• Login
    View Item 
    •   Home
    • University Colleges
    • SUNY Brockport
    • Faculty/Staff Publications
    • Environmental Science and Ecology Faculty Publications
    • View Item
    •   Home
    • University Colleges
    • SUNY Brockport
    • Faculty/Staff Publications
    • Environmental Science and Ecology Faculty Publications
    • 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 DateAuthorsTitlesSubjectsThis CollectionPublication DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    Campus Communities in SOAR

    BrockportCantonDownstateEmpireFashion Institute of TechnologyFredoniaMaritimeNew PaltzOneontaOptometryOswegoPlattsburghSUNY Polytechnic InstituteSUNY PressUpstate Medical

    Statistics

    Display statistics

    Population Assessment and Habitat Use of Brown Trout Following Severe Overwinter Predation from Common Mergansers in a Western New York Stream

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Name:
    env_facpub/112/fulltext (1).pdf
    Size:
    575.2Kb
    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
    Wilcox, Douglas A.
    Corser, Kevin E.
    Keyword
    Brown Trout
    Mergus Merganser (Common Merganser)
    Oatka Creek
    Journal title
    Northeastern Naturalist
    Date Published
    2019-01-01
    Publication Volume
    26
    Publication Issue
    4
    
    Metadata
    Show full item record
    URI
    http://hdl.handle.net/20.500.12648/2237
    Abstract
    Heavy predation by Mergus merganser (Common Merganser) during severe winters of 2013–2014 and 2014–2015 resulted in substantial reductions of wild Salmo trutta (Brown Trout) in open-water, groundwater-fed reaches of Oatka Creek in western New York State. New York State Department of Environmental Conservation considered the need for habitat manipulation to reduce the severity of future overwinter-predation by mergansers in Oatka Creek Park (OCP) but lacked data to make an informed decision. Thus, this study sought to estimate population abundance, density, and year-class distribution of Brown Trout; quantify the availability of cover and habitat; and identify habitat features used by Brown Trout in OCP. We recorded data for 100 Brown Trout (101–512 mm TL) during spring 2016, autumn 2016, winter 2017, and spring 2017. Despite the absence of mergansers in ensuing warmer winters, trout population indices decreased as the study continued, likely affected by high streamflow during sampling events. Year-class distributions typical of a small stream, however, suggest that the population is recovering. Velocity refuges and structural cover were the primary factors determining habitat selection. Large woody debris was the most favored cover type by all Brown Trout; however, boulders were also important, especially during low streamflow. Large trout (>300 mm) showed a strong preference for deepwater habitats with slow currents and high densities of woody debris and boulders, while small trout (< 200 mm) preferred shallower complex habitats with slow currents, course substrates, and high cover densities. Quality trout habitat and instream cover is abundant throughout OCP, but the abundance of highly complex overwinter habitats capable of providing protection from mergansers may be limited. Adding complex structural cover to areas favored by smaller trout (< 300 mm) could increase habitat complexity and likely reduce the severity of future overwinter predation.
    Collections
    Environmental Science and Ecology Faculty Publications

    entitlement

     

    DSpace software (copyright © 2002 - 2022)  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.