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Author : Neil B. Armantrout
Publisher : Unknown
Page : 428 pages
File Size : 47,8 Mb
Release : 1982
Category : Aquatic ecology
ISBN : UCSD:31822000482893
Author : Armantrout, Neil B.,American Fisheries Society. Western Division
Publisher : Unknown
Page : 376 pages
File Size : 44,6 Mb
Release : 1982
Category : Electronic
ISBN : OCLC:795601475
Author : F. Richard Hauer,Gary Lamberti
Publisher : Academic Press
Page : 894 pages
File Size : 49,5 Mb
Release : 2011-04-27
Category : Science
ISBN : 9780080547435
Methods in Stream Ecology, Second Edition, provides a complete series of field and laboratory protocols in stream ecology that are ideal for teaching or conducting research. This updated edition reflects recent advances in the technology associated with ecological assessment of streams, including remote sensing. In addition, the relationship between stream flow and alluviation has been added, and a new chapter on riparian zones is also included. The book features exercises in each chapter; detailed instructions, illustrations, formulae, and data sheets for in-field research for students; and taxanomic keys to common stream invertebrates and algae. With a student-friendly price, this book is key for all students and researchers in stream and freshwater ecology, freshwater biology, marine ecology, and river ecology. This text is also supportive as a supplementary text for courses in watershed ecology/science, hydrology, fluvial geomorphology, and landscape ecology. Exercises in each chapter Detailed instructions, illustrations, formulae, and data sheets for in-field research for students Taxanomic keys to common stream invertebrates and algae Link from Chapter 22: FISH COMMUNITY COMPOSITION to an interactive program for assessing and modeling fish numbers
Author : W.D.N. Busch
Publisher : CRC Press
Page : 238 pages
File Size : 44,8 Mb
Release : 2018-01-18
Category : Science
ISBN : 9781351085595
In the context of freshwater fisheries changing their strategies from the regulation of harvest and the enhancement of populations, to the creation and protection of habitats and the management of ecosystems, moves toward establishing an aquatic habitat classification system. Eight papers, from the February 1988 Symposium on the Classification and Inventory of Great Lakes Aquatic Habitats (the last in a series of Great Lakes Symposia), propose various classification approaches, most using a limited number of physical, chemical, and/or biological variables to produce some form of index. They also include overviews and summaries of the classification process.
Author : Anonim
Publisher : Unknown
Page : 676 pages
File Size : 53,6 Mb
Release : 1988
Category : Fish-culture
ISBN : UIUC:30112010268677
Author : Anonim
Publisher : Unknown
Page : 234 pages
File Size : 48,5 Mb
Release : 1988
Category : Fish culture
ISBN : MINN:30000001556368
Author : Michael D. Marcus
Publisher : Unknown
Page : 92 pages
File Size : 43,9 Mb
Release : 1990
Category : Salmon
ISBN : MINN:31951D03001086Q
Author : Kurt D. Fausch
Publisher : Unknown
Page : 60 pages
File Size : 49,8 Mb
Release : 1988
Category : Fish communities
ISBN : MINN:31951D02974992R
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.
Author : Anonim
Publisher : Unknown
Page : 546 pages
File Size : 42,9 Mb
Release : 1985
Category : Forests and forestry
ISBN : CHI:82605389
Author : Anonim
Publisher : Unknown
Page : 760 pages
File Size : 42,9 Mb
Release : 1987
Category : Forests and forestry
ISBN : STANFORD:36105005944868
Author : Anonim
Publisher : Unknown
Page : 154 pages
File Size : 43,7 Mb
Release : 1991
Category : Hydroelectric power plants
ISBN : UCSD:31822020596029
Author : Anonim
Publisher : Unknown
Page : 104 pages
File Size : 47,8 Mb
Release : 1989
Category : Forest management
ISBN : MINN:31951D002816399
Author : Anonim
Publisher : Unknown
Page : 244 pages
File Size : 43,9 Mb
Release : 1984
Category : Forests and forestry
ISBN : UIUC:30112104058802
Author : Wayne S. Davis,Thomas P. Simon
Publisher : CRC Press
Page : 434 pages
File Size : 40,5 Mb
Release : 1995-03-03
Category : Technology & Engineering
ISBN : 0873718941
Biological Assessment and Criteria presents a state-of-the-art overview of the applications of biological assessments and biocriteria for water quality management in fresh waters. The book presents case studies which illustrate how bioassessment has been used to identify and diagnose water quality problems. It also provides examples of the use of qualitative and quantitative biocriteria as regulatory tools to complement water quality criteria and standards. The first book to present the technical foundation, rationale, program and policy relevance, and legal basis for the most accurate tools used to assess freshwater natural resource and regulatory efforts, this book provides useful and timely information for water quality managers.
Author : David A. Koehler
Publisher : Unknown
Page : 376 pages
File Size : 47,9 Mb
Release : 2000
Category : Ecosystem management
ISBN : MINN:31951D03000053A
This annotated bibliography contains 1,905 citations from professional journals, symposia, workshops, proceedings, technical reports, and other sources. The intent of this compilation was to: (1) assemble, to the extent possible, all available and accessible publications relating to riparian management within a single source or document; (2) provide managers, field biologists, researchers, and others, a point of access for locating scientific literature relevent to their specific interest; and (3) provide, under one cover, a comprehensive collection of annotated publications that could dessiminate basic information relative to the status of our knowledge.