Author: Glenn Stuart Carter
Publisher:
ISBN:
Category : Aquatic organisms
Languages : en
Pages : 80

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Book Description

Author: Cadie Olson
Publisher:
ISBN:
Category : Benthic ecology
Languages : en
Pages : 146

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Book Description
Southern Green Bay, Lake Michigan is one of the most productive ecosystems in the Great Lakes and has historically been subjected to a wide range of stressors, yet little is known about the current macroinvertebrate community structure. The most recent comprehensive assessment of benthic fauna was by Markert (1982) in 1978. The objectives of this project were to describe the current macroinvertebrate community, examine changes since 1978, and identify major environmental drivers of benthic community compositions. In total, 258 stations were surveyed, including 97 that were also sampled in 1978, 100 that were added to increase spatial resolution, and 61 that were subjected to periodic hypoxia. I collected 95 macroinvertebrate taxa in southern Green Bay with the community dominated by the eurytopic midge Chironomus and immature tubificid worms. Nonmetric multidimensional scaling (NMDS) ordination and indicator analyses distinguished contemporary and historical communities and revealed shifts in benthic macroinvertebrate structure; although oligochaete worms and chironomids remained dominant over time, Chironomus abundance increased and characterized the contemporary community, whereas the benthos were historically more diverse. The magnitude of temporal change varied regionally with larger differences concentrated in southern middle bay and the inner bay remaining comparable to 1978. Contemporary assemblages are driven primarily by productivity, substrate type, and hypoxia, according to NMDS ordinations. Regular benthic monitoring should continue to evaluate biological responses to environmental stressors and assess management actions.

Author:
Publisher:
ISBN:
Category : Environmental impact analysis
Languages : en
Pages : 89

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Book Description
"The National Oceanic and Atmospheric Administration (NOAA) Fisheries Community Restoration Program (CRP) proposes to release funding to the Great Lakes Commission (GLC) and the West Michigan Shoreline Regional Development Commission (WMSRDC) under the American Recovery and Reinvestment Act of 2009 (ARRA) to conduct restoration activities intended to implement a comprehensive fish and wildlife habitat restoration project in the Muskegon Lake Area of Concern (AOC) (hereafter referred to as the 'Project'). The Project is designed to address restoration targets established for several beneficial use impairments (BUIs) associated with Muskegon Lake, including the Loss of Fish and Wildlife Habitat, Degraded Fish and Wildlife Populations, Degraded Benthos, and Degraded Aesthetics. The primary goal of this Project is to restore and to protect fisheries and wildlife habitat through the restoration of natural resources and native vegetation to the shoreline and restoring emergent and open-water wetlands. In addition to improving existing ecological resources, the proposed Project will enhance social and economic benefits for the surrounding communities. As part of its overall goals, the Project is intended to help improve public access; create and retain jobs through promoting tourism and recreation; increase property values; and achieve long-term socioeconomic benefits related to improved habitat for fish and wildlife populations in Muskegon Lake, the Muskegon River, and Lake Michigan. The Project consists of restoration actions at twelve Sites along the southern and eastern shoreline of Muskegon Lake and along the South Branch of the Muskegon River"--Page i.

Author: T. F. Nalepa
Publisher:
ISBN:
Category : Benthos
Languages : en
Pages : 21

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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.

Author: Gregory Robert Olson
Publisher:
ISBN:
Category : Electric power-plants
Languages : en
Pages : 490

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Book Description

Author: Sanhita Datta
Publisher:
ISBN:
Category : Invertebrates
Languages : en
Pages : 122

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Book Description

Author: Shelly Pickett
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
The monitoring of changes in benthic macroinvertebrate communities over time facilitates the evaluation of changes in the function and structure of aquatic ecosystems. I hypothesize that it will be possible to reconstruct historic macroinvertebrate communities by examining gut contents of fishes preserved in natural history museums. Researchers can use this knowledge to estimate the historic benthic macroinvertebrate community for streams from which we have fish museum specimens. These historic data can then be compared to current data to see how macroinvertebrate communities have changed over time.In this study, the fishes whose gut content most accurately reflected the benthic macroinvertebrate community of a freshwater stream, specifically Marshalls Creek, were identified. Both fish species and benthic macroinvertebrates were collected at various sites of Marshalls Creek in East Stroudsburg, PA, in March, August, and December 2010. Collections were taken at different times of year to reflect seasonal variation both in species sampled and quantity collected. 231 fish were dissected and their gut contents identified. Bluespotted Sunfish, Redbreast Sunfish, and White Suckers were the species that best represented the benthic macroinvertebrate community from their gut content. These species can be used to predict 81% of the total summer taxa.If there are 10 museum specimens of the selected species available, (in this case 10 White Suckers, 10 Bluespotted Sunfish, and 10 Redbreast Sunfish), one could dissect a total of 30 fish and expect to identify 68% of the total taxa (both kicknet and gut taxa combined) found in the freshwater stream where the specimens originated.In order to estimate sampling distribution, using R 3.0.2, 100 simulations were run of each combination of three fish species to determine the average quantity of taxa consumed (to the family level) along with sampling variation. The benthic macroinvertebrate data obtained fromivthe dissection of museum specimens could then be compared to data obtained from more recently collected specimens (10 White Suckers, 10 Bluespotted Sunfish, and 10 Redbreast Sunfish) and a comparison made to determine how the macroinvertebrate community has changed over time. Are families associated with high quality streams missing from the current collection? Based on which macroinvertebrate families are present and/or absent, the types of stresses that have caused these absences can be determined.

Author: Sara Mueller
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
Benthic macroinvertebrates have been used for over a century in biomonitoring. Biomonitoring is the use of biological measures to determine the state of or to evaluate changes in the environment. This surveillance method is commonly used as part of water quality monitoring. Agencies vary in their approach in collecting, sorting, and identifying benthic macroinvertebrates. The objective of this study is to compare entire collections of benthic macroinvertebrates collected by researchers in 2015 to computer-simulated data of subsamples of 100, 200, and 300 organisms. The computer simulated data represent protocols used by the National Park Service and the Pennsylvania Department of Environmental Protection. The Brillouin Index was calculated for each site and subsample permutation. An ANOVA analysis of the Brillouin Index by site showed that there is a statistically significant difference (p

Author: Karen Adams
Publisher:
ISBN:
Category : Benthos
Languages : en
Pages : 32

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Book Description

Author: F. Richard Hauer
Publisher: Academic Press
ISBN: 0080547435
Category : Science
Languages : en
Pages : 894

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Book Description
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