Only ten percent of the global terrestrial protected area network is connected via intact land

  title={Only ten percent of the global terrestrial protected area network is connected via intact land},
  author={Michelle S. Ward and Santiago Saura and Brooke A. Williams and Juan Pablo Ram{\'i}rez-Delgado and Nur Arafeh-Dalmau and James R. Allan and Oscar Venter and Gr{\'e}goire Dubois and James E. M. Watson},
Land free of direct anthropogenic disturbance is considered essential for achieving biodiversity conservation outcomes but is rapidly eroding. In response, many nations are increasing their protected area estates but little consideration is given to the context of the surrounding landscape. This is despite the fact that connectivity between protected areas is critical in a changing climate and mandated in international protected area targets. By utilizing the latest human pressure assessment… Expand
2 Citations
Functional Connectivity of the World’s Protected Areas
It is shown that the majority of critical connectivity areas (CCAs) remain unprotected, and it is found that reducing the human footprint may improve national PA-connectivity more than adding new PAs; however, both strategies are critical for improving and preserving connectivity in places where the predicted flow of animal movement is highly concentrated. Expand
Connectivity metrics for conservation planning and monitoring
35 metrics that can quantify connectivity of focal patches or of networks and monitor changes over time in an ecoscape (landscape or seascape) are described and a decision tree is provided to select which of these metrics are most appropriate for a given conservation goal and broad e coscape context. Expand


One-third of global protected land is under intense human pressure
Use of the most comprehensive global map of human pressure shows that 6 million square kilometers (32.8%) of protected land is under intense human pressure, showing that they are potentially effective, at least in some nations. Expand
Effectiveness of the global protected area network in representing species diversity
It is shown that the global network of protected areas is far from complete, and the inadequacy of uniform—that is, ‘one size fits all’—conservation targets is demonstrated, in the first global gap analysis assessing the effectiveness ofprotected areas in representing species diversity. Expand
Protected area connectivity: Shortfalls in global targets and country-level priorities
The first global evaluation of countries' progress towards Aichi Target 11 of the Convention on Biological Diversity that is to have at least 17% of the land covered by well-connected PA systems by 2020 is provided, using the Protected Connected (ProtConn) indicator. Expand
The capacity of Australia's protected-area system to represent threatened species.
How Australia's terrestrial protected- area system overlaps with the geographic distributions of threatened species is assessed and this overlap is compared against a model that randomly placed protected areas across the continent and a spatially efficient model to maximize threatened species' representation within the protected-area estate. Expand
Widespread shortfalls in protected area resourcing undermine efforts to conserve biodiversity
Protected areas (PAs) are a key tool in efforts to safeguard biodiversity against increasing anthropogenic threats. As signatories to the 2011–2020 Strategic Plan for Biodiversity, 196 nationsExpand
The essential role of other effective area-based conservation measures in achieving big bold conservation targets
Continued biodiversity loss has prompted calls for half of the planet to be set aside for nature – including E. O Wilson's “Half-Earth” approach and the Wild Foundation's “Nature Needs Half”Expand
Shortfalls and Solutions for Meeting National and Global Conservation Area Targets
Governments have committed to conserving 17% of terrestrial and 10% of marine environments globally, especially “areas of particular importance for biodiversity” through “ecologically representative”Expand
The exceptional value of intact forest ecosystems
It is argued that maintaining and, where possible, restoring the integrity of dwindling intact forests is an urgent priority for current global efforts to halt the ongoing biodiversity crisis, slow rapid climate change and achieve sustainability goals. Expand
Substantial losses in ecoregion intactness highlight urgency of globally coordinated action
Human activities are altering natural areas worldwide. While our ability to map these activities at fine scales is improving, a simplistic binary characterization of habitat and non-habitat with aExpand
Local biodiversity is higher inside than outside terrestrial protected areas worldwide
Using a new global biodiversity database with unprecedented geographic and taxonomic coverage, four biodiversity measures are compared at sites sampled in multiple land uses inside and outside protected areas to reinforce the global importance of protected areas but suggest that protection does not consistently benefit species with small ranges or increase the variety of ecological niches. Expand