Citation:

PANGAEA.965511

Name: Nutrients, biological silica concentrations and stable silicon isotope compositions with the hydrographic parameters all year round in the Yellow River estuary and Bohai Sea
Published: 2024-03-14
License: https://creativecommons.org/licenses/by/4.0/
Keywords: biogenic silica; Diatoms; nutrient concentrations; Silicon isotopes; Yellow River estuary and Bohai Sea

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Published: 2024-03-14 • DOI registered: 2024-03-14

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Abstract:

To study how the biogeochemical Si cycle in large river estuary and coastal areas has responded to one of the largest river regulation projects in the world, we conducted four cruises covering 33 stations across the Yellow River estuary and Bohai Sea via the RV CHUANGXINYI over four seasons, from October 2021 to August 2022. Temperature and salinity were monitored by a SeaBird-911 Conductivity-Temperature-Depth (CTD) recorder. Nutrients of phosphate, dissolved inorganic nitrogen and dissolved silica were measured by SEAL QuAAtro 39-SFA analyzer, biogenic silica was measured by alkaline digestion method, and Si isotope values of dissolved silica isotopes were measured by MC-ICP-MS. Our data reveal that the Si cycle in the Yellow River estuary and Bohai Sea is subject to high pressure of human activities and large natural variability.

Keyword(s):

biogenic silica; Diatoms; nutrient concentrations; Silicon isotopes; Yellow River estuary and Bohai Sea

Supplement to:

Cui, Quanchao; Liu, Xiaowen; Wang, Zhenyan; Sun, Weidong; Xiao, Yuanyuan; Sun, Xiaole (2024): Atypical Seasonality of the Silicon Cycle in the Yellow River Estuary and Bohai Sea Revealed by Stable Silicon Isotopes. Global Biogeochemical Cycles, 38(3), e2023GB007894, https://doi.org/10.1029/2023GB007894

Coverage:

Median Latitude: 38.450864 * Median Longitude: 119.854964 * South-bound Latitude: 37.747633 * West-bound Longitude: 118.067467 * North-bound Latitude: 40.187567 * East-bound Longitude: 121.265850

Date/Time Start: 2021-10-27T00:00:00 * Date/Time End: 2022-08-21T00:00:00

Minimum DEPTH, water: 2.00 m * Maximum DEPTH, water: 70.00 m

Event(s):

BB1_Autumn * Latitude: 38.533833 * Longitude: 118.694617 * Date/Time: 2021-10-29T00:00:00 * Location: China * Method/Device: Water sample (WS)

BB1_Spring * Latitude: 38.532033 * Longitude: 118.691750 * Date/Time: 2022-04-15T00:00:00 * Location: China * Method/Device: Water sample (WS)

BB1_Summer * Latitude: 38.532167 * Longitude: 118.694900 * Date/Time: 2022-08-18T00:00:00 * Location: China * Method/Device: Water sample (WS)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Cui, Quanchao
2	Latitude of event	Latitude		Cui, Quanchao
3	Longitude of event	Longitude		Cui, Quanchao
4	Date/Time of event	Date/Time		Cui, Quanchao
5	Season	Season		Cui, Quanchao
6	Station label	Station		Cui, Quanchao
7	DEPTH, water	Depth water	m	Cui, Quanchao		Geocode
8	Temperature, water	Temp	°C	Cui, Quanchao	CTD, Sea-Bird, SBE 911
9	Salinity	Sal		Cui, Quanchao	CTD, Sea-Bird, SBE 911
10	Nitrogen, inorganic, dissolved	DIN	µmol/l	Cui, Quanchao	Segmented Flow Analysis (SFA), SEAL Analytical, QuAAtro39
11	Phosphorus, inorganic, dissolved	DIP	µmol/l	Cui, Quanchao	Segmented Flow Analysis (SFA), SEAL Analytical, QuAAtro39
12	Silica, dissolved	DSi	µmol/l	Cui, Quanchao	Segmented Flow Analysis (SFA), SEAL Analytical, QuAAtro39
13	Chlorophyll a	Chl a	µg/l	Cui, Quanchao
14	Biogenic silica	bSiO2	µmol/l	Cui, Quanchao	Alkaline extraction
15	δ30Si	δ30Si	‰ NBS	Cui, Quanchao	Multi-Collector ICP-MS (MC-ICP-MS)
16	δ30Si, standard deviation	δ30Si std dev	±	Cui, Quanchao	Multi-Collector ICP-MS (MC-ICP-MS)	2sd
17	δ29Si	δ29Si	‰ NBS	Cui, Quanchao	Multi-Collector ICP-MS (MC-ICP-MS)
18	δ29Si, standard deviation	δ29Si std dev	±	Cui, Quanchao	Multi-Collector ICP-MS (MC-ICP-MS)
19	δ30Si	δ30Si	‰ NBS	Cui, Quanchao	Multi-Collector ICP-MS (MC-ICP-MS)	Duplicate sample
20	δ30Si, standard deviation	δ30Si std dev	±	Cui, Quanchao	Multi-Collector ICP-MS (MC-ICP-MS)	Duplicate sample 2sd
21	δ29Si	δ29Si	‰ NBS	Cui, Quanchao	Multi-Collector ICP-MS (MC-ICP-MS)	Duplicate sample
22	δ29Si, standard deviation	δ29Si std dev	±	Cui, Quanchao	Multi-Collector ICP-MS (MC-ICP-MS)	Duplicate sample 2sd

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

4516 data points

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