Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/ele.12807 |
Carrying capacity in a heterogeneous environment with habitat connectivity | |
Zhang, Bo1; Kula, Alex1; Mack, Keenan M. L.2; Zhai, Lu1,3; Ryce, Arrix L.1; Ni, Wei-Ming4,5; DeAngelis, Donald L.6; Van Dyken, J. David1 | |
2017-09-01 | |
发表期刊 | ECOLOGY LETTERS
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ISSN | 1461-023X |
EISSN | 1461-0248 |
出版年 | 2017 |
卷号 | 20期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Peoples R China |
英文摘要 | A large body of theory predicts that populations diffusing in heterogeneous environments reach higher total size than if non-diffusing, and, paradoxically, higher size than in a corresponding homogeneous environment. However, this theory and its assumptions have not been rigorously tested. Here, we extended previous theory to include exploitable resources, proving qualitatively novel results, which we tested experimentally using spatially diffusing laboratory populations of yeast. Consistent with previous theory, we predicted and experimentally observed that spatial diffusion increased total equilibrium population abundance in heterogeneous environments, with the effect size depending on the relationship between r and K. Refuting previous theory, however, we discovered that homogeneously distributed resources support higher total carrying capacity than heterogeneously distributed resources, even with species diffusion. Our results provide rigorous experimental tests of new and old theory, demonstrating how the traditional notion of carrying capacity is ambiguous for populations diffusing in spatially heterogeneous environments. |
英文关键词 | Carrying capacity consumer-resource model dispersal experiment environmental stressor heterogeneous resource distribution r-K relationship spatially distributed population |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000407391900003 |
WOS关键词 | SPATIAL HETEROGENEITY ; FRAGMENTATION ; BIODIVERSITY ; POPULATION ; DISPERSAL ; RATES ; GROWTH ; MODELS ; SINGLE |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/31507 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Miami, Dept Biol, Coral Gables, FL 33124 USA; 2.Illinois Coll, Dept Biol, Jacksonville, IL USA; 3.Univ Miami, Dept Math, Coral Gables, FL 33124 USA; 4.Univ Minnesota, Sch Math, Minneapolis, MN 55455 USA; 5.East China Normal Univ, Ctr Partial Differential Equat, Putuo Qu, Shanghai Shi, Peoples R China; 6.US Geol Survey, Wetland & Aquat Res Ctr, Gainesville, FL USA |
推荐引用方式 GB/T 7714 | Zhang, Bo,Kula, Alex,Mack, Keenan M. L.,et al. Carrying capacity in a heterogeneous environment with habitat connectivity[J]. ECOLOGY LETTERS,2017,20(9). |
APA | Zhang, Bo.,Kula, Alex.,Mack, Keenan M. L..,Zhai, Lu.,Ryce, Arrix L..,...&Van Dyken, J. David.(2017).Carrying capacity in a heterogeneous environment with habitat connectivity.ECOLOGY LETTERS,20(9). |
MLA | Zhang, Bo,et al."Carrying capacity in a heterogeneous environment with habitat connectivity".ECOLOGY LETTERS 20.9(2017). |
条目包含的文件 | 条目无相关文件。 |
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