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2.4.1 Biomes and aquatic ecosystems

2.4.1 Biomes and aquatic ecosystems. Major Ecosystems of the World. Biomes. Biomes of the World. 1. The Tundra. 1. Extremely cold climate. 2. Low biotic diversity. 3. Simple vegetation structure. 4. Permafrost  limited drainage. 5. Short growing season.

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2.4.1 Biomes and aquatic ecosystems

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  1. 2.4.1 Biomes and aquatic ecosystems

  2. Major Ecosystems of the World Biomes

  3. Biomes of the World 1. The Tundra 1. Extremely cold climate 2. Low biotic diversity 3. Simple vegetation structure 4. Permafrost  limited drainage 5. Short growing season 6. Energy and nutrients in the form of dead organic material 7. Large population oscillations alpine vs arctic tundra

  4. Biomes of the World 3. Temperate Rain Forest 1. Located on NW coast of No. America 2. Moderate climate and high annual rainfall 3. Relatively nutrient-poor soils 4. Forests subject to heavy logging pressure.

  5. Biomes of the World 4. Temperate Deciduous Forest 1. Located in the mid-latitude areas 2. Four distinct seasons 3. Short, cold winters & long, hot, wet summers 4. Trees adapted to the winter with a period of dormancy and thick bark to protect them from the cold weather

  6. Biomes of the World 5. Grasslands 1. Composed of a rich mix of grasses and forbs and some of the world's most fertile soils 2. Semiarid, continental climate 3. Summers tend to be dry 4. Most precipitation falls at start of growing season

  7. Biomes of the World 6. Chaparral (aka: scrub forest) 1. Composed of drought tolerant trees, shrubs, and grasses 2. Occur in California, coastal Mediterranean, and south coast of Australia 3. Plants go dormant during very dry summer 4. Most precipitation falls in winter

  8. Biomes of the World 7. Deserts 1. Arid, with annual rainfall less than 10 in. 2. Plants adapted to conserve water over long periods (e.g. cacti, sagebrush, and mesquite) or germinate, develop to maturity, flower, and produce a new crop of seeds within a few weeks following a rain event 3. Animals burrow to escape the heat of the desert sun

  9. Biomes of the World 8. Savanna 1. Tropical grasslands 2. Tropical climate with alternate wet and dry seasons 3. Characterized by a continuous cover of perennial grasses

  10. Biomes of the World 9. Tropical Rain Forests 1. Earth's most complex biome in terms of structure and species diversity 2. Climate characterized by abundant precipitation and year round warmth 3. Trees vertically stratification into three distinct layers

  11. Aquatic Ecosystems Trophic Levels

  12. Aquatic Ecosystems Environmental Factors Temperature

  13. Aquatic Ecosystems Environmental Factors Light

  14. Aquatic Ecosystems The Black Sea 16 PPT Baltic Sea 5-15 PPT Pacific Ocean 36 PPT Lake Michigan 0.5 PPT The Red Sea & The Persian Gulf 40 PPT The Dead Sea 332 PPT Environmental Factors Salinity

  15. Aquatic Ecosystems Environmental Factors Currents

  16. Aquatic Ecosystems Dissolved Oxygen (mg/L) Dissolved Oxygen Temperature Depth (m) Depth (m) Temperature (ºC) Environmental Factors Dissolved Oxygen

  17. Aquatic Ecosystems Zonation

  18. Aquatic Ecosystems Human Impacts Waterways across the United States are contaminated by a medicine chest of antibiotics, hormones, caffeine, painkillers and other drugs Agricultural runoff can carry fertilizers, including traces of antibiotics and hormones, into waterways

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