Date (Publication)

2001-09

Cited responsible party

Organisation name	Individual name	Electronic mail address	Role
DFO	Colin Levings		Principal investigator
School of Natural Resources, The Ohio State University	J.L. Arvai		Principal investigator
Department of Earth and Ocean Sciences	P.J. Harrison		Principal investigator
Department of Zoology, The University of British Columbia	W.E. Neill		Principal investigator

Presentation form

Digital document

Other citation details

Marine Pollution Bulletin 44 (2002) 511–519

PII: S00 2 5-3 2 6X(0 1 )0 02 6 4- 8

0025-326X/02/$ - see front matter

Purpose

In this paper we consider the improvement of the ecosystem of Sturgeon bank following the cessation of this stress, focusing on variables such as dissolved oxygen and sediment quality which had been measured in a number of earlier studies during the time when primary treated sewage contaminated the surrounding mudflats.

Status

Completed

Maintenance and update frequency

Not planned

Global Change Master Directory (GCMD) Science Keywords v15.9

• Earth Science > Oceans

• Earth Science > Oceans > Water Quality > Ocean Contaminants

DFO Areas

• North Pacific Ocean > Fraser River and BC Interior

• North Pacific Ocean > South Inner Coast(Johnstone Strait, Strait of Georgia, Juan de Fuca, inlets and passages)

Global Change Master Directory (GCMD) Science Keywords v15.9

• Earth Science > Biosphere > Aquatic Ecosystems > Estuarine Habitat

• Earth Science > Oceans > Marine Sediments > Sedimentation

DFO Areas

• North Pacific Ocean > Fraser River and BC Interior

• North Pacific Ocean > South Inner Coast(Johnstone Strait, Strait of Georgia, Juan de Fuca, inlets and passages)

DFO Areas

• North Pacific Ocean > South Inner Coast(Johnstone Strait, Strait of Georgia, Juan de Fuca, inlets and passages)

Global Change Master Directory (GCMD) Science Keywords v15.9

• Earth Science > Biological Classification > Animals/Invertebrates > Arthropods > Crustaceans > Amphipods

• Earth Science > Biosphere > Aquatic Ecosystems > Estuarine Habitat

• Earth Science > Biosphere > Ecological Dynamics > Community Dynamics > Indicator Species

• Earth Science > Human Dimensions > Environmental Impacts > Sewage

DFO Areas

• North Pacific Ocean > Fraser River and BC Interior

Use limitation

Copyright 2002 Elsevier Science Ltd. All rights reserved.

Language

English

Character set

UTF8

Topic category

• Oceans
• Environment

Environment description

14 KB

Description

Four sampling sites within the Fraser river estuary, BC, Canada.

Begin

1994-05-10

End

1996-11

Supplemental Information

Primary treated sewage effluent from the city of Vancouver, Canada was deposited directly onto the intertidal ecosystem of Sturgeon bank, Fraser river estuary between 1962 and 1988. In response to the degraded sediment conditions an azoic zone developed near the discharge outfall. Effluent discharges into the intertidal zone were almost completely stopped in 1988 with the construction of a submerged outfall. Our studies, conducted between 1994 and 1996, showed considerable improvement in the environment of the mudflat ecosystem, including increased dissolved oxygen, decreased sediment chlorophyll, decreased organic material in the sediment, reduced heavy metals in surficial sediment and increased grain size. The amphipod Corophium salmonis, important in the food web for juvenile salmon and other fish species, recolonized the previously azoic location. At reference stations, C. salmonis density was similar to that observed in previous surveys two decades earlier. Our data strongly suggest that improvement of sediment conditions near the former sewage outfall was a major factor enabling colonization by C. salmonis.

Distribution format

Name	Version
electronic	none

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
Pacific Salmon Foundation	Isobel Pearsall	pearsalli@shaw.ca	Distributor

OnLine resource

Protocol	Linkage	Name
WWW:LINK-1.0-http--link	https://www.dfo-mpo.gc.ca/science/data-donnees/index-eng.html	DFO Science website
WWW:DOWNLOAD-1.0-http--download	https://soggy2.zoology.ubc.ca/geonetwork/srv/api/records/09155311-8f2f-4d7c-95a0-6f5f235f0e31/attachments/09155311-8f2f-4d7c-95a0-6f5f235f0e31.pdf	09155311-8f2f-4d7c-95a0-6f5f235f0e31.pdf
WWW:DOWNLOAD-1.0-http--download	https://soggy2.zoology.ubc.ca/geonetwork/srv/api/records/09155311-8f2f-4d7c-95a0-6f5f235f0e31/attachments/09155311-8f2f-4d7c-95a0-6f5f235f0e31.xlsx	09155311-8f2f-4d7c-95a0-6f5f235f0e31.xlsx

Hierarchy level

Dataset

Statement

Levings produced paper copy. Fraser scanned with Fujitsu Scansnap s1500 (ABBY Finereader OCR software). Data was extracted through Adobe Reader conversion and manual entry into MS Excel.

Metadata

File identifier

09155311-8f2f-4d7c-95a0-6f5f235f0e31 XML

Metadata language

eng

Character set

UTF8

Hierarchy level

Dataset

Date stamp

2023-12-19T00:17:59.346Z

Metadata standard name

North American Profile of ISO19115:2003 - Geographic information - Metadata

Metadata standard version

NAP - CAN/CGSB-171.100-2009

Metadata author

Organisation name	Individual name	Electronic mail address	Role
Pacific Salmon Foundation	Sarah Fraser	fraser.sarahk@gmail.com	Author

Other language

Language	Character encoding
French	UTF8
English	UTF8