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Enviornmental Scenice

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fiatagata faamau

on 29 March 2013

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Transcript of Enviornmental Scenice

Community Ecosystem By: Abe, Ona, Jessie, Katie & Skittle it's an assemblage of all the interacting population of different species of organisms in an AREA. Community Converts simple in organic Molecules into organic Molecules by the process of photosynthesis.

Example: Trees, flowers, grasses, ferns, Moses, algae. Producers Using of organic matter as a source of food

Example: Animals, Fungi, Bacteria and also Trees. Consumers Primary Consumers Herbivores- Eats plant directly.

Example: Grasshopper, elk, human vegetation Carnivore- Kills and eats animals
Examples: Wolfs, pike, dragonfly

Omnivore- Fats of both plants and Animals
Examples: Rats, Racoons, Most Humans

Scavenger- Fat meat but often gets it from animals that died by accident or illness, or were killed by other animals.
Example: Coyotes, Uuhures, Blowflies

Parasite- Lives in or on another living organism and get food from it.
Example: Tapeworms, many bacteria, and some other insect. Secondary Consumers Decomposes Returns once own organic matter to in-organic material; this is the complete cycle of ATOM.
Example: Fungus, bacteria, some insect and worms Biomes Biomes are terrestrial climax communites with wide
geographic distribution.
biomes are primarilly determined by climate but other factors may play a role such as in marine biomes for example

Major biomes of the world
desert
temperate grasslands
savanna
mediterranean shurbland
Tropical dry forest & rain forest
temperate deciduous forest
temperate rain forest
boreal forest SUCCESSION Success is the process which the communities that we see within nature established. It contains series of stages which actually result in the establishment of a peak community. It’s the stage which involves the changes of both biological and physical components of its habitat. For example: http://www.youtube.com/watch?v=ynzcUw9wv0E&feature=em-share_video_user A Climax Community is an ecological community of plants or animals that are able to exist in balance with each other in their environment. It is the final stage succession remaining unchanged until there is human interference.

Succession stops when species composition changes no longer occur with time, and this community is said to be a climax community.





Disturbances cause a quick change in the community






The gradual replacement of one community by another specie Climax Community Primary Community
It is proposed that as a general rule primary community assembly by autotrophs is preceded by a previously unrecognized heterotrophic phase that may be instrumental in facilitating the establishment of green plants and consolidating the assembly process.


 This heterotrophic stage, of variable duration, involves the allochthonous input of both dead organic matter and living invertebrates sufficient to allow the initial establishment of functioning communities comprised of scavenging detritivores and predators.


 Evidence for deposition of such materials onto newly exposed land surfaces and the development of such animal communities is summarized for a variety of sites and substrates worldwide.


 It is suggested that these heterotrophic communities conserve nutrients, particularly nitrogen, and facilitate the establishment of green plants. Pioneers/ soil builder (lichen/mosses/cryptogamics), weeds & grasses (fireweed lupine), shrubs annuals perennials (blue berry etc. and wild rose), early trees (aspen/alder/willow/birch) and etc. Primary Succession is a succession progression that begins with the total lack of organism and bare mineral surfaces or water. It's gradual growth of an ecosystem over long period of time.
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