Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download 14.1 Habitat And Niche
Document related concepts
Overexploitation wikipedia , lookup
Latitudinal gradients in species diversity wikipedia , lookup
Wildlife corridor wikipedia , lookup
Extinction debt wikipedia , lookup
Restoration ecology wikipedia , lookup
Biogeography wikipedia , lookup
Island restoration wikipedia , lookup
Assisted colonization wikipedia , lookup
Theoretical ecology wikipedia , lookup
Ecological fitting wikipedia , lookup
Biological Dynamics of Forest Fragments Project wikipedia , lookup
Biodiversity action plan wikipedia , lookup
Occupancy–abundance relationship wikipedia , lookup
Mission blue butterfly habitat conservation wikipedia , lookup
Reconciliation ecology wikipedia , lookup
Habitat destruction wikipedia , lookup
Source–sink dynamics wikipedia , lookup
Transcript
14.1 Habitat And Niche KEY CONCEPT Every organism has a habitat and a niche. 14.1 Habitat And Niche A habitat differs from a niche. • A habitat is all aspects of the area in which an organism lives. – biotic factors – abiotic factors • An ecological niche includes all of the factors that a species needs to survive, stay healthy, and reproduce. – food – abiotic conditions – behavior Fig. A lion must hunt and kill its prey in order to survive on the African savannah. Its role as a top predator is part of the lion's niche. 14.1 Habitat And Niche Resource availability gives structure to a community. • Species can share habitats and resources. • Competition occurs when two species use resources in the same way. • Competitive exclusion keeps two species from occupying the same niche. 14.1 Habitat And Niche • Competitive exclusion has different outcomes. – One species is better suited to the niche and the other will either be pushed out or become extinct. – The niche will be divided. – The two species will further diverge. Fig. Even though bees and butterflies both use these flowers for food, they occupy different niches. Many species with similar niches can coexist. 14.1 Habitat And Niche • Ecological equivalents are species that occupy similar niches but live in different geographical regions. Madagascar South America
