1 / 17

ECOLOGY---

ECOLOGY---. Ecosystems and Communities. What is Climate?. Climate is the average yearly condition of temperature and precipitation in a region. It’s caused by the latitude, wind, ocean currents, and the shape and elevation of land masses.

hardman
Télécharger la présentation

ECOLOGY---

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. ECOLOGY--- Ecosystems and Communities

  2. What is Climate? • Climate is the average yearly condition of temperature and precipitation in a region. • It’s caused by the latitude, wind, ocean currents, and the shape and elevation of land masses. • Climate affects ecosystems, because all organisms have certain needs for temperature.

  3. Biomes and Climate • A biome is a group of communities on land that covers a large area and is characterized by certain soil and climate. • A microclimate is a climate in a small area that differs from the climate around it (ex: fog on certain streets in a city and sunny in the rest of the city).

  4. The Major Biomes • There are ten major biomes: • Tropical Rain Forest • Tropical Dry Forest • Tropical Savanna • Desert • Temperate Grassland • Temperate Woodland and Shrubland • Temperate Forest • Northwestern Coniferous Forest • Boreal Forest (Taiga) • Tundra

  5. What is Weather? • Weather is the day-to-day condition of earth’s atmosphere at a particular time and place. • Rusty Garrett-News 10

  6. The Greenhouse Effect • The greenhouse effect keeps the temperature on Earth within a good range for life. • The gases in the Earth’s atmosphere trap heat.

  7. Greenhouse Effect

  8. The Effect of Latitude on a Climate • Differences in latitude determine the amount of sunlight that hits and then heats the Earth’s surface. • Differences inheatingcause three main climate zones: • polar zones-very cold areas • temperate zones- ranges from hot to cold depending on the season • tropical zones- always warm

  9. How The Sun Hits the Earth POLAR ZONE TEMPERATE TROPICAL ZONE TEMPERATE POLAR ZONE

  10. Biotic and Abiotic Factors • Organisms are influenced by biological (biotic) and physical (abiotic) factors. • Biotic factors include all living things. • Abiotic factors include temperature, soil type and other non-living factors. • Where an organism lives is called its habitat.

  11. Abiotic Factors Biotic Factors

  12. The Niche • A niche is the full range of physical and biological conditions in which an organism lives and how that organism uses those conditions.

  13. 3 Species of Warblers and Their NICHES

  14. Community Interactions • communities interact in one of three ways: 1) competition - organisms try to use the same resources they need to live. Competition often results in one organism dying out. 2) predation - this occurs when one organism (predator) captures and eats another (prey).

  15. Community Interactions (cont.) 3) symbiosis - occurs when two species live together in one of three ways: • mutualism - both species benefit from the relationship • commensalism - one species benefits and the other is neither helped nor harmed. • parasitism- one species benefits by living in or on the other and the other is harmed

  16. Ecological Succession • Ecosystems are constantly changing in response to natural and human disturbances. • As an ecosystem ages, older inhabitants die out and new organisms move in.

  17. Why Conserve Our Biosphere? • Most people want to preserve our biosphere for future generations. • Conservation, in ecology, includes wise management of natural resources, protecting our habitats and wildlife, and enforcing environmental laws. • Today, our efforts are focused on protecting entire ecosystems. This will ensure that the natural habitats and the interactions of many different species are preserved at the same time.

More Related