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• W3039538270 abstract "Abstract Several key processes in freshwater ecology are governed by the connectivity inherent to dendritic river networks. These have extensively been analyzed from a geomorphological and hydrological viewpoint, yet structures classically used in ecological modeling have been poorly representative of the structure of real river basins, often failing to capture well‐known scaling features of natural rivers. Pioneering work identified optimal channel networks (OCNs) as spanning trees reproducing all scaling features characteristic of natural stream networks worldwide. While OCNs have been used to create landscapes for studies on metapopulations, biodiversity, and epidemiology, their generation has not been generally accessible. Given the increasing interest in dendritic riverine networks by ecologists and evolutionary biologists, we here present a method to generate OCNs and, to facilitate its application, we provide the R‐package OCNet . Owing to the stochastic process generating OCNs, multiple network replicas spanning the same surface can be built; this allows performing computational experiments whose results are irrespective of the particular shape of a single river network. The OCN construct also enables the generation of elevational gradients derived from the optimal network configuration, which can constitute three‐dimensional landscapes for spatial studies in both terrestrial and freshwater realms. Moreover, the package provides functions that aggregate OCNs into an arbitrary number of nodes, calculate several descriptors of river networks, and draw relevant network features. We describe the main functionalities of the package and its integration with other R‐packages commonly used in spatial ecology. Moreover, we exemplify the generation of OCNs and discuss an application to a metapopulation model for an invasive riverine species. In conclusion, OCNet provides a powerful tool to generate realistic river network analogues for various applications. It thereby allows the design of spatially realistic studies in increasingly impacted ecosystems and enhances our knowledge on spatial processes in freshwater ecology in general." @default.
• W3039538270 created "2020-07-10" @default.
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• W3039538270 date "2020-06-30" @default.
• W3039538270 modified "2023-10-15" @default.
• W3039538270 title "Generation and application of river network analogues for use in ecology and evolution" @default.
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• W3039538270 doi "https://doi.org/10.1002/ece3.6479" @default.
• W3039538270 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7391543" @default.
• W3039538270 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32760547" @default.
• W3039538270 hasPublicationYear "2020" @default.
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