Lecture 21 - Chap 22 Island Biogeography
Chapter 22 Introduction - Island Biogeography
Island Area and Species Richness
MacArthur defined geographic ecology as geographic the search for patterns of plant and animal life that can be PUT
Landscapes (Chap 21)
Landscape Ecology - Chapter 21
Landscape Structure Landscape Processes Habitat Patches and Corridors Landscape Position Origins of Landscape Structure and Change Climate Organisms
Landscape Ecology: Study of landscape st
LIFE IN WATER
The hydrologic cycle exchanges water among reservoirs
The biology of aquatic environments correspondsbroadly to
variations in physical factors such aslight, temperature, and water
movements and tochemical factors such as
1)Photosynthetic autotrophs synthesize organic
molecules using CO2 as a source of carbon and
light as an energy source.
2)Chemosynthetic autotrophs synthesize organic
molecules using CO2 as a carbon source and
Chapter 9- Distribution and Abundance:
Concept 1: Environment limits the geographic distribution of species.
Distribution: Size, shape, and location of area that individuals occupy.
o Abundance: # of individuals in that given area
Chapter 11- Population Growth
In the presence of ABUNDANT RESOURCES populations can grow at geometric or
o A population growing at its maximum rates increases slowly at first and then
growth accelerates for both geometric and e
The process that contribute to population size can be summarized by the equation:
o Nt = # of individuals in a population at some time t
o Nt = # of individuals at some previous time.
Concept 1: Dispersal can increase or decrease local
1. Fitness is defined as the
health of an individual organism.
ability of an organism to adapt to new environmental situations.
quality of offspring produced.
number of genes contributed by an individual to the next generation.
1. Type I survivorship curve indicates
low juvenile mortality and high mortality in older adults.
high juvenile mortality and low mortality in older adults.
low juvenile mortality and low mortality in older adults.
low juvenile m
1. _ is/are defined as a group of potentially breeding organisms within a
species in a given space and time.
2. The creosote bush (Larrea tridentate) can have a random
R0 (the net reproductive rate of females) cant be negative. It represents the average number of
offspring that will be replacing a female in the population, so it can only be zero or higher (unless an
organism is actively murdering other members of the po
1. Darwin is often considered the father of evolutionary thought. Which of the following
terms is/are not part of Darwins analysis?
none of the above
2. Phenotypic ch
Concept 5.1 Macroclimate interacts with the local landscape to produce
microclimatic variation in temperature.
Concept 5.1 Review
Concept 5.2 Most species perform best in a fairly narrow range of
Investigating the Eviden
My Ecological Footprint
After taking the Ecological Footprint Quiz, my results showed that if
everybody on the planet lived my lifestyle, we would need 6.65 Earths. This number
was quite shocking to me as I thought I lived a pretty eco-frie
Chapter 2: Life on Land
Natural History of Ecosystems forms foundation of modern ecology
Terrestrial Biomes (today)
Aquatic Biomes (Friday)
Lecture 19 - Succession
Succession and Stability
Chapter 20 - Succession: Definitions Succession: Gradual change in plant and animal communities in an area following disturbance. Primary succession on newly exposed
Introduction to Succession Pr
Lecture 21 - Global Ecology
Biol 2227 - Principles of Ecology Biol 2227 Geographic Ecology, cont. - Ch. 22 Intro to Global Ecology - Ch 23
Global Positioning, Remote Sensing & GIS
Tools of Modern Large-scale Ecology Tropical Deforestation El Nino - So
1. Dispersal can increase or decrease local
2. Ongoing dispersal can join numerous
subpopulations to form a metapopulation.
3. A survivorship curve summarizes the pattern of
survival in a pop
Evolution by Natural Selection
Natural selection, which changes genotypic and
phenotypic frequencies in populations, can
result in adaptation to the environment.
Depends on heritability of trait.
as a proportion of total phenotypic variation
in a trait
Life in Water
1. The hydrologic cycle exchanges water
2. The biology of aquatic environments
corresponds broadly to variations in
physical factors such as light, temperature,
and water movements and to chem
Principles of Ecology
Natural History and Evolution
v Biomes (Terrestrial, Aquatic)
v Population Genetics and Natural Selection
Adaptations to the Environment
v Temperature, Water, Energy/Nutrients, and Social
1. Concentration gradients influence the
movement of water between an
organism and its environment.
2. Terrestrial plants and animals regulate
their internal water by balancing water
acquisition against water loss.
Chapter 11: Population Growth
Historical Development of Population Ecology
Population ecology relies on
Mathematical models offer a basis for
_and then _
that cant be experimentally
Typical first step is to model
BIO 2227: ECOLOGY
Instructor: Dr. Elizabeth Rielly
An overview of ecology from the level of individual organisms to
populations, communities, ecosystems and the biosphere. It
examines the physical, c
Energy and Nutrient Relations
Organisms can be
Also can be classified
Where do they get their
sources of carbon &
_: Study of interactions
between organisms and the environment
mediated by _.
Includes study of _ (interactions
Social relations often impact individuals
reproductive success and _
Population Genetics and Natural Selection
Darwins Theory of Natural Selection
Organisms beget like organisms
v i.e., offspring are like their parents.
Chance variation between individuals.
v Some variations are heritable.
Lecture 18 - Biogeochem. (Chap 19)
The study of the movement of nutrients through living organisms and the nonliving environment. Pools: locations and forms of nutrients. Nitrogen: Largest pool (atmospheric N2)