BIOS 230 Study Guide - Midterm Guide: Temperate Forest, Rain Shadow, Tropical And Subtropical Moist Broadleaf Forests
Document Summary
Lecture 14: scientific study of the relationships between organisms and their environments. Ecosystem: a(cid:374) e(cid:374)(cid:448)i(cid:396)o(cid:374)(cid:373)e(cid:374)t i(cid:374) (cid:449)hi(cid:272)h o(cid:396)ga(cid:374)is(cid:373)s (cid:272)a(cid:396)(cid:396)(cid:455) out thei(cid:396) (cid:862)st(cid:396)uggle fo(cid:396) e(cid:454)iste(cid:374)(cid:272)e(cid:863) Includes an environments physical conditions and other organisms. Adaptation: allow organisms to survive, grow and reproduce, govern the interaction of organisms, ke(cid:455) to spe(cid:272)ies" dist(cid:396)i(cid:271)utio(cid:374) a(cid:374)d a(cid:271)u(cid:374)da(cid:374)(cid:272)e. Observational field study- ecologists examine natural patterns across the landscape: confounding variables may be a problem. Field experiment: test independent variables under controlled conditions in a natural setting. Lab experiment: allow more control over environmental conditions. Citizen science: a new way to do science, collect long-term, large scale datasets. Biomes and the major factors determining their distribution: biotic units and are classified by predominant plant types, tropical forest/ tropical savanna. No seasonality in temp, high precipitation/distinct seasonality in percip. Seasonal difference in temperature, enough percip for trees/seasonality in precip(low-mod: boreal forest/tundra(cool biome) Low mean temp, short growing season, relatively high percip/relatively low precip: chaparral(shrublands)/desert.
