Species sorting in space and time—the impact of disturbance regime on community assembly in a temporary pool metacommunity

Vanschoenwinkel, Bram; Waterkeyn, Aline; Jocqué, Merlijn; Boven, Liesbet; Seaman, Maitland; Brendonck, Luc

doi:10.1899/09-114.1

Cited by 93 publications

(93 citation statements)

References 41 publications

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“…This was surprising as several previous studies with larger organisms have shown that physical harshness, including droughts and differences in habitat permanency, decreases b-diversity and leads to strong species sorting in the sense that only a fraction of the predisturbance communities can survive the disturbance event (Chase, 2007;Lepori and Malmqvist, 2009;Vanschoenwinkel et al, 2010). Possible reasons for the absence of a similar pattern in the studied bacterial metacommunity might be related to rapid recolonisation of rewettened patches after drought events from presumably large seed banks of dormant cells (Lennon and Jones, 2011), rain or adjacent permanent pools.…”

Section: Discussionmentioning

confidence: 92%

“…b-Diversity, that is, the turnover of community composition over space and time, varies along environmental gradients, such as productivity (Chase and Leibold, 2002;Chase and Ryberg, 2004), environmental heterogeneity (Chase, 2003;Mouquet et al, 2006;Verleyen et al, 2009), disturbance regime (Chase, 2007;Jiang and Patel, 2008;Vanschoenwinkel et al, 2010) and depends on dispersal or connectivity among patches (Chase, 2003;Mouquet and Loreau, 2003;Verleyen et al, 2009).In general, b-diversity can be influenced by local within-habitat factors, such as environmental conditions or species interactions, as well as regional factors that are related to dispersal from a regional species pool to the local community (Ricklefs, 1987). These factors are integrated into the metacommunity framework (Leibold et al, 2004), which includes four perspectives that differ with regard to the importance that they allocate to the local environment, dispersal and stochasticity.…”

Section: Introductionmentioning

confidence: 99%

“…The major aim of this study was to investigate whether bacterial communities may be structured by different assembly mechanisms over time and to what extent three factors, productivity, environmental heterogeneity and disturbance regime, which have been shown to be important regulating factors of b-diversity and assembly mechanisms in larger organisms (Chase, 2007(Chase, , 2010Verleyen et al, 2009;Vanschoenwinkel et al, 2010), drive temporal dynamics in b-diversity and assembly mechanisms. More specifically, we investigate (1) whether b-diversity changes over time along gradients of productivity and environmental heterogeneity, (2) whether these changes can be linked to differences in the underlying assembly mechanisms, in particular species sorting compared with dispersaldriven mechanisms, and (3) whether b-diversity will be lower in systems frequently exposed to physical disturbances such as droughts.…”

Section: Introductionmentioning

confidence: 99%

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Temporal variation of β-diversity and assembly mechanisms in a bacterial metacommunity

et al. 2011

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The turnover of community composition across space, b-diversity, is influenced by different assembly mechanisms, which place varying weight on local habitat factors, such as environmental conditions and species interactions, and regional factors such as dispersal and history. Several assembly mechanisms may function simultaneously; however, little is known about how their importance changes over time and why. Here, we implemented a field survey where we sampled a bacterial metacommunity consisting of 17 rock pools located at the Swedish Baltic Sea coast at 11 occasions during 1 year. We determined to which extent communities were structured by different assembly mechanisms using variation partitioning and studied changes in b-diversity across environmental gradients over time. b-Diversity was highest at times of high overall productivity and environmental heterogeneity in the metacommunity, at least partly due to species sorting, that is, selection of taxa by the prevailing environmental conditions. In contrast, dispersal-driven assembly mechanisms were primarily detected at times when b-diversity was relatively low. There were no indications for strong and persistent differences in community composition or b-diversity between permanent and temporary pools, indicating that the physical disturbance regime is of relatively minor importance. In summary, our study clearly suggests that there are temporal differences in the relative importance of different assembly mechanisms related to abiotic factors and shows that the temporal variability of those factors is important for a more complete understanding of bacterial metacommunity dynamics.

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Section: Discussionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Temporal variation of β-diversity and assembly mechanisms in a bacterial metacommunity

et al. 2011

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“…Subsequent studies on the correlation between community structures and habitat types in temporary wetlands during seasonal drought focused on these four groups (Lake et al 1989;Schneider & Frost 1996;Wellborn et al 1996;Brooks 2000;Sim et al 2013). Vanschoenwinkel et al (2010) classified benthic macroinvertebrates into two groups, the passive dispersal and active dispersal groups, and explained the spatiotemporal fluctuations of the community using colonization and extinction dynamics. Recently, comprehensive studies were conducted to investigate successional patterns and trajectories of freshwater wetland macroinvertebrates and to discriminate a core set of organisms that comprise nested and idiosyncratic communities (Ruh ı et al 2012Batzer & Ruh ı 2013).…”

Section: Introductionmentioning

confidence: 99%

Drought effects on the colonization of benthic macroinvertebrate communities in the early successional phases in experimental mesocosm wetlands

Kim

Lee

Choi

et al. 2014

Journal of Freshwater Ecology

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We investigated the drought effects on the colonization rate and pattern of benthic macroinvertebrate communities in newly created mesocosm wetlands in the central Korean Peninsula, from June 2011 to June 2013. The comparison was made between the initial colonization after mesocosm construction (pre-drought) and the recolonization after a drought event (post-drought) with a drought period of 50 days between them. In addition, we categorized communities according to their biological traits in relation to drought. Our results showed that aquatic vegetation abundance and covering degree were higher in post-drought than in pre-drought, thereby influencing rapid colonization. Drought-resistant benthic macroinvertebrates colonized rapidly in post-drought; consequently, the colonization speed was 2.5-fold higher in postdrought than in pre-drought. We classified the benthic macroinvertebrate taxa into three groups: (1) a resistant group which generally emerged after the initial colonization period (e.g., Mollusca, Turbellaria, and Oligochaeta); (2) a sensitive group with diverse life history strategies and biological traits such as active migration or population decline after drought disturbance (e.g., Diptera: Chironominae, Odonata: Orthetrum, Coleoptera: Agabus and Rhantus); and (3) a seasonal group, which emerged only during certain periods and were not markedly influenced by drought (e.g., Ephemeroptera: Cloeon, Diptera: Culicidae, Odonata: Zygoptera and Pantala). Our findings elucidated the effects of drought on benthic macroinvertebrate communities in wetlands by using a mesocosm experiment.

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“…An example of such interactions is that fragmented habitats (smaller, disconnected habitats) might be more affected by disturbance than continuous habitats, because recolonization is less likely in isolated habitats (Starzomski and Srivastava 2007). Landscape structure has also been found to influence disturbance-sensitive species more than tolerant species (Vanschoenwinkel et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Negative and matrix‐dependent effects of dispersal corridors in an experimental metacommunity

Åström

Pärt

2013

Ecology

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Abstract. Negative effects of habitat fragmentation are well-known phenomena in ecology, and the use of corridors is one suggested remedy to ameliorate community disassembly. Most experiments of landscape structure, however, do not consider matrix quality and environmental conditions, despite their potential to affect both landscape permeability and population densities. For the first time in fragmented landscapes, we simultaneously investigated the effects of local disturbance, dispersal corridors, matrix quality, and environmental stress, as well as their interactions, on species richness and abundance. We used a natural micro-ecosystem of bryophyte patches with microarthropods as a model system. Contrary to expectations, there were no negative responses to fragmentation of large continuous habitats. Surprisingly, connecting fragmented patches with dispersal corridors had negative effects on the abundance and species richness of the most species-rich group, oribatid mites. It had also negative effects on the abundance of collembolans and predatory mites in landscapes with complex matrix, which was also generally detrimental. Environmental stress was detrimental for all taxa but interacted with matrix type for oribatid species richness and juvenile oribatid abundance. Our results indicate that interactions can strongly alter community responses to common explanatory factors such as fragmentation, disturbance, connectivity, and environmental quality. Future studies of metacommunity dynamics need to consider the potential for such interactions in order to produce robust predictions of spatially structured landscapes.

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Species sorting in space and time—the impact of disturbance regime on community assembly in a temporary pool metacommunity

Cited by 93 publications

References 41 publications

Temporal variation of β-diversity and assembly mechanisms in a bacterial metacommunity

Temporal variation of β-diversity and assembly mechanisms in a bacterial metacommunity

Drought effects on the colonization of benthic macroinvertebrate communities in the early successional phases in experimental mesocosm wetlands

Negative and matrix‐dependent effects of dispersal corridors in an experimental metacommunity

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