Dissolved Organic Phosphorus Cycling in the Coastal Ocean
沿海海洋中溶解有机磷的循环
基本信息
- 批准号:0638616
- 负责人:
- 金额:$ 1.3万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2006
- 资助国家:美国
- 起止时间:2006-06-01 至 2006-09-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
ABSTRACTOCE-0119134A researcher from Woods Hole Oceanographic Institution will participate in the cruises and field experiments of the Coastal Ocean Advances in Shelf Transport (COAST) project funded by the Coastal Oceans Processes (CoOP) program. The participation of this PI in the study will add a phosphorus component to the project thereby allowing the coupled dynamics of carbon, nitrogen and phosphorus cycling in the coastal system off Oregon to be resolved. Taking advantage of the high temporal and spatial resolution provided by the COAST sampling plan, the PI plans to carry out the following research: (1) determine the 3-dimensional distributions of dissolved organic phosphorus (DOP) and particulate organic phosphorus (POP), and how they relate to distributions of dissolved organic carbon (DOC), particulate organic carbon, dissolved organic nitrogen (DON), particulate organic nitrogen and other biological parameters; (2) ascertain the dynamic variability of the C:N:P ratios of the dissolved and particulate organic pools; (3) assess the short term (during transect re-sampling on each 21-day cruise) versus seasonal variations in coupled DOC, DON, DOP; and (4) evaluate the effects that topography has on DOP and POP cycling and cross-shelf transport. In addition, DOP bioavailability will be evaluated by monitoring the extent of enzymatic DOP hydrolysis in field samples. The nutritional status of in-situ phytoplankton with regard to phosphate stress will be determined by bulk and cell-specific Enzyme Labeled Fluorescence (ELF) Alkaline phosphatase (APase) and the species-specific response of phytoplankton to induced or alleviated P-limitation will be assessed using ELF-APase in shipboard nutrient amendment incubations.
ABSTRACTOCE-0119134伍兹霍尔海洋研究所的一名研究人员将参加由沿海海洋进程 (CoOP) 计划资助的沿海海洋陆架运输进展 (COAST) 项目的巡航和现场实验。 该 PI 参与该研究将为该项目添加磷成分,从而解决俄勒冈州沿海系统中碳、氮和磷循环的耦合动力学问题。 利用COAST采样计划提供的高时空分辨率,PI计划开展以下研究:(1)确定溶解有机磷(DOP)和颗粒有机磷(POP)的三维分布,以及它们与溶解有机碳(DOC)、颗粒有机碳、溶解有机氮(DON)、颗粒有机磷(POP)分布的关系。 氮和其他生物参数; (2) 确定溶解和颗粒有机池的 C:N:P 比率的动态变化; (3) 评估耦合 DOC、DON、DOP 的短期变化(在每次 21 天航行的样线重新采样期间)与季节性变化; (4) 评估地形对 DOP 和 POP 循环以及跨陆架运输的影响。 此外,DOP 的生物利用度将通过监测现场样品中酶促 DOP 水解的程度来评估。 就磷酸盐胁迫而言,原位浮游植物的营养状况将由大量和细胞特异性酶标记荧光 (ELF) 碱性磷酸酶 (APase) 确定,浮游植物对诱导或减轻磷限制的物种特异性反应将在船上营养改良孵化中使用 ELF-APase 进行评估。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Kathleen Ruttenberg其他文献
Kathleen Ruttenberg的其他文献
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{{ truncateString('Kathleen Ruttenberg', 18)}}的其他基金
Collaborative Research: Dynamics of dissolved organic phosphorus production, composition and bioavailability along a natural marine phosphate gradient
合作研究:沿天然海洋磷酸盐梯度溶解有机磷产生、组成和生物利用度的动态
- 批准号:
1756964 - 财政年份:2018
- 资助金额:
$ 1.3万 - 项目类别:
Continuing Grant
Chemical Oceanography: Processes at Interfaces: Bridging Spatial, Temporal and Disciplinary Divides from Micro- to Global Scales
化学海洋学:界面过程:弥合从微观到全球尺度的空间、时间和学科鸿沟
- 批准号:
1540233 - 财政年份:2015
- 资助金额:
$ 1.3万 - 项目类别:
Standard Grant
Fate of Phosphorus during Photochemical Cycling of Iron Oxyhydr(oxides) in the Upper Ocean
上层海洋羟基氧化铁光化学循环过程中磷的归宿
- 批准号:
1416894 - 财政年份:2014
- 资助金额:
$ 1.3万 - 项目类别:
Standard Grant
Collaborative Research: Biogeochemical Dynamics of Phosphorus in the Coastal Ocean: A Combined Observational, Experimental, and Ecosystem Modeling Study
合作研究:沿海海洋中磷的生物地球化学动力学:观测、实验和生态系统模拟相结合的研究
- 批准号:
0550851 - 财政年份:2006
- 资助金额:
$ 1.3万 - 项目类别:
Standard Grant
Dissolved Organic Phosphorus Cycling in the Coastal Ocean
沿海海洋中溶解有机磷的循环
- 批准号:
0119134 - 财政年份:2001
- 资助金额:
$ 1.3万 - 项目类别:
Standard Grant
Chemical Controls on Bioavailability of Riverine Particulate Phosphorus and Changes in Riverine Particulate Phosphorus Chemistry Across the Continent-Ocean Interface
对河流颗粒磷生物利用度的化学控制以及跨大陆-海洋界面河流颗粒磷化学的变化
- 批准号:
9406585 - 财政年份:1994
- 资助金额:
$ 1.3万 - 项目类别:
Continuing Grant
The Role of Organic Phosphorus in Nutrient Cycling, Early Diagenesis and Burial of Refractory Organic Matter
有机磷在养分循环、早期成岩作用和难熔有机物埋藏中的作用
- 批准号:
9216553 - 财政年份:1993
- 资助金额:
$ 1.3万 - 项目类别:
Continuing Grant
Phosphorous Diagenesis and Burial in Marine Sediments
海洋沉积物中磷的成岩作用和埋藏
- 批准号:
9101495 - 财政年份:1991
- 资助金额:
$ 1.3万 - 项目类别:
Continuing Grant
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