18 Questions
What is the ecological definition provided in the text?
A group of organisms that inhabit a specific area and use the same resources
Which term in the text refers to the distribution of living organisms into specific zones?
Zonation
What does stratification in ecology primarily refer to?
The vertical layering of habitats based on plant growth
In ecology, what is the main purpose of conducting sampling in ecosystems?
To predict future changes and prevent human impacts on ecosystems
Which sampling method involves the use of measured squares to analyze biodiversity in an ecosystem?
Quadrats
What does a transect sampling method involve?
Observing and recording species diversity along a straight line
What is the main purpose of using the Lincoln Index in ecology?
To estimate the population size of a species based on initial and subsequent captures
In the context of ecological studies, what does 'M' represent in the Lincoln Index formula N = M × n/m?
Number of individuals caught/marked/released initially
Why is it important to conduct multiple independent and repeated trials when using the Lincoln Index?
To increase the precision of population estimates
What method is commonly used to study zonation and stratification in ecosystems?
Transects
Which factor would most likely affect the accuracy of population estimates using the Lincoln Index?
Marking individuals in a harmful way
How does exponential growth relate to changes in population numbers over time?
It creates a 'J' shape on a graph indicating increasing population numbers over time
What is the purpose of stratified sampling according to QCAA's guidelines?
Estimating population, density, and distribution
Which factor is crucial in selecting a site for ecological surveying according to QCAA?
Representativeness of the community as a whole
What role does the choice of ecological surveying technique play in the stratified sampling process?
Determining the accuracy of the population estimate
How can bias be minimized when using quadrats in ecological sampling?
Excluding organisms touching the outside of the quadrat
What is a key step in presenting and analyzing data collected through stratified sampling?
Calculating standard deviation and standard error
In stratified sampling process, what is essential to ensure site representativeness and future studies according to QCAA?
Accurately marking out and recording site locations
Test your knowledge on key terms related to ecological classification processes, such as zonation and stratification. Learn about the distribution of organisms in specific zones and the vertical layering of habitats.
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