Autonomous sound recording outperforms human observation for sampling birds: a systematic map and user guide

2019 | journal article; research paper. A publication with affiliation to the University of Göttingen.

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​Autonomous sound recording outperforms human observation for sampling birds: a systematic map and user guide​
Darras, K. ; Batáry, P. ; Furnas, B. J.; Grass, I. ; Mulyani, Y. A. & Tscharntke, T. ​ (2019) 
Ecological Applications : A Publication of the Ecological Society of America, art. e01954​.​ DOI: https://doi.org/10.1002/eap.1954 

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Authors
Darras, Kevin ; Batáry, Péter ; Furnas, Brett J.; Grass, Ingo ; Mulyani, Yeni A.; Tscharntke, Teja 
Abstract
Autonomous sound recording techniques have gained considerable traction in the last decade, but the question remains whether they can replace human observation surveys to sample sonant animals. For birds in particular, survey methods have been tested extensively using point counts and sound recording surveys. Here, we review the latest evidence for this taxon within the frame of a systematic map. We compare sampling effectiveness of these two survey methods, the output variables they produce, and their practicality. When assessed against the standard of point counts, autonomous sound recording proves to be a powerful tool that samples at least as many species. This technology can monitor birds in an exhaustive, standardized, and verifiable way. Moreover, sound recorders give access to entire soundscapes from which new data types can be derived (vocal activity, acoustic indices). Variables such as abundance, density, occupancy, or species richness can be obtained to yield data sets that are comparable to and compatible with point counts. Finally, autonomous sound recorders allow investigations at high temporal and spatial resolution and coverage, which are more cost effective and cannot be achieved by human observations alone, even though small-scale studies might be more cost effective when carried out with point counts. Sound recorders can be deployed in many places, they are more scalable and reliable, making them the better choice for bird surveys in an increasingly data-driven time. We provide an overview of currently available recorders and discuss their specifications to guide future study designs.
Issue Date
2019
Journal
Ecological Applications : A Publication of the Ecological Society of America 
Project
SFB 990: Ökologische und sozioökonomische Funktionen tropischer Tieflandregenwald-Transformationssysteme (Sumatra, Indonesien) 
SFB 990 | B | B09: Oberirdische Biodiversitätsmuster und Prozesse in Regenwaldtransformations-Landschaften 
Organization
Fakultät für Agrarwissenschaften ; Department für Nutzpflanzenwissenschaften ; Abteilung Agrarökologie 
ISSN
1051-0761
Language
English
Subject(s)
sfb990_journalarticles

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