预测有害藻类的开花:适用于挪威北部的Dinophysis acuminata
Edson Silva1, François Counillon1, Julien Brajard2
1Nansen Environmental and Remote Sensing Center, and Bjerknes Centre for Climate Research, Jahnebakken 3, Bergen, N-5007, Vestland, Norway.
Harmful algae
|June 8, 2023
概括
预测Dinophysis acuminata引起的有害藻类繁殖对于贝类的安全至关重要. 这项研究开发了一个预测模型,使用环境数据来预测鲜花的丰富性,有助于对公共卫生和水产养殖的早期警告.
科学领域:
- 海洋生态海洋生态学
- 有害的藻类开花 有害的藻类开花
- 环境监测 环境监测
背景情况:
- 化 (Dinophysis acuminata) 产生腹性贝类毒素 (DST),对公众健康和贝类产业构成风险.
- 了解和预测D. acuminata的开花对于有效的管理和缓解策略至关重要.
研究的目的:
- 评估影响D. acuminata在挪威北部Lyngen峡湾开花的环境条件.
- 开发D. acuminata细胞丰富度的亚季节性预测模型 (7-28天).
主要方法:
- 通过使用历史的现场细胞度数据 (2006-2019) 训练了一个支持向量机 (SVM) 模型.
- 环境预测因素包括通过卫星遥感获得的海面温度 (SST),光合成活性辐射 (PAR) 和风速.
- 模型性能使用确定系数进行评估.
主要成果:
- D. acuminata的开花在夏季发生在7.8-12.7°C之间的水域,其度高达3954细胞/升.
- 预测模型实现了从0.46到0.55的确定系数,相当准确地预测季节性开花的发展和幅度.
- 海洋表面温度 (SST) 证明是季节性开花发展的有用预测指标,而过去的细胞丰度则改进了时间和振幅预测.
结论:
- 开发的SVM模型为D. acuminata开花的次季节预测提供了有价值的工具.
- 建议对Lyngen峡湾的早期预警系统进行校准模型的运行测试.
- 建模方法可以适应其他地区,并进行本地数据重新校准.
相关概念视频
01:23Red Algae
65
Red algae, also known as rhodophytes, are primarily found in marine environments, though some species inhabit freshwater and terrestrial ecosystems. These organisms exist in both unicellular and multicellular forms, with some multicellular varieties reaching macroscopic sizes.As phototrophic organisms, red algae contain chlorophyll a; however, their chloroplasts lack chlorophyll b. Instead, they possess phycobiliproteins, which serve as major light-harvesting pigments, similar to those found in...
65
01:19Other Algae
49
The group Stramenopiles include some phototrophic microorganisms. Members of this group possess flagella covered in numerous short, hairlike extensions, a feature that inspired the group's name, derived from the Latin words for "straw" and "hair." Some of the main categories of Stramenopiles include diatoms, golden algae, and brown algae.Diatoms are unicellular, photosynthetic eukaryotes, with over 200 known genera. They play a key role in the planktonic communities of both marine and...
49
01:21Green Algae
62
Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
62