Author: T. F. NalepaPublisher:
ISBN:
Category : Benthic animals
Languages : en
Pages : 41
Book Description
Abundance and Biomass of Benthic Macroinvertebrates in Lake Michigan in 2015, with a Summary of Temporal Trends
Author: T. F. NalepaPublisher:
ISBN:
Category : Benthic animals
Languages : en
Pages : 41
Book Description
Food webs and stable isotopes, volume II
Author: Jason NewtonPublisher: Frontiers Media SA
ISBN: 2832533922
Category : Science
Languages : en
Pages : 212
Book Description
Lake-wide Benthic Surveys in Lake Michigan in 1994-95, 2000, 2005, and 2010
Author: T. F. NalepaPublisher:
ISBN:
Category : Benthos
Languages : en
Pages : 21
Book Description
"This technical report provides basic results of lake-wide, benthic surveys conducted in Lake Michigan in 1994-1995, 2000, 2005, and 2010 to assess temporal trends in the native amphipod Diporeia spp., the zebra mussel (Dreissena polymorpha), and the quagga mussel (Dreissena rostriformis bugensis). These surveys are an expansion of a continuing, monitoring program in the southern basin of the lake conducted by the Great Lakes Environmental Research Laboratory (GLERL) that examines trends in the abundance and composition of the entire macroinvertebrate community (Nalepa 1987, Nalepa et al. 1998). The GLERL program was initiated in 1980 with the original intent of assessing the response of the benthic community to phosphorus abatement efforts in the mid-1970s (Nalepa 1987). However, after D. polymorpha became established in the southwestern portion of the lake in 1989 (Marsden et al. 1993), the monitoring program detected several dramatic changes in the benthic community in the early 1990s. Diporeia began to systematically disappear, and D. polymorpha rapidly expanded and soon became dominant in the nearshore region (Nalepa et al. 1998). To determine if changes in the southern basin were also occurring throughout the lake, the monitoring program was greatly expanded in 1994-1995. Benthic sampling in these two years was conducted jointly with several other sampling programs in Lake Michigan: Environmental Monitoring and Assessment (EMAP) and Lake Michigan Mass Balance (LMMB). After 1994-1995, lakewide monitoring of Diporeia and Dreissena populations continued at 5-year intervals (i.e., 2000, 2005, and 2010) as part of a regular monitoring program at GLERL that supplemented the continued effort in the southern basin"--Introduction.
The Macro- and Meiobenthos of Southeastern Lake Michigan Near the Mouth of the Grand River, 1976-77
Author: T. F. NalepaPublisher:
ISBN:
Category : Benthos
Languages : en
Pages : 18
Book Description
This report presents in detail the methods and basic results of a benthic survey designed to determine the abundance and biomass of both the macro- and meiobenthos of southeastern Lake Michigan. Sediment cores were collected at monthly intervals from May to November 1976 and 1977 by diverse users using SCUBA. Sampling depths were 11, 17, and 23 m. Organisms retained in screens with aperture openings of 595 [mu]m, 106 [mu]m and 45 [mu]m were counted and identified to the lowest taxonomic level possible. Results are presented as a series of tables giving the following data: (1) mean number of organisms per square meter, (2) actual number of organisms per replicate core, (3) mean-dry weight biomass in grams per square meter, (4) actual dry weight per replicate core and (5) vertical distribution of organisms per replicate core (1976 only).
An Analysis of the Percentage Composition and Abundance of Benthic Macroinvertebrates in Lake Michigan Adjacent to the Ludington Pumped Storage Power Plant, 1972 - 1976
Author: Walter G. DuffyPublisher:
ISBN:
Category : Freshwater invertebrates
Languages : en
Pages : 97
Book Description
Spatial and Temporal Distribution of Benthic Macroinvertebrates and Sediments Collected in the Vicinity of the J.H. Campbell Plant, Eastern Lake Michigan, 1979
Author: Michael H. WinnellPublisher:
ISBN:
Category : Benthos
Languages : en
Pages : 142
Book Description
Spatial and Temporal Distribution of Benthic Macroinvertebrates and Sediments Collected in the Vicinity of the J.H. Campbell Plant, Eastern Lake Michigan, 1980
Author: Michael H. WinnellPublisher:
ISBN:
Category : Benthos
Languages : en
Pages : 110
Book Description
The Distribution and Abundance of Benthic Invertebrates in Green Bay, Lake Michigan, with Special Reference to Long-term Water Quality Changes
Author: Bruce E. MarkertPublisher:
ISBN:
Category : Aquatic invertebrates
Languages : en
Pages : 178
Book Description
Spatial and Temporal Distribution of Benthic Macroinvertebrates and Sediments Collected in the Vicinity of the J.H. Campbell Plant, Eastern Lake Michigan, 1978
Author: Michael H. WinnellPublisher:
ISBN:
Category : Benthos
Languages : en
Pages : 199
Book Description
Author: