Physical Sciences and Mathematics Commons^™

Ecotones: The Heartbeat Of Huxley, 2002, Fall, Issue 09, Laurel Eddy, Huxley College Of The Environment, Western Washington University

Historical Collection of Huxley Newsletters

No abstract provided.

Epibiotic Sponges On The Scallops Chlamys Hastata And Chlamys Rubida: Increased Survival In A High-Sediment Environment, Duncan O. Burns, Brian L. Bingham

Environmental Sciences Faculty and Staff Publications

The small free-swimming scallops, Chlamys hastata and Chlamys rubida, are frequently encrusted by the sponges Mycale adhaerens and Myxilla incrustans. It is unclear why this association exists. We hypothesized that living on scallop valves increases sponge survival by reducing the effects of sediment accumulation. Scallops were collected to measure correlations between sediment load and encrusting sponge mass. In the laboratory, the survival of sponges on living scallops and empty scallop valves was measured. Time-lapse video was used to quantify spontaneous swimming and clapping of C. hastata. In the field, both scallop size and sponge mass were significantly greater …

Ecotones: The Heartbeat Of Huxley, 2002, Fall, Issue 08, Laurel Eddy, Huxley College Of The Environment, Western Washington University

Historical Collection of Huxley Newsletters

No abstract provided.

Reconstructing Salmon Abundance In Rivers: An Initial Dendrochronological Evaluation, James M. Helfield, Robert J. Naiman, Deanne C. Drake

Environmental Sciences Faculty and Staff Publications

Decision-makers concerned with salmon or their stream habitats are faced with many persistent, difficult questions including: how large and variable were these populations before European settlement? Here, we examine the feasibility of reconstructing salmon abundance using links between marine nutrients carried upstream by Pacific salmon ( Oncorhynchus spp.) and growth of dominant riparian trees in two Alaskan systems. We employ standard dendrochronology methods and regression models to quantify relationships between annual tree-ring growth, salmon escapement, and the climate pattern that affects oceanic production of Northeast Pacific salmon stocks, the Pacific Decadal Oscillation (PDO). We find that known, annual salmon escapement …

The Planet, 2002, Autumn, Kate Koch, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

Ecotones: The Heartbeat Of Huxley, 2002, Spring, Issue 08, Tennyson Ketcham, Laurel Eddy, Huxley College Of The Environment, Western Washington University

Historical Collection of Huxley Newsletters

No abstract provided.

Effects Of Sponge Encrustation On The Swimming Behaviour, Energetics And Morphometry Of The Scallop Chlamys Hastata, Deborah Anne Donovan, Brian L. Bingham, Heather M. (Heather Maria) Farren, Rodolfo Gallardo, Veronica L. Vigilant

Environmental Sciences Faculty and Staff Publications

The effect of sponge encrustation on swimming ability of Chlamys hastata was determined by investigating swimming behaviour, scallop morphometry, and energy expended during swimming with and without commensal epibionts. Scallops swam significantly longer after sponge encrustation was removed from their shells, but no significant differences were detected in swimming elevation or distance. Scallops with sponge encrustation showed no adductor muscle hypertrophy or changes in shell morphometry compared to scallops without encrustation. However, C. hastatadid exhibit scaling relationships associated with maximizing swimming efficiency. Specifically, shell width and adductor muscle mass were positively allometric with shell height, while shell mass was …

Ecotones: The Heartbeat Of Huxley, 2002, Spring, Issue 04, Tennyson Ketcham, Laurel Eddy, Huxley College Of The Environment, Western Washington University

Historical Collection of Huxley Newsletters

No abstract provided.

The Planet, 2002, Spring, Levi Pulkkinen, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

Applications In Landscape Ecology: A Simple Rule-Based Simulation Approach To Modeling Windthrow Disturbance In Forests Of The Western Cascades In Oregon, Brendan C. (Brendan Charles) Ward

WWU Honors College Senior Projects

The study of how biotic and abiotic processes function and interact within the biosphere is fundamental to the field of ecology. In particular, the field of landscape ecology focuses on the relationship between patterns and process at the landscape level. Windthrow is an important, though unfortunately under-studied agent of disturbance in the temperate coniferous forests of the Pacific Northwest. Along with wildfire, windthrow is a dominant force in shaping the structure of the region's forested landscapes, resulting in visible vegetation patterns at the landscape level. The present study involved the development of a windthrow simulation model for the Bull Run …

Lake Whatcom Monitoring Project 2000/2001 Report, Robin A. Matthews, Michael Hilles, Joan Vandersypen, Robert J. Mitchell, Geoffrey B. Matthews

Lake Whatcom Annual Reports

This report is part of an on-going series of annual reports and special project reports that document the Lake Whatcom monitoring program.

This work is conducted by the Institute for Watershed Studies and other departments at Western Washington University. The major objective of this program is to provide long-term baseline water quality monitoring in Lake Whatcom and selected tributaries. Each section contains brief explanations about the water quality data, along with discussions of patterns observed in Lake Whatcom.

Ecotones: The Heartbeat Of Huxley, 2002, Winter, Issue 01, Laurel Eddy, Huxley College Of The Environment, Western Washington University

Historical Collection of Huxley Newsletters

No abstract provided.

Hurricane Mitch: Impacts On Mangrove Sediment Elevation Dynamics And Long-Term Mangrove Sustainability, Donald R. Cahoon, Philippe Hensel, John M. Rybczyk, Brian Christopher Perez

Environmental Sciences Faculty and Staff Publications

Hurricane Mitch left three very different impacts on mangroves in the coastal zone of Central America. First, in the Caribbean, direct wind and flood-induced mangrove mortality was seen in the Bay Islands. Second, wave-induced erosion of beaches and subsequent sediment deposition buried mangrove forests of Punta de Manabique, Guatemala. Finally, along the Pacific coast, some mangroves of the Gulf of Fonseca were buried under up to 100 cm of sediments eroded from uplands and carried down slope by river flooding. Each of these three impacts left a different footprint on the mangrove communities, and these communities are expected to follow …

The Planet, 2002, Winter, Levi Pulkkinen, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

Huxley Horizon, 2002, Winter, Volume 02, Issue 01, Huxley College Of The Environment, Western Washington University

Historical Collection of Huxley Newsletters

No abstract provided.