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Please use this identifier to cite or link to this item: https://hdl.handle.net/11681/6259
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dc.contributor.authorGross, Dena T.en_US
dc.contributor.authorSutphen, Dareth A.en_US
dc.contributor.authorMcDiarmid, Roy W.en_US
dc.contributor.authorBancroft, G. Thomasen_US
dc.contributor.authorGodley, J. Steveen_US
dc.contributor.authorRojas, N. Nanen_US
dc.creatorAquatic Plant Control Research Program (U.S.)en_US
dc.creatorUniversity of South Florida. Department of Biologyen_US
dc.creatorNational Museum of Natural History (U.S.)en_US
dc.creatorEnvironmental Laboratory (U.S.)en_US
dc.date.accessioned2016-03-23T19:47:34Zen_US
dc.date.available2016-03-23T19:47:34Zen_US
dc.date.issued1983-07en_US
dc.identifier.govdocMiscellaneous Paper A-83-5en_US
dc.identifier.urihttp://hdl.handle.net/11681/6259en_US
dc.descriptionMiscellaneous Paperen_US
dc.description.abstractSpecies accounts provided in this report summarize our knowledge of the natural history of the 30 species of amphibians and reptiles known from Lake Conway, Florida. The accounts focus on two major objectives of the Lake Conway herpetofaunal project: (1.) to identify spatial and temporal changes in life-history parameters of the component species, and (2.) to determine whether any observed changes were the result of the white amur aquatic plant control program. Important confounding factors influencing the ecological organization of the Lake Conway herpetofauna also were examined. Quantitative annual changes in at least one of nine measured ecological parameters were detected in 17 (56.7%) of the species during the three-year study (1977-1980). Among the 30 species, ecological changes were recorded for two of four salamanders, all eight frogs, the American alligator, five of ten turtles, and one of seven snakes. Of those species in which yearly variation was observed, most showed a change in relative density (N=15), followed by seasonal activity (6.), population structure (5), open water habitat use (4), food habits (4), and movement patterns (1). No yearly variation was detected in the use of specific littoral zone habitats, growth rates, or reproductive output per individual. Our ability to detect ecological changes was strongly dependent upon sample size for the species. Ecological shifts in the herpetofauna of Lake Conway were caused by at least nine factors, grouped into four general categories: white amur, human disturbance, natural phenomena, unknown. These causative agents often were operating simultaneously, and confounded the effects of the fish. Human disturbance, through shoreline development (N=14 species), destruction or removal of individuals from the lake system (N=2), boat propeller mortality (N=3), and investigator effects (N=4), was responsible for more changes in more species than any other category: two hylid frog species were extirpated from Lake Conway as a resuit of shoreline development. Annual fluctuations in water level (N=5 species) and weather conditions (N=6) affected some species. Four species experienced an ecological shift in which the causative agent(s) was not identified. One higher order interaction was detected in one species. The white amur was implicated as contributing to or directly causing distinct annual shifts in the ecology of one salamander and three turtle species. These species exhibited changes in the use of open water habitats (N=4 species), population structure (N=1), density (N=3) , and food habits (N=3) , which were attributable to the effects of the fish. Thus, macrophyte removal by white amur, acting in concert or perhaps synergistically with other disturbance phenomena, has caused significant ecological changes in the herpetofauna of Lake Conway.en_US
dc.description.sponsorshipAquatic Plant Control Research Program (U.S.)en_US
dc.description.sponsorshipPrepared for U. S. Army Engineer District, Jacksonville, Jacksonville, Fla. 32201 and Office, Chief of Engineers, U. S. Army, Washington, D. C. 20314 under Contract No. DACW39-76-C-0047en_US
dc.description.tableofcontentsPreface.........................1 Part I: Introduction.........................5 Part II: Methods and Materials.........................8 Part III: The Lake Conway System.........................14 Part IV: Species Accounts.........................16 Amphibia: Caudata.........................17 Amphiuma means.........................17 Eurycea quadridigitata.........................38 Pseudobranchus striatus.........................39 Siren lacertina.........................39 Amphibia: Anura.........................55 Bufo terrestris.........................57 Acris gryllus.........................63 Hyla cinerea.........................64 Hyla femoralis.........................72 Hyla squirella.........................72 Gastrophyryne carolinensis.........................73 Rana grylio.........................75 Rana utricularia.........................81 Reptilia: Crocodilia.........................88 Alligator mississippiensis.........................89 Repitilia: Testudinata.........................100 Chelydra serpentina.........................101 Chrysemys picta.........................103 Deirochelys reticularia.........................104 Pseudemys floridana.........................104 Pseudemys nelsoni.........................142 Pseudemys scripta.........................162 Kinosternon baurii.........................164 Kinosternon subrubrum.........................166 Sternotherus odoratus.........................174 Trionyx ferox.........................207 Reptilia: Squamata.........................211 Coluber constrictor.........................212 Farancia abacura.........................212 Nerodia cyclopion.........................213 Nerodia fasciata.........................227 Regina alleni.........................232 Thamnophis sauritus.........................232 Thamnophis sirtalis.........................233 Part V: Discussion and Conclusions.........................234 References.........................246 Appendix A: Summary of Sampling Methods, Pool Totals, Permanent Site Totals, Funnel Trap Captures, and Herp-Patrol Results (Total Sample and Breeding Frogs Only) On Lake Conway During the Three-year Study.........................A1 Appendix B: Summary of Detected Annual Changes in the Ecology of the Thirty Species of Amphibians and Reptiles Inhabiting Lake Conway, and an Assessment of the Causative Agents.........................B1en_US
dc.format.extent307 pages/18.46 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/1044207en_US
dc.relation.ispartofseriesMiscellaneous Paper (Aquatic Plant Control Research Program (U.S.)) ; no.Miscellaneous Paper A-83-5en_US
dc.rightsApproved for public release; distribution is unlimiteden_US
dc.sourceThis Digital Resource was created from scans of the Print Resourceen_US
dc.subjectAmphibiaen_US
dc.subjectAmphibiansen_US
dc.subjectReptilesen_US
dc.subjectAquatic animalsen_US
dc.subjectWhite amuren_US
dc.subjectCtenopharyngodon idellaen_US
dc.subjectGrass carpen_US
dc.subjectBiocontrolen_US
dc.subjectBiological controlen_US
dc.subjectAquatic plant controlen_US
dc.subjectLake Conway (Fla.)en_US
dc.subjectEcosystemsen_US
dc.subjectEcologyen_US
dc.subjectAquatic ecologyen_US
dc.subjectAquatic Plant Control Research Program (U.S.)en_US
dc.titleLarge-scale operations management test of use of the white amur for control of problem aquatic plants : the herpetofauna of Lake Conway : species accountsen_US
dc.typeReporten_US
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