Results 31 to 40 of about 5,020 (178)

Catchment liming creates recolonization opportunity for sensitive invertebrates in a smelter impacted landscape

Journal of Limnology, 2016
The response of a sensitive indicator species to the effects of catchment liming was assessed in a lake severely impacted by atmospheric emissions from a metal smelter in Sudbury, Canada.
John M. Gunn, Brian W. Kielstra, Erik Szkokan-Emilson   +2 more
doaj   +1 more source

Toxicity of sediments in eight urban stormwater management ponds: bioassessment by oligochaete community metrics used in the sediment quality triad

Water Science and Technology, 2023
Implemented for decades as part of the ‘best management practices (BMPs)’ for controlling urban runoff impacts on receiving waters, stormwater management ponds (SMPs) have been increasingly viewed as potential habitats for urban wildlife.
Guillaume Tixier, Quintin Rochfort, Lee Grapentine, Jiri Marsalek, Michel Lafont, Régis Vivien   +5 more
doaj   +1 more source

Long-Term Trends in Regional Wet Mercury Deposition and Lacustrine Mercury Concentrations in Four Lakes in Voyageurs National Park

Applied Sciences, 2021
Although anthropogenic mercury (Hg) releases to the environment have been substantially lowered in the United States and Canada since 1990, concerns remain for contamination in fish from remote lakes and rivers where atmospheric deposition is the ...
Mark E. Brigham, David D. VanderMeulen, Collin A. Eagles-Smith, David P. Krabbenhoft, Ryan P. Maki, John F. DeWild   +5 more
doaj   +1 more source

Perfluoroalkyl acids in the Canadian environment: Multi-media assessment of current status and trends

Environment International, 2013
In Canada, perfluoroalkyl acids (PFAAs) have been the focus of several monitoring programs and research and surveillance studies. Here, we integrate recent data and perform a multi-media assessment to examine the current status and ongoing trends of ...
Sarah B. Gewurtz, Sean M. Backus, Amila O. De Silva, Lutz Ahrens, Alain Armellin, Marlene Evans, Susan Fraser, Melissa Gledhill, Paula Guerra, Tom Harner, Paul A. Helm, Hayley Hung, Nav Khera, Min Gu Kim, Martha King, Sum Chi Lee, Robert J. Letcher, Pamela Martin, Chris Marvin, Daryl J. McGoldrick, Anne L. Myers, Magella Pelletier, Joe Pomeroy, Eric J. Reiner, Myriam Rondeau, Marie-Claude Sauve, Mark Sekela, Mahiba Shoeib, Daniel W. Smith, Shirley Anne Smyth, John Struger, Doug Spry, Jim Syrgiannis, Jasmine Waltho   +33 more
doaj   +1 more source

Corn Zein Nanocarriers for Agrochemical Delivery and Smart Packaging

Advanced Sustainable Systems, EarlyView.
This review explores zein, a corn‐derived biodegradable protein, as a multifunctional nanocarrier for sustainable agriculture and packaging. It examines advances in agrochemical delivery, smart packaging, and stimuli‐responsive systems, while addressing scalability, environmental fate, and regulatory barriers.
Muhammad Shahidul Islam, Debela T. Tadele, Tizazu H. Mekonnen   +2 more
wiley   +1 more source

Soil biota sensitivity to hydroclimate variability in a polar desert ecosystem

Arctic, Antarctic, and Alpine Research
An anomalous warm weather event in the Antarctic McMurdo Dry Valleys on 18 March 2022 created an opportunity to characterize soil biota communities most sensitive to freeze–thaw stress.
Meredith D. Snyder, Byron J. Adams, Abigail Borgmeier, Jesse Jorna, Sarah N. Power, Mark R. Salvatore, John. E. Barrett   +6 more
doaj   +1 more source

Fire Histories and Rainforest Aboriginal Archaeology in the Wet Tropics Bioregion, North Queensland

Archaeology in Oceania, EarlyView.
ABSTRACT Unlike the dominant Australian savanna‐sclerophyll vegetation, tropical rainforests do not burn easily. Any evidence of fire in Australian rainforests therefore invites explanations of its source. Analysis of 187 radiocarbon dates that include selected charcoal fragments from 23 soil pits and 7 archaeological sites from the Wet Tropics ...
Richard Cosgrove, Åsa Ferrier, Fleur King, Laurance May, Simon Haberle, Ernie Raymont, Corrine Barlow, Judith Field, Patrick Moss, Ron Stager   +9 more
wiley   +1 more source

Surface ozone depletion episodes in the Arctic and Antarctic from historical ozonesonde records [PDF]

Atmospheric Chemistry and Physics, 2002
Episodes of ozone depletion in the lowermost Arctic atmosphere (0--2 km) at polar sunrise have been intensively studied at Alert, Canada, and are thought to result from catalytic reactions involving bromine.
D. W. Tarasick, J. W. Bottenheim
doaj  

Bioelectrochemical treatment of oil sands process‐affected water: A comparative study

The Canadian Journal of Chemical Engineering, EarlyView.
Comparative Efficiency of microbial fuel cell, microbial electrolysis cell, and microbial electrosynthesis cell systems for oil sands process‐affected water treatment. Abstract In this study, removal of dissolved organic carbon and naphthenic acids (NAs) from oil sands process‐affected water (OSPW) was evaluated in flow‐through microbial fuel cell (MFC)
Louis‐B. Jugnia, Dominic Manno, Jie Sui, Xiaomeng Wang, Boris Tartakovsky   +4 more
wiley   +1 more source

Artificial sweeteners in a large Canadian river reflect human consumption in the watershed. [PDF]

PLoS ONE, 2013
Artificial sweeteners have been widely incorporated in human food products for aid in weight loss regimes, dental health protection and dietary control of diabetes.
John Spoelstra, Sherry L Schiff, Susan J Brown   +2 more
doaj   +1 more source