Study of Population Density on a Suburban Lawn - Explore Biology
Study of Population Density on a Suburban Lawn - Explore Biology
Study of Population Density on a Suburban Lawn - Explore Biology
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Name _____________________________<br />
Regents <strong>Biology</strong><br />
5. Count the number <str<strong>on</strong>g>of</str<strong>on</strong>g> each plant species in each rectangle <str<strong>on</strong>g>of</str<strong>on</strong>g> your quadrat and record the<br />
populati<strong>on</strong> size in Table 1 <strong>on</strong> the following page. You can first use “tic” marks in the table<br />
and then write in a number as a final count for each rectangle when you are d<strong>on</strong>e.<br />
6. Using the symbols shown al<strong>on</strong>gside the plant diagrams (Figure 2), also plot the approximate<br />
locati<strong>on</strong> <str<strong>on</strong>g>of</str<strong>on</strong>g> the plants <strong>on</strong> your quadrat drawing below (Figure 1).<br />
7. Total the number <str<strong>on</strong>g>of</str<strong>on</strong>g> each plant species in Table 1. These totals will be shared with the class,<br />
<strong>on</strong>ce we return to the classroom.<br />
8. Copy the class data in Table 2. Total each column to get the class totals for the lawn. Now<br />
we want to calculate the average populati<strong>on</strong> density for the lawn. This will be expressed in<br />
plants/meter 2 .<br />
Figure 1. YOUR QUADRAT<br />
<str<strong>on</strong>g>Populati<strong>on</strong></str<strong>on</strong>g> density <str<strong>on</strong>g>of</str<strong>on</strong>g> four weed species in a suburban lawn.<br />
string<br />
2 <str<strong>on</strong>g>of</str<strong>on</strong>g> 6<br />
Adapted by Kim B. Foglia • www.<strong>Explore</strong><strong>Biology</strong>.com • ©2008