Intrinsic ecological dynamics drive biodiversity turnover in model metacommunities

O’Sullivan, Jacob D.; Terry, J. Christopher D.; Rossberg, Axel G.

doi:10.1038/s41467-021-23769-7

Cited by 32 publications

(36 citation statements)

References 87 publications

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“…However, they found the same reduction in nestedness between pairs of sites. Given that changes in the spatial structure of dissimilarities in our study were driven by both losses and gains in species richness, and those were not driven by LULC or climate changes to any great extent (see below), it appears that some of this assemblage change might be stochastic (Baselga et al, 2015;O'Sullivan et al, 2021;Stegen et al, 2013) or perhaps attributable to inappropriate or missing covariates. For example, the increases in distribution of the buzzard are likely to be attributable to enhanced protection.…”

Section: F I G U R Ementioning

confidence: 86%

Assessing taxonomic and functional change in British breeding bird assemblages over time

Wayman

Sadler

Pugh

et al. 2022

Global Ecol Biogeogr

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Section: F I G U R Ementioning

confidence: 86%

Assessing taxonomic and functional change in British breeding bird assemblages over time

Wayman

Sadler

Pugh

et al. 2022

Global Ecol Biogeogr

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“…Therefore, the emergent phases of diversity and dynamics that we observed here may occur in a wide range of ecological communities. Future work should strive to determine whether these emergent phases generalize across spatiotemporal scales, environmental conditions and organism types, to understand their prevalence and importance in shaping major ecological patterns (45). given the same interspecies interaction strength <αij>=0.3.…”

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confidence: 99%

Emergent phases of ecological diversity and dynamics mapped in microcosms

Amor

Barbier

et al. 2021

Preprint

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Natural ecological communities display striking features, such as high biodiversity and a wide range of dynamics, that have been difficult to explain in a unified framework. Using experimental bacterial microcosms, we perform the first direct test of recent complex systems theory predicting that simple aggregate parameters dictate emergent behaviors of the community. As either the number of species or the strength of species interactions is increased, we show that microbial ecosystems transition between distinct qualitative dynamical phases in the predicted order, from a stable equilibrium where all species coexist, to partial coexistence, to emergence of persistent fluctuations in species abundance. Under the same conditions, high biodiversity and fluctuations allow and require each other. Our results demonstrate predictable emergent diversity and dynamics in ecological communities.One-Sentence SummaryA phase diagram of ecological dynamics and diversity as a function of coarse-grained features of species interaction network.

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“…It is quite remarkable that the inclusion of space even with homogeneous patches and without external forcing is sufficient for dynamic spatial heterogeneity to emerge in the GLV, including regimes of stable global abundances and persistent local abundance fluctuations. High diversity meta-communities have been shown to also display local species turn-over in absence of external influence [ 40 ]. The fact that undisturbed high diversity meta-communities have such a wealth of dynamical behaviour can have a large impact on biological monitoring.…”

Section: Discussionmentioning

confidence: 99%

Spatial heterogeneity enhance robustness of large multi-species ecosystems

Pettersson

Jacobi

2021

PLoS Comput Biol

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Understanding ecosystem stability and functioning is a long-standing goal in theoretical ecology, with one of the main tools being dynamical modelling of species abundances. With the help of spatially unresolved (well-mixed) population models and equilibrium dynamics, limits to stability and regions of various ecosystem robustness have been extensively mapped in terms of diversity (number of species), types of interactions, interaction strengths, varying interaction networks (for example plant-pollinator, food-web) and varying structures of these networks. Although many insights have been gained, the impact of spatial extension is not included in this body of knowledge. Recent studies of spatially explicit modelling on the other hand have shown that stability limits can be crossed and diversity increased for systems with spatial heterogeneity in species interactions and/or chaotic dynamics. Here we show that such crossing and diversity increase can appear under less strict conditions. We find that the mere possibility of varying species abundances at different spatial locations make possible the preservation or increase in diversity across previous boundaries thought to mark catastrophic transitions. In addition, we introduce and make explicit a multitude of different dynamics a spatially extended complex system can use to stabilise. This expanded stabilising repertoire of dynamics is largest at intermediate levels of dispersal. Thus we find that spatially extended systems with intermediate dispersal are more robust, in general have higher diversity and can stabilise beyond previous stability boundaries, in contrast to well-mixed systems.

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Intrinsic ecological dynamics drive biodiversity turnover in model metacommunities

Cited by 32 publications

References 87 publications

Assessing taxonomic and functional change in British breeding bird assemblages over time

Assessing taxonomic and functional change in British breeding bird assemblages over time

Emergent phases of ecological diversity and dynamics mapped in microcosms

Spatial heterogeneity enhance robustness of large multi-species ecosystems

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