View
214
Download
0
Category
Tags:
Preview:
Citation preview
THE BIOSPHERE IS THE GLOBAL ECOSYSTEM
ECOLOGY
• STUDY OF THE INTERACTIONS AMONG ORGANISMS AND BETWEEN ORGANISMS AND THEIR ENVIRONMENTS
BIOTIC FACTORS• (LIVING) • EXAMPLES:
PROKARYOTES, PROTISTS, ANIMALS,
FUNGI AND PLANTS
ABIOTIC FACTORS
• NONLIVING• PHYSICAL AND CHEMICAL CONDITIONS
ABIOTIC FACTORS
A. SUNLIGHTB. WATERC. TEMPERATURED. SOILE. WINDF. SEVERE DISTURBANCES
FIVE INCREASING BROAD LEVELS
A. INDIVIDUAL ORGANISMSB. POPULATIONSC. COMMUNITIESD. ECOSYSTEMSF. BIOSPHERE
Go to Section:
Levels of Organization
PATCHINESS OF BIOSPHERE
• NOT UNIFORM ACROSS THE EARTH• DUE TO DIFFERENCES IN ABIOTIC
FACTORS-UNEVEN HEATING FROM SUN
VARYING CLIMATES
UNEVEN HEATING OF EARTH’S SURFACE
RESULTS IN THREE DIFFERENT TEMPERATURE ZONES:
TROPICS
• REGION BETWEEN 23.5°N LATITUDE AND 23.5°S LATITUDE• WARMEST AREA
POLAR ZONES
• REGION NORTH OF ARCTIC CIRCLE- 66.5 °N LATITUDE AND REGION SOUTH OF ANTARCTIC CIRCLE-66.5 °S LATITUDE• COLDEST AREAS
TEMPERATE ZONES• REGIONS BETWEEN THE POLAR
ZONES AND TROPICS• SEASONAL CHANGES• LESS SEVERE COLD AND LESS
SEVERE HEAT
BIOMES• TERRESTRIAL ECOSYSTEMS THAT COVER
LARGE AREAS OF EARTHA. CHARACTERIZED BY COMMUNITIES OF
PLANTS AND OTHER ORGANISMS ADAPTEDTO ITS CLIMATE AND OTHER ABIOTICFACTORS
B. LANDSCAPES APPEAR SIMILAR BUT SPECIFIC ORGANISMS VARY IN DIFFERENT PARTS OF THE WORLD
Recommended