BIOL 215 Lecture Notes - Lecture 12: Solomon Judah Loeb Rapoport
First&succession&-fast&growth,&wind&dispersal,&small&seeds,&good&at&claiming&ground
Most&species&are&broadly&distributed&-we&find&them&in&many&places
Large&scale&geographical&pattern&of&distribution&-why&we&find&species&where&we&find&
them&(where?&How&abundant?&How&dense?&Is&it&widespread?&Shape?)
Communities&are&controlled&by&dispersal&and&speciation.&It`s&a&chance&at&random&at&
the&next&tree&that&will&take&the&space&of&the&previous&tree.
Range&size&-space&in&which&you&live
Distribution&-space&occupied&for&the&entire&species
Animals&at&larger&latitudes&have&larger&ranges&(environment&isn`t&as&rich)&-Rapoport&
rule
Hanski`s&rule&-range&size&and&population&abundance&are&positively&correlated
Temperature&and&moisture&are&the&key&determinants&of&distribution&(biomes)
To&understand&distribution,&you&need&to&understand&dispersal&and&the&limitation&rate&
of&distribution
Diffusion&dispersal&-gradual&dispersal&over&the&landscape
Random&/®ular&/&clumped&distribution-regular&is&usually&for&defense,&some&
phenomena
Seven&different&forms&of&rarity&-wide&or&narrow&geographic&distribution
Habitat&specificity&-broad,&restricted&(coastline,&or&everywhere)
(wide,&broad&and&somewhere&large&-not&rare)
Somewhere&large&or&everywhere&small&populations
Geographic+distributions+and+patterns
Tuesday,& November& 14,&2017
1:09&PM
