Utilization of algal assays to assess the effects of municipal, industrial, and agricultural wastewater effluents upon phytoplankton production in the Snake River system

1975 ◽  
Vol 4 (3-4) ◽  
pp. 415-434 ◽  
Author(s):  
Joseph C. Greene ◽  
William E. Miller ◽  
Tamotsu Shiroyama ◽  
Thomas E. Maloney
Keyword(s):  
River System ◽  
Snake River ◽  
Phytoplankton Production ◽  
Agricultural Wastewater ◽  
Algal Assays ◽  
Wastewater Effluents

scholarly journals Measuring the Morphology and Dynamics of the Snake River by Remote Sensing

2011 ◽  
Vol 33 ◽  
pp. 3-15
Author(s):  
Carl Legleiter
Keyword(s):  
Remote Sensing ◽  
Image Data ◽  
River System ◽  
Field Work ◽  
Hyperspectral Data ◽  
Snake River ◽  
Central Component ◽  
Data Sets ◽  
Channel Form ◽  
And Behavior

The Snake River is a central component of Grand Teton National Park, and this dynamic fluvial system plays a key role in shaping the landscape and creating diverse aquatic and terrestrial habitat. The river’s complexity and propensity for change make effective characterization of this resource difficult, however, and conventional, ground-based methods are simply inadequate. Remote sensing provides an appealing alternative approach that could facilitate resource management while providing novel insight on the factors controlling channel form and behavior. In this study, we evaluate the potential to measure the morphology and dynamics of a large, complex river system such as the Snake using optical image data. Initially, we made use of existing, publicly available images and basic digital aerial photography acquired in August 2010. Analysis to date has focused on estimating flow depths from these data, and preliminary results indicate that remote bathymetric mapping is feasible but not highly accurate, with important constraints related to the limited radiometric resolution of these data sets. Additional, more sophisticated hyperspectral data are scheduled for collection in 2011, along with further field work.

Use of Stable Isotopes to Trace Municipal Wastewater Effluents into Food Webs within a Highly Developed River System

2014 ◽  
Vol 31 (9) ◽  
pp. 1093-1100 ◽  
Author(s):  
H. A. Loomer ◽  
K. D. Oakes ◽  
S. L. Schiff ◽  
W. D. Taylor ◽  
M. R. Servos
Keyword(s):  
Stable Isotopes ◽  
Food Webs ◽  
Municipal Wastewater ◽  
River System ◽  
Wastewater Effluents

scholarly journals Asian copepods on the move: recent invasions in the Columbia–Snake River system, USA

2008 ◽  
Vol 65 (5) ◽  
pp. 753-758 ◽  
Author(s):  
Jeffery R. Cordell ◽  
Stephen M. Bollens ◽  
Robyn Draheim ◽  
Mark Sytsma
Keyword(s):  
San Francisco ◽  
Native Species ◽  
Calanoid Copepod ◽  
Puget Sound ◽  
Columbia River ◽  
Late Summer ◽  
River System ◽  
Washington State ◽  
Cyclopoid Copepod ◽  
Snake River

Abstract Cordell, J. R., Bollens, S. M., Draheim, R., and Sytsma, M. 2008. Asian copepods on the move: recent invasions in the Columbia–Snake River system, USA. – ICES Journal of Marine Science, 65: 753–758. Nine Asian copepod species have been introduced into the Northeast Pacific, seven of which are largely confined to the San Francisco estuary. However, several of these copepods recently invaded the Columbia–Snake River system in Washington state, USA. In addition to the calanoid copepod Pseudodiaptomus inopinus, which appeared in the 1980s, the Columbia River now has populations of the calanoids Pseudodiaptomus forbesi and Sinocalanus doerrii, and the cyclopoid copepod Limnoithona tetraspina. Sampling in the Columbia–Snake River system in 2005 and 2006 indicated that (i) newer invaders may have displaced the previously introduced P. inopinus; (ii) P. forbesi had moved upstream into the first five reservoirs in the system; (iii) the other species occurred only in the tidal regions of the lower river; (iv) P. forbesi dominates the late summer holoplankton in the lower river and estuary; and (v) P. forbesi is relatively rare, and the holoplankton is dominated by native species in upstream free-flowing segments of the Columbia River and in reservoirs of the Snake River. Zooplankton samples from ships in Puget Sound suggest that ballast water from California is a major source of the introduced copepods and that the Columbia River itself may be a new source of ballast-introduced copepods.

A multiple-reach model describing the migratory behavior of Snake River yearling chinook salmon (Oncorhynchus tshawytscha)

1998 ◽  
Vol 55 (3) ◽  
pp. 658-667 ◽  
Author(s):  
Richard W Zabel ◽  
James J Anderson ◽  
Pamela A Shaw
Keyword(s):  
Chinook Salmon ◽  
Migration Rate ◽  
River Flow ◽  
Oncorhynchus Tshawytscha ◽  
Nonlinear Models ◽  
Columbia River ◽  
River System ◽  
Snake River ◽  
Migration Route ◽  
Time Step

A multiple-reach model was developed to describe the downstream migration of juvenile salmonids in the Columbia River system. Migration rate for cohorts of fish was allowed to vary by reach and time step. A nested sequence of linear and nonlinear models related the variation in migration rates to river flow, date in season, and experience in the river. By comparing predicted with observed travel times at multiple observation sites along the migration route, the relative performance of the migration rate models was assessed. The analysis was applied to cohorts of yearling chinook salmon (Oncorhynchus tshawytscha) captured at the Snake River Trap near Lewiston, Idaho, and fitted with passive integrated transponder (PIT) tags over the 8-year period 1989-1996. The fish were observed at Lower Granite and Little Goose dams on the Snake River and McNary Dam on the Columbia River covering a migration distance of 277 km. The data supported a model containing two behavioral components: a flow term related to season where fish spend more time in regions of higher river velocity later in the season and a flow-independent experience effect where the fish migrate faster the longer they have been in the river.

scholarly journals The postmonsoon carbon biogeochemistry of estuaries under different levels of anthropogenic impacts

2018 ◽  
Author(s):  
Manab Kumar Dutta ◽  
Sanjeev Kumar ◽  
Rupa Mukherjee ◽  
Prasun Sanyal ◽  
Sandip Mukhopadhyay
Keyword(s):  
Anthropogenic Impacts ◽  
River System ◽  
Phytoplankton Production ◽  
Estuarine System ◽  
Phytoplankton Productivity ◽  
Run Off ◽  
Carbon Biogeochemistry ◽  
Different Levels ◽  
The Sundarbans

Abstract. The different aspects of carbon biogeochemistry were studied during the postmonsoon at the Hooghly-Sundarbans estuarine system, a part of the Ganga-Brahmaputra river system located in the northeastern India. The study focused on understanding the differences in carbon biogeochemistry of estuaries undergoing different levels of anthropogenic stress by investigating anthropogenically influenced Hooghly estuary and mangrove-dominated estuaries of the Sundarbans. The salinity of well oxygenated (%DO: 91–104 %) estuaries of the Sundarbans varied over a narrow range (12.74–16.69) during postmonsoon relative to the Hooghly (0.04–10.37). Phytoplankton productivity and carbonate precipitation and/or dissolution were dominant processes controlling DIC dynamics in different parts of the Hooghly, whereas signal for mangrove derived DIC removal was observed in the Sundarbans. Influence of groundwater on estuarine DIC biogeochemistry was also observed in both the estuaries with relatively higher influence at the Hooghly than Sundarbans. In both estuarine systems, DOC behaved non-conservatively with ~ 40 % higher DOC level in the Hooghly compared to the Sundarbans. No significant evidence of phytoplankton production on DOC level was found in these estuaries, however signal of DOC input through pore-water exchange at the Sundarbans was observed. Relatively lower δ13CPOC at the Hooghly compared to the Sundarbans suggest relatively higher terrestrial influence at the Hooghly with a possibility of in situ biogeochemical modifications of POC at the Sundarbans. The freshwater run-off coupled with in situ aerobic OC mineralization controlled estuarine pCO2 level at the Hooghly, whereas the same was principally exogenous for the Sundarbans. The entire Hooghly-Sundarbans system acted as source of CO2 to the regional atmosphere with ~ 17 times higher emission from the Hooghly compared to Sundarbans. The present study clearly establishes the dominance of anthropogenically influenced estuary over relatively pristine mangrove dominated one in the regional greenhouse gas budget and climate change perspective.

scholarly journals Collaborations with Tribal Elders for Sustainability Education

2015 ◽  
Vol 2 (2) ◽  
Author(s):  
Richard D. Scheuerman ◽  
Kristine Gritter ◽  
Carrie Jim Schuster
Keyword(s):  
Indigenous Peoples ◽  
Environmental Sustainability ◽  
Science Curriculum ◽  
River System ◽  
Secondary Level ◽  
Snake River ◽  
School Of Education ◽  
The Pacific ◽  
Regional Partnerships ◽  
Collaborative Efforts

Environmental sustainability studies are enhanced through local and regional partnerships between academicians and curriculum developers with members of area First Nation communities who have lived sustainably since time immemorial. Recent collaborative efforts between Seattle Pacific University’s School of Education and Snake River-Palouse tribal elder Carrie Jim Schuster have led to the development of a one semester, secondary level integrated history, geography, literature, and science curriculum investigating the indigenous peoples and environment of the Pacific Northwest’s Columbia-Snake River system. Seven core principles of cultural and environmental sustainability are discussed that were formulated through this collaboration involving Northwest tribal elders.

The Ecology of Juvenile Salmon in the Northeast Pacific Ocean: Regional Comparisons

2007 ◽  
Keyword(s):  
Continental Shelf ◽  
Coho Salmon ◽  
River System ◽  
Gulf Of Alaska ◽  
Juvenile Salmon ◽  
Snake River ◽  
Southeast Alaska ◽  
The North ◽  
Risk Of Mortality ◽  
Almost All

Abstract.—A conceptual model of juvenile coho salmon <em>Oncorhynchus kisutch </em>migration from Oregon, Washington, the Columbia–Snake River system, British Columbia, and southeast Alaska was derived using coded-wire-tag data from juvenile salmon surveys conducted between 1995 and 2004. Over this 10-year period, 914 coded-wire-tagged (CWT) juvenile coho salmon were recovered. In general, the migratory behavior of juvenile coho salmon observed in this study was consistent with previous studies showing that juvenile salmon generally undertake a northward migration and utilize the continental shelf as a migration highway. However, this study also revealed that both regional and specific river stocks of coho salmon from all parts of the North American coast are composed of fast components that take a rapid and direct migration in the summer to as far west as Kodiak Island, Alaska and slow components that migrate over a relatively short distance from their natal rivers and reside over winter on the shelf. The Columbia–Snake River system, coastal Oregon, and coastal Washington had the highest proportion of fast CWT migrants among regions. Furthermore, specific stocks within the lower Columbia River had the highest proportion of fast CWT migrants both within the Columbia–Snake River watershed and along the entire west coast of North America. Distances migrated along the shelf were positively correlated to size at capture during the summer for almost all regional stocks, indicating that fast-migrating juvenile coho salmon have faster growth rates. The widespread dispersion along the continental shelf as a consequence of a mix of slow and fast migrants and the subsequent offshore migration into different regions of the Gulf of Alaska may have been selected over evolutionary time scales. This strategy would have ensured the long-term survival of individual stocks by spreading the risk of mortality among oceanic regions.

scholarly journals Measuring the Morphology and Dynamics of the Snake River by Remote Sensing

2014 ◽  
Vol 37 ◽  
pp. 12-20
Author(s):  
Carl Legleiter ◽  
Brandon Overstreet
Keyword(s):  
Remote Sensing ◽  
Water Surface ◽  
Management Strategies ◽  
River System ◽  
Sediment Supply ◽  
Sediment Flux ◽  
Snake River ◽  
Central Feature ◽  
Flow Management ◽  
Extensive Field

The Snake River is a prominent, central feature of Grand Teton National Park, and this dynamic fluvial system maintains diverse habitats while actively shaping the landscape. Although the riparian corridor is relatively pristine, the Snake River is by no means free from anthropogenic influences: streamflows have been regulated since 1907 by Jackson Lake Dam. Among dam-controlled rivers in the western U.S., the Snake River is unique in that tributaries entering below the dam supply sufficient coarse bed material to produce a braided morphology. As a result of tributary inputs, sediment flux along the Snake River has been relatively unaffected by Jackson Lake Dam, but flow regulation has reduced the magnitude and altered the timing of streamflows. In this study we are coupling an annual image time series with extensive field surveys to document channel changes occurring on the Snake River. Our objective is to quantify how snowmelt runoff events and flow management strategies influence patterns of sediment transfer and storage throughout the river system, with a particular focus on tributary junctions. More specifically, we are using the image sequence to identify areas of erosion and deposition and hence infer the sediment flux associated with the observed changes in channel morphology. This analysis will improve our understanding of the river’s response to flow management and enable us to generate hypotheses as to how the system might adapt to future anthropogenic and/or climate-driven alterations in streamflow and sediment supply. In addition, our research on the Snake River involves an ongoing assessment of the potential to measure the morphology and dynamics of large, complex rivers via remote sensing. A new aspect of this investigation involves estimating flow velocities from hyperspectral images that capture the texture of the water surface. Extensive field measurements of velocity and water surface roughness are being used to develop this innovative approach and thus increase the amount of river information that can be inferred via remote sensing.

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