(a) (i) What is meant in ecology by a quantitative survey? A quantitative survey in ecology refers to a method of collecting measurable data regarding living organisms in a specified area - Leaving Cert Biology - Question 9 - 2007

To carry out the survey, I placed the quadrat frame randomly at predetermined locations within the study area. By systematically laying down the frame, I counted the number of individuals of each species within the quadrat to gather data on plant density and diversity.

Using multiple quadrats ensures that the data collected is representative of the larger area. It accounts for spatial variability, increases the reliability of the results, and allows for better statistical analysis, reducing the probability of bias.

I identified the plants by comparing them with a field guide or using identification keys based on their morphological characteristics such as leaf shape, color, and flower structure. Additionally, I consulted online resources for uncertain species.

I presented my results using tables and charts that summarized the density and diversity of the plant species observed in each quadrat. This included comparing the species richness across different quadrats and visual representations of the data.

No, the quadrat method is not always suitable for animal populations.

Animals often move quickly or are too large to be effectively sampled using a fixed-area quadrat. For animals, alternative methods such as transects or mark-recapture techniques may be more effective for estimating population sizes.