Download presentation
Presentation is loading. Please wait.
1
Weather vs climate How would you describe your climate, or the average, year-after-year conditions of temperature and precipitation where you live? Does your area receive a great deal of precipitation—rain and snow—or is your area very dry?
2
Weather Weather is the day-to-day condition of Earth’s atmosphere at a particular time and place.
3
Climate Climate is the average, year-to-year conditions of temperature and precipitation in a particular region.
4
Different Latitudes Greenhouse Effect
The greenhouse effect is the natural insulating blanket or atmosphere that allows life to exist on earth. Greenhouse gases such as carbon dioxide, methane and water vapor trap heat energy. Human activities have increased the amount of green house gases which is a cause of global climate change Different Latitudes Greenhouse Effect 90°N North Pole Sunlight Sunlight 66.5°N Arctic circle Some heat escapes into space Sunlight Tropic of Cancer 23.5°N Equator Most direct sunlight 0° Greenhouse gases trap some heat Tropic of Capricorn 23.5°S Sunlight Atmosphere Arctic circle 66.5°S Sunlight Earth’s surface 90°S South Pole Because earth is a sphere tilted on its axis, solar radiation strikes different parts of the Earth’s surface at an angle that varies throughout the year. Go to Section:
6
factors and physical (non-living) or abiotic factors.
Ecosystems are influenced by a combination of biological (living) or biotic factors and physical (non-living) or abiotic factors. Examples: Temperature Precipitation Nutrients Soil type Abiotic Factors Biotic Factors Examples: Moose Birds Trees Rabbit ECOSYSTEM Go to Section:
7
No two species can occupy the same niche due to competition
Section 4-2 Cape May Warbler Feeds at the tips of branches near the top of the tree Bay-Breasted Warbler Feeds in the middle part of the tree Yellow-Rumped Warbler Feeds in the lower part of the tree and at the bases of the middle branches Spruce tree Go to Section:
8
A relationship in which one animal (predator) captures and feeds
on another animal (prey) is a predator-prey relationship. A relationship in which herbivores feed on producers is herbivory. Both interactions affect the size of populations in a community. Predators and prey evolve together. Herbivores and producers evolve together. Predator-prey relationship Herbivory
13
A biome is a group of ecosystems that have the same climate and similar dominant communities
A biome is defined by its unique set of abiotic factors, climate and characteristic ecological community.
14
Ten Major Biomes Compare/Contrast Table Biome Soil Diversity Trees
Precipitation Temperature Soil Diversity Trees Grasses Tropical Rain Forest high hot poor dense sparse Tropical Dry Forest variable mild rich moderate medium Tropical Savanna clay Desert low Temperate Grassland summer hot absent Temperate woodland and Shrubland summer low, winter moderate Temperate Forest summer moderate, winter cold Northwestern Coniferous Forest summer mild, winter cold rocky, acidic Boreal Forest summer mild, winter cool poor, acidic Tundra summer mild, winter cold Compare/Contrast Table Section 4-3 Go to Section:
15
The major categories of freshwater ecosystems are:
Rivers and streams Lakes and ponds Freshwater wetlands
16
Estuaries are important wetlands which are a mixture of fresh and
salt water The marine ecosystem (ocean) is divided into zones based on depth and distance to shore.
17
Zones of the marine ecosystem
land Photic zone 200m Coastal ocean 1000m Open ocean 4000m Aphotic zone 6000m Ocean trench 10,000m Continental shelf Continental slope and continental rise Abyssal plain Go to Section:
Similar presentations
