34 research outputs found

    2018 fox squirrel sighting survey summary

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    Due to concern about the population status of the fox squirrel across the Southeast, a fox squirrel sighting survey was initiated in South Carolina in 1989 to document distribution, habitat preference and relative abundance for this species. This report details information from the 2018 survey

    2006 annual report

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    The following report is a summary of tagging activity from the South Carolina Marine Game Fish Tagging Program for 2006

    2005 annual report

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    The following report is a summary of tagging activity from the South Carolina Marine Game Fish Tagging Program for 2005

    2008 annual report

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    The following report is a summary of tagging activity from the South Carolina Marine Game Fish Tagging Program for 2008

    2007 annual report

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    The following report is a summary of tagging activity from the South Carolina Marine Game Fish Tagging Program for 2007

    Effects of experimentally added salmon subsidies on resident fishes via direct and indirect pathways

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    Artificial additions of nutrients of differing forms such as salmon carcasses and analog pellets (i.e. pasteurized fishmeal) have been proposed as a means of stimulating aquatic productivity and enhancing populations of anadromous and resident fishes. Nutrient mitigation to enhance fish production in stream ecosystems assumes that the central pathway by which effects occur is bottom-up, through aquatic primary and secondary production, with little consideration of reciprocal aquatic-terrestrial pathways. The net outcome (i.e. bottom-up vs. top-down) of adding salmon-derived materials to streams depend on whether or not these subsidies indirectly intensify predation on in situ prey via increases in a shared predator or alleviate such predation pressure. We conducted a 3-year experiment across nine tributaries of the N. Fork Boise River, Idaho, USA, consisting of 500-m stream reaches treated with salmon carcasses (n = 3), salmon carcass analog (n = 3), and untreated control reaches (n = 3). We observed 2–8 fold increases in streambed biofilms in the 2–6 weeks following additions of both salmon subsidy treatments in years 1 and 2 and a 1.5-fold increase in standing crop biomass of aquatic invertebrates to carcass additions in the second year of our experiment. The consumption of benthic invertebrates by stream fishes increased 110–140% and 44–66% in carcass and analog streams in the same time frame, which may have masked invertebrate standing crop responses in years 3 and 4. Resident trout directly consumed 10.0–24.0 g·m-2·yr-1 of salmon carcass and \u3c1–11.0 g·m-2·yr-1 of analog material, which resulted in 1.2–2.9 g·m-2·yr-1 and 0.03–1.4 g·m-2·yr-1 of tissue produced. In addition, a feedback flux of terrestrial maggots to streams contributed 0.0–2.0 g·m-2·yr-1 to trout production. Overall, treatments increased annual trout production by 2–3 fold, though density and biomass were unaffected. Our results indicate the strength of bottom-up and top-down responses to subsidy additions was asymmetrical, with top-down forces masking bottom-up effects that required multiple years to manifest. The findings also highlight the need for nutrient mitigation programs to consider multiple pathways of energy and nutrient flow to account for the complex effects of salmon subsidies in stream-riparian ecosystems

    Texas Parks and Wildlife Department Webless Migratory Game Bird Strategic Plan

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    Texas Parks and Wildlife Department Small Game Program strategic plan for webless migratory birds such as doves for 2011-2015. It outlines the major species of webless migratory game birds that are hunted in Texas and their current conservation and hunting statuses and plans to maintain bird populations and continue to provide recreational hunting opportunities

    2022 fox squirrel sighting survey summary

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    Due to concern about the population status of the fox squirrel across the Southeast, a fox squirrel sighting survey was initiated in South Carolina in 1989 to document distribution, habitat preference and relative abundance for this species. This report details information from the 2022 survey
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