Physical Sciences and Mathematics Commons^™

Atrazine Runoff In The Blue River Basin: Geomorphology, Rainfall, And Agronomic Practices, Kundan Dhakal

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Atrazine concentrations in the Big Blue River Basin (BRB) in Nebraska and Kansas periodically exceed the U.S. EPA Maximum Contaminant Level (MCL) of 3 µg L^-1. The present study is focused on watershed variables influencing surface runoff of atrazine. The assessment includes the impact of corn and sorghum planting progress (indicating atrazine application), rainfall, antecedent soil water content, and soil restrictive layer on stream-measured weekly atrazine load in independent BRB subwatersheds for 1997 - 2004. Maximum atrazine loading occurred after most of the corn had been planted but during sorghum planting from mid-May to early June, immediately following …

Chemical And Toxicological Characterization Of The Upper York River, Virginia The Mattaponi And Pamunkey Rivers, Morris H. Roberts Jr., Mark Richards, Peter F. Delisle

Reports

This study describes the most extensive effort to characterize the chemistry, toxicology and community of the sediments of the Mattaponi and Pamunkey Rivers. This was accomplished using a study design modified to expand the number of stations occupied by reducing the cost of analyses by compositing replicate samples collected from each study site rather than performing toxicity tests on these samples individually. In previous studies, the variability in field replicate samples was equivalent to the variability in laboratory replicates. This design has long been used to analyze samples for various chemical contaminants as a cost savings endeavor. More ....

Proposed Experimental Actions For Water Years 2005-2006 Colorado River, Arizona, In Glen Canyon National Recreation Area And Grand Canyon National Park, U.S. Department Of The Interior, Bureau Of Reclamation, National Park Service, U.S. Geological Survey

All U.S. Government Documents (Utah Regional Depository)

In September 2002 the Bureau of Reclamation, National Park Service (NPS), and U.S. Geological Survey released an environmental assessment (EA) on proposed experimental releases from Glen Canyon Dam and removal of non‐native fish from the Colorado River in Grand Canyon, Arizona (Bureau of Reclamation, NPS, and USGS 2002). The experiment was developed by the Grand Canyon Monitoring and Research Center of the U.S. Geological Survey (GCMRC), cooperating scientists, and the Technical Work Group (TWG) of the Glen Canyon Dam Adaptive Management Program (GCDAMP). It was recommended to the Secretary of the Interior by the Adaptive Management Work Group (AMWG), a …

The Value Of Created Dunes To Address Coastal Hazards In Chesapeake Bay: Hurricane Isabel Impacts, C. Scott Hardaway Jr., Donna A. Milligan, Travis R. Comer

Reports

Perhaps the most important function of a created dune, from some perspectives, is coastal protection. Since the initiation of this subtask within the overall Chesapeake Bay Dune Monitoring and Management Analysis project, Hurricane Isabel impacted the coastal plain of Virginia and significantly altered almost all Bay shorelines to one degree or another. This is particularly true of shorelines facing north, east, and south since the winds shifted as the storm passed. The original task scope has changed slightly as a result of Isabel’s passage since it was such a significant storm event and provided an opportunity to show how dunes …

Reducing Nutrient Discharge From Agriculture Through The Implementation Of Bmps – How Far Can We Go?, David Weaver, Simon Neville, Robert Summers, Martin Clarke

Conference papers and presentations

Algal blooms in south west Western Australia are a symptomatic response to excess nutrient input. Whilst a range of Best Management Practices (BMPs) are available to address the causes of nutrient pollution, most investment has been directed towards symptoms. In order to treat nutrient pollution causes effectively it is important to evaluate possible nutrient reductions and costs, and to determine whether accrued benefits can influence BMP adoption. Models were developed for catchments near Albany (south coast of Western Australia), and for the Peel-Harvey catchment (70 km south of Perth) to estimate costs and benefits of implementing conventional BMPs in scenarios …

Data Summary From The Tampa Bay Interagency Seagrass Monitoring Program Through Year 2003, Walt Avery, Roger Johansson

Reports

Results regarding seagrass species abundance, distribution, and zonation over time are presented for the 1997-2003 period in Hillsborough Bay (HB, Figures 15-26) and the 1998-2003 period for Old Tampa Bay (OTB, Figures 3-14), Middle Tampa Bay (MTB, Figures 28-40), Lower Tampa Bay, including Terra Ceia Bay (LTB, Figures 41-56), and Boca Ciega Bay (BCB, Figures 57-68). For each transect, results are presented in a graphic format illustrating annual species composition, abundance, and distribution. Seagrass abundance is presented as percent coverage within a square meter using the Braun Blanquet coverage class system.

Interm Report Of A Pilot Study To Evaluate Impacts To Water Quality And Seagrass Meadows From The Green Mussel (Perna Viridis) Invasion In Hillsborough Bay, Tampa Bay, Florida., J.O.R. Johansson, W. M. Avery

Reports

The green mussel (Perna viridis) was discovered in Tampa Bay in 1999 and was first noted as a biofouler at a power generating plant. This was apparently the first record of this species in the U.S. Since 1999, green mussels have been found throughout Tampa Bay and in other marine locations outside Tampa Bay on the west-coast of Florida (Benson et al. 2001; Benson et al. 2002).

This report constitutes an interim report provided to the Tampa Bay Estuary Program (TBEP) to describe progress on the project to date. A final project report, including a detailed discussion of …

Benthic Community Monitoring For The Little Venice Sewage Collection And Treatment Project In Marathon, Florida, Joseph N. Boyer, Danielle Mir-Gonzalez, Ronald Jones

SERC Research Reports

No abstract provided.

Accomack County Dune Inventory, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, George R. Thomas, Walter L. Priest, Linda M. Meneghini, Thomas A. Barnard, Christine A. Wilcox

Reports

Accomack County is located on the Eastern Shore of Virginia (Figure 1). Only dune sites on Chesapeake Bay were analyzed. A total of 33 dune sites were identified along Accomack’s shoreline (Figure 2). It is the intent of this publication to provide the user with information on the status of dunes in Accomack County. This information comes from research performed in 1999 and 2000 which was presented in a report entitled “Chesapeake Bay Dune Systems: Evolution and Status (Hardaway et al., 2001). Although somewhat dated, the information provides a short historical perspective of the state of each site at the …

Proposals For Community Discussion : A Quality Future For Recreational Fishing In The Pilbara/Kimberley : A Five-Year Draft Strategy For Managing The Recreational Component Of The Catch, Pilbara/Kimberley Recreational Fishing Working Group.

Fisheries management papers

With a growing population and advances in technology, fishing pressure will continue to grow and anglers will become more efficient at targeting fish - particularly offshore demersal species, such as tropical snappers and emperors. There is also a clear need for recreational fisheries management to complement the existing management arrangements for the charter industry, and provide the necessary framework for recreational fishing to be incorporated into an integrated management framework with other fishing sectors.

Lancaster County Dune Inventory, C. Scott Hardaway Jr., Donna A. Milligan, Lyle M. Varnell, George R. Thomas, Walter L. Priest, Linda M. Meneghini, Thomas A. Barnard, Christine Wilcox

Reports

Lancaster County, Virginia is located at the confluence of the Rappahannock River and Chesapeake Bay (Figure 1). Most of the dunes are located along the Rappahannock River with the remainder along Chesapeake Bay. There are a total of 45 dune sites identified along the Lancaster County shoreline (Figure 2). It is the intent of this publication to provide the user with information on the status of dunes in Lancaster County. This information comes from research performed in 1999 and 2000 which was presented in a report entitled “Chesapeake Bay Dune Systems: Evolution and Status (Hardaway et al., 2001). Although somewhat …

An Invasive Species Assessment Protocol: Evaluating Non-Native Plants For Their Impact On Biodiversity, Version 1, Larry E. Morse, John M. Randall, Nancy Benton, Ron Hiebert, Stephanie Lu, Natureserve

All U.S. Government Documents (Utah Regional Depository)

NatureServe, in cooperation with The Nature Conservancy and the U.S. National Park Service, developed this Invasive Species Assessment Protocol as a tool for assessing, categorizing, and listing non-native invasive vascular plants according to their impact on native species and natural biodiversity in a large geographical area such as a nation, state, province, or ecological region. This protocol is designed to make the process of assessing and listing invasive plants objective and systematic, and to incorporate scientific documentation of the information used to determine each species’ rank. NatureServe’s methodology has previously included assessments of the conservation significance of native species; this …

Seagrass And Caulerpa Monitoring In Hillsborough Bay Fifteenth Annual Report, City Of Tampa Department Of Sanitary Sewers

Reports

This is the fifteenth annual report submitted to the FDEP to satisfy the requirements set forth in Reclaimed Water and Effluent Limitations and Monitoring Requirements condition #10 of the Howard F. Curren WWTP operation permit FL0020940-001-DW1P.

The City of Tampa, Department of Sanitary Sewers, Bay Study Group (BSG), created in 1976, has monitored the effects of pollution abatement that occurred in Hillsborough Bay when the Howard F. Curren Advanced Wastewater Treatment Plant (formerly Hookers Point Wastewater Treatment Plant) was upgraded to secondary treatment in 1978 and advanced treatment in 1979. During the mid 1980's, water quality improvements and evidence of …

Results Of The City Of Tampa Surface Water Compliance Monitoring Program For The Year 2003 And Examination Of Long-Term Water Quality And Biological Indicator Trends In Hillsborough Bay, The City Of Tampa Wastewater Department

Reports

This report is submitted to the Florida Department of Environmental Protection (FDEP) to satisfy the requirements set forth in Reclaimed Water and Effluent Limitations and Monitoring Requirements condition No. 10 of the Howard F. Curren WWTP operation permit FL0020940-001- DW1P. The report is based on data obtained by the City of Tampa (COT) surface water compliance monitoring program approved on August 14, 2000 by the FDEP. The report includes examination of long-term trends for water quality parameters and biological indicators collected by the City of Tampa Bay Study Group and the Environmental Protection Commission of Hillsborough County (EPC).

Draft Aquaculure Plan For Exmouth Gulf, Department Of Fisheries

Fisheries management papers

The Plan’s objective is to provide a sound strategy for developing future aquaculture activities in Exmouth Gulf, while at the same time conserving the unique environment of Exmouth Gulf for present and future generations, and minimising conflict with existing and future users of Exmouth Gulf.

Floodplain Habitat Restoration At Thunder Ranch, Utah, U.S. Department Of The Interior, Bureau Of Reclamation

All U.S. Government Documents (Utah Regional Depository)

The Upper Colorado River Endangered Fish Recovery Program (Recovery Program) is proposing to restore endangered fish habitat at 330 acres of Green River bottomlands located on the Thunder Ranch near Jensen, Utah. The Recovery Program acquired a total of 455 acres of easement from Thunder Ranch to protect and improve floodplain habitat for the benefit of endangered Colorado River fishes. The project area is located adjacent to the Green River within an old meander river channel. Several ponds and wetlands exist in the project area, but are isolated from the Green River by an earth-filled levee. By notching the existing …

Factors Influencing Seagrass Recovery In Feather Sound, Tampa Bay, Florida, Feather Sound Seagrass Recovery Workgroup

Reports

This document is a summary of the findings and recommendations of the Feather Sound Seagrass Recovery Workgroup.

In response to nutrient load reductions and resulting clearer water, seagrasses have expanded significantly in many areas of Tampa Bay since the mid-1980s. However, the recovery rate and expansion of seagrasses in several areas, especially in the Feather Sound region of Old Tampa Bay, have been much slower. This project was designed to examine factors that may be affecting seagrass recovery and growth in the Feather Sound region compared to three other areas of Old Tampa Bay.

Draft Plan Of Management For The Kalbarri Blue Holes Fish Habitat Protection Area., Department Of Fisheries

Fisheries management papers

The overall objective of the proposed FHPA and the associated Plan of Management is to conserve and protect a portion of the near-shore reef ecosystem in the vicinity of the Blue Holes, and to manage activities within the area, to promote the observation and protection of fish living within the area. Strong community commitment has already been demonstrated, and this is crucial in the implementation of the proposed management plan

Fish Stock And Fishery Enhanceent In Western Australia. A Summary Report., Department Of Fisheries

Fisheries management papers

This summary paper provides an overview of the key proposals set out in the full policy discussion paper, Fisheries Management Paper No 175. It does not discuss the theoretical background for the framework presented and therefore readers interested in such discussion are directed to Fisheries Management Paper No 175. Both papers have been prepared to encourage public involvement in the development of policy for stock enhancement within Western Australian waters. Stock enhancement can involve an existing fishery or creation of a new fishery through the translocation of fish. It affects both public and private waters.

Millenial-Scale Climatic Oscillations In New Zealand During The Last Glacial Cycle; Pep Iii Transect, George H. Denton

University of Maine Office of Research Administration: Grant Reports

Millennial-Scale Climatic Oscillations in New Zealand During the Last Glacial Cycle: PEP III Transect Paleoclimate records from Greenland ice cores and North Atlantic sediments indicate that the glacial climate over the North Atlantic basin was punctuated with large and frequent abrupt climatic changes (Dansgaard-Oeschger and Henrich events). Because the events first appeared to have been regionally restricted, most explanations have invoked regional forcing mechanisms. But quite a different perspective would emerge if these events were shown to be of this global-scale. SGER award supports a reconnaissance study of the glacial and vegetative paleoclimate record of the massive morainal deposits of …

Seagrass Monitoring In Old Tampa Bay (Task C), J. O. R. Johansson, W. M. Avery

Reports

The seagrass monitoring program coincided with the Old Tampa Bay water quality program, also a technical element of the seagrass restoration strategy project. The primary objective of the seagrass monitoring project was to establish baseline seagrass characteristics in the selected study areas. In addition, the measured seagrass characteristics were to be examined for year-to-year variations, potential relationships with water quality parameters, and also if possible, for relationships with results from other technical elements included in the wide encompassing seagrass restoration strategy project.

Fish Stock And Fishery Enhancement In Western Australia. A Discussion Paper., Department Of Fisheries

Fisheries management papers

The objective of this paper is to propose a process that will allow the decision makers to objectively assess the appropriateness, benefits and costs of any stock enhancement proposal under Ecologically Sustainable Development (ESD) principles. To this end, this paper sets out a conceptual framework for assessment of stock enhancement projects, putting stock enhancement within the wider framework of fisheries and ecosystem management strategies, and their assessment, in Western Australia.

Colorado College State Of The Rockies Report Card, Walter E. Hecox, F. Patrick Holmes

Publications (SD)

No abstract provided.

Greening Connecticut Cities And Towns, Managing Public Trees And Community Forests, Glenn D. Dreyer, Robert M. Ricard

Other Publications and Reports

No abstract provided.

Land For Maine's Future Program: Increasing The Return On A Sound Public Investment, Richard Barringer, Hugh Coxe, Jack Kartez, Catherine Reilly, Jonathan Rubin

Economics and Finance

Maine is nowhere a more special place than in the quality of its landscape and the traditions of its land use. Among the mo st privately-owned of all the states, Maine’s natural diversity and beauty combine with its traditions of resource stewardship, open access, and appreciation of nature to distinguish it in the public mind and national imagination. In recent decades, however, these traditions have come under assault from the forces of economic and social change; and the people of Maine have responded. In 1986, Governor Joseph Brennan’s Special Commission on Outdoor Recreation recognized the growing threats to Maine’s natur …

Limulus In The Limelight: Exploring An Ancient Species, John Tanacredi Ph.D.

Faculty Works: CERCOM

In an era when sports numbers shatter historical ceilings (especially in baseball) and fall by the wayside like fall leaves, a most enduring record of life continues to crawl along emerging from the sea early each spring pronouncing their incredible "record" of existences... over 350 million years. Now there is a number that even the rarified air of baseball salaries can admire. Yet, today the remarkable sea creature which endured over 100 million years of dramatically changing earth history prior to the existence of the dinosaurs, and which is comprised of only four species globally, is being tested for its …

An Agricultural Drought Risk-Assessment Model For Corn And Soybeans, Hong Wu, Kenneth G. Hubbard, Donald A. Wilhite

Drought Mitigation Center: Faculty Publications

Copyright © 2004 Royal Meteorological Society. Published by Wiley InterScience. Used by permis-sion.

A Comparison Of Aviris And Landsat For Land Use Classification At The Urban Fringe, Rutherford V. Platt, Alexander F.H. Goetz

Environmental Studies Faculty Publications

In this study we tested whether AVIRIS data allowed for improved land use classification over synthetic Landsat ETM+ data for a location on the urban-rural fringe of Colorado. After processing the AVIRIS image and creating a synthetic Landsat image, we used standard classification and post-classification procedures to compare the data sources for land use mapping. We found that, for this location, AVIRIS holds modest, but real, advantages over Landsat for the classification of heterogeneous and vegetated land uses. Furthermore, this advantage comes almost entirely from the large number of sensor spectral bands rather than the high Signal-to-Noise Ratio (SNR).

National Strategy And Implementation Plan For Invasive Species Management, U.S. Department Of Agriculture, Forest Service

All U.S. Government Documents (Utah Regional Depository)

The Chief of the U.S.Department of Agriculture Forest Service has identified invasive species as one of the four critical threats to our Nation’s ecosystems. In response to this national threat,we have evaluated the role of the Forest Service as a leading forest research, forest health, and Federal resource management agency.We are aware of our significant role in addressing invasive species threats at the local, State, and national levels, as well as internationally.We have found the best opportunity for success comes from working strategically, using all our scientific, management, and partnership resources in unison. This document is not designed to serve …

Grass Or Trees? Performance Of Riparian Buffers Under Natural Rainfall Conditions, Australia, Lucy Mckergow, I Prosser, R Grayson, David Weaver, D Heiner

Journal articles

Riparian vegetation can trap sediment and nutrients derived from hillslopes. Most research into the effectiveness of riparian buffers has been experimental and little quantitative data exists on performance under natural field conditions. This study reports on grass and tree buffer performance under natural rainfall conditions in two contrasting Australian environments. Buffers receiving runoff from hillslopes cropped with bananas were monitored over a 4-year period in the wet topics of Far North Queensland (FNQ). Runoff, bedload and suspended loads were measured leaving the crop and leaving 15 m wide dense grass and remnant rainforest riparian buffers. The grass buffer was able …