Nutrients, light and phytoplankton succession in a temperate estuary (the Guadiana, south-western Iberia)

Domingues, Rita B.; Barbosa, Ana B.; Galvão, Helena M.

doi:10.1016/j.ecss.2005.02.017

Cited by 141 publications

(91 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This Bacillariophyta-Chlorophyta succession pattern in later spring is a general pattern, which has been observed in reservoir (Ostojic et al 2005) and estuarine systems (Domingues et al 2005). In the upstream region dominated by Chlorophyta, an obvious depletion of nitrogen was also observed, with the lowest DIN concentration of 4.28 mM at S13 on 28 April.…”

Section: Discussionmentioning

confidence: 93%

Spring phytoplankton blooms in Xiangxi Bay of Three-Gorges Reservoir: spatiotemporal dynamics across sharp nutrient gradients

Cai

2011

Journal of Freshwater Ecology

View full text Add to dashboard Cite

After the impoundment of Three-Gorges Reservoir, the specific hydrodynamics created sharp nutrient gradients in Xiangxi Bay. To discover how spring blooms in Xiangxi Bay respond to sharp nutrient gradients, we investigated the phytoplankton community composition and dynamics along nutrient gradients and analyzed the strategies of different types of phytoplankton in filling their niches. We observed a total of 148 taxa of 59 genera belonging to seven phyla. Phytoplankton concentration ranged from 0.03 Â 10 7 to 3.74Â10 7 cell L À1 with two pulses during the spring bloom period. Bacillariophyta was the predominant group, which accounted for 75.4% of total abundance. Canonical correlation analysis (CCA) revealed that phytoplankton occurred in optimal niches for their growth across the nutrient gradients. Specifically, species of Bacillariophyta were found in the region with Si:DIN41, and species of Cryptophyta, Chrysophyta, Euglenphyta, Pyrrophyta, and some of Chlorophyta were most abundant in the region with DIN:PO 4 P516. High abundances of Cyanophyta and some Chlorophyta were observed in the region where DIN:PO 4 P416. The CCA also indicated a potential nutrient limitation of Si on Bacillariophyta, of DIN on Cyanophyta and some Chlorophyta, and of PO 4 P on Cryptophyta, Euglenphyta, Pyrrophyta, and some Chlorophyta. Moreover, as a complement for the traditional Redfield ratio of 16N:1P in determining whether N or P limits a system, our study revealed that the stoichiometric ratio of 1Si:1DIN is an important criterion to determine limitation for diatoms.

show abstract

Section: Discussionmentioning

confidence: 93%

Spring phytoplankton blooms in Xiangxi Bay of Three-Gorges Reservoir: spatiotemporal dynamics across sharp nutrient gradients

Cai

2011

Journal of Freshwater Ecology

View full text Add to dashboard Cite

show abstract

“…If possible, species were determined onto the genus or species level and at least 300 phytoplankton cells were counted. Mean cell volume (μm 3 ·cell −1 ) was calculated using appropriate geometric configurations (Hillebrand et al 1999), after measuring 20 cells of each taxon with a calibrated ocular micrometer (Domingues et al 2005). Volume values were converted to biomass assuming 1 μm 3 equals to 1 pg (Eker and Kideys 2003).…”

Section: Phytoplankton Analysismentioning

confidence: 99%

“…In general, spatial and temporal variability in phytoplankton blooms is largely controlled by various physical and chemical factors such as nutrients, temperature, current speed and rainfall (Phlips et al 2002;Song et al 2004;Yin et al 2004;Calliari et al 2005;Domingues et al 2005;Ramdani et al 2009) with most factors being inter-related (Boyd 2002;Venables et al 2007). Nutrient availability has frequently outweighed other factors and has been a major controlling factor to influence successions of phytoplankton species abundance (Roelke et al 1999;Turley 1999;Liu et al 2005).…”

Section: Introductionmentioning

confidence: 99%

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

View full text Add to dashboard Cite

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.

show abstract

“…The bulk of the biomass is mainly comprised of microphytoplankton (>20 lm) and ultra-plankton (<8 lm) with the latter belonging to three major taxonomic groups: cyanobacteria, prochlorophytes and eukaryotic algae, which may in fact comprise major fraction of total photosynthetic biomass (Lindell and Post, 1995). In spite of the taxonomic composition, phytoplankton has been repeatedly demonstrated nutrient limited due to an alteration in N:P, Si:P and Si:N ratios (Yin et al, 2001;Domingues et al, 2005). According to the Redfield molar ratios between dissolved inorganic N, P and Si for phytoplankton growth in the ocean (Si:N:P = 16:16:1), there was Si-, P-limitation in the lagoon waters, whereas a large excess of nitrogen were observed.…”

Section: Dominance Of Brackish Water Cyanobacteria Species In the Lagoonmentioning

confidence: 99%

Occurrence of brackish water phytoplankton species at a closed coral reef in Nansha Islands, South China Sea

Shen

Tan

Huang

et al. 2010

Marine Pollution Bulletin

View full text Add to dashboard Cite

Nutrients, light and phytoplankton succession in a temperate estuary (the Guadiana, south-western Iberia)

Cited by 141 publications

References 57 publications

Spring phytoplankton blooms in Xiangxi Bay of Three-Gorges Reservoir: spatiotemporal dynamics across sharp nutrient gradients

Spring phytoplankton blooms in Xiangxi Bay of Three-Gorges Reservoir: spatiotemporal dynamics across sharp nutrient gradients

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

Occurrence of brackish water phytoplankton species at a closed coral reef in Nansha Islands, South China Sea

Contact Info

Product

Resources

About