What makes a cyanobacterial bloom disappear? A review of the abiotic and biotic cyanobacterial bloom loss factors

Harmful Algae, Journal Year: 2024, Volume and Issue: 133, P. 102599 - 102599

Published: Feb. 9, 2024

Cyanobacterial blooms present substantial challenges to managers and threaten ecological public health. Although the majority of cyanobacterial bloom research management focuses on factors that control initiation, duration, toxicity, geographical extent, relatively little role loss processes in how these are regulated. Here, we define a process terms population dynamics as any removes cells from population, thereby decelerating or reducing development extent blooms. We review abiotic (e.g., hydraulic flushing oxidative stress/UV light) biotic allelopathic compounds, infections, grazing, resting cells/programmed cell death) known govern loss. found dominant depend several system specific including genera-specific traits, situ physicochemical conditions, microbial, phytoplankton, consumer community composition. also address context discuss perspectives predicting changing climate may directly indirectly affect A deeper understanding their underlying mechanisms help mitigate negative consequences improve current strategies.

Language: Английский

---

Phytoplankton Communities’ Response to Thermal Stratification and Changing Environmental Conditions in a Deep-Water Reservoir: Stochastic and Deterministic Processes

Sustainability, Journal Year: 2024, Volume and Issue: 16(7), P. 3058 - 3058

Published: April 6, 2024

Thermal stratification has become more extensive and prolonged because of global warming, this change had a significant impact on the distribution patterns phytoplankton communities. However, response community structures assembly processes to thermal is not fully understood. We predicted that structure communities would be affected by among water layers associated with environmental condition changes, reflecting certain in temporal spatial scales. Phytoplankton from Danjiangkou Reservoir were collected October 2021 July 2022 verify prediction. During sampling period, remained thermally stratified stability. The composition surface layer significantly differed both thermocline bottom layer. phenomenon pattern nitrogen phosphorus and, thus, structures. Deterministic greater influence layers. In contrast, stochastic prevalent community. within exhibited broader niche range than layers, showing notable dissimilarity Canonical correspondence analysis (CCA) revealed vertical distributions correlated NH4+-N, pH, temperature (WT). summary, study explained deep-water reservoirs during period. Additionally, explored potential using stratified-state under subtropical–warm temperate climate as indicators context warming.

Language: Английский

---

The bioavailability and component characteristics of the aging dissolved organic matter (DOM) from the macroalgae Ulva prolifera in seawater

Marine Environmental Research, Journal Year: 2025, Volume and Issue: 204, P. 106946 - 106946

Published: Jan. 4, 2025

Language: Английский

---

Novel insights in seasonal dynamics and co-existence patterns of phytoplankton and micro-eukaryotes in drinking water reservoir, Northwest China: DNA data and ecological model

The Science of The Total Environment, Journal Year: 2022, Volume and Issue: 857, P. 159160 - 159160

Published: Oct. 3, 2022

Language: Английский

---

Rainstorm events trigger algal blooms in a large oligotrophic reservoir

Journal of Hydrology, Journal Year: 2023, Volume and Issue: 622, P. 129711 - 129711

Published: May 25, 2023

Language: Английский

---

Organic compounds drive growth in phytoplankton taxa from different functional groups

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2016)

Published: Feb. 7, 2024

Phytoplankton are usually considered autotrophs, but an increasing number of studies show that many taxa able also to use organic carbon. Acquiring nutrients and energy from different sources might enable efficient uptake required substances provide a strategy deal with varying resource availability, especially in highly dynamic ecosystems such as estuaries. In our study, we investigated the effects 31 carbon on growth (proxied by differences cell counts after 24 h exposure) 17 phytoplankton strains Elbe estuary spanning four functional groups. All were make at least 1 up 26 compounds for growth. Pico-sized green algae

Language: Английский

---

Vertical distribution rules and factors influencing phytoplankton in front of a drinking water reservoir outlet

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 902, P. 166512 - 166512

Published: Aug. 22, 2023

Language: Английский

---

Dynamic adaptation of phytoplankton vertical migration to changing grazing and nutrient conditions

Hydrobiologia, Journal Year: 2024, Volume and Issue: 851(15), P. 3639 - 3663

Published: April 13, 2024

Abstract Despite the ubiquitous occurrence of vertical migration phytoplankton its quantitative significance remains poorly known. We eliminated a dense Daphnia population in pond by introducing whitefish fingerlings, and assessed effects on dominating motile phytoplankton. At highest abundance , cryptophytes reduced grazing losses staying hypolimnion day night, but Mallomonas species armoured silica bristles remained epilimnion . After fish introduction, was released from pressure, allowing to occur also at noon. same time, increased biomass exacerbated nutrient depletion. Cryptophytes compensated for that migrating into anoxic hypolimnion, whereupon their growth rates increased. The collapse associated with temporary increase regeneration enzyme activities decreases total concentration bacterial whole water column. Our results show can dynamically modify balance between exploitation various resources risk becoming eaten. Hypolimnetic be quantitatively more important than previously assumed.

Language: Английский

---

Influences of dissolved organic matter on phytoplankton functional diversity and resource use efficiency differ in three lakes with contrasting trophic state and depth

Aquatic Sciences, Journal Year: 2025, Volume and Issue: 87(2)

Published: Feb. 3, 2025

Language: Английский

---

Associations of anthropogenic activity and tributaries with the physicochemical, nutrient and microbial composition of the Ganga (Ganges) River, India

Water Research, Journal Year: 2025, Volume and Issue: 278, P. 123374 - 123374

Published: Feb. 25, 2025

The Ganga River (known internationally as the Ganges) is one of world's most prominent rivers, running from Himalayas to Bay Bengal and supporting livelihoods > 40 % India's 1.4 billion population. regionally globally important, agriculture industry, yet faces potentially detrimental water quality challenges arising runoff discharge increasing urbanization, industry agriculture. A ∼ 2700 km longitudinal survey nutrient microbial quality, including phytoplankton composition, was undertaken in November 2019. aim investigate if how anthropogenic activities (e.g. urbanisation, agriculture) tributary convergence (potentially reflecting both human activity flow influences) affect shift physicochemical, nutrient, parameters along river continuum. Segmented regression identified four zones distinct nutrient/microbial characteristics River, with breakpoints located near Kanpur, Varanasi downstream Farakka Barage, at distances 1020, 1500 2350 Himalayan source. Population density, land use urban cover were associated selected parts catchment, elevated chemical concentrations likely agriculture, sewage inputs. Some areas Kanpur Varanasi), converging tributaries Yamuna Varuna) barrages Farakka) changes availability, activity/abundance modelled discharge, driving apparent relevant locations. Downstream shifts observed throughout This information can help prioritize locations for targeted monitoring and/or remediation interventions has illustrated an approach quantify impacts inputs on major systems, such River.

Language: Английский

---