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Module 4: Ecosystem Dynamics :leaves: (Population Dynamics IQ: What…
Module 4:
Ecosystem Dynamics :leaves:
Population Dynamics
IQ: What effect can one species
have on the other species in a community?
biotic factors
impacts on and
consequences
for populations
competition (allelopathy)
symbiosis
(mutualism, commensalism, parasitism)
predation
disease
abiotic factors
impacts
ecological niches
measuring populations/
sampling techniques
abundance
capture-mark-release-recapture
drones/UAV
quadrat
distribution
transect
recent
extinction
event
Australian megafauna
climate change
human arrival
Past Ecosystems
IQ: How do selection pressures
within an ecosystem influence
evolutionary change?
changes in
biotic factors
#
reasons/hypotheses
abiotic factors
#
reasons/hypotheses
palaeontological &
geological evidence
used to analyse
Aboriginal rock painting
banded iron formations
ice core drilling
stratigraphy
fossils
stomatolitic
micro
palaeosols
molecular biomarkers
tree rings
technologies
radiometric dating
geochronology
fission track dating
SHRIMP
gas analysis
evolution of
Australian species
sclerophyll plants
small mammals
Future Ecosystems
IQ: How can human activity
impact on an ecosystem?
restoration practices
mining sites
environmental impact statement (EIS)
agricultural land
degradation
biological controls
land clearing
salinisation
introduced species
eutrophication
soil erosion
pesticide residues
management of
future ecosystems
past environments can inform
impacts on
biodiversity
introduced species
land clearing
growth models
Malthusian or exponential
growth model
logistic
geometric
equilibrium
human-induced
selection pressures
selective breeding
climate change