* [[en:ecovirt:roteiro:neutr:biogeorcmdr|{{:ecovirt:logorcmdr01.png?20|}}]] * [[en:ecovirt:roteiro:neutr:biogeor|{{:ecovirt:rlogo.png?20|}}]] * [[en:ecovirt:roteiro:neutr:biogeor_passo|{{:ecovirt:prompt.png?20}}]] ====== Island Biogeography - Tutorial for EcoVirtual ====== {{section>ecovirt:roteiro:neutr:biogeo_base#biogeografia_de_ilhas}} ===== MacArthur & Wilson equilibrium ===== {{section>en:ecovirt:roteiro:avisos#roteiro_r}} {{section>en:ecovirt:roteiro:neutr:biogeo_base#macarthur_wilson_equilibrium}} In {{:ecovirt:rlogo.png?20|}} load the EcoVirtual package. We will use the function **animaColExt** to see the colonization and extinction processes. This function has 2 parameters: ^Parameter^ definition^ options ^ |Ext| extinction rate | 'fix' - stable rate; 'crs' - increasing rate; 'dcr' - decreasing rate| |Col| colonization rate| ' 'fix' - stable rate; 'crs' - increasing rate; 'dcr' - decreasing rate| Selct the options **Ext='fix'** and **Col=fix** and see what happens! Now try to change between states of **Ext** e **Col**.What happens with the equilibrium point in each combination? Why? ===== More islands ==== {{section>en:ecovirt:roteiro:neutr:biogeo_base#more_islands}} We will use the function **bioGeoIsl** to combine the islands and see if, in the end, you can find the species-area relationship, our first step. By the way, this theory was created to explain species-area relationship. ;-) {{section>en:ecovirt:roteiro:neutr:biogeo_base#parametros}} ===== To learn more ===== {{section>en:ecovirt:roteiro:neutr:biogeo_base#to_learn_more}}