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transectLAB - Biology 3A Ecology Point-Quarter Sampling...

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Biology 3A: Ecology Point-Quarter Sampling Layla Fijany Kathleen Michael McLaughlin Lorena Cordova Sahar Meshkat Table 4. Calculations for Point-Quarter Sampling Date: 4/27/2011 Habitat: Costal Sage Scrub Total Points (k): 10 4k: 40 Total point to plant distances: 99.15 Total density: 0.163 Species, i n i Relative Density RD i Absolute Density D i No. of points with species j i Frequency F i Relative Frequency RF i Total Area Covered A i Coverage C i Relative Coverage RC i Importance Value IV i Sage 14 0.35 0.0571 9 .9 .375 20.939 .0854 0.1925 0.9175 Mustard 17 0.425 0.0693 8 .8 .333 6.507 .0266 0.060 0.818 Russian thistle 2 0.05 0.0815 1 .1 .04167 1.633 .0665 0.15 0.2416 Coyote bush 1 0.025 0.00408 1 .1 .04167 .385 .001571 0.0035 0.0702 Buckwheat 4 0.1 0.0163 3 .3 0.125 60.641 .2471 0.557 .782 Mule fat 1 0.025 0.00408 1 .1 .04167 1.766 .00721 .0163 .2297 Cactus 1 0.025 0.00408 1 .1 .04167 2.268 .00925 .0209 .08757 Totals 4k = 40 1.00 XXX XXX ∑F= 2.4 1.00 XXX ∑C=0.4436 1.00 XXX
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Table 1. Raw Data Point No. Quadrant No Species Diameter (m) Area Covered (m^2) Point to Plant (m) 1 1 sage 1.9 2.83385 2.5 2 mustard 0.4 0.1256 1.1 3 mustard 0.4 0.1256 1.7 4 sage 1.2 1.1304 3.6 2 1 mustard 0.4 0.1256 2.1 2 mustard 0.5 0.19625 2.4 3 sage 0.4 0.1256 2.6 4 mustard 0.5 0.19625 2.05 3 1 sage 3.5 9.61625 3 2 mustard 0.6 0.2826 0.4 3 sage 0.4 0.1256 4.7 4 mustard 0.2 0.0314 0.2 4 1 mustard 1.3 1.32665 3.6 2 russian thistle 1.2 1.1304 3.3 3 russian thistle 0.8 0.5024 1.8 4 mustard 1 0.785 6.5 5 1 coyote bush 0.7 0.38465 2 2 mustard 0.6 0.2826 2.1 3 sage 1.5 1.76625 1.9 4 buckwheat
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