Author: David C. Beckett
Publisher:
ISBN:
Category :
Languages : en
Pages : 140
Book Description
This is a synoptic report describing water quality and composition and distribution of benthic macroinvertebrates, larval fishes, and fishes within a 62-mile reach of the lower Mississippi River. Major water quality differences among habitates were related to the presence or absence of current. Continual flow and high turbulence in lotic habitats such as the main channel and permanent secondary channel resulted in high suspended solids concentrations, high turbidites, low water transparencies, and low light penetration. Such physical characteristics resulted in low algal biomass, more stable pH and dissolved oxygen levels, and the constant availability of algal nutrients. In contrast, lentic areas, such as the abandoned channel at most river stages, and the dike fields at low flows, had relatively lower suspended solids and increased water clarity. This resulted in high algal biomass, higher pH readings, frequent dissolved oxygen supersaturation in surface waters, and nutrient depletion in slack-water areas.
Environmental and Water Quality Operational Studies. Water Quality, Macroinvertebrates, Larval Fishes, and Fishes of the Lower Mississippi River - A Synthesis
Author: David C. Beckett
Publisher:
ISBN:
Category :
Languages : en
Pages : 140
Book Description
This is a synoptic report describing water quality and composition and distribution of benthic macroinvertebrates, larval fishes, and fishes within a 62-mile reach of the lower Mississippi River. Major water quality differences among habitates were related to the presence or absence of current. Continual flow and high turbulence in lotic habitats such as the main channel and permanent secondary channel resulted in high suspended solids concentrations, high turbidites, low water transparencies, and low light penetration. Such physical characteristics resulted in low algal biomass, more stable pH and dissolved oxygen levels, and the constant availability of algal nutrients. In contrast, lentic areas, such as the abandoned channel at most river stages, and the dike fields at low flows, had relatively lower suspended solids and increased water clarity. This resulted in high algal biomass, higher pH readings, frequent dissolved oxygen supersaturation in surface waters, and nutrient depletion in slack-water areas.
Publisher:
ISBN:
Category :
Languages : en
Pages : 140
Book Description
This is a synoptic report describing water quality and composition and distribution of benthic macroinvertebrates, larval fishes, and fishes within a 62-mile reach of the lower Mississippi River. Major water quality differences among habitates were related to the presence or absence of current. Continual flow and high turbulence in lotic habitats such as the main channel and permanent secondary channel resulted in high suspended solids concentrations, high turbidites, low water transparencies, and low light penetration. Such physical characteristics resulted in low algal biomass, more stable pH and dissolved oxygen levels, and the constant availability of algal nutrients. In contrast, lentic areas, such as the abandoned channel at most river stages, and the dike fields at low flows, had relatively lower suspended solids and increased water clarity. This resulted in high algal biomass, higher pH readings, frequent dissolved oxygen supersaturation in surface waters, and nutrient depletion in slack-water areas.
Water Quality, Macroinvertebrates, Larval Fishes, and Fishes of the Lower Mississippi River--a Synthesis
Author: David C. Beckett
Publisher:
ISBN:
Category : Aquatic invertebrates
Languages : en
Pages : 146
Book Description
Publisher:
ISBN:
Category : Aquatic invertebrates
Languages : en
Pages : 146
Book Description
Selected Water Resources Abstracts
Technical Reports Awareness Circular : TRAC.
Management and Ecology of River Fisheries
Author: Ian G. Cowx
Publisher: John Wiley & Sons
ISBN: 0470695277
Category : Technology & Engineering
Languages : en
Pages : 458
Book Description
In this edited work, international experts in fisheries management and ecology review and appraise the status of river fisheries, assessment methodology, constraints on development, issues and options regarding management and associated problems in both temperate and tropical countries. Recommendations are made to improve management and an attempt is made to provide guidelines for formulating policy, for planning methodology and for evaluating future activities. Assessment of fish community structure and dynamics. Factors constraining stock recruitment. Fish habitat requirements. Instream flow needs. Impact of water resource schemes. Rehabilitation of river fisheries. Enhancement of fish stocks. Exploitation of stocks. Management of migratory fish stocks. Conservation of endangered species. Integrated river management. Bioeconomic issues. Legislation. Multinational management of rivers. Case studies.
Publisher: John Wiley & Sons
ISBN: 0470695277
Category : Technology & Engineering
Languages : en
Pages : 458
Book Description
In this edited work, international experts in fisheries management and ecology review and appraise the status of river fisheries, assessment methodology, constraints on development, issues and options regarding management and associated problems in both temperate and tropical countries. Recommendations are made to improve management and an attempt is made to provide guidelines for formulating policy, for planning methodology and for evaluating future activities. Assessment of fish community structure and dynamics. Factors constraining stock recruitment. Fish habitat requirements. Instream flow needs. Impact of water resource schemes. Rehabilitation of river fisheries. Enhancement of fish stocks. Exploitation of stocks. Management of migratory fish stocks. Conservation of endangered species. Integrated river management. Bioeconomic issues. Legislation. Multinational management of rivers. Case studies.
An Ecological Investigation of Revetted and Natural Bank Habitats in the Lower Mississippi River
Government Reports Annual Index
Author:
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 934
Book Description
Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Publisher:
ISBN:
Category : Research
Languages : en
Pages : 934
Book Description
Sections 1-2. Keyword Index.--Section 3. Personal author index.--Section 4. Corporate author index.-- Section 5. Contract/grant number index, NTIS order/report number index 1-E.--Section 6. NTIS order/report number index F-Z.
Selected Water Resources Abstracts
Government Reports Announcements & Index
List of Publications of the U.S. Army Engineer Waterways Experiment Station
Author: U.S. Army Engineer Waterways Experiment Station
Publisher:
ISBN:
Category : Coastal engineering
Languages : en
Pages : 408
Book Description
Publisher:
ISBN:
Category : Coastal engineering
Languages : en
Pages : 408
Book Description