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The Landscape Similarity Toolbox: New Tools For Optimizing The Location Of Control Sites In Experimental Studies, Thomas E. Dilts, Jian Yang, Peter J. Weisberg Nov 2010

The Landscape Similarity Toolbox: New Tools For Optimizing The Location Of Control Sites In Experimental Studies, Thomas E. Dilts, Jian Yang, Peter J. Weisberg

Articles

Large‐scale manipulative experiments are critically important for linking ecological theory with land management at a relevant spatial scale. Statistically powerful inferential approaches such as the before‐after‐control‐impact design involve pairing a small number of treatment sites with control sites of analogous ecological structure and landscape context. Pairing treatment and control sites that are as analogous as possible is an important step to ensuring that differences are due to a treatment effect. The Landscape Similarity Toolbox provides tools for optimizing the location of potential control sites based upon the spatial characteristics of the treatment site.


Influence Of Prescribed Fire On Ecosystem Biomass, Carbon, And Nitrogen In A Pinyon Juniper Woodland, Benjamin M. Rau, Robin Tausch, Alicia Reiner, Dale W. Johnson, Jeanne C. Chambers, Robert R. Blank, Annmarrie Lucchesi Mar 2010

Influence Of Prescribed Fire On Ecosystem Biomass, Carbon, And Nitrogen In A Pinyon Juniper Woodland, Benjamin M. Rau, Robin Tausch, Alicia Reiner, Dale W. Johnson, Jeanne C. Chambers, Robert R. Blank, Annmarrie Lucchesi

Articles

Increases in pinyon and juniper woodland cover associated with land-use history are suggested to provide offsets for carbon emissions in arid regions. However, the largest pools of carbon in arid landscapes are typically found in soils, and aboveground biomass cannot be considered long-term storage in fire-prone ecosystems. Also, the objectives of carbon storage may conflict with management for other ecosystem services and fuels reduction. Before appropriate decisions can be made it is necessary to understand the interactions between woodland expansion, management treatments, and carbon retention. We quantified effects of prescribed fire as a fuels reduction and ecosystem maintenance treatment on …


Sensitivity Of Wtp Estimates To Definition Of 'Yes': Reinterpreting Expressed Response Intensity, Mimako Kobayashi, Kimberly Rollins, M. D. R. Evans Feb 2010

Sensitivity Of Wtp Estimates To Definition Of 'Yes': Reinterpreting Expressed Response Intensity, Mimako Kobayashi, Kimberly Rollins, M. D. R. Evans

Articles

Willingness to pay (WTP) estimation typically involves some strategy for mapping nondichotomous contingent valuation (CV) responses onto a dichotomous yes/no dependent variable. We propose a new approach to selecting which responses qualify as ‘yes.’ We apply the proposed method to polychotomous CV data for preventative land management programs in the Great Basin. We also estimate WTP using other methods of response recoding found in the literature. By contrasting the results under different approaches, we demonstrate how and why WTP point estimates vary across recoding methods and discuss the comparative advantages of our more generalized recoding approach that is based on …