Legacy of post-glacial colonization affects β-diversity: Insights into local community assembly processes

2018 ◽  
Vol 45 (7) ◽  
pp. 1604-1615 ◽  
Author(s):  
Jan Douda ◽  
Alena Havrdová ◽  
Jana Doudová ◽  
Bohumil Mandák
Keyword(s):  
Community Assembly ◽  
Local Community ◽  
Β Diversity

scholarly journals Local community assembly mechanisms shape soil bacterial β diversity patterns along a latitudinal gradient

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Xiao Zhang ◽  
Shirong Liu ◽  
Jingxin Wang ◽  
Yongtao Huang ◽  
Zachary Freedman ◽  
...  
Keyword(s):  
Community Assembly ◽  
Latitudinal Gradient ◽  
Local Community ◽  
Eastern China ◽  
Diversity Patterns ◽  
Geographical Patterns ◽  
Β Diversity ◽  
Species Pools ◽  
Regional Species Pool ◽  
Soil Bacterial

Abstract Biodiversity patterns across geographical gradients could result from regional species pool and local community assembly mechanisms. However, little has been done to separate the effects of local ecological mechanisms from variation in the regional species pools on bacterial diversity patterns. In this study, we compare assembly mechanisms of soil bacterial communities in 660 plots from 11 regions along a latitudinal gradient in eastern China with highly divergent species pools. Our results show that β diversity does not co-vary with γ diversity, and local community assembly mechanisms appear to explain variation in β diversity patterns after correcting for variation in regional species pools. The variation in environmental conditions along the latitudinal gradient accounts for the variation in β diversity through mediating the strength of heterogeneous selection. In conclusion, our study clearly illustrates the importance of local community assembly processes in shaping geographical patterns of soil bacterial β diversity.

Local community assembly processes shape β‐diversity of soil phoD ‐harbouring communities in the Northern Hemisphere steppes

2021 ◽  
Vol 30 (11) ◽  
pp. 2273-2285
Author(s):  
Lin Xu ◽  
Nianpeng He ◽  
Xiangzhen Li ◽  
Huili Cao ◽  
Chaonan Li ◽  
...  
Keyword(s):  
Northern Hemisphere ◽  
Community Assembly ◽  
Local Community ◽  
Β Diversity

scholarly journals Elevational Gradients in β-Diversity Reflect Variation in the Strength of Local Community Assembly Mechanisms across Spatial Scales

PLoS ONE ◽  
2015 ◽  
Vol 10 (3) ◽  
pp. e0121458 ◽  
Author(s):  
J. Sebastián Tello ◽  
Jonathan A. Myers ◽  
Manuel J. Macía ◽  
Alfredo F. Fuentes ◽  
Leslie Cayola ◽  
...  
Keyword(s):  
Community Assembly ◽  
Local Community ◽  
Spatial Scales ◽  
Elevational Gradients ◽  
Β Diversity

scholarly journals Chemical similarity and local community assembly in the species rich tropical genus Piper

Ecology ◽  
2016 ◽  
Vol 97 (11) ◽  
pp. 3176-3183 ◽  
Author(s):  
Diego Salazar ◽  
M. Alejandra Jaramillo ◽  
Robert J. Marquis
Keyword(s):  
Community Assembly ◽  
Local Community ◽  
Chemical Similarity

scholarly journals Genome size mediates the effect of environmental filtering in determining plant β-diversity across temperate grasslands

2021 ◽  
Author(s):  
Hai-Yang Zhang ◽  
Xiaotao Lü ◽  
cunzheng wei ◽  
Jeff Powell ◽  
Xiaobo Wang ◽  
...  
Keyword(s):  
Genome Size ◽  
Community Assembly ◽  
Nuclear Dna ◽  
Environmental Filtering ◽  
Nuclear Dna Content ◽  
Mean Annual Precipitation ◽  
Mean Annual Temperature ◽  
Nitrogen And Phosphorus ◽  
Temperate Grasslands ◽  
Β Diversity

Elucidating mechanisms underlying community assembly and biodiversity patterns is central to ecology and evolution. Genome size (GS, i.e. nuclear DNA content) determines species’ capacity to tolerate environmental stress or to exploit new environments and therefore potentially drive community assembly. However, its role in driving β-diversity (i.e., the site-to-site variability in species composition) remains unclear. We measured GS for 169 plant species and investigated their occurrences within plant communities across 52 sites spanning a 3200-km transect in the temperate grasslands of China. We found environmental factors showed larger effects on β-diversity of large-GS than that of small-GS species. Community weighted mean GS increased with mean annual precipitation, soil total nitrogen and phosphorus concentrations, but decreased with mean annual temperature, suggesting a negative selection against species with large GS in resources-limited or warmer climates. These findings highlight the roles for GS in driving community assembly and predicting species responses to climate change.

Integrating biogeographical processes and local community assembly

2012 ◽  
Vol 39 (4) ◽  
pp. 627-628 ◽  
Author(s):  
Joaquín Hortal ◽  
Paulo De Marco Jr ◽  
Ana M. C. Santos ◽  
J . Alexandre F. Diniz-Filho
Keyword(s):  
Community Assembly ◽  
Local Community

scholarly journals Dissecting macroecological and macroevolutionary patterns of forest biodiversity across the Hawaiian archipelago

2019 ◽  
Vol 116 (33) ◽  
pp. 16436-16441 ◽  
Author(s):  
Dylan Craven ◽  
Tiffany M. Knight ◽  
Kasey E. Barton ◽  
Lalasia Bialic-Murphy ◽  
Jonathan M. Chase
Keyword(s):  
Species Diversity ◽  
Community Assembly ◽  
Native Species ◽  
Local Community ◽  
Regional Scale ◽  
Oceanic Islands ◽  
Local Scale ◽  
Hawaiian Archipelago ◽  
Biodiversity Patterns ◽  
Island Area

Biodiversity patterns emerge as a consequence of evolutionary and ecological processes. Their relative importance is frequently tested on model ecosystems such as oceanic islands that vary in both. However, the coarse-scale data typically used in biogeographic studies have limited inferential power to separate the effects of historical biogeographic factors (e.g., island age) from the effects of ecological ones (e.g., island area and habitat heterogeneity). Here, we describe local-scale biodiversity patterns of woody plants using a database of more than 500 forest plots from across the Hawaiian archipelago, where these volcanic islands differ in age by several million years. We show that, after controlling for factors such as island area and heterogeneity, the oldest islands (Kaua’i and O’ahu) have greater native species diversity per unit area than younger islands (Maui and Hawai’i), indicating an important role for macroevolutionary processes in driving not just whole-island differences in species diversity, but also local community assembly. Further, we find that older islands have a greater number of rare species that are more spatially clumped (i.e., higher within-island β-diversity) than younger islands. When we included alien species in our analyses, we found that the signal of macroevolutionary processes via island age was diluted. Our approach allows a more explicit test of the question of how macroevolutionary factors shape not just regional-scale biodiversity, but also local-scale community assembly patterns and processes in a model archipelago ecosystem, and it can be applied to disentangle biodiversity drivers in other systems.

α and β diversity of fishes in relation to a gradient of habitat structural complexity supports the role of environmental filtering in community assembly

2019 ◽  
Vol 81 (2) ◽  
Author(s):  
Eduardo R. Cunha ◽  
Kirk O. Winemiller ◽  
João C. B. da Silva ◽  
Taise M. Lopes ◽  
Luiz C. Gomes ◽  
...  
Keyword(s):  
Community Assembly ◽  
Environmental Filtering ◽  
Structural Complexity ◽  
Β Diversity

scholarly journals Beta diversity differs among hydrothermal vent systems: Implications for conservation

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0256637
Author(s):  
Thomas N. Giguère ◽  
Verena Tunnicliffe
Keyword(s):  
Community Assembly ◽  
Hydrothermal Vent ◽  
Null Model ◽  
Conservation Strategy ◽  
Distribution Data ◽  
Β Diversity ◽  
Mid Ocean Ridge ◽  
Management Approaches ◽  
Back Arc ◽  
Ocean Ridge

Deep-sea hydrothermal vent habitats are small, rare and support unique species through chemosynthesis. As this vulnerable ecosystem is increasingly threatened by human activities, management approaches should address biodiversity conservation. Diversity distribution data provide a useful basis for management approaches as patterns of β-diversity (the change in diversity from site to site) can guide conservation decisions. Our question is whether such patterns are similar enough across vent systems to support a conservation strategy that can be deployed regardless of location. We compile macrofaunal species occurrence data for vent systems in three geological settings in the North Pacific: volcanic arc, back-arc and mid-ocean ridge. Recent discoveries in the Mariana region provide the opportunity to characterize diversity at many vent sites. We examine the extent to which diversity distribution patterns differ among the systems by comparing pairwise β-diversity, nestedness and their additive components. A null model approach that tests whether species compositions of each site pair are more or less similar than random provides insight into community assembly processes. We resolve several taxonomic uncertainties and find that the Mariana arc and back-arc share only 8% of species despite their proximity. Species overlap, species replacement and richness differences create different diversity distributions within the three vent systems; the arc system exhibits much greater β-diversity than both the back-arc and mid-ocean ridge systems which, instead, show greater nestedness. The influence of nestedness on β-diversity also increased from the arc to back-arc to ridge. Community assembly processes appear more deterministic in the arc and ridge systems while back-arc site pairs deviate little from the null expectation. These analyses reflect the need for a variety of management strategies that consider the character of diversity distribution to protect hydrothermal vents, especially in the context of mining hydrothermal deposits.

scholarly journals Dietary Fiber Influences Bacterial Community Assembly Processes in the Gut Microbiota of Durco × Bamei Crossbred Pig

2021 ◽  
Vol 12 ◽  
Author(s):  
Xianjiang Tang ◽  
Liangzhi Zhang ◽  
Chao Fan ◽  
Lei Wang ◽  
Haibo Fu ◽  
...  
Keyword(s):  
Bacterial Community ◽  
Dietary Fiber ◽  
Community Assembly ◽  
Cecal Content ◽  
High Fiber ◽  
Β Diversity ◽  
Composition And Structure ◽  
Α Diversity ◽  
Deterministic Processes ◽  
Crossbred Pigs

Several studies have shown that dietary fiber can significantly alter the composition and structure of the gut bacterial community in humans and mammals. However, few researches have been conducted on the dynamics of the bacterial community assembly across different graded levels of dietary fiber in different gut regions. To address this, 24 Durco × Bamei crossbred pigs were randomly assigned to four experimental chows comprising graded levels of dietary fiber. Results showed that the α-and β-diversity of the bacterial community was significantly different between the cecum and the jejunum. Adding fiber to the chow significantly increased the α-diversity of the bacterial community in the jejunum and cecum, while the β-diversity decreased. The complexity of the bacterial network increased with the increase of dietary fiber in jejunal content samples, while it decreased in cecal content samples. Furthermore, we found that stochastic processes governed the bacterial community assembly of low and medium dietary fiber groups of jejunal content samples, while deterministic processes dominated the high fiber group. In addition, deterministic processes dominated all cecal content samples. Taken together, the variation of gut community composition and structure in response to dietary fiber was distinct in different gut regions, and the dynamics of bacterial community assembly across the graded levels of dietary fiber in different gut regions was also distinct. These findings enhanced our knowledge on the bacterial community assembly processes in gut ecosystems of livestock.

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