亚马逊两动物:多样性,空间分布模式,保护和采样缺陷
Marcos Penhacek1,2, Thadeu Sobral Souza3, Jessie Pereira Santos4
1Programa de Pós-Graduação em Ecologia e Conservação da Biodiversidade, Universidade Federal do Mato Grosso, Rua Fernando Corrêa da Costa 2367, 78060-900, Cuiabá, Brazil Programa de Pós-Graduação em Ecologia e Conservação da Biodiversidade, Universidade Federal do Mato Grosso, Rua Fernando Corrêa da Costa 2367, 78060-900 Cuiabá Brazil.
Biodiversity data journal
|October 15, 2024
概括
亚马逊两动物表现出独特的多样性模式,受河流系统的影响,秘鲁,巴西和厄瓜多尔的丰富性值得注意. 保护工作至关重要,因为18%的物种面临灭绝的风险.
科学领域:
- 生物多样性研究的研究.
- 类学 类学 类学 类学
- 保护科学 保护科学
背景情况:
- 亚马逊生物群,地球上最大的热带森林,拥有无与伦比的生物多样性.
- 两动物,尽管它们在生态上很重要,但在亚马逊地区的物种丰富性和分布方面没有得到充分的研究.
- 关于亚马逊两动物的现有数据是分散的,阻碍了全面的保护战略.
研究的目的:
- 通过亚马逊的地缘政治和生物地理划分来调查两动物物种丰富性和特有性模式.
- 评估亚马逊生物区域之间的相似性和差异,并分析两动物采样中的时间趋势.
- 评估亚马逊两动物的保护状况,并强调各种数据源对于强大的数据库的重要性.
主要方法:
- 来自公共平台,同行评审文章,灰色文献和15年 (2007-2021) 的现场工作的综合数据.
- 在7,418个地点编制了947种两动物的160,643个发生记录.
- 进行了物种多样性的地理分析,考虑了主要河流定义的度和纵度梯度.
主要成果:
- 在秘鲁,巴西和厄瓜多尔发现了最高的物种多样性和特有性,特别是在西部盆地和塔帕戈斯河盆地.
- 揭示了亚马逊河及其支流 (朱鲁亚,马德拉,塔帕乔斯) 形成的四个不同的物种多样性群体,区域间相似性低 (<40%).
- 记录了自20世纪50年代以来加强的两动物采样,发现大约18%的物种面临灭绝的风险 (IUCN评估).
结论:
- 由于生物地理历史,河流系统显著影响亚马逊两动物物种组成.
- 强大的分类学和空间数据库对于理解和保护亚马逊两动物至关重要.
- 这项研究提供了有价值的大型数据集,以指导这些物种的未来研究和保护计划.
相关概念视频
Habitat Fragmentation
17.4K
Habitat fragmentation describes the division of a more extensive, continuous habitat into smaller, discontinuous areas. Human activities such as land conversion, as well as slower geological processes leading to changes in the physical environment, are the two leading causes of habitat fragmentation. The fragmentation process typically follows the same steps: perforation, dissection, fragmentation, shrinkage, and attrition.
17.4K
What is Biodiversity?
27.2K
Biodiversity describes the variety of living things at multiple organizational levels: genetic, species and ecosystem diversity. Species diversity includes all branches of the evolutionary tree from single-celled prokaryotic organisms, bacteria, and archaea, to the eukaryotic kingdoms: plants; animals; fungi; and protists. To date, there have been about 1.75 million species identified, and new species are discovered every week.
27.2K
Conservation of Small Populations
13.1K
Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
13.1K
Distribution and Dispersion
21.6K
To understand intra-specific interactions in populations, scientists measure the spatial arrangement of species individuals. This geographic arrangement is known as the species distribution or dispersion. Highly territorial species exhibit a uniform distribution pattern, in which individuals are spaced at relatively equal distances from one another. Species that are highly tied to particular resources, such as food or shelter, tend to concentrate around those resources, and thus exhibit a...
21.6K
Hybrid Zones
16.9K
Hybrid zones are narrow regions where two closely related species interact, mate, and produce hybrids. Relative to either parent species, hybrids may possess distinct phenotypic or genetic differences that impact their survival and reproductive success. The genetic variances introduced by hybridization influence species diversity and speciation processes within the hybrid zone.
16.9K
Diversity of Protists IV
1
Amoebozoa represent a diverse group of terrestrial and aquatic protists that utilize lobe-shaped pseudopodia for locomotion and feeding. This characteristic differentiates them from the Rhizaria, which possess threadlike pseudopodia. The primary classifications within Amoebozoa include gymnamoebas, entamoebas, and the plasmodial and cellular slime molds. Phylogenetic evidence indicates that Amoebozoa diverged from a lineage that ultimately gave rise to fungi and animals.Gymnamoebas and...
1


