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A presentation of concepts that falls around on the idea of ecosystems.
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- 2. ECOSYSTEM • AN ECOSYSTEMIS A STRUCTURAL AND FUNCTIONAL UNIT OF ECOLOGY WHERE THE LIVING ORGANISMS INTERACT WITH EACH OTHER AND THE SURROUNDING ENVIRONMENT. • IT IS A CHAIN OF INTERACTIONS BETWEEN ORGANISMS AND THEIR ENVIRONMENT. • THE TERM “ECOSYSTEM” WAS FIRST COINED BY A.G. TANSLEY, AN ENGLISH BOTANIST, IN 1935.
- 3. STRUCTURE OF ANECOSYSTEM
- 4. FUNCTIONS OF ECOSYSTEM •IT REGULATES THE ESSENTIAL ECOLOGICAL PROCESSES, SUPPORTS LIFE SYSTEMS AND RENDERS STABILITY. • IT IS ALSO RESPONSIBLE FOR THE CYCLING OF NUTRIENTS BETWEEN BIOTIC AND ABIOTIC COMPONENTS. • IT MAINTAINS A BALANCE AMONG THE VARIOUS TROPHIC LEVELS IN THE ECOSYSTEM. • IT CYCLES THE MINERALS THROUGH THE BIOSPHERE. • THE ABIOTIC COMPONENTS HELP IN THE SYNTHESIS OF ORGANIC COMPONENTS THAT INVOLVE THE EXCHANGE OF ENERGY.
- 5. TERRESTRIAL ECOSYSTEM • THETERRESTRIAL ECOSYSTEM REFERS TO THE ECOSYSTEM OF DIFFERENT LAND FORMS ONLY. THE ATMOSPHERE IN THE TERRESTRIAL ECOSYSTEM IS QUITE DIFFERENT FROM THE AQUATIC ECOSYSTEM. • THE MAJOR TYPES OF ECOSYSTEMS ARE FOREST, DESERT, RAIN FOREST, GRASSLAND, TUNDRA, SAVANNA AND MOUNTAIN ECOSYSTEM.
- 6. TERRESTRIAL ECOSYSTEM -FOREST FOREST ECOSYSTEM HAS A HUGE VARIETY OF FLORA AND FAUNA LIVING TOGETHER IN A SPECIFIC AREA. Reset.org Utopia.org
- 7. TERRESTRIAL ECOSYSTEM -DESERT • DESERT IS ONE OF THE MOST DRIED LAND AREAS ON THIS PLANET THAT RECEIVES VERY LITTLE PRECIPITATION ANNUALLY. IT IS A LAND WITH VERY LESS RAINFALL THROUGHOUT THE YEAR MEASURED LESS THAN 50 CM A YEAR. • DESERT ECOSYSTEM IS THE DRIEST ECOSYSTEM OF THE EARTH AND THIS IS THE REASON IT HAS LESS VEGETATION AND LESS DIVERSITY OF LIFE.
- 8. TERRESTRIAL ECOSYSTEM –RAINFOREST • A RAINFOREST ECOSYSTEM IS COMPOSED OF TALL EVERGREEN TREES. • RAINFORESTS ARE FEATURED WITH HEAVY ANNUAL RAINFALL, HIGH AVERAGE TEMPERATURE, POOR QUALITY SOIL DUE TO LACK OF NUTRIENTS, AND RICH IN BIODIVERSITY. • RAINFORESTS GENERALLY GROW IN THE MOIST UPLANDS AND LOWLANDS NEAR THE EQUATOR BETWEEN TROPIC OF CANCER & TROPIC OF CAPRICORN.
- 9. TERRESTRIAL ECOSYSTEM –GRASSLAND • GRASSLAND ECOSYSTEM IS CHARACTERIZED BY A DRY CLIMATE THAT ALLOWS VERY LITTLE VEGETATION MOSTLY DOMINATED BY DIFFERENT SPECIES OF GRASSES. • THE GRASSES REPRODUCE IN GRASSLANDS THROUGH THE POLLINATION PROCESS OR IN SOME CASES THROUGH PRODUCING PLANTS FROM THEIR ROOTS.
- 10. TERRESTRIAL ECOSYSTEM -TUNDRA • THE TUNDRA REGION REFERS TO THE LOWER ALTITUDES OF POLAR AREAS. • A BARREN LAND CHARACTERIZED WITH BLACK-MESSY SOIL PERMANENTLY FROZEN DOMINATED WITH VEGETATION OF LICHENS, MOSSES, HERBS & SHRUBS IS KNOWN AS TUNDRA ECOSYSTEM.
- 11. TERRESTRIAL ECOSYSTEM -SAVANNAH • SAVANNA IS AN ECOSYSTEM WITH A HUGE GRASSLAND AREA SPREAD IN ACRES. • IT IS MOSTLY KNOWN AS A DRY REGION, BUT IT IS WET AT THE SAME TIME. • THE SAVANNA IS A NATURAL LANDFORM WITH GRASSES ALL AROUND PROVIDING A PERFECT ENVIRONMENT, ESPECIALLY FOR GRAZING ANIMALS.
- 12. TERRESTRIAL ECOSYSTEM -MOUNTAIN • MOUNTAIN ECOSYSTEM CONSISTS OF STUNNING LANDSCAPES, A LUSH GREEN VIEW, AND BREATH- TAKING SCENERIES. • MOUNTAIN ECOSYSTEM IS A COMPLEX HABITAT FOR LIVING ORGANISMS TO SURVIVE. • THE LOWER SLOPES OF A MOUNTAIN ECOSYSTEM ARE USUALLY COVERED WITH FORESTS. AS YOU GO HIGHER, THE VEGETATION BECOMES LESS, AND ON EXTREME TIPS, THE VEGETATION BECOMES EQUALS TO ZERO.
- 13. AQUATIC ECOSYSTEM • THEECOSYSTEM FOUND IN DIFFERENT WATER BODIES IS KNOWN AS AN AQUATIC ECOSYSTEM. • THE MAJOR TYPES OF AQUATIC ECOSYSTEMS ARE – MARINE ECOSYSTEMS AND FRESHWATER ECOSYSTEMS.
- 14. AQUATIC ECOSYSTEM -FRESHWATER • FRESHWATER ECOSYSTEMS CAN BE FOUND IN STREAMS, RIVERS, SPRINGS, PONDS, LAKES, BOGS AND FRESHWATER SWAMPS. • THEY ARE SUBDIVIDED INTO TWO CLASSES: THOSE IN WHICH THE WATER IS NEARLY STATIONARY, SUCH AS PONDS, AND THOSE IN WHICH THE WATER FLOWS, SUCH AS CREEKS. • FRESHWATER ECOSYSTEMS ARE HOME TO MORE THAN JUST FISH: ALGAE, PLANKTON, INSECTS, AMPHIBIANS AND UNDERWATER PLANTS ALSO INHABIT THEM.
- 15. AQUATIC ECOSYSTEM -BRACKISH/ESTUARINE • ESTUARINE ECOSYSTEMS OCCUR WHERE A CREEK MEETS THE SEA. ESTUARIES ARE WHERE FRESH AND SALTWATER MIX AND BECOME PART SALTY OR BRACKISH WATER THAT MIXES WITH DEPOSITED SEDIMENTS AND WHERE EVERYTHING IS ALSO INFLUENCED BY THE RISE AND FALL OF THE TIDE. • ESTUARIES ARE TYPICALLY SMALL; OCCURRING AS MEADOWS, MARSHES, AND TIDAL FLATS, WITH A RANGE OF VEGETATION TOLERANT TO FRESH, BRACKISH OR TOTALLY SALT CONDITIONS.
- 16. SALTWATER/MARINE ECOSYSTEM • MARINEECOSYSTEMS DIFFER FROM FRESHWATER ECOSYSTEMS IN THAT THEY CONTAIN SALTWATER, WHICH USUALLY SUPPORTS DIFFERENT TYPES OF SPECIES THAN DOES FRESHWATER. • MARINE ECOSYSTEMS ARE THE MOST ABUNDANT TYPES OF ECOSYSTEMS IN THE WORD. • THEY ENCOMPASS NOT ONLY THE OCEAN FLOOR AND SURFACE BUT ALSO TIDAL ZONES, ESTUARIES, SALT MARSHES AND SALTWATER SWAMPS, MANGROVES AND CORAL REEFS.
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