白翅绒花芽孢子罗拉·艾尔萨里斯认为，非洲中最受威胁的Rallid物种，与人口动态，生态和保护优先事项有关的重要数据缺陷。埃塞俄比亚高地迄今为止，一直是全球该物种的唯一已知的繁殖区，并且由于扩大农业活动而被显着变革。我们的研究旨在使用遥感的原位数据收集和空间显式建模，为埃塞俄比亚高地的这种物种产生育种栖息地可用性和人口大小的第一次量化估计。我们的结果证实，已知一种支持该物种已知的三个湿地集水区的大量比例（C.95％）已经转化，并且不再适合。我们估计，给出了剩余的栖息地（C.232公顷）和记录的巢密度（0.24巢HA（-1）），三个集水区可以支持55对潜在的育种人群。在三个集水区中，上层贝格被强调为保护合适的育种栖息地的最大完整部分的保护优先权。人口规模，限制和局部地理范围的累计影响以及栖息地损失的高率，都有助于与非常高的灭绝风险相关的白翼绒毛。

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