2012
Dispersal limitation is stronger in communities of microorganisms than macroorganisms across Central European cities
CHYTRÝ, Milan, Zdeňka LOSOSOVÁ, Michal HORSÁK, Bohuslav UHER, Tomáš ČEJKA et. al.Základní údaje
Originální název
Dispersal limitation is stronger in communities of microorganisms than macroorganisms across Central European cities
Autoři
CHYTRÝ, Milan (203 Česká republika, garant, domácí), Zdeňka LOSOSOVÁ (203 Česká republika, domácí), Michal HORSÁK (203 Česká republika, domácí), Bohuslav UHER (203 Česká republika, domácí), Tomáš ČEJKA (703 Slovensko), Jiří DANIHELKA (203 Česká republika, domácí), Karel FAJMON (203 Česká republika, domácí), Ondřej HÁJEK (203 Česká republika, domácí), Lucie JUŘÍČKOVÁ (203 Česká republika), Kateřina KINTROVÁ (203 Česká republika, domácí), Deana LÁNÍKOVÁ (203 Česká republika, domácí), Zdenka OTÝPKOVÁ (203 Česká republika, domácí), Vladimír ŘEHOŘEK (203 Česká republika, domácí) a Lubomír TICHÝ (203 Česká republika, domácí)
Vydání
Journal of Biogeography, 2012, 0305-0270
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 4.863
Kód RIV
RIV/00216224:14310/12:00059937
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000304139100008
Klíčová slova anglicky
Algae; body size; community structure; cyanobacteria; environmental filtering; land snails; spatial structure; urban ecology; variation partitioning; vascular plants
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 21. 3. 2016 17:07, Ing. Jiří Danihelka, Ph.D.
Anotace
V originále
Aim It is generally believed that communities of small organisms, or those with small propagules, are structured mainly by local niche-based processes, and less by dispersal limitation. Conversely, weaker environmental and stronger spatial structure, indicating dispersal limitation, are expected to occur more frequently in communities of large organisms. However, this hypothesis has rarely been tested by comparing spatial and environmental effects across groups of organisms of different size (or with different size of propagules) sampled at the same set of sites. Here, we test it in urban environments. Location Thirty-two cities in 10 countries of Central Europe and Benelux. Methods Wecompared effects of spatial location and climate on species composition of different groups of organisms sampled in corresponding types of urban habitats. The studied groups were: (1) subaerial cyanobacteria and algae, (2) vascular plants, (3) land snails; and subgroups of vascular plants with different life form and dispersal mode, namely: (4) herbs, (5) animal-dispersed trees and shrubs, and (6) wind-dispersed trees and shrubs. Data were analysed by variation partitioning based on redundancy analysis (RDA) with principal coordinates of neighbour matrices (PCNM). Eighteen PCNM eigenvectors (expressing spatial effects) and mean annual temperature, July–January temperature difference and annual precipitation sum (expressing environmental effects) were used as explanatory variables. Results Pure effects of climate on species composition, indicating niche-based processes, were not significant for any group or subgroup of the studied organisms. In contrast, pure effects of space, indicating dispersal limitation, were significant for all groups and subgroups except herbs. Surprisingly, the community of cyanobacteria/algae possessed much stronger spatial structure independent of climate than communities of larger organisms, although cyanobacteria/algae had the lowest beta diversity among the studied cities. Main conclusions We hypothesize that the community of subaerial cyanobacteria/ algae is structured by natural processes which involve dispersal limitation, whereas communities of urban plants and snails are influenced by human-assisted dispersal of their propagules between cities, which results in weaker dispersal limitation. Our study indicates that dispersal vectors can be more important for community structure than size of organisms or of their propagules.
Návaznosti
MSM0021622416, záměr |
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