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Friday, July 10, 2020 | History

2 edition of Lake trout studies in the AYK region, 1997 found in the catalog.

Lake trout studies in the AYK region, 1997

Thomas Theodore Taube

Lake trout studies in the AYK region, 1997

by Thomas Theodore Taube

  • 140 Want to read
  • 13 Currently reading

Published by Alaska Dept. of Fish and Game, Division of Sport Fish, Research and Technical Services in Anchorage .
Written in English

    Subjects:
  • Lake trout -- Alaska -- Interior Region -- Statistics.,
  • Fishing -- Alaska -- Interior Region -- Statistics.,
  • Fish populations -- Alaska -- Interior Region -- Measurement.

  • About the Edition

    Standardized gillnet (Index fishing) and hook and line sampling were used in July and August, 1997, as capture methods for lake trout Salvelinus namaycush in Itkillik Lake to estimate the abundance, length composition, and CPUE. A two-sample mark-recapture experiment produced a July 1997 lake trout (> 315 mm) abundance estimate of 8,217 (SE = 1170) with density of 19.6 fish per ha. Lake trout in the 425-450 mm length category were most frequent in the sample, with lengths ranging from 168 to 881 mm. Ages of 45 lake trout ranged from three to 15 years. The CPUE for Index fishing averaged 3.86 fish/net h. An age validation study comparing scales, otoliths, and opercular bones from a cohort of lake trout stocked in 1991 was conducted. The proportion of age structures which reflected the true age was 0.66 (SE = 0.036) for scales and 0.60 (SE = 0.035) for otoliths.

    Edition Notes

    Other titlesLake trout studies in the Arctic-Yukon-Kuskokwim region, 1997.
    Statementby Thomas T. Taube, Klaus G. Wuttig and Lisa Stuby.
    SeriesFishery data series -- no. 98-24.
    ContributionsWuttig, Klaus G., Stuby, Lisa., Alaska. Division of Sport Fish. Statewide Research and Technical Services Unit.
    Classifications
    LC ClassificationsSH11 .A7542 no.98-24
    The Physical Object
    Paginationii, 38 p. :
    Number of Pages38
    ID Numbers
    Open LibraryOL17697441M

    The Fishery Management Reports series was established in by the Division of Sport Fish for the publication of an overview of management activities and goals in a. systems (e.g., lake trout and lake whitefish; Healey ; TTWG ), or on standard reference points such as F (Deriso ) which is used as a surrogate for F MSY. (e.g., Lake Erie walleye—see case study 3 below). In recent years, Great Lakes fishery man-agers have become interested in applying techniques for assessing the risk of manage-.

    The rainbow trout (Oncorhynchus mykiss) is a trout and species of salmonid native to cold-water tributaries of the Pacific Ocean in Asia and North America. The steelhead (sometimes called "steelhead trout") is an anadromous (sea-run) form of the coastal rainbow trout (O. m. irideus) or Columbia River redband trout (O. m. gairdneri) that usually returns to fresh water to spawn after living two. Trout Lake, Washington. 1 person recommended 2 places. Joanna Toleno Turner shared a Page. Yesterday at AM. Masks for everyone!! Please support Northshore's effort to provide masks for the community. Northshore Community Masks. Join us in making and providing cloth masks to patients, organizations and our community. Drop off any style.

      An annual netting program started in to remove lake trout from the upper lake to improve survival rates of westslope cutthroats and bull trout. The success of bringing back the kokanee fishery. and Ihssen ; Figure 1). Lean lake trout have a streamlined shape and inhabit inshore waters «70 m). Lean lake trout spawn in shallow near-shore waters «18 m) during the months of Oc-tober and November (Goode ). Siscowet lake trout are characterized by a robust body and higher body fat content and inhabit deeper offshore wa-.


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Lake trout studies in the AYK region, 1997 by Thomas Theodore Taube Download PDF EPUB FB2

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Boreal Shield Watersheds: Lake Trout Ecosystems in a Changing Environment (Integrative Studies in Water Management & Land Deve Book 2) - Kindle edition by Ryder, R.A., Gunn, John, Steedman, Robert John, Ryder, Richard.

Download it once and read it on your Kindle device, PC, phones or tablets. Use features like bookmarks, note taking and highlighting while reading Boreal Shield Watersheds: Lake Price: $ Fishing the Great Lakes is a sweeping history of the destruction of the once-abundant fisheries of the great "inland seas" that lie between the United States and Canada.

Though lake trout, whitefish, freshwater herring, and sturgeon were still teeming as late asMargaret Bogue documents here how overfishing, pollution, political squabbling, poor public policies, and commercial. This timely book examines the sustainability of 1997 book fisheries in the Arctic-Yukon-Kuskokwim (AYK) region of Alaska.

With more than fifty chapters, the book assesses the ecological processes. Since the retreat of the glaci years ago, the top native predator in Adirondack waters has been lake trout (Salvelinus namaycush). The large, slow-growing fish inhabits the coldest, deepest lakes of the Adirondacks.

Its species name, namaycush, is believed to be an Algonquin term for. ships for lake trout caught in gill nets (Hansen et al. The. –mm TL range corresponds to % of all lake trout. studies of lake trout elsewhere in North America will be useful.

losing lake trout populations due to habitat loss than deeper lakes (Ryan and Marshall ). A comparison of the maximum depth of lake trout lakes was used to identify high risk lakes. Lake trout were not found in Atikokan Area lakes with a maximum depth of less than 10 m. End of. The siscowet Salvelinus namaycush is a deepwater morphotype of lake trout in Lake Superior.

As part of a standardized lake-wide survey in to assess siscowet populations, bottom-set, multi-mesh gill nets were fished at m depth intervals from near shore areas to the deepest waters in south-central Lake Superior. The congener-specific half-lives in Lake Trout showed lake-specific differences.

For example, the penta dioxins/furans declined in Lakes Ontario and Huron much faster than in Lake Superior (4–7 vs. 12–19 years), while the corresponding declines in the tetra dioxins/furans were either similar or slower (5–19 vs.

5–10 years) ().The higher concentrations of 2,3,7,8-substituted dioxins. Introduction. Although lake trout (Salvelinus namaycush) are commonly thought to be restricted to freshwater habitats, there are sporadic records of this species inhabiting brackish, coastal environments in the Canadian Arctic during summer months (reviewed in Martin and Olver ).Walters () reported that members of the Canadian Arctic Expedition (–) found lake trout in river.

Lake morphometry and water chemistry were analyzed as predictors of brook trout and total salmonid biomass (brook trout, Atlantic salmon and Arctic char) in water bodies of Newfoundland.

Lake morphometric variables included surface area, depth, perimeter and catchment area while water chemistry variables included conductivity/TDS and total Phosphorus.

The broadly used Morpho. Lahontan cutthroat were abundant in the lake inwith only an occasional Lake Trout reported. Bythe cutthroat has virtually disappeared, and byLake Trout comprised 70% of angler catch in the lake (Cordone and Frantz ).

Stocked Lake Trout have replaced native cutthroats in deep Rocky Mountain lakes (Benson et al. Coincidentally, that world record Lake Trout was also caught in Great Bear Lake, the same place the fish at the center of this story was caught.

An 83 pound Lake Trout was pulled out of Great Bear Lake, a fish that would’ve broken the existing world record by a whopping 11 pounds. In addition, lake whitefish, lake herring, yellow perch, walleye, chubs, smelt, lake trout, channel catfish, and carp all have commercial harvests.

Inthe commercial harvest of lake whitefish was > 21 million pounds, and both the walleye and smelt harvests were > 7 million pounds, with a total harvest value of > $44 million (Kinnunen The Fishery Management Reports series was established in by the Division of Sport Fish for the publication of an overview of management activities and goals in a specific geographic area, and became a joint divisional series in.

Native lake trout and introduced Chinook salmon, coho salmon, steelhead, and brown trout are major predators in Lake Michigan’s complex ecosystem and collectively support a valuable recreational fishery, but declines in their primary prey, alewife, have raised ecological and management concerns about competition and prey allocation.

the mid ’s (Royce ). The majority of lake trout in Otsego Lake spawn from October 20 to November 1, when temperatures reach o C. Survival of wild lake trout in Otsego Lake appears to produce two thirds of the total population of mature lake trout in Otsego Lake.

The spawning environment is marginal for lake trout; levels of silt. Study site, sample collection and stocking. A total of adult lake trout were sampled in 72 lakes from 10 independently managed and stocked administrative regions across the province of Québec, Canada (Fig.

(Fig.1; 1; Table Table1, 1, Table S4).An exception was the Chaudière-Appalaches and Estrie regions, which were both stocked using the same broodstocks. Lake trout (Salvelinus namaycush) exhibit substantial life history variation range-wide and at a local study addresses two hypotheses that have been proposed to account for this: (i) over the zoogeographic range, climatic conditions are associated with life history differences; and (ii) within smaller geographic regions, physical lake attributes are associated with life history.

Although a drop of lake water may contain 1 million bacteria cells and 10 million viruses, only since has there been a long-term study of the lakes' micro-organisms. Between and more than new species have been discovered.

Flora. See also: Flora of the Great Lakes region, and Index: Trees of the Great Lakes region. Lake trout Salvelinus namaycush is a slow-growing, late-maturing, cold-water-adapted species whose native distribution is described by the glaciated regions of North America.

Southwestern Alaska, the western limit of the species range, has undergone repeated episodes of glacial advance and retreat. In this study, lake trout were sampled from 15 lakes in six drainages on or near Togiak National.Lake trout are actually quite rare.

They are native only to the northern parts of North America, mostly just in Canada. Algoma Country is blessed with abundant numbers of Lake Trout. You can fish for them in both Lake Superior and Lake Ontario plus hundreds of our inland lakes support healthy populations. There are 4 different forms of lake trout (See: lake trout facts) in Lake Superior that we fish for in the Stannard Rock Lighthouse area and in Bete Grise (just north of Keweenaw Bay.) One is the Siscowet, which is about 60 to 70% fat content and they live in the deep ( feet and deeper) parts of the lake.