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Association Between Fire Return Interval And Population Dynamics In Four California Populations Of Tecate Cypress (Cupressus Forbesii), Roland C. De Gouvenain, Ali M. Ansary Dec 2006

Association Between Fire Return Interval And Population Dynamics In Four California Populations Of Tecate Cypress (Cupressus Forbesii), Roland C. De Gouvenain, Ali M. Ansary

Faculty Publications

The Tecate cypress (Cupressus forbesii) is a tree species associated with chaparral ecosystems in southern California and northern Baja California, Mexico. It is fire-adapted, its regeneration triggered by the opening of serotinous cones when adult trees are burned. Surveys made in the 1980s by others suggested that some Tecate cypress populations were declining, and some authors suggested that increased fire frequency in southern California was a major factor for this decline. We asked whether current population trends were still negative for Tecate cypress 20 years later, and whether population growth was associated with fire return interval length. Based on demographic ...


Virginia Wetlands Report Vol. 21, No. 2, Virginia Institute Of Marine Science, Center For Coastal Resources Management Oct 2006

Virginia Wetlands Report Vol. 21, No. 2, Virginia Institute Of Marine Science, Center For Coastal Resources Management

Virginia Wetlands Reports

Tools of the Tidal Shoreline Management Trade


The Planet, 2006, Fall, Shawn C. Query, Huxley College Of The Environment, Western Washington University Oct 2006

The Planet, 2006, Fall, Shawn C. Query, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.


The Planet, 2006, Spring, Sarah M. Kuck, Huxley College Of The Environment, Western Washington University Apr 2006

The Planet, 2006, Spring, Sarah M. Kuck, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.


Virginia Wetlands Report Vol. 21, No. 1, Virginia Institute Of Marine Science, Center For Coastal Resources Management Mar 2006

Virginia Wetlands Report Vol. 21, No. 1, Virginia Institute Of Marine Science, Center For Coastal Resources Management

Virginia Wetlands Reports

Integrated Coastal & Shoreline Management Guidance


The Importance Of Host Fish In Long Range Transport Of Unionids In Large Rivers , Daelyn Adele Woolnough Jan 2006

The Importance Of Host Fish In Long Range Transport Of Unionids In Large Rivers , Daelyn Adele Woolnough

Retrospective Theses and Dissertations

Freshwater mussels (Family: Unionidae) are the most imperiled faunal group in North America, yet little is known about factors that influence their distribution in rivers and lakes---especially over large geographic areas. They have a unique life cycle that includes an obligate parasite stage on fish. Throughout their life spans, long range or upstream transport is principally accomplished during the parasitic stage. This brief parasitic phase has lasting effects on adult mussel ecology---particularly in influencing their distribution. The movement of host fish occurs on large scales (e.g., >100m) and both their distribution and abundance likely contribute to the spatial patterns ...


Behaviorally-Induced Periodic Cooling Of Avian Embryos , Christopher Robin Olson Jan 2006

Behaviorally-Induced Periodic Cooling Of Avian Embryos , Christopher Robin Olson

Retrospective Theses and Dissertations

For many bird embryos, periodic cooling occurs when the incubating adult leaves the nest to forage, but the effects of periodic cooling on embryo growth, yolk use and metabolism are poorly known. To address this question I conducted incubation experiments on eggs of zebra finches (Taeniopygia guttata ) that were frequently cooled and then rewarmed or were allowed to develop at a constant temperature. After 12 days of incubation, embryo mass and yolk reserves were less in eggs that experienced periodic cooling, compared to controls incubated constantly at 37.5°C. Embryos that regularly cooled to 20°C had higher mass-specific ...


Using Student Generated Qualitative Ecological Models, J. Scott Blackwood, Marion Dresner, Hang-Kwang Luh Jan 2006

Using Student Generated Qualitative Ecological Models, J. Scott Blackwood, Marion Dresner, Hang-Kwang Luh

Environmental Science and Management Faculty Publications and Presentations

In this activity, students construct qualitative models of an ecosystem and use the models to gain a better understanding of direct and indirect ecological interactions. Qualitative modeling is described for use in two procedures, each with different educational goals and student backgrounds in mind. Part 1 is designed with the non-major or beginning ecology student in mind, and is intended both to improve student understanding of the ecosystem of interest and to provide a framework for the instructor to assess student learning. Part 2 is designed for more advanced students of ecology and involves the use of modeling software (POWERPLAY ...


The Planet, 2006, Winter, Sarah M. Kuck, Huxley College Of The Environment, Western Washington University Jan 2006

The Planet, 2006, Winter, Sarah M. Kuck, Huxley College Of The Environment, Western Washington University

The Planet

No abstract provided.