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001-es BibID:	BIBFORM004993
Első szerző:	Magura Tibor (ökológus)
Cím:	Time-consistent rearrangement of carabid beetle assemblages by an urbanisation gradient in Hungary / Tibor Magura, Gábor L. Lővei, Béla Tóthmérész
Dátum:	2008
Megjegyzések:	To examine the impact of urbanisation on arthropod biodiversity, carabid (Coleoptera: Carabidae) assemblages were studied over 2 years along a rural-urban gradient representing increasing levels of human disturbance. Carabids were collected by pitfall trapping during their whole activity period in lowland oak forest patches in and near the city of Debrecen, Eastern Hungary, over two seasons (2001?2002). Carabid activity density was significantly higher in the rural than in the two other areas, but there was no significant difference in species richness (measured as mean number of species caught/trap). The proportion of forest specialists significantly decreased from the rural towards the urban area, and the proportion of forest specialist species was significantly higher in the rural and suburban areas than in the urban one. In contrast, the relative activity density of generalist species significantly increased along the rural?urban gradient. Both the relative number of openhabitat species and their activity density were significantly higher in the urban forest fragments than in the suburban and rural ones. The patterns found were consistent between the 2 years. Multidimensional scaling indicated pronounced changes in species composition along the gradient; the assemblages in urban forest fragments were more variable than in the other areas. A large proportion of the variation in overall activity density, species richness and the proportion of carabids with different habitat affinities could be explained by structural habitat variables (percentage cover by canopy, leaf litter, herbs and decaying wood), and prey availability.
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban Urbanisation Species richness GLOBENET Habitat alteration hypothesis Increased disturbance hypothesis Intermediate disturbance hypothesis
Megjelenés:	Acta Oecologica. - 34 : 2 (2008), p. 233-243. -
További szerzők:	Lövei Gábor L. Tóthmérész Béla (1960-) (ökológus)
Internet cím:	DOI elektronikus változat
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001-es BibID:	BIBFORM117113
035-os BibID:	(WoS)000641035900015 (Scopus)85097762489 (cikkazonosító)103692
Első szerző:	Tammaru, Keily
Cím:	Ecological differentiation of Carex species coexisting in a wet meadow: Comparison of pot and field experiments / Keily Tammaru, Jan Košnar, Amira Fatime Abbas, Karola Anna Barta, Francesco de Bello, Stefan Harrison, Emilia Innocenti Degli, Réka Kiss, Katalin Lukács, Szilvia Márta Neumann, Hayden Wagia, Javier Puy, Jan Lepš
Dátum:	2021
ISSN:	1146-609X
Megjegyzések:	Competitive exclusion is to be expected between phylogenetically similar species that share traits and resources. However, species may overcome this, either through differentiation of their responses to biotic and abiotic conditions, or by trait differentiation, thus enabling their coexistence. We identified differences in phenotypic traits between seven coexisting Carex species and their responses to competition and fertilization in pot experiments, before using long-term field experiments to generate responses of the Carex species to fertilization and mowing and to illustrate temporal variability between species. Finally, we assessed how effective the results of the pot experiment were at predicting species responses in the field. In pot experiments, we found that species responded more to competition than to fertilization. Notably, all species showed similar responses to these factors in the pot experiments. Fertilization decreased the root:shoot ratio, whilst competition decreased growthrelated characteristics such as total biomass, irrespective of the species. Differences among species were only found in their clonal response to competition, namely rhizome production and generation rate of new ramets. These findings support the idea that different clonal growth strategies may facilitate niche partitioning of Carex species. Species responses measured from pot experiments were poor predictors of their responses in the field experiment. Nevertheless, we confirmed the prediction that, over time, Carex species with lower growth rates in pot experiments showed more stable biomass production than in the field. We suggest that differences in clonal traits and temporal dynamics support the ability of Carex species to avoid competitive exclusion, enabling their coexistence.
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Acta Oecologica-International Journal Of Ecology. - 110 (2021), p. 1-10. -
További szerzők:	Košnar, Jan Abbas, Amira Fatime Barta, Karola Anna De Bello, Francesco Harrison, Stefan Degli, Emilia Innocenti Kiss Réka (1990-) (biológus, ökológus) Lukács Katalin (1993-) (biológus) Neumann Szilvia Márta Wagia, Hayden Puy, Javier Lepš, Jan
Pályázati támogatás:	FK 124404 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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