Dredging impact on an urbanized Florida bayou: effects on benthos and algal-periphyton

Impacts of dredging can be localized and of short duration. Environmental effects of dredging events have been uncommonly reported for shallow, residential estuaries characteristic of the Gulf of Mexico region. The objective of this study was to determine the impact of hydraulic dredging on an urban...

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Bibliographic Details
Published in:Environmental pollution (1987) 2001-01, Vol.115 (2), p.161-171
Main Authors: Lewis, M.A, Weber, D.E, Stanley, R.S, Moore, J.C
Format: Article
Language:English
Subjects:
Americamysis bahia
Animal, plant and microbial ecology
Animals
Applied ecology
Applied sciences
Bayou-Estuary
Benthos
Biological and medical sciences
Brackish
Crustacea - drug effects
Crustacea - growth & development
Dredging
Earth sciences
Earth, ocean, space
Ecotoxicology, biological effects of pollution
Engineering and environment geology. Geothermics
Environment
Environmental Monitoring
Eukaryota - drug effects
Eukaryota - growth & development
Exact sciences and technology
Florida
Fundamental and applied biological sciences. Psychology
Geologic Sediments - analysis
Geologic Sediments - chemistry
Marine and brackish environment
Metals, Heavy - analysis
Mysidopsis bahia
Natural water pollution
Periphyton
Pollution
Pollution, environment geology
Seawater - chemistry
Seawaters, estuaries
Soil Pollutants - analysis
Soil Pollutants - toxicity
United States
United States Environmental Protection Agency
Urbanization
USA, Florida
Water Movements
Water treatment and pollution
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Summary:Impacts of dredging can be localized and of short duration. Environmental effects of dredging events have been uncommonly reported for shallow, residential estuaries characteristic of the Gulf of Mexico region. The objective of this study was to determine the impact of hydraulic dredging on an urbanized estuary. Physicochemical quality, benthic community composition, whole sediment toxicity, periphytic algal community composition and trace metal tissue quality were determined prior to and after dredging. The effects on surface water pH, dissolved oxygen, and temperature were negligible but photosynthetically active radiation was decreased at several stations. Dredging significantly reduced benthic diversity and density ( P
ISSN:0269-7491
1873-6424
DOI:10.1016/S0269-7491(01)00118-X