Benthic macroinvertebrate community structure and seasonal variation in a neotropical stream in the State of Alagoas, Brazil

Linares, Marden S.; Faccioli, Gregório Guirado; Freitas, Liriane Monte

doi:10.1590/s1676-06032013000300006

Cited by 11 publications

(4 citation statements)

References 21 publications

(28 reference statements)

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“…Structural and functional composition of macroinvertebrate communities including abundance shows seasonal variations due to changes in flow and temperature affecting habitat stability and food resources (Linares, Faccioli, & Freitas, ,b). However, in the present study, there was no difference between dry and wet seasons (Figure ).…”

Section: Discussionmentioning

confidence: 99%

Macroinvertebrate‐based bioassessment of rivers in Addis Ababa, Ethiopia

Desalegne

2017

Afr. J. Ecol.

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Chemical-based studies have shown pollution of rivers in Addis Ababa, Ethiopia.However, as bioassessment is not a component of the river assessment and monitoring programmes, information on the ecological status of the rivers is limited. The study assessed the ecological status of the Little and Greater Akaki Rivers using macroinvertebrates. Macroinvertebrates were collected from twelve sites twice in the dry and wet seasons. There was abundance of few tolerant, collector-gatherer taxa with a loss of most sensitive taxa that used to be part of the river systems. Macroinvertebrate communities from upper and lower reaches showed complete differentiation on the nonmetric multidimensional scaling (NMS) ordination graph with upstream reaches composed of relatively sensitive taxa while the lower reaches dominated by tolerant taxa. Multiresponse permutation procedure (MRPP) showed significant difference between the two reaches. Macroinvertebrate communities from the dry and wet seasons did not show differentiation on the NMS ordination graph and MRPP did not show significant difference. Both rivers scored low in the South African Scoring System (SASS 5) and ETHbios, indicating ecological degradation. The results suggest that several decades of environmental degradation might have led to impoverished regional species pool, consisting mainly tolerant and generalist taxa constant throughout the year. R esum e Des etudes chimiques ont r ev el e la pollution des cours d'eau a Addis-Abeba, en Ethiopie. Cependant, comme l' evaluation biologique n'est pas une composante des programmes d' evaluation et de monitoring des rivi eres, les informations sur le statut ecologique des rivi eres sont limit ees. Cette etude a evalu e le statut ecologique des rivi eres Petit et Grand Akaki au moyen des macro-invert ebr es. Ceux-ci ont et e collect es sur 12 sites, deux fois, en saison s eche et en saison des pluies. Il y avait une abondance de quelques taxons tol erants, collecteurs-rassembleurs, et une perte de taxons plus sensibles qui faisaient auparavant partie des syst emes hydrographiques. Les communaut es de macro-invert ebr es des parties sup erieures et inf erieures montraient une diff erenciation compl ete sur les graphiques des analyses multidimensionnelles non param etriques (NMS), celles des parties sup erieures se composant de taxons relativement sensibles alors que dans les parties inf erieures dominaient les taxons tol erants. Un test de permutation multiple (MRPP) a montr e des diff erences significatives entre les deux extr emit es. Les communaut es de macro-invert ebr es de

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Section: Discussionmentioning

confidence: 99%

Macroinvertebrate‐based bioassessment of rivers in Addis Ababa, Ethiopia

Desalegne

2017

Afr. J. Ecol.

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“…Therefore, the monitoring may identify livestock activities and dumping of wastewater or even the dam impacts on Iguaçu River’s tributaries ( ICMBio 2018 , UNESCO 2019 ). Additionally, since seasonality may imply the structuring of the macroinvertebrate community, changing their habitat conditions and food availability ( Linares et al 2013 ), seasonal records of macroinvertebrates may provide a dataset to verify the effects of the interaction between local anthropogenic impacts and seasonal influences.…”

Section: Introductionmentioning

confidence: 99%

Seasonal records of benthic macroinvertebrates in a stream on the eastern edge of the Iguaçu National Park, Brazil

Santos

Wolff

Baldan³

et al. 2020

BDJ

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Background Iguaçu National Park (INP) is known worldwide due to Iguaçu Waterfalls, being considered a World Natural Heritage by UNESCO. The INP is one of the last large forested extensions of inland Brazil that provides protection to the Atlantic Forest, one of the world’s biodiversity hotspots. However, its Natural Heritage status has been threatened by the construction and operation of the Baixo Iguaçu dam, agricultural and urban impacts on its boundaries and the increasing interest of the Brazilian government in re-opening of the “Colono road”, an old illegal road that crossed the interior of the park. Indeed, since benthic macroinvertebrates have been widely used for the environmental assessment of streams, records and abundance of their taxa under different seasonal periods may provide an additional dataset for biomonitoring of hydrographic systems in the face of current anthropogenic impacts on the INP boundaries and other similar streams on forest edges. New information In this study, we improved the sampling design of benthic macroinvertebrates and provided seasonal records covering distinct precipitation/temperature periods between 2016 and 2017 of a stream on the eastern edge of the Iguaçu National Park, Brazil. The records total 2,840 individuals distributed in 88 different taxa. The most abundant taxa were the Diptera subfamilies, Chironominae (n = 1,487) and Tanypodinae (n = 256), besides the Heterelmis genus (n = 152, Elmidae; Coleoptera). Diptera was the richest order in number of families (n = 8), while Leptophlebiidae (Ephemeroptera) was the richest taxonomic family in number of genera (n = 11). Aegla (Crustacea) and the Insecta genera, Heterelmis, Hexacylloepus, Noelmis, Phylloicus and Thraulodes, were recorded through all samplings. Twenty-five genera of Ephemeroptera, Plecoptera, Trichoptera (EPT) and Odonata were recorded during intermediate precipitation/temperature periods. Twenty-one of them were recorded in May 2016, with five genera standing out in abundance (Hydrosmilodon, Anacroneuria, Argia, Coryphaeschna, Americabaetis) and four (Needhamella, Tikuna, Simothraulopsis, Neocordulia) in December 2016. Four general taxa were exclusive of the lower precipitation/temperature period (August 2016), standing out in abundance were the Oxystigma (Odonata) and Corydalus (Megaloptera) genera. In March 2017 (higher precipitation/temperature period), four exclusive taxa were recorded, amongst them, the Chimarra (Trichoptera) genus. Furthermore, seasonal records demonstrated higher occurrences and abundance of macroinvertebrates during the intermediate and lower precipitation/temperature periods, besides a varied taxa composition throughout the year, with the presence of both sensitive and tolerant groups to environmental impacts. Our findings suggest that the number and composition of the local-stream macrobenthic fauna were influenced by the seasonal climatic regime. These changes should be considered in the limnological monitoring developed on the hydrographic systems of INP eastern edges to improve the assessment of environmental quality under different local seasonal conditions.

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“…During spring and autumn, their preferences were more variable, but in general, a preference for shallower and slow-flowing habitats was observed, with the habitat suitability peaking at the lowest discharges mostly in spring. Although seasonal differences in macroinvertebrate-community abundance and composition have long been reported in literature [48][49][50][51][52], community-shifts in their habitat preferences have not been studied; we assume that such 'shifting behavior' may be associated with the seasonal fluctuation of environmental variables, which are known primary drivers of BMI-community changes, that is, shading, water temperature and dissolved oxygen [53]. As summer approaches, shading from the surrounding riparian vegetation is reduced, the water temperature increases, the dissolved oxygen concentration decreases [54] and consequently, faster flowing, deeper, better oxygenated habitats provide shelter against the changing environment.…”

Section: Seasonal and Temporal Variation In The Habitat Preferences Omentioning

confidence: 99%

Spatiotemporal Variation in Benthic-Invertebrates-Based Physical Habitat Modelling: Can We Use Generic Instead of Local and Season-Specific Habitat Suitability Criteria?

Theodoropoulos

Skoulikidis

Stamou

et al. 2018

Water

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Generic habitat suitability criteria (HC) are often developed from spatially and temporally variable hydroecological datasets to increase generality, cost-effectiveness, and time-efficiency of habitat models. For benthic macroinvertebrates (BMIs), however, there is no prior knowledge on the spatiotemporal variation in their habitat preferences and how this may be reflected in the final environmental flow (e-flow) predictions. In this study, we used a large, spatiotemporally variable BMI-hydroecological dataset and developed generic, local, and season-specific subsets of HC for three seasons and two river types within various data pre-treatment options. Each subset was used to train a fuzzy habitat model, predict the habitat suitability in two hydrodynamically-simulated river reaches, and develop/compare model-based e-flow scenarios. We found that BMIs shift their habitat preferences among seasons and river types; consequently, spatiotemporally variable e-flow predictions were developed, with the seasonal variation being greater than the typological one. Within this variation, however, we found that with proper data pre-treatment, the minimum-acceptable e-flows from the generic models mostly (65–90%) lay within the acceptable e-flows predicted by the local and season-specific models. We conclude that, within specific limitations, generic BMI-HC can be used for geographically extended, cost-effective e-flow assessments, compensating for the within-limits loss of predictive accuracy.

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Benthic macroinvertebrate community structure and seasonal variation in a neotropical stream in the State of Alagoas, Brazil

Cited by 11 publications

References 21 publications

Macroinvertebrate‐based bioassessment of rivers in Addis Ababa, Ethiopia

Macroinvertebrate‐based bioassessment of rivers in Addis Ababa, Ethiopia

Seasonal records of benthic macroinvertebrates in a stream on the eastern edge of the Iguaçu National Park, Brazil

Spatiotemporal Variation in Benthic-Invertebrates-Based Physical Habitat Modelling: Can We Use Generic Instead of Local and Season-Specific Habitat Suitability Criteria?

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