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Fish community changes in an exploited marine ecosystem : Newfoundland Southern Grand Bank and St. Pierre Bank, 1951-1995 /Casey, Jill M., January 2000 (has links)
Thesis (M.Sc.), Memorial University of Newfoundland, 2000. / Bibliography: leaves 63-70.
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Fish movement and assemblage dynamics in a Pacific Northwest riverscape /Baxter, Colden V. January 2002 (has links)
Thesis (Ph. D.)--Oregon State University, 2002. / Typescript (photocopy). Includes bibliographical references (leaves 163-174). Also available on the World Wide Web.
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Movement patterns and habitat associations of native and introduced catostomids in a tributary system of the Colorado RiverSweet, Diana E. January 2007 (has links)
Thesis (M.S.)--University of Wyoming, 2007. / Title from PDF title page (viewed on Nov. 13, 2008). Includes bibliographical references (p. 173-183).
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Spatial and seasonal patterns in community structure of tide-pool fishes in Hong Kong /Lam, Fung-ngai. January 2002 (has links)
Thesis (M. Phil.)--University of Hong Kong, 2002. / Includes bibliographical references (leaves 55-61).
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Fish and invertebrate abundance in relation to abiotic factors in the Missouri RiverHay, Christopher H. January 1900 (has links)
Thesis (Ph.D.)--University of Nebraska-Lincoln, 2006. / Title from title screen (site viewed on Feb. 6, 2007). PDF text: xii, 196 p. : ill., maps. UMI publication number: AAT 3220344. Includes bibliographical references. Also available in microfilm and microfiche format.
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Spatial and temporal characteristics of bottom-trawl fish assemblages of the continental shelf and upper slope of the Pacific Coast of the United States, 1977-1992Jay, Chadwick V. 25 April 1996 (has links)
Twenty-three bottom-trawl fish assemblages were identified from the relative biomass of
33 dominant species that occurred in the National Marine Fisheries Services' triennial
trawl surveys over the continental shelf and upper slope off California, Oregon, and
Washington from 1977 to 1992. The assemblages accounted for about 70% of the total
variation in species composition among 2,565 hauls. Although the assemblages persisted
over the 15-yr study period and occurred within broad geographic boundaries, some had
substantially different spatial distributions among surveys. The ability to differentiate
assemblages across five environmental variables (latitude, depth, surface and bottom
water temperatures, and surficial substrate) was low. The preponderance of hake-dominated
assemblages throughout the study area suggests that Pacific hake (Merluccius
productus) may play a large role in the dynamics of demersal fish communities off the
west coast of the United States. The same data were used to establish general features
regarding the abundance and distribution of the 33 dominant fish, and investigate
intersurvey regional variation in species composition. Flatfish were generally widespread
and at low density within areas of their occurrence. In contrast, rockfish were
comparatively less widespread, and were at higher density within areas of their
occurrence. Pacific hake, spiny dogfish, and sablefish were both widespread and
occurred in high density. The greatest amount of variation in species composition
occurred in the shallow shelf region off California, and the shallow and deep regions
between Cape Mendocino and Cape Blanco. These regions corresponded to areas with
the greatest amount of annual variation in upwelling. Contrary to upwelling, intersurvey
variation in surface temperature did not appear to correspond to variation in species
composition, but there was an unanticipated negative correlation between variation in
bottom temperature and variation in species composition. Species composition was
influenced in most regions by Pacific hake, spiny dogfish, and sablefish. A conceptual
model was developed to explore the relationship between regional changes in a species'
biomass, incidence, and density, and their potential affect on species composition.
Empirical examination of the model was difficult. Five of six flatfish species (Pacific
sanddab, rex sole, Pacific halibut, Dover sole, and English sole) exhibited a significant
positive linear relationship between incidence and log-transformed biomass which is
consistent with density-dependent habitat selection. There was evidence (albeit weak)
from patterns in the occupancy of substrate types by these flatfish, that marginal habitats
are associated with areas of mud for Pacific sanddab and areas of sand for rex sole,
Pacific halibut, and Dover sole. / Graduation date: 1997
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The role of migration in community dynamics in Beaver Lake BasinArmichardy, Daniel J., January 2008 (has links)
Thesis (M.S.)--Northern Michigan University, 2008. / Bibliography: leaves 85-96.
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Size-based dynamics of a demersal fish community : modeling fish-fisheries interactions /Martínez Murillo, María de las Nieves, January 2003 (has links)
Thesis (Ph.D.)--Memorial University of Newfoundland, 2004. / Bibliography: leaves 170-184.
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Centrarchid assemblages in oxbow lakes of the Mississippi Alluvial Valley with perspectives for fisheries managementAlfermann, Ted Joseph 06 August 2011 (has links)
Surrounding land-use and in-lake data were collected to determine environmental variables influential in structuring centrarchid assemblages in oxbow lakes of the Mississippi Alluvial Valley (MAV) and to suggest environmental manipulation strategies that may improve the fisheries of these systems. I sampled 53 oxbow lakes using boat electrofishing and land-use data were summarized using ArcView GIS. Non-metric Multidimensional Scaling separated centrarchids according to water quality tolerance. Centrarchid composition was related to land-use, water clarity, maximum depth, connectivity, primary productivity, and physicochemistry as determined by Canonical Analysis of Principal Coordinates. Canonical Correspondence Analysis rejected the null hypothesis of no relationship between land-use and centrarchid proportional composition. Environmental variables were related significantly to centrarchid composition. Based on these data, a general fisheries management plan for oxbow lakes of the MAV was proposed.
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Evaluating hydrologic controls on fish and macroinvertebrate communities in Ohio's western Allegheny PlateauCarlson, William E. January 2006 (has links)
Thesis (M.S.)--Ohio University, June, 2006. / Title from PDF t.p. Includes bibliographical references (p. 97-104)
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