JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. Clark University is collaborating with JSTOR to digitize, preserve and extend access to Economic Geography.
Models that couple habitat suitability with demographic processes offer a potentially improved approach for estimating spatial distributional shifts and extinction risk under climate change. Applying such an approach to five species of Australian plants with contrasting demographic traits, we show that: (i) predicted climate‐driven changes in range area are sensitive to the underlying habitat model, regardless of whether demographic traits and their interaction with habitat patch configuration are modeled explicitly; and (ii) caution should be exercised when using predicted changes in total habitat suitability or geographic extent to infer extinction risk, because the relationship between these metrics is often weak. Measures of extinction risk, which quantify threats to population persistence, are particularly sensitive to life‐history traits, such as recruitment response to fire, which explained approximately 60% of the deviance in expected minimum abundance. Dispersal dynamics and habitat patch structure have the strongest influence on the amount of movement of the trailing and leading edge of the range margin, explaining roughly 40% of modeled structural deviance. These results underscore the need to consider direct measures of extinction risk (population declines and other measures of stochastic viability), as well as measures of change in habitat area, when assessing climate change impacts on biodiversity. Furthermore, direct estimation of extinction risk incorporates important demographic and ecosystem processes, which potentially influence species’ vulnerability to extinction due to climate change.
Recent debates within political ecology have motivated new field. In the introduction to this special issue, we vital challenges faced today, and present a new set of studies that respond to these concerns. We conceptualize power as a social relation built on the asymmetrical distribution of resources and risks and locate power in the interactions among, and the processes that constitute, people, places, and resources. Politics, then, are found in the practices and mechanisms through which such power is circulated. The focus here is on politics related to the environment, understood as biophysical phenomena, together with human knowledge and practice. To apply these concepts, we promote multiscale research models that articulate selected ecological phenomena and local social processes, together with regional and global forces and ideas. We also advocate methods for research and practice that are sensitive to relations of difference and power among and within social groups. Rather than dilute ecological dimensions of study, this approach aims to strengthen our ability to account for the dialectical processes through which humans appropriate, contest, and manipulate the world around them.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.