Unit E: section 3

Diversity

All the various life forms in an environment.

Lake zones

Different zones are found in lakes, including the upper zone, middle zone, and lowest or deepest zone.

Estuary

A diverse ecosystem where fresh water and salt water mix, creating brackish water.

Intertidal zone

1st of the 4 Ocean zones.The shoreline of an ocean where plants and animals have adapted to waves.

Continental shelf

2nd of the 4 Ocean zonesThe warmer water area of the ocean with full light penetration, supporting a variety of plants and animals due to nutrient-rich food sources.

Oceanic (Deep ocean) zone

3rd of the 4 Ocean zones.The deep ocean zone with low oxygen and no light, where animals feed on waste from upper zones.

Abysmal zone: Deepwater

no light and extreme pressure

Adaptation

Any physical or behavioral characteristic that increases an organism's rate of survival in an aquatic environment.

Species

Individuals that resemble each other and can reproduce together, producing viable offspring. (geese)

Population

Members of a species living in a particular area. (gaggle, group of geese)

Community

Different populations of organisms living in a common area. (fowl, group of birds)

Seasonal change

Population changes based on temperature fluctuations or wet/dry seasons.

Short-term change

Population fluctuations due to human activity or extreme weather events, with eventual recovery.

Long-term change

Population changes caused by human activity, extinction, or invasive species depleting resources.

Range of tolerance

Each species has a minimum and maximum amount of a substance they can tolerate, affecting their survival.

Five Factors in Aquatic Adaptations

Temperature, Light, Salinity, Pressure, Water Movement

Upper zone

1 of 3. area from the shore to where aquatic plants stop growing

Middle zone

2 of 3. open water area that still has light penatration

Lowest or deepest zone

3 of 3. No light penetration's, organisms feed on waste from upper zones