BIOL10001 Lecture 13: BIOL10001 Lecture 13 Notes
20 Sep 2018
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Document Summary
Habitat for alpine animal populations is naturally fragmented due to variation in altitude. 0. 15% of australian landmass very small total area. Mean temperature of warmest month is less than 10 degrees (trees don"t thrive) Snow 2-3 months per year strongly seasonal conditions. Signi cant area for water supply recreation nature conservation (contains unique group of native species) Tasmania is further south, therefore alpine areas occur at a lower altitude. Permanent water & abundant moisture high rainfall, condensation, snow melt, Flora mostly herbs and lichens (i. e. small) - very low biological productivity. Also some energy input from sub-alpine areas through ying insects, wind-blown detritus, pollen and seeds. No truly alpine birds in australia - migrate seasonally e. g. ame robin. Low diversity of reptiles (only 1species found over 2000 min altitude) Ectotherms but not as diverse as in arid zone in uence of cold environmental temperatures) Lower energy requirements (alpine is energy poor environment)
