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Oceanography and Atmospheric Sciences and Meteorology
UNLV Theses, Dissertations, Professional Papers, and Capstones
- Keyword
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- Aquatic ecology (1)
- Aquatic habitats (1)
- Bioclimatology (1)
- Chinook salmon (Oncorhynchus tshawytscha) (1)
- Climatic changes (1)
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- Climatic factors (1)
- Columbia River (1)
- Cowlitz River (Wash.) (1)
- Duration (1)
- Fish populations (1)
- Henderson (1)
- Hydrology (1)
- Kalama River (Wash.) (1)
- Las Vegas Wash (1)
- Lewis River (Wash.) (1)
- Monson Channel (1)
- Nevada (1)
- Pacific salmon (1)
- Rhodamine WT (1)
- Spawning (1)
- Washington (1)
- Water residence time (1)
- Water travel (1)
- Wetlands Park Nature Preserve (1)
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Travel Time Study At The Wetlands Park National Preserve, Brandon Bair
Travel Time Study At The Wetlands Park National Preserve, Brandon Bair
UNLV Theses, Dissertations, Professional Papers, and Capstones
This thesis reports on a study of the residence time of water in the Wetlands Park Nature Preserve in Henderson, Nevada. Rhodamine WT was used in order to test for the travel time of the water from the Monson Channel inflow to the Nature Preserve outflow to the Las Vegas Wash. The initial hypothesis was that the water would stay in the system for approximately 8 days. Residence time was tested using an ISCO sampling machine along with a Sequoia-Turner model 450 fluorimeter to test for the fluoresce of the dye in the water. All samples collected were taken immediately …
Fluctuations In Chinook Salmon (Oncorhynchus Tshawytscha) Counts At Three Lower Columbia River Spawning Sites, Eric Michael Loomis
Fluctuations In Chinook Salmon (Oncorhynchus Tshawytscha) Counts At Three Lower Columbia River Spawning Sites, Eric Michael Loomis
UNLV Theses, Dissertations, Professional Papers, and Capstones
Several hypotheses were developed to explore the pronounced increase in Chinook salmon (Oncorhynchus tshawytscha) returning to spawning grounds at the Cowlitz, Kalama, and Lewis Rivers, three tributaries of the lower Columbia River. The study was conducted using data compiled over a ten-year span from 1991-2001. Preliminary indications are that trends in climate are linked to these increases, with the absence of El Niño events and fluctuations in winter precipitation as likely explanations of these phenomena. The unique nature of Chinook life cycles causes them to utilize a variety of habitats that require ideal conditions for maximum survival rates. Correlations between …