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Light vs depth. Productivity vs depth. Productivity vs Light. PG – Gross Primary Productivity PN – Net Primary Productivity R - Respiration Pmax – maximal photosynthesis value Ic – compensation light intensity. Found near Upwelling Areas. Primary Productivity. SeaWifs Satellite. - PowerPoint PPT Presentation

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  • Light vs depth

  • Productivity vs depth

  • Productivity vs Light PG Gross Primary ProductivityPN Net Primary ProductivityR - RespirationPmax maximal photosynthesis valueIc compensation light intensity

  • Primary ProductivityFound near Upwelling AreasSeaWifs Satellite

  • Primary ProductivityFound near Upwelling AreasSeaWifs Satellite

  • Primary ProductivityNutrients Found near Upwelling Areas

  • Primary ProductivityCoastal Upwelling AreasSouth Africa: southwest coast

  • Primary ProductivityEquitorial Upwelling Areas

  • Primary Productivity

  • Protists - Zooplankton Foraminifera (Forams)

    Test (shell) made of calcium carbonate (CaCO3) or agglutinated sediment particlesFossil tests used to age geological depositsFeed by extending pseudopodia through pores in testPelagic forms (calcareous)Often have spinesTests may form foraminiferan oozes, esp. in shallow water beneath tropics (white cliffs of Dover England)Benthic forms (calcareous or agglutinated)Calcareous tests can be important sources of sand for beaches

  • Protists - Zooplankton Foraminifera (Forams)Southern England: White Cliffs of Dover

  • Protists - Zooplankton Foraminifera (Forams)

  • Protists - Zooplankton Foraminifera (Forams)http://earthguide.ucsd.edu/earthguide/imagelibrary/orbulinauniversa.htmlhttp://www.ucl.ac.uk/GeolSci/micropal/foram.html

  • Protists - Zooplankton Radiolarians

  • Protists - Zooplankton Ciliates (Ciliophores)

  • Seaweed & Kelp

  • Multicellular Algae - Seaweed Green Algae (Chlorophytes)EnteromorphaOften found in polluted areas; Used as bioassay toolUlva (Sea Lettuce)Found in areas with high nutrient levelsValonia (Bubble Algae)Tropical and subtropicalCaulerpaInvasive species (C. taxifolia)Codium (Dead Mans Fingers)MultinucleatedHalimedaCalcareous algaUlvaValoniaCaulerpa

  • Multicellular Algae - Seaweed Green Algae (Chlorophytes)EnteromorphaOften found in polluted areas; Used as bioassay toolUlva (Sea Lettuce)Found in areas with high nutrient levelsValonia (Bubble Algae)Tropical and subtropicalCaulerpaInvasive species (C. taxifolia)Codium (Dead Mans Fingers)MultinucleatedHalimedaCalcareous algaCodiumHalimeda

  • Multicellular Algae - Seaweed Brown Algae (Phaeophyta)PadinaSargassumFucus (Rockweeds)Intertidal and subtidal species; Ecologically importantLaminaria (Kelp)Some species consist of a single bladeCommonly used for foodPostelsia (Sea Palm)Usually on exposed rocky shorelines

    LaminariaLaminariaFucus

  • Multicellular Algae - Seaweed Brown Algae (Phaeophyta)

  • Multicellular Algae - Seaweed Brown Algae (Phaeophyta)Egregia (Feather Boa)Common on rocky Pacific coastPelagophycus (Elk Kelp)Large float

  • Multicellular Algae - Seaweed Brown Algae (Phaeophyta)Macrocystis (Giant Kelp)May reach 100 m and grow up to 50 cm day-1Most common in cold water

  • Multicellular Algae - Seaweed Brown Algae (Phaeophyta)Macrocystis (Giant Kelp)May reach 100 m and grow up to 50 cm day-1Most common in cold water

  • Multicellular Algae - Seaweed Brown Algae (Phaeophyta)Kelp Forests

  • Multicellular Algae - Seaweed Red Algae (Rhodophyta)Common in shallow waterContain accessory pigments called phycobilinsStructurally less complex than brown algaeMay be heterotrophic or parasiticSome incorporate calcium carbonate into tissues (Why?)Coralline red algaeMany are commercially important

    PorphyraSebdeniaHalimeda

  • Multicellular Algae - Seaweed Life History of Alga

  • Multicellular Algae - Seaweed Life History of Alga

  • Multicellular Algae - Seaweed Economic Uses of KelpFood SourceProductsPhycocolloidsAlgin (Extracted from kelp; harvested with boats)Carrageenan (Extracted from red algae)Emulsifier for dairy products, toothpaste, puddingsAgar (Extracted from red algae)Used to form jellies, thicken mixturesPreserves, pharmaceutical applicationsOtherFertilizers, additives in animal feeds

  • Flowering Plants (Angiosperms) Seagrasses (50 60 species)Not true grasses (related to lilies)Roots, stems and shoots grow from horizontal rhizomeFlowers typically small and inconspicuous (Why?)

  • Flowering Plants (Angiosperms) Seagrasses (50 60 species)Eelgrass (Zostera) Temperate Atl, Pac; Tropical Pac

    Eelgrass (Zostera marina)

  • Flowering Plants (Angiosperms) Seagrasses (50 60 species)Surf grass (Phyllospadix) Temperate Pac

    Surf Grass (Phyllospadix scouleri)

  • Flowering Plants (Angiosperms) Seagrasses (50 60 species)Turtle grass (Thalassia) Tropical

  • Flowering Plants (Angiosperms) Salt MarshesCord grass (Spartina)

    Pickleweed (Salicornia)

    SpartinaSalicornia

  • Flowering Plants (Angiosperms) Salt MarshesCord grass (Spartina)

    Pickleweed (Salicornia)

    SpartinaSalicornia

  • Flowering Plants (Angiosperms) Mangroves

  • Flowering Plants (Angiosperms) Mangroves vs Salt Marshes

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