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- Acclimatization (Plants) (1)
- Beavers -- Oregon (1)
- Biodiversity (1)
- Biodiversity conservation (1)
- Carbon dioxide (1)
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- Cavity-nesting birds -- Habitat -- Oregon (1)
- Douglas fir -- Climatic factors (1)
- Douglas fir -- Seedlings -- Growth (1)
- Ecology -- Economic aspects (1)
- Ecosystem management (1)
- Ecosystem services -- Economic aspects (1)
- Industrial management -- Environmental aspects (1)
- Jane Jacobs. You Can't Eat GNP: Economics As If Ecology Mattered -- Reviews (1)
- Norman Myers and Jennifer Kent. Perverse Subsidies: How Tax Dollars Can Undercut the Environment and the Economy -- Reviews (1)
- Ponds -- Oregon (1)
- Portland (Or.) -- Politics and government (1)
- Portland (Or.) -- Social conditions (1)
- River sediments -- Oregon (1)
- Sediment transport -- Environmental aspects -- Oregon (1)
- Snags (Forestry) -- Oregon (1)
- Stream invertebrates -- Effect of sediments on -- Oregon (1)
- Sustainable agriculture (1)
- Urban policy -- Oregon -- Portland (1)
- Urban runoff -- Environmental aspects -- Oregon (1)
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Articles 1 - 9 of 9
Full-Text Articles in Physical Sciences and Mathematics
Snags In Beaver Ponds And Indications Of Use By Primary Cavity-Nesting Birds In The Western Oregon Cascades, Jacqueline I. Fern
Snags In Beaver Ponds And Indications Of Use By Primary Cavity-Nesting Birds In The Western Oregon Cascades, Jacqueline I. Fern
Dissertations and Theses
Dead trees, or snag , are used by primary cavity-nesting birds for nesting, foraging, and roosting and are essential habitat for the e species. Snags formed in beaver ponds due to flooded conditions are utilized by a variety of woodpecker species. In this study I quantified and compared snag density, size, decay characteristics, and excavations in beaver ponds and in forested riparian sites without beaver influence (reference sites) in the western Oregon Cascades. Beaver ponds were treated as a pooled group (n=8) and also categorized into old (n=5) and new (n=3) classes based on decay indicators. Reference sites (n=8) were …
Visions, Values, Valuation And The Need For An Ecological Economics, Robert Costanza
Visions, Values, Valuation And The Need For An Ecological Economics, Robert Costanza
Institute for Sustainable Solutions Publications and Presentations
Practical problem solving in complex, humandominated ecosystems requires the integration of three elements: (1) active and ongoing envisioning of both how the world works and how we would like the world to be, (2) systematic analysis appropriate to and consistent with the vision, and (3) implementation appropriate to the vision. Scientists generally focus on only the second of these steps, but integrating all three is essential to both good science and effective management. Subjective values enter in the vision element, both in terms of the formation of broad social goals and in the creation of a preanalytic vision,which necessarily precedes …
Government Sponsored Perversity. Review Of: Perverse Subsidies: How Tax Dollars Can Undercut The Environment And The Economy By Norman Myers And Jennifer Kent, Robert Costanza
Institute for Sustainable Solutions Publications and Presentations
Book review of Perverse Subsidies: How Tax Dollars Can Undercut the Environment and the Economy. Norman Myers and Jennifer Kent. Island Press, Washington (DC), 2001.
Seasonal Patterns Of Photosynthesis In Douglas Fir Seedlings During The Third And Fourth Year Of Exposure To Elevated Co2 And Temperature, James D. Lewis, Melissa S. Lucash, David M. Olszyk, David T. Tingey
Seasonal Patterns Of Photosynthesis In Douglas Fir Seedlings During The Third And Fourth Year Of Exposure To Elevated Co2 And Temperature, James D. Lewis, Melissa S. Lucash, David M. Olszyk, David T. Tingey
Environmental Science and Management Faculty Publications and Presentations
The interactive effects of elevated atmospheric CO2 and temperature on seasonal patterns of photosynthesis in Douglas fir (Psuedotsuga menziesii (Mirb.) Franco) seedlings were examined. Seedlings were grown in sunlit chambers controlled to track either ambient (~400 p.p.m.) CO2 or ambient +200 p.p.m. CO2, and either ambient temperature or ambient +4 °C. Light-saturated net photosynthetic rates were measured approximately monthly over a 21 month period. Elevated CO2 increased net photosynthetic rates by an average of 21% across temperature treatments during both the 1996 hydrologic year, the third year of exposure, and the 1997 hydrologic year. Elevated …
Building A Sustainable Future For Portland, City Club Of Portland (Portland, Or.)
Building A Sustainable Future For Portland, City Club Of Portland (Portland, Or.)
City Club of Portland
No abstract provided.
Economics As A Life Science: Review Of You Can't Eat Gnp: Economics As If Ecology Mattered By Eric A. Davidson And The Nature Of Economies By Jane Jacobs, Robert Costanza
Economics As A Life Science: Review Of You Can't Eat Gnp: Economics As If Ecology Mattered By Eric A. Davidson And The Nature Of Economies By Jane Jacobs, Robert Costanza
Institute for Sustainable Solutions Publications and Presentations
Two Book Reviews: You Can?t Eat GNP: Economics As If Ecology Mattered by Eric A. Davidson and The Nature of Economies by Jane Jacobs
Private Agro-Environmental Management: Green Business Rising, David E. Ervin, Frank Casey
Private Agro-Environmental Management: Green Business Rising, David E. Ervin, Frank Casey
Economics Faculty Publications and Presentations
This article focuses on the role of business environmental management (BEM) in the food industry. Types of BEM; Benefits of implementing the practice; Importance of giving producers flexibility; How private strategies and ventures may succeed. This article is adapted from a keynote address prepared for Challenging the Agricultural Economics Paradigm, a symposium honoring Luther G. Tweeten, Anderson Professor of Agricultural Marketing, Trade and Policy, September 10-11, 2000, The Ohio State University, Columbus, Ohio.
Biodiversity: Connecting With The Tapestry Of Life, Elise F. Granek, Francisco Dallmeier, Alfonso Alonso, Peter H. Raven
Biodiversity: Connecting With The Tapestry Of Life, Elise F. Granek, Francisco Dallmeier, Alfonso Alonso, Peter H. Raven
Environmental Science and Management Faculty Publications and Presentations
Biodiversity is the extraordinary variety of life on Earth – from genes and species to ecosystems and the valuable functions they perform. E.O. Wilson, the noted biologist and author who coined the term “biodiversity,” explains it as “the very stuff of life.” Species and the ecosystems in which they live are indelibly linked. Conversion or loss of ecosystems inevitably impairs the species that depend on them. As well, changes in the life cycle of one species could impact the life cycles of many other species (including humans), alter ecosystems and ecosystem functions, and contribute to local, regional and, ultimately, global …
The Impact Of Fine Sediment On Stream Macroinvertebrates In Urban And Rural Oregon Streams, Raymond S. Hoy
The Impact Of Fine Sediment On Stream Macroinvertebrates In Urban And Rural Oregon Streams, Raymond S. Hoy
Dissertations and Theses
Urbanization, often characterized by high impervious surface area, can result in excessive inputs of fine sediments into urban streams. Excessive fine sediments can blanket the stream bed filling the interstitial space in the substratum, which may have adverse effects on stream biota. A field survey was conducted in Oregon urban and non-urban basins to investigate the relationship between fine sediments and stream macroinvertebrates. Physical, chemical, and biological data were collected from 59 stream sites in two urban and two rural streams. The stream sites fulfilled a continuous sediment gradient, which ranged from a low of 2% of fine sediment in …