Collaborative Research: HOT Program: Core Pigment Measurements

合作研究：HOT 项目：核心颜料测量

• 批准号: 9315311
• 负责人: Robert Bidigare
• 金额: $ 17.53万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-08-15 至 1999-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9315311&HistoricalAwards=false
• 关键词: Collaborative; Research; HOT; Program; Core

9315311 Bidigare This project provides core measurments of algal pigments (chlorophylls, carotenoids, phycoerythrin and phaeopigments) for the Hawaii Ocean Time-series (HOT) Program. Analytical methods employ QA/QC procedures to insure highly accurate and precise, as well as "comparable" data. Pigment data are being used to document depth-dependent, seasonal and interannual variations in phytoplankton biomass (chlorophyll a) an composition (accessory pigments) at Station ALOHA. Accessory pigments provide class- specific differentiation, allowing the recognition of bomass contributions by cyanobacteria (phycoerythrin); prochlorophytes (divinyl chlorophyll a); prasinophytes (prasinoxanthin); chlorophytes (lutein); prymnesiophytes (19'- hexanoyloxyfucoxanthin); chrysophytes (19'- butanoyloxyfucoxanthin); cryptohytes (alloxanthin); dinoflagellates (peridinin); and diatoms (fucoxanthin). Relative biomass contributions (i.e., as a percentage of total chlorophyll a biomass) by these algal groups are estimated from HPLC-determined pigment concentrations and accessory pigment-to-chlorophyll ratios (cf. Hooks et al., 1988; Letelier et al., in revision).

小行星9315311 该项目为夏威夷海洋时间序列（HOT）计划提供藻类色素（叶绿素、类胡萝卜素、藻红蛋白和褐色素）的核心测量。分析方法采用QA/QC程序，以确保高度准确和精确，以及“可比”的数据。 色素数据正用于记录ALOHA站浮游植物生物量（叶绿素a）和成分（辅助色素）随深度的季节性和年际变化。辅助色素提供类别特异性区分，允许识别蓝藻（藻红蛋白）、前绿藻（二乙烯基叶绿素a）、绿球藻（绿球藻黄质）、绿藻（叶黄素）、紫球藻（19 ′-己酰氧基岩藻黄质）、金藻（19 ′-丁酰氧基岩藻黄质）、隐藻（四黄质）、甲藻（多甲藻素）和硅藻（岩藻黄质）对藻团的贡献.相对生物量贡献（即，作为总叶绿素a生物量的百分比）由这些藻类组从HPLC测定的色素浓度和辅助色素与叶绿素的比率估计（参见图10）。Hooks等人，1988; Letelier等人，修订中）。