DOI: 10.1016/j.marpolbul.2016.10.010
Scopus记录号: 2-s2.0-85009061093
论文题名: Detecting, sourcing, and age-dating dredged sediments on the open shelf, southern California, using dead mollusk shells
作者: Bizjack M.T. ; Kidwell S.M. ; Velarde R.G. ; Leonard-Pingel J. ; Tomašových A.
刊名: Marine Pollution Bulletin
ISSN: 0025-326X
EISSN: 1879-3363
出版年: 2017
卷: 114, 期: 1 起始页码: 448
结束页码: 465
语种: 英语
英文关键词: Benthic response
; Dead shell assemblages
; Live-dead discordance
; Mollusks
; Ocean disposal
; Paleoecology
; Taphonomy
Scopus关键词: Molluscs
; Sea level
; Sediments
; Shells (structures)
; Benthic response
; Dead shell assemblages
; Live-dead discordance
; Mollusks
; Ocean disposal
; Paleoecology
; Taphonomy
; Dredging
; benthos
; detection method
; dredge spoil
; mollusc
; pollutant source
; pollution monitoring
; sediment pollution
; shelf sea
; shell
; waste disposal
; animal shell
; Article
; benthos
; bivalve
; California
; continental shelf
; dredging
; dumping
; nonhuman
; paleoecology
; sea level rise
; sediment
; species composition
; taphonomy
; waste disposal
; analysis
; anatomy and histology
; animal
; animal shell
; bay
; bivalve
; environmental monitoring
; procedures
; sediment
; California
; United States
; Bivalvia
; Mollusca
; Umbellularia californica
; Animal Shells
; Animals
; Bays
; Bivalvia
; California
; Environmental Monitoring
; Geologic Sediments
Scopus学科分类: Agricultural and Biological Sciences: Aquatic Science
; Earth and Planetary Sciences: Oceanography
; Environmental Science: Pollution
英文摘要: Molluscan shell debris is an under-exploited means of detecting, sourcing, and age-dating dredged sediments in open-shelf settings. Backscatter features on the Southern California shelf are suggestive of dredged sediment hauled from San Diego Bay but deposited significantly inshore of the EPA-designated ocean disposal site. We find that 36% of all identifiable bivalve shells > 2 mm (44% of shells > 4 mm) in sediment samples from this ‘short dump’ area are from species known to live exclusively in the Bay; such shells are absent at reference sites of comparable water depth, indicating that their presence in the short-dump area signals non-compliant disposal rather than natural offshore transport or sea level rise. These sediments lack the shells of species that invaded California bays in the 1970s, suggesting that disposal preceded federal regulations. This inexpensive, low-tech method, with its protocol for rejecting alternative hypotheses, will be easy to adapt in other settings. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/87957
Appears in Collections: 过去全球变化的重建 全球变化的国际研究计划
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作者单位: Department of the Geophysical Sciences, University of Chicago, 5734 S. Ellis Avenue, Chicago, IL, United States; Environmental Monitoring & Technical Services Division, Public Utilities Department, City of San Diego, 2392 Kincaid Avenue, San Diego, CA, United States; Geological Institute, Slovak Academy of Sciences, Dubravska cesta 9, Bratislava, Slovakia
Recommended Citation:
Bizjack M.T.,Kidwell S.M.,Velarde R.G.,et al. Detecting, sourcing, and age-dating dredged sediments on the open shelf, southern California, using dead mollusk shells[J]. Marine Pollution Bulletin,2017-01-01,114(1)