Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
IB Student Picnic Tuesday, September 1, 5-8 pm Illini Grove Pavilion (corner of Lincoln and Pennsylvania Ave.) Meet Faculty Free Food Free T-shirt Find out what SIB is all about and meet other IB majors!! **Rain Location: 3rd floor Levis** (912 W Illinois)
Illini Grove Pavilion (if rain, 3rd floor Levis)5-8 pm • Food served 5:00 to 7:30 pm • Hamburgers, cheeseburgers, veggie burgers • Ranch beans, potato salad, watermelon • Cookies • Pop and water RSVP to Debbie Lanter, email@example.com or 333-3044
Lecture Assignment: Chapter 4: ClimateVariation in the Physical Environment
Lab Assignments • DUEat beginning of lab Homework 3: Chi-square; read MSLS 40 first Read beforelab Lab 2: Arthropod Abundance + Biomass Lab Emphasis on Scientific Inquiry (pg. 7-8) Student-Driven-Project 1 (pg. 123-124) Print, read, bring article about SDP1
OBJECTIVES • What are large-scale distributions of plant life forms? • What factors distinguish them? • aquatic • terrestrial • What is the proximal cause of their distribution? • How does climate differ among biomes? • Whittaker’s scheme • Walter’s climagrams • Do biomes and plant form and function converge in regions with similar climate?
***Review of major biomes… Tropical rain forest Tropical seasonal (deciduous) forest / savanna Subtropical desert Woodland/shrubland Temperate rain forest Temperate seasonal (deciduous) forest Temperate grassland Boreal forest (taiga) Tundra
Biome: a major type of terrestrial community categorized by its 1) dominant plant form, 2) seasonality of leaves, 3) leaf morphology, 4) latitude.
ICA Concept map*** What 4 variables distinguish biomes? Forbs/grasses Shrubs Trees Deserts - Temp/Trop Shrublands Forests Grasslands - Temp Tundra - Arctic Evergreen Deciduous Conifers Broadleaf Temp. Trop. Temperate Tropical
*** Which biome is found at each indicated letter? A B C E D F G H I
Climate is the major determinant of plantdistributions.Secondary factors are soil, fire, grazing, topography.
Jim Dalling - SIB Soil nutrients + topography influence local distributions of tropical trees.
Whittaker’s scheme: biomes delineated by average temperature and precipitation.
Walter’s climate diagrams allow comparisons among localities. 20 mm monthly rain for each 10ºC in temp = enough water for growth (wherever precip line is above temp line) = enough water for growth growing season
Climatic zones and biomes separated first on basis of1) temperature, 2) precipitation and 3) its seasonality.Boreal + polar climate zones:average annual T=< 5C
Each climate zone has a typical seasonal pattern of temperature and precipitation. Which biome has a dry season? When is it?
***What type of biome would you expect to develop with each climate?Explain. A B
Which biome would occur in each climate? What is the limiting climatic factor(s) for each biome?
C. Where is each of those 3 biomes located in the Western (New World) and Eastern (Old World) hemisphere? Put letters on map.
***Summarize in one sentence the main conclusion about biomes based on these figures and legends.
Unrelated African and South American rainforest mammals show striking convergence. How is this concept related to previous slide about biomes?
ICA - Local-scale determinants of vegetationand its productivity