Acoustic communities reflects lateral hydrological connectivity in riverine floodplain similarly to macroinvertebrate communities

Recent studies revealed that information on ecological patterns and processes can be investigated using sounds emanating from animal communities. In freshwater environments, animal communities are strongly shaped by key ecological factors such as lateral connectivity and temperature. We predict that...

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Bibliographic Details
Published in:Scientific reports 2018-09, Vol.8 (1), p.14387-11, Article 14387
Main Authors: Desjonquères, Camille, Rybak, Fanny, Castella, Emmanuel, Llusia, Diego, Sueur, Jérôme
Format: Article
Language:English
Subjects:
631/158/2459
631/158/670
631/158/853
Acoustics
Biodiversity and Ecology
Community composition
Environmental Sciences
Floodplains
Freshwater ecology
Freshwater environments
Humanities and Social Sciences
Macroinvertebrates
multidisciplinary
Rivers
Sampling methods
Science
Science (multidisciplinary)
Temperature effects
Underwater
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Summary:Recent studies revealed that information on ecological patterns and processes can be investigated using sounds emanating from animal communities. In freshwater environments, animal communities are strongly shaped by key ecological factors such as lateral connectivity and temperature. We predict that those ecological factors are linked to acoustic communities formed by the collection of sounds emitted underwater. To test this prediction, we deployed a passive acoustic monitoring during 15 days in six floodplain channels of the European river Rhône. The six channels differed in their temperature and level of lateral connectivity to the main river. In parallel, we assessed the macroinvertebrate communities of these six channels using classical net sampling methods. A total of 128 sound types and 142 animal taxa were inventoried revealing an important underwater diversity. This diversity, instead of being randomly distributed among the six floodplain channels, was site-specific. Generalized mixed-effects models demonstrated a strong effect of both temperature and lateral connectivity on acoustic community composition. These results, congruent with macroinvertebrate community composition, suggest that acoustic communities reflect the interactions between animal communities and their environment. Overall our study strongly supports the perspectives offered by acoustic monitoring to describe and understand ecological patterns in freshwater environments.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-018-31798-4