Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.1607551114 |
Range contraction enables harvesting to extinction | |
Burgess, Matthew G.1,2,3,4; Costello, Christopher1,2,3; Fredston-Hermann, Alexa2; Pinsky, Malin L.5; Gaines, Steven D.1,2,3; Tilman, David2,4; Polasky, Stephen4,6 | |
2017-04-11 | |
发表期刊 | PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA |
ISSN | 0027-8424 |
出版年 | 2017 |
卷号 | 114期号:15页码:3945-3950 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Economic incentives to harvest a species usually diminish as its abundance declines, because harvest costs increase. This prevents harvesting to extinction. A known exception can occur if consumer demand causes a declining species' harvest price to rise faster than costs. This threat may affect rare and valuable species, such as large land mammals, sturgeons, and bluefin tunas. We analyze a similar but underappreciated threat, which arises when the geographic area (range) occupied by a species contracts as its abundance declines. Range contractions maintain the local densities of declining populations, which facilitates harvesting to extinction by preventing abundance declines from causing harvest costs to rise. Factors causing such range contractions include schooling, herding, or flocking behaviors-which, ironically, can be predator-avoidance adaptations; patchy environments; habitat loss; and climate change. We use a simple model to identify combinations of range contractions and price increases capable of causing extinction from profitable overharvesting, and we compare these to an empirical review. We find that some aquatic species that school or forage in patchy environments experience sufficiently severe range contractions as they decline to allow profitable harvesting to extinction even with little or no price increase; and some high-value declining aquatic species experience severe price increases. For terrestrial species, the data needed to evaluate our theory are scarce, but available evidence suggests that extinction-enabling range contractions may be common among declining mammals and birds. Thus, factors causing range contraction as abundance declines may pose unexpectedly large extinction risks to harvested species. |
英文关键词 | anthropogenic Allee effect hyperstable endangered species poaching biogeography |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000398789800053 |
WOS关键词 | INDIVIDUAL TRANSFERABLE QUOTAS ; UNIT-EFFORT ; TECHNICAL EFFICIENCY ; FISHERY ; RARITY ; CATCH ; DEMAND ; EXPLOITATION ; ABUNDANCE ; ECONOMICS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204689 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.Univ Calif Santa Barbara, Sustainable Fisheries Grp, Santa Barbara, CA 93106 USA; 2.Univ Calif Santa Barbara, Bren Sch Environm Sci & Management, Santa Barbara, CA 93106 USA; 3.Univ Calif Santa Barbara, Inst Marine Sci, Santa Barbara, CA 93106 USA; 4.Univ Minnesota, Dept Ecol Evolut & Behav, St Paul, MN 55108 USA; 5.Rutgers State Univ, Dept Ecol Evolut & Nat Resources, New Brunswick, NJ 08901 USA; 6.Univ Minnesota, Dept Appl Econ, St Paul, MN 55108 USA |
推荐引用方式 GB/T 7714 | Burgess, Matthew G.,Costello, Christopher,Fredston-Hermann, Alexa,et al. Range contraction enables harvesting to extinction[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2017,114(15):3945-3950. |
APA | Burgess, Matthew G..,Costello, Christopher.,Fredston-Hermann, Alexa.,Pinsky, Malin L..,Gaines, Steven D..,...&Polasky, Stephen.(2017).Range contraction enables harvesting to extinction.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,114(15),3945-3950. |
MLA | Burgess, Matthew G.,et al."Range contraction enables harvesting to extinction".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 114.15(2017):3945-3950. |
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