Dynamics of plankton and fish in a subtropical temporary wetland: Rice fields

Rodrigues, Lúcia Ribeiro; Canterle, Eliete Bertazzo; Becker, Vanessa; Gazulha, Vanessa; Hamester, Ângela; Marques, David da Motta; Pós, Programa De

doi:10.5897/sre10.735

“…attached to the roots and stems of aquatic plants (Malee et al, 2018). Similarly, Lecane bulla was the most abundant rotifer species in a Brazilian paddy field (Rodrigues et al, 2011). Both zooplankton genera can attach themselves to the roots and stems of aquatic plants.…”

Section: Zooplankton Abundancementioning

confidence: 95%

Temporal Changes in Zooplankton Community Composition and Abundance in Chemical and Organic Rice Fields in Buri Ram Province, Thailand

2024

JFE

0

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Zooplankton serve as crucial consumers, facilitating energy and nutrient transfer between phytoplankton producers and higher trophic levels such as fish and invertebrates in aquatic ecosystems (Alcaraz and Calbet, 2003). Sensitivity to environmental changes, including water quality, nutrient levels, temperature fluctuations, and toxins, underscores the importance of studying zooplankton for preserving water resource equilibrium and understanding their response to environmental factors (Chen, 2020).The abundance and diversity of zooplankton are influenced by various environmental factors, such as nutrient levels, phytoplankton abundance, hydrological conditions, and predation pressure from fish species, shaping zooplankton community structure (Badsi et al., 2010). Temperature variations positively influence zooplankton distribution (Sellami et al., 2011), while increased nutrient levels correlate with higher zooplankton abundance (Yang et al., 2023). Seasonal and habitat variability further contribute to differences in zooplankton distribution. Climate change and anthropogenic impacts significantly affect community abundance and structure (Hassan et al., 2022;Yang et al., 2023).

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Phytoplankton dynamics in permanent and temporary Mediterranean waters: is the game hard to play because of hydrological disturbance?

Naselli-Flores

¹

,

Barone

²

2012

Phytoplankton Responses to Human Impacts at Different Scales

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Only few scientific investigations have been carried out, to our knowledge, on phytoplankton in Mediterranean temporary ponds. To test the hypothesis that climate forcing is the main factor affecting dynamics and structure of planktic algae in these peculiar ecosystems, and to assess the importance of human impacts on this basic component of the aquatic biota, phytoplankton structure and dynamics were analysed in two temporary, long lasting (9 months), ponds, and in a permanent one. The three studied water bodies can be classified as mesoeutrophic, which show extended macrophyte beds and are subjected to one or more human impacts, such as eutrophication, fish and plant introduction, and garbage pollution. Phytoplankton samples were collected monthly over two different periods in each pond. The identified phytoplankton taxa were grouped in functional coda and non-parametric ordination methods were used to analyse their annual patterns. Results showed a well-defined sequence of coda, which followed a common seasonal pattern in all the studied ponds, when the ordination techniques were applied to a singular water body. This pattern was overlapping in the three studied environments without apparent influence exerted either by the environmental typology (e.g. permanent or temporary) or by human impacts. However, when the analyses were carried out by means of a single matrix containing the coda shared by all the studied environments, they formed a cluster separating the single ponds rather than following common/overlapping seasonal patterns. The results suggest that local effects, particularly the specific composition and richness of phytoplankton assemblages, are as important as climate constraints.

show abstract

Phytoplankton dynamics in permanent and temporary Mediterranean waters: is the game hard to play because of hydrological disturbance?

Naselli-Flores

¹

,

Barone

²

2012

View full text Add to dashboard Cite

Only few scientific investigations have been carried out, to our knowledge, on phytoplankton in Mediterranean temporary ponds. To test the hypothesis that climate forcing is the main factor affecting dynamics and structure of planktic algae in these peculiar ecosystems, and to assess the importance of human impacts on this basic component of the aquatic biota, phytoplankton structure and dynamics were analysed in two temporary, long lasting (9 months), ponds, and in a permanent one. The three studied water bodies can be classified as mesoeutrophic, which show extended macrophyte beds and are subjected to one or more human impacts, such as eutrophication, fish and plant introduction, and garbage pollution. Phytoplankton samples were collected monthly over two different periods in each pond. The identified phytoplankton taxa were grouped in functional coda and non-parametric ordination methods were used to analyse their annual patterns. Results showed a well-defined sequence of coda, which followed a common seasonal pattern in all the studied ponds, when the ordination techniques were applied to a singular water body. This pattern was overlapping in the three studied environments without apparent influence exerted either by the environmental typology (e.g. permanent or temporary) or by human impacts. However, when the analyses were carried out by means of a single matrix containing the coda shared by all the studied environments, they formed a cluster separating the single ponds rather than following common/overlapping seasonal patterns. The results suggest that local effects, particularly the specific composition and richness of phytoplankton assemblages, are as important as climate constraints.

show abstract

Dynamics of plankton and fish in a subtropical temporary wetland: Rice fields

Cited by 12 publications

References 30 publications

Temporal Changes in Zooplankton Community Composition and Abundance in Chemical and Organic Rice Fields in Buri Ram Province, Thailand

Temporal Changes in Zooplankton Community Composition and Abundance in Chemical and Organic Rice Fields in Buri Ram Province, Thailand

Phytoplankton dynamics in permanent and temporary Mediterranean waters: is the game hard to play because of hydrological disturbance?

Phytoplankton dynamics in permanent and temporary Mediterranean waters: is the game hard to play because of hydrological disturbance?

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