distribution and abundance of algae
TRANSCRIPT
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Distribution, Abundance, and Recent trends of Algae in General
Prepared by:
NOE P. MENDEZCENTRAL MINDANAO UNIVERSITY (CMU)
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Key Points: Distribution
Abundance
Recent Trends
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distribution
Fairly well studied Floristic discontinuities caused by geographical features Algal Collection (US National Herbarium) – 320,500 specimens UK Biodiversity – 20,000 algal species
Hydroclathrus Sargassum Dictyota Spatoglossum
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5,000-5,500 species of red algae worldwide (Australian seas) 100 seaweed species (Western coastline of South Africa) 212 species (Kwazulu-South Africa)
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Distribution of Kappaphycus spp. in Hawaiian Island
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Distribution of algae in Massachusetts Bay
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Distribution of Cyanobacteria across the world (2012)
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Abundance
Algae are able to live in various conditions It’s abundance varies Known to require specific chemical & physical conditions (Prescott,
1968) Green algae is the most abundant Dominate primarily in production (photosynthetic)
Seabed Substrate Rocks
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Recent Trends
Agar – medium for growing bacteria
Alginate – for gelling agents in food, medical, & dressing
Energy source – produce fuel (produce more biomass)
Fertilizer – for aquaculture & soil conditioner
Food (nutrition) – source of food especially in Asia (A, B1, B2, B6, iodine, iron, etc.)
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Pigments – used as chemical dyes & coloring agents
Stabilizing substances – Carrageenan (red alga) used for stabilizer in milk products
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Agar
Alginate
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Medical purposes
Cosmetics
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Energy source
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Fertilizer
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Food
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Pigments
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Stabilizing substance
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THE END.. THANK YOU