Fish stock assessment
Catch, effort and survey data are fitted in population models to estimate biomass and fishing mortality against reference points, with data-limited methods where records are short.
GCRI · Biodiversity Nexus
Ocean science provides the physics, chemistry and biology behind marine biodiversity risk: heat, acidity and oxygen in the water, the currents that connect habitats, and the stock assessments that tell fisheries managers how much can be taken. It links offshore change to coastal habitats and livelihoods.
Ocean science studies the physics, chemistry, biology and geology of the oceans and coasts. It informs 海平面上升, 风暴潮, marine heatwaves, acidification and fisheries change, all of which affect coastal populations and trade. In biodiversity and nature, climate and hazards and oceans and coasts, ocean projections guide coastal defence, port planning and fisheries management. They link marine hazards to food security, shipping routes and coastal economies. The canonical description is on STEM Commons.
Catch, effort and survey data are fitted in population models to estimate biomass and fishing mortality against reference points, with data-limited methods where records are short.
Satellite sea surface temperature is compared with the local climatology to compute accumulated heat stress, which is related to observed bleaching and mortality.
Ocean circulation models release virtual larvae to estimate which reefs and nurseries supply others, informing the design of protected area networks.
Marine heat, sea temperature and chlorophyll over the Amazon Basin, from NASA GIBS. Each layer carries its own date.
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NASA GIBS / EOSDIS · ASTER GDEM (METI, NASA) · Blue Marble (NASA) · © OpenStreetMap贡献者 (ODbL) · Natural Earth
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Ocean state, framed on the Amazon Basin.NASA 发布的卫星和模型产品,各带自己的日期。它们是指标,而非对任何地点的评估。
图层与日期
Datasets and records used by ocean and coastal science on this platform, with the role each plays and the label its values carry. Sources are listed in 来源登记册.
| 数据 | 角色 | 标签 |
|---|---|---|
| OBIS marine occurrence records | Species distribution | 观测 |
| Copernicus Marine and NOAA Coral Reef Watch | Temperature, heat stress and biogeochemistry | 观测 |
| Fisheries catch and survey data | Stock assessment inputs | 已发布统计 |
| Argo floats and moorings | Subsurface temperature and oxygen | 观测 |
| Ocean circulation model output | Connectivity and projections | 模型生成 |
Assembled from the Nexus Standards area profile 生物多样性与自然风险标准: the hazards it names, the 系统 and sectors that carry the loss, the controls that dampen it and the data that observe it. Choose the components, pick an initiating hazard and step through the cascade. The Map view places the run on an example geography with open data. Every coupling weight is a stated assumption you can change. A teaching model, not a forecast, an assessment or a certification. To model a place of your own choosing, open the full System Builder.
灾害
系统与耦合
控制措施
NS-0 章程与原则NS-1 维持社会运转的 UNI 与制品目录(语法 v0.2:领域、部门、区域和环境分段)NS-3 风险记录 UNI(语法、旧编码对照、分配机构)NS-3b 数据集与产品元数据规范(STAC、DCAT、PROV-O)NS-5 图表、地图和可视化标准(配合 UI/UX 套件)NS-9 情境 UNI(部署、实例、计划实例)NS-11 验证与监测(证据、证明、零信任符合性观测)NRS-N5 生物多样性与自然风险及韧性NRS-H65 危害类别:超越行星边界(NHS-1 planet.boundary)NRS-H27 危害族:生物多样性与物种压力(NHS-1 eco.species)NRS-H26 危害类别:土地与湿地退化(NHS-1 eco.land)NRS-H28 危害类别:气候状态转变(NHS-1 eco.climate-state)NRS-H64 危害类别:生态系统状态突变(NHS-1 eco.regime-shift)观测
示例地理范围
Models are checked against tide gauge records, altimetry and in situ profiles. Hindcasts of past storms and heatwaves test predictive skill.
| 核查 | 如何开展 |
|---|---|
| Retrospective analysis | Stock assessments are rerun with recent years removed to test for systematic revision |
| Satellite against in-situ | Remotely sensed temperature and ocean colour are compared with mooring and ship data |
| Bleaching hindcast | Heat stress metrics are tested against surveyed past bleaching events |
Coastal processes at fine scale and ice sheet contributions to sea level remain uncertain. Observations of the deep ocean and polar seas are sparse.
The sectors ocean science for marine biodiversity touches and how strongly they depend on each other: what a study has to observe and model together.
签名
生物多样性及其合作伙伴
生物多样性为粮食提供授粉和土壤(0.6),为水提供流域调节(0.5),为健康带来人畜共患病溢出和药物(0.4)。
W · E · I · F · H · B
模型、其假设、数据和不确定性,以科学家或工程师会核查的形式呈现。结构遵循已发表的方法。所取数值仅为示意,不是研究发现。
How a satellite or sensor record becomes evidence on ocean science for marine biodiversity, and where each step adds uncertainty.
海洋与海岸 stewards ocean and coastal science for the Consortium and reviews how it is applied across platforms.
Process explorer · Process
9 steps·3 stages·1 gate
流程
The WMO flood forecasting manual and Early Warnings for All describe the chain from forecast to action, across EW4All’s four pillars.
Neutral outline of a published external standard or method, from its issuing body. Not a record of operation. Nexus does not perform, certify or approve any step shown. A gate or decision belongs to the party the source names.
报告 is the Consortium’s quarterly publication. What you know about this subject can become evidence, a case or a correction in the next edition, credited to you and published under CC BY 4.0 where it is your own work.
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