Review of potential critical habitats for white sturgeon (Acipenser transmontanus) in the Fraser River estuary

White sturgeon are listed with COSEWIC as a species of Special Concern. Several of the existing water quality criteria are based on water column characteristics (e.g. temperature, flow, substrate type, dissolved oxygen, and toxicants), often from laboratory measurements of tolerance. Preliminary results from an age-structured density-independent model for white sturgeon populations and habitats in the lower Fraser River and estuary are presented. The simulations suggested that access, water flow, and sediment exchange between slough and channel habitat are key ecological processes for this species. Metrics for mapping substrate and related biophysical features important for white sturgeon are not well developed. Relationships between habitats and white sturgeon populations dynamics are poorly understood. Mapping at the macroscale (1:1 M) showed that about 70% of estuarine habitat has been lost in the Fraser River estuary owing to urbanization. It is not clear if the remaining habitat in its degraded configuation is sufficient to maintain present or restored white sturgeon populations.

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Métadonnées

Identifiant du fichier
1ac38fbc-e6fe-4989-90c3-e84b0604aa50 XML
Date de création
2023-12-20T20:50:25.939Z
Langue

eng
Jeu de caractère
utf8
Type de ressource
dataset
author
  Pacific Salmon Foundation - Sarah Fraser ( Assistant)

276 Nottingham Dr, Nanaimo, British Columbia, V9T 1K8, Canada
250-714-6192

 

Identification des données

Titre

Review of potential critical habitats for white sturgeon (Acipenser transmontanus) in the Fraser River estuary
Date (publication)
2003
Etat
completed
Langue

eng
Jeu de caractère
utf8
Catégorie thématique
  • Océans
Fréquence de mise à jour
notPlanned
principalInvestigator
  DFO - Colin Levings ( Research Scientist)

Canada
principalInvestigator
  University of Calgary - W.A. Nelson

Calgary, Alberta, T2N 1N4, Canada

Mots clés

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

  • Earth Science > Biological Classification > Animals/Vertebrates > Fish > Ray-finned Fishes > Sturgeons/Paddlefishes

  • Earth Science > Biosphere > Aquatic Ecosystems

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 > Fraser River and BC Interior

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

Not to be cited without permission of the authors
Début
2003
Fin
2003

Étendue

Description

Fraser River estuary
N
S
E
W




 
 

Distribution

Formats de distribution

Format de distribution
  • electronic ( none)

 
distributor
  Pacific Salmon Foundation - Isobel Pearsall ( Project Lead)

Vancouver, BC,, British Columbia, V6J 4S6, Canada
(604) 664-7664

(604) 664-7665

https://www.psf.ca/contact
 
Niveau
dataset
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.

 

Aperçus

thumbnail

Mots clés

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

Earth Science > Biological Classification > Animals/Vertebrates > Fish > Ray-finned Fishes > Sturgeons/Paddlefishes Earth Science > Biosphere > Aquatic Ecosystems


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