Download Ch 52 Introduction to Ecology

Intro to Ecology Video
Backyard Ecology Project – Due November 13th
Crash Course: Ecology
HW: Chapter 52 Notes due Monday
UNIT 3 ECOLOGY
Introduction to Biomes
CHAPTER 52
An Introduction to Ecology and the Biosphere
Warm-Up
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Please read “The Next Frontier” and be ready to
discuss the article.
http://well.blogs.nytimes.com/2015/02/23/aller
gy-risk-may-be-tied-to-how-you-wash-yourdishes/
You Must Know
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The role of abiotic factors in the formation of
biomes.
Features of freshwater and marine biomes.
Major terrestrial biomes and their characteristics.
Please refer to
learning objectives
and essential
knowledge
handout.
Ecology: the scientific study of the interactions
between organisms and the environment

The ecological study of species involves biotic and
abiotic influences.
Ex: Temperature and nutrients
availability can affect terrestrial
plants, crop growth
- This will change the
animals that inhabit that
area
Ex: Oxygen availability,
temperature and salinity can
affect the aquatic zone where
you would find different fish
Biogeography: geographic distribution of
species
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Factors:
 Dispersal – movement away from area of origin
 Behavior – habitat selection
 Biotic factors – other species, food resources,
competition, pollinators, predators
 Abiotic factors – temp, water, oxygen, salinity,
sunlight, rocks & soil
Very sensitive to precipitation and temperature
patterns.
What are some human activities that could
alter the abiotic factors of this ecosystem?
Heirarchy
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Organisms
Population: group of individuals of same species
living in a particular geographic area
Community: group of populations of different
species in an area
Ecosystem: community of organisms + physical
factors
Landscape: mosaic of connected ecosystems
Biosphere: global ecosystem
Climate: long-term prevailing weather conditions in
a particular area
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Climate = temperature + precipitation + sunlight +
wind
Macroclimate vs. microclimate:
 Macro:
work at seasonal, regional or local level
 Micro: small-scale environmental variation (eg. under a
log)
Factors that Affect Climate Patterns:
Sunlight intensity and Seasons
Latitude – Changes angle of sunlight
Tilt of Earth’s Axis
Distance/Position relative to the sun
Seasonal Turnover in Lakes

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As temperature drops, water
temperature cools and sinks
(@4C)
Fall turnover renews oxygen and
nutrients to the bottom layer of
the lake
Factors that Affect Climate Patterns:
Ocean Currents What unique property of water?
Which side of the canyon has more plants? Why?
Black Canyon of the Gunnison River
Factors that Affect Climate Patterns:
Mountains (altitude) affect rainfall
Factors that Affect Climate Patterns:
Air Circulation & Precipitation Patterns
Figure 34.7C
Climate and elevation determine biomes
Figure
34.12
Figure
34.12
Biomes: major types of ecosystems that occupy
very broad geographic regions
Climograph: plot of temperature & precipitation in a
particular region
Tropical Forest
Desert
Savanna
Chaparral
Temperate Grassland
Northern Coniferous Forest
Temperate Broadleaf Forest
Tundra
Disruptions to Terrestrial Biomes
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Natural: Storm, Fire, Flood
Human Activity
Aquatic Biomes
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Water and Oxygen
Lakes
Wetlands
Streams & Rivers
Estuaries
Intertidal Zones
Oceanic Pelagic Zone
(Open Water)
Coral Reefs
Marine Benthic Zone
Closure Questions
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HW: Bring Textbook Tomorrow!!
HW: Ch 53 Vocabulary
1. Give one example of a marine biome and one
example of a freshwater biome.
2. List the 2 most important abiotic factors that
influence where people live.
3. A group of populations of different species in the
area.
4. A community of organisms in an area and the
physical factors with which those organisms interact.
Assignment
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Synthesis Questions Practice Worksheet
Tonight: Complete Ch 53 Vocabulary, Bozeman
Podcasts on http://www.bozemanscience.com/050populations/
BRING YOUR TEXTBOOK TOMORROW!