DOI: 10.1002/2014GL059789
论文题名: Elevated rates of organic carbon, nitrogen, and phosphorus accumulation in a highly impacted mangrove wetland
作者: Sanders C.J. ; Eyre B.D. ; Santos I.R. ; MacHado W. ; Luiz-Silva W. ; Smoak J.M. ; Breithaupt J.L. ; Ketterer M.E. ; Sanders L. ; Marotta H. ; Silva-Filho E.
刊名: Geophysical Research Letters
ISSN: 0094-10180
EISSN: 1944-9911
出版年: 2014
卷: 41, 期: 7 起始页码: 2475
结束页码: 2480
语种: 英语
英文关键词: accumulation rates
; chronostatigraphy
; coastal Brazil
; coastal eutrophication
; mangrove
; plutonium
Scopus关键词: Carbon
; Forestry
; Isotopes
; Nutrients
; Plutonium
; Sediments
; Accumulation rates
; chronostatigraphy
; coastal Brazil
; Coastal eutrophication
; mangrove
; Eutrophication
; accretion
; accumulation rate
; chronostratigraphy
; coastal wetland
; eutrophication
; mangrove
; organic carbon
; organic nitrogen
; organic phosphorus
; plutonium
; pristine environment
; radionuclide
; sediment chemistry
; tracer
; Accumulation
; Carbon
; Eutrophication
; Forestry
; Isotopes
; Mangrove
; Nutrients
; Sediments
; Brazil
; algae
英文摘要: The effect of nutrient enrichment on mangrove sediment accretion and carbon accumulation rates is poorly understood. Here we quantify sediment accretion through radionuclide tracers to determine organic carbon (OC), total nitrogen (TN), and total phosphorus (TP) accumulation rates during the previous 60-years in both a nutrient-enriched and a pristine mangrove forest within the same geomorphological region of southeastern Brazil the forest receiving high nutrient loads has accumulated OC, TN, and TP at rates that are fourfold, twofold, and eightfold respectively, higher than those from the undisturbed mangrove. Organic carbon and TN stable isotopes (δ13C and δ15N) reflect an increased presence of organic matter (OM) originating with either phytoplankton, benthic algae, or another allochthonous source within the more rapidly accumulated sediments of the impacted mangrove. This suggests that the accumulation rate of OM in eutrophic mangrove systems may be enhanced through the addition of autochthonous and allochthonous nonmangrove material. Key Points High OC, N and P accumulation from impacted compared to pristine mangrove Carbon and N stable isotopes indicate diversified source of OM Mangrove migration may increase global OC, N, and P burial rates © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84897956453&doi=10.1002%2f2014GL059789&partnerID=40&md5=4353dd5e978e1f0193f6c524c58e8bfb
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7444
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: Centre for Coastal Biogeochemistry Research, School of Environment, Science and Engineering, Southern Cross University, Lismore, NSW, Australia
Recommended Citation:
Sanders C.J.,Eyre B.D.,Santos I.R.,et al. Elevated rates of organic carbon, nitrogen, and phosphorus accumulation in a highly impacted mangrove wetland[J]. Geophysical Research Letters,2014-01-01,41(7).