POPULATIONDISTRIBUTIONANDABUNDANCEECOLOGY:CONCEPTSANDAPPLICATIONSDistributions of Barnacles Along anIntertidal Exposure Gradient
➢ Distributions of Barnacles Along an Intertidal Exposure Gradient ECOLOGY: CONCEPTS AND APPLICATIONS POPULATION DISTRIBUTION AND ABUNDANCE
ChthamalusstellatuslarvaesettleBalanus balanoides larvae settlethroughout intertidal zone butin middle and upperintertidalsurvive to adults mainly inzones but surviveto adults mainlymiddleto lowerintertidal zonesinupperintertidal zoneBalanusChthamalusLarvaeAdultsLarvaeAdultMean high spring tideMean high neap tideMean tide levelMean lowneap tideMean low spring tideFIGURE7.8Distributions of two barnacle species within the intertidalzone(datafromConnell1961)