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综合研究1985-2015年美国Tampa Bay流域景观生态风险态势研判
景观格局 生态风险 空间分析 Tampa Bay流域
2016/12/22
探究坦帕湾流域景观生态风险的时空变化态势，为中国港湾流域开发利用与保护规划提供科学借鉴。［方法］ 以1985，1995，2005及2015年4个时期的TM/OLI遥感影像为主要数据源，结合土地利用数据，构建景观生态风险格局演变模型，对美国坦帕湾流域景观格局及生态风险的时空特征进行了分析。［结果］ （1） 研究期间，坦帕湾流域人工景观面积明显大于自然景观面积。（2） 1985年，坦帕湾流域景观低、较...
A Decade of Directly Measured Sediment N2 Fluxes:What Can Narragansett Bay Tell Us About the Global Ocean Nitrogen Budget?
Directly Measured Sediment N2 Fluxes Narragansett Bay Global Ocean Nitrogen Budget
2015/7/17
The tight coupling between nitrogen and carbon cycling has important implications for global climate. These two cycles are under growing anthropogenic pressures (e.g., warming temperatures, changes in...
Role of phytoplankton in mercury cycling in the San Francisco Bay estuary
Role of phytoplankton he San Francisco Bay estuary
2014/4/17
To study the role of phytoplankton in mercury cycling, we measured methylmercury (MeHg) and total
mercury (HgT) in surface waters during the spring 2003 phytoplankton bloom in San Francisco Bay. Cond...
Evaluating the biogeochemical cycle of selenium in San Francisco Bay through modeling
biogeochemical cycle selenium in San Francisco Bay
2014/5/5
A biogeochemical model was developed to simulate salinity, total suspended material, phytoplankton biomass, dissolved selenium concentrations (selenite, selenate, and organic selenide), and particulat...
A time series investigation of the oxygen isotopic composition of dissolved inorganic phosphate in Monterey Bay, California
oxygen isotopic composition dissolved inorganic phosphate Monterey Bay California
2014/5/5
We present a 2-yr time series of the oxygen isotopic composition of dissolved inorganic phosphate (δ18Op) in Monterey Bay, California. δ18Op can serve as a proxy for phosphate utilization because its ...
Nitrogen sources and cycling in the San Francisco Bay Estuary: A nitrate dual isotopic composition approach
Nitrogen sources cycling San Francisco Bay Estuary nitrate dual isotopic composition
2014/5/4
We used the dual isotopic composition of nitrate (δ15N and δ18O) within the estuarine system of San Francisco (SF) Bay, California, to explore the utility of this approach for tracing sources and cycl...
Relationship between net and gross primary production in the Sagami Bay, Japan
Relationship gross primary production
2014/5/13
Net and gross primary production (GPP), based on the incorporation of
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C-labeled inorganic carbon into particulate carbon and O2
production, were compared from September 2001 to July 2003 in Saga...
Seasonal variations in triple oxygen isotopes and gross oxygen production in the Sagami Bay, central Japan
Seasonal variations triple oxygen isotopes gross oxygen production Sagami Bay central Japan
2014/5/9
We studied daily, diurnal, and seasonal variations in triple oxygen isotopes in the Sagami Bay from May to October 2002. The variations in composition of triple oxygen isotopes are in association with...
Modeling the mass balance and fate of copper in San Diego Bay
mass balance fate copper San Diego Bay
2014/5/14
Because of its presence in antifouling coatings, stormwater, and industrial and municipal discharges, copper is a ubiquitous contaminant in estuarine and coastal environments. We integrated a system-w...
A comparison of the speciation and fate of mercury in two contaminated coastal marine ecosystems: The Venice Lagoon (Italy) and Lavaca Bay (Texas)
speciation and fate mercury in two contaminated coastal marine ecosystems Venice Lagoon (Italy) Lavaca Bay (Texas)
2014/5/14
We compared the speciation of Hg in two estuaries, Lavaca Bay (Texas) and the Venice Lagoon (Italy). Both are large, shallow embayments that are contaminated by direct discharges from mercury-cell chl...
Spatiotemporal patterns of carbon remineralization and bio-irrigation in sediments of Casco Bay Estuary, Gulf of Maine
Spatiotemporal patterns carbon mineralization bio-irrigation in sediments Casco Bay Estuary Gulf of Maine
2014/5/14
We measured the seasonal and spatial rates of organic matter decomposition and pore-water irrigation at four subtidal stations in Casco Bay estuary, Gulf of Maine. Organic carbon decomposition and ass...
Sediment geochemical records of eutrophication in the mesohaline Chesapeake Bay
Sediment geochemical records eutrophication mesohaline Chesapeake Bay
2014/5/27
An organic geochemical analysis of sediments in three cores from the mesohaline Chesapeake Bay was carried out to reconstruct the progression of eutrophication and anoxia/hypoxia over the past five ce...
This note presents a method of distinguishing the source of freshwater that causes reductions in salinity in the coastal environment of South Florida. This technique, which uses the δ18O and δD of the...
Iron-sulfur-phosphorus cycling in the sediments of a shallow coastal bay: Implications for sediment nutrient release and benthic macroalgal blooms
Iron-sulfur-phosphorus cycling in the sediments shallow coastal bay:sediment nutrient release benthic macroalgal blooms
2014/5/26
We conducted a study to determine the seasonal relationship between iron, sulfur, and phosphorus in the upper sediments and pore waters of a shallow intercoastal bay. From April 1999 to September 2000...
Modeling detailed sedimentary 210Pb and fallout 239,240Pu profiles to allow episodic events: An application in Chesapeake Bay
sedimentary 210Pb fallout 239,240Pu profiles Chesapeake Bay
2014/6/9
Dependable sediment chronologies are essential to the interpretation of the sedimentary record of past environmental change. In the present article, we use high-resolution chemical and radiochemical d...