Open Access. Powered by Scholars. Published by Universities.®
- Discipline
- Keyword
-
- Great Salt Lake (2)
- Biological assessment of freshwater ecosystems (1)
- Biological assessments (1)
- Biological indices (1)
- Clean Water Act (1)
-
- Concervation (1)
- Controls (1)
- Cyanobacteria (1)
- Earth's Surface (1)
- Ecological condition (1)
- Ecological integrity (1)
- Ecological modeling (1)
- Ecology (1)
- Eutrophication (1)
- Expert systems (1)
- Fish assemblages (1)
- Freshwater ecosystems (1)
- Geochemistry (1)
- Geomorphology (1)
- Habitat alteration (1)
- Harmonization (1)
- Hydrogen sulfide (1)
- Hydrology (1)
- Hypereutrophication (1)
- Indicators of biological integrity (1)
- Maintaining (1)
- Management (1)
- Methodology for model sharing (1)
- Model evaluation (1)
- Modeling (1)
Articles 1 - 9 of 9
Full-Text Articles in Entire DC Network
Eutrophication In Farmington Bay, Great Salt Lake, Utah 2005 Annual Report, Wayne A. Wurtsbaugh, Amy M. Marcarelli
Eutrophication In Farmington Bay, Great Salt Lake, Utah 2005 Annual Report, Wayne A. Wurtsbaugh, Amy M. Marcarelli
Watershed Sciences Faculty Publications
No abstract provided.
Toward A Unified Science Of The Earth's Surface: Opportunities For Synthesis Among Hydrology, Geomorphology, Geochemistry, And Ecology, C. E. Foufoula-Georgiou, W. E. Dietrich, M. Hondzo, D. Mohrig, G. Parker, M. E. Power, I. Rodriguez-Iturbe, V. Voller, P. Wilcock
Toward A Unified Science Of The Earth's Surface: Opportunities For Synthesis Among Hydrology, Geomorphology, Geochemistry, And Ecology, C. E. Foufoula-Georgiou, W. E. Dietrich, M. Hondzo, D. Mohrig, G. Parker, M. E. Power, I. Rodriguez-Iturbe, V. Voller, P. Wilcock
Watershed Sciences Faculty Publications
The Earth's surface is shaped by the interaction of tectonics, water, sediment, solutes, and biota over a wide range of spatial and temporal scales and across diverse environments. Development of a predictive science of Earth surface dynamics integrates many disciplines and approaches, including hydrology, geomorphology, ocean and atmospheric science, sedimentary and structural geology, geochemistry, and ecology. This paper discusses challenges, opportunities, and a few example problems that can serve as pathways toward this integration.
Setting Expectations For The Ecological Condition Of Running Waters: The Concept Of Reference Condition, J. L. Stoddard, P. Larsen, Charles P. Hawkins, R. K. Johnson, R. H. Norris
Setting Expectations For The Ecological Condition Of Running Waters: The Concept Of Reference Condition, J. L. Stoddard, P. Larsen, Charles P. Hawkins, R. K. Johnson, R. H. Norris
Watershed Sciences Faculty Publications
An important component of the biological assessment of stream condition is an evaluation of the direct or indirect effects of human activities or disturbances. The concept of a “reference condition” is increasingly used to describe the standard or benchmark against which current condition is compared. Many individual nations, and the European Union as a whole, have codified the concept of reference condition in legislation aimed at protecting and improving the ecological condition of streams. However, the phrase “reference condition” has many meanings in a variety of contexts. One of the primary purposes of this paper is to bring some consistency …
Spatial Analyses Of Trophic Linkages Between Basins In The Great Salt Lake, Wayne A. Wurtsbaugh, David Naftz, Shane Bradt
Spatial Analyses Of Trophic Linkages Between Basins In The Great Salt Lake, Wayne A. Wurtsbaugh, David Naftz, Shane Bradt
Watershed Sciences Faculty Publications
Although the Great Salt Lake is frequently treated as if it were a single body of water, the natural bays and transportation causeways have divided it into a system of four bays. The bays, however, do not function independently because water, nutrients and other contaminants flow between them. The purpose of our study was to analyze the water quality in three of the bays (Farmington, Bear River and Gilbert), to determine fluxes of nutrients between them, and to determine how this was influencing brine shrimp populations in the lake. Discharge and nutrient concentrations were measured at constrictions separating the three …
Salinity Controls Phytoplankton Response To Nutrient Enrichment In The Great Salt Lake, Utah, Usa, Amy M. Marcarelli, Wayne A. Wurtsbaugh, O. Griset
Salinity Controls Phytoplankton Response To Nutrient Enrichment In The Great Salt Lake, Utah, Usa, Amy M. Marcarelli, Wayne A. Wurtsbaugh, O. Griset
Watershed Sciences Faculty Publications
To examine how salinity and nutrient supply interact to control phytoplankton community composition, nutrient limitation, and dinitrogen (N2) fixation rates in the Great Salt Lake (Utah, USA), we conducted a series of bioassay experiments with plankton from both Gilbert Bay, where salinities are near 160 g·L–1, and Farmington Bay, where salinities range from 10 to 90 g·L–1. Six-day nutrient addition bioassay experiments showed that the extant phyto plankton communities in both bays were limited by nitrogen (N). However, in 28- to 30-day factorial bioassay experiments in which both salinities and nutrient supply were manipulated, phosphorus stimulated chlorophyll a as much …
Good Practices For Sharing Ecological Models, Karin M. Kettenring, Barbara T. Martinez, Anthony M. Starfield, Wayne M. Getz
Good Practices For Sharing Ecological Models, Karin M. Kettenring, Barbara T. Martinez, Anthony M. Starfield, Wayne M. Getz
Watershed Sciences Faculty Publications
As the fields of ecology and conservation biology increasingly rely on models to address pertinent questions, there has been greater sharing of models among scientists. However, many models lack comprehensive documentation, especially in a format that is easy to use and to understand. Also, modelers lack a framework they can use when evaluating a model for its potential use. Here we outline how ecologists and conservation biologists can begin to establish a culture of good practice for model sharing. We offer suggestions on how model developers, model users, user communities, and journal editors can contribute to the appropriate sharing of …
Maintaining And Restoring The Ecological Integrity Of Freshwater Ecosystems: Improving Management By Refining Biological Assessments, Charles P. Hawkins
Maintaining And Restoring The Ecological Integrity Of Freshwater Ecosystems: Improving Management By Refining Biological Assessments, Charles P. Hawkins
Watershed Sciences Faculty Publications
No abstract provided.
Quantifying Biological Integrity By Taxonomic Completeness: Evaluation Of A Potential Indicator For Use In Regional-And Global-Scale Assessments, Charles P. Hawkins
Quantifying Biological Integrity By Taxonomic Completeness: Evaluation Of A Potential Indicator For Use In Regional-And Global-Scale Assessments, Charles P. Hawkins
Watershed Sciences Faculty Publications
Water resources managers and conservation biologists need reliable, quantitative, and directly comparable methods for assessing the biological integrity of the world's aquatic ecosystems. Large-scale assessments are constrained by the lack of consistency in the indicators used to assess biological integrity and our current inability to translate between indicators. In theory, assessments based on estimates of taxonomic completeness, i.e., the proportion of expected taxa that were observed (observed/expected, O/E) are directly comparable to one another and should therefore allow regionally and globally consistent summaries of the biological integrity of freshwater ecosystems. However, we know little about the true comparability of O/E …
Use Of Predictive Models To Attribute Potential Effects Of Mixture Toxicity And Habitat Alteration On The Biological Condition Of Fish Assemblages, D. De Zwart, S. D. Dyer, L. Posthuma, Charles P. Hawkins
Use Of Predictive Models To Attribute Potential Effects Of Mixture Toxicity And Habitat Alteration On The Biological Condition Of Fish Assemblages, D. De Zwart, S. D. Dyer, L. Posthuma, Charles P. Hawkins
Watershed Sciences Faculty Publications
No abstract provided.