Relationship between epipelon, epiphyton and phytoplankton in two limnological phases in a shallow tropical reservoir with high Nymphaea coverage

Santos, Thaís Rabelo dos; Castilho, Maria Carolina de Almeida; Henry, Raoul; Ferragut, Carla

doi:10.1007/s10750-019-04172-2

Cited by 7 publications

(5 citation statements)

References 38 publications

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“…Mean and standard deviation of the environmental variables measured during the dry and rainy periods in the Ninfeias reservoir from January to December 2014. Modified from Santos et al (2020).…”

Section: Resultsmentioning

confidence: 99%

“…These tiny organisms do not exert strong grazing pressure on phytoplankton, which had high biomass with a dominance of Chrysophyceae and Dinophyceae. These algal classes were predominantly constituted of flagellated species, such as Mallomonas sp., Chromulina spp., Peridinium gatunense Nygaard, Parvodinium umbonatum (F.Stein) Carty (Santos et al, 2020), which have specific predation strategies (Wehr & Sheath, 2003). However, the G2 group (filter cladocerans), abundant in the dry period in the pelagic zone, seems to exert significant herbivory pressure on algae when diatom dominance occurred.…”

Section: Discussionmentioning

confidence: 99%

“…In the present study, we evaluated changes in density and biomass of zooplankton functional groups and their relationship with algal communities in horizontal zonation (pelagic, sublittoral, and eulittoral zones) of a shallow reservoir. Considering that pelagic, sublittoral and eulittoral zones have different environmental characteristics (Santos et al, 2020), our hypothesis is zooplankton functional groups are associated positively with fluctuations in the total and relative biomass of phytoplankton groups in horizontal reservoir zonation. The present study contributes to elucidating the role of zooplankton functional groups in lakes and shallow tropical reservoirs, especially as an indicator of environmental changes.…”

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confidence: 97%

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Role of zooplanktonic functional groups in a shallow mesotrophic reservoir

et al. 2023

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Aim Zooplankton functional groups play an important role in lake functioning and can readily respond to environmental changes and may be associated with phytoplankton changes. In warmer regions, zooplankton species have a smaller body size, which decreases their grazing capacity, attenuating top-down control throughout phytoplankton. We evaluated changes in density and biomass of zooplankton functional groups and their relationship with algal groups in horizontal reservoir zonation (pelagic, sublittoral, and eulittoral zones) of the shallow reservoir. We hypothesize that the density and biomass of zooplankton functional groups are associated with fluctuations in the phytoplankton groups in horizontal reservoir zonation. Methods Changes in the structure of the zooplankton functional group and the controlling limnological variables were verified at three sampling stations: pelagic, sublittoral, and eulittoral zones in a mesotrophic reservoir. Results Zooplankton species were distributed in seven functional groups. The density and biomass of zooplankton functional groups were not clearly associated with biomass variations of phytoplankton groups. However, the zooplankton functional groups were associated with horizontal reservoir zonation, where specific groups were found in the pelagic, sublittoral, and eulittoral zones. Conclusions The zooplankton functional groups were related to the horizontal zonation of the reservoir but were not associated with changes in the phytoplankton groups due to the dominance of small organisms.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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confidence: 97%

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Role of zooplanktonic functional groups in a shallow mesotrophic reservoir

et al. 2023

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“…In lake ecosystems, epiphytic communities constitute one of the basic elements in the food networks, and the productivity of epiphytic organisms may be equal to or even exceed the phytoplankton and macrophyte productivity ( [59] and the references therein). Interactions between benthic algae, phytoplankton and macrophytes can determine the nature of the entire ecosystem as well as the ecosystem responses to the changes in environmental conditions [60]. Epiphytic algae can help by reducing water movement and can be a source of nutrients via the decomposition processes to enhance macrophyte growth [61].…”

Section: Discussionmentioning

confidence: 99%

Comprehensive Insight into Lake Nasser Environment: Water Quality and Biotic Communities—A Case Study before Operating the Renaissance Dam

Goher

Napiórkowska‐Krzebietke

Aly

et al. 2021

Water

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This study focused on the monitoring and assessment of aquatic ecosystem functioning based on the abiotic and biotic features of Lake Nasser in the post-flood and pre-flood periods as the last ones before water storing behind the Grand Ethiopian Renaissance Dam. The physicochemical parameters, distribution and structure of biotic communities, including bacteria, phytoplankton, zooplankton, macrophytes, epiphytes and fish were analyzed at 15 sites. The values of most parameters (primarily temperature, total suspended solids, pH, orthophosphates, carbonates, sulphates and some cations) were higher in the pre-flood period, whereas higher values of conductivity, total dissolved solids, total solids, nitrites, nitrates, chemical oxygen demand, bicarbonates and chlorophyll a were recorded in the post-flood period. Cyanobacteria-dominated phytoplankton and total coliform bacteria were more abundant in the pre-flood period, and especially at sites 10–15, whereas higher abundances of zooplankton were recorded in the post-flood period. All these changes in parameters were significantly differentiated, and only the concentrations of dissolved oxygen, biochemical oxygen demand, ammonium and silicates were at similar level in both periods. The study also indicated that environmental factors had affected the macrophyte distribution and the adaptation of the invasive species Myriophyllum spicatum to thrive under different environmental factors in the lake. Besides, macrophytes provided the habitat to other aquatic organisms, especially epiphytes, and also helped maintaining the good water quality, nutrient cycling and stabilizing rivers’ and lakes’ banks. Generally, these conditions were rather favorable for biological processes and fish production.

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“…Microbial interactions mediated by chemical substances, e.g., allelopathy, seem to be a widespread strategy in both planktonic and benthic communities ( Leflaive and Ten-Hage, 2007 , 2009 ). So far, this concept has been frequently studied, in particular for interactions of pelagic bacteria with other organisms in pelagic environments, yet, only some studies aimed to decipher the connection of autotrophic periphyton with pelagic communities ( Do Nascimento Filho et al, 2019 ; Dos Santos et al, 2020 ).…”

Section: Interactions Between Auto- and Heterotrophs In Aquatic Micromentioning

confidence: 99%

New Methods, New Concepts: What Can Be Applied to Freshwater Periphyton?

Gubelit

Grossart

2020

Front. Microbiol.

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Microbial interactions play an essential role in aquatic ecosystems and are of the great interest for both marine and freshwater ecologists. Recent development of new technologies and methods allowed to reveal many functional mechanisms and create new concepts. Yet, many fundamental aspects of microbial interactions have been almost exclusively studied for marine pelagic and benthic ecosystems. These studies resulted in a formulation of the Black Queen Hypothesis, a development of the phycosphere concept for pelagic communities, and a realization of microbial communication as a key mechanism for microbial interactions. In freshwater ecosystems, especially for periphyton communities, studies focus mainly on physiology, biodiversity, biological indication, and assessment, but the many aspects of microbial interactions are neglected to a large extent. Since periphyton plays a great role for aquatic nutrient cycling, provides the basis for water purification, and can be regarded as a hotspot of microbial biodiversity, we highlight that more in-depth studies on microbial interactions in periphyton are needed to improve our understanding on functioning of freshwater ecosystems. In this paper we first present an overview on recent concepts (e.g., the "Black Queen Hypothesis") derived from state-of-the-art OMICS methods including metagenomics, metatranscriptomics, and metabolomics. We then point to the avenues how these methods can be applied for future studies on biodiversity and the ecological role of freshwater periphyton, a yet largely neglected component of many freshwater ecosystems.

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Relationship between epipelon, epiphyton and phytoplankton in two limnological phases in a shallow tropical reservoir with high Nymphaea coverage

Cited by 7 publications

References 38 publications

Role of zooplanktonic functional groups in a shallow mesotrophic reservoir

Role of zooplanktonic functional groups in a shallow mesotrophic reservoir

Comprehensive Insight into Lake Nasser Environment: Water Quality and Biotic Communities—A Case Study before Operating the Renaissance Dam

New Methods, New Concepts: What Can Be Applied to Freshwater Periphyton?

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