Author: Barry S. PaynePublisher:
ISBN:
Category : Freshwater mussels
Languages : en
Pages : 52
Book Description
An Evaluation of Freshwater Mussels in the Lower Ohio River in Relation to the Olmsted Locks and Dam Project
Author: Barry S. PaynePublisher:
ISBN:
Category : Freshwater mussels
Languages : en
Pages : 52
Book Description
An Evaluation of Freshwater Mussels in the Lower Ohio River in Relation to the Olmsted Locks and Dam Project: 1998 Studies
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 49
Book Description
Surveys were conducted in August 1998 to assess community characteristics, population demography of dominant species, status of endangered species, and characteristics of nonindigenous populations of freshwater bivalves in the lower Ohio River (LOR). Data will be used to analyze ecological effects of construction and operation of a new lock and dam at River Mile (RM) 964.4. Primary focus has been on a prominent mussel bed just downstream of the project at Olmsted, Illinois. Studies have shown that this mussel bed extends approximately from elevation 278 ft nearshore to 267 ft farshore. Moderate (20-50 individuals per square meter) or high density (>50 individuals per square meter) assemblages of mussels tend to be at more central elevations on the bed from approximately RM 966.4 to 968.3.
An Evaluation of Freshwater Mussels in the Lower Ohio River in Relation to the Olmsted Locks and Dam Project: 1998 Studies
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Surveys were conducted in August 1998 to assess community characteristics, population demography of dominant species, status of endangered species, and characteristics of nonindigenous populations of freshwater bivalves in the lower Ohio River (LOR). Data will be used to analyze ecological effects of construction and operation of a new lock and dam at River Mile (RM) 964.4. Primary focus has been on a prominent mussel bed just downstream of the project at Olmsted, Illinois. Studies have shown that this mussel bed extends approximately from elevation 278 ft nearshore to 267 ft farshore. Moderate (20-50 individuals per square meter) or high density (>50 individuals per square meter) assemblages of mussels tend to be at more central elevations on the bed from approximately RM 966.4 to 968.3.
An Evaluation of Freshwater Mussels in the Lower Ohio River in Relation to the Olmstead Locks and Dam Project
Author: Barry S. PaynePublisher:
ISBN:
Category : Freshwater mussels
Languages : en
Pages : 80
Book Description
An Analysis of Freshwater Mussels (Unionidae) in the Lower Ohio River at Two Beds Near Olmsted, Illinois
Author: Barry S. PaynePublisher:
ISBN:
Category : Freshwater mussels
Languages : en
Pages : 132
Book Description
An Evaluation of Freshwater Mussels in the Lower Ohio River in Relation to the Olmstead Locks and Dam Project
Author: Barry S. PaynePublisher:
ISBN:
Category : Freshwater mussels
Languages : en
Pages : 80
Book Description
Freshwater Mussels in the Lower Ohio River in Relation to the Olmsted Locks and Dam Project: Update Through 2001 Studies
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Surveys were conducted in the summers of 2000 and 2001 to assess community characteristics, population demography of dominant species, status of endangered species, and characteristics of nonindigenous populations of freshwater bivalves in the lower Ohio River. Data will be used to analyze ecological effects of construction and operation of a new lock and dam at River Mile (RM) 964.4. Primary focus has been on a prominent mussel bed just downstream of the project at Olmsted, IL. Studies have shown that this mussel bed extends approximately from elevation 278 ft nearshore to 267 ft farshore. Moderate (20 to 50 individuals/sq m) or high density (>50 individuals/sq m) assemblages of mussels tend to be located at more central elevations on the bed from approximately RM 966.4 to 968.3. The downstream and farshore limits of the mussel bed tend to be less distinct than the nearshore and upstream limits. The community downstream of the project is extremely dominated by Fusconaia ebena. A mussel bed being monitored upstream of the project, at RM 957 near Post Creek, is clearly dominated by this species, but much less heavily than at Olmsted. Also, the abundance of F. ebena is higher farshore than nearshore at the Post Creek site. Communities at both Olmsted and Post Creek have been resilient to long-term occurrence (since approximately 1960) of the Asiatic clam, Corbicula fluminea, and more recent occurrence of the zebra mussel, Dreissena polymorpha. Both mussel beds are characterized by extreme dominance of a few year classes (especially 1981, 1990, and 1998) of the dominant species. Rapid spring rises in discharge from unseasonally low values occurred in combination with rising water temperatures in spring of all three good recruitment years. These conditions may trigger spawning runs by F. ebena's host fish, Alosa chrysochloris (skipjack herring).
Status of Freshwater Mussels in the Lower Ohio River in Relation to the Olmsted Locks and Dam Project: 1999 Studies
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 48
Book Description
Surveys were conducted in late July and early August 1999 to assess community characteristics, population demography of dominant species, status of endangered species, and characteristics of nonindigenous populations of freshwater bivalves in the lower Ohio River (LOR). Data will be used to analyze ecological effects of construction and operation of a new lock and dam at River Mile (RM) 964.4. Primary focus has been on a prominent mussel bed just downstream of the project at Olmsted, IL. Studies have shown that this mussel bed extends approximately from elevation 84.7 m (278 ft) nearshore to 69.2 m (267 ft) 2 2 farshore (elevations referred to mean seal level). Moderate- (20-50 individuals sq m) or high- (> 50 individuals sq m) density assemblages of mussels tend to occur at more central elevations on the bed from approximately RM 966.4 to 968.3. The downstream and farshore limits of the mussel bed tend to be less distinct than the nearshore and upstream limits. The community downstream of the project is extremely dominated by Fusconaia ebena. A mussel bed being monitored upstream of the project, at RM 957 near Post Creek, is clearly dominated by this species, but much less heavily than at Olmsted. Also, the abundance of F. ebena is higher farshore than nearshore at the Post Creek site. Communities at both Olmsted and Post Creek have been resilient to long-term occurrence (since approximately 1960) of the Asiatic clam, Corbicula fluminea, and more recent occurrence of the zebra mussel, Dreissena polymorpha. Both mussel beds are characterized by extreme dominance of just two year classes, 1981 and 1990, of the dominant species. Demographically complete sampling of F. ebena (Lea) at Olmsted was conducted from 1983 through 1999. Dominance of the 1981 and 1990 cohorts allowed length-to-age relationships to be estimated directly from length-frequency histograms. Two linear relationships adequately described growth rates from ages 2 through 17 years.
An Analysis of Freshwater Mussels (Unionidae) in the Upper Ohio River Near Huntington, West Virginia
Author: Andrew C. MillerPublisher:
ISBN:
Category : Freshwater mussels
Languages : en
Pages : 80
Book Description
Author: