Untitled

Bonecker, Cláudia Cósta; Lansac-Tôha, F. A.; Velho, Luiz Felipe Machado; Rossa, Dayane

doi:10.1023/a:1013142101266

Cited by 18 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such a predominance of immature forms of copepods within the zooplanktonic community has also been reported by other authors (e.g., Bonecker et al, 2001;Almeida et al, 2009;Cardoso and Marques, 2009) and is generally linked to the high mortality rates of nauplii and copepodites and to predation on adults by planktivorous fish.…”

Section: Discussionsupporting

confidence: 83%

The zooplankton biodiversity of some freshwater environments in Parnaíba basin (Piauí, Northeastern Brazil)

Filho

et al. 2013

Braz. J. Biol.

View full text Add to dashboard Cite

The plankton fauna of the state of Piauí, Northeastern Brazil, especially in the Parnaíba basin, is still poorly known; the results of most studies of the subject have not been published and can only be found in grey literature (unpublished scientific works), such as course completion work and consulting reports. Thus, this paper presents data from samples taken recently from different water bodies in Piauí and represents the second study to be published on the region's zooplankton since the pioneering work of Spandl (1926). A total of 38 species were recorded, including 23 new occurrences of rotifers, 10 of cladocerans and 2 of copepods for the state of Piauí. The greatest richness was observed for the rotifers, of which the genus Brachionus must be highlighted, especially at the Joana reservoir. Among the crustaceans, the greatest richness was observed at the Bezerra reservoir, where cladocerans of the genus Bosmina were prominent. The rotifers Brachionus havanaensis Rousselet, 1911 and Filinia longiseta (Ehrenberg, 1834); the cladocerans Diaphanosoma spinulosum Herbst, 1967 and Moina micrura Kurz, 1874; and the copepods Notodiaptomus cearensis Wright, 1936 and Thermocyclops decipiens Kiefer, 1927 occurred in all or in most environments in which the respective groups were studied. The results presented here expand the taxonomic list of zooplankton for the state of Piauí, including a total fauna of 30 species of rotifers, 15 of cladocerans and 3 of copepods. The zooplankton richness was considered low in the studied reservoirs compared to other freshwater ecosystems from Northeastern Brazil; however, the few studies developed in the Parnaíba basin suggest that the diversity for these organisms should be higher. Keywords

show abstract

Section: Discussionsupporting

confidence: 83%

The zooplankton biodiversity of some freshwater environments in Parnaíba basin (Piauí, Northeastern Brazil)

Filho

et al. 2013

Braz. J. Biol.

View full text Add to dashboard Cite

show abstract

“…In contrast, planktonic forms dominated in the post-filling phase. Similar results were also found in the Corumbá Reservoir in Goiás State (Lansac-Tôha et al, 1999;Bonecker et al, 2001). The number of species identified in our study (140 species) is higher than that identified by Lopes et al (1997) in Segredo Reservoir (90 species), and by Perbiche-Neves et al (2012) in Salto Caxias Reservoir (92 species).…”

Section: Discussionsupporting

confidence: 90%

“…The interactions occurring between the river basin and the impounded water lead to the establishment of spatial gradients (longitudinal and lateral gradients) of biotic and abiotic variables in the reservoir main channel (Perbiche-Neves and Nogueira, 2010;Perbiche-Neves et al, 2011). The formation of many side-arms generally associated with tributary rivers is common in dendritic reservoirs, which can also contribute to the formation of lateral gradients (Ward, 1989;Van Den Brink et al, 1994;Bonecker et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…In the initial years after impoundment, irregular reproduction cycles for many species of zooplankton occur (Perbiche-Neves et al, 2007;Serafim-Júnior et al, 2010). Colonisation processes range from r-to k-strategist species, initially with the dominance of small species (including rotifers, protozoans, small cladocerans and cyclopoid copepods), which tend to be replaced by large species, such as large cladocerans and calanoid copepods (Matsumura-Tundisi et al, 1991;Santos, 1995;Bonecker et al, 2001;Pedrozo et al, 2012). However, in the Neotropical region, comparative studies on zooplankton community in the pre-and post-impoundment phases remain scarce (Lansac-Tôha et al, 1999;Bonecker et al, 2001;Pedrozo et al, 2012), and additional investigations are needed to understand the succession mechanisms along the different filling stages.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Continuity effects on rotifers and microcrustaceans caused by the construction of a downstream reservoir in a cascade series (Iguaçu River, Brazil)

et al. 2016

Self Cite

View full text Add to dashboard Cite

This study evaluated changes in the community of rotifers and microcrustaceans associated with the construction of a large and dendritic reservoir in Iguaçu River (Brazil), as the last reservoir of a sequence of five cascading systems. Differences were clear between pre-filling and post-filling phases for organisms and some of environmental variables. In the pre-filling phase, the community was more homogeneous along the downstream river gradient, and spatial compartmentalization in the new reservoir was common during the post-filling phase. From 140 identified taxa, 10 species occurred exclusively in the pre-filling phase and 32 in the post-filling phase. After completion of the fifth reservoir filling-up, opportunistic, pioneer and fast-developing species quickly dominated, and downstream of the fourth reservoir the pre-filling decreasing gradient of richness, diversity and evenness disappeared. Richness of rotifers and cladocerans, cladocerans diversity, and evenness of rotifers, cladocerans and copepods were generally higher in the post-filling phase. A non-metric multidimensional analysis based on a presence/absence matrix depicted a homogeneous and dense group of species associated to the pre-filling phase and a second, dispersed group related to the post-filling phase. Spearman correlations pointed out significant positive effects of transparency on rotifer species richness in the post-filling phase, and negative effects on the microcrustacean richness in the pre-filling phase. Dam construction caused disruption of the downstream lotic gradient along the series of dams, leading to the development of distinct species in lentic spatial compartments. Efeitos contínuos sobre rotíferos e microcrustáceos causados pela construção de um reservatório a jusante de uma série em cascata, Rio Iguaçú, Brasil Resumo Esse estudo analisou os efeitos da construção de um reservatório largo e dendrítico no Brasil sobre a comunidade de rotíferos e microcrustáceos, sendo o último reservatório de uma cascata de cinco. Houve claras diferenças entre as fases pré e pós-enchimento para os organismos e para algumas variáveis ambientais. Na fase pré-enchimento, a comunidade foi mais homogênea no gradiente longitudinal no rio a jusante, e na fase pós-enchimento houve compartimentalização espacial no novo reservatório. Dos 140 táxons identificados, dez espécies ocorreram exclusivamente na fase pré-enchimento e 32 na fase pós-enchimento. Após o enchimento, espécies oportunistas, pioneiras e de rápido desenvolvimento foram dominantes, e desapareceu o gradiente de decréscimo a jusante do quarto reservatório para a riqueza, diversidade e equitabilidade durante a fase pré-enchimento. A riqueza de rotíferos e cladóceros, a diversidade de cladóceros, e a equitabilidade de rotíferos, cladóceros e copépodes foram elevadas na fase pós-enchimento. A análise de escalonamento multidimensional não-métrico sobre a matriz de presença e ausência mostrou um grupo homogêneo e denso de espécies e meses de amostragem na fase pré-enchimento, e outro grupo d...

show abstract

“…According to Bonecker et al (2001), food availability (chlorophyll-a) is closely related to the abundance of calanoids. This study recorded that four species of Calanoida were most representative in the lateral compartment.…”

Section: Cladoceramentioning

confidence: 99%

Spatial distribution and temporal variation of microcrustaceans assembly (Cladocera and Copepoda) in different compartments of a reservoir in the brazilian semiarid region

2018

View full text Add to dashboard Cite

Aim: The objective of this study was to investigate the spatial and temporal variation of microcrustacean assemblages of a reservoir in the Brazilian semiarid region. Methods Physical and chemical water variables and samples of microcrustaceans were collected at eight sites of the reservoir between July 2013 and November 2014, in a total of seven campaigns. For this study, the reservoir was categorized in two compartments: lateral and central. Results Limnological variables showed significant temporal variation (PERMANOVA, Pseudo-F = 19.51, p = 0.001). Higher turbidity values and suspended solids were observed in the rainiest months, while during the dry months, we measured higher values of transparency, dissolved oxygen, and chlorophyll-a. It was not found significant spatial variation of limnological variables (PERMANOVA, Pseudo-F = 0.96; p = 0.394). During the study period, ten species were recorded: four Cladocera (Ceriodaphnia cornuta, Daphnia gessneri, Diaphanosoma birgei and Diaphanosoma spinulosum ) three Copepoda Calanoida (Argyrodiaptomus azevedoi, Notodiaptomus cearensis and Notodiaptomus iheringi) and three Copepoda Cyclopoida (Macrocyclops albidus, Thermocyclops minutus and Thermocyclops decipiens). The microcrustacean assemblages showed significant temporal variation (PERMANOVA, Pseudo-F = 4.34; p = 0.001) as well as significant spatial variation (PERMANOVA, Pseudo-F = 9.46; p = 0.001). The highest values of abundance and richness were observed in the lateral compartment, this result is mainly related to the presence of aquatic macrophytes in this region, because the analysis of partial RDA indicated that limnological variables explained only 11% of this variation (Pseudo-F = 2.08, p = 0.001). Conclusions The results suggest that the seasonality of the semiarid is an important factor in the temporal dynamics of the limnological variables, while the aquatic macrophytes play an important role in the spatial distribution of the microcrustacean assembly.

show abstract

Untitled

Cited by 18 publications

References 0 publications

The zooplankton biodiversity of some freshwater environments in Parnaíba basin (Piauí, Northeastern Brazil)

The zooplankton biodiversity of some freshwater environments in Parnaíba basin (Piauí, Northeastern Brazil)

Continuity effects on rotifers and microcrustaceans caused by the construction of a downstream reservoir in a cascade series (Iguaçu River, Brazil)

Spatial distribution and temporal variation of microcrustaceans assembly (Cladocera and Copepoda) in different compartments of a reservoir in the brazilian semiarid region

Contact Info

Product

Resources

About