Niche Breadth of North American Carnivores
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The graph below represents the niche breadth of three species

a. A Bobcat that lives in deciduous, coniferous, or mixed forests. The bobcat prefers eating mammals weighing about 0.7–6 kg

b. A coyote (Canis latrans). It eats just about anything and is found throughout North America including urban areas, and wild habitats and here

c. A Canada lynx (Lynx canadensis) that primarily preys upon snowshoe hare. Canada lynx inhabit the forested, mountainous areas favored by their prey, and are well-adapted to hunting in deep, soft snow

Match the color of the line with the respective species

Blue line = Canada lynx Red line = Bobcat Black line = coyote

The English Poor Law implemented by Queen Elizabeth I in 1601 to provide food to the poor was severely curtailed by the Poor Law Amendment Act of 1834, based on Malthus's reasoning. Infact this also led to calls for forced sterilization of the poor since they had larger-sized families. Which statement below is true about Malthus's thesis in the book Essay on Population?

  • If left unchecked, populations tend to increase geometrically and would soon outstrip their food supply. (correct)
  • Tendency to overproduction would lead to intense competition, heavy mortality, and therefore to an unconscious selection process.
  • Survival of the fittest.
  • Natural selection is a genuinely creative force, not merely a mechanism for the preservation of the species types.
  • Which statement below is true about Clement's thesis on the succession of plant communities?

  • Process of succession increases the amount of competition within the community
  • Process of succession reduces the amount of competition within the community (correct)
  • Every plant association was the unique product of the fluctuating environmental conditions
  • It is not meaningful, in his view, to compare the plant community to an organism
  • Identify the type of niche partitioning a. image that shows a rainforest b. image of birds with different beaks and beside is what they eat c. image of bear, deer, and moose in snowy cold areas

    <h1>Spatial niche partitioning = A Morphological niche partitioning = B Temporal niche partitioning = C</h1> Signup and view all the answers

    Match the type of niche with the image below. a) one big blue circle b) one big circle with 4 other small circles

    <h1>A = Fundamental niche B = Realized niche</h1> <p>=</p> Signup and view all the answers

    The two islands in the Caribbean circled in red (A and B) are of relatively the same size.

    According to the theory of island biogeography on which island do you expect to see higher species richness? Iland (A) is closer to cuba Iland (B) is further from cuba

    <p>A</p> Signup and view all the answers

    According to the theory of island biogeography, the number of species on an island is a function of (a result of) rates of extinction and rates of colonization. Extinction is a function of

    <p>Size of the island</p> Signup and view all the answers

    Based on figure 1 of MacArthur and Wilson's 1967 paper, which island has the least number of species and why?

    <p>Christmas island since it is the smallest island</p> Signup and view all the answers

    In a Longleaf Pine Forest, the top predator is the red wolf. The most abundant species is the bluestem grass that covers the forest floor.

    The Longleaf pine forest ecosystem is dependent on fire to maintain the community. Longleaf pine trees promote fire and also play a critical role in the life cycle of numerous species in the community.

    The dominant species in this community is

    <p>Bluestem grass</p> Signup and view all the answers

    The keystone species in the community described above is

    <p>Longleaf pine trees</p> Signup and view all the answers

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