Results 21 to 30 of about 5,020 (178)

Defining the “Ice Shed” of the Arctic Ocean's Last Ice Area and Its Future Evolution

Earth's Future, 2021
Sea ice will persist longer in the Last Ice Area (LIA), north of Canada and Greenland, than elsewhere in the Arctic. We combine earth system model ensembles with a sea‐ice tracking utility (SITU) to explore sources of sea ice (the “ice shed”) to the LIA ...
Robert Newton, Stephanie Pfirman, L. Bruno Tremblay, Patricia DeRepentigny   +3 more
doaj   +1 more source

Self-Rated Health, Life Balance and Feeling of Empowerment When Facing Impacts of Permafrost Thaw—A Case Study from Northern Canada

Atmosphere, 2022
Climate warming in Arctic Canada, e.g., permafrost thaw, comprehensively impacts biota and the environment, which then affects the lives of people. This study aimed to investigate which perceived environmental and adaptation factors relate to self-rated ...
Ulla Timlin, Justine Ramage, Susanna Gartler, Tanja Nordström, Arja Rautio   +4 more
doaj   +1 more source

Morphological, physiological, and transcriptional responses of the freshwater diatom Fragilaria crotonensis to elevated pH conditions

Frontiers in Microbiology, 2022
Harmful algal blooms (HABs) caused by the toxin-producing cyanobacteria Microcystis spp., can increase water column pH. While the effect(s) of these basified conditions on the bloom formers are a high research priority, how these pH shifts affect other ...
Brittany N. Zepernick, David J. Niknejad, Gwendolyn F. Stark, Alexander R. Truchon, Robbie M. Martin, Karen L. Rossignol, Hans W. Paerl, Steven W. Wilhelm   +7 more
doaj   +1 more source

A comparison of mercury biomagnification through lacustrine food webs supporting Brook Trout (Salvelinus fontinalis) and other salmonid fishes

Frontiers in Environmental Science, 2016
Methyl mercury (MeHg) bioaccumulation in lower-trophic-level organisms and its subsequent biomagnification through food webs differs in magnitude among lakes and results in intraspecific variability of MeHg in top predator fishes.
Monica LD Finley, Karen A Kidd, R Allen Curry, Gretchen L Lescord, Meredith G Clayden, Nelson J O'Driscoll   +5 more
doaj   +1 more source

Forest soil biotic communities show few responses to wood ash applications at multiple sites across Canada

Scientific Reports, 2022
There is interest in utilizing wood ash as an amendment in forestry operations as a mechanism to return nutrients to soils that are removed during harvesting, with the added benefit of diverting this bioenergy waste material from landfill sites. Existing
Emily Smenderovac, Caroline Emilson, Teresita Porter, Dave Morris, Paul Hazlett, Amanda Diochon, Nathan Basiliko, Nicolas Bélanger, John Markham, P. Michael Rutherford, Ken van Rees, Trevor Jones, Lisa Venier   +12 more
doaj   +1 more source

Late Pleistocene coral-reef development on Isla Coronados, Gulf of California

Ciencias Marinas, 2007
Un extenso afloramiento de un arrecife identificado como Porites panamensis se presenta en sección transversal sobre las laderas de la Cañada Coronados en la parte sur de Isla Coronados en el Golfo de California, cercana a Loreto, Baja California Sur ...
M E Johnson, R A Lopez-Perez, C R Ransom, J Ledesma-Vazquez   +3 more
doaj   +1 more source

Complementary responses of stream fish and benthic macroinvertebrate assemblages to environmental drivers in a shale-gas development area

FACETS, 2020
Shale-gas production could impact freshwater quality through contamination of the physical and chemical habitat (e.g., fracturing fluids, untreated or treated effluent) or development-related impacts.
Jennifer Lento, Michelle A. Gray, Allison J. Ferguson, R. Allen Curry   +3 more
doaj   +1 more source

Sources of particulate matter components in the Athabasca oil sands region: investigation through a comparison of trace element measurement methodologies [PDF]

Atmospheric Chemistry and Physics, 2017
The province of Alberta, Canada, is home to three oil sands regions which, combined, contain the third largest deposit of oil in the world. Of these, the Athabasca oil sands region is the largest.
C. Phillips-Smith, C.-H. Jeong, R. M. Healy, E. Dabek-Zlotorzynska, V. Celo, J. R. Brook, G. Evans   +6 more
doaj   +1 more source

Paleobotanical proxies for early Eocene climates and ecosystems in northern North America from middle to high latitudes [PDF]

Climate of the Past, 2020
Early Eocene climates were globally warm, with ice-free conditions at both poles. Early Eocene polar landmasses supported extensive forest ecosystems of a primarily temperate biota but also with abundant thermophilic elements, such as crocodilians, and ...
C. K. West, D. R. Greenwood, T. Reichgelt, A. J. Lowe, J. M. Vachon, J. F. Basinger   +5 more
doaj   +1 more source

Phosphorus forms by depth in sediments from the Qu’Appelle lakes, Saskatchewan, Canada

Frontiers in Environmental Science, 2022
Understanding sediment phosphorus (P) compounds is essential to managing P in lake sediments because P speciation will determine bioavailability and reactivity. Little is known about organic P (Po) in hardwater eutrophic lakes in the North American Great
Michelle S. Wauchope-Thompson, Michelle S. Wauchope-Thompson, Barbara J. Cade-Menun, Helen M. Baulch, Helen M. Baulch   +4 more
doaj   +1 more source