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Phytoplankton. Phytoplankton Taxonomy Diatoms Dinoflagellates Coccolithophores Cyanobacteria others…

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Presentation on theme: "Phytoplankton. Phytoplankton Taxonomy Diatoms Dinoflagellates Coccolithophores Cyanobacteria others…"— Presentation transcript:

1 Phytoplankton

2 Phytoplankton Taxonomy Diatoms Dinoflagellates Coccolithophores Cyanobacteria others…

3 Diatoms Frustule valves (Silica) Pennate and Radial species Autotrophic

4 Diatoms

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8 Diatom Asexual Reproduction

9 Dinoflagelates 2 Flagella (certain mobility) Theca plates (Cellulose) Autotrophic, heterotrophic & mixotrophic

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11 Dinoflagelates

12 Diatoms vs Dinoflagellates Medium Light Intensity Medium Nutrients Temperate regions High Light Intensity Very Low Nutrients Tropical regions, low productivity regions

13 Light Adaptation

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17 Alexandrium tamarense Paralytic Shellfish Poisoning (PSP)

18 Alexandrium spp. Blooms: - High temp. - Low salinity

19 Gambierdiscus toxicus Ciguatera Fish Poisoning (CFP)

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21 Pseudo-nitzschia spp. Amnesic Shellfish Poisoning (ASP)

22 Demoic Acid

23 Kogia breviceps

24 Chaetoceros spp.

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26 Coccolithofores Calcareous plates Small size – Nanoplankton (>20μm) Low productivity regions

27 Emiliania huxleyi www.earthguide.ucsd.edu

28 Florisphaera profunda www.earthguide.ucsd.edu

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30 Phytoplankton Distribution

31 Cyanobacteria & other Prokaryotic Autotrophs Very small size – Picoplankton (>2μm) Deepest waters Open Ocean, low productivity

32 Cyanobacteria

33 Flow Cytometry

34  Identifying leukemias and lymphomas of mature B and T cells  DNA ploidy analysis of solid cancerous tumors  DNA fragment size quantification  Ultrasensitive fluorescence detection

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36 Flow Cytometry

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38 Absorption Spectrum

39 Light Penetration

40 Light Adaptation High Light Adapted Low Light Adapted

41 Chlorophyll Concentration

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43 Figure 15.1d

44 Figure 15.1e


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