Evaluating the Current Status of American Shad Stocks in Three Virginia Rivers
نویسندگان
چکیده
منابع مشابه
Macroscale Assessment of American Shad Spawning and Nursery Habitat in the Mattaponi and Pamunkey Rivers, Virginia
—Variation in habitat suitability can alter the growth and mortality of early life stages of fishes but is often difficult to measure, quantify, and apply to the entire system. We designed and tested habitat suitability index (HSI) models incorporating both proximate riverine parameters and surrounding landscape features as determinates of optimal spawning and nursery areas for American shad Al...
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—Throughout its native range, American shad Alosa sapidissima is thought to cease feeding during anadromous migration. We examined the feeding habits of American shad during spawning migration by documenting changes in diet composition and feeding that occur in mature fish in the York River, Virginia. American shad were collected prior to and after spawning at various locations on a gradient fr...
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—We estimated the variation in instantaneous rates of growth (G) and mortality (M) between intraannual cohorts of juvenile American shad Alosa sapidissima in the Pamunkey River, Virginia. The ages of juveniles captured by push net during the juvenile abundance index surveys in 1998 and 1999 were estimated by counting daily rings on the sagittal otoliths. Weight-at-age and abundance-at-age data ...
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این مطالعه به نقد و بررسی مفهوم اسطوره ی رویای امریکایی در سه نمایشنامه ی قرن بیستم امریکایی می پردازد، که این نمایشنامه ها عبارتند از: the iceman cometh (مرد یخین می آید) نوشته ی یوجین اونیل، 1940؛ desirea streetcar named (اتوبوسی به نام هوس) نوشته ی تنسی ویلیامز، 1947؛ و in the sun raisin a (انگور خشکیده در آفتاب) ، نوشته ی لورین هنزبری، 1958. هدف از این بررسی، ابتدا شناخت مفهوم رویای امری...
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ژورنال
عنوان ژورنال: Marine and Coastal Fisheries
سال: 2012
ISSN: 1942-5120
DOI: 10.1080/19425120.2012.675978