# The quadrant used is 5m2 she measures 300 individual

• Notes
• 3

This preview shows page 2 - 3 out of 3 pages.

in a field. The quadrant used is 5m2. She measures 300 individual Rosa numerosa plants in 25 quadrants. The total area of the field is 500 m2. (3) Calculate the estimated population of  Rosa numerosa  in this field. Answer: 300/25=12 500/5=100 (12)(100)=1200 estimated population of Rosa numerosa in this field. Problem Four: An ecologist is interested in determining the size of the population of Brassica rapa in a field. The quadrant he uses is 5.5m2. He measures 284 individual Brassica rapa plants in 25 quadrants. The total area of the field is 250 m2. (4) Calculate the estimated population of  Brassica rapa  plants in this field. Answer: 284/25=11.36 250/5.5=45.45 (11.36)(45.45)=516 estimated population of  Brassica rapa  plants in this             field. Discuss the practical application of quadrants and sampling in the field.

Subscribe to view the full document.

QUADRAT 3 A quadrat sample is an effective technique used by biologists to achieve an effective estimate of a population density. It is also an effective technique for studying species diversity throughout a study area. Quadrat sampling is in essence a framed section of study area. All the species being studied within the study area are accounted for and compared with other quadrats. This is great tool for counting slow moving species and plant life. Any difficulties associated with these weeks concept? I believe Team B understands the concept of quadrat sampling and how it assists Biologists with studying the different species that grow in such slow manners. Quadrat sampling is an effective tool, it requires some basic math and provides a more accurate method to gathering data than just guessing, and also it takes less time than having to count every specimen in a certain area. The importance of quadrat sampling is that it allows scientists or biologists to collect standardized data at locations separated by vast distances, and then to compare the sites and determine, for example, whether the abundance or diversity of organisms varies at locations along a north-south gradient.

{[ snackBarMessage ]}

###### "Before using Course Hero my grade was at 78%. By the end of the semester my grade was at 90%. I could not have done it without all the class material I found."
— Christopher R., University of Rhode Island '15, Course Hero Intern

### What students are saying

• As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

Kiran Temple University Fox School of Business ‘17, Course Hero Intern

• I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

Dana University of Pennsylvania ‘17, Course Hero Intern

• The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

Jill Tulane University ‘16, Course Hero Intern