BIO120H1 Lecture Notes - Lecture 2: Shortgrass Prairie, Pronghorn, Homeostasis
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BIO120H1 Full Course Notes
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Lecture 2: species ranges and the physical challenges of the environment: heat balance. Two types of range: ranges of tolerance and geographical ranges: a(cid:374)i(cid:373)als" geographi(cid:272)al ra(cid:374)ges ofte(cid:374) (cid:272)orrespo(cid:374)d to (cid:271)io(cid:373)es, i. e. , limited by climate and/or vegetation. Limited by other organisms (enemies, friends: transcend biomes (ecological versatility, super generalists, not at limits because of recent history (e. g. limited dispersal) Pronghorn: broad climate tolerance ability to exist in different temperatures, narrow habitat range (short-grass prairie biome, american high planes) Idiosyncharatic, species-specific habitat selection behaviour can greatly influence distributes: yellow-rumped warbler is an extreme habitat generalist, kirtla(cid:374)d"s (cid:449)ar(cid:271)ler is a parado(cid:454)i(cid:272)all(cid:455) e(cid:454)tre(cid:373)e ha(cid:271)itat spe(cid:272)ialist, breed only in jack pine forests of specific height & age. Transcending biomes: broad temperature tolerance & broad habitat range: tigers are generalists they can live in different environments from tropical to boreal forests. Limited by other animals coyotes: recent coyote expansion due to human extirpation of wolves, hu(cid:373)a(cid:374)s = (cid:449)ol(cid:448)es = (cid:272)o(cid:455)otes.
