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Full-Text Articles in Life Sciences

Separation Of Realized Ecological Niche Axes Among Sympatric Tilefishes Provides Insight Into Potential Drivers Of Co-Occurrence In The Nw Atlantic, Jill A. Olin, Oliver N. Shipley, Robert M. Cerrato, Paul Nitschke, Cédric Magen, Michael G. Frisk Oct 2020

Separation Of Realized Ecological Niche Axes Among Sympatric Tilefishes Provides Insight Into Potential Drivers Of Co-Occurrence In The Nw Atlantic, Jill A. Olin, Oliver N. Shipley, Robert M. Cerrato, Paul Nitschke, Cédric Magen, Michael G. Frisk

Michigan Tech Publications

Golden and Blueline Tilefish (Lopholatilus chamaeleonticeps and Caulolatilus microps) are keystone taxa in northwest (NW) Atlantic continental shelf-edge environments due to their biotic (trophic-mediated) and abiotic (ecosystem engineering) functional roles combined with high-value fisheries. Despite this importance, the ecological niche dynamics (i.e., those relating to trophic behavior and food-web interactions) of these sympatric species are poorly understood, knowledge of which may be consequential for maintaining both ecosystem function and fishery sustainability. We used stable isotope ratios of carbon (δ13C) and nitrogen (δ15N) to build realized ecological niche hypervolumes to serve as proxies for diet and production use patterns of L. …


Spatial Contrasts In Hepatic And Biliary Pahs In Tilefish (Lopholatilus Chamaeleonticeps) Throughout The Gulf Of Mexico, With Comparison To The Northwest Atlantic, Susan M. Snyder, Jill A. Olin, Erin L. Pulster, Steven A. Murawski Mar 2020

Spatial Contrasts In Hepatic And Biliary Pahs In Tilefish (Lopholatilus Chamaeleonticeps) Throughout The Gulf Of Mexico, With Comparison To The Northwest Atlantic, Susan M. Snyder, Jill A. Olin, Erin L. Pulster, Steven A. Murawski

Michigan Tech Publications

A multinational demersal longline survey was conducted on the Gulf of Mexico continental shelf over the years 2015 and 2016 to generate a Gulf-wide baseline of polycyclic aromatic hydrocarbon (PAH) concentrations in demersal fishes. Tilefish (Lopholatilus chamaeleonticeps) were sampled in all regions of the Gulf of Mexico for biometrics, bile, and liver. Tilefish liver was also obtained from surveys in the northwest Atlantic Ocean for comparison. Liver tissues (n ¼ 305) were analyzed for PAHs and select alkylated homologs using QuEChERS extractions and gas chromatography tandem mass spectrometry. Bile samples (n ¼ 225) were analyzed for biliary PAH metabolites using …


Scientists’ Warning To Humanity: Rapid Degradation Of The World's Large Lakes, Jean Philippe Jenny, Orlane Anneville, Fabien Arnaud, Yoann Baulaz, Damien Bouffard, Isabelle Domaizon, Serghei A. Bocaniov, Nathalie Chèvre, Maria Dittrich, Jean Marcel Dorioz, Erin S. Dunlop, Gaël Dur, Jean Guillard, Thibault Guinaldo, Stéphan Jacquet, Aurélien Jamoneau, Zobia Jawed, Erik Jeppesen, Gail Krantzberg, John Lenters, Barbara Leoni, Michel Meybeck, Nava, Tiina Nõges, Peeter Nõges, Martina Patelli, Victoria Pebbles, Marie-Elodie Perga, Serena Rasconia, Carl R. Ruetz Iii, Lars Rudstam, Nico Salmaso, Sharma Sapna, Dietmar Straile, Olga Tammeorg, Michael R. Twiss, Donald G. Uzarski, Anne-Mari Ventelä, Warwick F. Vincent, Steven W. Wilhelm, Sten-Åke Wängberg, Gesa A. Weyhenmeyer Jan 2020

Scientists’ Warning To Humanity: Rapid Degradation Of The World's Large Lakes, Jean Philippe Jenny, Orlane Anneville, Fabien Arnaud, Yoann Baulaz, Damien Bouffard, Isabelle Domaizon, Serghei A. Bocaniov, Nathalie Chèvre, Maria Dittrich, Jean Marcel Dorioz, Erin S. Dunlop, Gaël Dur, Jean Guillard, Thibault Guinaldo, Stéphan Jacquet, Aurélien Jamoneau, Zobia Jawed, Erik Jeppesen, Gail Krantzberg, John Lenters, Barbara Leoni, Michel Meybeck, Nava, Tiina Nõges, Peeter Nõges, Martina Patelli, Victoria Pebbles, Marie-Elodie Perga, Serena Rasconia, Carl R. Ruetz Iii, Lars Rudstam, Nico Salmaso, Sharma Sapna, Dietmar Straile, Olga Tammeorg, Michael R. Twiss, Donald G. Uzarski, Anne-Mari Ventelä, Warwick F. Vincent, Steven W. Wilhelm, Sten-Åke Wängberg, Gesa A. Weyhenmeyer

Michigan Tech Publications

Large lakes of the world are habitats for diverse species, including endemic taxa, and are valuable resources that provide humanity with many ecosystem services. They are also sentinels of global and local change, and recent studies in limnology and paleolimnology have demonstrated disturbing evidence of their collective degradation in terms of depletion of resources (water and food), rapid warming and loss of ice, destruction of habitats and ecosystems, loss of species, and accelerating pollution. Large lakes are particularly exposed to anthropogenic and climatic stressors. The Second Warning to Humanity provides a framework to assess the dangers now threatening the world's …


Copper-Rich “Halo” Off Lake Superior's Keweenaw Peninsula And How Mass Mill Tailings Dispersed Onto Tribal Lands, W. Charles Kerfoot, Noel Urban, Jaebong Jeong, Carol Maclennan, Sophia Ford Jan 2020

Copper-Rich “Halo” Off Lake Superior's Keweenaw Peninsula And How Mass Mill Tailings Dispersed Onto Tribal Lands, W. Charles Kerfoot, Noel Urban, Jaebong Jeong, Carol Maclennan, Sophia Ford

Michigan Tech Publications

Over a century ago, shoreline copper mills sluiced more than 64 million metric tonnes of tailings into Lake Superior, creating a “halo” around the Keweenaw Peninsula with a buried copper peak. Here we examine how tailings from one of the smaller mills (Mass Mill, 1902–1919) spread as a dual pulse across southern Keweenaw Bay and onto tribal L'Anse Indian Reservation lands. The fine (“slime clay”) fraction dispersed early and widely, whereas the coarse fraction (stamp sands) moved more slowly southward as a black sand beach deposit, leaving scattered residual patches. Beach stamp sands followed the path of sand eroding from …