Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.13435 |
Contrasting effects of summer and winter warming on body mass explain population dynamics in a food-limited Arctic herbivore | |
Albon, Steve D.1; Irvine, R. Justin.1; Halvorsen, Odd2; Langvatn, Rolf3,4; Loe, Leif E.5; Ropstad, Erik6; Veiberg, Vebjorn4; Van Der Wal, Rene7; Bjorkvoll, Eirin M.8,11; Duff, Elizabeth I.9; Hansen, Brage B.8; Lee, Aline M.8,12; Tveraa, Torkild10; Stien, Audun10 | |
2017-04-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY |
ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2017 |
卷号 | 23期号:4 |
文章类型 | Article |
语种 | 英语 |
国家 | Scotland; Norway |
英文摘要 | The cumulative effects of climate warming on herbivore vital rates and population dynamics are hard to predict, given that the expected effects differ between seasons. In the Arctic, warmer summers enhance plant growth which should lead to heavier and more fertile individuals in the autumn. Conversely, warm spells in winter with rainfall (rain-on-snow) can cause `icing', restricting access to forage, resulting in starvation, lower survival and fecundity. As body condition is a `barometer' of energy demands relative to energy intake, we explored the causes and consequences of variation in body mass of wild female Svalbard reindeer (Rangifer tarandus platyrhynchus) from 1994 to 2015, a period of marked climate warming. Late winter (April) body mass explained 88% of the between-year variation in population growth rate, because it strongly influenced reproductive loss, and hence subsequent fecundity (92%), as well as survival (94%) and recruitment (93%). Autumn (October) body mass affected ovulation rates but did not affect fecundity. April body mass showed no long-term trend (coefficient of variation, CV = 8.8%) and was higher following warm autumn (October) weather, reflecting delays in winter onset, but most strongly, and negatively, related to `rain-on-snow' events. October body mass (CV = 2.5%) increased over the study due to higher plant productivity in the increasingly warm summers. Density-dependent mass change suggested competition for resources in both winter and summer but was less pronounced in recent years, despite an increasing population size. While continued climate warming is expected to increase the carrying capacity of the high Arctic tundra, it is also likely to cause more frequent icing events. Our analyses suggest that these contrasting effects may cause larger seasonal fluctuations in body mass and vital rates. Overall our findings provide an important `missing' mechanistic link in the current understanding of the population biology of a keystone species in a rapidly warming Arctic. |
英文关键词 | climate change density dependence extreme events icing nutrition primary production Rangifer reindeer Svalbard weather |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000396836800002 |
WOS关键词 | SENSITIVE REPRODUCTIVE ALLOCATION ; DEER ODOCOILEUS-VIRGINIANUS ; CLIMATE-CHANGE ; DENSITY-DEPENDENCE ; SVALBARD REINDEER ; PEARY CARIBOU ; MIGRATORY CARIBOU ; LINKING CLIMATE ; SNOW EVENTS ; RESPONSES |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
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/17787 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.James Hutton Inst, Aberdeen AB15 8QH, Scotland; 2.Univ Oslo, Nat Hist Museum, Box 1172 Blindern, NO-0318 Oslo, Norway; 3.Univ Courses Svalbard UNIS, POB 156, NO-9171 Longyearbyen, Norway; 4.Norwegian Inst Nat Res NINA, POB 5685 Sluppen, NO-7485 Trondheim, Norway; 5.Norwegian Univ Life Sci, Dept Ecol & Nat Resource Management, POB 5003, NO-1432 As, Norway; 6.Norwegian Univ Life Sci, POB 8146, NO-0033 Oslo, Norway; 7.Univ Aberdeen, Sch Biol Sci, ACES, Aberdeen AB24 3UU, Scotland; 8.Norwegian Univ Sci & Technol NTNU, Dept Biol, CBD, N-7491 Trondheim, Norway; 9.Biomath & Stat Scotland BioSS, Aberdeen AB15 8QH, Scotland; 10.Norwegian Inst Nat Res NINA, Fram Ctr, NO-9296 Tromso, Norway; 11.Norwegian Environm Agcy, POB 5672 Sluppen, N-7485 Trondheim, Norway; 12.Univ Aberdeen, Inst Biol & Environm Sci, Aberdeen AB24 2TZ, Scotland |
推荐引用方式 GB/T 7714 | Albon, Steve D.,Irvine, R. Justin.,Halvorsen, Odd,et al. Contrasting effects of summer and winter warming on body mass explain population dynamics in a food-limited Arctic herbivore[J]. GLOBAL CHANGE BIOLOGY,2017,23(4). |
APA | Albon, Steve D..,Irvine, R. Justin..,Halvorsen, Odd.,Langvatn, Rolf.,Loe, Leif E..,...&Stien, Audun.(2017).Contrasting effects of summer and winter warming on body mass explain population dynamics in a food-limited Arctic herbivore.GLOBAL CHANGE BIOLOGY,23(4). |
MLA | Albon, Steve D.,et al."Contrasting effects of summer and winter warming on body mass explain population dynamics in a food-limited Arctic herbivore".GLOBAL CHANGE BIOLOGY 23.4(2017). |
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