PreprintCited by 1Freshwater macroinvertebrate diversity and ecologySpecies Distribution and Climate ChangeFish Ecology and Management Studies

Transferability of stream benthic macroinvertebrate distribution models to drought-related conditions

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Medina Madariaga, Graciela, Nguyen, Hong Hanh, Kiesel, Jens, Peters, Kristin, Feld, Christian K, Jaehnig, Sonja C., Cambas, Yusdiel Torres·2024·Ecological Informatics

Preprint — published as 10.1016/j.ecoinf.2025.103395 · Paper page

Abstract

Freshwater ecosystems increasingly face pressures from climate change induced extreme events, like droughts, posing significant threats to biodiversity. While Species Distribution Models (SDMs) serve as vital tools for predicting species responses to environmental shifts, their transferability to novel environmental conditions, especially during and after drought remains poorly understood. In this study, we delve into the transferability of SDMs for freshwater macroinvertebrates from drought-free to drought-influenced conditions. We examine how sensitive the transferability is to traits such as tolerance scores according to their distribution along longitudinal gradients, as well as the used modelling method. We constructed and validated SDMs for freshwater macroinvertebrates in a central German catchment under drought-free conditions using four different algorithms (Generalised linear models; GLM, Spatial Stream Networks; SSN, Random Forests; RF, and Maximum Entropy; MaxEnt). We then projected these models to environmental conditions influenced by drought, and obtained their transferability by computing the difference in accuracy when predicting under drought-free and drought-influenced conditions (AUCgap). Our findings reveal a marked reduction in SDM accuracy under drought conditions, illustrating the challenges of accurately predicting species distributions into novel environmental conditions. Our results show a slightly better transferability when using SSN and RF. In addition, we observed that SDM transferability can be influenced by species tolerance, with sensitive and tolerant species presenting higher AUCgap (i.e. lower transferability). Furthermore, we found that when sensitive species were modelled using SSNs, the AUCgap was reduced. Our study underscores the limitations of SDMs in capturing species responses to drought and advocates for integrating ecologically relevant predictors and modelling methods that account for the stream connectivity to allow for robust predictions. These considerations could enhance the ability of SDMs to effectively estimate the impacts of extreme events on freshwater biodiversity.

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Authors
Medina Madariaga, G., Nguyen, H. H., Kiesel, J., Peters, K., Feld, C. K., Jaehnig, S. C., & Cambas, Y. T.
Affiliations
  • University of Duisburg-Essen (DE)
  • Christian-Albrechts-Universität zu Kiel (DE)
Venue
Ecological Informatics
Publisher
openRxiv
Published
2024-06-02
Volume
91
Pages
103395-103395
ISSN
1574-9541 (ISSN-L)
OpenAlex
W4413353704
Cited by
1
References
114
Citations by year
2025: 1
FWCI
0.53
Type
journal article
Language
en
Open access
Licence
cc-by-nc-nd
Locations
  • Ecological Informatics (publishedVersion, cc-by-nc-nd)
  • bioRxiv (Cold Spring Harbor Laboratory) (acceptedVersion, cc-by-nc-nd)
  • SSRN Electronic Journal (acceptedVersion)
  • Universitätsbibliographie, Universität Duisburg-Essen (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
Deutsche Forschungsgemeinschaft (426547801)
Topics
  • Physical Sciences › Environmental Science › Ecology › Freshwater macroinvertebrate diversity and ecology
  • Physical Sciences › Environmental Science › Ecological Modeling › Species Distribution and Climate Change
  • Physical Sciences › Environmental Science › Nature and Landscape Conservation › Fish Ecology and Management Studies
Keywords
species distribution modeling, model transferability, drought, stream macroinvertebrates, species tolerance, stream connectivity, random forest, maximum entropy, generalized linear models, climate change, freshwater biodiversity

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