| Effects of Vegetation Cover, Presence of a Native Ant Species, and Human Disturbance on Colonization by Argentine Ants. | |
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MedLine Citation:
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PMID: 22533673 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The spread of non-native invasive species is affected by human activity, vegetation cover, weather, and interaction with native species. We analyzed data from a 17-year study of the distribution of the non-native Argentine ant (Linepithema humile) and the native winter ant (Prenolepis imparis) in a preserve in northern California (U.S.A.). We conducted logistic regressions and used model selection to determine whether the following variables were associated with changes in the distribution of each species: presence of conspecifics at neighboring sites, distance to development (e.g., roads, buildings, and landscaped areas), proportion of vegetation cover taller than 0.75 m, elevation, distance to water, presence of both species at a site, temperature, and rainfall. Argentine ants colonized unoccupied sites from neighboring sites, but the probability of appearance and persistence decreased as distance to development, vegetation cover, and elevation increased. Winter ants appeared and persisted in sites with relatively high vegetation cover (i.e., highly shaded sites). Presence of the 2 species was negatively associated in sites with high vegetation cover (more winter ants) and sites near development (more Argentine ants). Probability of colonization of Argentine ants decreased where winter ants were most persistent. At sites near development within the preserve, abundant Argentine ant populations may be excluding winter ants. The high abundance of Argentine ants at these sites may be due to immigration from suburban areas outside the preserve, which are high-quality habitat for Argentine ants. In the interior of the preserve, distance from development, low-quality habitat, and interaction with winter ants may in combination exclude Argentine ants. Interactions among the variables we examined were associated with low probabilities of Argentine ant colonization in the preserve. |
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Authors:
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Katherine Fitzgerald; Deborah M Gordon |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-4-25 |
Journal Detail:
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Title: Conservation biology : the journal of the Society for Conservation Biology Volume: - ISSN: 1523-1739 ISO Abbreviation: - Publication Date: 2012 Apr |
Date Detail:
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Created Date: 2012-4-26 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9882301 Medline TA: Conserv Biol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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©2012 Society for Conservation Biology. |
Affiliation:
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Department of Biology, Stanford University, 371 Serra Mall, Stanford, CA 94305-5020, U.S.A. |
Vernacular Title:
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Efectos de la Cobertura Vegetal, Presencia de Especies de Hormigas Nativas y Perturbación Humana sobre la Colonización por Hormigas Argentinas. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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