Aquatic Ecosystems Chapter 15.4 -15.5.

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Presentation transcript:

Aquatic Ecosystems Chapter 15.4 -15.5

Lesson Essential Question: What factors affect the distribution of life in an aquatic ecosystem?

KNOW: phytoplankton zooplankton salinity estuary

Main Ideas: The ocean can be divided into zones. 15.4 Marine Ecosystems Main Ideas: The ocean can be divided into zones. Coastal waters contain unique habitats.

The ocean can be divided into zones. Ocean zones can be determined by their distance from shoreline and water depths. intertidal zone neritic zone bathyal zone abyssal zone

Zones Cont.…. intertidal zone—between low and high tide neritic zone—from intertidal zone to continental shelf bathyal zone—neritic zone to base of continental shelf abyssal zone –lies below 2000 m intertidal zone neritic zone bathyal zone abyssal zone

Zones Cont.…. Photic = Light Photic zones – Zones where sunlight penetrates the water, Where aquatic producers live Aphotic zones – No light penetrates these zones because it is too deep, no producers

Quick Video https://www.youtube.com/watch?v=Lt7b8_kBjYM

Zones Cont.…. The neritic zone harbors more biomass than any other zone. Plankton make up most of the biomass. zooplankton phytoplankton

Zooplankton zoo = animal or living being Zooplankton = animal plankton

Phytoplankton phyto = plant Phytoplankton = photosynthetic plankton Example: blue-green algae critical to life on this planet carry out most of the photosynthesis provides most of the oxygen ~70% of the air you breath base of oceanic food web

Plankton Video http://marinebio.org/oceans/zooplankton/

15.5 Estuaries and Freshwater Ecosystems Estuary – Where rivers flow into the ocean a partially enclosed body of water. mixture of fresh water with salt water Chesapeake Bay / Louisiana bayous

Estuaries highly productive ecosystems. provide a protected refuge for many species. birds migration spawning grounds primarily threatened by land development. p472 https://www.youtube.com/watch?v=h01JBiZt6rg&ebc=ANyPxKqQrBc7PEOtXzuBa7LcvPAtqUrPAOVq3V30ukKPk3qXBOpw2FSENS0KDupuIqUaiRP4BrCrCirfQsnQkSr-UeO0oiPEjA&nohtml5=False

salinity – amount of salt in the water temperature – decreases as you go deeper into the ocean Saltwater – Ocean biome Freshwater – Lakes, Ponds, Rivers, Streams

Freshwater Biomes have photic, aphotic, and benthic zones; greater seasonal & temp changes than marine biomes, organisms must adapt. Three main types: Moving water Standing water Wetland

River, river systems, body of water Freshwater Biomes Watershed River, river systems, body of water estuary ocean