搜索结果: 1-11 共查到“海洋科学 Silica”相关记录11条 . 查询时间(0.122 秒)
Salt marsh tidal exchange increases residence time of silica in estuaries
Salt marsh tidal exchange increases residence time of silica in estuaries
2014/7/10
We present flux measurements of dissolved silicon (DSi), biogenic Si (BSi), and dissolved inorganic nitrogen (DIN) and phosphorus (DIP) on a temperate salt marsh in Narragansett Bay, Rhode Island, ove...
Nitrogen enrichment increases net silica accumulation in a temperate salt marsh
Nitrogen enrichment increases net silica accumulation a temperate salt marsh
2014/4/2
Two New England salt marshes exposed to different N availability were assessed seasonally for 1 yr, creating the first complete salt marsh Si budgets. Triplicate seasonal measurements were collected f...
Production, dissolution, accumulation, and potential export of biogenic silica in a Sargasso Sea mode-water eddy
Production dissolution accumulation
2014/4/16
Rates of biogenic silica (bSiO2) production, dissolution, accumulation, and potential bSiO2 export were
determined in a Sargasso Sea mode-water eddy (MWE) during two occupations in April 2007. Standi...
Dissolution of biogenic silica from land to ocean: Role of salinity and pH
Dissolution of biogenic silica land to ocean salinity pH
2014/4/18
The dissolution rates of diatom frustules, phytoliths, two diatomaceouslake sediments, a siliceous ooze from the Southern Ocean, a diatomite deposit, and a synthetic amorphous silica were measured in ...
Silica banding in the deep-sea lithistid sponge Corallistes undulatus: Investigating the potential influence of diet and environment on growth
deep-sea lithistid sponge Corallistes undulatus environment on growth
2014/4/22
We present detailed records of trace metals and carbon isotopes to understand siliceous spicule formation in
the deep-sea lithistid sponge Corallistes undulatus Le′vi and Le′vi, 1983 (Demospongiae: C...
Historic low-level phosphorus enrichment in the Great Lakes inferred from biogenic silica accumulation in sediments
Historic low-level phosphorus enrichment Great Lakes inferred
2014/4/30
Sedimentary biogenic silica (BSi) accumulation was used in conjunction with a hypothetical model of BSi
accumulation to show that BSi is a sensitive proxy for low-level phosphorus enrichment in the G...
Long-term changes in apparent uptake of silica in the San Francisco estuary
Long-term changes apparent uptake silica San Francisco estuary
2014/5/9
Silica distributions in estuaries can be used to infer uptake, particularly that due to production by diatoms. I used data from two long-term monitoring programs to infer long-term patterns of diatom ...
Control of silica production by iron and silicic acid during the Southern Ocean Iron Experiment (SOFeX)
silica production iron and silicic acid Southern Ocean Iron Experiment
2014/5/9
We examined the role of Si limitation in mediating the response of siliceous biomass and silica production to mesoscale Fe fertilization in the high-silicic acid high-nitrate waters of the Antarctic a...
The uptake of silica during the spring bloom in the Northeast Atlantic Ocean
silica spring bloom Northeast Atlantic Ocean
2014/5/21
A full understanding of the biogeochemical cycling of silica in the North Atlantic is hampered by a lack of estimates of silica uptake by phytoplankton. We applied the 32Si radiotracer incubation tech...
The balance between silica production and silica dissolution in the sea: Insights from Monterey Bay, California applied to the global data set
silica production silica dissolution in the sea Insights Monterey Bay, California applied global data set
2014/5/21
Silicon isotope tracers were used to examine the relative magnitude of silica dissolution and silica production in the Monterey Bay, California, upwelling system. A diatom bloom dominated by Skeletone...
Diminished efficiency in the oceanic silica pump caused by bacterially-mediated silica dissolution
Diminished efficiency oceanic silica pump bacterially-mediated silica dissolution
2014/5/21
Previous laboratory findings indicated that marine bacteria accelerate biogenic silica (bSiO2) dissolution rates in the sea by degrading the organic coating surrounding diatom frustules and exposing t...