A group of organisms of the same species in its native situation
constitutes a population.
Likewise, all the populations in a given area constitute a community.
The community and the physical environment function together as an
ecological system, or ecosystem. The place where an
organism would normally live is defined as its habitat.
Control. This is the part of the experiment that does not change. This is necessary to verify or regulate a scientific experiment by conducting a parallel experiment or by comparing with another standard.
For example, if you divide the your quadrat into quarters you use only 3 treatments and leave one of the 4 quarters with no treatment. This is the “Control”. It’s then easier to compare the result of each treatment with the control. Without a control for comparison, it’s really hard to be sure that any changes you see are due to the treatment itself.
An invertebrate is an animal, such as an insect or mollusk, that has no backbone or spinal column.
A quadrat is it is the correct scientific term for what is usually called a plot. It is a measured and marked rectangle, often a square, used in ecology to isolate a sample. It usually consists of 100 squares. In ecology, you usually place the quadrat down in a specific or random place and count what flora, fauna and fungi occurs in each square. In the end, you have a percentage of the types of flora, fauna and fungi present in that particular area.
Fauna is all of the animal life found in a particular region.
Flora is plant or bacterial life found in a particular region.
Fungi decay dead organic matter or grow on other organisms to get nutrients for growth. This is unlike plants which have chlorophyll that helps them make their own food and also makes them green.