J
Jonas Geldmann
Researcher at University of Cambridge
Publications - 58
Citations - 4687
Jonas Geldmann is an academic researcher from University of Cambridge. The author has contributed to research in topics: Protected area & Biodiversity. The author has an hindex of 20, co-authored 47 publications receiving 3249 citations. Previous affiliations of Jonas Geldmann include University of Copenhagen & United Nations Environment Programme.
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Journal ArticleDOI
Effectiveness of terrestrial protected areas in reducing habitat loss and population declines
Jonas Geldmann,Megan Barnes,Lauren Coad,Ian D. Craigie,Marc Hockings,Neil D. Burgess,Neil D. Burgess +6 more
TL;DR: Overall, available evidence suggests that PAs deliver positive outcomes, but there remains a limited evidence base, and weak understanding of the conditions under which PAs succeed or fail to deliver conservation outcomes.
Journal ArticleDOI
Capacity shortfalls hinder the performance of marine protected areas globally
David Gill,Michael B. Mascia,Gabby N. Ahmadia,Louise Glew,Sarah E. Lester,Megan Barnes,Ian D. Craigie,Emily S. Darling,Christopher M. Free,Jonas Geldmann,Susie Holst,Olaf P. Jensen,Alan T. White,Xavier Basurto,Lauren Coad,Ruth D. Gates,Greg Guannel,Peter J. Mumby,Hannah Thomas,Sarah Whitmee,Stephen Woodley,Helen E. Fox +21 more
TL;DR: It is reported that many MPAs failed to meet thresholds for effective and equitable management processes, with widespread shortfalls in staff and financial resources; continued global expansion of MPAs without adequate investment in human and financial capacity is likely to lead to sub-optimal conservation outcomes.
Journal ArticleDOI
Shortfalls and Solutions for Meeting National and Global Conservation Area Targets
Stuart H. M. Butchart,Martin Clarke,Robert J. Smith,Rachel E. Sykes,Jörn P. W. Scharlemann,Mike Harfoot,Mike Harfoot,Graeme M. Buchanan,Ariadne Angulo,Andrew Balmford,Bastian Bertzky,Thomas M. Brooks,Thomas M. Brooks,Thomas M. Brooks,Kent E. Carpenter,Mia T. Comeros-Raynal,John B. Cornell,G. Francesco Ficetola,Lincoln Fishpool,Richard A. Fuller,Jonas Geldmann,Heather Harwell,Heather Harwell,Craig Hilton-Taylor,Michael R. Hoffmann,Michael R. Hoffmann,Ackbar Joolia,Lucas Joppa,Naomi Kingston,Ian May,Amy Milam,Beth Polidoro,Beth Polidoro,Gina M. Ralph,Nadia I. Richman,Carlo Rondinini,Daniel B. Segan,Daniel B. Segan,Benjamin Skolnik,Mark Spalding,Simon N. Stuart,Andy Symes,Joseph Taylor,Piero Visconti,James E. M. Watson,James E. M. Watson,Louisa Wood,Louisa Wood,Neil D. Burgess,Neil D. Burgess +49 more
TL;DR: In this paper, the authors estimate that PAs currently cover 14.6% of terrestrial and 2.8% of marine extent, but 59-68% of ecoregions, 77-78% of important sites for biodiversity, and 57% of 25,380 species have inadequate coverage.
Protected Planet Report 2014
Diego Juffe-Bignoli,Neil D. Burgess,Heather Bingham,Elise M. S. Belle,M.G. de Lima,Marine Deguignet,Bastian Bertzky,Amy Milam,Javier Martínez-López,Edward Lewis,April Eassom,Sylvia Wicander,Jonas Geldmann,A. van Soesbergen,Andy Arnell,Brian O'Connor,Sun Hwa Park,Y.N. Shi,Fiona Danks,Brian MacSharry,Naomi Kingston +20 more
Journal ArticleDOI
A global-level assessment of the effectiveness of protected areas at resisting anthropogenic pressures.
TL;DR: This analysis of protected areas across 152 countries finds that compared with matched unprotected areas, PAs have on average not reduced a compound index of pressure change over the past 15 y, and cautions against the rapid establishment of new PAs without simultaneously addressing the conditions needed to enable their success.