2 ECOLOGY

Apuntes

2 ECOLOGY 2.1 Individuals, populations, communities and ecosystems BIOSPHERE → an ecological system composed of individuals, populations, communities and ecosystems where life exists (Earth’s parts) HABITAT → location where a community/population/individual lives ↳ description: geographical /physical / type of ecosystem (with needed conditions) 1) SPECIES → group of organisms that can reproduce and produce a fertile o ff spring ↳ undergo classi fi cation (allows predictions of characteristics) ↳ has a BINOMIAL NAME → genus + species (ex: homo + sapiens ) TAXONOMY → study of naming/describing/classifying organisms 2) POPULATION → group of organisms of the same species (+same place/time) that can reproduce (interbreeding unit) 3) COMMUNITY → collection of interacting populations in an ecosystem 4) ECOSYSTEM → organisms, their physical environment and the interactions between living and non-living components ↳ OPEN SYSTEM ECOLOGICAL NICHE → role of a species in an ecosystem (abiotic + biotic interactions) ↳ place, temperature, needs, food, characteristics, role... ↳ can not be the EXACTLY the same for 2 species at the same place/tim...