Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

22
Major Ecosystems of the World Chapter 6 Key Topics 1. Fire 2. Biomes 3. Aquatic Ecosytems

Transcript of Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Page 1: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Major Ecosystems of

the World

Chapter 6Key Topics1. Fire2. Biomes3. Aquatic Ecosytems

Page 2: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Fire

Fire Triangle?Fires Impact?Which biomes burn regularly?Current state of affairs?Crown Vs. Ground?Prescribed Burning?

Page 3: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Arizona Wallo Wildfire 2011 500K plus acres!

Ponderosa Pine Timber Operations Smoky the Bear Drought 4FRI 20-50 trees Vs. 500-1K

Page 4: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Earth’s Major Biomes

Page 5: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Arizona Biomes

Page 6: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Earth’s Major Biomes

Vertical Zonation: The Distribution of Vegetation on Mountains

Page 7: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Earth’s Major Biomes

Type of biome controlled by temperature and precipitation

9 Major Biomes1.Temperate Rain Forest2.Tropical Rain Forest3.Temperate Deciduous4.Boreal/Taiga5.Tundra6.Chaparral7.Deserts8.Savannah (equatorial)9.Temperate Grasslands

Page 8: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Primary Forest

Page 9: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Aquatic Ecosystems

Divisions:①Degree of Salt②DO③Light Penetration④Nutrients⑤Temperature⑥Wave action

Important Terms①Phytoplankton②Zooplankton③Nekton④Benthos⑤Detritus⑥Eutrophication

Page 10: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Aquatic Ecosystems

Headwaters•Tend to be narrow, swift, clear, cold, nutrient poor, and highly oxygenated

•Tend to be wide, slow, cloudy, warm, nutrient rich, and less oxygenated

Page 11: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Oxbow Lakes & Deltas

Page 12: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Aquatic EcosystemsFreshwater Ecosystems

Lakes and Ponds

Highly productive, high species richness - sunlight penetration / rooted plants

Photosynthetically productive - upper surface with light penetration

Page 13: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Aquatic Ecosystems

Freshwater Ecosystems

Lakes and Ponds

Not always present; anaerobic, dominated by decomposers - below light penetration

Page 14: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Thermocline - lakes

Freshwater Ecosystems

Thermal stratification in temperate lakes

Point of change between warm surface & cold depths

Page 15: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Turnover in Lakes

Nutrients!

Spring Turnover - Melting Ice (40C) & wind

Fall Turnover - cooling surface water & wind

Page 16: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Wetlands - Marshes and Swamps

•Highly productive

•Anaerobic

•Filters pollution

•Flood Control

•Recharging Centers

•Highly Threatened

•Ecosystem Services

Page 17: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Estuaries

Salt Marshes Mangrove Forests

Page 18: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Case-in-Point: The Everglades

Page 19: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Case-in-Point: The Chesapeake Bay

Ecosystem Service

Page 20: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Marine Zones

Marine Provinces1.Neritic2.Oceanic3.Pelagic4.Benthic

Page 21: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Photo BenthicPhoto Benthic Environment

1) Sea grasses

2) Kelp forests

3) Coral reefs

Page 22: Major Ecosystems of the World Chapter 6 Key Topics 1.Fire 2.Biomes 3.Aquatic Ecosytems.

Abyssal

*Marine Snow