Significance of Forest Fragments for Conservation of Endangered Vascular Plant Species in Southern Brazil Hotspots

IF 1.3 4区环境科学与生态学 Q3 ECOLOGY

Ecoscience Pub Date : 2019-04-27 DOI:10.1080/11956860.2019.1598644

Leonardo da Silva Tomadon, G. A. Dettke, M. G. Caxambu, I. J. M. Ferreira, E. V. Couto

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引用次数: 14

Abstract

ABSTRACT The Brazilian Atlantic Forest and Brazilian Savanna (i.e., Cerrado) are classified as World Biodiversity Hotspots. Our goal was to analyze the spatial distribution of endangered species in both habitats within the Mourão River basin, southern Brazil. Forest remnants were mapped using Landsat 8 satellite images applying NDVI medium and landscape metrics. Locations of endangered species were added as an additional layer. The result was a map of 4015 forest remnants of which 97.66% were smaller than 50 ha, and 2.34% were larger than 50 ha. A total of 41 species was recorded in the Atlantic Forest fragments of the basin (total area: 25 502.6 ha), and 32 species in the Brazilian Savanna (total area: 8.6 ha). The forest fragment with the greatest richness of endangered species was Lago Azul State Park with 29 species endangered at the state level and six at the national level. The second and third most species-rich fragments corresponded to Brazilian Savanna fragments: Cerrado Ecological Station and Lote 7H. The integration of GIS, landscape metrics and spatial distribution of endangered species is an important tool for the identification of priority areas for biodiversity conservation.

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巴西南部热点地区森林碎片对濒危维管植物物种保护的意义

巴西大西洋森林和巴西热带稀树草原(即塞拉多)被列为世界生物多样性热点地区。我们的目标是分析巴西南部mour河流域两个栖息地中濒危物种的空间分布。利用Landsat 8卫星图像，应用NDVI介质和景观指标绘制森林遗迹图。作为额外的一层，增加了濒危物种的位置。结果得到4015片森林残余物，其中小于50 ha的占97.66%，大于50 ha的占2.34%。盆地大西洋森林片段共记录41种(总面积25 502.6 ha)，巴西热带稀树草原共记录32种(总面积8.6 ha)。濒危物种最丰富的森林片段是蓝湖州立公园，共有29种国家级濒危物种和6种国家级濒危物种。第二和第三多物种丰富的片段对应于巴西稀树草原片段:Cerrado生态站和Lote 7H。将地理信息系统、景观度量和濒危物种空间分布相结合，是确定生物多样性保护重点区域的重要工具。

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来源期刊

Ecoscience 环境科学-生态学

CiteScore

2.80

自引率

0.00%

发文量

审稿时长

>36 weeks

期刊介绍： Écoscience, is a multidisciplinary journal that covers all aspects of ecology. The journal welcomes submissions in English or French and publishes original work focusing on patterns and processes at various temporal and spatial scales across different levels of biological organization. Articles include original research, brief communications and reviews.