TITLE

Biotic Globalization: Does Competition from Introduced Species threaten Biodiversity?

AUTHOR(S)
Davis, Mark A.
PUB. DATE
May 2003
SOURCE
BioScience;May2003, Vol. 53 Issue 5, p481
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The introduction of new predators and pathogens has caused numerous well-documented extinctions of long-term resident species, particularly in spatially restricted environments such as islands and lakes. However, there are surprisingly few instances in which extinctions of resident species can be attributed to competition from new species. This suggests either that competition-driven extinctions take longer to occur than those caused by predation or that biological invasions are much more likely to threaten species through intertrophic than through intratrophic interactions. The likely threat of introduced species to resident centrophics (species in the same trophic level) can be assessed with the help of existing biodiversity and extinction data sets and of two recent theories: (1) the fluctuating resource availability hypothesis, developed to account for changes in the invasibility of communities, and (2) the unified neutral theory, proposed to account for patterns of biodiversity at the community and metacommunity levels. Taken together, theory and data suggest that, compared to intertrophic interactions and habitat loss, competition from introduced species is not likely to be a common cause of extinctions of long-term resident species at global, metacommunity, and even most community levels.
ACCESSION #
9772186

 

Related Articles

  • Defining Parasite Communities Is a Challenge for Neutral Theory. Dove, Alistair D. M. // Journal of Parasitology;Jun2006, Vol. 92 Issue 3, p673 

    The article studies the application of neutral theory as a null model for parasite communities. The neutral theory of biodiversity and biogeography is a null model of community structure that suggests that it may be possible to explain the richness and relative abundance of species through...

  • Whether the Weather Drives Patterns of Endemic Amphibian Chytridiomycosis: A Pathogen Proliferation Approach. Murray, Kris A.; Skerratt, Lee F.; Garland, Stephen; Kriticos, Darren; McCallum, Hamish // PLoS ONE;Apr2013, Vol. 8 Issue 4, p1 

    The pandemic amphibian disease chytridiomycosis often exhibits strong seasonality in both prevalence and disease-associated mortality once it becomes endemic. One hypothesis that could explain this temporal pattern is that simple weather-driven pathogen proliferation (population growth) is a...

  • Assessing patterns of nestedness in stream insect assemblages along environmental gradients. Heino, Jani; Mykr√§, Heikki; Rintala, Jaana // Ecoscience (Ecoscience);2010, Vol. 17 Issue 4, p345 

    Nestedness is a widely studied pattern in ecology and biogeography. Nestedness has been termed perfect when sites harbouring low-diversity assemblages contain subsets of species in progressively more diverse assemblages. Nestedness has been studied in various regional and environmental contexts,...

  • Predicting biodiversity change and averting collapse in agricultural landscapes. Mendenhall, Chase D.; Karp, Daniel S.; Meyer, Christoph F. J.; Hadly, Elizabeth A.; Daily, Gretchen C. // Nature;5/8/2014, Vol. 509 Issue 7499, p213 

    The equilibrium theory of island biogeography is the basis for estimating extinction rates and a pillar of conservation science. The default strategy for conserving biodiversity is the designation of nature reserves, treated as islands in an inhospitable sea of human activity. Despite the...

  • Archaeological Paleobiogeography in the Russian Far East:The Kuril Islands and Sakhalin in Comparative Perspective. Fitzhigh, Ben; Moore, Scotty; Lockwood, Chris; Boone, Cristie // Asian Perspectives: Journal of Archeology for Asia & the Pacific;Spring2004, Vol. 43 Issue 1, p92 

    Presents a biogeographical analyses of lithic artifacts and archeofauna from the Kuril Island chain and southern Sakhalin Island in the Sea of Okhotsk. Utility of the theory of island biogeography in the systematic comparison of island-based archaeological assemblages; Dynamics of insular...

  • Ecosystem consequences of changing biodiversity. Chapin III, F. Stuart; Sala, Osvaldo E. // BioScience;Jan1998, Vol. 48 Issue 1, p45 

    Presents research which studied the global extent of the environmental impacts of human activities during the current, biotically-driven extinction event. Causes of earlier extinction events; Current extinction rates; Impact on species of human activity; Predicting consequences of global...

  • Diversity dearth. Parr, Jan // Vegetarian Times;Feb94, Issue 198, p14 

    Discusses various aspects of biodiversity loss. Extinction of plant and animal species; Threat to ecological functions; Assessment of attitudes about biodiversity.

  • Evolutionary speed limits inferred from the fossil record. Kirchner, James W. // Nature;1/3/2002, Vol. 415 Issue 6867, p65 

    Investigates the dynamics of extinction and biological diversification across different timescales. Fluctuation of fossil extinction and origination rates; Description of the biodiversity consequences; Use of spectral analysis in testing the effect of diversification rates on the extinction rates.

  • Life's downs and ups. Erwin, Douglas // Nature;3/9/2000, Vol. 404 Issue 6774, p129 

    Deals with recoveries in biodiversity following mass extinctions. Influence of equilibria-based models derived from island biogeography; Dynamics of post-extinction; Cross-correlation between peaks of extinction and origination. INSET: Defining recoveries in biodiversity..

Share

Read the Article

Courtesy of NEW JERSEY STATE LIBRARY

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics