The Importance of the Regional Species Pool, Ecological Species Traits and Local Habitat Conditions for the Colonization of Restored River Reaches by Fish

Stoll, Stefan; Kail, Jochem; Lorenz, Armin W.; Sundermann, Andrea; Haase, Peter

doi:10.1371/journal.pone.0084741

Cited by 70 publications

(67 citation statements)

References 51 publications

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“…This is consistent with the higher mean effect on macroinvertebrate abundance ( r = 0.21) compared to richness ( r = 0.08) reported in Miller et al (2010) and recent empirical and modelling studies which showed that the species pool and source populations for colonization are often sparse and limit the effect of restoration on species richness (Radinger and Wolter, 2015;Stoll et al, 2014;Tonkin et al, 2014).…”

Section: Discussionsupporting

confidence: 89%

The effect of river restoration on fish, macroinvertebrates and aquatic macrophytes: A meta-analysis

Kail

Brabec

Poppe

et al. 2015

Ecological Indicators

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Section: Discussionsupporting

confidence: 89%

The effect of river restoration on fish, macroinvertebrates and aquatic macrophytes: A meta-analysis

Kail

Brabec

Poppe

et al. 2015

Ecological Indicators

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191

180

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“…As recently found with fish (Stoll et al, 2013(Stoll et al, , 2014, and in line with our final hypothesis, the results of the BRT model show that it is not just the presence within the surrounding area but the rate of occurrence of taxa that affects colonisation chances, with density of occurrence in the regional pool being the most important dri-ver of site presence. Taxon identity and restoration site location were overwhelmingly influential in the BRT models when they were included, but cross-validation highlighted they were not strong predictors of general patterns.…”

Section: Discussionsupporting

confidence: 88%

Dispersal distance and the pool of taxa, but not barriers, determine the colonisation of restored river reaches by benthic invertebrates

et al. 2014

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1. Restoration is an increasingly central theme in river ecology. Recent studies have highlighted the importance of the species pool in the surrounding river network for determining colonisation of restored river reaches by both invertebrates and fish. 2. Using a comprehensive data set of 21 river restoration sites and 292 sites in the immediate surroundings, we tested the influence of distance to nearest colonist source on invertebrate colonisation based on a comparison of river network distances and Euclidean distances, expecting river network distances would better align with colonisation rates. We then assessed the importance of dispersal distance in relation to several other parameters, such as the number and intensity of barriers along the river network, surrounding taxon pool occupancy rate, physical characteristics of the restored sites and restoration techniques used in determining colonisation of commonly occurring benthic invertebrates. 3. We hypothesised that (i) distance would be critical, with colonisation of restored sites declining with increasing distance; (ii) barriers between these sites would be a minor, but taxon-specific, influence on the colonisation; and (iii) the higher the regional pool occupancy rate of a certain taxon, the higher its probability of presence at a restored site. 4. Overall, taxon pool occupancy rate was the most important driver of colonisation likelihood, followed by distance to nearest source, with the first kilometre particularly important. The effect of barriers was minor but significant, and taxon identity had no effect on the predictive ability of the model. Factors associated with the restoration projects such as techniques used and physical characteristics had minor influences, being completely outweighed by taxon pool and dispersalrelated factors. 5. To gauge the likelihood of successful outcomes of habitat restoration projects, we suggest it is important to assess regional taxon pools and ensure distances between healthy populations are minimised. These results clearly emphasise the importance of spatial planning for restoration projects.

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“…Differentiating between DL, ME and SS is of fundamental importance, not only for enhancing our basic understanding, but for practical reasons, including biomonitoring and restoration (Heino et al ). Recent work clearly demonstrated that the response of stream communities to restoration was highly dependent on the availability of colonists in the surrounding regional pool, particularly the distance to the nearest colonist and species ubiquity (Stoll et al , Tonkin et al ). In their studies, these factors were the overriding drivers of restoration response.…”

Section: Discussionmentioning

confidence: 99%

Contrasting metacommunity structure and beta diversity in an aquatic‐floodplain system

Tonkin

Stoll

Jähnig

et al. 2015

Oikos

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Habitat connectivity and dispersal interact to structure metacommunities, but few studies have examined these patterns jointly for organisms across the aquatic-terrestrial ecotone. We assessed metacommunity structure and beta diversity patterns of instream benthic invertebrates, riparian carabid beetles (Order: Coleoptera; Family: Carabidae) and riparian spiders (Order: Araneae) at fifteen sites in a river-floodplain system. Sampling took place over a three-year period (2010)(2011)(2012) in the Rhine-Main-Observatory LTER site on the Kinzig River, central Germany. This allowed disentangling the combined influence, and temporal variability, of habitat connectivity (i.e. between aquatic and terrestrial) and dispersal ability (i.e. between spiders and beetles, and aerial and aquatic dispersing invertebrates) on the dominant paradigms structuring these metacommunities. We found mostly consistent differences in the manner that metacommunities were structured between groups, with lower levels of variability explained for beetles compared to the other groups. Beetles were consistently structured more by turnover than nestedness components, with greater beta diversity than expected by chance and a minor spatial compared to environmental signal emerging with variance partitioning. Conversely, spiders and benthic invertebrates had lower beta diversity and greater nestedness than null expectation, and a clearer spatial signal controlling metacommunity structure. Our results suggest varying levels of mass effects and species sorting shape river-floodplain metacommunities, depending on habitat connectivity and dispersal ability. That is, greater connectivity and lower fragmentation along the river compared to the terrestrial zone promoted mass effects, and differences in overall dispersal ability and mode (i.e. active and passive) for instream and riparian communities shifted paradigms between mass effects and species sorting.

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The Importance of the Regional Species Pool, Ecological Species Traits and Local Habitat Conditions for the Colonization of Restored River Reaches by Fish

Cited by 70 publications

References 51 publications

The effect of river restoration on fish, macroinvertebrates and aquatic macrophytes: A meta-analysis

The effect of river restoration on fish, macroinvertebrates and aquatic macrophytes: A meta-analysis

Dispersal distance and the pool of taxa, but not barriers, determine the colonisation of restored river reaches by benthic invertebrates

Contrasting metacommunity structure and beta diversity in an aquatic‐floodplain system

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