Date (Publication)

2001-09

Responsable

Nom de l'organisation	Nom de la personne	Adresse e-mail	Rôle
DFO	Colin Levings		Point de recherche
School of Natural Resources, The Ohio State University	J.L. Arvai		Point de recherche
Department of Earth and Ocean Sciences	P.J. Harrison		Point de recherche
Department of Zoology, The University of British Columbia	W.E. Neill		Point de recherche

Forme de la présentation

Document numérique

Autres informations de référence

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

But

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.

Etat

Finalisé

Fréquence de mise à jour

Non planifiée

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

Limitation d'utilisation

Copyright 2002 Elsevier Science Ltd. All rights reserved.

Langue de la ressource

English

Encodage des caractères

Utf8

Catégorie ISO

• Océans
• Environnement

Description de l'environnement de travail

14 KB

Description

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

Début

1994-05-10

Fin

1996-11

Informations supplémentaires

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.

Format (encodage)

Nom	Version
electronic	none

Contact

Nom de l'organisation	Nom de la personne	Adresse e-mail	Rôle
Pacific Salmon Foundation	Isobel Pearsall	pearsalli@shaw.ca	Distributeur

Ressource en ligne

Protocole	Adresse Internet	Nom
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

Niveau

Jeu de données

Généralités sur la provenance

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.

Métadonnées

Identifiant de la fiche

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

Langue

eng

Jeu de caractères

Utf8

Type de ressource

Jeu de données

Date des métadonnées

2023-12-19T00:17:59.346Z

Nom du standard de métadonnées

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

Version du standard de métadonnées

NAP - CAN/CGSB-171.100-2009

Contact

Nom de l'organisation	Nom de la personne	Adresse e-mail	Rôle
Pacific Salmon Foundation	Sarah Fraser	fraser.sarahk@gmail.com	Auteur

Autre langue

LanguageCode	CharacterEncoding
Français	Utf8
Anglais	Utf8