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Aquatic Ecosystems - Science topic

marine and freshwater aquatic ecology and hydrobiology
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Publications related to Aquatic Ecosystems (10,000)
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Article
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Benthic aquatic insects receive the most direct impact when surface waters are perturbed. However, scarce data and understanding about activities’ effects on surface water ecosystems remain a critical challenge for water resource managers and policymakers in tropical regions. In this study, we surveyed the implications of deteriorating physical and...
Article
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Background The restoration of lake ecosystems requires a good knowledge of the lake’s history and the driving mechanism of environmental changes. In this study, we used Lake Datong, the largest inland lake in Hunan Province China, as an example to study the effects of aquaculture, based on historical data of aquatic creature, diatom inferred-total...
Article
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Background In Germany and the EU, most headwaters are still far from reaching a good chemical and ecological status as it is required by the European Water Framework Directive (WFD), until 2027 the latest. Particularly, in densely populated areas, impacts from municipal and industrial wastewater discharges or diffuse agricultural emissions are stil...
Article
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The hydrodynamics in the diverging area become complicated because of the basin hydrological conditions, making the distribution of antibiotics largely uncertain and thus bringing uncertain ecological risks of antibiotics. Through field sampling, experiments and numerical simulations, the distribution of antibiotics, its responses to hydrological c...
Article
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Iron (Fe) treatment is one of the most commonly used methods to restore eutrophic lakes and reservoirs. The Fe-based coagulants dosage results in an almost immediate improvement in water quality at a relatively low cost. However, the effects of the application of coagulants are not always predictable, and the scale of the risks is not fully underst...
Article
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Plant extract and essential oils are gaining application in aquaculture, but data about their environmental impact are limited and their potential effects on aquatic organisms are largely unknown. For this study, ecotoxicity tests were performed under standardized conditions on fish feed supplemented with 3 % w/w of a basil supercritical extract (F...
Article
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Microplastics (MPs) are ubiquitous pollutants that have also been detected in the aquatic ecosystems at high concentrations. The use of shellfish as bioindicators is widespread for assessing and monitoring the environmental quality in both freshwater and marine environments. On this path, biomarkers represent an effective tool in monitoring program...
Article
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the reduction of habitat integrity and canopy cover will lead to a lower richness of the Zygoptera sub-order, due to the restrictions of its thermoregulation and oviposition behavior in relation to Anisoptera, since the higher light input would favor heliother-mic and exophytic species; (3) alterations in habitat integrity create ecological thresho...
Research Proposal
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Dear Colleagues, Regional/local (e.g., land cover transformation, pollution, hydromorphological alterations and invasive species) and global (e.g., climate change) environmental changes are responsible for the loss of many aquatic biota and ecosystem functions. In addition, freshwater resources, especially rivers and lakes, are under severe pressu...
Article
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Coastal water bodies and estuaries of the study area receive and operate the mixing process of land discharges and longshore current discharges loaded with nutrients and pollutants. The shallow water ecosystems of the region are damaged due to the concentration of oil spills and dissolved organic matter. The present study describes the seasonal var...
Article
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Aquatic ecosystems are exceedingly contrived due to industrial dispenses, as a huge amount of toxicants especially heavy metals are released, causing drastic effects on aquatic lives and the human body. This study was performed to assess the quality of point-source industrial wastewater at varying percentage levels and their subsequent hazardous ef...
Poster
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La pollution de l'eau est un terme général qui désigne plusieurs formes d'agression contre l'intégrité de l'écosystème aquatique, principalement causées par l'utilisation abusive des produits phytosanitaires qu'on appelle les pesticides en agriculture. La pollution peut constituer, à court terme un risque de pénurie accentué imposant ainsi la néces...
Article
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The aquatic macrophyte species has a great significant impact to the aquatic ecosystem as they plainly provide shelter for young fishes and other aquatic organisms. This study aimed to assess and evaluate the composition and diversity of macrophyte species in selected sites of Lumbocan River, Butuan City, Agusan del Norte, Philippines. The sampling...
Article
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Anthropogenic activities are affecting marine ecosystems, notably coastal ones, in multiple ways and at increasing rates, leading to habitat degradation, loss of biodiversity, and greater exposure of flora and fauna to chemical contaminants, with serious effects on ocean health. Chemical pollution, in particular, is a significant negative stressor...
Chapter
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Algal bloom refers to the abrupt increase of fresh or marine water algal species in the water resulting in the discoloration of water due to their pigments (Foster, 2013). The microscopic planktonic algae of the world's freshwaters and oceans are an important component of aquatic ecosystem by virtue of their photosynthetic activities and criticalit...
Article
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The Eurasian otter (Lutra lutra) is a rare and lesser-known top predator of the aquatic ecosystem in India. A Eurasian otter was photographed on 9 July 2021 in a village in the Sundargarh forest division in the state of Odisha during a biodiversity survey. This record is an important addition to the currently limited information available for speci...
Article
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The composition and abundance of solid waste and the effect of COVID-19 measures were studied in an inland water ecosystem in Turkey. Solid waste items were collected annually for 5 years from 2017 to 2021 from seven stations located in Borçka Dam Lake (B1–B4) and Murgul Stream (M1–M3) in the Artvin Province. The highest densities by number and wei...
Technical Report
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Quando pensamos nos serviços da natureza conservada podemos relacionar um número muito grande de benefícios de grande amplitude. Quando pensamos nos esforços de conservação dessa natureza, devemos pensar nas areas protegidas e conservadas, mas podemos refletir sobre locais de grande importância ecológica, muitas vezes localizados mais afastados da...
Article
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Laponite nanoparticles have been proposed for soil densification to reduce the negative impacts of seismic hazards. However, the effects of laponite on the aquatic ecosystem are lacking. In this study, different concentrations (0.1, 0.2, 0.3, 0.4, and 0.5%) of laponite were used to investigate the growth and total chlorophyll content of microalgae:...
Article
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Nutrients released from lake sediments contribute to the total nutrient load of an aquatic ecosystem. In this study, we used the oxygen-loaded lanthanum modified zeolites (LOZ) for absorbing internal phosphorus (P) and nitrogen (N) meanwhile with potential to trigger biological transformation of the nutrients. The results showed that the lanthanum...
Article
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Aerated flow characterized by complex mass transfer processes with multiple hydraulic properties is a common enviro-hydraulics phenomenon, which have a variety of profound effects on aquatic ecosystems and the environment. Accurate prediction of the mass transfer process between air and water is crucial to manage the water ecosystem. In this resear...
Conference Paper
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We studied the species diversity and distribution o f diatoms in high altitude aquatic ecosystems o f the Indian Trans Himalayan region. We sampled three lakes, namely Tsomoriri (Ramsar site), Pangong Tso and Tsokar Lake, representing lentic ecosystems, and four different second to third order streams and the Indus River, representing lotie ecosyst...
Article
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The stressful environment in Pranburi River estuary of Thailand severely impacts the aquatic ecosystem and may be causing reproductive alteration in the estuarine fishes living in this area, although there is little evidence of such deteriorated reproductive system. Thus, we aim to investigate the reproductive system, in particular the ovarian alte...
Article
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Numerous institutions and governments have opted to increase irrigation efficiency to tackle water problems, especially water scarcity. The purpose of this research is to analyse the effects that the introduction of new irrigation technologies has in closed basins with high water reuse and where most of the water is used for agriculture. We analyse...
Article
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Resumo Estudos recentes demostraram tendências climáticas com anomalias positivas de 2 graus Celsius para tem-peratura e anomalias negativas de-250 mm para precipitação, sugerindo uma mudança abrupta do padrão de chuvas para a região do Parque Estadual do Rio Doce. Este estudo objetivou demonstrar as variações dos níveis de água das lagoas em funçã...
Article
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This paper provides a technical analysis of a river’s current and future resilience in a watershed with intensive agricultural and fishing activities. The study area was the last section of the Culiacan River corresponding to the river mouth over a lagoon system. Dissolved oxygen modeling was performed using the Streeter-Phelps model to evaluate th...
Article
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Rapid economic development, industrialization and urbanization lead to environmental pollution and damage the stability of regional ecosystems. The Yangtze River Delta region is an economically developed region in China, faces the problems of water environment pollution and water ecosystem service degradation. Reasonable assessment of water ecosyst...
Article
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Aquatic ecosystems (both marine and freshwater) have long served as model systems for exploring the role of environmental stressors on organismal performance and survival, the biogeographic distributions of populations and species, and ultimately the diversity, functioning, and stability of ecosystems (Adams, 2002; Forbes, 1887; MacArthur & Wilson,...
Article
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Aquatic ecosystem has vast resources and ecological functions, however the economic worth of its services are often ignored. This study appraised the value of ecological services offered by some aquatic ecosystem (Gbaji, Agboju, Topo and Ajegunle) in Badagry Division, Lagos, Nigeria in relation to the current physical and chemical status of these h...
Article
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Acrylamide, a synthetic compound, has a wide range of industrial applications that find multiple ways to reach aquatic ecosystem. The median lethal concentration of acrylamide determined using probit analysis in the fish Anabas testudineus was 132 µg L⁻¹ concentration together with altered behavioral patterns. Hematological and antioxidant status w...
Article
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Wildfires are a recurring hazard in forested catchments representing a major threat to water security worldwide. Wildfires impacts on water quality have been thoroughly addressed by the scientific community through field studies, laboratory experiments, and, to a lesser extent, the use of hydrological models. Nonetheless, models are important tools...
Article
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Microalgae are photosynthetic unicellular microorganisms that represent an extremely important component of the aquatic ecosystem productivity, diversity, and functioning [...]
Article
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The intensification of agricultural systems has increased the food production efficiency, increasing the productivity while the production costs are reduced. Although these factors are key to global food security in a context of continued human population growth, the use of intensive agricultural techniques results in different environmental issues...
Article
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Anaerobic ammonia oxidizing (anammox) has already been recognized as an innovative and economical nitrogen removal technology. However, the effect of heavy metals on anammox bacteria in aquatic ecosystem remains largely unknown. Ni(II) is a common kind of heavy metals detected in industrial wastewater and municipal sewage treatment plants. Hence, t...
Article
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Polluted drains are considered one of the most important dangerous elements for the surrounded aquatic environment. The use of polluted water from drains outfalls in fish farms and agricultural lands has a very dangerous environmental effect on plants, soil, and groundwater. Over a year period starting May 2018, 75 water samples were collected from...
Article
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ARTICLE INFO ABSTRACT Fish which is a very rich source of high quality animal protein, vitamins, essential fatty acids and other nutrients is an important part of the human diet worldwide, particularly in developing countries. Without water existence of human and animal is not possible, because of industrialization, agricultural runoff, industrial...
Article
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Aim: The study was aimed to determine the toxicity of paraquat dichloride and lambda-cyhalothrin on phosphate solubilizing bacteria, Pantoa dispersa in aquatic ecosystems. Study Design: This study employs randomized block design, statistical analysis of the data and interpretation. Place and Duration of the Study: Soil sample was collected from the...
Article
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Phytoplanktons are one of the most ecologically important species for aquatic ecosystem. They are also useful for the survival of living organism of earth as they are the major contributor of oxygen in air. The variability of species i.e. biodiversity of phytoplankton is one of the most important branch of study in the field of environment due to i...
Article
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Recent advances in molecular biomonitoring open new horizons for aquatic ecosystem assessment. Rapid and cost-effective methods based on organismal DNA or environmental DNA (eDNA) now offer the opportunity to produce inventories of indicator taxa that can subsequently be used to assess biodiversity and ecological quality. However, the integration o...
Article
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The International Panel on Climate Change (IPCC) projects a global temperature rise of 4.3 ± 0.7 °C by 2100 and an extinction of 8.5% in one out of every six species. Australia’s aquatic ecosystem is no exception; habitat loss, fragmentation, and loss of biodiversity are being experienced. As the center for Nymphaea species distribution, it present...
Article
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Brackish water fishery is one of the prime economic activities in tidally active parts of Bengal delta region of India. The presence of tidal creeks, rivers and streamlets made this landscape ideal for fishing. Natural disasters like cyclone and flood have severe effects on natural brackish water ecosystem of this region which leads to ecologica...
Chapter
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No clean water means that no life can be exist. Clean water supplies a healthy environment. Toxic pollutants are released to the water system through industrial wastes, agricultural overflow and chemical discharges. The generated wastewater are generally containing hazardous and cancer-causing pollutants which make them highly toxic to aquatic micr...
Conference Paper
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Aquatic ecosystems throughout the world are threatened by the presence of invasive aquatic plants, both floating and submerged. Some of the aquatic species , such as water hyacinth EichhorniacrassipesSolms,Hydrillaverticillat, Nymphoidescristata, salviniamolesta. alligator weed. Despite being relatively minor problems in their native range, have be...
Article
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Rara Lake is situated in mountain ecoregion serves as staging post for the long range migratory wetland birds. The lake ambient forest bears the restricted range and globally threatened species.Bird species in the park is reported as unrecorded while habitat quality of the Rara lake providing the refuge to migratory and native bird species is degra...
Article
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Ionic liquids (ILs) are known as “green solvents” and widely used in industrial applications. However, little research has been conducted on cyanobacteria This study was conducted to investigate the toxicity of ionic liquids ([Hmim]Cl) on Microcystis aeruginosa PCC7806. The EC50 (72 h) of [Hmim]Cl on the growth of Microcystis aeruginosa PCC 7806 wa...
Article
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Our planet is being subjected to unprecedented climate change, with far-reaching social and ecological repercussions. Below the waterline, aquatic ecosystems are being affected by multiple climate-related and anthropogenic stressors, the combined effects of which are poorly understood and rarely appreciated at the global stage. A striking consequen...
Article
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The natural phenomenon of harmful algae bloom (HAB) has a bad impact on the quality of pure and freshwater. It increases the risk to human health, water bodies and overall aquatic ecosystem. It is necessary to continuously monitor and perform proper action against HAB. The inspection of algae blooms by using conventional methods, like algae detecti...
Article
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Ecosystem services of fish and fisheries: Social, cultural, and economic perspective Part 1 - North and South America. Aquatic Ecosystem Health and Management Society Volume 25, Issue 1 January 1, 2022
Article
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The natural phenomenon of harmful algae bloom (HAB) has a bad impact on the quality of pure and freshwater. It increases the risk to human health, water bodies and overall aquatic ecosystem. It is necessary to continuously monitor and perform proper action against HAB. The inspection of algae blooms by using conventional methods, like algae detecti...
Article
Full-text available
Silver nanoparticles (AgNPs) are commonly used in numerous consumer products, including textiles, cosmetics, and health care items. The widespread usage of AgNPs results in their unavoidable discharge into the ecosystem, which pollutes the aquatic, groundwater, sediments, and marine environments. These nanoparticles (NPs) activate the production of...
Preprint
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A comprehensive approach to protect river water quality is needed within the European Water Framework Directive. Non-target screening of a complete chemical fingerprint of the aquatic ecosystem is essential to identify chemicals of emerging concern, to reveal dynamic patterns of suspect river water pollution. Dedicated data processing of ongoing GC...
Book
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This book highlights marine pollution in the Bizerte Lagoon in Tunisia, offering insights into the distribution and source of contamination the marine environment. It presents, for the first time, the study of the pesticides in the different compartments of the aquatic ecosystem: surface water, sediment, suspended particles and sediment cores. It p...
Article
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Commercial usage of zinc oxide nanoparticles threatens the aquatic ecosystem. The green synthesis of ZnO nanoparticles is an environmentally benign method of nanoparticle manufacture. Aim: In the current study, freshwater bivalves were employed as a crucial indicator for the green synthesis of alginate/ZnO nanocomposite. Transmission electron micro...
Article
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The abuse of artificial food dyes and the evidence that they harm human health recently prompted a significant effort to introduce vegan substitutes prepared from fruits and vegetables. Not much information, however, has been collected on their possible effects on aquatic and terrestrial ecosystems once released as waste in surface waters. For this...
Article
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To comprehensively understand the toxic risks of phthalates to aquatic ecosystems, we examined the acute toxicity of di-(2-ethylhexyl) phthalate (DEHP) and di-butyl phthalate (DBP) on multiple trophic models, including algae (Chlorella vulgaris), Daphnia magna and fish (Danio rerio, Pseudorasbora parva). Thus, a 15-day zebrafish exposure was conduc...
Article
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The pollution of natural water bodies and peri-urban wetlands is frequent in the Middle Paraná River (Argentina). This work evaluates the potential use of different rooted macrophytes for metal phytoremediation in peri-urban wetlands. Macrophytes, water and sediment were collected in the study sites. Cr, Ni, Zn, Pb, total phosphorus (TP) and total...
Article
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Aquatic ecosystems are under different anthropogenic pressures, such as climate change, eutrophication, chemical pollution, overfishing, and introducing exotic species. Human activities have accelerated biogeochemical cycles forcing organisms and ecosystems to adapt. Most ecological stoichiometry studies are focused on carbon, nitrogen, phosphorus,...
Article
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Lactic and formic acid are two commonly found monocarboxylic organic acids. Lactic acid is discharged into the water bodies as acidic industrial effluent from the food, cosmetic, chemical, and pharmaceutical industries, whereas formic acid is discharged from various paper, leather tanning, and textile processing industries. The present study invest...
Article
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Os estudos relacionados à Ecologia de Organismos Bentônicos dedicam-se aos organismos que habitam o sedimento e substratos de fundo, consolidados ou não, de ecossistemas aquáticos continentais, tais como rios, riachos de cabeceira, lagos e reservatórios. Este artigo apresenta uma síntese sobre a importante contribuição do Prof. Francisco de Assis E...
Article
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In aquatic ecosystems, allochthonous inputs of leaf litter are common substrates for the invertebrates communities. The quality and physical structure of these substrates are expected to strongly determine benthic invertebrates structure and functioning. Therefore, we carried out an experiment to evaluate the association between these organisms and...
Article
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2,4-Dichlorophenoxyacetic acid (2,4-D) is commonly used to control invasive aquatic macrophytes, including Eurasian watermilfoil (Myriophyllum spicatum) (EWM). Potential influences of 2,4-D on non-target organisms are poorly understood; however, research has suggested the possibility of lethal effects on certain fish species. Lake Ellwood, Wisconsi...