Countryside Biogeography of Moths in a Fragmented Landscape: Biodiversity in Native and Agricultural Habitats

Ricketts, Taylor H.; Daily, Gretchen C.; Ehrlich, Paul R.; Fay, John P.

doi:10.1046/j.1523-1739.2001.015002378.x

Cited by 291 publications

(272 citation statements)

References 45 publications

(42 reference statements)

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“…This result is important because it may improve our ability to predict future density changes to fragmentation through inclusion of species characteristics such as wing span. Third, the DAR slope for habitat specialists was largely positive whereas the slope for habitat generalists and matrix specialists was negative, which is consistent with community-level studies suggesting that small patches have a community composition resembling the matrix (8,32). This pattern seemingly occurs for different reasons in moths and butterflies.…”

Section: Discussionsupporting

confidence: 83%

Habitat specialization, body size, and family identity explain lepidopteran density–area relationships in a cross-continental comparison

Hambäck

Summerville

Steffan‐Dewenter

et al. 2007

Proc. Natl. Acad. Sci. U.S.A.

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Habitat fragmentation may strongly affect species density, species interactions, and the rate of ecosystem processes. It is therefore important to understand the observed variability among species responses to fragmentation and the underlying mechanisms. In this study, we compare density-area relationships (DARs) for 344 lepidopteran species belonging to 22 families (butterflies and moths). This analysis suggested that the DAR slope is generally positive for moths and negative for butterflies. The differences are suggested to occur because moths are largely olfactory searchers, whereas most butterflies are visual searchers. The analysis also suggests that DARs vary as a function of habitat specialization and body size. In butterflies, generalist species had a more negative DAR slope than specialist species because of a lower patch size threshold. In moths, the differences in DARslope between forest and open habitat species were large for small species but absent for large species. This difference is argued to occur because the DAR slope in large species mainly reflects their search mode, which does not necessarily vary between moth groups, whereas the slope in small species reflects population growth rates.butterflies and moths ͉ habitat fragmentation ͉ Lepidoptera ͉ life history traits ͉ olfactory and visual information

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Section: Discussionsupporting

confidence: 83%

Habitat specialization, body size, and family identity explain lepidopteran density–area relationships in a cross-continental comparison

Hambäck

Summerville

Steffan‐Dewenter

et al. 2007

Proc. Natl. Acad. Sci. U.S.A.

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“…This requires an expansion beyond habitat management at the field level to incorporate larger landscape patterns and processes, a still relatively unexplored area. In addition to the size and distance between habitat patches, we are beginning to realize the importance of the 'matrix' between patches for insect movement (Ricketts et al 2001). Many species that live in habitat patches also utilize resources outside the habitat patch, a desirable attribute for biological control since we want natural enemies to migrate into agricultural fields.…”

Section: Biotic Interactions In Agroecosystems C Shennan 727mentioning

confidence: 99%

Biotic interactions, ecological knowledge and agriculture

Shennan

2007

Phil. Trans. R. Soc. B

179

126

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This paper discusses biotic interactions in agroecosystems and how they may be manipulated to support crop productivity and environmental health by provision of ecosystem services such as weed, pest and disease management, nutrient cycling and biodiversity conservation. Important elements for understanding biotic interactions include consideration of the effects of diversity, species composition and food web structure on ecosystem processes; the impacts of timing, frequency and intensity of disturbance; and the importance of multitrophic interactions. All of these elements need to be considered at multiple scales that depend in part on the range of the movement of the organisms involved. These issues are first discussed in general, followed by an examination of the application of these concepts in agricultural management. The potential for a greater use of ecological management approaches is high; however, owing to the nature of complex interactions in ecosystems, there is some inherent unpredictability about responses to management interventions under different conditions. Such uncertainty needs to be accommodated in the development of recommendations for farm management. This requires an increased emphasis on the effective synthesis of complex and often apparently contradictory information and on field-based adaptive research, monitoring and social learning by farmer/researcher collaborations.

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“…Various environmental variables may influence species richness and abundance of insects (Ricketts et al 2001). Confounding factors were minimized in the Swiss and French samples by selecting paired sites with similar characteristics.…”

Section: Confounding Environmental Variablesmentioning

confidence: 99%

Species richness and abundance of native leaf miners are affected by the presence of the invasive horse-chestnut leaf miner

et al. 2009

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The effect of the alien horse-chestnut leaf miner, Cameraria ohridella, on native fauna was studied by comparing the species richness of native leaf miner communities and the abundance of selected native leaf miner species in the presence and absence of horse-chestnut trees infested by C. ohridella, in various environments in Europe. The species richness of native leaf miner communities in Switzerland was lower at sites where C. ohridella was present than at control sites. In Switzerland, France and Bulgaria, several native leaf miner species were significantly less abundant in the vicinity of infested horse-chestnuts. The native species most affected by the presence of the invasive alien species were those occurring early in the year and sharing their parasitoid complex with C. ohridella. These results suggest apparent competition mediated by shared natural enemies because these are the only link between C. ohridella and native leaf miners using other food resources.

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Countryside Biogeography of Moths in a Fragmented Landscape: Biodiversity in Native and Agricultural Habitats

Cited by 291 publications

References 45 publications

Habitat specialization, body size, and family identity explain lepidopteran density–area relationships in a cross-continental comparison

Habitat specialization, body size, and family identity explain lepidopteran density–area relationships in a cross-continental comparison

Biotic interactions, ecological knowledge and agriculture

Species richness and abundance of native leaf miners are affected by the presence of the invasive horse-chestnut leaf miner

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