Are plants important for humans? -food, clothing, shelter, aesthetics, health - oxygen; captures energy from the sun - absorption of contaminants from air, soil, & water -medicines, cosmetics - erosion control - web of life
Where do plants grow? -natural plant systems -human cultivated systems
Natural plant systems -areas where plants grow naturally -ecosystems; many different types occur on Earth -natural systems are beneficial for humans (ecosystem services)
CULTIVATED PLANT SYSTEMS -human-made, controlled ecosystems -agriculture agronomy; grains, agronomic crops, forage horticulture; fruit/vegetables & ornamental crops -landscaping, vineyards hydrophobic, botanic garden forestry; timber, resin, syrup -Original source of plants for cultivated, managed agricultural systems & 'new' plants -naturally
Biome - climatically/geographically defined areas with similar conditions
-similar communities of plants, animals, and micro organisms 7 major biomes Tundra, Taiga, Temperate Forest, Tropical Rainforest, Grassland, Desert, Ocean
Tundra Biome not so many plants, lots of diverse bacteria tree growth is restricted by low temps/ short growing seasons Vegetation - dwarf shrubs, grass, moss, lichens 2 Types of Tundra Arctic & Antarctica Alpine - high altitude mts.
Lecture 9/1 - Biomes
Tundra Biome Permafrost - frozen soil -soil is frozen in winter -permafrost melts within a few inches of the surface in the summer. -only short plants/grasses can grow -not enough soil for trees to develop
Taiga Biome - Largest Terrestrial Biome -Russian word meaning 'dense evergreen forest' -largest terrestrial biome (land based) -southern parts are termed Boreal forest -negative fifty to thirty degrees Celsius throughout the year - 8+ months below 10 degrees celsius -conifer trees- spruce/ fir trees grow close together & their dark color helps absorb solar