Local contribution to beta diversity is negatively linked with community-wide dispersal capacity in stream invertebrate communities

2020 ◽  
Vol 108 ◽  
pp. 105715 ◽  
Author(s):  
Fengqing Li ◽  
Jonathan D. Tonkin ◽  
Peter Haase
Keyword(s):  
Beta Diversity ◽  
Dispersal Capacity ◽  
Invertebrate Communities ◽  
Local Contribution

scholarly journals Local-scale determinants of arboreal spider beta diversity in a temperate forest: roles of tree architecture, spatial distance, and dispersal capacity

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5596 ◽  
Author(s):  
Qiongdao Zhang ◽  
Dong He ◽  
Hua Wu ◽  
Wei Shi ◽  
Cong Chen
Keyword(s):  
Beta Diversity ◽  
Environmental Gradient ◽  
Dispersal Limitation ◽  
Local Scale ◽  
Tree Architecture ◽  
Habitat Specialization ◽  
Spatial Distance ◽  
Species Variation ◽  
Dispersal Capacity ◽  
Canopy Volume

Spiders are a functionally important taxon in forest ecosystems, but the determinants of arboreal spider beta diversity are poorly understood at the local scale. We examined spider assemblages in 324 European beech (Fagus sylvatica) trees of varying sizes across three forest stands in Würzburg (Germany) to disentangle the roles of tree architecture, spatial distance, and dispersal capacity on spider turnover across individual trees. A large proportion of tree pairs (66%) showed higher compositional dissimilarity in spider assemblages than expected by chance, suggesting prominent roles of habitat specialization and/or dispersal limitation. Trees with higher dissimilarity in DBH and canopy volume, and to a lesser extent in foliage cover, supported more dissimilar spider assemblages, suggesting that tree architecture comprised a relevant environmental gradient of sorting spider species. Variation partitioning revealed that 28.4% of the variation in beta diversity was jointly explained by tree architecture, spatial distance (measured by principal coordinates of neighbor matrices) and dispersal capacity (quantified by ballooning propensity). Among these, dispersal capacity accounted for a comparable proportion as spatial distance did (6.8% vs. 5.9%). Beta diversity did not significantly differ between high- and low-vagility groups, but beta diversity in species with high vagility was more strongly determined by spatially structured environmental variation. Altogether, both niche specialization, along the environmental gradient defined by tree architecture, and dispersal limitation are responsible for structuring arboreal spider assemblages. High dispersal capacity of spiders appears to reinforce the role of niche-related processes.

scholarly journals Factors that influence the beta-diversity of spider communities in northwestern Argentinean Grasslands

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e1946 ◽  
Author(s):  
Sandra M. Rodriguez-Artigas ◽  
Rodrigo Ballester ◽  
Jose A. Corronca
Keyword(s):  
Beta Diversity ◽  
Environmental Variables ◽  
Regional Scale ◽  
Geographic Distance ◽  
Species Replacement ◽  
Community Similarity ◽  
Dispersal Capacity ◽  
Assembly Structure ◽  
Dispersion Capacity ◽  
Spider Communities

Beta-diversity, defined as spatial replacement in species composition, is crucial to the understanding of how local communities assemble. These changes can be driven by environmental or geographic factors (such as geographic distance), or a combination of the two. Spiders have been shown to be good indicators of environmental quality. Accordingly, spiders are used in this work as model taxa to establish whether there is a decrease in community similarity that corresponds to geographic distance in the grasslands of the Campos & Malezales ecoregion (Corrientes). Furthermore, the influence of climactic factors and local vegetation heterogeneity (environmental factors) on assemblage composition was evaluated. Finally, this study evaluated whether the differential dispersal capacity of spider families is a factor that influences their community structure at a regional scale. Spiders were collected with a G-Vac from vegetation in six grassland sites in the Campos & Malezales ecoregion that were separated by a minimum of 13 km. With this data, the impact of alpha-diversity and different environmental variables on the beta-diversity of spider communities was analysed. Likewise, the importance of species replacement and nesting on beta-diversity and their contribution to the regional diversity of spider families with different dispersion capacities was evaluated. The regional and site-specific inventories obtained were complete. The similarity between spider communities declined as the geographic distance between sites increased. Environmental variables also influenced community composition; stochastic events and abiotic forces were the principal intervening factors in assembly structure. The differential dispersal capacity of spider groups also influenced community structure at a regional scale. The regional beta-diversity, as well as species replacement, was greater in high and intermediate vagility spiders; while nesting was greater in spiders with low dispersion capacity. Geographic distance, among other factors (climate, and active and passive dispersion capacity), explains assembly structure and the decrease spider community similarity between geographically distant sites. Spiders with the highest dispersal capacity showed greater species replacement. This may be due to the discontinuity (both natural and anthropic) of the grasslands in this ecoregion, which limits the dispersal capacity of these spiders, and their close dependence on microhabitats. The dispersal capacity of the least vagile spiders is limited by geographic distance and biotic factors, such as competition, which could explain the nesting observed between their communities.

scholarly journals A newly developed dispersal metric indicates the succession of benthic invertebrates in restored rivers

2016 ◽  
Author(s):  
Fengqing Li ◽  
Andrea Sundermann ◽  
Stefan Stoll ◽  
Peter Haase
Keyword(s):  
Benthic Invertebrates ◽  
Adult Life ◽  
Benthic Invertebrate ◽  
Early Years ◽  
First Year ◽  
Dispersal Capacity ◽  
Invertebrate Communities ◽  
Temporal Succession ◽  
Community Data ◽  
Benthic Invertebrate Communities

Dispersal capacity plays a fundamental role in the riverine benthic invertebrate colonization of new habitats that emerges following flash floods or restoration. However, an appropriate measure of dispersal capacity for benthic invertebrates is still lacking. The dispersal of benthic invertebrates occurs mainly during the aquatic (larval) and aerial (adult) life stages, and the dispersal of each stage can be further subdivided into active and passive modes. Based on these four possible dispersal modes, we first developed a metric (which is very similar to the well-known and widely used saprobic index) to estimate the dispersal capacity for 528 benthic invertebrate taxa by incorporating a weight for each mode. Second, we tested this metric using benthic invertebrate community data from a) 23 large restored river sites with improvements of river bottom habitats dating back 1 to 10 years, b) 23 unrestored sites, and c) 298 adjacent surrounding sites in the low mountain and lowland areas of Germany. We hypothesize that our metric will reflect the temporal succession process of benthic invertebrate communities colonizing the restored sites, whereas no temporal changes are expected in the unrestored and surrounding sites. By applying our metric to these three river treatment categories, we found that the average dispersal capacity of benthic invertebrate communities in the restored sites significantly decreased in the early years following restoration, whereas there were no changes in either the unrestored or the surrounding sites. After all taxa had been divided into quartiles representing weak to strong dispersers, this pattern became even more obvious; strong dispersers colonized the restored sites during the first year after restoration and then significantly decreased over time, whereas weak dispersers continued to increase. The successful application of our metric to river restoration might be promising in further applications of this metric, for example, in assessments of rivers or metacommunity structure.

scholarly journals Climate and regional beta-diversity gradients in spiders: dispersal capacity has nothing to say?

2010 ◽  
Vol 3 (1) ◽  
pp. 51-60 ◽  
Author(s):  
ALBERTO JIMÉNEZ-VALVERDE ◽  
ANDRÉS BASELGA ◽  
ANTONIO MELIC ◽  
NAYRA TXASKO
Keyword(s):  
Beta Diversity ◽  
Dispersal Capacity ◽  
Diversity Gradients

scholarly journals Fish beta diversity responses to environmental heterogeneity and flood pulses are different according to reproductive guild

2018 ◽  
Vol 16 (4) ◽  
Author(s):  
Ángela Gutiérrez C ◽  
Jean Carlo Gonçalves Ortega ◽  
Angelo Antonio Agostinho
Keyword(s):  
Parental Care ◽  
Beta Diversity ◽  
Environmental Heterogeneity ◽  
Linear Models ◽  
Fish Assemblages ◽  
Generalized Least Squares ◽  
The Other ◽  
Dispersal Capacity ◽  
Reproductive Guilds ◽  
Reproductive Guild

ABSTRACT In floodplain communities, beta diversity is influenced by different factors; however, environmental heterogeneity and floods are believed to be particularly influential. The influence of environmental heterogeneity and floods on beta diversity may vary among guilds that present different ecological traits. This study evaluated the correlation between the environmental heterogeneity and flood periods and the beta diversity of trophic and reproductive guilds of fish assemblages. Sampling was conducted quarterly between 2000 and 2012 in the upper Paraná River floodplain. The environmental heterogeneity and period (i.e., dry or flood) were associated with the beta diversity of each guild based on the results of generalized least squares linear models. Only guilds with parental care were influenced by the interaction between environmental heterogeneity and period. The beta diversity of the other guilds presented no relationship between environmental heterogeneity and period. It is likely that species with parental care presented less dispersal capacity, which increased the dissimilarity among assemblages. The higher dispersion rates of the other guilds may be responsible for the lack of relationship between the beta diversity and the environmental heterogeneity and period. In sum, these results suggest that reproductive guilds influence how environmental heterogeneity and floods affect beta diversity variation.

scholarly journals A newly developed dispersal capacity metric indicates succession of benthic invertebrates in restored rivers

2015 ◽  
Author(s):  
Fengqing Li ◽  
Andrea Sundermann ◽  
Stefan Stoll ◽  
Peter Haase
Keyword(s):  
Benthic Invertebrates ◽  
Adult Life ◽  
Benthic Invertebrate ◽  
Early Years ◽  
First Year ◽  
Dispersal Capacity ◽  
Invertebrate Communities ◽  
Temporal Succession ◽  
Community Data ◽  
Benthic Invertebrate Communities

Dispersal capacity plays a fundamental role in riverine benthic invertebrates’ colonization of new habitats that emerge following flash floods or restoration. However, an appropriate measure of dispersal capacity for benthic invertebrates is still lacking. Dispersal of benthic invertebrates occurs mainly during the aquatic (larvae) and aerial (adult) life stages, and each can be further subdivided into active and passive modes. Based on these totally four dispersal modes, we firstly developed a simple metric to estimate dispersal capacity for 528 benthic invertebrate taxa by incorporating weight for each mode. Secondly we tested this metric using benthic invertebrate community data from a) 23 restored river sites all involving an improvement of river bottom habitats dating back 1 to 10 years, b) 23 unrestored sites, and c) 298 adjacent surrounding sites in the low mountain and lowland areas of Germany. We hypothesize that our metric will reflect the temporal succession process of benthic invertebrate communities colonizing the restored sites, while no temporal changes are expected in the unrestored and surrounding sites. By applying our metric to these three river treatment categories, we found that the average dispersal capacity of benthic invertebrate communities in the restored sites decreased significantly within the early years following restoration, while there were no changes in both unrestored and surrounding sites. After dividing all taxa into quartiles representing weak to strong dispersers, this pattern became even more obvious; strong dispersers colonized the restored sites during the first year after restoration and then significantly decreased over time, while weak dispersers continuously increased. The successful application of our metric to river restoration might be promising to further apply this metric for example in river assessments or meta-community structure.

scholarly journals A newly developed dispersal metric indicates the succession of benthic invertebrates in restored rivers

2016 ◽  
Author(s):  
Fengqing Li ◽  
Andrea Sundermann ◽  
Stefan Stoll ◽  
Peter Haase
Keyword(s):  
Benthic Invertebrates ◽  
Adult Life ◽  
Benthic Invertebrate ◽  
Early Years ◽  
First Year ◽  
Dispersal Capacity ◽  
Invertebrate Communities ◽  
Temporal Succession ◽  
Community Data ◽  
Benthic Invertebrate Communities

Dispersal capacity plays a fundamental role in the riverine benthic invertebrate colonization of new habitats that emerges following flash floods or restoration. However, an appropriate measure of dispersal capacity for benthic invertebrates is still lacking. The dispersal of benthic invertebrates occurs mainly during the aquatic (larval) and aerial (adult) life stages, and the dispersal of each stage can be further subdivided into active and passive modes. Based on these four possible dispersal modes, we first developed a metric (which is very similar to the well-known and widely used saprobic index) to estimate the dispersal capacity for 528 benthic invertebrate taxa by incorporating a weight for each mode. Second, we tested this metric using benthic invertebrate community data from a) 23 large restored river sites with improvements of river bottom habitats dating back 1 to 10 years, b) 23 unrestored sites, and c) 298 adjacent surrounding sites in the low mountain and lowland areas of Germany. We hypothesize that our metric will reflect the temporal succession process of benthic invertebrate communities colonizing the restored sites, whereas no temporal changes are expected in the unrestored and surrounding sites. By applying our metric to these three river treatment categories, we found that the average dispersal capacity of benthic invertebrate communities in the restored sites significantly decreased in the early years following restoration, whereas there were no changes in either the unrestored or the surrounding sites. After all taxa had been divided into quartiles representing weak to strong dispersers, this pattern became even more obvious; strong dispersers colonized the restored sites during the first year after restoration and then significantly decreased over time, whereas weak dispersers continued to increase. The successful application of our metric to river restoration might be promising in further applications of this metric, for example, in assessments of rivers or metacommunity structure.

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