Search Results - "Longstaffe, Fred"

Sources and sinks of microplastics in Canadian Lake Ontario nearshore, tributary and beach sediments by Ballent, Anika, Corcoran, Patricia L., Madden, Odile, Helm, Paul A., Longstaffe, Fred J.

“…Microplastics contamination of Lake Ontario sediments is investigated with the aim of identifying distribution patterns and hotspots in nearshore, tributary…”
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Carbon and nitrogen isotopic survey of northern peruvian plants: baselines for paleodietary and paleoecological studies by Szpak, Paul, White, Christine D, Longstaffe, Fred J, Millaire, Jean-François, Vásquez Sánchez, Víctor F

“…The development of isotopic baselines for comparison with paleodietary data is crucial, but often overlooked. We review the factors affecting the carbon…”
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Nitrogen isotopes suggest a change in nitrogen dynamics between the Late Pleistocene and modern time in Yukon, Canada by Tahmasebi, Farnoush, Longstaffe, Fred J, Zazula, Grant

“…A magnificent repository of Late Pleistocene terrestrial megafauna fossils is contained in ice-rich loess deposits of Alaska and Yukon, collectively eastern…”
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17O-excess of grass leaf phytoliths across the North American prairies records late-growing season daytime relative humidity by Guo, Minger, Alexandre, Anne, Longstaffe, Fred J., Peugeot, Christophe, Webb, Elizabeth A.

“…Because it is an important climate parameter, an accurate proxy is required for the reconstruction of past Relative Humidity (RH). Triple oxygen isotopes of…”
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Petrogenesis and Geodynamic Evolution of the Archean Shawmere Anorthosite Complex and Associated Gneisses, Kapuskasing Uplift, Superior Province, Canada by Polat, Ali, Frei, Robert, Deng, Hao, Longstaffe, Fred J, Sotiriou, Paul

“…Abstract In this study, we integrated extensive field, petrographic, whole-rock major and trace element, and Nd–Pb–Sr–O isotope, and zircon U–Pb ages, trace…”
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Nitrogen and carbon isotopic dynamics of subarctic soils and plants in southern Yukon Territory and its implications for paleoecological and paleodietary studies by Tahmasebi, Farnoush, Longstaffe, Fred J, Zazula, Grant, Bennett, Bruce

“…We examine here the carbon and nitrogen isotopic compositions of bulk soils (8 topsoil and 7 subsoils, including two soil profiles) and five different plant…”
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Relating wing morphology and immune function to patterns of partial and differential bat migration using stable isotopes by Rogers, Elizabeth J., McGuire, Liam, Longstaffe, Fred J., Clerc, Jeff, Kunkel, Emma, Fraser, Erin

“…Migration is energetically expensive and is predicted to drive similar morphological adaptations and physiological trade‐offs in migratory bats and birds…”
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Variation in stable carbon (δ13C) and nitrogen (δ15N) isotope compositions along antlers of Qamanirjuaq caribou (Rangifer tarandus groenlandicus) by Brenning, Matthew, Longstaffe, Fred J., Fraser, Danielle

“…Annual antler growth begins in the spring and is completed by late summer for male caribou (Rangifer tarandus groenlandicus) from the Qamanirjuaq herd…”
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Influence of seabird guano and camelid dung fertilization on the nitrogen isotopic composition of field-grown maize (Zea mays) by Szpak, Paul, Millaire, Jean-François, White, Christine D., Longstaffe, Fred J.

“…Organic fertilizers have the capacity to alter the nitrogen isotopic composition of plants. Camelid dung and seabird guano are two potentially important…”
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Stable isotope biogeochemistry of seabird guano fertilization: results from growth chamber studies with maize (Zea mays) by Szpak, Paul, Longstaffe, Fred J, Millaire, Jean-François, White, Christine D

“…Stable isotope analysis is being utilized with increasing regularity to examine a wide range of issues (diet, habitat use, migration) in ecology, geology,…”
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Petrogenetic and geodynamic origin of the Neoarchean Doré Lake Complex, Abitibi subprovince, Superior Province, Canada by Polat, Ali, Frei, Robert, Longstaffe, Fred J., Woods, Ryan

“…The Neoarchean (ca. 2728 Ma) anorthosite-bearing Doré Lake Complex in the northeastern Abitibi subprovince, Quebec, was emplaced into an association of…”
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Dose-Response Oxidation of Ingested Phytoglycogen during Exercise in Endurance-Trained Men by Bandegan, Arash, Huang, Li, Longstaffe, Fred J, Lemon, Peter Wr

“…Phytoglycogen (PHY; PhytoSpherix; Mirexus Biotechnologies), a highly branched polysaccharide extracted from sweet corn, has considerable potential for exercise…”
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Giant beaver palaeoecology inferred from stable isotopes by Plint, Tessa, Longstaffe, Fred J., Zazula, Grant

“…This is a multi-individual (n = 11), stable carbon and nitrogen isotope study of bone collagen ( δ 13 C col and δ 15 N col ) from the giant beaver (genus…”
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Abiogenic hydrocarbon isotopic signatures in granitic rocks: Identifying pathways of formation by Potter, Joanna, Salvi, Stefano, Longstaffe, Fred J.

“…The stability and isotopic composition of hydrocarbons formed in the mantle are controversial subjects. Knowing the range in isotopic compositions of…”
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Solving the woolly mammoth conundrum: amino acid 15N-enrichment suggests a distinct forage or habitat by Schwartz-Narbonne, Rachel, Longstaffe, Fred J., Metcalfe, Jessica Z., Zazula, Grant

“…Understanding woolly mammoth ecology is key to understanding Pleistocene community dynamics and evaluating the roles of human hunting and climate change in…”
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Investigating inherent differences in isotopic composition between human bone and enamel bioapatite: implications for reconstructing residential histories by Webb, Emily C., White, Christine D., Longstaffe, Fred J.

“…In archaeological research, human bone and enamel bioapatite isotopic compositions are commonly used to reconstruct residential and dietary histories. In doing…”
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A juvenile oceanic island arc origin for the Archean (ca. 2.97 Ga) Fiskenæsset anorthosite complex, southwestern Greenland: Evidence from oxygen isotopes by Polat, Ali, Longstaffe, Fred J.

“…The Archean (ca. 2.97 Ga) Fiskenæsset layered intrusion, southwestern Greenland, consists of an association of anorthosite, leucogabbro, gabbro, hornblendite,…”
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Oxygen-isotope variations in post-glacial Lake Ontario by Hladyniuk, Ryan, Longstaffe, Fred J.

“…The role of glacial meltwater input to the Atlantic Ocean in triggering the Younger Dryas (YD) cooling event has been the subject of controversy in recent…”
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Evolution of woodcutting behaviour in Early Pliocene beaver driven by consumption of woody plants by Plint, Tessa, Longstaffe, Fred J., Ballantyne, Ashley, Telka, Alice, Rybczynski, Natalia

“…Modern beavers ( Castor ) are prolific ecosystem engineers and dramatically alter the landscape through tree harvesting and dam building. Little is known,…”
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Intraskeletal isotopic compositions (δ13C, δ15N) of bone collagen: Nonpathological and pathological variation by Olsen, Karyn C., White, Christine D., Longstaffe, Fred J., von Heyking, Kristin, McGlynn, George, Grupe, Gisela, Rühli, Frank J.

“…ABSTRACT Paleodiet research traditionally interprets differences in collagen isotopic compositions (δ13C, δ15N) as indicators of dietary distinction even…”
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