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DigitalCommons@USU
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Whitewater recreation is an aesthetic ecosystem service potentially affected by climate warming alterations to runoff. In California's Sierra Nevada, climate change is likely to reduce water availability with warmer air temperatures and stationary...
2011-01-01
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The influence of geomorphic change on ecohydraulics has traditionally been difficult to quantify. With recent improvements in surveying technology, high-resolution, repeat and topographic surveys have become a common tool for estimating fluvial...
2010-01-01
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We used scuba observations to determine summer habitat use and the effects of piers on the littoral-zone fish community in Lake Tahoe, California–Nevada. Habitat complexity declined with depth. Over 50% of the littoral zone less than 2 m deep was...
1994-01-01
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Control of lacustrine phytoplankton biomass by phosphorus is one of the oldest and most stable paradigms in modern limnology. Even so, evidence from bioassays conducted by multiple investigators at numerous sites over the last three decades shows...
2008-01-01
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The management and recovery of populations of bull trout Salvelinus confluentus requires a comprehensive understanding of habitat use across different systems, life stages, and life history forms. To address these needs, we collected microhabitat...
2007-01-01
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The objective of this field study was to test whether Ca and (or) Mg was deficient in two red spruce (Picearubens Sarg.) sites located at 1720 and 1950 m in elevation in the Great Smoky Mountains National Park near Clingmans Dome, North Carolina....
1993-01-01
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Soil carbon, perhaps as no other factor, influences soil. It affects plant relationships through its direct and indirect impacts on mineral solubility, exchange capacity, nutrient availability, moisture supply, aggregate formation, and soil...
1995-01-01
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The factors that directly and indirectly restrict the productivity of the world's lakes, streams, and oceans have been studied for decades, but no clear picture has emerged that explains when and why particular nutrients will limit algal growth....
1988-01-01
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Although most populations of lake trout Salvelinus namaycush spawn over rocky shoals, use of these substrates by lake trout has not yet been found in Lake Tahoe. Large cobble substrate exists at depths less than 20 m, and steep, fractured, rocky...
1992-01-01
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The Great Salt Lake has a salinity near 150 g/L and is habitat for over 200 species of migratory birds. The diet of many of these birds is dependent on the food web of carbonaceous biostromes (stromatolites) that cover 260 km(2) of the lake's...
2011-01-01
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In the Toolik Lake region of arctic Alaska, Heterocope septentrionalis occurs in two distinct color morphs, dark red and pale green. The dark form tends to occur in shallow fishless ponds and the pale form in large, deep lakes with fish....
1981-01-01
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For the past three years, an Aquatic Ecology Practicum class at Utah State University has conducted research examining the limnology of Farmington Bay. In 2000, our class discovered that Farmington Bay could be classified as hypereutrophic, and...
2003-05-01
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A field study was conducted in a high-elevation spruce–fir (Picea rubens Sarg. – Abies fraseri (Pursh.) Poir) forest in the Great Smoky Mountains National Park to assess the effect of temperature on soil C storage and dynamics. In eight plots...
2007-01-01
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We used dual-beam hydroacoustics and echo integration techniques, combined with midwater trawling and gillnetting, to assess the abundance and distribution of the endangered Snake River juvenile sockeye salmon and resident kokanee (both...
1997-01-01
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Altered sediment and flow regimes in regulated rivers limit available spawning habitat for many fishes, especially salmonids. Mitigation efforts include spawning habitat rehabilitation and dam‐removal, but often neglect conceptual or predictive...
2004-01-01
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"Phytoplankton production in lake ecosystems is frequently controlled by amounts of nitrogen and phosphorus (Smith 1982, Elser et al. 1990), as well as minor- and micro-nutrients (Wurtsbaugh & Horne 1983, Wurtsbaugh 1988, Lovstad & Bjorndalen...
1997-01-01
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