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rivers, etc ; chlorophyll; coastal water; fluoroquinolones; mariculture; pollution; risk assessment; salinity; selection pressure; total nitrogen; China; Yellow Sea; Show all 12 Subjects
Abstract:
... The pollution of antibiotics commonly existed throughout the entire aquaculture process, but the residues of antibiotics at different aquaculture stages have rarely been studied. This study investigated the occurrence, distribution and risk assessment of antibiotics at different aquaculture stages (the non-aquaculture stage, the early aquaculture stage, the middle aquaculture stage, and the late a ...
rivers, etc ; agricultural pollution; bioavailability; biogeochemical cycles; esters; lakes; nuclear magnetic resonance spectroscopy; organic matter; orthophosphates; pH; principal component analysis; risk; sediments; China; Show all 14 Subjects
Abstract:
... Phosphorus (P) in sediments plays an important role in shallow lake ecosystems and has a major effect on the lake environment. The mobility and bioavailability of P primarily depend on the contents of different P forms, which in turn depend on the sedimentary environment. Here, sediment samples from Baiyangdian (BYD) lake were collected and measured by the Standards, Measurements, and Testing proc ...
... North-eastern Tasmania, Australia. Two quantitative methods for determining the bankfull stage of alluvial rivers from plotted channel cross-sections were assessed. Bankfull stage estimates determined using the minimum width-to-depth ratio and the first maximum of the bench-index were compared, and then evaluated against qualitative estimates of bankfull stage, using data from 89 cross-sectional s ...
... While many studies have explored the value of water, little is known concerning the meaning of water for Australian river communities. This rapid literature review provides an overview of the recreational, cultural, and environmental meaning of water for Indigenous and non-Indigenous Australian river communities and notes important connections between these relationships. Consequently, this review ...
... Study Region Poland (representative sample of 146 flow gauges free of major human modifications, located in 12 major river basins) Study Focus The objective was to present trends in selected river flood indicators (magnitude, frequency and timing) in Poland, using the annual maximum daily flow and peak-overthreshold approaches. Two periods (1956–2019 and 1981–2019) were analyzed. The first period ...
... Sustaining environmental flows (e‐flows) is a basic requirement for river, lake and marsh management. Rivers, lakes and marshes have close hydrological and ecological connections in a river basin, and form river–lake‐marsh systems. Any measure that is designed to address problems related to only one of these water bodies in isolation of the others may lead to unexpected, undesired and sub‐optimal ...
... Non-staggered triangular grids have many advantages in performing river or ocean modeling with the finite-volume method. However, horizontal divergence errors may occur, especially in large-scale hydrostatic calculations with centrifugal acceleration. This paper proposes an unstructured finite-volume method with a filtered scheme to mitigate the divergence noise and avoid further influencing the v ...
... In this paper we present a new frontal migration system for fish which could be used for overflow weirs and river sills. Since movement of fish is the most crucial thing in the healthy river environment fish passes are necessary to predict in any place where hydraulic structures are designed or any river engineering works are applied in the river channel. Thus in our paper we are giving a proposal ...
... The current state of zoobenthos communities has been studied in a large Siberian river, namely, the Chulym River. Bioindication indices have been calculated to determine the water quality. The use of the integral indicator has made it possible to assess the water quality in a single system in compliance with the Russian standards. The high water quality (“conventionally clean”) has been recorded i ...
... A debris flow flowing into a river may cause river blockage and form a dam. When the dam breaks, large floods can occur in the areas downstream, which can lead to fatalities and property damage. In this study, the parameters of river blockage were classified as three types of factors: morphological factors, dynamic factors, and characteristics factors of debris flows. The confluent angle, the dime ...
... Eight rivers regulated by large dams located in three hydro-climatic zones along the Chilean latitudinal gradient. We performed a multi-temporal scale analysis of flow records and we used data from official gauging stations to characterise the non-altered and the altered river regimes to determine the magnitude and persistence of the hydrological alteration downstream from large dams in Chile. The ...
rivers, etc ; catenas; colluvium; hydrometeorology; landslides; Show all 5 Subjects
Abstract:
... The paper deals with the problem of the impact of river erosion on the activity level and type of colluvial movement within landslides in two study regions (Foothills and Beskidy Mts.) in the Polish Outer Carpathians. The principal goal of the study was to investigate how landslides that remain in contact with river channels function and to identify primary colluvial movement types depending on hy ...
... This article analyses the implications of the knowledge of the Ogan community in South Sumatra (Indonesia) about the types of land on the banks of the river on the layout of their settlements. Living on the river bank is an important identity for the Ogan Ulu community, but the condition of their rivers which tend to run watery and the inappropriate land use, of course, will have an impact on the ...
... Economic development projects in river basins, involving mining, forestry, agriculture and urban developments, invariably impact the aquatic ecosystems of the basin [...] ...
... River floods are already the most damaging disaster type globally, with risk projected to rise in much of the world due to climate change, development in flood-prone areas, and/or deteriorating infrastructure. Nature-based solutions, such as using floodplains to manage floodwaters, can contribute to a diversified portfolio for managing flood risks. ...
... This article sets out the authors' attachments to, and memories of, two tidal river/channel landscapes and how these are being folded into collaborative work, which brings these places to attention through art practice and shared reflection. The rivers/channels in question are given voice in the introduction and ideas of the ecologies of mouths and river mouths, particularly those tidal, are explo ...
rivers, etc ; coal; metalloids; research; sediments; wastewater; Show all 6 Subjects
Abstract:
... A study on the advantages of liming combined to sedimentation-dredging to reduce heavy metals and metalloid in coal mining water was performed in tailing wastewater sedimentation ponds, mixed water sedimentation ponds, and Sangatta River where water from the coal mining area flows in. The concentrations of heavy metals and metalloid showed that the results were not significantly different (P > 0.0 ...
... The baseflow separation method based on a digital filter is a simple method for separating the baseflow from streamflow. Appropriate estimation of filter parameters is required to use the digital filter method for analysis. We carried out sensitivity analysis on four digital filter methods: Lyne–Hollick (LH), Chapman, Chapman and Maxwell (CM), and exponentially weighted moving average (EWMA). Furt ...
rivers, etc ; Bacillariophyceae; basins; biotopes; watersheds; Mongolia; Show all 6 Subjects
Abstract:
... This investigation aimed to assess the diatom diversity, richness, and occurrence for each biotope temporal and spatial variability along the Khara River basin, Mongolia. We collected diatom samples in 19 sites across the Khara River basin every three years for the May and August months. Three hundred thirty-six species of diatoms were recorded in this basin, and 24.4 percent or common species of ...
rivers, etc ; Cretaceous period; Miozoa; palynology; Poland; Show all 5 Subjects
Abstract:
... In this article, the most representative dinoflagellate cyst genera and species recognised in the rich palynomorph assemblages of the upper Campanian–lowermost Maastrichtian succession of the Middle Vistula River section (central Poland) are treated taxonomically: in particular, six genera and 16 species are considered. Oligosphaeridium araneum sp. nov., which possesses processes with relatively l ...