Classifying private landowners to improve understanding of management decisions and conservation opportunities in urbanizing forested landscapes.

Viewed as coupled natural and human systems, urbanizing forested landscapes exhibit fascinating and complex dynamics, where landowner decisions and biophysical processes together influence conservation and development outcomes. To improve understanding of land management decisions and conservation opportunities on private lands in these landscapes, we developed a landowner typology that accounts for heterogeneity among landowners that goes beyond ownership objectives and investigated its usefulness in predicting individual private landowners' stated intentions to implement diverse land management actions. Using survey responses collected from private landowners in two metropolitan areas in Maine, USA, we focused on understanding differences in owners' stated likelihood of implementing four conservation practices (i.e., forest management plan, conservation easement, water quality protection, and wildlife habitat conservation) and three land tenure actions (i.e., land sales and large and small subdivisions). Cluster analysis based on measures of place attachment values, stewardship beliefs, and forest production objectives revealed four distinct landowner classes that, in turn, increased the explanatory power of our predictive models of management intentions. Our findings support consideration of heterogeneity beyond production objectives to improve understanding of landowner decision-making, the design and performance of conservation programs, and engagement with landowners. Adjusting data, analysis, and communication strategies to recognize these multiple motivations of landowners has potential to advance the science and practice of conserving forested landscapes.

Are wetland regulations cost effective for species protection? A case study of amphibian metapopulations.

Recent declines in amphibian populations have raised concern among conservation biologists, with habitat loss and degradation due to human activities among the leading causes. The most common policies used to protect the habitat of pond-breeding amphibians are wetland regulations that safeguard the wetland itself. However, many amphibians spend much of their adult lives foraging and over-wintering in upland habitats and exist as metapopulations with dispersal among ponds. With no consideration of lands in the dispersal matrix, wetland policies may be ineffective at protecting amphibians or other wetland species that disperse across the landscape. This paper examined the adequacy and cost effectiveness of alternative conservation policies and their corresponding land use patterns on the long-term persistence of pond-breeding amphibians in exurban landscapes. We used computer simulations to compare outcomes of wetland buffer policies and broader landscape-wide conservation policies across a variety of landscape scenarios, and we conducted sensitivity analyses on the model's species parameters in order to generalize our results to other wetland species. Results showed that, in the majority of human-dominated landscapes, some amount of dispersal matrix protection is necessary for long-term species persistence. However, in landscapes with extremely low-intensity land use (e.g., low-density residential housing) and high pond density, wetland buffer policies may be all that is required. It is not always more cost effective to protect core habitat over the dispersal matrix, a common conservation practice. Conservation costs that result from forgone residential, commercial, or agricultural activities can vary substantially but increase in a nonlinear manner regardless of land use zoning. There appears to be a threshold around an average habitat patch occupancy level of 80%, after which opportunity costs rise dramatically.