Life SciencesBiologyEcologyCommunity EcologyEvolutionary EcologyPopulation EcologyBiodiversityEcosystem StructureSpecies DistributionSpecies DiversitySpecies InteractionsSpecies RichnessBiodiversity-dynamics RelationshipsCompetitive HierarchiesEcosystem Self-organizationHierarchy Of Biological OrganizationSpecies Abundance DistributionsSpecies Diversity Indices