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Title
The global rarity of intact coastal regions
Author(s)
Williams, Brooke A.; Watson, James E. M.; Beyer, Hawthorne L.; Klein, Carissa J.; Montgomery, Jamie; Runting, Rebecca K.; Roberson, Leslie A.; Halpern, Benjamin S.; Grantham, Hedley S.; Kuempel, Caitlin D.; Frazier, Melanie; Venter, Oscar; Wenger, Amelia
Published
Preprint
Publisher
bioRxiv
Published Version DOI
https://doi.org/10.1101/2021.05.10.443490
Abstract
Management of the land-sea interface is considered essential for global conservation and sustainability objectives, as coastal regions maintain natural processes that support biodiversity and the livelihood of billions of people. However, assessments of coastal regions have focused on either strictly the terrestrial or marine realm, and as a consequence, we still have a poor understanding of the overall state of Earth’s coastal regions. Here, by integrating the terrestrial human footprint and marine cumulative human impact maps, we provide a global assessment of the anthropogenic pressures affecting coastal areas. Just 15.5% of coastal areas globally can be considered having low anthropogenic pressure, mostly found in Canada, Russia, and Greenland. Conversely, 47.9% of coastal regions are heavily impacted by humanity with most countries (84.1%) having >50% of their coastal regions degraded. Nearly half (43.3%) of protected areas across coastal regions are exposed to high human pressures. In order to meet global sustainability objectives, we identify those nations that must undertake greater actions to preserve and restore coastal regions so as to ensure global sustainable development objectives can be met.
Keywords
ecology
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PUB27293