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DigitalCommons@USU
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Identification of the factors limiting inland salmonid populations, such as those of the threatened bull trout Salvelinus confluentus in the Pacific Northwest, can be particularly challenging due to substantial gaps in our understanding of...
2008-01-01
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Relatively little is known about soil organic carbon (SOC) dynamics in montane ecosystems of the semi-arid western U.S. or the stability of current SOC pools under future climate change scenarios. We measured the distribution and quality of SOC in...
2005-01-01
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Many of the streams and rivers in the Minnesota River Basin show high levels of turbidity, which impairs the ecosystem of the river, as well as the Mississippi River and Lake Pepin. Considerable research flows into understanding the sources and...
2009-01-01
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The velocity reversal hypothesis is commonly cited as a mechanism for the maintenance of pool-riffle morphology. Although this hypothesis is based on the magnitude of mean flow parameters, recent studies have suggested that mean parameters are not...
2006-01-01
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Between 26 April and 2 May 1992, students in a utah state university aquatic ecology class visited Lake Powell to do a study of trophic gradients of the reservoir. The main axis of the reservoir was surveyed, as well as less detailed analyses of...
1992-01-01
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We examined the effect of large (potentially piscivorous) lake trout (Salvelinus namaycush) on the dietary habits of small lake trout in an arctic lake. We hypothesized that large lake trout constrain the foraging of small lake trout, thus, in the...
2007-01-01
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Given the variable effects of Myxobolus cerebralis (the parasite that causes whirling disease) on trout populations in different streams across the intermountain West, it is important to understand the role of environmental variation in...
2004-01-01
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The objective was to investigate differences in soil properties in high-elevation tree islands composed of subalpine fir [Abies lasiocarpa (Hook.) Nutt.] and Engelmann spruce [Picea engelmannii Parry ex Engelm.] relative to semiarid meadows in...
2000-01-01
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Snake River sockeye salmon Oncorhynchus nerka, listed under U.S. law as endangered in 1991 in response to a decline in anadromous adult numbers, spend their first 1–2 years in Redfish Lake, Idaho, before migrating to the sea. To determine how...
1998-01-01
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The predaceous copepod Heterocope septentrionalis and a prey species Daphnia middendorffiana commonly coexist in shallow arctic ponds. Ponds that lack this association are often inhabited by Daphnia pulex. Data are presented showing that...
1988-01-01
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