Occurrence and distribution of emerging contaminants in mine-impacted lake water and potential use as co-tracers of anthropogenic activity in the subarctic region, Northwest Territories, Canada

2021 ◽  
pp. 112034
Author(s):  
YingYing Liu ◽  
Carol J. Ptacek ◽  
Laura G. Groza ◽  
Robin Staples ◽  
David W. Blowes
Keyword(s):  
Northwest Territories ◽  
Lake Water ◽  
Emerging Contaminants ◽  
Anthropogenic Activity ◽  
Subarctic Region ◽  
Potential Use

Acoustic detections of Arctic marine mammals near Ulukhaktok, Northwest Territories, Canada

2019 ◽  
Vol 97 (1) ◽  
pp. 72-80 ◽  
Author(s):  
W.D. Halliday ◽  
M.K. Pine ◽  
S.J. Insley ◽  
R.N. Soares ◽  
P. Kortsalo ◽  
...  
Keyword(s):  
Northwest Territories ◽  
Marine Mammals ◽  
Bowhead Whale ◽  
The Arctic ◽  
Delphinapterus Leucas ◽  
Anthropogenic Activity ◽  
Marine Animals ◽  
Vocal Activity ◽  
Beluga Whale Delphinapterus Leucas ◽  
Passive Acoustic

The Arctic marine environment is changing rapidly through a combination of sea ice loss and increased anthropogenic activity. Given these changes can affect marine animals in a variety of ways, understanding the spatial and temporal distributions of Arctic marine animals is imperative. We use passive acoustic monitoring to examine the presence of marine mammals near Ulukhaktok, Northwest Territories, Canada, from October 2016 to April 2017. We documented bowhead whale (Balaena mysticetus Linnaeus, 1758) and beluga whale (Delphinapterus leucas (Pallas, 1776)) vocalizations later into the autumn than expected, and we recorded bowhead whales in early April. We recorded ringed seal (Pusa hispida (Schreber, 1775)) vocalizations throughout our deployment, with higher vocal activity than in other studies and with peak vocal activity in January. We recorded bearded seals (Erignathus barbatus (Erxleben, 1777)) throughout the deployment, with peak vocal activity in February. We recorded lower bearded seal vocal activity than other studies, and almost no vocal activity near the beginning of the spring breeding season. Both seal species vocalized more when ice concentration was high. These patterns in vocal activity document the presence of each species at this site over autumn and winter and are a useful comparison for future monitoring.

scholarly journals Worldwide moderate-resolution mapping of lake surface chl-a reveals variable responses to global change (1997-2020)

2021 ◽  
Author(s):  
Benjamin Kraemer ◽  
Karan Kakouei ◽  
Catalina Munteanu ◽  
Michael Thayne ◽  
Rita Adrian
Keyword(s):  
Water Quality ◽  
Human Activity ◽  
Lake Water ◽  
Anthropogenic Activity ◽  
Management Decision ◽  
Lake Area ◽  
Lake Water Quality ◽  
Chl A ◽  
Moderate Resolution ◽  
Resolution Mapping

Anthropogenic activity is leading to widespread changes in lake water quality--a key contributor to socio-ecological health. But, the anthropogenic forces affecting lake water quality (climate change, land use change, and invasive species) are unevenly distributed across lakes, across the seasonal cycle, and across space within lakes, potentially leading to highly variable water quality responses that are poorly documented at the global scale. Here, we used 742 million chlorophyll-a (chl-a) observations merged over 6 satellite sensors (daily, 1 to 4 km resolution) to quantify water quality changes from 1997 to 2020 in 345 globally-distributed large lakes. Chl-a decreased across 56% of the cumulative total lake area, challenging the putative widespread increase in chl-a that is expected due to human activity. 18% of lakes exhibited both significant positive and significant negative chl-a trends across different locations or times of the year. This spatiotemporal complexity demonstrates the value of moderate resolution mapping of lake chl-a to inform water management decision-making and to determine the local ecological consequences of human activity.

scholarly journals Kopalińskie Lake as an example of an anthropogenic reservoir of the southern Baltic Sea coast

2012 ◽  
Vol 12 (1) ◽  
pp. 3-10
Author(s):  
Roman Cieśliński ◽  
Alicja Olszewska
Keyword(s):  
Water Balance ◽  
Lake Water ◽  
The Other ◽  
Anthropogenic Activity ◽  
Chemical Characteristics ◽  
Lake Basin ◽  
Coastal Lakes ◽  
Basin Morphometry ◽  
Physico Chemical ◽  
Sea Coast

Abstract The aim of this study is to discuss the water balance of Kopalińskie Lake, which is one of a few reservoirs on the Polish coast formed from anthropogenic activity. To realize this aim, lake basin morphometry and catchment hydrography were characterized. Moreover, the influence of the sea and the physico-chemical characteristics of the lake water were defined. As a result, the main characteristics of the lake and its catchment were found. Common characteristics of Kopalińskie Lake, as well as the characteristics that differentiate this reservoir from the other coastal lakes located on the Polish coast are presented in this work.

scholarly journals Occurrence of caffeine in wastewater and sewage and applied techniques for analysis: a review

2019 ◽  
Vol 44 (4) ◽  
pp. 11
Author(s):  
César Augusto Marasco Júnior ◽  
Natália Da Costa Luchiari ◽  
Paulo Clairmont Feitosa Lima Gomes
Keyword(s):  
Illicit Drugs ◽  
Emerging Contaminants ◽  
Anthropogenic Activity ◽  
Emerging Contaminant ◽  
Environmental Matrices ◽  
Nontarget Organisms ◽  
Regulatory Aspects ◽  
Removal Technologies ◽  
Harmful Effects ◽  
As Effects

Emerging contaminants are substances found in the environment whose concentrations vary from µg to ng L-1 and whose presence in wastewater has gained popularity in the scientific community due to the potential impacts these compounds can cause to the environment. This designation concerns the lack of legislation to regulate their discharge or even to monitor these compounds. Moreover, emerging contaminants are capable of causing harmful effects to nontarget organisms and therefore affect the ecosystem balance. There are several compounds classified as emerging contaminants such as pharmaceuticals, illicit drugs, hormones, pesticides, among others. And among them, caffeine is considered an emerging contaminant and can be highlighted due its presence in medicines, beverages, foodstuff and several other products. In addition, it is a compound used worldwide recognized as a marker of anthropogenic activity. In this review, we present a discussion about emerging contaminants, focusing on caffeine, regulatory aspects that involve the theme, as well as effects on organisms, removal technologies and techniques for analyzing these compounds in environmental matrices.

Anthropogenic Markers

2011 ◽  
Author(s):  
Thomas S. Bianchi ◽  
Elizabeth A. Canuel
Keyword(s):  
Organic Matter ◽  
Organic Contaminants ◽  
Aquatic Ecosystems ◽  
Flame Retardants ◽  
Emerging Contaminants ◽  
Structural Features ◽  
Pharmaceutical Products ◽  
Anthropogenic Markers ◽  
Polycyclic Aromatic ◽  
Potential Use

This chapter examines the application of anthropogenic compounds as biomarkers. Since World War II, human activities have introduced a wide array of compounds into the environment, including insecticides such as dichloro-diphenyl-trichloroethane and pesticides, halocarbons (chlorofluorocarbons), sewage products (coprostanol), and polycyclic aromatic hydrocarbons (PAHs). The chapter introduces structural features of these compounds, their distribution and transformation in the environment, and their potential use(s) as tracers. It presents examples of how relationships between anthropogenic markers and biomarkers can be used to provide information about the sources, delivery, and fate of natural organic matter in aquatic ecosystems. It introduces various emerging contaminants (personal care pharmaceutical products, caffeine, and flame retardants) and their potential use as tracers for anthropogenic organic matter in aquatic ecosystems. It describes how δ‎13C, stable isotopes of Cl and Br, and radiocarbon can be used to apportion sources of organic contaminants (e.g., PAHs and PCBs).

scholarly journals Occurrence, Removal and Bioaccumulation of Perfluoroalkyl Substances in Lake Chaohu, China

2019 ◽  
Vol 16 (10) ◽  
pp. 1692 ◽  
Author(s):  
Xu Pan ◽  
Jing Ye ◽  
Hui Zhang ◽  
Jun Tang ◽  
Dandan Pan
Keyword(s):  
Lake Water ◽  
Emerging Contaminants ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Perfluoroalkyl Substances ◽  
Lake Chaohu ◽  
Liquid Chromatograph ◽  
Perfluorodecanoic Acid ◽  
Long Chain

The perfluoroalkyl substances (PFAAs) have received growing attention in recent years as emerging contaminants in the aquatic environment. The occurrence, removal and bioaccumulation of fourteen PFAAs (C4–C14 carboxylate; C4, C6, C8 sulfonates) were investigated in Lake Chaohu, China. The concentrations of the selected PFAAs in inflowing river, lake water and sewage treatment plant (STP) samples were analyzed by ultra performance liquid chromatograph (UPLC–MS/MS). The results showed that perfluorohexanesulfonic acid (PFHxS), perfluorobutane sulfonate (PFBS), perfluorobutyric acid (PFBA) and perfluoropentanoic acid (PFPeA), instead of perfluorooctanoic acid (PFOA), were predominant PFAAs in the inflowing river and lake water with maximum concentrations in the ranges of 52.2–1866 and 27–236 ng L−1, respectively. The highest concentrations of total PFAAs were detected in the western rivers. The effluents from seven STPs were likely important sources of PFAAs in surface water, and the amount of the daily fluxes in the effluent were 132 g for short-chain PFAAs and 109 g for long-chain PFAAs. PFAAs were widely detected in Chinese icefish (Neosalanx tangkahkeii taihuensis) collected from Lake Chaohu, with maximal concentrations ranging from 1.79 ng g−1 to 50.9 ng g−1. The logarithmic bioaccumulation factors of perfluorodecanoic acid (PFDA, 3.5), perfluorooctane sulfonate (PFOS, 3.35) and perfluorononanoic acid (PFNA, 3.31) indicated the bioaccumulation of these long-chain PFAAs. This study is useful for enhancing our understanding of the pollution profiles of PFAAs and their environmental health risk in the freshwater lake.

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