Marine_April 27

Marine_April 27 - Aquatic biomes Lakes and Ponds Streams...

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1 Aquatic biomes Lakes and Ponds Streams and Rivers Wetlands Estuaries Marine Biomes Coral Reefs > 70% of Earth’s surface is water 97% of surface water is marine Estuaries Estuaries occur where rivers meet the ocean Estuaries Estuaries have high productivity that supports many fish and birds Nursery grounds:herring, sardines, seabass, sole Mangrove forests are common in tropical estuaries Danielsen et al 2005 2005 tsunami damage, India Mangroves form a barrier to shoreline erosion and tsunamis Models show that 30 trees per 100 m 2 in a 100-m wide belt may reduce the maximum tsunami flow pressure by more than 90% Severe damage Dense mangrove Village
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2 Mangroves have been introduced to Hawaii Rhizophora mangle Time Population size or density Exponential growth has no limit while logistic growth assumes a carrying capacity carrying capacity Carrying capacity is probably determined by: A. Intra-specific competition B. Inter-specific competition C.Herbivory D.Predators N t = N 0 e rt r = intrinsic rate of increase t = time Population growth is an exponential process time 1 2 3 4 Which process is analogous to population growth?
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Marine_April 27 - Aquatic biomes Lakes and Ponds Streams...

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