Will nutrient and light limitation prevent eutrophication in an anthropogenically-impacted coastal lagoon?

Domingues, Rita B.; Guerra, Cátia C.; Barbosa, Ana B.; Galvão, Helena M.

doi:10.1016/j.csr.2017.05.003

Cited by 35 publications

(31 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Small cells have physiological advantages that confer them a high competitiveness to acquire and use nutrients under limiting conditions (Raven, 1998). They are especially competitive in warmer waters and under low Navailability as observed during the summer period (Bec et al, 2005;Leruste et al, 2016;Domingues et al, 2017). Moreover, they are able to use nitrate, ammonium as well as organic N-sources in a highly efficient way (Domingues et al, 2011), and are hardly inhibited by occasionally occurring high ammonium concentrations (Collos and Harrison, 2014).…”

Section: Accepted Manuscriptmentioning

confidence: 99%

“…These competitive trade-offs may thus explain the competitive exclusion of the larger cells by the PC-cyanos in September. Shift between diatoms and dinoflagellates to picophytoplankton from spring to late summer frequently occur in coastal aquatic systems with the shift of available N forms, from NO 3 -(>88% of the DIN in the two stations in November-December 2013 and April 2014) to NH 4 + (>85 % of the DIN in the two stations in September 2014) (Glibert et al, 2015;Domingues et al, 2017). However, ambient nutrient concentrations are measures of the residual nutrients after biogeochemical activity, and may not reflect the real available nutrient concentrations for phytoplankton growth.…”

Section: Accepted Manuscriptmentioning

confidence: 99%

See 1 more Smart Citation

Physiological and behavioral responses of phytoplankton communities to nutrient availability in a disturbed Mediterranean coastal lagoon

Leruste

Pasqualini

Garrido

et al. 2019

Estuarine, Coastal and Shelf Science

View full text Add to dashboard Cite

Short-term bioassays were conducted in Biguglia lagoon (Corsica) to study the physiological and behavioral responses of phytoplankton to N-and P-availability. Natural communities were collected in two stations representative of the two sub-basins, at three periods with contrasting environmental characteristics to address the impact of seasonal variability. These samples were separately enriched with a full N and P enrichment, and with enrichments minus N or minus P. Phytoplankton size structuration, diversity, and growth of the total phytoplankton, the micro-, nano-and ultraphytoplankton were evaluated using spectrofluorimetry, and optical microscopy. Results showed that the communities were fueled by NO3− in the wet periods (autumn and spring) and NH4+ in summer. The phytoplankton communities displayed highest cell size in autumn, with high abundances of nanoflagellates, and smallest cell size in summer with a large dominance of phycocyanin-rich picocyanobacteria. Blooms of dinoflagellates also occurred during the wet periods, coinciding with high N:P ratios. The full enrichment has not stimulated phytoplankton growth in autumn, suggesting the importance of other controlling factors such as light, a possible NH4+ inhibition or the use of mixotrophic abilities. In spring, communities have displayed single P-limitation in the northern basin and different N and P co-limitations in the southern basin. In summer, the full enrichment consistently stimulated the growth of all cell sizes. The communities showed high N and P co-limitations, which is consistent with growing observations in aquatic ecosystems, and reflects the different functional responses of phytoplankton communities to the nutrient availability. Please note that this is an author-produced PDF of an article accepted for publication following peer review. The definitive publisher-authenticated version is available on the publisher Web site.

show abstract

Section: Accepted Manuscriptmentioning

confidence: 99%

Section: Accepted Manuscriptmentioning

confidence: 99%

Physiological and behavioral responses of phytoplankton communities to nutrient availability in a disturbed Mediterranean coastal lagoon

Leruste

Pasqualini

Garrido

et al. 2019

Estuarine, Coastal and Shelf Science

View full text Add to dashboard Cite

show abstract

“…Consequently, ANOVA post hoc analysis revealed signi cant variations (p < 0.05) in the winter temperature (9.31 ± 1.13°C) relative the other seasons coupled with high dissolved oxygen (DO) of 11.39 ± 2.0 mgL − 1 in winter as shown in Table 1. A positive response of the ecosystem to the light enrichment particularly in winter has been previously reported (Domingues et al, 2017). Again, Tomasky et al, (1999) while studying nutrient limitation of phytoplankton growth in Childs River, an estuary in Waquoit Bay, MA, USA reported no response to nutrient additions during the colder months.…”

Section: Seasonal Dynamics In Biomass Production As Chl-amentioning

confidence: 85%

Spatial Biomass Production And Seasonal Nutrient Limitation Transitions In A Tributary of The Three Gorges Reservoir, China

Nwankwegu

Zhang

et al. 2021

Preprint

View full text Add to dashboard Cite

The freshwater ecosystem characteristics in terms of nutrient inventory across seasons, spatial variations of chl-a biomass, and the phytoplankton community structure are prudent ecological assessment indices for a bloom management protocol. We evaluated the spatial and seasonal chl-a distribution under different nutrient conditions and phytoplankton community structure in a eutrophic Three Gorges reservoir tributary China. Result showed significant variations in biomass production with the mainstream reaches severely affected. The nutrient addition bioassay demonstrated significant stimulations on growth in both autumn and summer. The nutrient limitation pattern shifted from P in autumn and spring to N limitation during summer. Combined additions of trace metals with N, P, and Si in autumn and Fe alone enrichment in summer and spring showed maximum productivity. The phytoplankton community structure demonstrated strong sensitivities to seasonal variabilities with regime shift from Cyanophyta, dominated by the toxic and hypoxia generating, Microcystis spp in both autumn and summer, the Cryptophyta dominated by the Chroomonas acuta in spring to the Bacilliariophyta dominated by the genera, Cyclotella in winter. This reflected the ability of the Bacilliariophyta to thrive under a low-temperature condition. Combined N&P led to significant growth stimulation in summer while P alone controlled the bulk of the growth in autumn. The study points to the need for extending mitigation steps to the mainstream towards achieving lasting bloom management solution in the impacted tributary.

show abstract

“…(4) Clay particles are usually negatively charged and have a high cation-adsorption capacity, algae cells can be adhered to suspended matter and the sinking due to aggregation with SPM is another cause for algal growth inhibition (Guenther and Bozelli, 2004). Therefore, the response of phytoplankton to nutrient inputs is less likely to be found in turbid and eutrophic estuarine ecosystems (Mallin et al, 1999;Painting et al, 2007;Domingues et al, 2017). Cruise surveys in large estuaries (e.g., Amazon estuary, Changjiang estuary, Mississippi estuary) showed that maximum chlorophyll concentration and primary production were generally observed in the "optimal growth region" at intermediate salinities (DeMaster et al, 1996;Song et al, 2017;Jiang et al, 2019), where the concentrations of SPM and nutrient were both lower compared to the river end member.…”

Section: Introductionmentioning

confidence: 99%

“…It is clear that both nutrient and SPM play an important role in affecting the phytoplankton growth in estuarine and coastal waters. Although the separate effects of SPM and nutrient on phytoplankton growth have previously been described, the studies investigating their combined effects are still limited (Leonardos and Geider, 2004;Domingues et al, 2017;Wang et al, 2019), especially considering their substantial variability in dynamic coastal environments.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Suspended Particulate Matter, Nutrient, and Salinity on the Growth of Amphidinium carterae Under Estuary Environmental Conditions

Jiang

Tong

et al. 2021

Front. Mar. Sci.

View full text Add to dashboard Cite

The environmental conditions in estuaries display distinct variability along the river-ocean mixing continuum from turbid, eutrophic freshwater to clear, oligotrophic offshore oceanic water. In order to understand the effects of suspended particulate matter (SPM), nutrient, and salinity on phytoplankton growth, this study investigated the response of a harmful dinoflagellate (Amphidinium carterae Hulburt) to the ecological gradients in estuary environments. Rapid nutrient uptake and growth of A. carterae were detected in the nutrient-rich clear water, while nutrient concentration had little impact on the cellular chlorophyll a (Chl-a) content at the stationary phase. Light attenuation caused by SPM not only inhibited the specific growth rate of A. carterae but also prolonged its adaption period in turbid water, resulting in a delayed and weakened growth response. The elevated cellular Chl-a content under high SPM conditions resulting from photo-acclimation led to the decoupling of cell density and Chl-a concentration, indicating that Chl-a is not a reliable indicator for phytoplankton abundance in turbid environments. The combined effect of SPM and nutrient on specific growth rate of A. carterae can be explained by the comparative effect model, while the multiplicative effect model better predicted their interactive effect on the growth inhibitory rate (GIR). There is a transit of dominant limiting factor for phytoplankton growth along the salinity gradient in estuary environments. Salinity (for marine phytoplankton cannot survive under low salinity condition) and SPM are the dominant limiting factors at low salinities in nearshore turbid environments, while nutrient depletion exerts the dominant inhibitory effect in high salinity offshore water. Depending on the balance between enhancing nutrient limitation and reducing light limitation with increasing salinity, blooms most likely occur in the “optimal growth region” at intermediate salinities where light and nutrient are both suitable for phytoplankton growth.

show abstract

Will nutrient and light limitation prevent eutrophication in an anthropogenically-impacted coastal lagoon?

Cited by 35 publications

References 78 publications

Physiological and behavioral responses of phytoplankton communities to nutrient availability in a disturbed Mediterranean coastal lagoon

Physiological and behavioral responses of phytoplankton communities to nutrient availability in a disturbed Mediterranean coastal lagoon

Spatial Biomass Production And Seasonal Nutrient Limitation Transitions In A Tributary of The Three Gorges Reservoir, China

The Effects of Suspended Particulate Matter, Nutrient, and Salinity on the Growth of Amphidinium carterae Under Estuary Environmental Conditions

Contact Info

Product

Resources

About