Studying boundary effects on animal movement in heterogeneous landscapes: the case of Abax ater (Coleoptera: Carabidae) in hedgerow network landscapes

Martin, Manuel; Bastardie, François; Richard, David; Burel, Françoise

doi:10.1016/s0764-4469(01)01379-8

Cited by 11 publications

(6 citation statements)

References 21 publications

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“…Much can be learned about the impacts of fragmentation on insect populations by studying the movement of predators and prey among patch types in complex landscapes (Holland & Luff, 2000; Martin et al ., 2001; With et al ., 2002). Simple models assume that rates of movement are independent of landscape structure, typically assume constant movement rates whatever the landscape mosaic in question (Goodwin & Fahrig, 2002), and generally assume that dispersal is random (Conradt et al ., 2001).…”

Section: Insect Movement and Habitat Boundariesmentioning

confidence: 99%

Landscape structure, habitat fragmentation, and the ecology of insects

Hunter¹

2002

Agri and Forest Entomology

189

138

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Section: Insect Movement and Habitat Boundariesmentioning

confidence: 99%

Landscape structure, habitat fragmentation, and the ecology of insects

Hunter¹

2002

Agri and Forest Entomology

189

138

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“…Fahrig and Merriam, 1985;Burel, 1989). This is especially the case for species such as carabid beetles that require habitat continuity for successfully dispersing between suitable patches during the year and throughout their life cycle (Charrier et al, 1997;Martin et al, 2001). Nevertheless, most spatially explicit modeling approaches (see Dunning et al, 1995) issued from the metapopulation paradigm considered the landscape as being simplistically divided into "suitable" and "non-suitable" habitat from the viewpoint of a focal species.…”

Section: Introductionmentioning

confidence: 99%

Modeling spatially explicit population dynamics of Pterostichus melanarius I11. (Coleoptera: Carabidae) in response to changes in the composition and configuration of agricultural landscapes

Benjamin

Gaucherel

Inchausti

2008

Landscape and Urban Planning

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“…Dispersal probabilities of arthropods were estimated as the probability of individuals to move from fencerow towards the crop interior (parameter q , Martin et al , ):

q = N_{normalH normali} true/ N_{T}

N_{T} = N_{normalH normalf} + N_{normalH normali}

where N Hf , N Hi and N T are the total numbers of individuals in the fencerow, the crop interior and the entire field, respectively.…”

Section: Methodsmentioning

confidence: 99%

Structural complexity of arthropod guilds is affected by the agricultural landscape heterogeneity generated by fencerows

2015

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Intensive farming imposes harsh conditions impeding the persistence of most arthropod species within crop fields. Hence, arthropods surviving the unfavourable conditions prevailing within crop fields may disperse towards nearby uncropped margins, such as fencerows. Here, we evaluate the influence of landscape heterogeneity on the abundance of different guilds, particularly herbivores and their natural enemies. Said heterogeneity mostly derives from fencerow network density. Hence, we developed an approach based on fitting linear-mixed models to elucidate the effects of landscape heterogeneity and field position (fencerows and crop interiors) on arthropod diversity. Mixed models were fitted to arthropod data obtained by pitfall trap samplings in 36 crop fields. Arthropod communities were structurally and functionally more complex along fencerows than within nearby crop interiors. Arthropods abundance was modulated by landscape heterogeneity, increasing the abundance of natural enemies as the landscape heterogeneity increased. On the contrary, herbivores abundance decreased as landscape heterogeneity increased. Consequently, the ratio between herbivores and natural enemies also decreased as landscapes became more heterogeneous. Natural enemies with larger body sizes, mostly carabid beetles, were more sensitive to landscape homogenisation. Our study reveals that, despite the coarse-grained landscapes in the Rolling Pampa, fencerow density appears as a key factor for structuring complex arthropod guilds in intensively farmed agricultural mosaics. In landscapes with higher density of fencerows, arthropods tend to concentrate along them, thus increasing the community structural complexity as well as the predation pressure over herbivores. This structural complexity of upper trophic levels enhances the 'top-down' regulation of herbivore populations, consequently decreasing the probability of pest outbreaks within crop fields.

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Studying boundary effects on animal movement in heterogeneous landscapes: the case of Abax ater (Coleoptera: Carabidae) in hedgerow network landscapes

Cited by 11 publications

References 21 publications

Landscape structure, habitat fragmentation, and the ecology of insects

Landscape structure, habitat fragmentation, and the ecology of insects

Modeling spatially explicit population dynamics of Pterostichus melanarius I11. (Coleoptera: Carabidae) in response to changes in the composition and configuration of agricultural landscapes

Structural complexity of arthropod guilds is affected by the agricultural landscape heterogeneity generated by fencerows

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