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  5. Technical Report
Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/6381
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dc.contributor.authorDoyle, Robert D. (Robert Donald)en_US
dc.contributor.authorSmart, R. Michaelen_US
dc.creatorAquatic Plant Control Research Program (U.S.)en_US
dc.creatorU.S. Army Engineer Waterways Experiment Stationen_US
dc.date.accessioned2016-03-23T19:55:11Zen_US
dc.date.available2016-03-23T19:55:11Zen_US
dc.date.issued1995-11en_US
dc.identifier.govdocTechnical Report A-93-6en_US
dc.identifier.urihttp://hdl.handle.net/11681/6381en_US
dc.descriptionTechnical Reporten_US
dc.description.abstractAquatic plant species that form dense floating canopies or mats at water surface often negatively impact the ecological and economic values of a water body. In Guntersville Reservoir, this growth form is exhibited by both the weedy, nonnative aquatic macrophyte Myriophyllum spicatum (Eurasian watermilfoil) and the nuisance, albeit native, mat-forming cyanobacteria Lyngbya wollei (lyngbya). In contrast to the few species that cause problems, most native aquatic plant species exhibit growth forms that enhance water quality and/or habitat values of the aquatic systems. In addition, greenhouse and pond research have indicated that established populations of native aquatic plants serve to minimize or prevent establishment of less desirable species. This report presents results of field trials designed to test the central hypothesis that small populations of native plants, deliberately established in areas experiencing or subject to infestation by one of the two nuisance species in Guntersville Reservoir, are able to survive and ameliorate the negative impacts of nuisance species. One aspect of this research examined the ability of established plots of three native species to withstand reinvasion by M. spicatum. Small plots of the native submersed species Vallisneria americana (wild celery), the floating-leaved species Potamogeton nodosus (American pondweed), and the floating-leaved/emergent species Nelumbo lutea (American lotus) were established during a general decline of M. spicatum in Guntersville Reservoir. This offered the opportunity to examine the potential of these species for preventing reinfestation of M. spicatum as it regrew within the reservoir. Although establishment of the natives was complicated by high herbivory pressures, results indicate that established plots of V. americana and N. lutea significantly reduced the regrowth of M. spicatum relative to unplanted control plots. In contrast, P. nodosus was not effective at preventing regrowth of M. spicatum. However, failure of this floating-leaved species to effectively compete with M. spicatum in this study may have resulted from the small plot size used. A second aspect of this research investigated the ability of the native emergent macrophyte Pontederia cordata (pickerelweed) and of the floating-leaved species P. nodosus to minimize the negative impacts of L. wollei. This research indicated that, when well-established, both species were effective at redistributing the mass of L. wollei and preventing the formation of the nuisance floating mat during the summer period, offering immediate relief for the most noxious of the many negative characteristics of the mats. In addition, P. cordata growth changed the environmental conditions where it grew by reducing incident light and sediment nutrients available to the L. wollei mats. These and perhaps other changes to the environment caused by establishment of this macrophyte significantly reduced the mass of L. wollei within the vegetated plots. Establishment of P. cordata may offer an effective, longterm control for L. wollei.en_US
dc.description.sponsorshipAquatic Plant Control Research Program (U.S.)en_US
dc.description.sponsorshipUnited States. Army. Corps of Engineersen_US
dc.description.tableofcontentsPreface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v Conversion Factors, Non-SI to SI Units of Measurement . . . . . . . . . . . . vii 1- Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2-Competitive Interactions Between Vallisneria americana or Potamogeton nodosus and Myriophyllum spicatum . . . . . . . . . . . . . . . 4 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Results and Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3-Competitive Interactions Between Nelumbo lutea and Myriophyllum spicatum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . 8 Results and Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4 Competitive Interactions of Pontederia cordata and Potamogeton nodosus with Lyngbya wollei . . . . . . . . . . . . . . . . . . . 11 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Experimental Objectives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Establishment of native plants . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Biomass harvests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Environmental conditions within P. cordata plots . . . . . . . . . . . . . . 14 Container experiments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Macrophyte growth . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 L. wollei floating surface mat . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Lyngbya wollei biomass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Environmental conditions within P. cordata plots . . . . . . . . . . . . . . 18 Container experiments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Discussion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 5-Conclusions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Figures 1-17 Tables 1-3 Photos 1-3 SF 298en_US
dc.format.extent49 pages/9.4 MBen_US
dc.format.mediumPDFen_US
dc.language.isoen_USen_US
dc.publisherU.S. Army Engineer Waterways Experiment Stationen_US
dc.relationhttp://acwc.sdp.sirsi.net/client/en_US/search/asset/1043526en_US
dc.relation.ispartofseriesTechnical Report (Aquatic Plant Control Research Program (U.S.)) ; no.Technical Report A-93-6en_US
dc.rightsApproved for public release; distribution is unlimiteden_US
dc.sourceThis Digital Resource was created from scans of the Print Resourceen_US
dc.subjectAmerican lotusen_US
dc.subjectAmerican pondweeden_US
dc.subjectAquatic plant managementen_US
dc.subjectEstablishment of native macrophytesen_US
dc.subjectEurasian watermilfoilen_US
dc.subjectGuntersville Reservoiren_US
dc.subjectAlabamaen_US
dc.subjectLittoral zone restorationen_US
dc.subjectLyngbya wolleien_US
dc.subjectNelumbo luteaen_US
dc.subjectPickerel weeden_US
dc.subjectPlant competitionen_US
dc.subjectPonlederia cordataen_US
dc.subjectPotamogeton nodosusen_US
dc.subjectVallisneria americanaen_US
dc.subjectAquatic plantsen_US
dc.subjectAquatic Plant Control Research Program (U.S.)en_US
dc.titlePotential use of native aquatic plants for long-term control of problem aquatic plants in Guntersville Reservoir, Alabama. Report 2, Competitive interactions between beneficial and nuisance speciesen_US
dc.typeReporten_US
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