• Login
    View Item 
    •   Home
    • University Colleges
    • SUNY Brockport
    • Theses
    • Environmental Science and Ecology Theses
    • View Item
    •   Home
    • University Colleges
    • SUNY Brockport
    • Theses
    • Environmental Science and Ecology Theses
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of SUNY Open Access RepositoryCommunitiesPublication DateAuthorsTitlesSubjectsDepartmentThis CollectionPublication DateAuthorsTitlesSubjectsDepartmentAuthor ProfilesView

    My Account

    LoginRegister

    Campus Communities in SOAR

    Alfred State CollegeBrockportBroomeCantonDownstateEmpireFashion Institute of TechnologyFredoniaMaritimeNew PaltzOneontaOptometryOswegoPlattsburghSUNY Polytechnic InstituteSUNY PressUpstate Medical

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Population Characteristics, Habitats, and Movements of Lake Sturgeon (Acipenser fulvescens) in the Lower Niagara River

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    env_theses/78/fulltext (1).pdf
    Size:
    11.63Mb
    Format:
    PDF
    Download
    Average rating
     
       votes
    Cast your vote
    You can rate an item by clicking the amount of stars they wish to award to this item. When enough users have cast their vote on this item, the average rating will also be shown.
    Star rating
     
    Your vote was cast
    Thank you for your feedback
    Author
    Hughes, Thomas C.
    Keyword
    Lake Sturgeon
    Niagara River
    Threatened Species
    Date Published
    2002-05-01
    
    Metadata
    Show full item record
    URI
    http://hdl.handle.net/20.500.12648/6462
    Abstract
    Before my study, anecdotal information, such as incidental catches and reported sightings, provided the only means of assessing lake sturgeon, a species listed as threatened in New York State, in the lower Niagara River. The objectives of my study were to ( 1) assess the population of lake sturgeon by collecting and analyzing age, growth, and CPUE data, (2) compare the habitats and movements of adults and juveniles, and (3) identify potential spawning, feeding, and nursery habitats and compare use of these habitats between adults and juveniles. From late July 1998 through August 2000, 67 lake sturgeon were captured using gill nets, baited setlines, and SCUBA divers. Overall, divers (2.5 fish/night) performed better than gill nets (0.25 fish/night) and setlines (0.23 fish/night). Age of lake sturgeon captured ranged from 1 to 23 years, with most fish (n = 47) less than 10 years old. Six percent (4 out of 63) of the lake sturgeon captured had deformities, such as spinal curvature. Ultrasonic transmitters were attached to 24 fish (12 adults and 12 juveniles) to determine their habitat use and movements. Depth, current velocity, and substrate uses were similar between juvenile and adult fish. Monitoring the movements of adult fish during likely spawning temperatures (11 to 18°C) revealed that fish congregated both 8 to 10 km up river and within 5 km of the river's confluence with Lake Ontario. Based on the results of my study, I recommend that the lake sturgeon in the lower Niagara River remain listed as "threatened" by the NYSDEC and that the commercial and recreational fisheries remain closed. In addition, I recommend further studies investigating year class abundance, the cause of growth deformities, and the abundance and availability of food resources.
    Collections
    Environmental Science and Ecology Theses

    entitlement

     

    DSpace software (copyright © 2002 - 2023)  DuraSpace
    Quick Guide | Contact Us
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.