Science Inventory

BENTHIC MACROFAUNA-HABITAT RELATIONSHIPS IN WILLAPA BAY, WA

Citation:

Ferraro, S P. AND F A. Cole. BENTHIC MACROFAUNA-HABITAT RELATIONSHIPS IN WILLAPA BAY, WA. Presented at Pacific Estuarine Research Society annual meeting, Sydney, B.C., Canada, May 12-13, 2000.

Description:

Benthic macrofauna-habitat relationships were determined estuary-wide in Willapa Bay, WA for four intertidal habitats ((1) eelgrass, Zostera marina, (2) Atlantic cordgrass, Spartina alterniflora, (3) ghost shrimp, Neotrypaea californiensis, (4) mud shrimp, Upogebia pugettensis) in 1996 and seven habitats ((1-4), above, and intertidal (5) oyster, Crassostrea gigas, and (6) mud, and (7) subtidal, undredged) in 1998. Ordination (cluster) analysis and species lists revealed that macrofaunal species composition and abundance was similar in oyster, eelgrass and, to a somewhat lessor extent, mud shrimp habitat, but differed considerably among the other habitats. Macrofaunal density in habitats 1-4 was 2- to 3-fold higher in 1996 than in 1998; however, in relative terms, the differences in macrofaunal community structure among the habitats were remarkably similar in both years. Areal species richness, abundance and total biomass was generally highest in habitats 1, 2 and 5, intermediate in habitats 4 and 6, and lowest in habitats 3 and 7. These results suggest that macrofauna-habitat relationships can be used as relative habitat value indicators in large-scale ecological risk assessments.

Record Details:

Record Type: DOCUMENT (PRESENTATION/ABSTRACT)
Product Published Date: 05/12/2000
Record Last Revised: 06/21/2006
Record ID: 60288

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL HEALTH AND ENVIRONMENTAL EFFECTS RESEARCH LABORATORY

WESTERN ECOLOGY DIVISION

PACIFIC COASTAL ECOLOGY BRANCH