Where is Lake Victoria; what is the issue that your book/PP examined relating to Lake Victoria; why is there
‘ecological imbalance’ there? (as in many, many places)
In Africa, the introduction of Nile Perch into the lake
which ate all the Cichlids, also the introduction of Hyacinth.
What is ‘ecology’?
What does it mean?
What are the goals of an ecologist?
Ecology is the study of the interactions
among organisms and between organisms and their abiotic environment. “The study of ones house”. Ecologists are
most interested in the levels of biological organization including or above the level of the individual organism, the
ultimate goal of ecosystem ecologists is to understand how ecosystems function.
What are the levels of ‘ecological organization’?
Which is largest, smallest, the rest, and how is each described?
Orgamism(one animal, the smallest), population (individuals of the same specie), community (populations are
organized into communities), ecosystem (includes all the biotic interactions of a community), landscape (a region
that includes several interacting ecosystems), biosphere (the layer of earth containing all living organisms, the
What are the levels in ecosystem composition (producers, consumers, decomposers), and what are their roles in the ecosystem?
manufacture large organic molecules from simple inorganic substances, generally carbon dioxide and water usually using the energy
of sunlight. (Plants).
they consume other organisms as a source of food energy and bodybuilding materials. (lion,spiders,deer,
organisms that break down dead organisms and waste products. (Bacteria,fungi).
How do the ‘food chain’ and the ‘food web’ differ?
Which is more realistic?
a chain in which food passes from one organism to the
next in a sequence.
a complex interconnected food chains in an ecosystem, is a more realistic model of flow of energy and materials
Ecological niches – how do explain them?
What is ‘resource partitioning’, ‘overlap’, and ‘competition’?
Can you provide examples from your
the totality of an organism’s adaptations, its use of resources, and the lifestyle to which it is fitted.
is the reduction in competition for environmental resources such as food among coexisting species as a result of each species’ niche differing from
the others in one or more ways. (Warblers)
when you overlap/share.
The interaction among organisms that vie for the
same resources in an ecosystem (such as food or living space). (Plants compete for light).