DOI: 10.1007/s10533-014-0011-1
Scopus记录号: 2-s2.0-84918825414
论文题名: Testing the long-term stability of marine isoscapes in shelf seas using jellyfish tissues
作者: MacKenzie K.M. ; Longmore C. ; Preece C. ; Lucas C.H. ; Trueman C.N.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 121, 期: 2 起始页码: 441
结束页码: 454
语种: 英语
英文关键词: Food web
; Movement
; North Sea
; Stable isotope
; Trophic
Scopus关键词: Animalia
; Scyphozoa
英文摘要: Maps of the spatial distribution of stable isotope ratios across wide geographic areas (isoscapes) are increasingly used to study mechanisms of nutrient flux, movements of animals, and to improve trophic information derived from stable isotope analyses. Isoscapes are usually constructed from reference samples collected from known geographic positions, a time consuming and costly process. In this study, we test the temporal stability of isoscapes of carbon and nitrogen isotopes across the North Sea over a ten-year period. Using jellyfish tissues as reference organisms, we show that hydrodynamic and biogeochemical processes controlling the distribution of carbon and nitrogen isotope values, and thus that the underlying isoscapes, are temporally stable. Remarkably, broad geographic variations in stable carbon and nitrogen isotope distributions across the North Sea are consistent with previously published variations seen in archaeological cod bones from the ninth to seventeenth centuries, despite dramatic changes in land use in the past 1,000 years. Stable isotope-based studies of trophic interactions or movements in animals with lifespans of a year or more in shelf ecosystems can consequently be referenced to previously published isoscape models, and do not require construction of temporally explicit isotope baseline corrections. Scyphomedusan jellyfish are excellent reference organisms for ecological stable isotope analyses in pelagic ecosystems, due to their widespread distributions, well-defined life histories, and fast tissue growth. © 2014, Springer International Publishing Switzerland. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83640
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Ocean and Earth Science, National Oceanography Centre, Southampton, University of Southampton, Waterfront Campus, SO14 3ZH, Southampton, United Kingdom
Recommended Citation:
MacKenzie K.M.,Longmore C.,Preece C.,et al. Testing the long-term stability of marine isoscapes in shelf seas using jellyfish tissues[J]. Biogeochemistry,2014-01-01,121(2)