Aquatic BiomesAquatic Biomes

Freshwater-lakes and pondsFreshwater-lakes and ponds

Littoral zone- shore line. Nutrient rich and diverse.Littoral zone- shore line. Nutrient rich and diverse. Benthic zone- little sunlight. Animals live off of decaying Benthic zone- little sunlight. Animals live off of decaying

matter that falls to the bottom.matter that falls to the bottom.

Freshwater-lakes and pondsFreshwater-lakes and ponds

Oligotrophic – Nutrient poor/oxygen rich. Oligotrophic – Nutrient poor/oxygen rich. Often sources that feed it are glaciers, Often sources that feed it are glaciers, mountainous regions.mountainous regions.

Eutrophic- Nutrient rich/oxygen poor. Fed Eutrophic- Nutrient rich/oxygen poor. Fed by steams with lots of dissolved minerals by steams with lots of dissolved minerals but the decaying organic matter increases but the decaying organic matter increases oxygen demand.oxygen demand.

Freshwater- lakes and pondsFreshwater- lakes and ponds

Often, newly formed lakes start as oligotrophic and Often, newly formed lakes start as oligotrophic and become eutrophic.become eutrophic.

Eutrophication can be accelerated by pollution that Eutrophication can be accelerated by pollution that cause algal blooms. (fertilizer runoff, sewage)cause algal blooms. (fertilizer runoff, sewage)

RiversRivers

Rivers at there starting Rivers at there starting pts. are usually high in pts. are usually high in oxygen and cold.oxygen and cold.

Plants and animals Plants and animals adapted to rivers may adapted to rivers may have ways to anchor have ways to anchor themselves and are themselves and are strong swimmers.strong swimmers.

Pollution and damming Pollution and damming are two major threats to are two major threats to rivers.rivers.

Freshwater- wetlandsFreshwater- wetlands

Wetlands are covered in water for at least Wetlands are covered in water for at least part of the year.part of the year.

Wetlands help to clean and filter water.Wetlands help to clean and filter water. Wetlands also help to reduce flooding Wetlands also help to reduce flooding

because they can absorb much water.because they can absorb much water. Threats to wetlands include pollution and Threats to wetlands include pollution and

filling in for development.filling in for development.

Wetlands - MarshesWetlands - Marshes

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

Wetlands – Marshes - EvergladesWetlands – Marshes - Everglades

The Everglades in The Everglades in southern Florida are southern Florida are the largest marsh in the largest marsh in the USthe US

It is been greatly It is been greatly reduced in size due to reduced in size due to development. development.

Wetlands - swampsWetlands - swamps

Swamps are freshwater wetlands that contain Swamps are freshwater wetlands that contain woody plantswoody plants

Wetlands - EstuariesWetlands - Estuaries

An estuary is where a An estuary is where a river runs into an river runs into an ocean. There is ocean. There is varying salinity in an varying salinity in an estuary.estuary.

Estuaries contain very Estuaries contain very diverse and abundant diverse and abundant aquatic life.aquatic life.

Pollution and Pollution and development are development are major threats.major threats.

Marine – coral reefMarine – coral reef

Coral reefs are Coral reefs are located in shallow, located in shallow, warm ocean waters.warm ocean waters.

There are made up of There are made up of the casing of the the casing of the animal coral.animal coral.

They are extremely They are extremely diverse.diverse.

Pollution is a major Pollution is a major threat to coral reefs.threat to coral reefs.

Marine – Open OceanMarine – Open Ocean

There are few plants There are few plants in the open ocean.in the open ocean.

Animal in the open Animal in the open ocean are streamlines ocean are streamlines for swimming long for swimming long distances.distances.

Pollution and over Pollution and over fishing are major fishing are major threatsthreats

Marine- polarMarine- polar

Many polar marine Many polar marine animals are migratory.animals are migratory.

They are adapted to cold They are adapted to cold weather usually by weather usually by storing blubber.storing blubber.

Disruption for oil drilling Disruption for oil drilling and global warming are and global warming are major threats.major threats.