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Presentation transcript:

Environmental Science Do Now 10-10-17 Explain the following image in terms of how the pond increases its biodiversity.

Environmental Science Do Now 10-10-17 Explain the following image in terms of how the pond increases its biodiversity.

Objectives Students will know how ecosystems evolve over time (ecological succession) by completing a poster project. Mastery: 770 points or better on ecological succession poster project Students will know the definition of a biome and the overall features of each major type of biome by performing a close reading and taking notes.

Biomes of the World Unit III: Biomes October 10, 2017

What is a Biome? A large, relatively distinct terrestrial or aquatic region with characteristic Climate Soil Plants Animals Interacting landscapes

Fill in your notes for eah biome on the biome worksheet As I present the information on the types of biomes, you will record your notes on a worksheet which will later be used to develop informative biome pamphlets/brochures.

Terrestrial Biomes

Using Precipitation And Temperature To Identify Biomes

Arctic Tundra Tundra Northernmost biome Frozen layer of subsoil (permafrost) Low-growing vegetation adapted to extreme cold/short growing season Plants include sedges, mosses, lichens, grasses and 400 varieties of flowers Animals include caribou, musk ox, arctic hare, voles and lemmings are the principal herbivores, which enable a few carnivores like the arctic fox, snow owl, polar bear, and wolf to survive.

Arctic Tundra

Taiga Taiga Coniferous trees dominate the taiga, or boreal forest Cold winters, short growing season, and acidic, mineral-poor soil Belted Across North America and Eurasia Plants include evergreen spruce, fir, pine, and the deciduous larch or tamarack Animals include fur-bearing predators like the lynx and members of the weasel family (e.g., wolverine, fisher, pine martin, mink, ermine, and sable). Herbivores include the snowshoe hare, red squirrel, lemmings, and voles.

Taiga

Temperate Forests Temperate Rain Forest Large conifers High precipitation 200 – 350 cm as rain and snow Average temperatures 0oC to 20oC Main stretch of this habitat is along the northwestern coast of North America from northern California though southern Alaska Plants include Douglas fir and Western red cedar, Mountain hemlock, Western hemlock, Sitka spruce and Lodgepole pine Animals include deer, bears, coyotes, slugs, grouse, etc.

Temperate Rain Forest

Temperate Rain Forest

Temperate Forests Temperate deciduous forest Precipitation relatively high (30 to 60 inches a year) Soils rich in organic matter Broad-leaf trees that lose their leaves seasonally dominate Average annual temperature in a deciduous forest is 50° F. Four distinct seasons - spring, summer, autumn, and winter Oaks, maples, hickory, elms Eagles, black bear, deer, squirrels, coyotes

Temperate Deciduous Forest

Grasslands Temperate grassland Chaparral Deep, mineral-rich soil Moderate but uncertain precipitation Well suited to growing grain crops Chaparral Thickets of small-leaf evergreens Climate of wet, mild winters and dry summers

Temperate Grassland

Chaparral

Significance Of Precipitation In Temperate Biomes

Dry Biomes - Deserts Desert Cold deserts in temperate climates Warm deserts in subtropical or tropical regions Low levels of precipitation Organisms with specialized water-conserving adaptations Cactus, roadrunners, peccary, yuccas, Gila monster, kangaroo rat, bobcat, etc

Desert

Tropical Biomes Savanna Tropical grassland Widely scattered trees interspersed with grassy areas Occurs in topical areas with low or seasonal rainfall Giraffes, elephants, lions, hyenas, springbok Acacia trees, elephant grass, baobab trees, Bermuda grass

Savanna

Tropical Biomes Tropical rain forest Mineral-poor soil High rainfall evenly distributed throughout the year (50 to 260 inches ) High species richness and high productivity Average temperature between 20oC to 34oC

Tropical Rain Forest

The World’s Major Biomes

Human Effect On Biomes Tundra Oil exploration and military exercises result in long-lasting damage Taiga And Temperate Rain Forests Clear-cut logging destructive Temperate and Deciduous Forests and Tropical Rain Forests Removed by logging and development

Aquatic Biomes

Aquatic Ecosystems Important environmental factors Salinity Amount of dissolved oxygen Availability of light for photosynthesis

Aquatic Life Aquatic life divided into Plankton Nekton Benthos Free-floating organisms Nekton Strongly swimming organisms Benthos Bottom-dwelling organisms

Freshwater Ecosystem Freshwater ecosystems include: Flowing-water ecosystems Streams and rivers Standing-water ecosystems Ponds and lakes Freshwater wetlands Estuaries

Features Of A Typical River

Estuary Estuaries Coastal body of water with access to both the ocean and fresh water from rivers Transition from land to sea; freshwater to salt water Called bays, lagoons, inlets, or sounds Shore birds, fish, crabs and lobsters, marine mammals, clams and other shellfish, marine worms, and sea birds

Zonation In A Large Lake

Thermal Stratification In A Temperate Lake

Freshwater Swamp

Marine Ecosystem Marine environments Intertidal zone Shoreline between low and high tides Benthic environment The ocean floor Neritic province Open ocean from shoreline to depth of 200 meters Oceanic province Ocean deeper than 200 meters

Zonation In The Ocean

Seaweeds In A Rocky Intertidal Zone

Sea Grass Bed

Coral Reef Organisms

Biogeography Study of the geographic distribution of plants and animals Each species originated from its center of origin Alfred Wallace divided the Earth’s land areas into six major biogeographic realms

Wallace’s Biogeographic Realms