When r is a positive number, the population size is (a) stable (b) increasing (c) decreasing (d) either increasing or decreasing, depending on interference competition (e) either increasing or stable, depending on whether the species is semelparous
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When r is a positive number, the
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- Support for the individualistic model of community structure includes (a) the decline of honeybees because of two species of parasitic mites (b) the identification of fig trees as a keystone species in tropical forests (c) the competitive exclusion of one Paramecium species by another (d) the distribution of trees along a moisture gradient in Wisconsin forests (e) theeffects of the removal of a dominant rodent species from an Arizona desertInplants, “self-thinning” refers to reduction in:a.the biomass of an individual in response to competition.b.the total biomass of a population in response to competition.c.both population density and population biomass in response tocompetition.d.population density in response to competition, as population biomassincreases.e.population density due to grazing by herbivores.The use of the same limiting resource by two species is called (A) parasitism, (B) competition, (C) mutualism, (D) optimal foraging, (E) character displacement.
- If a species of fruit-eating bat eats the same species of fruit in the same patch of forest as a species of fruit-eating bird, but the individuals of the two vertebrate species never touch, taste, feel, hear, or smell each other because the bird feeds during the daytime and the bat feeds at night, which of the following would be the most likely type of species interaction between the two species? O a. Neutralism O b. Exploitation competition O c. Interference competition С. O d. Ammensalism1. An ecologist studying several forest dwelling, insect eating bird species does not find any evidence of interspecific competition. The most likely explanation is (A) lack of a keystone species, (B) resource partitioning, (C) low species richness, (D) pronounced intraspecific competition, (E) coevolution of predator-prey strategies.The population size of a species capable of being supported by the environment is called its ________. a. limit b. carrying capacity c. biotic potential d. logistic growth pattern
- There are 190 grey tree frogs in a swamp. The population is under carrying capacity. If r = -0.093 frogs/year, predict the population size the next year. (round to a whole number) a) 208 b) 93 c) 18 d) 190 e) 172Question 3 Which of the following does not directly affect the intensity of competition? Question 3 options: A) Niche overlap. B) Niche breadth. C) The density of competitors. D) The presence of similar species. Question 4 When disturbance is frequent, competition is often less intense. Question 4 options: A) True B) FalseCompetition between species on the same trophic tier leads to four potential outcomes, 3 are deterministic (zero sum games where one species goes extinct and the other maximizes their growth to balance at the carrying capacity) and one where both competitors survive, but neither does well. A) This dynamic suggests that extirpation (local extinction) of populations is a far more likely outcome than co-existence. How does this affect management policies aimed at increasing biodiversity and proliferation of inter and intra population and interspecies variation. B) Endangered species are defined by low growth rates (r) and low K (reflecting high demand for resources). What are the implications of both these factors on the outcome of competition scenarios, especially the most common scenario of alternate stable states?
- Based on the intermediate disturbance hypothesis,a community’s species diversity is increased by(A) frequent massive disturbance.(B) stable conditions with no disturbance.(C) moderate levels of disturbance.(D) human intervention to eliminate disturbance.Below is the output of several different models that Caterpillar has built to predic next quarter sales. Model A (3): Weather, recent quarter sales, housing starts Model B (3): Interest rates, worldwide GDP, housing starts Model C (3): Weather, worldwide GDP, housing starts Which model is the optimal combination of explanatory variables a) A b) B (c) C Caterpillar predicting Next Quarter Sales d) D R² R² adj 0.56 0.69 0.59 0.58 0.58 0.57Which of the following best predicts the consequences of introducing small Indian mongoose to an island where they did not previously exist?( Invasive species) (Choice A) A The mongoose population will grow rapidly, disrupting the island's community structure by preying on native animals. (Choice B) B The mongoose population size will likely remain smal, and as a result the mongoose population will not be able to outcompete other predator populations for resources. (Choice C) Without any natural diseases, the mongoose population will become established and help increase the species diversity of the island. (Choice D) D Without its typical food sources, the mongoose population will not be able to become established, and the island ecosystem will remain stable. answer explain