Successional colonization of temporary streams: An experimental approach using aquatic insects

Godoy, Bruno Spacek; Queiroz, Luciano Lopes; Lodi, Sara; Jesus, Jhonathan Diego Nascimento de; Oliveira, Leandro Gonçalves

doi:10.1016/j.actao.2016.08.010

Cited by 6 publications

(8 citation statements)

References 35 publications

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“…Many explanations may account for these results, and we need to highlight that some parameters may have been overestimated in some hypotheses because our previous information about the biology of some groups was limited. Carvalho & Uieda, 2004;Landeiro et al, 2010), and the use of drift strategies for recolonization (Megaloptera and some Coleoptera and Trichoptera larvae, Godoy, Queiroz, et al, 2016;Krueger & Cook, 1984;Townsend & Hildrew, 1994) may explain the divergence between the hypothesis and patterns observed in this study.…”

Section: Discussionmentioning

confidence: 55%

“…Our study adds evidence that a generalization like “water flow intensity affected the permanence of…” is valid mainly for the period immediately after the disturbance because the effects of disturbance lose its intensity over time on macroinvertebrates. This pattern may be related to the resilience (recolonization parameter) capacity of macroinvertebrates since many recolonize substrates subject to disturbances in few hours or days (Boulton et al, 1992 ; Brooks & Boulton, 1991 ; Godoy, Queiroz, et al, 2016 ; Landeiro et al, 2010 ; Townsend & Hildrew, 1976 ). In addition, Poff and Zimmerman ( 2010 ) reviewed the response of aquatic organisms to changes in water flow and showed that the abundance and diversity of macroinvertebrates have mixed responses to changes in intensity of the flow regime.…”

Section: Discussionmentioning

confidence: 99%

“…(Anacardiaceae), a common plant in the region, with a standardized leaf area of 25.63 cm 2 , all packed within a 500 cm 3 (10 cm × 10 cm × 5 cm) rectangular wire mold. AS are efficient for experiments of aquatic insect colonization in Cerrado streams, constituting a well delimited sample unit (Carvalho & Uieda, 2006 ; Godoy, Queiroz, et al, 2016 ). We used a 0.225 mm hand sieve when sampling the AS and fixed the samples in 80% ethanol.…”

Section: Methodsmentioning

confidence: 99%

“…The 21-day interval was previously reported as enough for the establishment of a stable aquatic insect community (Godoy, Queiroz, et al, 2016;Landeiro et al, 2010). The disturbance was a subtle increase in water flow using a water pump from a 60 cm distance upstream.…”

Section: Immediate Effectmentioning

confidence: 99%

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Structuring functional groups of aquatic insects along the resistance/resilience axis when facing water flow changes

Godoy

Valente‐Neto

Queiroz

et al. 2022

Ecology and Evolution

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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. Some aquatic insects have strategies that improve the permanence (resistance), while others use strategies that favor recolonization (resilience). Therefore, we carried out a manipulative experiment to understand the influence of functional characteristics of aquatic insects in their permanence and recolonization against hydrological disturbances in streams in the biodiversity hotspot of the Cerrado of Brazil. We placed 200 artificial substrates in five streams and submitted them to changing water flow regimes that differed both in frequency and intensity, and we observed the response of the aquatic community for 39 days. We used a hierarchical Bayesian approach to estimate the probabilities of permanence and recolonization of each life strategy group (nine groups). We observed that the most intense changes in the water flow tended to affect the permanence of almost all groups, but the intensity of this effect reduced over time. On the other hand, less frequent disturbances, regardless of intensity, tended to reduce the permanence of most groups of aquatic insects over time. The different effects of disturbance intensity may have been related to a greater recolonization capacity of some groups. The results we present are worrisome in a scenario of reduced riparian vegetation around streams and with the expectation of precipitation becoming more concentrated in shorter periods of time due to climate change in the Cerrado hotspot, reducing the occurrence of many groups of aquatic insects in their habitat, particularly those with traits associated with resistance against hydrological disturbance.

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Section: Discussionmentioning

confidence: 55%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Immediate Effectmentioning

confidence: 99%

See 2 more Smart Citations

Structuring functional groups of aquatic insects along the resistance/resilience axis when facing water flow changes

Godoy

Valente‐Neto

Queiroz

et al. 2022

Ecology and Evolution

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“…It is very likely that our study better captured the effects of the rewetting in terms of dispersal and colonisation, that could be lost to some extent in February when communities are stabilised and density-dependent processes (e.g. competition, predation) operate (Closs & Lake, 1994;Godoy et al, 2016). These findings highlight the importance of considering both recent and longer-term antecedent hydrological conditions (Sa ´nchez-Montoya et al, 2018), especially in TRs with highly variable hydrological regimes, such as those in our semi-arid study area (Gallart et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Local hydrological conditions and spatial connectivity shape invertebrate communities after rewetting in temporary rivers

Pineda-Morante

Fernández-Calero

Pölsterl³

et al. 2022

Hydrobiologia

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Temporary rivers (TRs) dominate global river networks and are increasing in occurrence and spatiotemporal extent. However, few studies have investigated the communities that establish after rewetting events (i.e. the end of the dry phase), when local hydrological conditions can shape the communities through species sorting, and the spatial connectivity of sites can also influence colonisation. Here, we analysed the relative importance of both local hydrological conditions and spatial connectivity on the invertebrate communities of seven not impacted Mediterranean TRs after rewetting. We quantified the frequency and duration of drying events and the time since flow resumed. We also quantified spatial connectivity based on each site’s position in the river network (i.e. network connectivity) and the presence of nearby disconnected streams. Overall, we found that both hydrological conditions and network connectivity played a significant role in structuring aquatic invertebrate communities after rewetting. Taxonomic richness, functional richness and functional redundancy decreased with the frequency and duration of drying events and increased with time since the most recent rewetting. Network connectivity showed a significant unimodal relationship with taxonomic and functional metrics. In contrast, the presence of nearby disconnected streams was negatively related to functional richness and functional dispersion. Given that flow intermittence in Mediterranean areas is expected to intensify under future global change scenarios, our results can be helpful to guide future conservation and management actions.

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Distribution and Habitats of Aquatic Insects

Koroiva

Pepinelli

2019

Aquatic Insects

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Successional colonization of temporary streams: An experimental approach using aquatic insects

Cited by 6 publications

References 35 publications

Structuring functional groups of aquatic insects along the resistance/resilience axis when facing water flow changes

Structuring functional groups of aquatic insects along the resistance/resilience axis when facing water flow changes

Local hydrological conditions and spatial connectivity shape invertebrate communities after rewetting in temporary rivers

Distribution and Habitats of Aquatic Insects

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