Question

some help me in questions 7-9. the table about the forest island (first page) is already answered.

Island Blogeography Theory can be applied to other types of patchy environment. The following data comes from a study of montane forests in the western U.S. Montane forests exist on mountains and can be isolated from one another by lower elevations, creating "forest Islands." Species You need to plot these on the graph on the next page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 Forest Island Mogollon Lasals Chuskas Abajos Sandias Sacramentos Mt. Taylor Manzanos Blacks Zunk San Mateos N. Uncompaghre Capitans Magdalenas S. Kaibab Pinalonos Navajo Guadalupes Chiricahuas Catalinas Prescotts Hulapals Organs Animas Huachucas Santa Ritas N. Rincon Area (km 11134.33 43523 1507.9 958.57 43.85 1349.8 465.3 141.13 872.96 825.63 366.23 3159.1 84.8 106.8 274.27 87.09 0.89 25.71 68.13 29.8 115.8 18.25 8.57 10.58 12.7 11.9 10 0B These are already plotted on the graph on the next page FOREST ISLAVD 13 6 Speciws/der Panon 84.2 2 = 1.07 sledes 6. Using the table above, compare the number of species per area (species/area ratioas follows: 16:41.34 6a. Which Forest Island has the largest area and what is its species/area ratio? LARGEST Alesis MOGO UON; SEDES/Adventuron s 0 .000 stane 6b. Which Forest Island has the smallest area and what is its species/area ratio (examine km2 the "Area" column carefully)? SMALLEST IS NAVAJO AIVD ITS S1643 is 436.83 0.58 Slaues 6. What would be the expected number of species in the largest Forest Island if its species/area ratio were the same as that of the smallest Forest Island? How does this compare to the number of species actually in this forest? 6b species = expected 6b area a area a species expected a species = (6 species 6b area a areal 0.68 slecelsad 2 x 1134 33Kur? Kwar? 6,458 Species

the first page witb the table about Forest Island contain information that helps to answer the question 7.

Answer 1

7. Forest Islands 11-27 from the table on the previous page have been added to the graph below, you need to add points for Forest Islands 1-10 onto this graph using a colored pencil. (Note: Examine this graph carefully! This graph has a logarithmic x-axis while for your data you used a linear X-axis; the trend line shown in this graph is the equivalent of the lines you drew in Section 2, but appears straight because of the logarithmie x-axis) Number of Species 10000 100000 1000 Area km2 8. Using the trend line in the figure above, how many square kilometers of montane forest habitat would be required to support: 8a. 10 species: 1030 Sq Km 8b. 5 species: --80 Sq Km 9. Da. Using the table on the previous page, which Forest Island is the third largest in size what is its area (examine the "Area column carefully), and how many species does it have? Chuskas Forest Island is the third largest in size. Its area is 1507.9 Sq Km and 11 species it has. 9b. What would be the area of a Forest Island that is one-half the size of the one from 9a? Using the trend line in the figure above, how many species should it contain? expected # of species The area would be 754 Sq Km. And the species should be 9.

9c. Using the table on page 12, which Forest Island is closest to the area calculated 9b and how many species does it contain? observed # of species - Blacks Forest Island is closest to the area calculated in 9b and it contains 8 species. 9d. What is the percent difference in observed versus expected? ((9c # species - 9 # species)/9c # species)*100 = [(9.8)/8 ]*100 = 12.5%

Here, the black small square boxes plotted on the graph are the upper 10 points of the table.