Download or read book Supporting Data for the Habitat based Population Models Developed for Northern Pike Smallmouth Bass Largemouth Bass and Yellow Perch written by and published by . This book was released on 2003 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Supporting Data for the Habitat based Population Models Developed for Northern Pike Smallmouth Bass Largemouth Bass and Yellow Perch written by Canada. Dept. of Fisheries and Oceans and published by [Burlington, Ont.] : Fisheries and Oceans Canada. This book was released on 2005 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Habitat Suitability Modelling of Northern Pike Esox Lucius written by Rahmat Zarkami and published by LAP Lambert Academic Publishing. This book was released on 2012-05 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: Over the past half-century, habitat changes have drastically affected production of northern pike in all over the world. Pike are keystone predators responsible for determining the structure of certain fish community assemblages. Therefore, predicting their habitat needs is critical for river management. This book determines the appropriate variables and ecosystem processes by using a set of data driven models to predict habitat suitability of pike in rivers. To achieve this, the use of suitable ecological modelling methods can be very important to support river management and water policy because a better interpretation of the river status can be possible, the causes of the status of a river can be detected and assessment methods can be optimised. Models can allow for calculating the effect of future river restoration actions on aquatic ecosystems and supporting the selection of the most sustainable options. They can also help to find the major gaps in our knowledge of river systems and help to set-up cost effective monitoring programmes. Based on the developed model, focusing on the structural-habitat variables would be the main priority for the survival of pike population.
Download or read book An Analysis Technique for Mineral Resource Planning written by William C. Brice and published by . This book was released on 1981 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1981 with total page 502 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population Development of Re introduced Smallmouth Bass and Yellow Perch in Nebish Lake written by and published by . This book was released on 1982 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Habitat Suitability Index Models written by Larry R. Aggus and published by . This book was released on 1982 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Habitat Suitability Index Models written by Peter D. Inskip and published by . This book was released on 1982 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Models that Predict Standing Crop of Stream Fish from Habitat Variables written by Kurt D. Fausch and published by . This book was released on 1988 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: We reviewed mathematical models that predict standing crop of stream fish (number or biomass per unit area or length of stream) from measurable habitat variables and classified them by the types of independent habitat variables found significant, by mathematical structure, and by model quality. Habitat variables were of three types and were measured on different scales in relation to stream channels: variables of drainage basins were measured on the coarsest scale from topographic maps; channel-morphometry and flow variables were measured in the field along transects perpendicular to flow; and habitat-structure, biological, physical, and chemical variables were measured on the finest scale in the field. We grouped the 99 reviewed models by the types of independent variables found significant during model development: (A) primarily drainage basin (5 models), (8) primarily channel morphometry and flow (16 models), (C) primarily habitat structure, biological, physical, and chemical (25 models), (D) a combination of several types of variables (39 models), and (E) tests of weighted usable area as a habitat model (14 models. Most models were linear or multiple linear regressions, or correlations, but a few were curvilinear functions (exponential or power). Some used multivariate techniques (principal components or factor analysis), and some combined independent variables into one or more indices. We judged model quality based on simple criteria of precision and generality: coefficient of determination, sample size, and degrees of freedom. Most models were based on data sets of fewer than 20 observations and, thus, also had fewer than 20 degrees of freedom. Most models with coefficients of determination of greater than 0.75 had fewer than 20 degrees of freedom, which led us to conclude that relatively precise models often lacked generality. We found that sound statistical procedures were often overlooked or were minimized during development of many models. Frequent problems were too small a sample size, possible bias caused by error in measuring habitat variables, using poor methods for choosing the best model, not testing models, using models based on observational data to predict standing crop, and making unrealistic assumptions about capture probabilities when estimating standing crop. The major biological assumptionthat the fish population was limited by habitat rather than fishing mortality, interspecific competition, or predationusually was not addressed. We found five main ways stream-fish-habitat models are used in fishery management. To be useful for analyzing land management alternatives, models must include variables affected by management and be specific for a homogeneous area of land.
Download or read book Spatially explicit Habitat Characterization Suitability Analysis Verification and Modelling of the Yellow Perch Perca Flavescens Mitchell 1814 Population in Long Point Bay Lake Erie microform written by Susan Elisabeth Doka and published by Library and Archives Canada = Bibliothèque et Archives Canada. This book was released on 2004 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: Different approaches were used to characterize, assess, test and model the fish-habitat interactions of yellow perch in Long Point Bay. Chapter 1 describes the methodologies for explicitly characterizing spatial and temporal habitat through mapping and modelling. Chapter 2 connects habitat and ontogenetic niche shifts in perch life history, with the aim of determining suitable habitat availability for the Long Point Bay perch population. Habitat suitability indices and models were used to map and identify the areas of suitable habitat, including thermal habitat. Chapter 3 compares a known distribution of yellow perch larvae with HSI predictions of habitat suitability as a validation exercise. Abundance and size distributions from the survey were compared to thermal and HSI predictions of suitable habitat to test for correspondence. The relationship between food availability and habitat characteristics, especially vegetation, were also tested. A model was developed in Chapter 4 that concentrated on the first year of life and the effect of consecutive constraints on early life stages with different habitat requirements. The purpose of the model was to compare the potential growth and survival of consecutive life stages in a spatially explicit manner when different habitat-based rules are imposed. The results highlight the importance of life history theory and knowledge of mechanisms used in habitat selection for determining limits to fish production.
Download or read book Effects of Special Harvest Regulations on Largemouth Bass and Yellow Perch in Spruce Lake written by Steven Newman and published by . This book was released on 1994 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Habitat Suitability Index Models written by Mark F. Cook and published by . This book was released on 1987 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Population Dynamics of Smallmouth Bass Micropterus Dolomieu in Response to Habitat Supply written by Cindy Chu and published by . This book was released on 2001 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A smallmouth bass habitat model was developed to estimate how changes in habitat may affect smallmouth bass populations. Habitat characteristics such as mean annual air temperature and substrate were used to determine the spatial distribution of nests, juveniles and adults throughout a lake. Growth is density-dependent for all life stages. Mortality is size-dependent in the young-of-the-year (YOY) but is set at a constant annual rate for older fish. Sensitivity analyses revealed that increases in mean annual air temperature, total dissolved solids concentration and the area available for nesting increased the density of the simulated population. Furthermore, a YOY bottleneck exists in smallmouth bass populations and the nesting habitat appears to be more important than the juvenile/adult habitat. Model predictions were compared to data from Lake Opeongo, Ontario and Long Point Bay, Lake Erie. This revealed that the model can be applied to estimate how habitat changes influence fish density but requires modification before it can be used to predict the spatial distribution of nests and fish within a lake.
Download or read book Habitat Suitability Index Models written by Peter D. Inskip and published by . This book was released on 1982 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Quantitative Population Dynamics written by Douglas George Chapman and published by International Co-Operative Publishing House. This book was released on 1981 with total page 334 pages. Available in PDF, EPUB and Kindle. Book excerpt: Genetic adaptation and models of population dynamics. The habitat equation: a useful concept in population modeling. Exploitative competition in transient habitat patches. Population adaptation to a 'Noisy'environment: stochastic analogs of some deterministic models. Correlation and spectral analyses of the dynamics of a controlled rotifer population. Dinamic equilibria of helminthic infections?. A population model with two delays. Stability of model systems describing prey-predator communities. Surplus yield models od fisheries management. An approach to analyzing age data. An age structure model of yellow perch in western Lake Erie. The use of leslie-type age-structure models for the Pacific halibut population.
Download or read book Development and Application of an Individual based Population Model for First year Largemouth Bass written by Anett S. Trebitz and published by . This book was released on 1989 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synopsis of Biological Data on the Walleye written by Peter J. Colby and published by Bernan Press(PA). This book was released on 1979 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
