Connecting landscape patterns to ecosystem and population processes

Kareiva, Peter; Wennergren, Uno

doi:10.1038/373299a0

Cited by 527 publications

(325 citation statements)

References 22 publications

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“…This problem was tackled by using the simple Levins model (see Eq. (2)) in many previous studies (May, 1991;Nee and May, 1992;Lawton et al, 1994;Moilanen and Hanski, 1995;Kareiva and Wennergren 1995). It turned out that the metapopulation is doomed to extinction for values of h smaller than e/c (see again Eq.…”

Section: The Random Loss Of Habitat Patchesmentioning

confidence: 98%

“…In fact, the occurrence of random catastrophes-such as local epidemics or abrupt abiotic changes-and the habitat destruction induced by man activities considerably increase the extinction risk of populations living in fragmented habitats. Several modeling approaches have been adopted to describe and analyze the effect of disturbances on metapopulations (Lande, 1987;Fahrig, 1992;Gyllenberg and Hanski, 1992;Adler and Nü ernberger, 1994;Olivieri et al, 1995;Kareiva and Wennergren, 1995;Bascompte and Solé, 1996;Fahrig, 1997;Hill and Caswell, 1999;Gyllenberg and Hanski, 1997;Hanski and Ovaskainen, 2000). Unfortunately, the comparison between the effects induced by environmental disasters and those caused by habitat destruction has been rarely done (Lande, 1993): studies analyzing the consequences of the first source of risk usually neglect the latter, while other studies consider the latter risk only (but see the simulation model by Fahrig, 1998, as a good exception).…”

Section: Introductionmentioning

confidence: 99%

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Habitat Destruction, Environmental Catastrophes, and Metapopulation Extinction

Casagrandi¹,

Gatto²

2002

Theoretical Population Biology

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Section: The Random Loss Of Habitat Patchesmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Habitat Destruction, Environmental Catastrophes, and Metapopulation Extinction

Casagrandi¹,

Gatto²

2002

Theoretical Population Biology

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“…Previous multispecies models of habitat fragmentation have assumed the presence of a hierarchical organization of competitive interactions. The best known example is Tilman's model, defined as (Tilman, 1994;Tilman et al, 1994;Tilman and Kareiva, 1997;Kareiva and Wennengren, 1995): …”

Section: Introductionmentioning

confidence: 99%

Habitat fragmentation and biodiversity collapse in neutral communities

Solé

Alonso

Saldaña

2004

Ecological Complexity

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Models of habitat fragmentation have mainly explored the effects on a few-species ecologies or on a hierarchical community of competitors. These models reveal that, under different conditions, ecosystem response can involve sharp changes when some given thresholds are reached. However, perturbations, recruitment limitation and other causes may prevent competitive hierarchies from actually operating in natural conditions: the process of competitive exclusion underlying hierarchies could not be a determinant factor structuring communities. Here we explore both spatially-implicit and spatially-explicit metapopulation models for a competitive community, where the colonization-extinction dynamics takes place through neutral interactions. Here species interactions are not hierarchical at all but are somehow ecologically equivalent and just compete for space and resources through recruitment limitation. Our analysis shows the existence of a common destruction threshold for all species: whenever habitat loss reaches certain value a sudden biodiversity collapse takes place. Furthermore, the model is able to reproduce species-rank distributions and its spatially explicit counterpart predicts also species-area laws obtained from recent studies on rainforest plots. It is also discussed the relevance of percolation thresholds in limiting diversity once the landscape is broken into many patches.

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“…Previous research shows not only local factors influence local diversity and abundance, but landscape factors can also have a large impact on organisms (Kareiva and Wennergren 1995, Duelli and Obrist 2003, Clough et al 2005. Interactions between local and landscape conservation strategies are important but can affect different taxonomic groups in different ways, implying that other mechanisms such as dispersal ability, range size, or response to disturbance are also important , Batáry et al 2012, Gonthier et al 2014.…”

mentioning

confidence: 99%