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1. (Micro) plastic fluxes and stocks in Lake Geneva basin

Author:
Julien Boucher; Florian Faure; Olivier Pompini; Zara Plummer; Olivier Wieser; Luiz Felippe de Alencastro
Source:
Trends in analytical chemistry 2019 v.112 pp. 66-74
ISSN:
0165-9936
Subject:
basins; lakes; microplastics; models; pollution; rivers; sediments; socioeconomics; Lake Geneva
Abstract:
... High amounts of macro and microplastic have been reported in rivers, lakes and seas. However, links between the observed pollution and their sources remain unclear. This study aims to clarify these links in the Lake Geneva basin by analysing each step of the local plastic life cycle.Two distinct approaches have been compared: (i) a top-down approach based on modelling socio-economic activities, pl ...
DOI:
10.1016/j.trac.2018.11.037

2. (Re)Development of fluvial islands along the lower Mississippi River over five decades, 1965–2015

Author:
Paul F. Hudson; Edward van der Hout; Madelief Verdaasdonk
Source:
Geomorphology 2019 v.331 pp. 78-91
ISSN:
0169-555X
Subject:
Internet; aerial photography; computer software; data collection; engineering; geographic information systems; growth and development; habitats; hydrologic data; islands; lidar; pollution load; remote sensing; riparian areas; rivers; sediment yield; sediments; spatial data; t-test; topographic maps; vegetation; Mississippi; Mississippi River
Abstract:
... The development and evolution of islands along the lower Mississippi River were examined over a 50 year period, between 1965 and 2015. Fluvial islands were historically a fundamental component of the riparian corridor, serving as important ecological habitat for aquatic and terrestrial species. Their degradation was associated with channel engineering, leading to a pronounced single thread channel ...
DOI:
10.1016/j.geomorph.2018.11.005

3. 100 kyr sedimentary record of Marginal Gangetic Plain: Implications for forebulge tectonics

Author:
Rupa Ghosh; Pradeep Srivastava; U.K. Shukla; R.K. Sehgal; I.B. Singh
Source:
Palaeogeography, palaeoclimatology, palaeoecology 2019 v.520 pp. 78-95
ISSN:
0031-0182
Subject:
basins; climatic factors; color; floodplains; luminescence; rivers; rocks; sediments; tectonics; Himalayan region
Abstract:
... The Gangetic Foreland is a consequence of continent-continent collision and formation of the Himalayan thrust and fold belt. In the more distal part of the peripheral Gangetic foreland basin, the Late Quaternary sedimentary architecture analysis from 17 stratigraphic successions together with optically stimulated luminescence dating (OSL) divulge interaction of peripheral bulge tectonics and clima ...
DOI:
10.1016/j.palaeo.2019.01.035

4. 137Cs and 239+240Pu in the Bohai Sea of China: Comparison in distribution and source identification between the inner bay and the tidal flat

Author:
Qifan Zhuang; Guosheng Li; Fu Wang; Lizhu Tian; Xingyu Jiang; Kexing Zhang; Geng Liu; Shaoming Pan; Zhiyong Liu
Source:
Marine pollution bulletin 2019 v.138 pp. 604-617
ISSN:
0025-326X
Subject:
cesium; estuaries; mixing; radionuclides; rivers; sediments; soil conservation; water pollution; watersheds; China; Yangtze River; Yellow Sea
Abstract:
... We investigated artificial radionuclides (²³⁹⁺²⁴⁰Pu and ¹³⁷Cs) in surface sediments and sediment cores collected from the Bohai Bay and the tidal flat of the Liaodong Bay, China. Increasing trends for ²³⁹⁺²⁴⁰Pu activities and ²⁴⁰Pu/²³⁹Pu atom ratios (˃0.18) were observed from land to sea and from north to south in the Bohai Bay. This spatial pattern implied that the scavenging process between rive ...
DOI:
10.1016/j.marpolbul.2018.12.005

5. A 2000 year record of palaeofloods in a volcanically-reset catchment: Whanganui River, New Zealand

Author:
Ian C. Fuller; Mark G. Macklin; Willem H.J. Toonen; Jonathan Turner; Kevin Norton
Source:
Global and planetary change 2019 v.181 pp. 102981
ISSN:
0921-8181
Subject:
El Nino; La Nina; X-ray fluorescence spectroscopy; atmospheric circulation; climate; floodplains; floods; geochemistry; hydrologic data; land cover; mass flow; models; radiocarbon dating; regolith; risk assessment; rivers; sediments; volcanic activity; watersheds; wind direction; New Zealand; Pacific Ocean
Abstract:
... Palaeofloods in the Whanganui River, North Island, New Zealand are investigated using floodplain sedimentary archives at two locations in the lower Whanganui catchment. The ca. AD 232 Taupo volcanic eruption transformed the lower valley of the Whanganui River, emplacing a substantial volume of volcanogenic mass flow material and providing a new starting point for subsequent alluvial sedimentation. ...
DOI:
10.1016/j.gloplacha.2019.102981

6. A 2000-year sediment record reveals rapidly changing sedimentation and land use since the 1960s in the Upper Mara-Serengeti Ecosystem

Author:
Christopher L. Dutton; Amanda L. Subalusky; Troy D. Hill; Julie C. Aleman; Emma J. Rosi; Kennedy B. Onyango; Kanuni Kanuni; Jenny A. Cousins; A. Carla Staver; David M. Post
Source:
Science of the total environment 2019 v.664 pp. 148-160
ISSN:
0048-9697
Subject:
basins; carbon; dry season; ecosystems; environmental factors; land use; mercury; nitrogen; paleoecology; people; pollution load; rivers; sediments; watersheds; wetlands; wildebeest; Eastern Africa; Nile River
Abstract:
... The Mara River basin is a trans-boundary basin of international importance. It forms the headwaters of the Nile River and serves as the primary dry season water source for an estimated 1.1 million rural people and the largest remaining overland migration of 1.4 million wildebeest in the Serengeti-Mara Ecosystem. Changes throughout the basin are impacting the quantity and quality of the Mara River, ...
DOI:
10.1016/j.scitotenv.2019.01.421

7. A 200 km-long mercury contamination of the Paglia and Tiber floodplain: Monitoring results and implications for environmental management

Author:
V. Rimondi; P. Costagliola; P. Lattanzi; G. Morelli; G. Cara; C. Cencetti; C. Fagotti; A. Fredduzzi; G. Marchetti; A. Sconocchia; S. Torricelli
Source:
Environmental pollution 2019 pp. -
ISSN:
0269-7491
Subject:
air pollution; alluvial plains; dietary exposure; ecosystems; fish; floodplains; inhalation exposure; mercury; monitoring; precautionary principle; public health; remediation; rivers; runoff; sediments; soil; streams; surface water; surveys; vegetables; water pollution; Italy
Abstract:
... This paper reports the results of a joint project carried out by three regional environmental agencies of Italy to evaluate long-range mercury (Hg) transport from the abandoned Mt. Amiata Hg district in southern Tuscany (the third largest worldwide site for Hg production) to the fluvial ecosystems of the Paglia and Tiber rivers. Most of the work focused on stream sediments, surface waters and soil ...
DOI:
10.1016/j.envpol.2019.113191

8. 236U and radiocesium in river bank soil and river sediment in Fukushima Prefecture, after the Fukushima Daiichi Nuclear Power Plant accident

Author:
Guosheng Yang; M. Safiur Rahman; Hirofumi Tazoe; Jun Hu; Yang Shao; Masatoshi Yamada
Source:
Chemosphere 2019 v.225 pp. 388-394
ISSN:
0045-6535
Subject:
accidents; cesium; databases; monitoring; nuclear power; power plants; radionuclides; riparian soils; rivers; sediments; soil sampling; tandem mass spectrometry; uranium
Abstract:
... Almost 8 years after the Japanese Fukushima Daiichi Nuclear Power Plant (FDNPP) accident, data for 236U and 236U/238U have mainly remained limited to only a few heavily contaminated samples. In the present study, activities of 236U, 134Cs, and 137Cs, along with 234U, 235U, 238U, in 15 river bank soil and 10 river sediment samples, were measured by ICP-MS/MS and γ spectrometry. The 134Cs activities ...
DOI:
10.1016/j.chemosphere.2019.03.061

9. A 4000-year record of hydrologic variability from the Olympic Mountains, Washington, USA

Author:
Stephen G Smith; Karl W Wegmann; Elana L Leithold; Delwayne R Bohnenstiehl
Source:
Holocene 2019 v.29 no.8 pp. 1273-1291
ISSN:
1477-0911
Subject:
Holocene epoch; X-radiation; ecosystems; fluorescence; global warming; gravity; hydrology; lakes; landscapes; models; mountains; rivers; sediments; stratigraphy; time series analysis; watersheds; Pacific Ocean; Washington (state)
Abstract:
... Sedimentological and geochemical analyses of gravity and piston cores retrieved from Lake Quinault, Washington, reveal an ~4000-year flood-dominated depositional record. Individual flood event layers are identified by combining core stratigraphy, sedimentology, and the ratio of incoherent to coherently scattered x-ray radiation (inc/coh) from µXRF (x-ray fluorescence) core scans. The inc/coh time ...
DOI:
10.1177/0959683619846975

10. Absence of PCB Hot Spot Effect in Walleye Sander vitreus from Lower Green Bay of Lake Michigan

Author:
Charles P. Madenjian; Daniel J. Dembkowski; Daniel A. Isermann; Stuart A. Batterman; Sergei M. Chernyak; Stewart F. Cogswell; Mark E. Holey
Source:
Archives of environmental contamination and toxicology 2019 v.76 no.3 pp. 442-452
ISSN:
0090-4341
Subject:
Sander vitreus; adults; aquatic ecosystems; females; fish communities; habitat preferences; males; polychlorinated biphenyls; rivers; sediments; spawning; Lake Michigan
Abstract:
... Under certain conditions, polychlorinated biphenyl (PCB) concentration in individuals of one sex of an adult fish population may exceed that of the other sex by more than a factor of two. This phenomenon, known as the PCB hot spot effect, has been postulated to be contingent upon the following two conditions: (1) presence of a PCB hot spot in the bottom sediments of the aquatic ecosystem, such tha ...
DOI:
10.1007/s00244-018-00591-9

11. Abundance and characteristics of microplastics in the mangrove sediment of the semi-enclosed Maowei Sea of the south China sea: New implications for location, rhizosphere, and sediment compositions

Author:
Ruilong Li; Linlin Zhang; Baoming Xue; Yinghui Wang
Source:
Environmental pollution 2019 v.244 pp. 685-692
ISSN:
0269-7491
Subject:
color; ecosystems; estuaries; littoral zone; microbial activity; microplastics; particulate organic matter; pollution; polyethylene; rhizosphere; rivers; sediments; South China Sea
Abstract:
... Microplastic pollution of intertidal mangrove ecosystems is receiving growing attention, and scientists suspect that the microplastic pollution of semi-enclosed seas is significantly different from that of other coastal types because of their unique geographical features. However, data on the distributions and characteristics of microplastics in the mangrove sediment of semi-enclosed seas are very ...
DOI:
10.1016/j.envpol.2018.10.089

12. Abundance and community composition of comammox bacteria in different ecosystems by a universal primer set

Author:
Zhirong Zhao; Guohe Huang; Shishi He; Nan Zhou; Mingyuan Wang; Chenyuan Dang; Jiawen Wang; Maosheng Zheng
Source:
Science of the total environment 2019 v.691 pp. 146-155
ISSN:
0048-9697
Subject:
activated sludge; agricultural soils; ammonia; bacteria; community structure; drinking water; ecosystems; environmental factors; genes; genetic markers; littoral zone; nitrification; nitrogen cycle; oligodeoxyribonucleotides; phylogeny; quantitative polymerase chain reaction; rivers; sediments; wastewater treatment
Abstract:
... Complete ammonia oxidizing bacteria (CAOB) have been recognized as a new member of ammonia-oxidizing microorganisms (AOMs) due to its single-step nitrification capability. However, the abundance and diversity of CAOB in environmental ecosystems were still far from known owing to the lack of specific molecular marker. Herein, a universal primer set specifically targeting both clades of CAOB amoA ge ...
DOI:
10.1016/j.scitotenv.2019.07.131

13. Accidental Spill of Palm Stearin Poses Relatively Short-Term Ecological Risks to a Tropical Coastal Marine Ecosystem

Author:
Guang-Jie Zhou; Racliffe Weng Seng Lai; Ronia Chung-tin Sham; Chung-Sum Lam; Katie Wan Yee Yeung; Juan Carlos Astudillo; Kevin King Yan Ho; Mana Man Na Yung; Jason Kin Chung Yau; Kenneth Mei Yee Leung
Source:
Environmental science & technology 2019 v.53 no.21 pp. 12269-12277
ISSN:
1520-5851
Subject:
Oryzias melastigma; Tigriopus japonicus; accidents; estuaries; fecundity; growth retardation; invertebrates; marine ecosystems; microalgae; mortality; palm oils; pollution; risk; rivers; seawater; sediments; stearin; technology; China
Abstract:
... In early August 2017, a serious palm stearin pollution accident occurred in the Pearl River Estuary, South China. While there were already several palm oil related spills around the world, the ecological effects and risks of such accidents to coastal marine environments remain largely unknown. In this study, we found that all seawater and sediment samples collected from six coastal sites were heav ...
DOI:
10.1021/acs.est.9b04636

14. Accumulation and transformation of heavy metals in surface sediments from the Yangtze River estuary to the East China Sea shelf

Author:
Ming Liu; Jingbo Chen; Xueshi Sun; Zhizhou Hu; Dejiang Fan
Source:
Environmental pollution 2019 v.245 pp. 111-121
ISSN:
0269-7491
Subject:
cadmium; chromium; cobalt; continental shelf; copper; estuaries; filtration; heavy metals; humans; lead; nickel; pH; primary productivity; redox potential; rivers; sediments; turbidity; water currents; zinc; East China Sea; Yangtze River
Abstract:
... The concentration and speciation of heavy metals (Cu, Co, Ni, Zn, Cr, Pb and Cd) were studied in surface sediment from the Yangtze River(YR)to the East China Sea (ECS) shelf. The results showed that high contents of metals were found in the YR estuary (YRE) and in the nearshore muddy area, while lower concentrations were found in the YR channel and the ECS shelf. However, after standardization, th ...
DOI:
10.1016/j.envpol.2018.10.128

15. Accumulation of Heavy Metals by Amur Bay Sediments (the Sea of Japan) under the Effect of Biochemical Factors

Author:
D. M. Polyakov; A. A. Mar’yash; A. V. Mozherovskii
Source:
Water resources 2019 v.46 no.2 pp. 209-213
ISSN:
0097-8078
Subject:
arsenic; cadmium; chromium; cobalt; copper; heavy metals; humic substances; hydroxides; iron; lead; manganese; molybdenum; nickel; rivers; sediments; sorption; vanadium; zinc; Sea of Japan
Abstract:
... The average concentrations of elements Fe, Mn, Zn, Pb, Cu, Cr, V, Co, Cd, Ni, As, and Mo in the subcolloidal fraction of bottom sediments were determined in the northern and central parts of the Amur Bay. The concentrations of metals Pb, Co, Ni, Zn, Cr, V, and As in bottom sediments subject to direct influence of the Razdol’naya River were shown to increase by 5–17% because of their sorption on Fe ...
DOI:
10.1134/S0097807819020118

16. Acid mine drainage affects the diversity and metal resistance gene profile of sediment bacterial community along a river

Author:
Xiaohui Zhang; Song Tang; Mao Wang; Weimin Sun; Yuwei Xie; Hui Peng; Aimin Zhong; Hongling Liu; Xiaowei Zhang; Hongxia Yu; John P. Giesy; Markus Hecker
Source:
Chemosphere 2019 v.217 pp. 790-799
ISSN:
0045-6535
Subject:
Halomonas; Planococcaceae; acid mine drainage; arsenic; bacterial communities; byproducts; cadmium; community structure; copper; high-throughput nucleotide sequencing; lead; lotic systems; metal tolerance; mining; pH; pollution; resistance genes; rivers; salinity; sediments; sulfates
Abstract:
... Acid mine drainage (AMD) is one of the most hazardous byproducts of some types of mining. However, research on how AMD affects the bacterial community structure of downstream riverine ecosystems and the distribution of metal resistance genes (MRGs) along pollution gradient is limited. Comprehensive geochemical and high-throughput next-generation sequencing analyses can be integrated to characteriz ...
DOI:
10.1016/j.chemosphere.2018.10.210

17. Aerobic methane production by planktonic microbes in lakes

Author:
Santona Khatun; Tomoya Iwata; Hisaya Kojima; Manabu Fukui; Takuya Aoki; Seito Mochizuki; Azusa Naito; Ai Kobayashi; Ryo Uzawa
Source:
Science of the total environment 2019 v.696 pp. 133916
ISSN:
0048-9697
Subject:
Synechococcus; bacterioplankton; freshwater lakes; littoral zone; methane; methane production; methanogens; phosphonates; rivers; sediments; summer; surveys; temperature profiles
Abstract:
... Methanogenesis in freshwater lakes has classically been considered to arise from anaerobic methanogens in oxygen-depleted sediments. However, the accumulation of supersaturated methane in fully oxygenated water columns is commonly observed in many lakes, and factors responsible for the formation of the subsurface methane maximum (SMM) remain largely unknown. The present study conducted in 14 Japan ...
DOI:
10.1016/j.scitotenv.2019.133916

18. Algal Community Dynamics Within the Savannah River Estuary, Georgia Under Anthropogenic Stress

Author:
Alyssa H. Thomson; Kalina M. Manoylov
Source:
Estuaries and coasts 2019 v.42 no.6 pp. 1459-1474
ISSN:
1559-2723
Subject:
Bacillariophyceae; Phormidium; algae; anthropogenic activities; community structure; confidence interval; dominant species; dredging; ecosystems; estuaries; freshwater; mixing; plankton; rivers; saline water; sedimentation rate; sediments; species richness; standard deviation; turbidity; Georgia; Savannah River
Abstract:
... Estuaries are naturally dynamic ecosystems mixing fresh and marine waters, while consistently varying in depth and discharge due to diurnal tide shifts. Anthropogenic alterations impacting the Savannah River are expected to change the hydrology of the ecosystem and effect algal community structure and composition. The Savannah Harbor Expansion Project began recently with the aim of widening and de ...
DOI:
10.1007/s12237-019-00579-1

19. Alluvial plains formation in response to 100-ka glacial–interglacial cycles since the Middle Pleistocene in the southern Tian Shan, NW China

Author:
Weiliang Huang; Xiaoping Yang; Jessica A. Thompson Jobe; Shengqiang Li; Haibo Yang; Lin Zhang
Source:
Geomorphology 2019 v.341 pp. 86-101
ISSN:
0169-555X
Subject:
Pleistocene epoch; alluvial plains; basins; climate change; climatic factors; climatology; cold; glaciation; landscapes; melting; periodicity; piedmont; rivers; sediments; snowmelt; solar radiation; valleys; Central Asia; China
Abstract:
... The tenet of the Milankovitch theory is that Northern Hemisphere solar insolation, controlled by Earth's orbital is responsible for cyclic climate variations. Eccentricity in this context is responsible for cyclic variability of 100 ka and may drive periodicity in climate change during the middle and late Pleistocene. Although abundant evidence exists for 100 ka cyclic climatic fluctuations drivin ...
DOI:
10.1016/j.geomorph.2019.05.013

20. Alpha and beta diversity of connected benthic–subsurface invertebrate communities respond to drying in dynamic river ecosystems

Author:
Rachel Stubbington; Romain Sarremejane; Thibault Datry
Source:
Ecography 2019 v.42 no.12 pp. 2060-2073
ISSN:
0906-7590
Subject:
benthic organisms; community structure; drying; ecosystems; global change; invertebrates; nestedness; rivers; sediments; species diversity
Abstract:
... Drying disturbances are the primary determinant of aquatic community biodiversity in dynamic river ecosystems. Research exploring how communities respond to disturbance has focused on benthic invertebrates in surface sediments, inadequately representing a connected community that extends into the subsurface. We compared subsurface and benthic invertebrate responses to drying, to identify common an ...
DOI:
10.1111/ecog.04592

21. Alpha radioactivity level along Tigris River sediments in Baghdad governorate area by using CR-39 SSNTD’s

Author:
Saadi M. D. Al-Nuzal; Abdul-Hameed M. J. Al-Obaidy; Sahar Ahmed Amin
Source:
Applied water science 2019 v.9 no.7 pp. 149
ISSN:
2190-5487
Subject:
anthropogenic activities; ecosystems; melting; mountains; radioactivity; radon; rivers; sediments; snow; streams; summer; uranium; winter
Abstract:
... The alpha activities of sediment samples, collected from selected sites along Tigris River in Baghdad city area from January to November 2015, were measured. The measurements were based on the radon exhalation rate Bq m⁻¹ from the sediment samples, of 10.00 g mass. It was found that the higher calculated uranium contents were observed during winter months from November to January, while the lowest ...
DOI:
10.1007/s13201-019-1027-4

22. Aluminum distribution heterogeneity and relationship with nitrogen, phosphorus and humic acid content in the eutrophic lake sediment

Author:
Qingwei Lin; Xue Peng; Biyun Liu; Fenli Min; Yi Zhang; Qiaohong Zhou; Jianmin Ma; Zhenbin Wu
Source:
Environmental pollution 2019 v.253 pp. 516-524
ISSN:
0269-7491
Subject:
aluminum; anthropogenic activities; aquatic ecosystems; eutrophication; humic acids; humus; iron; lakes; nitrogen; nutrients; nutrition; phosphorus; physicochemical properties; rivers; sediments; total nitrogen; total phosphorus; water flow; China
Abstract:
... Increasing amount of aluminum (Al) gets into aquatic ecosystem through anthropogenic activity, but the knowledge about Al migration and relationships with sediments possessing different physico-chemical properties in eutrophic lakes is limited. Here, the Al migration rule and relationships with sediment nutritions in the Hangzhou West Lake, China was investigated, where a certain amount of residua ...
DOI:
10.1016/j.envpol.2019.07.042

23. Amplicon sequencing and imputed metagenomic analysis of waste soil and sediment microbiome reveals unique bacterial communities and their functional attributes

Author:
Surajit De Mandal; Vabeiryureilai Mathipi; Rajendra Bose Muthukumaran; Guruswami Gurusubramanian; Esther Lalnunmawii; Nachimuthu Senthil Kumar
Source:
Environmental monitoring and assessment 2019 v.191 no.12 pp. 778
ISSN:
0167-6369
Subject:
Acidobacteria; Acinetobacter; Bacteroides; Comamonas; Corynebacterium; Escherichia coli; Flavobacterium; Planctomycetes; Prevotella; Pseudomonas aeruginosa; Salmonella enterica; Sphingobacterium; Staphylococcus aureus; Stenotrophomonas; Verrucomicrobia; amino acids; antibiotic resistance; bacterial communities; carbohydrates; databases; ecosystems; genes; hospitals; human health; liquid wastes; metabolism; metagenomics; microbiome; microorganisms; pathogens; ribosomal RNA; rivers; sediments; sequence analysis; solid wastes; xenobiotics
Abstract:
... The discharge of solid and liquid waste from domestic, municipal, and hospital premises pollutes the soil and river ecosystems. However, the diversity and functions of the microbial communities present in these polluted environments are not well understood and may contain harmful microbial communities with specialized metabolic potential. In this present study, we adapted the Illumina sequencing t ...
DOI:
10.1007/s10661-019-7879-0

24. Anaerobic biodegradation of trimethoprim with sulfate as an electron acceptor

Author:
Bin Liang; Deyong Kong; Mengyuan Qi; Hui Yun; Zhiling Li; Ke Shi; E. Chen; Alisa S. Vangnai; Aijie Wang
Source:
Frontiers of environmental science & engineering 2019 v.13 no.6 pp. 84
ISSN:
2095-2201
Subject:
Acetobacterium; Desulfobulbus; Desulfovibrio; Peptococcaceae; activated sludge; antibiotics; biodegradation; bioremediation; demethylation; fermenters; inoculum; kinetics; microbiome; rivers; sediments; sulfates; trimethoprim
Abstract:
... Trimethoprim (TMP) is an antibiotic frequently detected in various environments. Microorganisms are the main drivers of emerging antibiotic contaminant degradation in the environment. However, the feasibility and stability of the anaerobic biodegradation of TMP with sulfate as an electron acceptor remain poorly understood. Here, TMP-degrading microbial consortia were successfully enriched from mun ...
DOI:
10.1007/s11783-019-1168-6

25. Anaerobic degradation of 2,4,5-trichlorophenoxyacetic acid by enrichment cultures from freshwater sediments

Author:
Hassan Al-Fathi; Mandy Koch; Wilhelm G. Lorenz; Ute Lechner
Source:
Environmental science and pollution research international 2019 v.26 no.33 pp. 34459-34467
ISSN:
0944-1344
Subject:
2,4,5-T; 2,4,5-trichlorophenol; 3-chlorophenol; Dehalococcoides mccartyi; Desulfitobacterium hafniense; biodegradation; butyrates; dechlorination; enrichment culture; freshwater; hydrogen; microorganisms; organic acids and salts; rivers; sediments; stoichiometry; Germany
Abstract:
... The anaerobic biodegradation of 2,4,5-trichlorophenoxyacetic acid (2,4,5-T) was investigated using enrichment cultures from freshwater sediments at two different sites in the region of Halle, central Germany. 2,4,5-T and different organic acids or hydrogen were added as possible electron acceptor and electron donors, respectively. The primary enrichment cultures from Saale river sediment completel ...
DOI:
10.1007/s11356-019-06584-y

26. Analysis of Flow Resistance Equations in Gravel‐Bed Rivers With Intermittent Regimes: Calabrian fiumare Data Set

Author:
G. Mendicino; F. Colosimo
Source:
Water resources research 2019 v.55 no.8 pp. 7294-7319
ISSN:
0043-1397
Subject:
bedload; data collection; flow resistance; research; rivers; roughness; sediments; semi-empirical models; water; Italy
Abstract:
... This study addresses the evaluation of flow resistance in natural gravel‐bed rivers. Through a new data set collected on 136 reaches of 78 gravel‐bed rivers (Calabrian fiumare) in southern Italy, different conventional flow resistance equations to predict mean flow velocity in gravel‐bed rivers were tested in their original form. These equations have shown considerable disagreement with observed d ...
DOI:
10.1029/2019WR024819

27. Analysis of changes in characteristics of flood and sediment yield in typical basins of the Yellow River under extreme rainfall events

Author:
Yang Zhao; Wenhong Cao; Chunhong Hu; Yousheng Wang; Zhaoyan Wang; Xiaoming Zhang; Bisheng Zhu; Chen Cheng; Xiaolin Yin; Bing Liu; Gang Xie
Source:
Catena 2019 v.177 pp. 31-40
ISSN:
0341-8162
Subject:
basins; flood control; governance; prediction; probability; rain; rivers; runoff; sediment transport; sediment yield; sediments; soil; water conservation; watersheds; Yellow River
Abstract:
... The future trend of water and sediment variation is closely related to the governance of the Yellow River. The increasingly frequent occurrence of extreme rainfall events has rendered the future water and sediment situation of the Yellow River uncertain. Understanding the characteristics of flood and sediment yield of the river basin under extreme rainfall conditions at different times is a prereq ...
DOI:
10.1016/j.catena.2019.02.001

28. Analysis of lateral sediment connectivity and its connection to debris flow intensity patterns at different return periods in the Fella River system in northeastern Italy

Author:
Nora Schopper; Martin Mergili; Simone Frigerio; Marco Cavalli; Ronald Poeppl
Source:
Science of the total environment 2019 v.658 pp. 1586-1600
ISSN:
0048-9697
Subject:
mass movement; rivers; roads; sediments; watersheds; Italy
Abstract:
... A wide variety of issues are now being addressed using the concept of connectivity, which has initiated the development of various methods to assess a river's relationship to its catchment. This study tests two well-established methods, the Effective Catchment Area (ECA) and the Index of Connectivity (IC) in the study area of the Fella River in northeastern Italy, to gain an idea of their potentia ...
DOI:
10.1016/j.scitotenv.2018.12.288

29. Analytical approach on surface active agents in the environment and challenges

Author:
Ramsingh Kurrey; Mithlesh Mahilang; Manas Kanti Deb; Kamlesh Shrivas
Source:
Trends in environmental analytical chemistry 2019 v.21 pp. e00061
ISSN:
2214-1588
Subject:
adhesives; aerosols; analytical methods; detergents; fabrics; paints; quality control; quantitative analysis; rivers; sediments; sewage; soaps; soil; surfactants; wastewater; water reservoirs
Abstract:
... Surface active agents (SAAs) are a class of compounds, which is used in variety of products such as detergents, fabric softeners, soaps, paints, adhesives, inks and anti-fogs. After the use of these products containing surfactants are disposed in water reservoirs. The separation and determination of surfactants from complex matrices become challenging for analytical chemists. The fundamentals on s ...
DOI:
10.1016/j.teac.2019.e00061

30. Analyzing bank profile shape of alluvial stable channels using robust optimization and evolutionary ANFIS methods

Author:
Azadeh Gholami; Hossein Bonakdari; Isa Ebtehaj; Seyed Hamed Ashraf Talesh; Saeed Reza Khodashenas; Ali Jamali
Source:
Applied water science 2019 v.9 no.3 pp. 40
ISSN:
2190-5487
Subject:
algorithms; equations; mathematical models; rivers; sediments
Abstract:
... In natural rivers and artificial channels in addition to the channel dimensions (widening, reduction in slope and depth in the channel banks), formed shape profile in the case that the sediment on the banks with no movement (thresholds state) is of considerable importance for engineers. To determine the bank shape profiles, various theoretical, empirical and statistical relations have been provide ...
DOI:
10.1007/s13201-019-0928-6

31. Anammox response to natural and anthropogenic impacts over the Yangtze River

Author:
Liming Chen; Sitong Liu; Qian Chen; Guibing Zhu; Xuan Wu; Jiawen Wang; Xiaofei Li; Lijun Hou; Jinren Ni
Source:
Science of the total environment 2019 v.665 pp. 171-180
ISSN:
0048-9697
Subject:
anaerobic ammonium oxidation; anthropogenic activities; bacterial communities; dams (hydrology); denitrification; ecosystems; mountains; nitrogen; nitrogen cycle; rivers; sediments; spatial variation; species diversity; stable isotopes; total organic carbon; tracer techniques; Yangtze River
Abstract:
... Increasing attention has been paid to anaerobic ammonium oxidation (anammox) in river ecosystems due to their special role in the global nitrogen cycle from land to the ocean. This study have revealed the spatial patterns of anammox bacterial response to geographic characteristics and dam operation along the Yangtze River, using ¹⁵N tracers and molecular analyses of microbial communities in sedime ...
DOI:
10.1016/j.scitotenv.2019.02.096

32. Antibiotic-manufacturing sites are hot-spots for the release and spread of antibiotic resistance genes and mobile genetic elements in receiving aquatic environments

Author:
Juan José González-Plaza; Khald Blau; Milena Milaković; Tamara Jurina; Kornelia Smalla; Nikolina Udiković-Kolić
Source:
Environment international 2019 v.130 pp. 104735
ISSN:
0160-4120
Subject:
Escherichia coli; antibiotic resistance; antibiotic resistance genes; antibiotics; aquatic environment; bacteria; effluents; host range; industrial wastes; interspersed repetitive sequences; manufacturing; multiple drug resistance; pathogens; plasmids; pollution; quantitative polymerase chain reaction; risk factors; rivers; sediments; streams; veterinary drugs
Abstract:
... High antibiotic releases from manufacturing facilities have been identified as a risk factor for antibiotic resistance development in bacterial pathogens. However, the role of antibiotic pollution in selection and transferability of antibiotic resistance genes (ARGs) is still limited. In this study, we analyzed effluents from azithromycin-synthesis and veterinary-drug formulation facilities as wel ...
DOI:
10.1016/j.envint.2019.04.007

33. Antifungal activity of Burkholderia sp. HD05 against Saprolegnia sp. by 2-pyrrolidone-5-carboxylic acid

Author:
Luoqiang Zhang; Delin Xu; Feifei Wang; Qizhong Zhang
Source:
Aquaculture 2019 pp. -
ISSN:
0044-8486
Subject:
Burkholderia; Ctenopharyngodon idella; Saprolegnia; active ingredients; antifungal properties; bacteria; biological control agents; carbon; carboxylic acids; culture media; fish culture; gel chromatography; glutamic acid; high performance liquid chromatography; hyphae; nuclear magnetic resonance spectroscopy; rivers; sediments; spore germination; stable isotopes; thermal stability
Abstract:
... A bacterium identified as Burkholderia sp. HD05 isolated from Baimang River sediment was determined to have strong antifungal activity towards the hyphal growth as well as spore germination of pathogenic Saprolegnia sp. The antifungal substance was secreted into the supernatant and was thermo-stable. The active substance was purified from the HD05 fermentation broth by silica gel column chromatogr ...
DOI:
10.1016/j.aquaculture.2019.06.012

34. Applicability of API ZYM to capture seasonal and spatial variabilities in lake and river sediments

Author:
Drashti Patel; Renee Gismondi; Ali Alsaffar; Sonia M. Tiquia-Arashiro
Source:
Environmental technology 2019 v.40 no.24 pp. 3227-3239
ISSN:
1479-487X
Subject:
autumn; carboxylic ester hydrolases; ecosystems; environmental factors; enzyme activity; extracellular enzymes; lakes; microbial communities; organic matter; rivers; seasonal variation; sediments; spring; streams; summer; suspended sediment; water quality; watersheds; winter
Abstract:
... Waters draining into a lake carry with them much of the suspended sediment that is transported by rivers and streams from the local drainage basin. The organic matter processing in the sediments is executed by heterotrophic microbial communities, whose activities may vary spatially and temporally. Thus, to capture and evaluate some of these variabilities in the sediments, we sampled six sites: thr ...
DOI:
10.1080/09593330.2018.1468492

35. Application of Backpack-Mounted Mobile Mapping System and Rainfall–Runoff–Inundation Model for Flash Flood Analysis

Author:
Takahiro Sayama; Koji Matsumoto; Yuji Kuwano; Kaoru Takara
Source:
Water 2019 v.11 no.5 pp. -
ISSN:
2073-4441
Subject:
case studies; floods; models; mountains; remote sensing; rivers; satellites; sediments; surveys; topography; watersheds; Japan
Abstract:
... Satellite remote sensing has been used effectively to estimate flood inundation extents in large river basins. In the case of flash floods in mountainous catchments, however, it is difficult to use remote sensing information. To compensate for this situation, detailed rainfall–runoff and flood inundation models have been utilized. Regardless of the recent technological advances in simulation ...
DOI:
10.3390/w11050963

36. Application of luminescence age models to heterogeneously bleached quartz grains from flood deposits in Tamilnadu, southern India: Reconstruction of past flooding

Author:
Mahadev; Atul K. Singh; Manoj K. Jaiswal
Source:
Quaternary international 2019 v.513 pp. 95-106
ISSN:
1040-6182
Subject:
anthropogenic activities; bleaching; climate; climate change; floodplains; floods; historical records; luminescence; models; quartz; rivers; sediments; solar radiation; India
Abstract:
... High magnitude floods are generally associated with wet periods or shift in climate. Recent events of increased flooding in southern India raises the question of these to be either associated with human impact or a general climate shift. Due to lack of instrumental/historical records beyond a certain period, one need to look for fluvial records e.g. slack water deposit, levees deposit and signatur ...
DOI:
10.1016/j.quaint.2019.02.037

37. Apportioning contributions of individual rill erosion processes and their interactions on loessial hillslopes

Author:
Chao Qin; Fenli Zheng; Glenn V. Wilson; Xunchang J. Zhang; Ximeng Xu
Source:
Catena 2019 v.181 pp. 104099
ISSN:
0341-8162
Subject:
equations; land degradation; photogrammetry; prediction; rill erosion; rivers; sediments; soil erosion models; topographic slope
Abstract:
... Channels (rill, ephemeral gully, gully and river channel) exhibit a continuum of sizes and flow magnitudes. Rill erosion, as the initial stage of channel erosion, accounts for >80% of total eroded sediments on sloping farming lands in many parts of the world. Previous researches often regard rill erosion as an entirety or focus on individual rill erosion process separately. Few attentions have bee ...
Handle:
10113/6466702
DOI:
10.1016/j.catena.2019.104099

38. Apportionment of sources of heavy metals to agricultural soils using isotope fingerprints and multivariate statistical analyses

Author:
Pengcong Wang; Zhonggen Li; Jinling Liu; Xiangyang Bi; Yongqiang Ning; Shaochen Yang; Xiaojing Yang
Source:
Environmental pollution 2019 v.249 pp. 208-216
ISSN:
0269-7491
Subject:
agricultural soils; anthropogenic activities; cadmium; cluster analysis; coal; combustion; copper; dust; fly ash; heavy metals; incinerators; isotopes; lead; mercury; mixing; multivariate analysis; nickel; pollutants; pollution control; refining; rivers; sediments; soil parent materials; statistical models; zinc; China
Abstract:
... Apportioning sources of environmental pollutants is key to controlling pollution. In this study, the sources of heavy metals to 234 agricultural soils from the Jianghan Plain (JHP) (∼22454 km2) in central China were discriminated between using Cd and Pb isotope compositions and multivariate statistical analyses. Concentrations of some metals in JHP soils (0.48 ± 0.2, 48.2 ± 15.9, 0.12 ± 0.23, 48.8 ...
DOI:
10.1016/j.envpol.2019.03.034

39. Arsenic concentration, speciation, and risk assessment in sediments of the Xijiang River basin, China

Author:
Hai-bo Wang; Jia-ming Xu; Mario Alberto Gomez; Zhong-liang Shi; Shi-feng Li; Shu-yan Zang
Source:
Environmental monitoring and assessment 2019 v.191 no.11 pp. 663
ISSN:
0167-6369
Subject:
aluminum; arsenic; carbonates; fractionation; iron; manganese; organic matter; pollution; risk; risk assessment; rivers; sediments; watersheds; China
Abstract:
... In order to acquire the spatial distribution, speciation, and risk assessment of arsenic (As), 18 sediment samples were collected in the middle and upper reaches (Nanpan River, Beipan River, Hongshui River, Diaojiang River, and Duliu River) of the Xijiang River basin, China. The chemical fractions of As in the collected sediments were mainly dominated by the residual fraction and the Fe (Mn, Al) o ...
DOI:
10.1007/s10661-019-7883-4

40. Arsenic in the waters and sediments of the Humboldt River, North-Central Nevada, USA: hydrological and mineralogical investigation

Author:
Shahnewaz Mohammad; Regina N. Tempel
Source:
Environmental earth sciences 2019 v.78 no.17 pp. 543
ISSN:
1866-6280
Subject:
arsenic; clay minerals; dissolved oxygen; electrical conductivity; evaporation; factor analysis; geochemistry; hydrochemistry; pH; redox potential; river water; rivers; scanning electron microscopy; sediments; stream channels; sulfide minerals; Nevada
Abstract:
... Arsenic (As) concentration in the Humboldt River (HR) water ranges from 0.012 to 0.06 mg/L, with an average of 0.032 mg/L. The river water is alkaline with pH 8.4–9.3 and oxic with average 12 mg/L of dissolved O₂ and + 139 mV of oxidation–reduction potential (ORP). The river water contains an average specific electrical conductivity of 1000 µS/cm with elevated B (average 0.77 mg/L), Li (average 0. ...
DOI:
10.1007/s12665-019-8552-1

41. Arsenic pollution of sediments in China: An assessment by geochemical baseline

Author:
Lanfang Han; Bo Gao; Hong Hao; Jin Lu; Dongyu Xu
Source:
Science of the total environment 2019 v.651 pp. 1983-1991
ISSN:
0048-9697
Subject:
arsenic; frequency distribution; industrial effluents; issues and policy; pollution; rivers; sediments; soil; temporal variation; wastewater; watersheds; China; Yangtze River; Yellow River
Abstract:
... Arsenic (As) contamination in sediments has been reported worldwide. However, few studies have investigated As contamination on a national scale in China. This study aims to address this gap by analyzing the existing literature on As contamination and sediment samples collected from ten main river basins: the Songhua River Basin (SRB), Liao River Basin (LRB), Hai River Basin (HRB), Yellow River Ba ...
DOI:
10.1016/j.scitotenv.2018.09.381

42. Artificially oxygenating the Swan River estuary increases dissolved oxygen concentrations in the water and at the sediment interface

Author:
Sarah J. Larsen; Kieryn L. Kilminster; Alessandra Mantovanelli; Zoë J. Goss; Georgina C. Evans; Lee D. Bryant; Daniel F. McGinnis
Source:
Ecological engineering 2019 v.128 pp. 112-121
ISSN:
0925-8574
Subject:
acoustics; anaerobic conditions; biogeochemical cycles; dissolved oxygen; ecological restoration; estuaries; fauna; fish; freshwater lakes; hydrodynamics; organic matter; oxygen; rivers; sediment-water interface; sediments; urbanization; water quality; Australia
Abstract:
... The upper reaches of the Swan River estuary (Perth, Australia) has a history of eutrophication-related oxygen depletion, which has contributed to poor water quality and fish deaths. To alleviate hypoxic conditions, a trial side-stream supersaturation (SSS) oxygenation plant was established at Guildford (39 km upstream of the estuary mouth) in 2009. After notable success, a second plant was constru ...
DOI:
10.1016/j.ecoleng.2018.12.032

43. Ascidian spicules of Quaternary sediments from the lower slope of the Campos Basin (Brazil)

Author:
Elizabete Pedrão Ferreira; Cleber Fernandes Alves; Antonio Enrique Sayão Sanjinés; Mariana Cunha Alves
Source:
Quaternary international 2019 v.508 pp. 116-124
ISSN:
1040-6182
Subject:
basins; climate; frequency distribution; monitoring; organic matter; rivers; sediment transport; sediments; Brazil
Abstract:
... Piston core GL-77 was collected in the lower slope of the northern Campos Basin, Brazil, and consists essentially of muds that have been deposited in turbiditic currents over the last 130 ka, at least, which corresponds to the Upper Pleistocene-Holocene interval. The identified ascidian spicules belong to the Didemnidae Family and are represented by species Micrascidites vulgaris, Bonetia brevis, ...
DOI:
10.1016/j.quaint.2018.11.008

44. Assessing Climate Change Impacts on Streamflow, Sediment and Nutrient Loadings of the Minija River (Lithuania): A Hillslope Watershed Discretization Application with High-Resolution Spatial Inputs

Author:
Natalja Čerkasova; Georg Umgiesser; Ali Ertürk
Source:
Water 2019 v.11 no.4 pp. -
ISSN:
2073-4441
Subject:
Soil and Water Assessment Tool model; climate change; computer software; land use; model validation; pollution load; rivers; sediment yield; sediments; soil; stream flow; topographic slope; total nitrogen; total phosphorus; watersheds; Lithuania
Abstract:
... In this paper we focus on the model setup scheme for medium-size watershed with high resolution, multi-site calibration, and present results on the possible changes of the Minija River in flow, sediment load, total nitrogen (TN), and total phosphorus (TP) load in the near-term (up to 2050) and long-term (up to 2099) in the light of climate change (RCP 4.5 and RCP 8.5 scenarios) under business-as-u ...
DOI:
10.3390/w11040676

45. Assessing Submerged Vegetation Roughness in Streambed under Clear Water Condition Using Physical Modeling

Author:
Hosna Shafaei; Ata Amini; Azim Shirdeli
Source:
Water resources 2019 v.46 no.3 pp. 377-383
ISSN:
0097-8078
Subject:
hydraulic flumes; models; rivers; roughness; sediments; shrublands; stream channels; submerged aquatic plants; vegetation cover; waterways
Abstract:
... Roughness coefficient, also called Manning’s coefficient, is one of the most important hydraulic parameters in the rivers. This coefficient, in addition to the flow conditions, depends on streambed characteristics such as type and density of vegetation. In this study, a physical model in a flume with 7 m length, 0.25 m width and 0.25 m height was conducted to evaluate the streambed roughness coeff ...
DOI:
10.1134/S0097807819030084

46. Assessing Water and Nutrient Long-Term Dynamics and Loads in the Enxoé Temporary River Basin (Southeast Portugal)

Author:
David Brito; Ramiro Neves; Maria A. Branco; Ângela Prazeres; Sara Rodrigues; Maria C. Gonçalves; Tiago B. Ramos
Source:
Water 2019 v.11 no.2 pp. -
ISSN:
2073-4441
Subject:
algal blooms; chlorophyll; drinking water; eutrophication; geometry; models; nitrogen; nutrients; phosphorus; pollution load; rivers; runoff; sediments; soil water; toxicity; watersheds; Portugal
Abstract:
... The Enxoé reservoir has been exhibiting frequent high chlorophyll-a concentrations (reaching a geometric mean six times the national limit for eutrophication of 10 μg L−1) since 2000, and represents the reservoir with the highest eutrophic state in Portugal. Toxic algal blooms have also been observed, which pose serious challenges to water managers, as the reservoir is used for pot ...
DOI:
10.3390/w11020354

47. Assessing anthropogenic pressure in the St. Lawrence River using traits of benthic macroinvertebrates

Author:
Mélanie Desrosiers; Philippe Usseglio-Polatera; Virginie Archaimbault; Floriane Larras; Ginette Méthot; Bernadette Pinel-Alloul
Source:
Science of the total environment 2019 v.649 pp. 233-246
ISSN:
0048-9697
Subject:
asexual reproduction; benthic organisms; climate; community structure; copper; ecosystems; heavy metals; lead; longevity; macroinvertebrates; models; multivoltine habit; nutrients; organic carbon; polycyclic aromatic hydrocarbons; rivers; sediment contamination; sediments; zinc; Saint Lawrence River
Abstract:
... This study aims to evaluate the anthropogenic pressure in the St. Lawrence River by assessing the relationships between chemical contamination of sediments and benthic community structure with the trait-based approach. Organic and inorganic contaminants as well as other sediment variables (sediment grain size, total organic carbon, nutrients, etc.) and benthic invertebrate assemblages were determi ...
DOI:
10.1016/j.scitotenv.2018.08.267

48. Assessing coastal erosion and accretion trends along two contrasting subtropical rivers based on remote sensing data

Author:
L. Valderrama-Landeros; F. Flores-de-Santiago
Source:
Ocean & coastal management 2019 v.169 pp. 58-67
ISSN:
0964-5691
Subject:
coastal zone management; coasts; dams (hydrology); geographic information systems; infrastructure; pollution load; rivers; sediment yield; sediments; shorelines; spatial data; surveys; suspended sediment; watersheds; wetlands; Mexico
Abstract:
... The temporal shoreline position is a key indicator of coastal development and provides information on beach dynamics. Previous studies have indicated that there is a strong relationship between riverine sediment fluxes and beach volume. As such, worldwide hydroelectric projects and the associated damming infrastructure have decreased suspended sediment loads, and consequently increasing coastal er ...
DOI:
10.1016/j.ocecoaman.2018.12.006

49. Assessing model parameters sensitivity and uncertainty of streamflow, sediment, and nutrient transport using SWAT

Author:
Abdullah O. Dakhlalla; Prem B. Parajuli
Source:
Information processing in agriculture 2019 v.6 no.1 pp. 61-72
ISSN:
2214-3173
Subject:
algorithms; denitrification; model validation; models; nitrogen; nutrient transport; parameter uncertainty; phosphorus; pollution load; rivers; roughness; sediments; soil; stream flow; total nitrogen; total phosphorus; watersheds
Abstract:
... The objectives of this study were to (1) simulate streamflow, total sediment (TS), total phosphorus (TP), and total nitrogen (TN) loads; and (2) use the sequential uncertainty fitting (SUFI-2) algorithm to quantify the model parameter sensitivity and uncertainty in simulating streamflow, TS, TP, and TN loads using Soil and Water Assessment (SWAT) model in Big Sunflower River watershed (BSRW). The ...
DOI:
10.1016/j.inpa.2018.08.007
CHORUS:
10.1016/j.inpa.2018.08.007

50. Assessing quasi-equilibrium fining and concavity of present rivers: A modelling approach

Author:
Michael Nones; Arianna Varrani; Mariateresa Franzoia; Giampaolo Di Silvio
Source:
Catena 2019 v.181 pp. 104073
ISSN:
0341-8162
Subject:
basins; hydrology; models; rivers; sediments; tectonics; Brazil
Abstract:
... The aim of the paper is presenting a very simple but reliable tool to reproduce the evolution of alluvial rivers worldwide, typically characterized by longitudinal profile concavity and downstream bottom fining. A zero-dimensional, two-reach, two-grainsize hydro-morphological model has been developed to simulate the long-term evolution of alluvial watercourses up to the present state, starting fro ...
DOI:
10.1016/j.catena.2019.104073