Composição Da Comunidade Zooplanctônica Em Um Pequeno Corpo D’água Raso No Sul De Minas Gerais

Coelho, Paula Nunes; Santos-Wisniewski, Maria José dos

doi:10.17271/1980082712120161364

Cited by 2 publications

(2 citation statements)

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“…The alkaline pH recorded is characteristic of brackish water, especially this parameter, in general, did not present variations outside the range considered susceptible to the biological community (< 5.0 or > 9.0) (Buzelli & Cunha-Santino, 2013). In relation to the concentrations of dissolved oxygen, although it is a parameter that reflects the presence of organic matter (Coelho & Santos-Wisniewski, 2016), here they did not demonstrate mains associations with the species. Therefore, there was not variation in diet in relation to the catch period and the availability of the items consumed was related to the characteristics of both the body of the reservoir and the marginal area.…”

Section: Discussioncontrasting

confidence: 63%

“…The water properties reported here did not interfere with feeding, since the results of the parameters evaluated were, for the most part, within the values considered compatible with their survival (Pádua, 2017) and did not suffer sudden variations throughout the year and at the points studied. Among these parameters, the temperature presented typical amplitude for the tropical region, there being no sudden variation of this parameter, which could imply a variation in the oxygen rates in the water, because the higher the temperature, the lower the dissolved oxygen content (Coelho & Santos-Wisniewski, 2016). These variables affect fish physiology, as observed by Gurgel-Lourenço et al (2015) in reservoirs in the semi-arid region, where the fish activity was influenced during the highest values of temperature and pH.…”

Section: Discussionmentioning

confidence: 95%

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Spatial-temporal analysis of the diet of a non-native fish in the Santa Cruz Reservoir, Brazilian semi-arid

Oliveira

Novaes

et al. 2018

Acta Limnol. Bras.

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Aim The diet of Plagioscion squamosissimus present in the Santa Cruz Reservoir, Rio Grande do Norte, Brazil, was investigated, evaluating the influences of spatial and temporal variations and abiotic factors in the utilization of food resources. Methods The samplings were performed quarterly between February 2011 and November 2014. Of the 525 specimens captured, 375 presented food items in the stomachs. The diet was determined using: (i) Feeding Index (IAi); (ii) and the graphical interpretation of the food strategy through non-metric multidimensional scaling (NMDS) analyzes, the differences in diet being tested from Permutational Multivariate Analyzes of Variance (PERMANOVA). To verify if environmental variables influence the Canonical Correspondence Analyzes (CCA) were used, using the data from the IAi the environmental data, being the significance of the axes tested through Monte Carlo simulations. Results The species feed mainly on items of animal origin, vegetable being a resource ingested accidentally. The diet was composed of shrimp, fish, insect, mollusk and vegetable, the latter rarely found. The shrimp was the main item (92.57%) and the insects (7.24%) accessory items. Spatial and temporal ordering demonstrated that the species didn’t present variation in diet composition, as well as a low association between diet and environmental variables. Conclusion P. squamosissimus is characterized as carcinophagous, due to the predominance of shrimp in its diet, evidencing that the species is adapted to the conditions offered by the Brazilian semi-arid environment.

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Section: Discussioncontrasting

confidence: 63%

Section: Discussionmentioning

confidence: 95%

Spatial-temporal analysis of the diet of a non-native fish in the Santa Cruz Reservoir, Brazilian semi-arid

Oliveira

Novaes

et al. 2018

Acta Limnol. Bras.

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Pequenos corpos d’água: cienciometria e avaliação ecológica

Guimarães¹

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Os cursos hídricos que possuem pequenas dimensões são denominados como pequenos corpos d’água. Nascentes são sistemas aquáticos essenciais para a manutenção da vida, além de possuírem alto valor ecológico e econômico. Por ser um objeto de estudo multidisciplinar, as nascentes podem ser analisadas com enfoque em diferentes áreas de estudo. Nesse contexto, o primeiro capítulo teve como objetivo mensurar as publicações sobre nascentes localizadas em território brasileiro e realizar sua análise cienciométrica. Foram encontrados 75 trabalhos, publicados de 1981 a 2021 e os estudos conduzidos na região do Sudeste brasileiro foram os mais abundantes. Os resultados também demonstram que o objetivo da maior parte dos estudos foi analisar a qualidade da água que estava aflorando das nascentes. É necessário que as diferentes áreas de conhecimento se integrem, a fim de progredir e direcionar maiores esforços com o intuito de preencher lacunas nos estudos sobre nascentes. As distintas condições ambientais decorrentes dos mesohabitats e usos do solo no entorno dos riachos podem interferir na estrutura e composição da fauna de oligoquetas, amplamente utilizada como indicadores dos ecossistemas aquáticos. O objetivo do segundo capítulo foi avaliar e comparar a fauna de oligoquetas encontrada em mesohabitats de corredeiras e remansos em riachos pertencentes à sub-bacia do Ribeirão Marmelos, Minas Gerais com distintos usos do solo em sua proximidade (florestado, urbano e pastagem). Diferença significativa na fauna de oligoquetas foi encontrada nos distintos mesohabitats e usos do solo. Condutividade, largura e profundidade foram variáveis importantes na separação entre remansos e corredeiras. Aulophorus furcatus foi a espécie associada a ambientes urbanos, Pristina jenkinae a corredeiras e Opistocysta funiculus, Limnodrilus hoffmeisteri e Tubificinae juvenil foram atrelados aos remansos. Os resultados encontrados podem contribuir para a compreensão da relação entre estrutura e composição da fauna de oligoquetas, os mesohabitats e o uso do solo.

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Composição Da Comunidade Zooplanctônica Em Um Pequeno Corpo D’água Raso No Sul De Minas Gerais

Cited by 2 publications

References 20 publications

Spatial-temporal analysis of the diet of a non-native fish in the Santa Cruz Reservoir, Brazilian semi-arid

Spatial-temporal analysis of the diet of a non-native fish in the Santa Cruz Reservoir, Brazilian semi-arid

Pequenos corpos d’água: cienciometria e avaliação ecológica

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