Trichoptera Kirby (Insecta) immature fauna from Rio das Almas Basin and Rio Paranã, Goiás State, Brazil, with new records for some genera

Barbosa, Felipe Francisco; Godoy, Bruno Spacek; Oliveira, Leandro Gonçalves

doi:10.1590/s1676-06032011000400001

Cited by 5 publications

(3 citation statements)

References 20 publications

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“…The depth at site 3 is smaller than the other sites. According to Barbosa et al (2011) shallow regions hosts a most diverse community of macroinvertebrates than deep regions, preferably above occurrence, the availability of food items, and different groups of macroinvertebrates are associated with communities of water plants, and the use of the substrate as safe fixation, transport and reproduction.…”

Section: Discussionmentioning

confidence: 99%

Small dams also change the benthic macroinvertebrates community in rocky rivers

et al. 2017

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Cite as: Mattos, L. et al. Small dams also change the benthic macroinvertebrates community in rocky rivers. Acta Limnologica Brasiliensia, 2017, vol. 29, e18. Abstract: Aim:Here we analyzed some basic ecological attributes (richness and density) of the benthic community in a stretch of a rocky river under the influence of a small dam of a meter in height, forming a small reservoir of run-of-river type. Methods: Sediment samples were taken with a Petersen collector at three different periods and in three sites: upstream from the dam (site 1), close to the dam (site 2) and downstream from the dam (site 3). Organisms were separated in large groups and Chironomidae genera. Results: The particle size analysis indicated that the sites 1 and 2 are dominated by fine sediments, in contrast to site 3, composed of medium and coarse sediments. A total of 23 taxa of benthic macroinvertebrate groups and 31 genera of Chironomidae were found. Richness and density were different among sampling sites, and for large groups and Chironomidae its attributes increased towards downstream, probably explained by the sediment composition and the originally lotic conditions in site 3, confirmed by all statistical analysis used. In the dam site (2) there was a richness decrease. Non metric multidimensional analysis showed a clear spatial separation of large groups of macroinvertebrates and chironomid genera between sampling sites, indicating that there are typical taxa of each spatial compartment. Canonical correspondence analysis correlated only rubble sediment with the abundance of large groups, and for Chironomidae genera only the granules type was correlationed, with two groups of taxa in the anlysis: one with sites 1 and 2, and other with site 3. Conclusions: Even very small dams in rocky rivers as in the present study alter the environmental variables and ecological attributes of benthic macroinvertebrates.

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Section: Discussionmentioning

confidence: 99%

Small dams also change the benthic macroinvertebrates community in rocky rivers

et al. 2017

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“…This phenomenon directly results from the change in economic and production base that this region has gone through. The expansion of the industrial park, notably that of agribusiness, and the strengthening of the service sector, boosted the local economy, attracting immigrants [48].…”

Section: Study Areamentioning

confidence: 99%

Investigating Relationships between Runoff–Erosion Processes and Land Use and Land Cover Using Remote Sensing Multiple Gridded Datasets

Fonseca

Al‐Ansari

Silva

et al. 2022

IJGI

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Climate variability, land use and land cover changes (LULCC) have a considerable impact on runoff–erosion processes. This study analyzed the relationships between climate variability and spatiotemporal LULCC on runoff–erosion processes in different scenarios of land use and land cover (LULC) for the Almas River basin, located in the Cerrado biome in Brazil. Landsat images from 1991, 2006, and 2017 were used to analyze changes and the LULC scenarios. Two simulations based on the Soil and Water Assessment Tool (SWAT) were compared: (1) default application using the standard model database (SWATd), and (2) application using remote sensing multiple gridded datasets (albedo and leaf area index) downloaded using the Google Earth Engine (SWATrs). In addition, the SWAT model was applied to analyze the impacts of streamflow and erosion in two hypothetical scenarios of LULC. The first scenario was the optimistic scenario (OS), which represents the sustainable use and preservation of natural vegetation, emphasizing the recovery of permanent preservation areas close to watercourses, hilltops, and mountains, based on the Brazilian forest code. The second scenario was the pessimistic scenario (PS), which presents increased deforestation and expansion of farming activities. The results of the LULC changes show that between 1991 and 2017, the area occupied by agriculture and livestock increased by 75.38%. These results confirmed an increase in the sugarcane plantation and the number of cattle in the basin. The SWAT results showed that the difference between the simulated streamflow for the PS was 26.42%, compared with the OS. The sediment yield average estimation in the PS was 0.035 ton/ha/year, whereas in the OS, it was 0.025 ton/ha/year (i.e., a decrease of 21.88%). The results demonstrated that the basin has a greater predisposition for increased streamflow and sediment yield due to the LULC changes. In addition, measures to contain the increase in agriculture should be analyzed by regional managers to reduce soil erosion in this biome.

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“…In Brazil, studies on Trichopteran fauna have been growing in the last years (e.g. Bispo et al, 2004;Spies et al, 2006;Spies & Froehlich, 2009;Maltchik et al, 2009;Barbosa et al, 2011;Nogueira et al, 2011;Massoli & Callil, 2014), but few relate caddisflies with environmental pollution. For instance, Bispo et al (2004) have discussed the role of some physical habitat feature, such as canopy cover and anthropogenic influence, on caddisflies larvae distribution in streams.…”

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confidence: 99%