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Trajectories of aquatic insect functional groups along the resistance/resilience axis when facing water flow changes
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  • Bruno Godoy,
  • Francisco Valente Neto,
  • Luciano Queiroz,
  • Luis Holanda,
  • Fabio Roque,
  • Sara Lodi,
  • Leandro Oliveira
Bruno Godoy

Corresponding Author:[email protected]

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Francisco Valente Neto
Universidade Federal de Mato Grosso do Sul
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Luciano Queiroz
Universidade de Sao Paulo
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Luis Holanda
Universidade Federal de Goias
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Fabio Roque
Universidade Federal de Mato Grosso do Sul
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Sara Lodi
Universidade Federal de Goias - Campus Samambaia
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Leandro Oliveira
Universidade Federal de Goias
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1. Understanding how differences in intensity and frequency of hydrological disturbances affect the resistance and resilience of aquatic organisms is key to manage aquatic systems in a fast-changing world. Organisms’ responses to environmental changes can be influenced by different life strategies. Some aquatic organisms have strategies that improve the permanence in aquatic systems, while others use strategies that enhance colonization. 2. Therefore, we carried out a manipulative experiment to understand the resistance/resilience of aquatic insects based on their functional characteristics to hydrological disturbances in streams in the Cerrado hotspot. 3. We placed 200 artificial substrates in five streams and submitted them to changing water flow regimes that differed both in frequency and intensity. Then we observed the response of the aquatic community for 39 days. We used a Hierarchical Bayesian strategy approach to estimate the probabilities of permanence and colonization of each life strategy group (nine groups). 4. We observe that the most intense changes in the water flow tend to affect the permanence of almost all groups. However, this effect was reduced in intensity over time. On the other hand, less frequent disturbances, regardless of intensity, tend to reduce the permanence of most groups of aquatic insects over time. The difference in the effect of disturbance regarding intensity (higher or lower) may be related to a greater dispersal capacity of some groups. 5. These results are worrisome in a scenario of reduced riparian vegetation around streams and with the expectation of precipitation to become more concentrated in shorter periods of time due to climate change in the Cerrado hotspot. Together, these anthropogenic changes tend to increase the effect of runoff on the lotic systems and, consequently, reduces the permanence of many groups of aquatic insects in their habitat, particularly those with traits associated with permanence.
09 Nov 2021Submission Checks Completed
09 Nov 2021Assigned to Editor
11 Nov 2021Reviewer(s) Assigned
01 Dec 2021Review(s) Completed, Editorial Evaluation Pending
16 Dec 2021Editorial Decision: Revise Minor
08 Feb 20221st Revision Received
10 Feb 2022Submission Checks Completed
10 Feb 2022Assigned to Editor
10 Feb 2022Review(s) Completed, Editorial Evaluation Pending
14 Feb 2022Editorial Decision: Revise Minor
21 Feb 20222nd Revision Received
22 Feb 2022Submission Checks Completed
22 Feb 2022Assigned to Editor
22 Feb 2022Review(s) Completed, Editorial Evaluation Pending
28 Feb 2022Editorial Decision: Accept