Találati lista | Tudóstér

001-es BibID:	BIBFORM079671
035-os BibID:	(WOS)000399738700040 (Scopus)85015177805
Első szerző:	Kelemen András (biológus-ökológus)
Cím:	New aspects of grassland recovery in old-fields revealed by trait-based analyses of perennial-crop-mediated succession / Kelemen András, Tóthmérész Béla, Valkó Orsolya, Miglécz Tamás, Deák Balázs, Török Péter
Dátum:	2017
ISSN:	2045-7758
Megjegyzések:	Classical old-field succession studies focused on vegetation changes after the abandonment of annual croplands or on succession after the elimination of cultivated crops. Perennial-crop-mediated succession, where fields are initially covered by perennial crops, reveals alternative aspects of old-field succession theories. We tested the validity of classical theories of old-field succession for perennial-crop-mediated succession. We formulated the following hypotheses: (1) functional diversity increases with increasing field age; (2) resource acquisition versus conservation trade-off shifts toward conservation at community level during the succession; (3) the importance of spatial and temporal seed dispersal decreases during the succession; and (4) competitiveness and stress-tolerance increases and ruderality decreases at community level during the succession. We studied functional diversity, trait distributions and plant strategies in differently aged old-fields using chronosequence method. We found increasing functional richness and functional divergence, but also unchanged or decreasing functional evenness. We detected a shift from resource acquisition to resource conservation strategy of communities during the succession. The role of spatial and temporal seed dispersal was found to be important not only at the initial but also at latter successional stages. We found an increasing stress-tolerance and a decreasing ruderality during succession, while the competitiveness remained unchanged at the community level. Despite the markedly different starting conditions, we found that classical and perennial-crop-mediated old-field successions have some similarities regarding the changes of functional diversity, resource acquisition versus conservation trade-off, and seed dispersal strategies. However, we revealed also the subsequent differences. The competitive character of communities remained stable during the succession; hence, the initial stages of perennial-crop-mediated succession can be similar to the middle stages of classical old-field succession. Moreover, the occupied functional niche space and differentiation were larger in the older stages, but resources were not effectively utilized within this space, suggesting that the stabilization of the vegetation requires more time.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk alfalfa C-S-R strategies functional diversity leaf traits resource acquisition seed traits
Megjelenés:	Ecology and Evolution. - 7 : 7 (2017), p. 2432-2440. -
További szerzők:	Tóthmérész Béla (1960-) (ökológus) Valkó Orsolya (1985-) (biológus) Miglécz Tamás (1986-) (biológus ökológus) Deák Balázs (1978-) (biológus) Török Péter (1979-) (biológus-ökológus)
Pályázati támogatás:	OTKA PD 116200 OTKA OTKA K 116639 OTKA OTKA PD111807 OTKA PD 115627 Egyéb NKFIH K 119225 Egyéb NTP-NFTÖ-16-0107 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon: