Seasonal succession of cladocerans and phytoplankton and their interactions in a shallow eutrophic lake (Lake Vela, Portugal)

Abrantes, Nélson; Antunes, Sara C.; Pereira, Mário Jorge; Gonçalves, Fernando

doi:10.1016/j.actao.2005.07.006

Cited by 145 publications

(92 citation statements)

References 44 publications

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“…The decline of zooplankton density in spring and winter was probably attributable to the top-down control from planktivorous fishes (Figure 6b). These results are in agreement with many studies (Abrantes et al, 2006;Medley and Havel, 2007).…”

Section: Discussionsupporting

confidence: 94%

“…The development of cyanobacteria can explain the unobserved spring peak of zooplankton in this reservoir. Similar results were found by Abrantes et al (2006). The peak of zooplankton, especially the cladocera, occurs in autumn as a consequence of the nutrient replenishment (bottom-up control) and the subsequent development of cyanobacteria.…”

Section: Discussionsupporting

confidence: 76%

“…The "top-down" effect of predators on the lower trophic levels is a significant factor in structuring communities in freshwater ecosystems (McQueen et al, 1986;Vanni et al, 1990). Zooplankton constitutes the food source of organisms at higher trophic levels (Abrantes et al, 2006;Mitra et al, 2007). Therefore, planktivorous fish are well known to impact species composition of zooplankton (Medley and Havel, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Seasonal dynamics of plankton communities coupled with environmental factors in a semi arid area: Sidi Sad reservoir (Center of Tunisia)

Sellami

Romdahane

Guermazi

et al. 2012

Afr. J. Biotechnol.

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) at a depth of 10 m. The copepods (56% of total zooplankton abundance) and cladocera (42% of total zooplankton abundance) were the most abundant groups. The physico-chemical factors, especially the water temperature (r = 0.53, p = 0.027, n = 16) and dissolved oxygen (r = -0.59, p = 0.03, n = 16), influence directly the zooplankton community. It was suggested that in Sidi Saâd reservoir, both the top-down and bottom-up regulations account for the regulation of zooplankton. The phytoplankton was the factor responsible for the structure and seasonal dynamics of the zooplankton community, which are well related to changes in algae diversity and abundance, noting that cyanobacteria have major impacts. The "top-down" effect of planktivorous fish on the zooplankton is a significant factor affecting the plankton community's dynamics in this reservoir.

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Section: Discussionsupporting

confidence: 94%

Section: Discussionsupporting

confidence: 76%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Seasonal dynamics of plankton communities coupled with environmental factors in a semi arid area: Sidi Sad reservoir (Center of Tunisia)

Sellami

Romdahane

Guermazi

et al. 2012

Afr. J. Biotechnol.

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“…In general, temperature was thought to be the most important factor influencing the phytoplankton succession (Abrantes et al 2006;Ke et al 2008). However, our results showed that heavy rainfalls were the most important factors for the changes of phytoplankton community in spring in Xiangxi Bay.…”

Section: Discussionmentioning

confidence: 53%

Phytoplankton variation and its relationship with the environment in Xiangxi Bay in spring after damming of the Three-Gorges, China

Zhou

Zhao

et al. 2010

Environ Monit Assess

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Following the completion of the ThreeGorges Dam, there was a strong spring phytoplankton bloom in Xiangxi Bay of Three-Gorges Reservoir. However, our knowledge of relationship between spring phytoplankton bloom and environmental factors was still limited. In this study, phytoplankton species composition, biomass, chlorophyll a concentration and environmental factors at two sampling sites in Xiangxi Bay were investigated during 25 March to 18 May 2007. The Xiangxi Bay was eutrophic with the lowest values of total nitrogen and total phosphorus being 0.80 and 0.07 mg/L, respectively. A total of 66 algal taxa belonging to seven phyla and 45 genera were identified. Peridiniopsis niei Liu was the most abundant species which preferred standing water. Canonical correspondence analysis and correlation analysis revealed that nitrate was significantly associated with phytoplankton growth. The phytoplankton chlorophyll a concentration was correlated significantly negatively with nitrate concentration, and nitrate concentration was very low during bloom periods. Heavy rainfall was the main reason of phytoplankton chlorophyll a concentration and biomass decreasing and blooms disappearing. In addition, heavy rainfall also brought more nitrate into the Bay which provided sufficient nitrogen source for blooms occurring again.

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“…The composition of plankton communities displays marked seasonality for different types of lake morphology and trophic states, this pattern of plankton species succession is driven by interacting forces primarily physical changes, resource availability and interactions between the species present (Sommer et al, 1986;Hart, 2004;Abrantes et al, 2005). Major zooplankton forms vary in their relative abundance and they belong to the groups: Protozoa, Rotifera & Crustacea.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Present and Past Cladoceran Diversity in Manasbal Lake of Kashmir (India)

Naik¹,

Mh²,

Bhat³

et al. 2017

fisheriessciences

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Abstract:Present research was carried out to study the diversity of Cladocera in Manasbal Lake and compare it with previous studies. In present study, 21 species of cladocerans were recorded belonging to 5 families: Chydoridae, Daphnidae, Bosminidae, Macrothricidae and Sididae. Chydorids were responsible for major cladoceran diversity followed by daphnids. The frequently species found were Chydorus sphaericus, Graptoleberis testudinaria, Daphnia pulex, Ceriodaphnia reticulata and Bosmina longirostris. While comparing the cladoceran diversity of present study with earlier studies, many species present earlier were not found in present study due to increasing pollution of the lake. However, five species (Chydorus sphaericus, Graptoleberis testudinaria, Bosmina longirostris, Sida crystallina and Diaphanosoma brachyurum) recorded earlier were still present and were reported by all authors. This depicted that these species can tolerate wide range of fluctuations in environmental changes. Further, Daphnia pulex was not recorded in earlier studies but was recorded latter which also showed increased pollution in the lake as this species prefers polluted waters. Environmental changes have great influence on distribution of cladocerans and therefore, they act as excellent indicators of pollution. respectively, rest of the sites (SI to SIV) were sampled from the surface only (Figure 1). Keywords Water analysisThe sampling was carried out on monthly basis for a period of one year (September 2014 to August 2015). Water samples were analyzed in accordance with Welch (1948), Golterman and Clymo (1969), Golterman et al. (1978), Mackereth et al. (1978), Adoni et al. (1985) and American Public Health Association (2005). Biological analysisQualitative study of the Cladocera was carried out by hauling a standard plankton net (60 meshes/cm) at selected sites so as to cover maximum area (Tait et al., 1984). A plankton tube was attached to the lower end of the conical net and the material collected during hauling was preserved by adding 4% formalin at the collection site. Qualitative studies were carried out up to the genus/species level using the standard keys given by Pennak (1978); Edmondson (1992) and Battish (1992). For the quantitative studies Ruttner's sampler was used. Ten litres of water from each site, procured by the sampler, were sieved through the plankton net. One ml of sample was placed on Sedgewick Rafter Counting Cell of 1 ml capacity and studied under compound microscope for quantitative enumeration. For accuracy the counting was done in triplicate and average of three counts was used to calculate the population dynamics of various species and hence of total zooplankton in individuals per litre of water by the formula given by Welch (1948).Where, n=number of individuals per litre of water.a=average number of individuals in 1 ml of the concentrated sample.c=volume of the concentrated sample. l=volume of the original water sample sieved (10 litres). Results and DiscussionThe different physico-chemical parameters of w...

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Seasonal succession of cladocerans and phytoplankton and their interactions in a shallow eutrophic lake (Lake Vela, Portugal)

Cited by 145 publications

References 44 publications

Seasonal dynamics of plankton communities coupled with environmental factors in a semi arid area: Sidi Sad reservoir (Center of Tunisia)

Seasonal dynamics of plankton communities coupled with environmental factors in a semi arid area: Sidi Sad reservoir (Center of Tunisia)

Phytoplankton variation and its relationship with the environment in Xiangxi Bay in spring after damming of the Three-Gorges, China

Comparative Study of Present and Past Cladoceran Diversity in Manasbal Lake of Kashmir (India)

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