SBC LTER : Reef: Dissolved nitrogen fluxes from kelp forest sediment

Permeable marine sediments are biogeochemically active and may
contribute dissolved nutrients to support primary production in
coastal regions. This study examined the potential of permeable
marine sediments near giant kelp forests in the Santa Barbara
Channel, California to serve as a source of dissolved nutrients to
the overlying water column to support the observed growth of kelp
during summer months when nitrate availability is low. Over the
course of three summers (2017-2019) sediment cores were collected
at three nearshore kelp forest sites (ABUR, MICR, GOLB), and
flow-through bioreactor incubations were conducted to measure
nutrient fluxes. Data are contained in two tables: 1) changes in
nutrient concentrations measured over the course of both control
(seawater only) and experimental (seawater + sediment) incubations
(µM hr -1 ) and 2) net fluxes of
nutrients from sediments (µmol m -2 hr -1 ). This data package is to support manuscript “Lowman H., Hirsch M.,
Brezinkski M., and Melack J. Examining the Potential of Sandy
Marine Sediments Surrounding Giant Kelp Forests to Provide
Recycled Nutrients for Growth. Journal of Coastal Research.”

渗透性海洋沉积物具备活跃的生物地球化学活性，可释放溶解态营养盐，为沿海区域的初级生产提供支撑。
本研究针对美国加利福尼亚州圣巴巴拉海峡巨型海藻林周边的渗透性海洋沉积物开展调研，旨在明确其作为上覆水体溶解态营养盐来源的潜力，以支撑夏季硝酸盐可获得性偏低时段观测到的海藻生长。
研究于2017至2019年的三个夏季，在3个近岸海藻林采样点（ABUR、MICR、GOLB）采集沉积物岩心，并通过流通式生物反应器培养实验测定营养盐通量。
本数据集包含两张表格：1）对照组（仅含人工海水）与实验组（添加人工海水与沉积物）培养过程中测得的营养盐浓度变化（单位：µM·hr⁻¹）；2）沉积物营养盐净通量（单位：µmol·m⁻²·hr⁻¹）。
本数据包用于支撑以下学术论文：Lowman H.、Hirsch M.、Brezinkski M.及Melack J.发表于《Journal of Coastal Research》的《Examining the Potential of Sandy Marine Sediments Surrounding Giant Kelp Forests to Provide Recycled Nutrients for Growth》。