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U.S.A."],"published-print":{"date-parts":[[2016,11,29]]},"abstract":"<jats:title>Significance<\/jats:title>\n          <jats:p>Kelp forests support diverse and productive ecological communities throughout temperate and arctic regions worldwide, providing numerous ecosystem services to humans. Literature suggests that kelp forests are increasingly threatened by a variety of human impacts, including climate change, overfishing, and direct harvest. We provide the first globally comprehensive analysis of kelp forest change over the past 50 y, identifying a high degree of variation in the magnitude and direction of change across the geographic range of kelps. These results suggest region-specific responses to global change, with local drivers playing an important role in driving patterns of kelp abundance. Increased monitoring aimed at understanding regional kelp forest dynamics is likely to prove most effective for the adaptive management of these important ecosystems.<\/jats:p>","DOI":"10.1073\/pnas.1606102113","type":"journal-article","created":{"date-parts":[[2016,11,15]],"date-time":"2016-11-15T03:30:41Z","timestamp":1479180641000},"page":"13785-13790","update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":684,"title":["Global patterns of kelp forest change over the past half-century"],"prefix":"10.1073","volume":"113","author":[{"given":"Kira A.","family":"Krumhansl","sequence":"first","affiliation":[{"name":"School of Resource and Environmental Management, Hakai Institute, Simon Fraser University, Burnaby, BC, Canada V5A 1S6;"}]},{"given":"Daniel K.","family":"Okamoto","sequence":"additional","affiliation":[{"name":"School of Resource and Environmental Management, Hakai Institute, Simon Fraser University, Burnaby, BC, Canada V5A 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