Physical Sciences and Mathematics Commons^™

Design And Analysis Of Multispecies Toxicity Tests For Pesticide Registration, Wayne G. Landis, Robin A. Matthews, Geoffrey B. Matthews

Environmental Sciences Faculty and Staff Publications

The community conditioning hypothesis describes ecological structures as historical, nonequilibrial, and by definition complex. Indeed, the historical nature of ecological structures is seen as the primary difference between single-species toxicity tests and multispecies test systems. Given the complex properties of ecological structures, multispecies toxicity tests need to be designed accordingly with appropriate data analysis tools. Care must be taken to ensure that each replicate shares an identical history, or divergence will rapidly occur. Attempting to realize homogeneity by linear cross inoculation or waiting for an equilibrium state to occur assumes properties that ecological structures do not have. Data analysis must …

The Planet, 1997, Autumn, Derek Reiber, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

Conserving Coastal Wetlands Despite Sea Level Rise, W. K. (William K.) Nuttle, Mark M. Brinson, D. Cajon, J. C. Callaway, R. R. Christian, G. L. Chmura, William H. Conner, Robert H. Day, M. Ford, J. Grace, J. Lynch, Richard A. Orson, R. W. Parkinson, D. Reed, John M. Rybczyk, T. J. Smith Iii, Richard P. Stumpf, K. Williams

Environmental Sciences Faculty and Staff Publications

Coastal wetlands provide valuable services such as flood protection and fisheries production to a global population that is increasingly concentrated near the coast and dependent on its resources. Many of the world's coastal wetlands suffered significant losses during this century, and the creation of new wetland areas is not keeping pace with recent losses. Some destruction of wetland areas can be expected as a consequence of the continual reworking of the coastal zone by dynamic geologic processes. Yet human activities also play a role, both directly by encroaching on coastal wetlands and indirectly by influencing the hydrologic and geologic processes …

The Planet, 1997, Spring, Julie Irvin, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

Channel Restructuring Along Crystal Springs: Creating Salmon Habitat On A Lowland Stream, Lua Olsen

WWU Honors College Senior Projects

Crystal Springs is a small tributary of Tenmile Creek located in the lower drainage basin of the Nooksack River (Figure 1). It is 2.6 km in length and has a total relief of approximately 21 meters. A soil survey of the area suggests that prior to agricultural development, Crystal Springs existed as a swamp and was later trained into the man-made irrigation ditch which it currently occupies. Aerial photographs taken as early as June 30, 1947 reveal that the channel has undergone no significant change in morphology in the last 50 years. Recently a local landowner granted permission for the …

Lake Whatcom Monitoring Project 1995/1996 Report, Robin A. Matthews, Michael Hilles, 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.

The Planet, 1997, Winter, Julie Irvin, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.

An Analysis Of Pre-Settlement Biomass And Vegetation In Northwest Whatcom County, Washington, Circa Late 19th Century., Jayme Anne Gordon

WWU Honors College Senior Projects

Much of ecology, especially terrestrial ecology, studies how a given system changes over time. Pressures from preservationists and demands for timber products have focused ecological attention on Pacific Northwest forest ecosystems, and much of the debate has been over how change affects "old-growth” forests. Old-growth forests have a number of distinguishing characteristics including species composition, size of trees and forest structure that make them unique (Waring and Franklin 1979, Franklin et al. 1981). Old-growth forests west of the Cascade mountain range are dominated by Douglas fir (Psuedotsuga menziesii) and western hemlock (Tsuga heterophylla) trees approximately 200-750 …