Global patterns in the metacommunity structuring of lake macrophytes: regional variations and driving factors

Alahuhta, Janne; Lindholm, Marja; Bove, Claudia Petean; Chappuis, Eglantine; Clayton, J. S.; Winton, Mary de; Feldmann, Tõnu; Ecke, Frauke; Gacia, Esperança; Grillas, Patrick; Hoyer, Mark V.; Johnson, Lucinda B.; Kolada, Agnieszka; Kosten, Sarian; Lauridsen, Torben L.; Lukács, Balázs András; Mjelde, Marit; Mormul, Roger Paulo; Rhazi, Laïla; Rhazi, Mouhssine; Sass, Laura; Søndergaard, Martin; Xu, Jun; Heino, Jani

doi:10.1007/s00442-018-4294-0

Cited by 56 publications

(71 citation statements)

References 90 publications

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“…Region identity can indirectly mirror the influence of historical effects and climatic forcing on local community structure (Declerck et al 2011;Heino et al 2017). Thus, our correlative results lend support to previous investigations that have similarly found that environmental filtering controls variation in species richness and species composition of lentic macrophytes at the regional scale (Alahuhta et al , 2018Viana et al 2014).…”

Section: Environmental Filtering Prevails In Lake Macrophyte Metacommsupporting

confidence: 88%

“…Previous studies on lake macrophyte metacommunities have found that environmental filtering dominated over spatial structuring in explaining variation in lake macrophyte communities (Alahuhta et al 2018), although opposite patterns have been reported in certain lake types (Hájek et al 2011;Padial et al 2014). Our results revealed that environmental filtering explained most variation for both species richness and species composition of helophytes and hydrophytes, but dispersal-related variables (i.e.…”

Section: Discussioncontrasting

confidence: 49%

“…We assessed the variation explained by each variable group with adjusted R 2 , which provides unbiased estimates of the explained variation (Peres-Neto et al 2006). The use of adjusted R 2 values often decreases the percentage of variation explained, resulting in a substantial amount of unexplained variation (Alahuhta and Heino 2013;Tonkin et al 2016;Alahuhta et al 2018). We used a variable selection procedure, where the forward selection was carried out only if a global test using all explanatory variables in a variable set was significant (Blanchet et al 2008).…”

Section: Methodsmentioning

confidence: 99%

“…In the metacommunity theory, the fundamental aim is to understand whether environmental factors or spatial processes (e.g., dispersal limitation) are key drivers of biological communities (Heino et al 2015;Brown et al 2017). Recently, Alahuhta et al (2018) found that environmental filtering controlled macrophyte community variation in most of the studied metacommunities in a global analysis across 16 regions. However, spatial processes have been found to significantly structure macrophyte communities in some mountain ponds, wetlands and floodplain lakes (Hájek et al 2011;Padial et al 2014;Alahuhta et al 2018).…”

Section: Introductionmentioning

confidence: 99%

“…Recently, Alahuhta et al (2018) found that environmental filtering controlled macrophyte community variation in most of the studied metacommunities in a global analysis across 16 regions. However, spatial processes have been found to significantly structure macrophyte communities in some mountain ponds, wetlands and floodplain lakes (Hájek et al 2011;Padial et al 2014;Alahuhta et al 2018). Thus, more research is needed to gain a better understanding of the metacommunity structuring in aquatic macrophytes across regions.…”

Section: Introductionmentioning

confidence: 99%

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Environmental determinants of lake macrophyte communities in Baikal Siberia

et al. 2020

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We investigated whether environmental filtering or dispersal-related factors mostly drive helophyte and hydrophyte species richness and community composition in 93 lakes situated in Baikal Siberia. Using partial linear regression and partial redundancy analysis, we studied (1) what are the relative roles of environmental variables, dispersal variables, spatial processes and region identity (i.e., river basins) in explaining variation in the species richness and species composition of helophytes and hydrophytes across 93 Siberian lakes, and (2) what are the differences in the most important explanatory variables driving community variation in helophytes versus hydrophytes? We found that, for both species richness and species composition, environmental variables clearly explained most variation for both plant groups, followed by region identity and dispersalrelated variables. Spatial variables were significant only for the species composition of hydrophytes. Nutrient-salinity index, a proxy for habitat trophic-salinity status, was by far the most significant environmental determinant of helophytes and hydrophytes. Our results indicate that environmental factors explained the most variation in both species richness and species composition of helophytes and hydrophytes. Nevertheless, dispersal-related variables (i.e. spatial and dispersal) were also influential but less important than environmental factors. Furthermore, the dispersal-related variables were more important for hydrophytes than for helophytes. Most brackish permanent lakes were mostly located in the steppe biomes of southern Transbaikalia. This characteristic along with the oldest age, the largest distances to both river and settlements and the lowest temperatures in the study region distinguished them from freshwater, drained and more nutrient-rich floodplain lakes.

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Section: Environmental Filtering Prevails In Lake Macrophyte Metacommsupporting

confidence: 88%

Section: Discussioncontrasting

confidence: 49%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Environmental determinants of lake macrophyte communities in Baikal Siberia

et al. 2020

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Freshwater Biogeography in a Nutshell

Oikonomou¹

2021

Biogeography

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Elements of lake macrophyte metacommunity structure: Global variation and community‐environment relationships

García‐Girón

Heino

Baastrup‐Spohr

et al. 2020

Limnology & Oceanography

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Documenting the patterns of biological diversity on Earth has always been a central challenge in macroecology and biogeography. However, we are only beginning to generate an understanding of the global patterns and determinants of macrophyte diversity. Here, we studied large‐scale variation and community‐environment relationships of lake macrophytes along climatic and geographical gradients using regional data from six continents. We applied statistical routines typically used in the context of metacommunity studies to provide novel insights into macrophyte community compositional patterns within regions worldwide. We found that lake macrophyte metacommunities followed clumped species replacement structures, suggesting that two or more species groups were responding similarly to the environment within regions. Underlying such general convergence, our results also provided evidence that community‐environment relationships were largely context‐dependent, stressing that no single mechanism is enough to account for the complex nature of compositional variation. Surprisingly, we found no general relationships between functional or phylogenetic composition and main metacommunity types, suggesting that linking multi‐trait and evolutionary information to the elements of metacommunity structure is not straightforward. Our findings highlight that global conservation initiatives and biodiversity protection need to capture environmental variation at the metacommunity level, and acknowledge the highly context‐dependent patterns in the community‐environment relationships of lake macrophytes. Overall, we emphasize the need to embrace the potential complexity of ecological inferences in metacommunity organization across the globe.

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Global patterns in the metacommunity structuring of lake macrophytes: regional variations and driving factors

Cited by 56 publications

References 90 publications

Environmental determinants of lake macrophyte communities in Baikal Siberia

Environmental determinants of lake macrophyte communities in Baikal Siberia

Freshwater Biogeography in a Nutshell

Elements of lake macrophyte metacommunity structure: Global variation and community‐environment relationships

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