قارن الطرق

	تصنيف أحجام العوالق النباتية	تنميط CTD
المجال	علم المحيطات	علم المحيطات
العائلة	Process / pipeline	Process / pipeline
سنة النشأة	1978	1977
صاحب الطريقة	John McN. Sieburth	Neil Brown
النوع	taxonomic	instrumental
المصدر التأسيسي	Sieburth, J. M., Smetacek, V., & Lenz, J. (1978). Pelagic ecosystem structure: heterotrophic compartments of the plankton and their relationship to plankton size fractions. Limnology and Oceanography, 23(6), 1256-1263.	UNESCO/IOC. (1991). Processing of oceanographic station data. UNESCO Technical Papers in Marine Science, 60.
الأسماء البديلة	Size-fractionated Chlorophyll, Phytoplankton Taxonomy	CTD, Rosette Sampling
ذات صلة	3	3
الملخص	Phytoplankton size classification is a fundamental framework for organizing plankton communities and understanding their ecological roles and biogeochemical impacts. Developed by Sieburth, Smetacek, and Lenz in 1978, size classes (pico-, nano-, micro-, macro-phytoplankton) define distinct functional groups with different nutritional requirements, growth rates, grazing vulnerabilities, and sinking rates. Size-based classification enables rapid assessment of plankton community structure and prediction of ecosystem responses to environmental change.	Conductivity-Temperature-Depth (CTD) profiling is the primary method for measuring vertical profiles of seawater properties in oceanography. Developed by Neil Brown in 1977, CTD instruments are equipped with sensors for conductivity, temperature, and pressure (depth), and are typically mounted on water-sampling rosettes. CTD profiling provides essential hydrographic data that characterizes water mass structure, stratification, and circulation patterns.