Ongoing accumulation of plant diversity through habitat connectivity in an 18-year experiment
Deleterious effects of habitat fragmentation and benefits of connecting fragments could be significantly underestimated because changes in colonization and extinction rates that drive changes in biodiversity can take decades to accrue. In a large and well-replicated habitat fragmentation experiment,...
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| Veröffentlicht in: | Science (American Association for the Advancement of Science) 2019-09, Vol.365 (6460), p.1478-1480 |
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| creator | Damschen, Ellen I. Brudvig, Lars A. Burt, Melissa A. Fletcher, Robert J. Haddad, Nick M. Levey, Douglas J. Orrock, John L. Resasco, Julian Tewksbury, Joshua J. |
| description | Deleterious effects of habitat fragmentation and benefits of connecting fragments could be significantly underestimated because changes in colonization and extinction rates that drive changes in biodiversity can take decades to accrue. In a large and well-replicated habitat fragmentation experiment, we find that annual colonization rates for 239 plant species in connected fragments are 5% higher and annual extinction rates 2% lower than in unconnected fragments. This has resulted in a steady, nonasymptotic increase in diversity, with nearly 14% more species in connected fragments after almost two decades. Our results show that the full biodiversity value of connectivity is much greater than previously estimated, cannot be effectively evaluated at short time scales, and can be maximized by connecting habitat sooner rather than later. |
| doi_str_mv | 10.1126/science.aax8992 |
| format | Article |
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In a large and well-replicated habitat fragmentation experiment, we find that annual colonization rates for 239 plant species in connected fragments are 5% higher and annual extinction rates 2% lower than in unconnected fragments. This has resulted in a steady, nonasymptotic increase in diversity, with nearly 14% more species in connected fragments after almost two decades. Our results show that the full biodiversity value of connectivity is much greater than previously estimated, cannot be effectively evaluated at short time scales, and can be maximized by connecting habitat sooner rather than later.</description><identifier>ISSN: 0036-8075</identifier><identifier>EISSN: 1095-9203</identifier><identifier>DOI: 10.1126/science.aax8992</identifier><identifier>PMID: 31604279</identifier><language>eng</language><publisher>United States: American Association for the Advancement of Science</publisher><subject>Biodiversity ; Biodiversity loss ; Colonization ; Conservation of Natural Resources ; Corridors ; Ecological monitoring ; Ecosystem ; Endangered & extinct species ; Experiments ; Extinction ; Fragmentation ; Fragments ; Habitat fragmentation ; Habitats ; Land Settlement ; Pinus ; Plant Dispersal ; Plant diversity ; Plant species ; Plants - classification ; Science & Technology - Other Topics ; South Carolina ; Species ; Species extinction ; Time Factors</subject><ispartof>Science (American Association for the Advancement of Science), 2019-09, Vol.365 (6460), p.1478-1480</ispartof><rights>Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works.</rights><rights>Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. 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| ispartof | Science (American Association for the Advancement of Science), 2019-09, Vol.365 (6460), p.1478-1480 |
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| source | American Association for the Advancement of Science; MEDLINE |
| subjects | Biodiversity Biodiversity loss Colonization Conservation of Natural Resources Corridors Ecological monitoring Ecosystem Endangered & extinct species Experiments Extinction Fragmentation Fragments Habitat fragmentation Habitats Land Settlement Pinus Plant Dispersal Plant diversity Plant species Plants - classification Science & Technology - Other Topics South Carolina Species Species extinction Time Factors |
| title | Ongoing accumulation of plant diversity through habitat connectivity in an 18-year experiment |
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