当前位置: X-MOL 学术Mamm. Biol. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Analysis of the remaining habitat of an endemic species rediscovered
Mammalian Biology ( IF 1.9 ) Pub Date : 2020-04-23 , DOI: 10.1007/s42991-020-00023-z
Leticia Cab-Sulub , Sergio Ticul Álvarez-Castañeda

Dipodomys gravipes is distributed only in the San Quintin plains, in the northwest of the peninsula of Baja California, México; this species is known to prefer flat areas and undisturbed sites. The San Quintin region has experienced accelerated agricultural development over the past 20 years, diminishing the populations of D. gravipes , which is listed as possibly extinct in its environment. In 2017, specimens from two sites were found after a 32-year lack of records. The aim of this work was to identity sites with habitat suitability where D. gravipes could be found, and conduct fieldwork to search for the D. gravipes in the sites with high suitability. The selection of sites was based on ecological niche models. We conducted a reclassification to obtain a “habitat suitability map”. In this map, we selected 30 sites to be surveyed in the field in search of D. gravipes using Sherman traps. A field surveys was conducted in October 2017. Sampling was not successful for D. gravipes . Following the results of the analyses, conditions with flat areas and undisturbed sites only occur in 1.6% of the historical distribution (37.3 km 2 ). On the other hand, although no specimens of D. gravipes were found, the sites derived from the methodology developed in this work set the basis for future searches or to select areas where this species can be reintroduced if rediscovered. It is necessary and urgent to know the sites and conditions in which D. gravipes is present to support any proposal for its conservation.

中文翻译:

重新发现的特有物种的剩余栖息地分析

Dipodomys gravipes 仅分布于墨西哥下加利福尼亚半岛西北部的圣昆廷平原;众所周知,这个物种更喜欢平坦的地区和不受干扰的地方。圣昆廷地区在过去的 20 年里经历了加速的农业发展,减少了 D. gravipes 的数量,该地区被列为可能在其环境中灭绝。2017 年,在缺乏记录 32 年后发现了来自两个地点的标本。这项工作的目的是确定可以发现 D. gravipes 的具有栖息地适宜性的地点,并进行实地调查以在具有高适宜性的地点寻找 D. gravipes。地点的选择基于生态位模型。我们进行了重新分类以获得“栖息地适宜性图”。在这张地图中,我们选择了 30 个地点进行实地调查,以使用谢尔曼陷阱寻找 D. gravipes。2017 年 10 月进行了实地调查。 D. gravipes 的采样不成功。根据分析结果,平坦地区和未受干扰地点的条件仅出现在历史分布(37.3 km 2 )的 1.6% 中。另一方面,虽然没有发现 D. gravipes 的标本,但从这项工作中开发的方法中得出的地点为未来的搜索或选择重新发现该物种后可以重新引入的区域奠定了基础。了解 D. gravipes 存在的地点和条件以支持其保护提案是必要且紧迫的。根据分析结果,平坦地区和未受干扰地点的条件仅出现在历史分布(37.3 km 2 )的 1.6% 中。另一方面,虽然没有发现 D. gravipes 的标本,但从这项工作中开发的方法中得出的地点为未来的搜索或选择重新发现该物种后可以重新引入的区域奠定了基础。了解 D. gravipes 存在的地点和条件以支持其保护提案是必要且紧迫的。根据分析结果,平坦地区和未受干扰地点的条件仅出现在历史分布(37.3 km 2 )的 1.6% 中。另一方面,虽然没有发现 D. gravipes 的标本,但从这项工作中开发的方法中得出的地点为未来的搜索或选择重新发现该物种后可以重新引入的区域奠定了基础。了解 D. gravipes 存在的地点和条件以支持其保护提案是必要且紧迫的。从这项工作中开发的方法中得出的地点为未来的搜索或选择重新发现该物种后可以重新引入的区域奠定了基础。了解 D. gravipes 存在的地点和条件以支持其保护提案是必要且紧迫的。从这项工作中开发的方法中得出的地点为未来的搜索或选择重新发现该物种后可以重新引入的区域奠定了基础。了解 D. gravipes 存在的地点和条件以支持其保护提案是必要且紧迫的。
更新日期:2020-04-23
down
wechat
bug