Arctic PRoductivity in the seasonal Ice ZonE (Arctic PrIZE)

北极季节性冰区生产力（北极奖）

基本信息

批准号：
NE/P006507/1
负责人：
Heather Bouman
金额：
$ 19.33万
依托单位：
University of Oxford
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2017
资助国家：
英国
起止时间：
2017 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=NE%2FP006507%2F1
关键词：
Arctic PRoductivity seasonal Ice ZonE

项目摘要

Arctic PRIZE will address the core objective of the Changing Arctic Ocean Program by seeking to understand and predict how change in sea ice and ocean properties will affect the large-scale ecosystem structure of the Arctic Ocean. We will investigate the seasonally and spatially varying relationship between sea ice, water column structure, light, nutrients and productivity and the roles they play in structuring energy transfer to pelagic zooplankton and benthic megafauna.We focus on the seasonal ice zone (SIZ) of the Barents Sea - a highly productive region that is undergoing considerable change in its sea ice distribution - and target the critically important but under-sampled seasonal transition from winter into the post-bloom summer period. Of critical importance is the need to develop the predictive tools necessary to assess how the Arctic ecosystems will respond to a reducing sea ice cover. This will be achieved through a combined experimental/modelling programme. The project is embedded within international Arctic networks based in Norway and Canada and coordinated with ongoing US projects in the Pacific Arctic. Through these international research networks our proposal will have a legacy of cooperation far beyond the lifetime of the funding. The project comprises five integrated work packages.WP1 Physical Parameters: We will measure properties of the water column (temperature, salinity, turbulent fluxes, light, fluorometry) in both open water and under sea ice by deploying animal-borne tags on seals which preferentially inhabit the marginal ice zone (MIZ). We will use ocean gliders to patrol the water around the MIZ and track it as the ice retreats northwards in summer. Measurements of underwater light fields will support development of improved regional remote sensing algorithms to extend the spatial and temporal context of the proposal beyond the immediate deployment period.WP2 Nutrient Dynamics: We will undertake an extensive program of measuring inorganic and organic nutrients, their concentrations, isotopic signatures and vertical fluxes to understand the role of vertical mixing and advection (WP1) in regulating nutrient supply to PP in the surface ocean.WP3 Phytoplankton Production: We will investigate nutrient supply (WP2) and light availability (WP1) linked to sea ice affect the magnitude, timing, and composition of phytoplankton production, and the role of seasonal physiological plasticity. Through new numerical parameterisations - cross-tuned and validated using a rich array of observations - we will develop predictive skill related to biological production and its fate; resolve longstanding questions about the competing effects of increased light and wind mixing associated with sea ice loss; and therefore contribute to the international effort to project the functioning of Pan-Arctic ecosystems.WP4 Zooplankton Behaviour: Zooplankton undergo vertical migrations to graze on PP at the surface. We will use acoustic instruments on moorings and AUVs, with nets and video profiles to measure the composition and behaviours of pelagic organisms in relation in light and mixing (WP1) and phytoplankton production (WP3) over the seasonal cycle of sea ice cover. The behaviours identified will be used to improve models that capture the life-history and behavioural traits of Arctic zooplankton. These models can then be used to investigate how feeding strategies of key Arctic zooplankton species may be modified during an era of reducing sea ice cover.WP5 Benthic Community: We will use an AUV equipped with camera system to acquire imagery of the large seabed-dwelling organisms to investigate how changes in sea ice duration (WP1), timing of PP (WP3) and bentho-pelagic coupling (WP4) can modify the spatial variation in benthic community composition. We will also conduct time series-studies in an Arctic fjord using a photolander system to record the seasonally varying community response to pulses of organic matter.

北极奖将通过寻求了解和预测海冰和海洋物业的变化将如何影响北极海洋的大规模生态系统结构，以解决不断变化的北极海洋计划的核心目标。 We will investigate the seasonally and spatially varying relationship between sea ice, water column structure, light, nutrients and productivity and the roles they play in structuring energy transfer to pelagic zooplankton and benthic megafauna.We focus on the seasonal ice zone (SIZ) of the Barents Sea - a highly productive region that is undergoing considerable change in its sea ice distribution - and target the critically important but under-sampled seasonal transition from winter into冬季后的夏季。至关重要的是，需要开发必要的预测工具来评估北极生态系统将如何应对减少的海冰覆盖。这将通过合并的实验/建模程序来实现。该项目嵌入了挪威和加拿大的国际北极网络中，并与太平洋北极地区正在进行的美国项目进行了协调。通过这些国际研究网络，我们的建议将拥有合作的遗产，这远远超出了资金的一生。该项目包括五个集成的工作包。WP1物理参数：我们将通过在开放水和海冰下的水柱（温度，盐度，湍流，湍流，光，光，荧光测定法）的特性，通过在密封件上部署动物 - 型号的印章，优先居住在边际冰区（MIZ）。我们将使用海洋滑翔机在Miz周围巡逻水，并在夏季向北撤退时跟踪它。 Measurements of underwater light fields will support development of improved regional remote sensing algorithms to extend the spatial and temporal context of the proposal beyond the immediate deployment period.WP2 Nutrient Dynamics: We will undertake an extensive program of measuring inorganic and organic nutrients, their concentrations, isotopic signatures and vertical fluxes to understand the role of vertical mixing and advection (WP1) in regulating向地表海洋中PP的营养供应。WP3浮游植物生产：我们将研究与海冰相关的营养供应（WP2）和光的可用性（WP1）（WP1）会影响浮游植物生产的大小，时机和组成，以及季节性生理可塑性的作用。通过新的数值参数化 - 使用丰富的观察结果进行了交叉调整和验证 - 我们将发展与生物生产及其命运有关的预测技能；解决有关与海冰损失相关的光和风混合的竞争影响的长期问题；因此，有助于投射泛极生态系统功能的国际努力。WP4浮游动物行为：浮游动物进行垂直迁移以在表面上放牧PP。我们将在系泊和AUV上使用声学仪器，并带有网和视频概况，以在光和混合（WP1）（WP1）和浮游植物生产（WP3）中的季节性周期中的相关性中浮游生物的组成和行为。确定的行为将用于改善捕获北极浮游生物的生活历史和行为特征的模型。 These models can then be used to investigate how feeding strategies of key Arctic zooplankton species may be modified during an era of reducing sea ice cover.WP5 Benthic Community: We will use an AUV equipped with camera system to acquire imagery of the large seabed-dwelling organisms to investigate how changes in sea ice duration (WP1), timing of PP (WP3) and bentho-pelagic coupling (WP4) can modify底栖界组成的空间变化。我们还将使用Photolander系统在北极峡湾进行时间序列研究，以记录季节性变化的社区对有机物脉冲的反应。