2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/24/2018 | 9:00 AM - 9:15 AM | HOW DO LANDSCAPE CONFIGURATIONS INFLUENCE THE SPATIAL DISTRIBUTION OF A HEMIMETABOLOUS AQUATIC INSECT? | 310 B
HOW DO LANDSCAPE CONFIGURATIONS INFLUENCE THE SPATIAL DISTRIBUTION OF A HEMIMETABOLOUS AQUATIC INSECT?
Recent developments such as meta-community theory have highlighted the relevance of migration as an ecological process determining community assembly. Whereas many studies have been conducted on modeling migration dynamics for terrestrial species, those of species that depend on aquatic habitats remain little understood. Therefore, we examined the role of varying landscape configurations in combination with a stream-network in structuring the distribution of a (generic) hemimetabolous aquatic insect.
We developed a dynamic, spatially explicit simulation model based on dispersal costs associated with landscape-pattern and on the ecological, demography-related processes population-growth and density-dependent emigration. The model is, therefore, applied on artificial rasters (around a static stream-network), derived from neutral landscape models, which represent a broad range of landscape scenarios. Furthermore, the spatial assemblies of habitats along streams are considered; random, clustered or linear distributions are simulated to elucidate interaction between suitable habitats and the configuration of land-cover.
We found that the effects of landscape scenarios and habitat distributions interact with the colonization success: With high fraction of evenly distributed habitats, landscape scenarios were less important than for a low fraction and/or unevenly distributed habitats.
- Dispersal
- Landscape
- Spatial
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Presenters/Authors
Lucas Streib
(), University of Koblenz-Landau, Institute for Environmental Sciences, streib@uni-landau.de;
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Henriette Heer
(), Institute for Mathematics, University Koblenz-Landau, 56070 Koblenz, Germany, heer@uni-koblenz.de;
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Mira Kattwinkel
(), Institute for Environmental Sciences, University Koblenz-Landau, 76829 Landau i. d. Pfalz, Germany, kattwinkel-mira@uni-landau.de;
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Stefan Ruzika
(), Department of Mathematics, University of Kaiserslautern, 67653 Kaiserslautern, Germany, ruzika@mathematik.uni-kl.de;
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Ralf Schäfer
(), University of Koblenz-Landau, Institute for Environmental Sciences, schaefer-ralf@uni-landau.de;
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