Global patterns in the metacommunity structuring of lake macrophytes: regional variations and driving factors
Laen...
Kuupäev
2018
Kättesaadav alates
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Springer
Abstrakt
We studied community–environment relationships of lake macrophytes at two metacommunity scales using data from 16
regions across the world. More specifically, we examined (a) whether the lake macrophyte communities respond similar to
key local environmental factors, major climate variables and lake spatial locations in each of the regions (i.e., within-region
approach) and (b) how well can explained variability in the community–environment relationships across multiple lake macrophyte
metacommunities be accounted for by elevation range, spatial extent, latitude, longitude, and age of the oldest lake
within each metacommunity (i.e., across-region approach). In the within-region approach, we employed partial redundancy
analyses together with variation partitioning to investigate the relative importance of local variables, climate variables, and
spatial location on lake macrophytes among the study regions. In the across-region approach, we used adjusted R2 values of
the variation partitioning to model the community–environment relationships across multiple metacommunities using linear
regression and commonality analysis. We found that niche filtering related to local lake-level environmental conditions was
the dominant force structuring macrophytes within metacommunities. However, our results also revealed that elevation range
associated with climate (increasing temperature amplitude affecting macrophytes) and spatial location (likely due to dispersal
limitation) was important for macrophytes based on the findings of the across-metacommunities analysis. These findings
suggest that different determinants influence macrophyte metacommunities within different regions, thus showing context
dependency. Moreover, our study emphasized that the use of a single metacommunity scale gives incomplete information
on the environmental features explaining variation in macrophyte communities.
Open access funding provided by University of Oulu including Oulu University Hospital. JA appreciates financial support from the Ella and Georg Ehrnrooth Foundation. BAL was supported by National Research, Development and Innovation Office—NKFIH, OTKA PD120775 Grant and by the Bolyai János Research Scholarship of the Hungarian Academy of Sciences. S.K. was supported by NWO Veni grant 86312012. Sampling of the coastal Brazilian lakes was financed by NWO grant W84-549; The National Geographic Society grant 7864-5; and CNPq grants 480122, 490409, 311427. We thank the SALGA team, especially Gissell Lacerot, Nestor Mazzeo, Vera Huszar, David da Motta Marques, and Erik Jeppesen for organizing and executing the SALGA field sampling campaign and Bruno Irgang† and Eduardo Alonso Paz for help with identification. We thank Minnesota and Wisconsin Departments of Natural Resources for collecting the macrophyte data. We are especially grateful to Carol Reschke, University of Minnesota Duluth, for her work in combining and performing quality control for the Minnesota macrophyte data used in the analysis. This is contribution no. 607 of the Natural Resources Research Inst. of the Univ. of Minnesota Duluth. Provision of New Zealand macrophyte data was possible via NIWA SSIF funding.
Open access funding provided by University of Oulu including Oulu University Hospital. JA appreciates financial support from the Ella and Georg Ehrnrooth Foundation. BAL was supported by National Research, Development and Innovation Office—NKFIH, OTKA PD120775 Grant and by the Bolyai János Research Scholarship of the Hungarian Academy of Sciences. S.K. was supported by NWO Veni grant 86312012. Sampling of the coastal Brazilian lakes was financed by NWO grant W84-549; The National Geographic Society grant 7864-5; and CNPq grants 480122, 490409, 311427. We thank the SALGA team, especially Gissell Lacerot, Nestor Mazzeo, Vera Huszar, David da Motta Marques, and Erik Jeppesen for organizing and executing the SALGA field sampling campaign and Bruno Irgang† and Eduardo Alonso Paz for help with identification. We thank Minnesota and Wisconsin Departments of Natural Resources for collecting the macrophyte data. We are especially grateful to Carol Reschke, University of Minnesota Duluth, for her work in combining and performing quality control for the Minnesota macrophyte data used in the analysis. This is contribution no. 607 of the Natural Resources Research Inst. of the Univ. of Minnesota Duluth. Provision of New Zealand macrophyte data was possible via NIWA SSIF funding.
Kirjeldus
Märksõnad
aquatic plants, biogeography, community structure, elevation range, environmental filtering, hydrophytes, metacommunity ecology, spatial processes, spatial variation, articles