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The water cycle The Carbon Cycle The Nitrogen Cycle The Phosphorus Cycle The cycling of nutrients through the biosphere for use throughout the system.

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Presentation on theme: "The water cycle The Carbon Cycle The Nitrogen Cycle The Phosphorus Cycle The cycling of nutrients through the biosphere for use throughout the system."— Presentation transcript:

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2 The water cycle The Carbon Cycle The Nitrogen Cycle The Phosphorus Cycle The cycling of nutrients through the biosphere for use throughout the system by food chains, webs, and the biosphere. The nutrients: carbon, hydrogen, oxygen, Nitrogen, and Phosphorus

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4 Continuously moves throughout the atmosphere, the land, and waters (oceans, lakes and rivers) Water vapor condenses in the air and falls as precipitation then gets back into the air during evaporation Evaporation from plants is called Transpiration

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6 transpiration The Water Cycle

7 The continuous movement of carbon and oxygen from non-living into living organisms CO2 in atmosphere build organic molecules Plants use CO2 to produce O2 This exchange of CO2 for O2 is called Respiration (cellular respiration) Combustion or burning releases carbon Burning trees, fossil fuels: oil and coal

8 The Carbon Cycle

9 Nitrogen Is needed to make proteins (DNA, RNA, Enzymes) Is a process where nitrogen circulates among the air, soil, water, and organisms Nitrogen Fixation: where bacteria that live in soil or on roots, or lightening change chemical composition of N2 into ammonia – a useable form of nitrogen by living organisms

10 Nitrification: The changing of un-useable nitrogen, nitrite, into useable Nitrate De-nitrification: Changes nitrate into nitrogen gas that returns to atmosphere

11 10 Cyanobacteria – blue-green algae Free living soil bacteria Mycorrhizae: Symbiotic bacteria living in root nodules Chemical Fixators: Lightening

12 11 Root nodules on Cassia fasciculata

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14 The Nitrogen Cycle

15 An important ingredient in DNA and RNA and all proteins Flows in organism in different chemical forms into the surroundings and back into organisms Doesnt enter atmosphere In soil and rock. Dissolves and is used by plants Plants are eaten by animals, animals die, cycle begins again

16 15 Phosphorous Cycle Phosphate – PO 4 -3

17 The Phosphorus Cycle

18 Cycles are recycled through the biospere by food webs, the hydrosphere, the biosphere, the geosphere, atmosphere Energy flows through food webs, is made by plants initially from the sun Is used by living organisms, passed on, and is lost into space

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22 The orderly, natural changes and species replacements that take place in the communities of an ecosystem. Over time biotic and abiotic factors create ecological conditions that are suitable for some organisms and unsuitable for others. Changing the ecosystem along the way.

23 Succession beginning in an area or surface on which there has never been life before Exposed rock Lichen & mosses Grasses, herbs, scrubs, larger scrubs, tree seedlings Aspen, jack Spruce, pines White spruce, Balsam fur, Paper birch TIME

24 Occurs in a region in which life has existed before, but the previous community structure has been disrupted Frequently seen in North Georgia where cultivated fields like old cotton or soybean fields are abandoned

25 Secondary Succession What could cause the previous ecological community to have been disrupted? FLOOD LANDSLIDE FIRE

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27 A large region characterized by a specific type of climate and certain types of plants and animals


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