Johnson R.C.,Washington State University |
Erickson V.J.,Pacific Northwest Region |
Mandel N.L.,Pacific Northwest Research Station |
Bradley St Clair J.,Pacific Northwest Research Station |
Vance-Borland K.W.,The Conservation Planning Institute
Botany | Year: 2010
Seed transfer zones ensure that germplasm selected for restoration is suitable and sustainable in diverse environments. In this study, seed zones were developed for mountain brome (Bromus carinatus Hook. & Arn.) in the Blue Mountains of northeastern Oregon and adjoining Washington. Plants from 148 Blue Mountain seed source locations were evaluated in common-garden studies at two contrasting test sites. Data on phenology, morphology, and production were collected over two growing seasons. Plant traits varied significantly and were frequently correlated with annual precipitation and annual maximum temperature at seed source locations (P < 0.05). Plants from warmer locations generally had higher dry matter production, longer leaves, wider crowns, denser foliage, and greater plant height than those from cooler locations. Regression models of environmental variables with the first two principal components (PC 1 and PC 2) explained 46% and 40% of the total variation, respectively. Maps of PC 1 and PC 2 generally corresponded to elevation, temperature, and precipitation gradients. The regression models developed from PC 1 and PC 2 and environmental variables were used to map seed transfer zones. These maps will be useful in selecting mountain brome seed sources for habitat restoration in the Blue Mountains.
Ager A.A.,U.S. Department of Agriculture |
A. Day M.,Oregon State University |
Finney M.A.,U.S. Department of Agriculture |
Vance-Borland K.,Oregon State University |
And 2 more authors.
Forest Ecology and Management | Year: 2014
We develop the idea of risk transmission from large wildfires and apply network analyses to understand its importance on a 0.75 million ha US national forest. Wildfires in the western US frequently burn over long distances (e.g., 20-50. km) through highly fragmented landscapes with respect to ownership, fuels, management intensity, population density, and ecological conditions. The collective arrangement of fuel loadings in concert with weather and suppression efforts ultimately determines containment and the resulting fire perimeter. While spatial interactions among land parcels in terms of fire spread and intensity have been frequently noted by fire managers, quantifying risk and exposure transmission has not been attempted. In this paper we used simulation modeling to quantify wildfire transmission and built a transmission network consisting of land designations defined by national forest management designations and ownership. We then examined how a forest-wide fuel management program might change the transmission network and associated metrics. The results indicated that the size, shape, and fuel loading of management designations affected their exposure to wildfire from other designations and ownerships. Manipulating the fuel loadings via simulated forest fuel treatments reduced the wildfire transmitted among the land designations, and changed the network density as well. We discuss how wildfire transmission has implications for creating fire adapted communities, conserving biodiversity, and resolving competing demands for fire-prone ecosystem services. © 2014 Elsevier B.V.
Vance-Borland K.,The Conservation Planning Institute |
Holley J.,Network Weaving
Conservation Letters | Year: 2011
Conservation science frequently does not lead to conservation action; collaborations between conservation practitioners and stakeholders might support greater conservation success. We describe stakeholder social network analysis (SNA) and facilitation in coastal Oregon, United States. We surveyed 47 people, who named 297 other sustainable natural resources collaborators. Network analysis found cohesive ecosystem-based groups and groups defined by organization type, collaboration between groups, actors who bridged groups, and a core-periphery network structure. Cross-boundary collaboration analysis revealed that people in the estuary group and business people were isolated. To facilitate network change, we discussed network maps and analyses with participants, elicited their ideas about new relationships to enhance their work, and introduced people who might have common interests. New participantorganized projects to emerge included: a successful grant proposal; an online participant skills directory; collaboration between the local solid waste program and the state agricultural extension office; and two participants doing ongoing interventions. SNA and facilitation may make valuable contributions to conservation outcomes. © 2011 Wiley Periodicals, Inc.
Mannetti L.M.,Stellenbosch University |
Esler K.J.,Stellenbosch University |
Knight A.T.,Imperial College London |
Knight A.T.,Nelson Mandela Metropolitan University |
Vance-Borland K.,The Conservation Planning Institute
Human Ecology | Year: 2015
Adaptive co-management has been suggested as one way to enable sustainable management of common pool resources. A knowledge gap exists, however, in how different kinds of co-management structures relate to sustainable resource management and adaptability. Using a network approach we examine the issues of social capital, leadership and traditional knowledge and how these contribute to collective action at the community level. The current social structure of the ≠Khomani Bushmen community, South Africa, was assessed. Overall network cohesion was found to be low, which potentially impedes effective governance, while high fragmentation hampers the possibility of joint action. Individual characteristics, such as gender and ethnicity affect knowledge exchange, while a correlation was found between number of ties to central actors and perceived knowledge of how to use plants sustainably. The study offers insight into how traditional ecological knowledge, social capital and leadership affect possibilities for collective action and co-management of natural resources. © 2015 Springer Science+Business Media New York.
Mills M.,University of Queensland |
Mills M.,James Cook University |
Alvarez-Romero J.G.,James Cook University |
Vance-Borland K.,The Conservation Planning Institute |
And 5 more authors.
Biological Conservation | Year: 2014
Social networks play an important role in facilitating effective and sustained connections between people responsible for regional conservation plans and those responsible for local conservation actions. Yet, few studies have utilized social network analysis in systematic conservation planning initiatives; this, in spite of social network analysis being developed as a structural and relational approach to describe and analyze the characteristics of patterns of relationships that make collaborative efforts more or less effective at solving natural resource management problems. Systematic conservation planning provides a framework for allocating actions in time and space to promote the conservation of biodiversity. Our study discusses three potential contributions of social network analysis to systematic conservation planning: identifying stakeholders and their roles in social networks, and characterizing relationships between them; designing and facilitating strategic networking to strengthen linkages between local and regional conservation initiatives; and prioritizing conservation actions using measures of social connectivity alongside ecological data. We propose that social network analysis has the potential to be a valuable tool to support decision making in conservation planning. We identify challenges and future research questions to be addressed to allow the integration of social network analysis into conservation planning processes. © 2013.