Examine the food web you constructed in Table 45-1. Suppose a severe outbreak of

Question

Examine the food web you constructed in Table 45-1. Suppose a severe outbreak of rabies occurs in the coyote population, resulting in the death of the entire population. Draw a rough graph that describes the impact of the loss of this predator on the rabbit, deer, and raspberry populations over time, and explain your reasoning. You've probably read newspaper articles about the so-called ozone "hole" over Antarctica and other areas of the planet, as well as health-care cautions that destruction of the earth's protective ozone layer will allow harmful ultraviolet (UV) light to reach the surface. Already, a significant increase in skin cancer is being noticed, a disease known to be caused by excessive exposure to UV light (including that produced by tanning lights). Perhaps not so well known is the damage UV light causes to the photosynthetic machinery of green plants and protists. Explain what would happen over time to the populations of organisms of your food web (Table 45-1) if ozone depletion becomes massive.

Explanation / Answer

45.1

Trophic level                                              organisms

decomposer: bacteria and fungi that break down dead organisms and waste

Secondary consumer (Carnivore) : snake and frog

Primary Consumer (Herbivore): Butterfly

Secondary consumer (parasite) : Anteaters and sun bears

Primary consumer ( Herbivore): Rabbit

Primary consumer ( Parasite): Insect Larva

Omnivore: Human, Dog

producer : Green Plant, algae, seaweed, phytoplankton and some bacteria

4. Food habit studies of several small predators indicate the presence of deer in the diet.Thus, decline in Percentages of rabbit, deer affect secondary consumer (carnivores).

5. Ozone affect the decline in population of green plant and are referred as producer thus decline in population of primary consumer may occur, consequently affect secondary consumer population, and ultimately omnivores may slightly get affected.

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