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DESICCATION INDEX: A MEASURE OF DAMAGE CAUSED BY ADVERSE AERIAL EXPOSURE ON INTERTIDAL EELGRASS (ZOSTERA MARINA) IN AN OREGON (USA) ESTUARY
Boese, B L., K. E. Alayan, E. F. Gooch, AND B. D. Robbins. DESICCATION INDEX: A MEASURE OF DAMAGE CAUSED BY ADVERSE AERIAL EXPOSURE ON INTERTIDAL EELGRASS (ZOSTERA MARINA) IN AN OREGON (USA) ESTUARY. AQUATIC BOTANY. Elsevier Science BV, Amsterdam, Netherlands, 76:329-337, (2003).
Eelgrass (Zostera marina) blade necrosis resulting from intertidal aerial exposure is describe. A desiccation index was developed to quantitatively assess this damage. This index was then used to evaluate the extent of desiccation damage across intertidal bathymetric slopes (steep and shallow) and across intertidal tide height gradients in Z. marina beds located in Yaquina Bay, Newport, OR, USA. Results suggest that higher intertidal plants have more desiccation damage than those growing lower in the intertidal. This damage may partially explain why high intertidal plants tend to have shorter canopy heights as blades tended to break at desiccation damage points. No effect of bathymetric slope on the desiccation index was observed.
Record Details:Record Type: DOCUMENT (JOURNAL/PEER REVIEWED JOURNAL)
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