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001-es BibID:BIBFORM083186
035-os BibID:(WoS)000438116500009 (Scopus)85047828659
Első szerző:Deák Balázs (biológus)
Cím:Landscape and habitat filters jointly drive richness and abundance of specialist plants in terrestrial habitat islands / Deák Balázs, Valkó Orsolya, Török Péter, Kelemen András, Bede Ádám, Csathó András István, Tóthmérész Béla
Dátum:2018
ISSN:0921-2973
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Landscape Ecology. - 33 : 7 (2018), p. 1117-1132. -
További szerzők:Valkó Orsolya (1985-) (biológus) Török Péter (1979-) (biológus-ökológus) Kelemen András (1986-) (biológus-ökológus) Bede Ádám Csathó András István Tóthmérész Béla (1960-) (ökológus)
Internet cím:Szerző által megadott URL
DOI
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2.

001-es BibID:BIBFORM001358
Első szerző:Jordán Ferenc
Cím:Carabids (Coleoptera: Carabidae) in a forest patchwork: a connectivity analysis of the Bereg Plain landscape graph / Ferenc Jordán, Tibor Magura, Béla Tóthmérész, Vera Vasas, Viktor Ködöböcz
Dátum:2007
Megjegyzések:For many species, one important key to persistence is maintaining connectivity among local populations that allow for dispersal and gene flow. This is probably true for carabid species (Coleoptera: Carabidae) living in the fragmented forests of the Bereg Plain (NE Hungary and W Ukraine). Based on field data, we have drafted a landscape graph of the area representing the habitat network of these species. Graph nodes and links represented two kinds of landscape elements: habitat (forest) patches and corridors, respectively. The quality of habitat patches and corridors were ranked (from low (1) to high (4)), reflecting local population sizes in the case of patches and estimated permeability in the case of corridors. We analysed (1) the positional importance of landscape elements in maintaining the connectivity of the intact network, (2) the effect of inserting hypothetical corridors into the network, (3) the effects of improving the quality of the existing corridors, and (4) how to connect every patch in a cost-effective way. Our results set quantitative priorities for conservation practice by identifying important corridors: what to protect, what to build and what to improve. Several network analytical techniques were used to account for the directed (source-sink) and highly fragmented nature of the landscape graph. We provide conservation priority ranks for the landscape elements and discuss the conditions for the use of particular network indices. Our study could be of extreme relevance, since a new highway is being planned through the area.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
Landscape graph
Reachability
Isolation
Connectivity
Carabidae
Hungary
Directed graph
Megjelenés:Landscape Ecology. - 22 (2007), p. 1527-1539. -
További szerzők:Magura Tibor (1969-) (ökológus) Vasas Vera Ködöböcz Viktor Tóthmérész Béla (1960-) (ökológus)
Internet cím:DOI
elektronikus változat
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3.

001-es BibID:BIBFORM085224
Első szerző:Magura Tibor (ökológus)
Cím:Changes in carabid beetle assemblages along an urbanisation gradient in the city of Debrecen, Hungary / T. Magura, B. Tóthmérész, T. Molnár
Dátum:2004
ISSN:0921-2973
Megjegyzések:Responses of carabid beetles Coleoptera: Carabidae to urbanisation were studied along an urban-suburban-rural gradient representing decreasing intensities of human disturbance. Carabids were collected by pitfall trapping during their activity period in lowland oak forest patches in the city of Debrecen, Eastern Hungary. The average number of carabid species was significantly higher in the rural and urban areas compared to the suburban one. The high overall species richness in the urban area was due to the presence of species preferring open habitats. The species richness of forest specialist carabids significantly increased along the urban-rural gradient. The overall carabid abundance was significantly higher in the rural than the other two areas. The results did not support the hypothesis that overall diversity should decrease in response to habitat disturbance. They also contradicted the intermediate disturbance hypothesis: species richness was not the highest in the moderately disturbed suburban area. In the urban area, opportunistic species dominated. The average carabid body size was significantly larger in the rural and suburban areas than in the more disturbed urban area. Multivariate methods detected changes in species composition and abundance structure along the urban-rural gradient. Significant proportion of the variation in abundance and species richness was explained by the heterogeneity of environmental variables ground temperature, surface temperature, humidity, cover of decaying wood material, herbs, canopy layer, and by the amount of prey .
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Carabid beetles
GlobeNet
Human disturbance
Increased disturbance hypothesis
Intermediate disturbance hypothesis
Mean body size hypothesis
Species richness
Urbanisation
Megjelenés:Landscape Ecology. - 19 (2004), p. 747-759. -
További szerzők:Tóthmérész Béla (1960-) (ökológus) Molnár Tamás
Internet cím:DOI
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4.

001-es BibID:BIBFORM016172
Első szerző:Magura Tibor (ökológus)
Cím:Effects of urbanization on ground-dwelling spiders in forest patches, in Hungary / Tibor Magura, Roland Horváth, Béla Tóthmérész
Dátum:2010
Megjegyzések:Effects of urbanization on ground-dwellingspiders (Araneae) were studied using pitfall trapsalong an urban-suburban?rural forest gradient inDebrecen (Hungary). We found that overall spiderspecies richness was significantly higher in the urbansites compared to the suburban and rural ones. Theincreased diversity was due to the significantly moreopen-habitat species in the assemblages at the urbansites. This suggests that species from the surroundingmatrix (grasslands and arable lands) penetrated thedisturbed urban sites. The ratio of forest species wassignificantly higher in the rural sites than in thesuburban and urban ones, suggesting that forestspecies are indeed sensitive to the disturbance causedby urbanization. Canonical correspondence analysisrevealed that the species composition changedremarkably along the urbanization gradient. Openhabitatspiders were associated with the urban sites ofhigher ground and air temperature. Forest spiderswere characteristic of the rural sites with higheramount of decaying woods. Our findings suggest thatthe overall diversity was not the most appropriateindicator of disturbance; species with differenthabitat affinity should be analyzed separately to getan ecologically relevant picture of the effect ofurbanization.
Tárgyszavak:Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
Araneae
Disturbance
Diversity
Forest species
Fragmentation
Habitat affinity
Megjelenés:Landscape Ecology. - 25 : 4 (2010), p. 621-629. -
További szerzők:Horváth Roland (1974-) (biológus-ökológus) Tóthmérész Béla (1960-) (ökológus)
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
DOI
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5.

001-es BibID:BIBFORM010642
Első szerző:Vasas Vera
Cím:Graph theory in action: evaluating planned highway tracks based on connectivity measures / Vera Vasas, Tibor Magura, Ferenc Jordán, Béla Tóthmérész
Dátum:2009
Megjegyzések:Maintaining connectivity among local populations in a fragmented landscape is crucial for the survival of many species. For isolated habitat patches, stochastic fluctuations and reduced gene flow can lead to high risk of extinction. The connectivity of the landscape is especially crucial for the carabid species living in the fragmented forests of the Bereg plain (NE Hungary and W Ukraine) because a highway will be constructed through the plain. Our purpose is to (1) evaluate the impacts of three possible highway tracks, (2) suggest a solution that is realistic with less impact on connectivity than other plans and (3) discuss how to decrease the disadvantageous effects of each track. Our results, based on a network analysis of landscape graph of patches and ecological corridors, indicate that the intended highway could have deleterious consequences on forest-living carabids. Relatively simple actions, like the establishment of stepping stones, could compensate for the loss of habitat connectivity and promote the survival of carabids, or minor modifications in one possible track could diminish its adverse effects. While many other studies would be needed for a comprehensive assessment of the biotic impact of the highway, we provide an example on the usefulness of network analysis for land use management.
Tárgyszavak:Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
Habitat network
Landscape graph
Carabidae
Bereg plain
Megjelenés:Landscape Ecology. - 24 (2009), p. 581-586. -
További szerzők:Magura Tibor (1969-) (ökológus) Jordán Ferenc Tóthmérész Béla (1960-) (ökológus)
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
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