1. Some notes on tolerance curves and the ecological niche

3. Short-term shifts – physiological “adaptation”
Seasonal changes – acclimatization
Developmental changes (E. Werner (1984)) “ontogenetic niche”

4. Wilson’s warbler summer distribution

5. Wilson’s warbler winter distribution

6. Physiological “acclimatization” or “adaptation”
Acclimatization effects on final rectal temperature, heart rate, and sweat rate,
for a group of men exposed daily to 2 hr of hard work in a hot environment.
(after Leithead CS, Lind AR. Heat Stress and Heat Disorders Philadelphia, Pa.: FA Davis Co, 304)

7. EMILI GARCÍA-BERTHOU
Ontogenetic Diet Shifts and Interrupted Piscivory
in Introduced Largemouth Bass (Micropterus salmoides)
Internat. Rev. Hydrobiol –363

8. A graphical representation of the niche (sensu Hutchinson).

9. Fundamental niche – full range of environmental conditions, biological and physical, under which a species can exist.
Stable population size or growth
Realized niche – that aspect of the hypervolume to which a species is most highly adapted.

10. Blue-grey gnatcatchers
2-dimensional
feeding “niche”
fundamental