Results 31 to 40 of about 61,430 (223)

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

open access: yesScientific 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   +12 more
doaj   +1 more source

Butyltin compounds in a sediment core from the old Tilbury basin, London, UK [PDF]

open access: yes, 2005
Sections from a sediment core taken from the River Thames were analysed for butyltin species using gas chromatography with species-specific isotope dilution mass spectrometry.
Almeida   +52 more
core   +1 more source

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

open access: yesFrontiers 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   +5 more
doaj   +1 more source

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

open access: yesCiencias 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   +3 more
doaj   +1 more source

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

open access: yesFACETS, 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   +3 more
doaj   +1 more source

Notes on the Life Histories of \u3ci\u3eChlosyne\u3c/i\u3e (Lepidoptera: Nymphalidae) and \u3ci\u3eAgrypon\u3c/i\u3e (Hymenoptera: Ichneumonidae) [PDF]

open access: yes, 2017
Ambrosia trifida is reported for the first time as a larval food plant of Chlosyne nycteis. Chlosyne nycteis and C. harrisii are reported as hosts of Agrypon prismaticum and A.
Williams, Andrew H
core   +2 more sources

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

open access: yesAtmospheric 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   +6 more
doaj   +1 more source

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

open access: yesClimate 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   +5 more
doaj   +1 more source

Agronomic Management of Indigenous Mycorrhizas [PDF]

open access: yes, 2008
Many of the advantages conferred to plants by arbuscular mycorrhiza (AM) are associated to the ability of AM plants to explore a greater volume of soil through the extraradical mycelium.
A Gollotte   +190 more
core   +1 more source

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

open access: yesFrontiers 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   +4 more
doaj   +1 more source

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