Knowledge Resource Center for Ecological Environment in Arid Area
| Habitat contributions to biodiversity trends at a subcontinental extent | |
| Napoletano, Brian M. | |
| 出版年 | 2011 |
| 学位类型 | 博士 |
| 导师 | Pijanowski, Bryan C. |
| 学位授予单位 | Purdue University |
| 英文摘要 | The extent to which humanity's metabolism of natural resources has impacted the biosphere is significant. After discussing the global state of biodiversity, I use the 1992 National Land Cover Dataset and the North American Breeding Bird Survey to examine how avian species richness responds to habitat-level factors across the conterminous United States, and find a significant relationship between land-cover and species richness. I then use BBS data to examine whether species richness changes over time by examining trends in species richness on 554 routes surveyed continuously between 1990 and 2006. A linear regression analysis indicates a slight increase in species richness over this interval, but the spatial and frequency distributions of this change suggest the possibility that species richness attains a level of dynamic equilibrium in the absence of human disturbances. These two studies reinforce the need for integrative approaches to the measurement of multiple dimensions of biodiversity simultaneously, leading to a discussion of the role that the biophony, as a measure of biotic activity in the soundscape, could play as a multidimensional measure of biodiversity. In addition to facilitating transitions across spatial and temporal scales in biodiversity studies, the biophony of different habitats may offer unique information about the physiology, intraspecific communication, interspecific interactions, and responses of groups of organisms to anthropogenic disturbances. This information could foster a deeper understanding of the spatio-temporal dynamics of biodiversity, and could facilitate a perceptual shift that re-couples human and biophysical systems. |
| 英文关键词 | Biodiversity Biogeography Birds Habitat complexity North America Species richness |
| 语种 | 英语 |
| 国家 | United States |
| 来源学科分类 | Ecology; Geographic information science; Conservation |
| URL | https://pqdtopen.proquest.com/doc/901124363.html?FMT=AI |
| 来源机构 | Purdue University |
| 资源类型 | 学位论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/245420 |
| 推荐引用方式 GB/T 7714 | Napoletano, Brian M.. Habitat contributions to biodiversity trends at a subcontinental extent[D]. Purdue University,2011. |
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