Journal ArticleDOI
Spatial extent, regional specificity and metacommunity structuring in lake macrophytes
TLDR
In this paper, the authors examined the effects of varying spatial extent (ecological province, region and subregion) on the environmental and spatial components of variation in lake macrophyte communities.Abstract:
Aim Spatial extent is inherently related to the potential roles of the main mechanisms structuring metacommunities. We examined the effects of varying spatial extent (ecological province, region and subregion) on the environmental and spatial components of variation in lake macrophyte communities. We also studied these effects separately for three macrophyte functional groups. Location The US state of Minnesota. Methods We examined average and heterogeneity differences in macrophyte community composition and environmental variation among the subregions of Minnesota using canonical analysis of principal coordinates (CAP) and homogeneity of multivariate dispersion (PERMDISP), respectively. We further used partial redundancy analysis (pRDA) to decompose variation in macrophyte community composition between environmental variables and spatial location at each spatial extent and geographical region. Spatial variables were derived using principal coordinates of neighbour matrices (PCNM) analysis. Results CAP and PERMDISP analyses showed that the subregions differed both in average community composition and in the heterogeneity of community composition for all macrophyte taxa, for emergent and submerged macrophytes, but not for non-rooted macrophytes. We did not, however, find significant differences in overall environmental heterogeneity among the subregions. Variation partitioning using pRDAs showed that species sorting is more important than spatial processes for macrophytes, although these patterns were relatively weak. There was, however, much regional specificity, with the environmental and spatial fractions of community composition varying widely at different spatial extents, among different geographical regions and among functional groups. Contrary to our initial expectations, we did not find increasing spatial structuring and decreasing environmental control with increasing spatial extent. Main conclusions Our findings indicate that, in macrophyte metacommunities, the relative contribution of spatial processes and environmental control varies rather unpredictably with spatial extent and geographical region. Our findings are thus of importance in advancing metacommunity ecology by showing that drawing wide-ranging conclusions based on a single spatial extent or a single geographical region may be unwise.read more
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Journal ArticleDOI
Metacommunity organisation, spatial extent and dispersal in aquatic systems: patterns, processes and prospects
Jani Heino,Adriano S. Melo,Tadeu Siqueira,Janne Soininen,Sebastian Valanko,Sebastian Valanko,Sebastian Valanko,Luis Mauricio Bini +7 more
TL;DR: A better understanding of the relative roles of species sorting, mass effects and dispersal limitation in affecting aquatic metacommunities requires the following: characterising dispersal rates more directly or adopting better proxies than have been used previously; considering the nature of aquatic networks; and combining correlative and experimental approaches.
Journal ArticleDOI
Metacommunity structuring in stream networks: roles of dispersal mode, distance type, and regional environmental context
Mira Grönroos,Mira Grönroos,Jani Heino,Jani Heino,Tadeu Siqueira,Victor Lemes Landeiro,Juho Kotanen,Luis Mauricio Bini +7 more
TL;DR: In general, active dispersers with terrestrial adults showed stronger environmental control than the two passively dispersing groups, suggesting that the species dispersing actively are better able to track environmental variability.
Journal ArticleDOI
A comparative analysis reveals weak relationships between ecological factors and beta diversity of stream insect metacommunities at two spatial levels.
Jani Heino,Adriano S. Melo,Luis Mauricio Bini,Florian Altermatt,Florian Altermatt,Salman Abdo Al-Shami,Salman Abdo Al-Shami,David G. Angeler,Núria Bonada,Cecilia Brand,Marcos Callisto,Karl Cottenie,Olivier Dangles,Olivier Dangles,David Dudgeon,Andrea C. Encalada,Emma Göthe,Mira Grönroos,Neusa Hamada,Dean Jacobsen,Victor Lemes Landeiro,Raphael Ligeiro,Renato Tavares Martins,María Laura Miserendino,Che Salmah Md Rawi,Marciel Elio Rodrigues,Fabio de Oliveira Roque,Leonard Sandin,Dénes Schmera,Dénes Schmera,Luciano F. Sgarbi,John P. Simaika,Tadeu Siqueira,Ross M. Thompson,Colin R. Townsend +34 more
TL;DR: The hypotheses that beta diversity should increase with decreasing latitude and increase with spatial extent of a region have rarely been tested based on a comparative analysis of multiple datasets, and no such study has focused on stream insects.
Journal ArticleDOI
Global variation in the beta diversity of lake macrophytes is driven by environmental heterogeneity rather than latitude
Janne Alahuhta,Sarian Kosten,Munemitsu Akasaka,Dominique Auderset,Mattia M. Azzella,Rossano Bolpagni,Claudia Petean Bove,Patricia A. Chambers,Eglantine Chappuis,John S. Clayton,Mary de Winton,Frauke Ecke,Esperança Gacia,Gana Gecheva,Patrick Grillas,Jennifer Hauxwell,Seppo Hellsten,Jan Hjort,Mark V. Hoyer,Christiane Ilg,Agnieszka Kolada,Minna Kuoppala,Torben L. Lauridsen,En‒hua Li,Balázs András Lukács,Marit Mjelde,Alison Mikulyuk,Alison Mikulyuk,Roger Paulo Mormul,Jun Nishihiro,Beat Oertli,Laila Rhazi,Mouhssine Rhazi,Laura Sass,Christine Schranz,Martin Søndergaard,Takashi Yamanouchi,Qing Yu,Hai-Jun Wang,Nigel Willby,Xiao‒ke Zhang,Jani Heino +41 more
TL;DR: Gecheva et al. as mentioned in this paper proposed a method to identify the root cause of gender discrimination in the media and found that women are more likely to be discriminated against than men.
Journal ArticleDOI
Metacommunity ecology meets biogeography: effects of geographical region, spatial dynamics and environmental filtering on community structure in aquatic organisms
TL;DR: It is concluded that aquatic communities across large scales are mostly determined by environmental and basin effects, which leads to high beta diversity and prevalence of Clementsian community types.
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