| Full text | |
| Author(s): |
Romero, Gustavo Q.
[1]
;
Moi, Dieison A.
[2]
;
Nash, Liam N.
[3]
;
Antiqueira, Pablo A. P.
[1]
;
Mormul, Roger P.
[2]
;
Kratina, Pavel
[3]
Total Authors: 6
|
| Affiliation: | [1] Univ Campinas UNICAMP, Inst Biol, Dept Anim Biol, Lab Multitroph Interact & Biodivers, BR-13083862 Campinas, SP - Brazil
[2] State Univ Maringa UEM, Grad Program Ecol Inland Water Ecosyst PEA, Dept Biol DBI, Ctr Biol Sci CCB, Maringa, Parana - Brazil
[3] Queen Mary Univ London, Sch Biol & Chem Sci, Mile End Rd, London E1 4NS - England
Total Affiliations: 3
|
| Document type: | Journal article |
| Source: | BIOLOGY LETTERS; v. 17, n. 6 JUN 9 2021. |
| Web of Science Citations: | 1 |
| Abstract | |
Insect abundance and diversity are declining worldwide. Although recent research found freshwater insect populations to be increasing in some regions, there is a critical lack of data from tropical and subtropical regions. Here, we examine a 20-year monitoring dataset of freshwater insects from a subtropical floodplain comprising a diverse suite of rivers, shallow lakes, channels and backwaters. We found a pervasive decline in abundance of all major insect orders (Odonata, Ephemeroptera, Trichoptera, Megaloptera, Coleoptera, Hemiptera and Diptera) and families, regardless of their functional role or body size. Similarly, Chironomidae species richness decreased over the same time period. The main drivers of this pervasive insect decline were increased concurrent invasions of non-native insectivorous fish, water transparency and changes to water stoichiometry (i.e. N : P ratios) over time. All these drivers represent human impacts caused by reservoir construction. This work sheds light on the importance of long-term studies for a deeper understanding of human-induced impacts on aquatic insects. We highlight that extended anthropogenic impact monitoring and mitigation actions are pivotal in maintaining freshwater ecosystem integrity. (AU) | |
| FAPESP's process: | 17/26243-8 - Extreme rainfall events and their effects on the community structure and ecosystem functioning |
| Grantee: | Pablo Augusto Poleto Antiqueira |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 18/12225-0 - Unifying environmental and spatial determinants of food web structure across spatial scales |
| Grantee: | Gustavo Quevedo Romero |
| Support Opportunities: | BIOTA-FAPESP Program - Regular Research Grants |
| FAPESP's process: | 19/08474-8 - Freshwater ecosystems under climate change: impacts across multiple levels of organisation |
| Grantee: | Gustavo Quevedo Romero |
| Support Opportunities: | Research Program on Global Climate Change - Thematic Grants |