Fishery and Limnological Survey of Sullivan Lake, Pend Oreille County, Washington
Fishery and Limnological Survey of Sullivan Lake, Pend Oreille County, Washington

Author: Bret D. Nine

Publisher:

Published: 2005

Total Pages: 448

ISBN-13:

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"The present study assessed the current stock status of fishes and identified factors that limited fish production in Sullivan Lake, Pend Oreille County, Washington. Research was conducted over an 8 month period (April- November 2003). Primary production was assessed through measurements of chlorophyll a and plankton photosynthesis. Secondary production was assessed through zooplankton and macroinvertebrate sampling. Fish status was assessed by making eledrofish, gill net, fyke net and minnow trap surveys. Data collected during these surveys was used to assess growth rates and food habits of each species. Sullivan Lake was classified as an oligotrophic lake due to its low nutrient levels (10 [micor]g/L of TP), high transparency (10.4 meters) and low chlorophyll a concentrations in the epilimnion (1.11 [micro]g/L). Low phosphorus limits primary production. Limited primary production resulted in low secondary production as indicated by low densities (626/m3) and biomass (509 [micro]g/m3) of zooplankton. A total of 3,280 fish, representing 12 species were collected during fish surveys. The lake was primarily composed of redside shiners (Richardwnius balteatus) (70.2%) and longnose suckers (Catostomus catostomus)(11.3%). The most abundant game species was kokanee (Oncorhynchus nerka) (8.3%) and burbot (Lata Iota) (7.3%). There was a limited number of cutthroat (Oncorhynchus clarki) (1.6%), rainbow (Oncorhynchus mykiss) (

Successes, Limitations, and Frontiers in Ecosystem Science
Successes, Limitations, and Frontiers in Ecosystem Science

Author: Michael L. Pace

Publisher: Springer Science & Business Media

Published: 2013-12-01

Total Pages: 515

ISBN-13: 1461217245

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Ecosystem research has emerged in recent decades as a vital, successful, and sometimes controversial approach to environmental science. This book emphasizes the idea that much of the progress in ecosystem research has been driven by the emergence of new environmental problems that could not be addressed by existing approaches. By focusing on successes and limitations of ecosystems studies, the book explores avenues for future ecosystem-level research.

Algal Ecology
Algal Ecology

Author:

Publisher: Academic Press

Published: 1996-06-03

Total Pages: 781

ISBN-13: 0080526942

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Algae are an important component of aquatic benthic ecosystems because they reflect the health of their environment through their density, abundance, and diversity. This comprehensive and authoritative text is divided into three sections to offer complete coverage of the discussion in this field. The first section introduces the locations of benthic algae in different ecosystems, like streams, large rivers, lakes, and other aquatic habitats. The second section is devoted to the various factors, both biotic and abiotic, that affect benthic freshwater algae. The final section of the book focuses on the role played by algae in a variety of complex freshwater ecosystems. As concern over environmental health escalates, the keystone and pivotal role played by algae is becoming more apparent. This volume in the Aquatic Ecology Series represents an important compilation of the latest research on the crucial niche occupied by algae in aquatic ecosystems. - Presents algae as the important player in relation to environmental health - Prepared by leading authorities in the field - Includes comprehensive treatment of the functions of benthic algae as well as the factors that affect these important aquatic organisms - Acts as an important reference for anyone interested in understanding and managing freshwater ecosystems

Stock Assessment in Inland Fisheries
Stock Assessment in Inland Fisheries

Author: Ian G. Cowx

Publisher: Wiley-Blackwell

Published: 1996-04-11

Total Pages: 528

ISBN-13: 9780852382240

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Based on an international symposium and workshop hosted by the University of Hull International Fisheries Institute, this new reference includes expert reviews of the advantages and shortcomings of all current techniques and management strategies used in assessment of freshwater fish stocks worldwide. In addition to the core reports, overview papers present a summary of the current status of our knowledge in each of the major subject areas, with a final chapter appraising present and future perspectives on the concept of stock assessment. All contributions are fully illustrated and referenced. Stock Assessment in Inland Fisheries is likely to become the international, standard reference for all fisheries departments--offering a single source of contemporary and definitive information. Moreover, it is also intended to serve as a course text for students learning about freshwater-fisheries management.