Baseline Scuba Assessments of Habitat and Fishery Resources in Eight Candidate Marine Reserve Sites in Skagit County, Washington.

Rubicon Research Repository/Manakin Repository

Baseline Scuba Assessments of Habitat and Fishery Resources in Eight Candidate Marine Reserve Sites in Skagit County, Washington.

Show full item record


Title: Baseline Scuba Assessments of Habitat and Fishery Resources in Eight Candidate Marine Reserve Sites in Skagit County, Washington.
Author: Weispfenning, AJ; Dinnel, PA; Schwarck, NT; McKeen, G
Abstract: Continuous human demand for Puget Sound’s marine resources has negatively affected the biological richness of this ecosystem. In order to maintain a sustainable fishery and viable ecosystem, the Skagit County Marine Resources Committee is in the process of establishing marine reserves to protect the territorial, long lived, and slow to mature bottomfish brood stock from over harvesting. The objective of this study is to estimate current bottomfish density, fish size, and document habitat complexity and species composition within 8 candidate rocky reef reserve sites. Data were collected using visual band transect scuba surveys and ROV (Remotely Operated Vehicle) cruises to assess 8 target bottomfish species: black, canary, copper, quillback, and yellowtail rockfishes, lingcod, kelp greenling, and cabezon. The number of target species at each survey site ranged from 0-6 and a site within the Rosario area was the most diverse. Average fish size ranged from 0.15 m – 0.55 m and the average size of the observed rockfishes was 0.25 m. Scuba surveys indicate that nearshore bottomfishes tended to be within a 45 ft-65 ft depth range, which suggests the need for ROV surveys at greater depths for more accurate density estimations. Northwest Island, Rosario, and Burrows channel appear to be excellent locations for marine reserves as a result of complex rocky reef habitat, high bottomfish density and diversity, visibility to the public, and proximity to marine research institutions.
Description: American Academy of Underwater Sciences (http://www.aaus.org/)
URI: http://archive.rubicon-foundation.org/9017
Date: 2005

Files in this item

Files Size Format View
AAUS_2005_11.pdf 870.1Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record

Browse

My Account