Aquatic Ecosystems - Science topic

Brackish water ecosystems often have high primary production, intermediate salinities and fluctuating physical conditions and therefore provide challenging environments for many of their inhabitants. This is especially true of the Baltic Sea, which is a large body of brackish water under strong anthropogenic influence. One freshwater species that i...

A enseada de São Lourenço, localizada na Baía de Guanabara, em Niterói, Rio de Janeiro, abriga o Complexo Portuário de Niterói (CPN), com dezenas de terminais portuários (públicos e privados) e atividades industriais navais que possuem grande potencial de impacto negativo no sistema hídrico local. Neste contexto, ecossistemas aquáticos contaminados...

The problem of environmental water pollution is becoming increasingly important. Inland rivers and lakes form interconnected water networks with fragile water ecosystems, and urban water pollution problems occur frequently. Chemical oxygen demand (COD), dissolved oxygen (DO), total phosphorus (TP), total nitrogen (TN), and ammonia nitrogen (NH3-N)...

This study focuses on the short-term contamination and associated risks arising from the release of Polycyclic Aromatic Hydrocarbons (PAHs) due to the 2020 Baghjan oil blowout in upper Assam, India. Shortly after the Baghjan oil blowout, samples were collected from water, sediment, and fish species and examined for PAHs contents. The results of the...

Linking the improvement of water ecosystems to the use of economic concepts and instruments is one of the main innovations introduced by the EU Water Framework Directive (WFD). This should be achieved by Member States through an approach clearly linking measures and interventions to improve water ecosystems to the identified pressures on water bodi...

This study utilized the Delft3D and HABITAT models to investigate the impact of environmental changes resulting from various weir operation scenarios on aquatic habitats and ecosystem health. The weirs were configured to operate with their sluice gates either fully or partially open. The Delft3D model effectively predicted the dominance of diatoms...

River systems play an important role in the development of human society. However, they have been significantly affected by human activities, reducing the capacity for water supply, flood regulation, and aquatic ecosystem services. Identifying changes in river systems and hydrological responses to these changes is crucial for regional water managem...

The present review critically examines the advancements in the past 5 years regarding research on the bioavailability and toxicity of the nanoplastics (NPLs) to freshwater plankton. We discuss the recent progress in the understanding of adsorption, absorption, trophic transfer, and biological effects in phyto- and zooplankton induced by NPLs exposu...

Measuring and classifying the water quality is necessary to manage the appropriate water quality for various farms near the coast or affected by seawater. This research aimed to improve the water quality classification model for various farms using Multi-Layer Perceptron Neural Network-based multi-class Support Vector Machine. It also implements th...

Microplastic (MP) contamination is an acknowledged global problem that poses a severe risk to aquatic ecosystem biota. Nevertheless, little is known about their prevalence in animal construction. The main objective of our study was to reduce the gap information of seasonal abundance, distribution, composition, and risk assessment of MP contaminatio...

La obra “Causalidad y Lógica de los Bioecotoximonitores: perspectivas en ecotoxicología acuática” muestra dos contenidos que orientan el desafío de reconocer con la mayor probabilidad las condiciones ambientales de los ecosistemas acuáticos.

Microplastics (MPs) and surfactants (STs) are emerging pollutants in the environment. While many studies have focused on the interactions of STs with MPs, there has not been a comprehensive review focusing on the effect of STs on MPs in aquatic ecosystems. This review summarizes methods for removal of MPs from wastewater (e.g., filtration, flotatio...

Urban river restoration has been paraded in the last few years as a strategy through which cities may gain green credentials alongside benefits like climate change mitigation and public health enhancement, as well as the promotion of tourism and commerce. As cities continue to grow in size and significance-especially in the Global South-green and b...

The improper disposal of dyes without any prior treatment is one of the main causes of water pollution around the globe. Since dye-contaminated water contains a variety of hazardous elements, which may harm the aquatic ecosystem, impact the aquatic organisms and ultimately enter the food web chain. The most effective ways to recycle dye-contaminate...

Aquatic ecosystems are often subject to degradation due to various environmental stressors. The accumulation of an organic sediment layer causes shallowing, algal blooms, and hypertrophy in water reservoirs. The processes of overgrowth and shallowing lead to a reduction in the ecosystem services provided by the reservoir as well as may potentially...

It is well known that the biodiversity of freshwater ecosystems has suffered heavily decline in recent decades. Although, we are aware of these processes, further decreases in valuable ecosystems and the biodiversity therein are occurring in our neighbourhoods. Aquatic ecosystems are some of the fastest disappearing habitats on Earth. Various human...

A vegetação aquática e seus atributos, como a capacidade de reter poluentes, são importantes indicadores da qualidade dos ecossistemas aquáticos. Entretanto, a flora destes ecossistemas em fundo de vales nos tabuleiros costeiros do Espírito Santo nunca foi avaliada, mesmo com as profundas alterações no uso do solo advindos de grandes empreendimento...

O crescente consumo de produtos protegidos por plásticos têm aumentado ainda mais a geração de resíduos sólidos nos ecossistemas, cada vez mais fragmentados. Os microplásticos, desconhecidos pela maior parte da sociedade, têm causado impactos em ecossistemas e na biota. O estudo objetivou apresentar produtos didáticos para a popularização científic...

The global area and distribution of shallow water ecosystems (SWEs), and their projected responses to climate change, are fundamental for evaluating future changes in their ecosystem functions, including biodiversity and climate change mitigation and adaptation. Although previous studies have focused on a few SWEs, we modelled the global distributi...

Introduction Eukaryotic plankton plays crucial roles in ecosystem processes, impacting aquatic ecosystem stability. This study focuses on Danjiangkou Reservoir, a canyon lake in central China, that acts as the water source of the Mid-route of the South-to-North Water Diversion Project. Methods In this study, high-throughput 18S rDNA gene sequencin...

Human activities threaten the integrity of watersheds. We aimed to investigate the impact of land use on water quality, adopting a multiscale approach. We collected water samples from twelve streams in Southern Brazil and conducted limnological analyses (physical, chemical, and biological) during the dry season. We used the water quality index base...

O livro Hidrologia da Amazônia vista do espaço: avanços científicos e desafios futuroso é uma tradução do artigo de revisão não sistemática publicado em 2021 na Review of Geophysics (https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020RG000728). O livro apresenta uma extensa revisão das conquistas de mais de três décadas de avanços científicos...

Poor and unreliable knowledge of the status of freshwater fisheries limits their inclusion in governance processes, thereby impeding effective management measures. This threatens the livelihoods of people, particularly in developing countries. Improved knowledge is required to draw the attention of policymakers and stimulate effective management me...

Aquatic animals are prone to extinction due to metal pollution and global climate change. Even though the fish and their products are also unsafe for human consumption, their exports have been rejected due to inorganic and organic contaminants. Nickel (Ni) is a metal that induces toxicity and accumulates in the aquatic ecosystem, posing health thre...

Anthropogenic disturbances, including non-indigenous species (NIS) and climate change, have considerably affected ecosystems and socio-economies globally. Despite the widely acknowledged individual roles of NIS and global warming in biodiversity change, predicting the connection between the two still remains a fundamental challenge and requires urg...

The maximum level of Ediacaran-type biota diversity in the Volyn- Podilskyi sedimentation basin existed in the time interval that corresponds to the Lomoziv and Yampil Members of the Mohyliv Formation. Studies of the isotopic age showed that this period ended 557 million years ago. Environmental conditions that prevented the existence of classical...

Plain Language Summary In rivers and streams, mixed‐up dirt called “suspended sediments” is known to influence water quality and its concomitant effects on many physical, chemical, and biological processes. Suspended sediments can be harmful to aquatic ecosystem productivity because they reduce light penetration. They can clog gills of fish and oth...

Pesticides are the chemical compounds, used to kill pests, including insects, rodents, fungi, unwanted plants and possess unique physical and chemical properties. These are classified into various classes on the basis of different characteristics like chemical composition, function and target animals, they kill. These are widely used to control dis...

Lutan Lake in Palangkaraya is one of the most important oxbow lakes for the people of Palangka Raya. The many water resources with high economic value in Lutan Lake require sustainable management to maintain their quality. One of the indicators for determining lake water quality is the analysis of bio-indicators and water’s physical and chemical qu...

Present study focuses on the cell volume and diversity of phytoplankton, which are unique indicators of aquatic salinity. We compared the cell volume and Shannon Weiner Species Diversity Index values of the documented phytoplankton in two significantly different salinity sectors in the Indian Sundarbans: Western and Central. Western sector exhibite...

In recent years, intensive water use combined with global climate change has increased fluctuations in freshwater lake levels, hydrological characteristics, water quality, and water ecosystem balance. To provide a sustainable management plan in the long term, deep learning models (DL) can provide fast and reliable predictions of lake water levels (...

Kuwaiti territorial waters of the northwest Arabian Gulf represent a unique aquatic ecosystem prone to various environmental and anthropogenic stressors that pose significant constraints on the resident biota which must withstand extreme temperatures, salinity levels, and reducing conditions, among other factors to survive. Such conditions create t...

Heavy metal and pesticide pollution of freshwater ecosystems, i.e., rivers, raises significant concerns worldwide, where practical solutions to reduce the threats become urgent need. Heavy metals and pesticides are top of the list of environmental toxicants endangering nature; therefore, pesticides and heavy metals were measured at 10 stations alon...

The military conflict, which began at the end of February 2022 in the territory of the Kherson region, and continues to this day, made it virtually impossible to carry out field studies of water ecosystems and natural landscapes in the region. The front line and territories under the control of the enemy army cut off the opportunity to study a larg...

Trace elements such as titanium, zirconium, thorium, and uranium, are found in black sand (BS) after weathering and corrosion. Precious metals are not the only valuable elements in black sand, rare earth elements are also found. The aquatic life in lakes and reservoirs is negatively affected by lithophilic elements such as lithium, uranium, and tin...

Environmental degradation and anthropogenic climate change severely affect natural resources, thus fostering the need for effective tools to cope with multiple concerns. Within this scenario, the article aims to address public law policies and legislation in reference to water management, with a focus on three specific issues: 1) environmental cost...

Industrial effluents reaching to the aquatic ecosystem is one of the major causes of environmental pollution and exposure to industrial effluents containing harmful substances may be a serious threat to human health. Therefore, the present study aimed to determine the sub-lethal (1/5th of predetermined LC50) impact of industrial effluents from Sund...

Fish is an important and cheap protein source for human consumption in developing countries. It is the second most popular source of protein diet in both rural and urban communities in Nigeria. Fisheries resources contribute about 5.40% to the nation's gross domestic product (GDP) through income generation, employment, food security, and foreign ex...

Oil pollution has become one of the most serious threats to the water ecosystem over the past 30 years due to the widespread development of the offshore petroleum industry, increased oil runoff, increased accidental spills, and fuel discharges from the ground - oil drilling accidents and the increase in offshore oil transportation. Despite the pres...

The aim of this study is to investigate the impact of natural river floods on biotic communities. To this purpose, we used freshwater mussels (FMs), recognized as one of the most reliable bioindicators in aquatic environments. A well-established valvometry technique was applied to measure the FMs valve gaping behaviour, considering both gaping ampl...

Phytoremediation is a sustainable technology that uses vegetation to remediate contaminants from water, soil and sediments. In this paper, two plants, Juncus effusus L. and Iris pseudacorus L. were used in an experimental study of phytoremediation of water contaminated with zinc (Zn) within bioretention systems (BRs). Plants were grown hydroponical...

Os rios são sistemas aquáticos integrados que estão sujeitos a ações abióticas e bióticas. Quando um rio sofre alterações, isso acarreta mudança no fluxo natural de nutrientes e sedimentos. Somado a isso, a utilização de organofosforados em monocultivos próximos a córregos e rios, pode culminar na sua contaminação. Alterações físicas no leito do ri...

Macroinvertebrate Index of Biotic Integrity (M-IBI) is one of the most widely used to assess the health of the aquatic ecosystem. However, few studies of M-IBI on the lake ecosystem. Lake Gunung Putri, which is one of the small lakes in Bogor Regency, West Java affected anthropogenic activities. We collected macroinvertebrates with an Ekman Grab sa...

Ionic liquids (ILs) are generally considered eco-friendly alternatives to conventional industrial solvents, but they are hard to degrade and easily accumulate in the environment. Therefore, their long-term toxicities are especially vital to estimate their potential risk. However, the chronic toxicities of ILs over generations lacked intensive inves...

Conference sesssion: Biodiversity Monitoring in Aquatic Ecosystems to Support a Whole Society Approach to Transformative Change 150004 - Integrating ephemeral wetlands in the sustainable management of boreal forests: an innovative biodiversity assessment of unknown vulnerable ecosystems from space to field supported by art for public involvement...

The environmental impacts caused by fish farming can lead to changes in aquatic ecosystems, especially in fish communities. In this study, we investigated possible changes in water quality, in the number of species and individuals of the same species caused by the construction of fish nurseries in dammed Amazonian streams. For this purpose, four st...

Protecting aquatic ecosystems requires comprehensive understanding and quantification of threats posed by invasive species to inform effective management strategy. In particular, aquatic invasive plants cause profound alterations to aquatic ecosystem composition, structure and productivity, however, monetary cost assessments have lacked at large sc...

The production and disposal of plastic material has increased exponentially in recent decades. As a result, microplastics resulting from plastic degradation processes are now present in all environmental compartments, in particular, aquatic ecosystems. These microparticles can interact with different chemical pollutants, representing a significant...

Population growth, urbanization, and modernization are all contributing to sewage disposal issues and lake poisoning. The physical, chemical, and biological properties of water are typically used to describe its quality. Numerous factors, including BOD, temperature, electrical conductivity, nitrate, phosphorus, potassium, dissolved oxygen, etc., ca...

Fish diversity plays a critical role in maintaining the balance of water ecosystems, especially in the Chongqing section of the National Nature Reserve for Rare and Endemic Fishes in the upper Yangtze River, which serves as an important habitat for rare and endemic fish, as well as an important channel for the replenishment of fishery resources in...

The nitrate ion (NO3−) is a typical pollutant in environmental samples, posing a threat to the aquatic ecosystem and human health. Therefore, rapid and accurate detection of NO3− is crucial for both the aquatic sciences and government regulations. Here we report the fabrication of an amino-functionalized, vertically ordered mesoporous silica film (...

Para empezar, es importante destacar que la gestión sostenible de los recursos hídricos es esencial para mitigar los impactos negativos de la agricultura y la industria en América Latina. Esto incluye prácticas de agricultura más eficientes en el uso del agua, regulaciones ambientales para las industrias y la conservación de ecosistemas acuáticos y...

The monitoring of the organic pollution level and the ecological and health risks of the waters from the Déganobo lake system were the subject of this study. In its implementation, the water samples were collected monthly in this aquatic ecosystem over a year (from August 2021 to July 2022). The organic pollution level of these waters was assessed...

Quagga mussels have expanded their range across the northern hemisphere in recent decades owing to their dispersal abilities, prolific reproduction rates, and broad ecological tolerances. Their remarkable capacity to filter particulates from the water column has had profound effects on inland aquatic ecosystems. In the North American Great Lakes, q...

River systems have been stressed by the construction of dams and regulation structures which influence aquatic ecosystem integrity. Previous studies considered the general significance of regional streamflow regimes for aquatic communities, but they did not investigate the influence of specific components of flow regimes on aquatic ecosystems under...

In many large shallow lakes across the globe, the surface wind field drives the hydrodynamic process directly through the momentum and energy exchange at the air–water interface. Numerous field measurements, experiments and modeling show that wind-driven hydrodynamic disturbances have profound impacts on the structure and function of lake ecosystem...

Las concentraciones de residuos de antibióticos en los ecosistemas acuáticos están experimentando un incremento progresivo, lo que está ejerciendo impactos significativos en las especies residentes. Las especies Lemna gibba y Azolla fifliculoides son ampliamente conocidas en estudios de toxicidad, y fitorremediación. Además, se ha observado que est...

Indigenous fish (IF) are a great source of nutrition due to the presence of protein, calcium, phosphorous, iron, vitamins, low fat, omega-3 fatty acids, and other micronutrients along with helpful to maintain the aquatic ecosystem of a landscape. The population of IF species are declining due to many factors including anthropogenic and climatic cha...

The continuous increase in human activities worldwide has caused a loss of aquatic biodiversity and a dramatic change in the aquatic community structure. Therefore, accurate and reliable biodiversity monitoring is essential for ecological conservation and sustainable resource use to determine species abundance and community structure in target area...

Background Aquatic ecosystems in the tropics are typically environments with a high species richness of fishes. These systems are also among the most vulnerable in the world, threatening the overall biodiversity of tropical regions. As a first step, it is important to enumerate the species in any ecosystem to promote its conservation. This study ai...

The river Ganga has several floodplain wetlands that support its ecology and ecosystem. Phytoplankton is an important component of the aquatic ecosystem, which plays an important role as a bioindicator for the assessment of aquatic health. The present study was conducted between 2018 and 2019 to understand the seasonal variation in the phytoplankto...

The present review critically examines the advancements in the past 5 years concerning the re-search on the bioavailability of the nanoplastics (NPLs) to freshwater plankton. With a specific emphasis on two bioavailability components: uptake availability and toxico-availability, we dis-cuss the recent progress in the understanding of the adsorption...

Aquatic environments are one of the final destinations for microplastics. In this review, a combination of systematic and narrative literature review was conducted to identify and summarise advances, gaps, and future directions in microplastic monitoring studies in the Turkish aquatic environment and in inhabiting aquatic organisms. A total of 62 p...

Aquatic ecosystems belong to the most sensitive group of living environments, which are under the great influence of the anthropogenic factor, and precisely for this reason, research and determination of the diversity of animal species are quite important in these lentic ecosystems (lakes).In addition to abiotic indicators (physicochemical conditio...

Nitrophenols, which are defined as an important toxic and carcinogenic pollutant in agricultural and industrial wastewater due to their solubility in water, form of resistance against all organisms in water resources. It is vital that these compounds, which are highly toxic as well as highly explosive, are removed from the aquatic ecosystem. In thi...

Waterway Ganga is thought-out protected for providing life nutrition to people as political whole of India. Anthropogenic ventures, still, have generated monstrous conversions in penal institution environment during ancient times few decades. Progress of science in the form of a rise in the number of businesses and the subsequent discharge of prepa...

The increasing concentration of heavy metals in the water ecosystems has become a noteworthy concern. This has accounted for various diseases due to the bioaccumulation in the human body. We propose a biocompatible, non-toxic technique for the identification of heavy metal ions from the contaminated aquatic samples. A urease biosensor, having inter...

Sahel's largest wetland, the Inner Niger Delta (IND) is highly productive with a biologically diverse ecosystem and fed by seasonal floods. It plays a crucial role in shaping culture and driving local and national economies. Over one million people composed mainly of fishermen, farmers, and breeders that depend on the vitality of these wetlands. De...

The development of environmentally friendly technology for water ecosystem rehabilitation has become a challenge in solving pollution control problems in water bodies. Ecotechnology is a technology to improve water quality using an ecosystem approach, including the technology of constructed treatment wetlands and natural adsorbents. This study aims...

Amphibians are vital components of global biodiversity and fulfil diverse ecological roles, including insect population control and serving as environmental health indicators. However, there is a concerning decline in amphibian populations globally due to factors such as habitat loss, climate change, and emerging diseases. Concurrently, the issue o...