Oregon: Not the "Show" me State. A Study on the Accuracy of Tresus capax (gaper clam) Burrow Hole Counts

Identification Information

Citation

Originator: Amoroso, Natalie A., Anthony F. D'Andrea, Stacy N. Galleher, Kelsey L. Adkisson, Jennifer C. Boyer, and Amy M. Hutmacher

Publish Date: 2011

Online Link: None

BPA Project #:

Contact Information

Agency: Oregon Department of Fish and Wildlife

Name: Cedric Cooney

Job Position: Natural Resources Data and Systems Manager

Telephone: 503-947-6094

E-Mail Address: cedric.x.cooney@odfw.oregon.gov

Description

Abstract: When conducting clam surveys, there are tradeoffs between survey time, area covered and data accuracy. Clams can be identified from species specific burrow holes, or “shows”, which are created after the clam’s siphon is withdrawn from the sediment surface. Historically, burrow hole counts were used to quickly collect abundance data over a large spatial scale (Hancock et al. 1979). In the past, the state’s harvest regulations were based on the best clam population data available, primarily burrow hole count data. However, different species burrow holes can occasionally look somewhat similar in appearance (Figure 1) or submerged aquatic vegetation (SAV) may obscure burrow holes.

Purpose:

Time Period of Content:

Geographic Extent: Not available

Status: Final

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Format: PDF

Data Quality Information

Lineage-Source: Pacific Estuarine Research Society Conference poster

Data Information

No data information was supplied.

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Is a physical copy maintained for reference at Headquarters? Unknown