English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Investigations were carried out for the composition and occurrence of rotifer taxa of different forms and sizes during two distinct hydrological periods, in two environments (river and lake). Two sampling stations were established in open water of each environments. Surface samples were taken daily for 14 days. The faunistic similarity between the environments was established using Jaccard's index. One hundred and fourty three taxa were identified. The largest number of taxa was recorded in the river. Faunistic similarity between these environments was greater during high water. The planktonic taxa predominated and the difference for the non-planktonic ones was not marked. Non-planktonic taxa predominated in the river, while both types were numerous in the lake. We observed a larger number of smaller-sized taxa in both environments (> 200µm to 600µm in length). This was related to the shallowest depths and to current velocity, which moved benthic and periphytic taxa from the bottom and littoral zone into the water column. A composição e ocorrência dos rotíferos foi investigada during dois períodos hidrológicos distintos em dois ambientes (rio e lagoa). As coletas foram realizadas diariamente (14 dias) à superfície na região pelágica de cada ambiente. A similaridade faunística entre os ambientes foi avaliada através do índice de Jaccard. Foram identificados 143 táxons. O maior número de táxons foi registrado no rio. A similaridade faunística entre os ambientes foi maior no período de águas altas. Os táxons planctônicos predominaram, sendo que a diferença para os não planctônicos não foi expressiva. No rio, destacaram-se esses últimos táxons, enquanto que na lagoa prevaleceram tanto os táxons planctônicos como os não planctônicos. Verificou-se que ocorreu um maior número de táxons de menor tamanho (> 200µm a 600µm) nos dois ambientes. Esse fato está relacionado com a pequena profundidade dos ambientes e a velocidade de corrente no rio, o que permite o deslocamento dos táxons bentônicos e perifíticos do fundo e da região litorânea para a coluna de água

Planktonic and non-planktonic rotifers in two environments of the Upper Paraná River floodplain, state of Mato Grosso do Sul, Brazil