Publication Details |
| Category | Text Publication |
| Reference Category | Journals |
| DOI | 10.1002/lno.70385 |
Licence  |
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| Title (Primary) | Linking hydromorphological diversity to biodiversity and functioning in running waters |
| Author | Anlanger, C.; Noss, C.; Risse-Buhl, U.; Brauns, M.; von Schiller, D.; Weitere, M.; Lorke, A. |
| Source Titel | Limnology and Oceanography |
| Year | 2026 |
| Department | FLOEK |
| Volume | 71 |
| Issue | 5 |
| Page From | e70385 |
| Language | englisch |
| Topic | T5 Future Landscapes |
| Data and Software links | https://doi.org/10.5281/zenodo.19371976 |
| Supplements | Supplement 1 |
| Abstract | Environmental heterogeneity is a key driver of biodiversity and ecosystem functioning, yet linking physical habitat variability to ecological attributes remains challenging in aquatic ecosystems. Here, we present a unified framework that applies variance partitioning to hydromorphological characteristics—specifically flow velocity and depth—to quantify habitat heterogeneity across spatial and temporal scales. Drawing on field data from two gravel-bed streams, we decompose physical variability into α (local), β (between habitat), and γ (total) components and relate these to the diversity of microbial biofilms and nitrogen uptake. We find that β diversity—representing spatial variability among mesohabitats—dominates both hydromorphological and biological γ diversity. The diversity of autotrophs and phagotrophic protists increased significantly with flow β diversity, whereas bacterial diversity was unresponsive to flow heterogeneity. Functional diversity, measured as spatial variability in nitrogen uptake efficiency, also increased with flow β diversity but was unrelated to local turbulence (α diversity). These findings highlight the central role of habitat-scale flow structure in shaping biodiversity and function in stream ecosystems. The proposed physically grounded, scale-explicit framework provides a transferable tool for assessing ecological responses to habitat heterogeneity and offers a quantitative basis for guiding restoration and conservation. |
| Anlanger, C., Noss, C., Risse-Buhl, U., Brauns, M., von Schiller, D., Weitere, M., Lorke, A. (2026): Linking hydromorphological diversity to biodiversity and functioning in running waters Limnol. Oceanogr. 71 (5), e70385 10.1002/lno.70385 |
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