被忽视的热带草原:巴西圣保罗州campo com murundus及其植物群落的首次记录

IF 1 4区 环境科学与生态学 Q3 BIODIVERSITY CONSERVATION
B. H. Campos, N. A. Pilon, L. Gonçalves, N. Ivanauskas, G. Durigan
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引用次数: 0

摘要

热带草原在世界范围内的地图、保护政策和生态学研究中一直被系统地忽视。最近的卫星图像显示,在巴西东南部塞拉多保护区根除入侵的松树后,一个前所未有的草地生态系统出现了。在田野调查中,我们首次确认了在圣保罗州,在南纬21°以上发现有白蚁丘的湿润草原。除了报道这一事件外,我们还对形成这种特殊植被类型的两个植物群落(土丘和周围的浸水基质)进行了采样,以调查它们在区系和功能上是否不同。我们还探讨了这两个群落与周围开放植被类型(稀树草原、干草地和湿草地)的关系。土丘上有木本植物记录,基质中没有记录,但两个群落有一些共同的地面物种。与邻近植被类型相比,土丘在植物区系上具有明显的差异性,在生长形式、扩散综合征和耐涝能力等方面具有较好的功能平衡。我们希望这一边缘记录可以激发人们在已知的栖息地之外寻找其他未被注意到的遗迹,从而引发对这些标志性生态系统的保护和研究,以提高对这些生态系统的理解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
The neglected tropical grasslands: first record of campo com murundus and its plant communities in the state of São Paulo, Brazil
Abstract Tropical grasslands have been systematically neglected worldwide in maps, conservation policies, and ecological studies. After eradicating invasive pine trees from a Cerrado reserve in southeastern Brazil, an unprecedented grassy ecosystem arose in recent satellite images. In the field, we confirmed the first record of wet grasslands with termite mounds – locally named campo com murundus ˗ beyond 21°S in the São Paulo state. Besides reporting this occurrence, we sampled the two plant communities forming this peculiar vegetation type (the mounds and the waterlogged matrix around them) to investigate if they are floristically and functionally distinct. We also explored how these two communities relate to those of the surrounding open vegetation types (savanna, dry and wet grassland). Woody plants were recorded on the mounds but not in the matrix, although the two communities share some ground layer species. Compared to the adjacent vegetation types, the mounds were floristically distinct and functionally more balanced in growth forms, dispersal syndrome, and tolerance to waterlogging. We hope this borderline record of campo com murundus can stimulate the search for other unnoticed remnants out of their known occurrence region, triggering efforts for their conservation and studies to improve comprehension of these iconic ecosystems.
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来源期刊
Biota Neotropica
Biota Neotropica BIODIVERSITY CONSERVATION-
CiteScore
2.90
自引率
16.70%
发文量
0
审稿时长
4-8 weeks
期刊介绍: BIOTA NEOTROPICA is an electronic, peer-reviewed journal edited by the Program BIOTA/FAPESP: The Virtual Institute of Biodiversity. This journal"s aim is to disseminate the results of original research work, associated or not to the program, concerned with characterization, conservation and sustainable use of biodiversity within the Neotropical region. Manuscripts are considered on the understanding that their content has not appeared, or will not be submitted, elsewhere in substantially the same form, because once published their copyrights are transferred to BIOTA NEOTROPICA as established in the Copyright Transfer Agreement signed by the author(s).
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