| Effect of Submersed Applications of Bispyribac-sodium on Non-target Emergent Vegetation |
Sep-2009 |
8 pages |
| Authors:
LeeAnn M Glomski; Linda S Nelson; Christopher R Mudge; Al Cofrancesco; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
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 | During the registration process for evaluating aquatic herbicides, it is important to determine both the efficacy on target vegetation as well as the potential impacts on non-target vegetation. Herbicide applications for submersed weeds can negatively impact some non-target emergent species. Factors such as the plant species and growth stage, and the herbicide treatment rates and exposure time can often dictate the selective potential of an aquatic herbicide. There are currently ... |
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| Production and Field Planting of Vegetative Propagules for Restoration of Redhead Grass and Sago Pondweed in Chesapeake Bay |
Aug-2009 |
13 pages |
| Authors:
Deborah Shafer; Laura Murray; W M Kemp; Deborah Hindle; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
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| During the last several decades, seagrasses and related submerged aquatic vegetation (SAV) have been lost from shallow waters of Chesapeake Bay (Orth and Moore 1983) and other coastal ecosystems worldwide (Short and Wyllie-Echeverria 1996). Losses of SAV beds are of particular concern because these plants tend to create rich habitat and food for animals, supporting growth of diverse fish, invertebrate and waterfowl populations (e.g., Kemp et al. 1984; Orth and ... |
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| Ecological Effects of Exotic and Native Aquatic Vegetation |
Aug-2009 |
125 pages |
| Authors:
R M Smart; Gary O Dick; Joe R Snow; David R Honnell; Dian H Smith; JoEtta K Smith; ENGINEER RESEARCH AND DEVELOPMENT CENTER LEWISVILLE TX LEWISVILLE AQUATIC ECOSYSTEM RESEARCH FACILITY
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| This report documents a study of environmental conditions and habitat quality of replicated pond ecosystems dominated by populations of exotic plants or mixed communities of native aquatic plants. Study ponds were similar in depth, size, and shape, as well as in (initial) water and sediment composition. The study design called for two phases, the first to evaluate developing plant communities, and the second to evaluate mature plant communities. This report ... |
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| Development of a Multi-Attribute Utility Analysis Model for Selecting Aquatic Plant Restoration Sites in Reservoirs |
Jul-2009 |
14 pages |
| Authors:
M J Grodowitz; M Smart; G O Dick; J A Stokes; J Snow; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
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| This technical note describes development of a decision support tool that uses multiattribute utility analysis to aid resource managers in selection of suitable sites for establishing native aquatic vegetation in large, multi-purpose reservoirs. |
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| Mass-Rearing Hydrellia Pakistanae Deonier and H. balciunasi Bock for the Management of Hydrilla verticillata |
Jun-2009 |
11 pages |
| Authors:
Nathan Harms; Michael Grodowitz; Julie Nachtrieb; ENGINEER RESEARCH AND DEVELOPMENT CENTER LEWISVILLE TX LEWISVILLE AQUATIC ECOSYSTEM RESEARCH FACILITY
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| This technical note summarizes the development and application of mass-rearing techniques using ponds at the U.S. Army Engineer Research and Development Center (ERDC) Lewisville Aquatic Ecosystem Research Facility (LAERF), Lewisville, TX for the biological control agents Hydrellia pakistanae Deonier and H. balciunasi Bock for use on Hydrilla verticillata (L.f.) Royle. Information is provided on rearing methods, releases, and associated costs. |
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| Integrated Weed Management Strategies for Control of Hydrilla |
Feb-2009 |
7 pages |
| Authors:
Linda S Nelson; Judy F Shearer; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| This technical note describes the results of a laboratory investigation conducted to evaluate the effectiveness of the herbicide diquat (6,7-dihydrodipyrido[1,2-a:2',1'-c]pyrazinediium), and the fungal pathogen Mycoleptodiscus terrestris (Gerd.) Ostazeski, applied alone and in combination with one another, as an integrated weed management strategy against the nuisance aquatic plant, hydrilla (Hydrilla verticillata (L.f.) Royle). |
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| The Impact of Harmful Algal Blooms on USACE Operations |
Jan-2009 |
16 pages |
| Authors:
I Linkov; F K Satterstrom; D Loney; J A Steevens; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| Algal blooms have recently attracted significant attention due to their human and ecological effects. The aim of this technical note is to assess the importance of freshwater harmful algal blooms (HABs) to U.S. Army Corps of Engineers (USACE) operations through a literature review and surveys from regional Corps personnel who manage algal blooms and related issues. This note discusses algal bloom formation factors, occurrence, impact, and management for both the ... |
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| Environmental Factors Affecting Aquatic Plant Growth Potential in Marinuka Lake, Wisconsin |
Dec-2008 |
14 pages |
| Authors:
William F James; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
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| Submersed aquatic macrophytes play an important role in stabilizing sediment from resuspension, sequestering nutrients, and reducing algal growth in shallow lakes. Loss of vegetation is usually accompanied by changes in stable state to one characterized by higher turbidity, low light penetration, and frequent noxious algal blooms. Aquatic vegetation once played an important role in stabilizing the sediment and providing important fish and water fowl habitat in Marinuka Lake, Wisconsin. However, ... |
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| Large-Scale Submerged Aquatic Vegetation Restoration in Chesapeake Bay: Status Report, 2003-2006 |
01-Jun-2008 |
91 pages |
| Authors:
Deborah J Shafer; Peter Bergstrom; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
|
| In 2003, the U.S. Army Engineer Research and Development Center (ERDC) and the National Oceanic and Atmospheric Administration Chesapeake Bay Office began a comprehensive research effort to restore submerged aquatic vegetation (SAV) in the Chesapeake Bay region. The effort employed an agricultural approach to restore under-water grasses by using seeds to produce new plants and mechanical equipment to plant seeds and harvest. Since this research initiative began, an average of ... |
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| Interim Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region |
APR 2008 |
154 pages |
| Authors:
ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
|
| This document is one of a series of Regional Supplements to the Corps of Engineers Wetland Delineation Manual, which provides technical guidance and procedures for identifying and delineating wetlands that may be subject to regulatory jurisdiction under Section 404 of the Clean Water Act or Section 10 of the Rivers and Harbors Act. The development of Regional Supplements is part of a nationwide effort to address regional wetland characteristics and ... |
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| Experimental Effects of Lime Application on Aquatic Macrophytes: 3. Growth Response Versus Exposure Time |
JAN 2008 |
6 pages |
| Authors:
William F. James; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS INFORMATION TECHNOLOGY LAB
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| This research investigates the effects of exposure time to lime-induced high pH and inorganic carbon limitation on the growth, survivorship, and reproductive success of Sago Pondweed (Stuckenia pectinatus). |
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| Application of Hyperspectral Techniques to Monitoring and Management of Invasive Plant Species Infestation |
Jan-2008 |
190 pages |
| Authors:
Susan L Ustin; Edward T Tom; Carlos M Ramirez; Karen S Olmstead; Nina Noujdina; Shawn Kefauver; John Kefauver; Deanne DiPietro; Yen-Ben Cheng; Maragaret E Andrew; Mary Andrews; Emma Underwood; CALIFORNIA UNIV DAVIS
|
| This report summarizes and integrates the main findings, using several case studies to illustrate conclusions. Case studies include cheatgrass and Russian knapweed at Yakima Training Center, showing that multiple dates that combine different growing seasons improve map accuracy. Also included are maps for kudzu and Johnson lovegrass at Fort Benning, tamarisk at Yuma Proving Ground and phragmites at Aberdeen Proving Ground. Examples were chosen to illustrate a range of problems ... |
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| Using Seeds to Propagate and Restore Vallisneria americana Michaux (Wild Celery) in the Chesapeake Bay |
DEC 2007 |
13 pages |
| Authors:
Kenneth A. Moore; Jesse C. Jarvis; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| Loss of submerged aquatic vegetation (SAV) has been significant in many coastal and estuarine systems such as the Chesapeake Bay where SAV die-offs have been observed in marine, brackish, and freshwater SAV communities (Orth and Moore 1983). Large-scale replanting using whole plants can be cost prohibitive, and the use of plants taken from wild populations for propagule supply may not be possible or desirable. The use of SAV seeds for ... |
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| Innovative Techniques for Large-Scale Collection, Processing, and Storage of Eelgrass (Zostera marina) Seeds |
DEC 2007 |
15 pages |
| Authors:
Robert J. Orth; Scott R. Marion; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| The use of eelgrass (Zostera marina) seeds is increasingly being recognized as a viable option for both small- and large-scale restoration projects. Although methods for hand-collecting, processing and storing eelgrass seeds have advanced to match the scale of collections, the number of seeds collected has limited the scale of restoration efforts, as well as the scale of ecologically relevant experiments. Recent experience with mechanized harvest of reproductive shoots has transcended ... |
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| A Summary of Eelgrass (Zostera marina) Reproductive Biology with an Emphasis on Seed Biology and Ecology from the Chesapeake Bay Region |
DEC 2007 |
12 pages |
| Authors:
Robert J. Orth; Scott R. Marion; Kenneth A. Moore; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| Interest in seagrass restoration is increasing worldwide as the value of seagrass ecosystems is recognized by scientists, managers and regulators (Orth et al. 2000, 2006b, 2006c). Seagrass transplanting projects have traditionally relied on adult plants (Fonseca et al. 1998) using a variety of manual and mechanical techniques (Fonseca et al. 1998, Fishman et al. 2004, Treat and Lewis 2006). However, most techniques using adult plants are laborintensive and time-consuming, requiring ... |
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| Expanded Simulation Models "Version 3.0" for Growth of the Submerged Aquatic Plants American Wildcelery, Sago Pondweed, Hydrilla, and Eurasian Watermilfoil |
NOV 2007 |
25 pages |
| Authors:
Elly P. Best; William A. Boyd; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
|
| This technical note describes modifications of simulation models for growth of four submersed aquatic vegetation (SAV) types, greatly expanding their application potential. The modifications include descriptions of the vegetation responses to daily changes in current velocity and epiphyte shading, and accommodation of daily changes in water level. These models can be used to evaluate key environmental conditions in which SAV would persist under a variety of management scenarios within the ... |
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| Carbon-Flow-Based Modeling of Ecophysiological Processes and Biomass Dynamics of Submersed Aquatic Plants |
SEP 2007 |
109 pages |
| Authors:
Elly P. H. Best; William A. Boyd; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
|
| Abstract: A dynamic simulation modeling approach to describing carbon- flow-based, ecophysiological processes and biomass dynamics of freshwater submersed aquatic plant species has been developed. The models describe major, carbon-flow-based ecophysiological processes and biomass dynamics of four common freshwater species and how these are influenced by factors such as light, temperature, current velocity, dissolved inorganic carbon availability, oxygen concentration, and human influences such as management measures (changes in turbidity, mechanical harvesting, ... |
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| Distribution and Abundance of Eurasian Watermilfoil (Myriophyllum spicatum L.) and Curly-Leaf Pondweed (Potamogeton crispus L.) in Shawano Lake, Wisconsin |
SEP 2007 |
12 pages |
| Authors:
Chetta S. Owens; William F. James; John G. Skogerboe; R. M. Smart; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
|
| Shawano Lake, Wisconsin has a history of invasive aquatic plant problems, specifically curly-leaf pondweed (Potamogeton crispus L.) and Eurasian watermilfoil (Myriophyllum spicatum L.). In addition to problems associated with invasive plant species, Shawano Lake has been experiencing declining water quality associated with phosphorus (P) loading potentially due to summer senescence of curly-leaf pondweed (James and Owens 2006). Located in east-central Wisconsin, this 6,063-acre lake has been infested with Eurasian watermilfoil, ... |
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| Impact of Invertebrate Herbivory on Native Aquatic Macrophytes |
AUG 2007 |
16 pages |
| Authors:
Julie G. Nachtrieb; Michael J. Grodowitz; R. M. Smart; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| This technical note quantifies the impact that invertebrate herbivores have on native aquatic plants by comparing dry biomass of five macrophyte species between two treatments; an insecticide treatment to remove invertebrate herbivores, and a control where the herbivore complex was left to develop naturally. There is little information available that quantifies the impact of invertebrate herbivores on native macrophyte biomass in the United States. Early research indicated that while macrophytes ... |
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| Potential Use of Native and Naturalized Insect Herbivores and Fungal Pathogens of Aquatic and Wetland Plants |
AUG 2007 |
64 pages |
| Authors:
Jan E. Freedman; Michael J. Grodowitz; Robin Swindle; Julie G. Nachtrieb; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
|
| Research is being conducted by U.S. Army Engineer Research and Development Center (ERDC) scientists to identify naturalized and/or native herbivores of aquatic plants in an effort to develop alternative management strategies through an understanding of the agents' biology and ecology. Some of the native species showing promise as biocontrol agents include Altica spp. for water primrose, Donacia spp. for American lotus, and Euhrychiopsis lecontei for Eurasian watermilfoil control. Naturalized species ... |
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| Experimental Effects of Lime Application on Aquatic Macrophytes: 4. Growth Response of Three Species |
APR 2007 |
13 pages |
| Authors:
William F. James; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| This investigation examined the growth response of three macrophyte species (Elodea canadensis, Stuckenia pectinata, and Vallisnaria ameilcana) to lime application in experimental mesocosms. |
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| Impact of Herbivory and Plant Competition on the Growth of Hydrilla in Small Ponds |
FEB 2007 |
10 pages |
| Authors:
Michael J. Grodowitz; Chetta S. Owens; R. M. Smart; Julie G. Nachtrieb; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| Insect herbivory and competition have been shown to negatively impact the ability of hydrilla (Hydrilla verticillata (L.f.) Royle) to grow and reproduce (Doyle et al. 2002). Previous research conducted at the Lewisville Aquatic Ecosystem Research Facility (LAERF), Lewisville, TX and other field sites has shown that sustained levels of herbivory by the leaf-mining flies (Hydrellia pakistanae Deonier and H. balciunasi Bock) can reduce hydrilla biomass by 30 percent, reduce reproduction ... |
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| Reproductive Ecology of Vallisneria americana Michaux |
DEC 2006 |
28 pages |
| Authors:
Dwilette G. McFarland; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| Nearly 20 years have passed since Korschgen and Green's publication (1988) on the ecology of Vallisneria americana, as a guide for restoration programs. While their report provides a wealth of important information, a great deal of research has been generated since their review was conducted. This technical note presents an update on the reproductive ecology of V. americana, based on available literature, much of which was published over the last ... |
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| Waves in Seagrass Systems: Review and Technical Recommendations |
NOV 2006 |
92 pages |
| Authors:
Evamaria W. Koch; Larry P. Sanford; Shih-Nan Chen; Deborah J. Shafer; Jane M. Smith; MARYLAND UNIV CAMBRIDGE CENTER FOR ENVIRONMENTAL SCIENCE
|
| Seagrasses are rooted flowering marine plants that provide a variety of ecosystem services to the coastal areas they colonize. Attenuation of currents and waves and sediment stabilization are often listed among these services. Although we have a reasonably good understanding of how currents affect seagrasses and vice-versa, less is known about interactions between waves and seagrasses, and standard methods for research on waves in seagrass systems have not yet been ... |
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| Guidelines for the Acquisition of Aerial Photography for Digital Photo-Interpretation of Submerged Aquatic Vegetation (SAV) |
OCT 2006 |
11 pages |
| Authors:
Sam S. Jackson; Mark R. Graves; Deborah J. Shafer; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| Monitoring the success of large-scale submerged aquatic vegetation (SAV) restoration projects requires the ability to detect and map the presence or absence of SAV, as well as assess changes in SAV distributions over time. Aerial photography is generally considered to be the most widely used, versatile, and relatively economical form of remote sensing (Lillesand and Kiefer 2000), and is the most common source of SAV mapping information (McKenzie et al. ... |
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| Application of Risk Assessment and Decision Analysis to Aquatic Nuisance Species |
OCT 2006 |
18 pages |
| Authors:
Burton C. Suedel; Todd S. Bridges; Jongbum Kim; Barry S. Payne; Andrew C. Miller; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| This technical note describes a structured framework for conducting risk assessments for aquatic nuisance species (ANS). The technical note also describes when and how decision analysis tools can be used in such assessments for ANS. This framework and methodology will enable risk managers to systematically evaluate and compare alternatives and actions supporting ANS risk management and thus credibly prioritize resources. Risk assessment is a globally accepted tool for assessing the ... |
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| Selective Control of Eurasian Watermilfoil and Curlyleaf Pondweed Using Low Doses of Endothall Combined With 2,4-D |
OCT 2006 |
16 pages |
| Authors:
John G. Skogerboe; Kurt D> Getsinger; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| This study was designed to evaluate early spring applications of low doses of endothall (1 mg/L ai) combined with 2,4-D (0.5 mg/L ai) to selectively control the invasive species curlyleaf pondweed (Potamogeton crispus L) and Eurasian watermilfoil (Myriophyllum spicatum L) in Minnesota lakes. |
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| Freshwater Aquatic Nuisance Species Impacts and Management Costs and Benefits at Federal Water Resources Projects |
SEP 2006 |
15 pages |
| Authors:
Richard A. Cole; ARMY CORPS OF ENGINEERS ALEXANDRIA VA OFFICE OF HISTORY
|
| A small fraction of the species that inhabit the nation's fresh waters become aquatic nuisance species (ANS) when they significantly degrade services provided by water resources. Government agencies, utilities, and other water resource managers incur substantial costs controlling ANS and repairing damage to restore service performance to desired levels. National costs of and benefits from ANS management appear to be increasing, but neither is particularly well documented (e.g., Lovell and ... |
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| Protocol for Large-Scale Collection, Processing, and Storage of Seeds of Two Mesohaline Submerged Aquatic Plant Species |
AUG 2006 |
9 pages |
| Authors:
Steve Ailstock; Deborah Shafer; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICS LAB
|
| A previous pilot study (Ailstock and Shafer 2004) established the seed reproductive potential of two species of submerged aquatic angiosperms, Ruppia maritima (widgeon grass) and Potamogeton perfoliatus (redhead grass), that predominate in the mesohaline reaches of the mid-Chesapeake Bay. This paper outlines a system for the collection, processing, storage, and germination of seeds in quantities sufficient to restore underwater grass habitats on a scale of hectares. Although this system was ... |
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| Proceedings from the Pacific Islands Region Threatened, Endangered, and At-Risk Species Workshop held 6-8 Jun 2006 in Honolulu, Hawaii |
01 JUN 2006 |
96 pages |
| Authors:
L. P. Boice; Alison A. Dalsimer; John A. Hall; Leslie L. Orzetti; Alicia J. Shepard; William E. Woodson; DEPUTY DIRECTOR OF DEFENSE RESEARCH AND ENGINEERING ARLINGTON VA STRATEGIC ENVIRONMENTAL RESEARCH AND DEVELOPMENT PROGRAM
|
| The specific objectives for the Pacific Islands Region TER-S Workshop were to: 1) identify and prioritize TER-S management needs among the Pacific Region Islands; 2) examine the current state of practice within DoD for TER-S management; 3) identify the gaps in knowledge, technology, and management; and 4) prioritize investment opportunities to address these gaps. To achieve these objectives, workshop sponsors and organizers brought together a broad spectrum of discipline experts ... |
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| Buoy-Deployed Seeding: A New Low-Cost Technique for Restoration of Submerged Aquatic Vegetation From Seed |
APR 2006 |
11 pages |
| Authors:
Chris Pickerell; Steve Schott; Sandy Wyllie-Echeverria; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| The Buoy-Deployed Seeding System (BuDS) (Figure 1) was developed to take advantage of the natural ability of mature reproductive shoots of eelgrass (Zostera marina) to release seeds over a period of weeks, and offers a low-cost alternative method of planting eelgrass using seed that can replace or compliment broadcast seeding efforts (Pickerell et al. 2005). This system may offer several advantages over current seeding methods including: 1) it may more ... |
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| Impacts of Mechanical Macrophyte Removal Devices on Sediment Scouring in Littoral Habitats: II. Experimental Operation in the Littoral Zone of Eau Galle Reservoir, Wisconsin |
MAR 2006 |
10 pages |
| Authors:
William F. James; David I. Wright; John W. Barko; Harry L. Eakin; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| Research experimentally evaluated the impacts of a mechanical macrophyte removal device on changes in sediment bed elevation and water quality in the littoral zone of a shallow embayment located in Eau Galle Reservoir, Wisconsin. Mechanical macrophyte removal devices are an attractive, low-cost means of removing macrophytes in specific areas without herbicides or repeated mechanical harvesting. However, commercially available mechanical macrophyte removal devices that employ a submerged roller arm and paddle ... |
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| Experimental Effects of Lime Application on Aquatic Macrophytes: 2. Growth Response Versus Treatment Time and Lime Concentration |
MAR 2006 |
14 pages |
| Authors:
William F. James; John W. Barko; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| This research investigated the effects of applying lime (as calcium hydroxide; Ca(OH)2) either early or later in the life cycle on the growth, survivorship, and reproductive success of Sago Pondweed (Stuckenia pectinatus) in an outdoor experimental mesocosm setting. |
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| The Role of Seagrasses and Kelps in Marine Fish Support |
FEB 2006 |
23 pages |
| Authors:
Derrick Blackmon; Tina Wyllie-Echeverria; Deborah J. Shafer; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| This report provides a comprehensive summary of research related to fish utilization of seagrass and kelp habitats in the Pacific Northwest in a single document that will serve as a useful reference for resource managers. Preparation of this document was sponsored by the USACE Wetlands Regulatory Assistance Program (WRAP) at the request of the Seattle District of the U.S. Army Corps of Engineers, Regulatory Branch. This document is organized into ... |
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| Applications and Limitations of Micropropagation for the Production of Underwater Grasses |
JAN 2006 |
12 pages |
| Authors:
Steve Ailstock; Deborah Shafer; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| Micropropagation is a technique that manipulates small quantities of axenic plant material, ranging from single cells to stem segments, under conditions favorable to the formation of new plants. It has proven to be the most efficient and cost-effective method of propagating large numbers of clonal offspring for many agronomic crops, including both herbaceous and woody perennial species. Older and simpler techniques of cloning plants are limited by seasonal constraints and ... |
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| Submersed Aquatic Vegetation Modeling Output Online |
NOV 2005 |
3 pages |
| Authors:
Yao Yin; Jim Rogala; John Sullivan; Jason Rohweder; GEOLOGICAL SURVEY LA CROSSE WI UPPER MIDWEST ENVIRONMENTAL SCIENCES CENTER
|
| The ability to predict the distribution of submersed aquatic vegetation in the Upper Mississippi River on the basis of physical or chemical variables is useful to resource managers. Wildlife managers have a keen interest in advanced estimates of food quantity such as American wild celery (Vallisneria americana) population status to give out more informed advisories to hunters before the fall hunting season. Predictions for distribution of submerged aquatic vegetation beds ... |
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| Propagation and Production of Native Aquatic Plants |
SEP 2005 |
8 pages |
| Authors:
Gary O. Dick; R. M. Smart; Joe R. Snow; ENGINEER RESEARCH AND DEVELOPMENT CENTER OMAHA NE
|
| BACKGROUND: Aquatic system restoration often involves establishment or reestablishment of native aquatic plant communities. The role of plants in aquatic systems is significant: in addition to providing valuable fish and wildlife habitat (Dibble et al. 1996), aquatic plants can improve water clarity and quality (James and Barko 1990), reduce rates of shoreline erosion and sediment resuspension (James and Barko 1995), and help prevent spread of nuisance exotic plant species (Smart ... |
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| Experimental Effects of Lime Application on Aquatic Macrophytes: 1. Growth Response Versus Concentration |
AUG 2005 |
7 pages |
| Authors:
William F. James; Harry L. Eakin; John W. Barko; AQUATIC NUISANCE SPECIES PROGRAM VICKSBURG MS
|
| The research reported herein investigated the effects of a range of lime (as calcium hydroxide; Ca(OH)2) dosage levels on the growth of Sago pondweed in outdoor experimental mesocosms. |
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| A Survey of the Invasive Aquatic and Riparian Plants of the Lower Rio Grande |
APR 2005 |
24 pages |
| Authors:
Chetta S. Owens; Michael J. Grodowitz; Fred Nibling; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
|
| Hydrilla (Hydrillia verticillata) has been exhibited extensive range expansion along the Rio Grande since its first discovery in early 1990 and is now found in areas far removed from the original infestation (Brownsville, TX). Hydrilla, a nonindigenous aquatic plant species, has been implicated in restricted water delivery, inaccurate water accounting, and an overall breakdown of system maintenance. In addition, the presence of hydrilla has had a decided impact on native ... |
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| A Survey of the Invasive Aquatic and Riparian Plants of the Low Rio Grande |
APR 2005 |
24 pages |
| Authors:
Chetta S. Owens; Michael J. Grodowitz; Fred Nibling; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
|
| Hydrilla (Hydrilla verticillata) has exhibited extensive range expansion along the Rio Grande since its first discovery in early 1990 and is now found in areas far removed from the original infestation (Brownsville, TX). Hydrilla, a nonindigenous aquatic plant species, has been implicated in restricted water delivery, inaccurate water accounting, and an overall breakdown of system maintenance. In addition, the presence of hydrilla has had a decided impact on native flora ... |
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| Update to the Propagation and Establishment of Aquatic Plants Handbook |
MAR 2005 |
44 pages |
| Authors:
R. M. Smart; Gary O. Dick; Joe R. Snow; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
|
| Man-made reservoirs initially lack aquatic plants, and their operation for flood protection or water supply may result in extreme water level fluctuations that hinder natural establishment. In many cases natural establishment could take decades or even longer. In the interim these reservoirs provide relatively poor aquatic habitat and water quality. Unvegetated aquatic ecosystems are also at risk of invasion by problematic, non indigenous species. These unvegetated man-made systems would benefit ... |
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| Rates and Effects of Sedimentation in the Context of Dredging and Dredged Material Placement |
MAR 2005 |
12 pages |
| Authors:
Gary L. Ray; Douglas G. Clarke; Robert M. Engler; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
|
| Dredging and disposal of dredged material in aquatic environments can expose animals and plants to episodic pulses of suspended sediment. Resuspended material can be deposited in thin layers adjacent to the dredging or disposal areas in some cases as much as several thousand meters distant (LaSalle et al. 1991). While our understanding of the potential effects of such far-field deposition is limited, some estuarine organisms may be highly sensitive to ... |
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| Multiyear Synthesis of the Aquatic Vegetation Component from 1991 to 2002 for the Long Term Resource Monitoring Program |
JAN 2005 |
45 pages |
| Authors:
Yao Yin; Heidi Langrehr; GEOLOGICAL SURVEY LA CROSSE WI UPPER MIDWEST ENVIRONMENTAL SCIENCES CENTER
|
| Aquatic vegetation data were collected in the Upper Mississippi River System (UMRS) under the Long Term Resource Monitoring Program (LTRMP). From 1991 to 2002, five reaches were surveyed every year (key pools), and another five reaches were surveyed once (outpools). The study design changed from a protocol involving sampling along transects (1991-2000) to a protocol incorporating stratified random sampling (1998-2002) with concurrent sampling under both protocols in 1998-2000. The frequency ... |
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| Aquatic Plant Assessments for Spring Creek Low-Dose Fluridone Injection Treatment. Year-of-Treatment and 2-Year Post-Treatment Findings |
JAN 2005 |
61 pages |
| Authors:
R. M. Stewart; Adam S. Way; Chetta S. Owens; Donald M. Morgan; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
|
| Lake Seminole was impounded in 1957 and hydrilla was discovered in the 1980's. By 1992, approximately 75 percent of the surface area of the reservoir was impacted by hydrilla. This study was conducted to determine effectiveness of low dose fluridone treatments in the Spring Creek Arm of Lake Seminole. Pre- and post-aquatic plant surveys using point-intercept, plant biomass and hydroacoustic techniques were conducted to assess treatment success. In year 2000, ... |
|
| Aquatic Plant Control Research Program Bulletin. Vol A-04-1, Nov 2004 |
NOV 2004 |
8 pages |
| Authors:
Gary O. Dick; R. M. Smart; Joe R. Snow; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
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| This issue of the APCRP Bulletin focuses on Aquatic Vegetation Restoration in Drakes Creek, Tennessee. The primary purpose of the Drakes Creek Section 1135 Restoration Project was to improve aquatic wildlife habitat in a floodwater conveyance. Drakes Creek is a major tributary embayment of the Old Hickory Reservoir on the Cumberland River, its mouth located at Cumberland River mile 222.2, 10 km upstream from Old Hickory Dam. The project site ... |
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| A Simulation Model on the Competition for Light of Meadow-forming and Canopy-forming Aquatic Macrophytes at High and Low Nutrient Availability |
SEP 2004 |
79 pages |
| Authors:
Elly P. Best; Gregory A. Kiker; William A. Boyd; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
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| A simulation model has been developed that focuses on the ability of two competing submersed macrophytes, meadow-forming and canopy-forming, to maintain their biomass under different environmental conditions. Vallisneria americana (American wildcelery) serves as the example for meadow-forming plants and Stuckenia pectinata (until recently known as Potamogeton pectinatus or sago pondweed) for canopy-forming plants. The model can be used to predict changes in species composition of submersed vegetation as a result ... |
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| Migratory Waterfowl Habitat Selection in Relation to Aquatic Vegetation |
SEP 2004 |
13 pages |
| Authors:
Gary O. Dick; JoEtta K. Smith; R. M. Smart; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
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| This technical note describes studies of environmental conditions and habitat quality of replicated pond ecosystems dominated by populations of exotic plants or mixed communities of native aquatic plants. Study ponds were similar in depth, size, and shape, as well as in (initial) water and sediment composition. One component of these studies included evaluation of migratory waterfowl utilization of pond habitats based upon vegetation community composition. Aquatic vegetation is a critical ... |
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| Combining Endothall with Other Herbicides for Improved Control of Hydrilla - A Field Demonstration |
AUG 2004 |
7 pages |
| Authors:
John Skogerboe; Toni Pennington; Jim Hyde; Craig Aguillard; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
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| This technical note describes the results of a field demonstration to examine the effectiveness of combining endothall applied as Aquathol(registered) K with other aquatic herbicides for control of hydrilla. Concentrations and combinations were based on previous greenhouse trials conducted at the Lewisville Aquatic Ecosystem Research Facility (LAERF) in Lewisville, Texas, using Aquathol(registered) K, Reward(registered) (diquat), Hydrothol(registered) 191 (endothall) and Cutrine(registered)-Plus (chelated copper). The use of herbicide combinations is a widespread ... |
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| Modeling the Impacts of Suspended Sediment Concentration and Current Velocity on Submersed Vegetation in an Illinois River Pool, USA |
JUL 2004 |
15 pages |
| Authors:
Elly P. Best; Allen H. Teeter; Shyam K. Nair; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS
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| This technical note uses a modeling approach to examine the impacts of suspended sediment concentrations and current velocity on the persistence of submersed macrophytes in a shallow aquatic system. Studies were conducted on Peoria Lake, Illinois, spanning historical times when a meadow-forming species (Vallisneria americana) successively thrived and disappeared, and current times when the return of submersed canopy-forming (Potamogeton pectinatus) and meadow- forming species is anticipated. Canopy-forming plants concentrate their ... |
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| Restoration Potential of Ruppia Maritima and Potamogeton Perfoliatus by Seed in the Mid-Chesapeake Bay |
JUL 2004 |
8 pages |
| Authors:
Steve Ailstock; Deborah Shafer; ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS ENVIRONMENTAL LAB
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| This technical note outlines protocols for assessing the reproductive potential of Ruppia maritima and Potamogeton perfoliatus, two species of submerged aquatic plants that pre-dominate in the mesohaline reaches of the mid- Chesapeake Bay. Once reproductive potential by seed is defined for healthy populations of these species, their life cycles can be evaluated to identify nondestructive methods of harvesting seeds for restoration projects. Such non- destructive methods would leave intact the ... |
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Reports by Keyword(s)
*AQUATIC PLANTS
