Influência de fatores ambientais na distribuição de famílias de insetos aquáticos em rios no sul do Brasil

Baptista, Vanessa dos Anjos; Antunes, Michelle Bicalho; Martello, Alcemar Rodrigues; Figueiredo, Nícolas de Souza Brandão de; Amaral, Aline Monique Blank do; Secretti, Elisangela; Braun, Bruna Marmitt

doi:10.1590/s1414-753x2014000300010

Cited by 10 publications

(9 citation statements)

References 59 publications

(48 reference statements)

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“…Other studies carried out in southern Brazil indicated a lower taxa representativeness (Bueno et al 2003;Pereira and De Luca 2003;Ayres-Peres et al 2006;Strieder et al 2006a;Buckup et al 2007;Milesi et al 2009 ;Biasi et al 2010;Sobczack et al 2013;Baptista et al 2014;Salvarrey et al 2014). The study conducted the closest to our study area was carried out in the Ibicuí River basin, west of Rio Grande do Sul, also within the Pampa biome (Baptista et al 2014). These authors sampled more than 9,000 individuals, distributed in 26 aquatic insect families, in the evaluated streams.…”

Section: Discussionmentioning

confidence: 90%

“…Some studies indicate that aquatic macroinvertebrate communities show gradual changes in species richness and composition along the longitudinal dimension as not only the stream order and composition but also habitat complexity increase, giving rise to nested patterns composition or variations in macroinvertebrate functional groups (Pereira and De Luca 2003;Milesi et al 2009;Baptista et al 2014). In rivers with large longitudinal variation in climate, geology, substrate and relief, community assemblage generally shows strong discontinuities with high species turnover between adjacent sites (Bagatini et al 2012;Barbero et al 2013;Mc Conigley et al 2017).…”

Section: Introductionmentioning

confidence: 99%

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Structure of aquatic macroinvertebrate communities in streams of a sub-basin in the Pampa Biome, Southern Brazil

Hentges¹,

Menzel²,

Loebens³

et al. 2021

NBC

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The Piratinim River is located in the northwest of Rio Grande do Sul, and represents an important effluent from the Uruguay River, with streams located far from urbanized areas, in conditions similar to those of environmental integrity, but under the influence of agricultural activities. In this study, we aim at investigating the structure of the aquatic macroinvertebrate community in streams of the Piratinim river basin by observing both spatial and local scales. The sampling was carried out in six streams distributed in three regions (upper, middle and lower) of the basin, thus exploring its upstream, intermediate and downstream stretches, during spring and autumn. Macroinvertebrates were collected using aquatic dipnets and were identified at the family level; trophic-functional categories were established according to the classification adapted to the state of Paraná. The spatial and temporal variations of the groups and of the biotic attributes (density, richness, diversity and equitability) were subjected to Kruskal-Wallis non-parametric tests and a posteriori Dunn’s tests. The abiotic variables were obtained to verify possible influence on the composition of the macroinvertebrate community, evaluated through a Canonical Correspondence Analysis. We sampled 11,564 macroinvertebrate individuals from 72 taxa, and found a predominance of the collector-filter trophic group. Abundance and richness were different between streams; the highest densities were found in the streams located in the upper region of the watershed (Chuní and Itú). The highest taxon richness was found in the lower region of the watershed (Guaracapa stream), and the lowest richness was found in the two streams for the intermediate region (Santana and Ximbocu). Diversity and equitability did not vary; temporal variations were not found. Canonical correspondence analysis explained 31.7% of the data variability. The main environmental variables that influenced macroinvertebrates distribution were temperature, electrical conductivity, dissolved oxygen, altitude and extension of the riparian forest. Seasonality and the longitudinal gradient along the basin represented determining factors for the structure and distribution of the macroinvertebrate community in the tributary streams of the Piratinim River.

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Section: Discussionmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Structure of aquatic macroinvertebrate communities in streams of a sub-basin in the Pampa Biome, Southern Brazil

Hentges¹,

Menzel²,

Loebens³

et al. 2021

NBC

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“…Hence, the type of substrate could partially explain the lower diversity found in TIB streams. Texture, compaction, and grain size can affect the composition and abundance of benthic macroinvertebrates (Nakamura & Kikuchi, 1996;Fidelis, Nessimian, & Hamada, 2008;Baptista et al, 2014). Sandy soils are characterized by low heterogeneity and availability of physical habitats (Allan, 2004).…”

Section: Discussionmentioning

confidence: 99%

“…Physical, chemical and structural features are also important for aquatic life; for instance, dissolved oxygen, electric conductivity, alkalinity, and temperature are known to influence invertebrate occurrence and distribution (Melo, 2009;Rezende et al, 2014). Additionally, the communities' composition changes and the richness increase from the headwaters to the base level in response mainly to stream's width, depth, temperature and production/respiration ratio (Vannote et al, 1980;Jacobsen, 2004;Baptista et al, 2014).…”

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confidence: 99%

Variation of benthic macroinvertebrate communities in streams of three landscapes of South Brazilian grasslands

Galeti

Capitanio

Baldissera

2020

RBT

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Introduction: Aquatic ecosystems in southern Brazil are presently under great environmental pressure. Changes in land use result in negative impacts on the ecosystem, affecting the functioning of stream communities. Objective: To compare the benthic macroinvertebrate community richness, abundances and compositions in streams of three South Brazilian grassland landscapes and correlate community patterns with environmental and spatial variables. Methods: Fifteen streams along riparian forests were selected in three landscapes (mean geographical distance of 285.1 km) inserted in the Paraná and Uruguai river basins. Of the three landscapes, two are inserted in conservation units (State Park of Guartelá and Palmas Wildlife Refuge). Invertebrates were collected in 20 kick net points along 150 m of the streams between June and November 2015. Invertebrates were sorted in the laboratory with three sieves and were identified to the lowest taxonomic level possible. The taxa were classified in functional feeding groups of shredders/detritivores, predators, scrapers, collectors/filters and gatherers/collectors. For each stream, we measured the environmental variables width and velocity, pH, dissolved oxygen, and temperature; and the relative cover of forest, grassland, plantation and silviculture in the catchments. Results: We found a total of 1 058 individuals, divided in 53 morphospecies and 34 families. Lower abundance of benthic macroinvertebrates was found in the northernmost landscape with higher temperature, and forest in the catchment. These streams were described mainly by predator groups, while streams inserted in the other two landscapes showed a more diverse guild composition of shredders/detritivores, gatherers/collectors, collectors/filterers, and scrapers. Geographical distance was the main factor influencing differences in community compositions among landscapes. Conclusions: Lower abundance of the northernmost landscape may be explained by (i) the low habitat heterogeneity due to dominance of sandy substrates, and by (ii) the anthropogenic land use of agriculture and extensive cattle breeding in the region that is ongoing and started before the creation of the conservation unit. Additionally, composition of macroinvertebrates may be correlated with environmental differences among landscapes that, in turn, are related to the geographical distance. Therefore, macroinvertebrate community responses may reflect different biota biogeographical histories that can also be associated with historical land use practices.

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“…Portanto, a Teoria Hierárquica de Manchas parece funcionar melhor em córregos tropicais do que a Teoria do Rio Contínuo, ao explicar a diversidade de presas e predadores da fauna de EPTOH em riachos de cabeceiras. Esses resultados são condizentes com as observações de Oliveira & Nessimian (2010), Shimano et al, (2012) e Baptista et al, (2014), onde os tipos de substratos são preditores da abundância e riqueza de macroinvertebrados bentônicos (incluindo presas e predadores), pois influenciam a estrutura dos habitats, podendo determinar a ocorrência e a diversidade das espécies. O modelo hierárquico de manchas também explicou a distribuição de grupos de alimentação funcionais em ambientes lóticos menores (cachoeiras) (Brasil et al, 2014).…”

Section: Discussionunclassified

Diversidade de presas e predadores (Insecta) em mesohabitats de córregos de Cerrado

Giehl

Resende

Roges

et al. 2018

Iheringia, Sér. Zool.

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Tropical streams feature high variety of habitats and environmental gradients, which reflect on the greater richness of aquatic insects. In this way, we evaluate if the diversity of aquatic insects of prey and predator categories is influenced by the type of substrates or by longitudinal portions in Cerrado streams. Our hypothesis is that prey and predator diversity will be determined by the type of substrate, assuming that the substrate serves as a source for foraging and / or refuge. In addition, the folhiço substrate will present greater abundance and richness due to the availability of shelter and food provided by this type of substrate. There will be differences in prey and predator composition among substrates, since some species have associations with the substrate type. The portions of the stream will have no effect on the diversity of prey and predator, since in streams of up to third order does not present considerable changes in physical characteristics. The study was carried out in nascent (1st order), intermediate (2nd) and estuary (3rd), in two streams, during dry and rainy periods. Five subsamples of sand, gravel, rocks or boulders were collected, backwaters, rapids and roots (substrate). The substrate influenced all prey and predator responses (abundance, richness and composition), but the environment (longitudinal portions) did not influence the abundance and predator composition. The influence of substrates on the diversity of prey and predators evidences the importance of riparian vegetation as a source of allochthonous material in bedside streams.

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Influência de fatores ambientais na distribuição de famílias de insetos aquáticos em rios no sul do Brasil

Cited by 10 publications

References 59 publications

Structure of aquatic macroinvertebrate communities in streams of a sub-basin in the Pampa Biome, Southern Brazil

Structure of aquatic macroinvertebrate communities in streams of a sub-basin in the Pampa Biome, Southern Brazil

Variation of benthic macroinvertebrate communities in streams of three landscapes of South Brazilian grasslands

Diversidade de presas e predadores (Insecta) em mesohabitats de córregos de Cerrado

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