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61,005 resultsShowing papers similar to Use of multivariate analysis to identify phytoplankton bioindicators of stream water quality in the mono-modal equatorial agro-ecological zone of Cameroon
ClearMain predictors of phytoplankton occurrence in lotic ecosystems
This paper is not relevant to microplastics research; it examines the environmental and landscape factors controlling phytoplankton community composition in a Brazilian micro-watershed over three years.
Phytoplankton in headwater streams: spatiotemporal patterns and underlying mechanisms
Researchers compared phytoplankton communities in headwater streams to those in downstream plain rivers to understand patterns of algal diversity in less-impacted waterways. They found that headwater streams showed lower spatiotemporal variability in phytoplankton communities due to limited nutrients and strong water flow. The study reveals that these conditions actually promote greater phytoplankton diversity and provide new insights for ecological conservation of headwater ecosystems.
Assessing land-use impacts on a 5th-order tropical river using multiple environmental indicators
Researchers combined multiple environmental indicators to assess the health of a tropical river system in Brazil affected by land-use change from agriculture and urbanization. Rivers in degraded landscapes also carry higher microplastic loads, and multi-indicator approaches provide a more complete picture of ecosystem health.
Comparison of Phytoplankton Composition and Abundance (River, Estuary dan Coast) as Potential Water Contamination Bio-Indicators in Tallo Watershed Area
Researchers compared phytoplankton composition and abundance across river, estuary, and coastal stations in the Tallo watershed area of Indonesia, identifying four algal classes and evaluating their potential as bio-indicators of water contamination in each zone.
Phytoplankton characterization in a tropical tidal river impacted by a megacity: the case of the Saigon River (Southern Vietnam)
Scientists studied how phytoplankton communities vary seasonally and spatially in the Saigon River, Vietnam, finding that urban pollution from Ho Chi Minh City significantly shapes which species dominate. The study provides a baseline for tracking ecological change in a highly impacted tropical river.
Water Quality Assessment of Inland Waters in Cartagena de Indias – Colombia, Using Multivariate Statistics
Researchers assessed water quality in four inland water bodies in Cartagena de Indias, Colombia over the period 2008-2022, analyzing parameters including dissolved oxygen, BOD, COD, total coliforms, chlorophyll, and total phosphorus using descriptive and multivariate statistical methods to characterize long-term pollution trends in urban coastal waters.
Variations of surface water quality in selected tidal creeks of Sagar Island, Indian Sundarban eco-region: a multivariate approach
Researchers monitored water quality in tidal creeks of India's Sundarbans mangrove region for a full year, finding that salinity, turbidity, and dissolved oxygen varied most dramatically across seasons and were heavily influenced by monsoon runoff and boat traffic. The baseline data provides a foundation for managing water quality in this ecologically sensitive and biologically rich estuary.
Monitoring of Rivers and Streams Conditions Using Biological Indices with Emphasis on Algae: A Comprehensive Descriptive Review toward River Management
This comprehensive review examines algal communities as biological indicators of river and stream health, covering how algal indices respond to changes in nutrient levels, salinity, flow regime, and other environmental variables relevant to river management and ecological assessment.
Evaluacion de la calidad de agua mediante un analisis multivariante en los esteros del Golfo de Fonseca, Honduras.
Researchers analyzed water quality data from eight monitoring sites in the Gulf of Fonseca esteros in Honduras (2000-2015) using principal component analysis and cluster analysis, identifying three significant water quality groups with nitrogen, phosphorus, BOD, and alkalinity explaining the greatest variance as indicators of poor water quality.
Assessment of stream quality and health risks in Indonesian river systems: A social analysis and water quality index approach
Researchers assessed water quality in three Indonesian rivers used by local communities, finding microplastics — primarily polyethylene and polypropylene — alongside elevated levels of iron, lead, and manganese, with residents reporting rising rates of skin disease and diarrhea linked to polluted water use.
Effects of biofouled plastics on phytoplankton community assembling and water chemistry: pilot study and implications for freshwater environments
Researchers conducted a pilot laboratory study exposing a five-species freshwater phytoplankton community to pristine and biofouled polypropylene fragments to investigate whether plastic acts as a carrier for algal species dispersal and to assess effects on water biodiversity and chemistry in freshwater environments.
Comparison of the Composition and Abundance of Phytoplankton Based on Different Land Use in the Cisadane River, Tangerang Regency
This paper is not about microplastics; it surveys phytoplankton species composition and abundance in the Cisadane River, Indonesia, across sites with different land use types, linking community diversity to water quality parameters like pH and transparency.
The microbial community and functional indicators response to flow restoration in gradient in a simulated water flume
Researchers examined how microbial community structure and functional indicators respond to gradient flow restoration in a simulated water flume, finding that flow regime significantly influences river ecological systems including functional indicators and microbial community composition.
Impacts of Water Pollution on Ecosystems and Biological Diversity: Case of Oued Soummam (Algeria)
Not relevant to microplastics — this study assesses water quality and biodiversity impacts in an Algerian river (Oued Soummam) using physicochemical parameters, focusing on industrial and agricultural pollution rather than plastics.
Water Quality Analysis and Its Impact on Biodiversity in Freshwater Ecosystems
Researchers measured physicochemical water quality parameters and biological communities at five freshwater sites with varying degrees of anthropogenic disturbance, using correlation analysis, PCA, and cluster analysis to link water quality to aquatic biodiversity. They found strong positive correlations between dissolved oxygen and species richness, and significant negative associations between BOD, nitrate, heavy metals, and biodiversity, concluding that degraded water quality directly compromises freshwater ecosystem function.
Effects of water quality and seasonality on Zooplankton responses
This review examines how water quality parameters—temperature, dissolved oxygen, pH, salinity, and nutrient levels—and seasonal variation influence zooplankton abundance, diversity, and physiological responses. The authors synthesize evidence showing that zooplankton are sensitive bioindicators of environmental change in freshwater and marine ecosystems.
Community Structure of Benthic Macroinvertebrates as Bioindicators of Water Quality in the Upstream Setail River, Banyuwangi, East Java, Indonesia
Researchers assessed the community structure of benthic macroinvertebrates as bioindicators of water quality in the upstream reach of the Setail River in Banyuwangi, East Java, Indonesia, which has experienced declining water quality due to surrounding human activities. The study used macroinvertebrate assemblage composition and diversity indices to characterize ecological status and identify pollution pressure along the river corridor.
Spatiotemporal Assessment of Water Quality in the Yamuna River (Delhi-NCR Stretch) Using Water Quality Index and Multivariate Statistical Analysis: A Seasonal Perspective
Researchers conducted a seasonal water quality assessment of the Yamuna River's most polluted stretch in Delhi, finding critically degraded conditions at all eight monitoring stations year-round, with peak pollution during pre-monsoon season marked by very high BOD, COD, and near-zero dissolved oxygen levels.
Temporal and spatial variations of zooplankton community and biochemical response due to water quality in a Deep Dam Lake (Turkey)
Researchers investigated seasonal and spatial variations in zooplankton community composition and its relationship to water quality parameters in Karakaya Dam Lake, Turkey, identifying 22 taxa across Rotifera, Cladocera, and Copepoda and using canonical correspondence analysis to link abundance patterns to organic matter and nutrient variables.
Multivariate Analysis of Water Quality Measurements on the Danube River
This study applied multivariate statistical analysis to evaluate water quality data collected across multiple depths and cross-sections of the Danube River, identifying patterns in physical, chemical, and biological parameters. Better tools for interpreting complex environmental monitoring data support early detection of pollution including chemical contaminants that interact with microplastics.
Diversity of phytoplankton in the whiteleg (Litopenaeus vannamei) shrimp ponds in the south coastal area of Pangandaran, Indonesia
This Indonesian study assessed phytoplankton diversity and water quality in shrimp ponds using different farming intensities, finding that phytoplankton community composition serves as a useful bioindicator of pond health and productivity. Healthy aquaculture ecosystems are relevant to food safety given that farmed seafood is increasingly being found to contain microplastics from contaminated water.
Identification of Macrozoobentos in the Upstream of the Brantas River, Blitar
Researchers identified 24 families of macrozoobenthos, aquatic bottom-dwelling invertebrates, in the upper reaches of the Brantas River in Indonesia. These organisms are used as bioindicators of water quality, and their presence provides information about pollution levels in this freshwater ecosystem.
Assessment of Water Quality Status, Nutrients, and Phytoplankton Communities in the Coastal Zone of East Aceh Regency, Indonesia
This study assessed seasonal water quality and phytoplankton communities along the East Aceh coast of Indonesia, examining nutrients and physical parameters. It is not about microplastics and is not relevant to microplastic research.
First evidence of microplastics in a freshwater river and their relationship to water quality
Researchers measured microplastic concentrations in a freshwater river used for recreational purposes and found a significant relationship between microplastic abundance and water physicochemical quality parameters, along with the presence of three organic compounds, providing evidence that microplastic pollution and water quality are closely linked.