气候变化领域集成服务门户(CCPortal): Persistence of Biogeochemical Alterations of Deep-Sea Sediments by Bottom Trawling

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DOI	10.1029/2020GL091279
	Persistence of Biogeochemical Alterations of Deep-Sea Sediments by Bottom Trawling
	Paradis S.; Goñi M.; Masqué P.; Durán R.; Arjona-Camas M.; Palanques A.; Puig P.
发表日期	2021
ISSN	0094-8276
卷号	48 期号:2
英文摘要	Bottom trawling grounds have been expanding to deeper areas of the oceans since the mid-XXth century, and mitigating strategies aimed to protect fish stocks, such as temporal trawling closures, have recently been implemented. Here we investigated the biogeochemical properties of sediment from a deep-sea trawling ground in Palamós Canyon (NW Mediterranean) to assess the effects of a 2-months trawling closure in the recovery of sedimentary organic matter. In comparison to untrawled areas, the continuous erosion and sediment mixing in trawling grounds led to coarser reworked sediments impoverished in organic carbon (∼30% loss) and promoted the degradation of labile compounds (52–70% loss). These impacts persisted after the temporal trawling closure, highlighting that this management strategy is insufficient to restore the seafloor. Considering the continuous expansion of bottom trawling grounds, this activity could have significant and irreversible biogeochemical impacts on ocean margins at a global scale, hampering their carbon burial capacity. © 2020. The Authors.
英文关键词	Biogeochemistry; Fisheries; Organic carbon; Biogeochemical; Biogeochemical property; Bottom trawling; Deep sea sediment; Labile compounds; Management strategies; NW Mediterranean; Sedimentary organic matter; Sediments; Matthiola
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169189
作者单位	Institute of Environmental Science and Technology, Universitat Autònoma de Barcelona, Bellaterra, Spain; Physics Department, Universitat Autònoma de Barcelona, Bellaterra, Spain; Marine Sciences Institute, Consejo Superior de Investigaciones Científicas, Barcelona, Spain; College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, United States; School of Natural Sciences, Centre for Marine Ecosystems Research, Edith Cowan University, Joondalup, WA, Australia; International Atomic Energy Agency, Principality of Monaco, Monaco; Department of Earth and Ocean Dynamics, University of Barcelona, Barcelona, Spain
推荐引用方式 GB/T 7714	Paradis S.,Goñi M.,Masqué P.,et al. Persistence of Biogeochemical Alterations of Deep-Sea Sediments by Bottom Trawling[J],2021,48(2).
APA	Paradis S..,Goñi M..,Masqué P..,Durán R..,Arjona-Camas M..,...&Puig P..(2021).Persistence of Biogeochemical Alterations of Deep-Sea Sediments by Bottom Trawling.Geophysical Research Letters,48(2).
MLA	Paradis S.,et al."Persistence of Biogeochemical Alterations of Deep-Sea Sediments by Bottom Trawling".Geophysical Research Letters 48.2(2021).