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Aquatic Biomes

Aquatic Biomes. Freshwater-lakes and ponds. Littoral zone- shore line. Nutrient rich and diverse. Benthic zone- little sunlight. Animals live off of decaying matter that falls to the bottom. Freshwater-lakes and ponds.

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Aquatic Biomes

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  1. Aquatic Biomes

  2. Freshwater-lakes and ponds • Littoral zone- shore line. Nutrient rich and diverse. • Benthic zone- little sunlight. Animals live off of decaying matter that falls to the bottom.

  3. Freshwater-lakes and ponds • Oligotrophic – Nutrient poor/oxygen rich. Often sources that feed it are glaciers, mountainous regions. • Eutrophic- Nutrient rich/oxygen poor. Fed by steams with lots of dissolved minerals but the decaying organic matter increases oxygen demand.

  4. Freshwater- lakes and ponds • Often, newly formed lakes start as oligotrophic and become eutrophic. • Eutrophication can be accelerated by pollution that cause algal blooms. (fertilizer runoff, sewage)

  5. Rivers • Rivers at there starting pts. are usually high in oxygen and cold. • Plants and animals adapted to rivers may have ways to anchor themselves and are strong swimmers. • Pollution and damming are two major threats to rivers.

  6. Freshwater- wetlands • Wetlands are covered in water for at least part of the year. • Wetlands help to clean and filter water. • Wetlands also help to reduce flooding because they can absorb much water. • Threats to wetlands include pollution and filling in for development.

  7. Wetlands - Marshes • Marshes are freshwater wetlands that have mostly non-woody plants.

  8. Wetlands – Marshes - Everglades • The Everglades in southern Florida are the largest marsh in the US • It is been greatly reduced in size due to development.

  9. Wetlands - swamps • Swamps are freshwater wetlands that contain woody plants

  10. Wetlands - Estuaries • An estuary is where a river runs into an ocean. There is varying salinity in an estuary. • Estuaries contain very diverse and abundant aquatic life. • Pollution and development are major threats.

  11. Marine – coral reef • Coral reefs are located in shallow, warm ocean waters. • There are made up of the casing of the animal coral. • They are extremely diverse. • Pollution is a major threat to coral reefs.

  12. Marine – Open Ocean • There are few plants in the open ocean. • Animal in the open ocean are streamlines for swimming long distances. • Pollution and over fishing are major threats

  13. Marine- polar • Many polar marine animals are migratory. • They are adapted to cold weather usually by storing blubber. • Disruption for oil drilling and global warming are major threats.

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