DOI: 10.5061/dryad.tc45g
title: Data from: Multi-purpose habitat networks for short-range and long-range connectivity: a new method combining graph and circuit connectivity

description: Biodiversity conservation in landscapes undergoing climate and land-use
 changes requires designing multipurpose habitat networks that connect the
 movements of organisms at multiple spatial scales. Short-range
 connectivity within habitat networks provides organisms access to
 spatially distributed resources, reduces local extinctions and increases
 recolonization of habitat fragments. Long-range connectivity across
 habitat networks facilitates annual migrations and climate-driven range
 shifts. We present a method for identifying a multipurpose network of
 forest patches that promotes both short- and long-range connectivity. Our
 method uses both graph-theoretic analyses that quantify network
 connectedness and circuit-based analyses that quantify network
 traversability as the basis for identifying spatial conservation
 priorities on the landscape. We illustrate our approach in the
 agroecosystem, bordered by the Laurentian and Appalachian mountain ranges,
 that surrounds the metropolis of Montreal, Canada. We established forest
 conservation priorities for the ovenbird, a Neotropical migrant, sensitive
 to habitat fragmentation that breeds in our study area. All connectivity
 analyses were based on the same empirically informed resistance surface
 for ovenbird, but habitat pixels that facilitated short- and long-range
 connectivity requirements had low spatial correlation. The trade-off
 between connectivity requirements in the final ranking of conservation
 priorities showed a pattern of diminishing returns such that beyond a
 threshold, additional conservation of long-range connectivity had
 decreased effectiveness on the conservation of short-range connectivity.
 Highest conservation priority was assigned to a series of stepping stone
 forest patches across the study area that promote traversability between
 the bordering mountain ranges and to a collection of small forest
 fragments scattered throughout the study area that provide connectivity
 within the agroecosystem. Landscape connectivity is important for the
 ecology and genetics of populations threatened by climate change and
 habitat fragmentation. Our method has been illustrated as a means to
 conserve two critical dimensions of connectivity for a single species, but
 it is designed to incorporate a variety of connectivity requirements for
 many species. Our approach can be tailored to local, regional and
 continental conservation initiatives to protect essential species
 movements that will allow biodiversity to persist in a changing climate.
description: Landscape resistance for
 the ovenbirdThis is a 30m resolution
 landscape resistance raster for the ovenbird. It serves as the basis of
 network-based and circuit-based connectivity analyses. Resistance values
 increase from forest to non-vegetated pixels: forest pixels have a
 resistance of 1; open, vegetated pixels within 30 m of forest have a
 resistance of 14; remaining open, vegetated pixels have a resistance of
 27; non-vegetated pixels have a resistance of 100.LandscapeResistanceSEAU.tifHabitat quality for the ovenbirdThis is a 30m resolution habitat quality map for the ovenbird. See Appendix S2 for details.HabitatQualitySEAU.tifSaint Lawrence Lowlands EcoregionThis is a 30m resolution binary raster of the ecoregion within which we ranked conservation priorities based on multiple habitat connectivity criteria.StLawrenceLowlandsEcoregion.tif