Emergent dispersal networks in dynamic wetlandscapes
Abstract The connectivity among distributed wetlands is critical for aquatic habitat integrity and to maintain metapopulation biodiversity. Here, we investigated the spatiotemporal fluctuations of wetlandscape connectivity driven by stochastic hydroclimatic forcing, conceptualizing wetlands as dynam...
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2020-09-01
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Online Access: | https://doi.org/10.1038/s41598-020-71739-8 |
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doaj-fb26537a176e4df3b61134108b8d412d2021-09-12T11:20:27ZengNature Publishing GroupScientific Reports2045-23222020-09-0110111010.1038/s41598-020-71739-8Emergent dispersal networks in dynamic wetlandscapesLeonardo E. Bertassello0Antoine F. Aubeneau1Gianluca Botter2James W. Jawitz3P. S. C. Rao4Lyles School of Civil Engineering, Purdue UniversityLyles School of Civil Engineering, Purdue UniversityDepartment of Civil, Architectural and Environmental Engineering, University of PaduaSoil and Water Sciences Department, University of FloridaLyles School of Civil Engineering, Purdue UniversityAbstract The connectivity among distributed wetlands is critical for aquatic habitat integrity and to maintain metapopulation biodiversity. Here, we investigated the spatiotemporal fluctuations of wetlandscape connectivity driven by stochastic hydroclimatic forcing, conceptualizing wetlands as dynamic habitat nodes in dispersal networks. We hypothesized that spatiotemporal hydrologic variability influences the heterogeneity in wetland attributes (e.g., size and shape distributions) and wetland spatial organization (e.g., gap distances), in turn altering the variance of the dispersal network topology and the patterns of ecological connectivity. We tested our hypotheses by employing a DEM-based, depth-censoring approach to assess the eco-hydrological dynamics in a synthetically generated landscape and three representative wetlandscapes in the United States. Network topology was examined for two end-member connectivity measures: centroid-to-centroid (C2C), and perimeter-to-perimeter (P2P), representing the full range of within-patch habitat preferences. Exponentially tempered Pareto node-degree distributions well described the observed structural connectivity of both types of networks. High wetland clustering and attribute heterogeneity exacerbated the differences between C2C and P2P networks, with Pareto node-degree distributions emerging only for a limited range of P2P configuration. Wetlandscape network topology and dispersal strategies condition species survival and biodiversity.https://doi.org/10.1038/s41598-020-71739-8 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Leonardo E. Bertassello Antoine F. Aubeneau Gianluca Botter James W. Jawitz P. S. C. Rao |
spellingShingle |
Leonardo E. Bertassello Antoine F. Aubeneau Gianluca Botter James W. Jawitz P. S. C. Rao Emergent dispersal networks in dynamic wetlandscapes Scientific Reports |
author_facet |
Leonardo E. Bertassello Antoine F. Aubeneau Gianluca Botter James W. Jawitz P. S. C. Rao |
author_sort |
Leonardo E. Bertassello |
title |
Emergent dispersal networks in dynamic wetlandscapes |
title_short |
Emergent dispersal networks in dynamic wetlandscapes |
title_full |
Emergent dispersal networks in dynamic wetlandscapes |
title_fullStr |
Emergent dispersal networks in dynamic wetlandscapes |
title_full_unstemmed |
Emergent dispersal networks in dynamic wetlandscapes |
title_sort |
emergent dispersal networks in dynamic wetlandscapes |
publisher |
Nature Publishing Group |
series |
Scientific Reports |
issn |
2045-2322 |
publishDate |
2020-09-01 |
description |
Abstract The connectivity among distributed wetlands is critical for aquatic habitat integrity and to maintain metapopulation biodiversity. Here, we investigated the spatiotemporal fluctuations of wetlandscape connectivity driven by stochastic hydroclimatic forcing, conceptualizing wetlands as dynamic habitat nodes in dispersal networks. We hypothesized that spatiotemporal hydrologic variability influences the heterogeneity in wetland attributes (e.g., size and shape distributions) and wetland spatial organization (e.g., gap distances), in turn altering the variance of the dispersal network topology and the patterns of ecological connectivity. We tested our hypotheses by employing a DEM-based, depth-censoring approach to assess the eco-hydrological dynamics in a synthetically generated landscape and three representative wetlandscapes in the United States. Network topology was examined for two end-member connectivity measures: centroid-to-centroid (C2C), and perimeter-to-perimeter (P2P), representing the full range of within-patch habitat preferences. Exponentially tempered Pareto node-degree distributions well described the observed structural connectivity of both types of networks. High wetland clustering and attribute heterogeneity exacerbated the differences between C2C and P2P networks, with Pareto node-degree distributions emerging only for a limited range of P2P configuration. Wetlandscape network topology and dispersal strategies condition species survival and biodiversity. |
url |
https://doi.org/10.1038/s41598-020-71739-8 |
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