Time and habitat structure shape insect acoustic activity in the Amazon

Author:

Do Nascimento Leandro A.1ORCID,Pérez-Granados Cristian2ORCID,Alencar Janderson B. Rodrigues3ORCID,Beard Karen H.4ORCID

Affiliation:

1. Science Department, Biometrio.Earth, 66123 Saarbrücken, Germany

2. Ecology Department, Alicante University, 03690 Alicante, Spain

3. Instituto Nacional de Pesquisas da Amazônia, Programa de Pós-Graduação em Ciências Biológicas (Entomologia), 69067-375 Manaus, Amazonas, Brazil

4. Department of Wildland Resources and Ecology Center, Utah State University, 84322-5230 Logan, UT, USA

Abstract

Insects are the most diverse animal taxon on Earth and play a key role in ecosystem functioning. However, they are often neglected by ecological surveys owing to the difficulties involved in monitoring this small and hyper-diverse taxon. With technological advances in biomonitoring and analytical methods, these shortcomings may finally be addressed. Here, we performed passive acoustic monitoring at 141 sites (eight habitats) to investigate insect acoustic activity in the Viruá National Park, Brazil. We first describe the frequency range occupied by three soniferous insect groups (cicadas, crickets and katydids) to calculate the acoustic evenness index (AEI). Then, we assess how AEI varies spatially and temporally among habitat types, and finally we investigate the relationship between vegetation structure variables and AEI for each insect category. Overall, crickets occupied lower and narrower frequency bands than cicadas and katydids. AEI values varied among insect categories and across space and time. The highest acoustic activity occurred before sunrise and the lowest acoustic activity was recorded in pastures. Canopy cover was positively associated with cricket acoustic activity but not with katydids. Our findings contribute to a better understanding of the role of time, habitat and vegetation structure in shaping insect activity within diverse Amazonian ecosystems. This article is part of the theme issue ‘Towards a toolkit for global insect biodiversity monitoring’.

Funder

Rufford Foundation

Ciência sem Fronteiras

Ecology Center, USU

Publisher

The Royal Society

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Habitat niches of bird species along a recovery gradient in the Chocó tropical forest;Ecological Indicators;2024-09

2. Towards a toolkit for global insect biodiversity monitoring;Philosophical Transactions of the Royal Society B: Biological Sciences;2024-05-06

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