GEV 4517 Lecture Notes - Lecture 6: Trifolium Repens, Lysis, Botfly

• School: Villanova University
• Department: Geography and the Environment
• Course: GEV 4517
• Professor: Melanie Vile

Document Summary

Mating system strategies polygynous bower birds + selective pressures (pretty bowers are preferred) Ad(cid:448)a(cid:374)tageous (cid:271)e(cid:272)ause (cid:455)ou do(cid:374)"t (cid:449)aste nrg heating body all the time. Heterotherms: temps vary widely with temperature gradients/ environmental conditions (lizard: endotherms: generate own heat. Homeotherms: maintain narrow range of temperatures (jaguar) Affects variety of processes including metabolic rates and body size: arctic muskox= thick fur, lots of fat, and large, can survive in -40 f. Other influences kill off organisms: fo(cid:454) (cid:449)ith (cid:373)a(cid:374)ge loses fur (cid:894)s(cid:272)rat(cid:272)hi(cid:374)g(cid:895), (cid:272)a(cid:374)"t sur(cid:448)i(cid:448)e the te(cid:373)peratures. Affects behavior: animals huddle, hibernate, have long hair/feathers, endotherms shiver. Coral reefs: (cid:449)he(cid:374) it"s (cid:374)ot a(cid:374) el ni(cid:374)o (cid:455)ear, (cid:272)old up(cid:449)elli(cid:374)g affects coral deposition. No matter how large the range of temperatures an organism can exist in, the range is there and not all temperatures can be adapted to. Keeping warm in the cold (wolves curl up) Bears hibernate (pulse, body temp and heartrate decrease)