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The long-leaf pine forest ecosystem once extended across 95 million acres of the southeastern US. However only 5 million acres now remain causing major declines in the Gopher tortoise population. Given this, what is expected to happen to overall diversity of species that depend on Gopher Tortoise burrows?
a. increase
b. decrease
c. stay the same
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- Give typing answer with explanation and conclusion A conservationist wants to enhance survival of individual Daphnia populations in the metapopulation along the Scandinavian coast. To be successful, which action would this conservationist most likely carry out in these freshwater rock pools? a. Connecting vulnerable pools by making dispersal corridors to the ocean b.Separating the smallest pools from the largest to prevent immigration c.Removing the shortest-lived Daphnia species from all pools d.Separating pools so the Daphnia cannot mix with one another e.Connecting vulnerable pools by making dispersal corridors between themGive typing answer with explanation and conclusion A group of evolutionary biologists measure population structure in migratory birds and non migratory birds. In one species they estimate Fst as 0.71, and in the other they measure Fst as 0.05. Which species is the migratory species? A. the species with higher population structure B. The species low population structure C. Neither because migration would result in negative values D. You cannot tell because migration is dispersal not gene flow.Give typing answer with explanation and conclusion 1. Which of the following is most likely to increase the carrying capacity of an area for an organism? Choose ALL that apply A. Creating a migration corridor between patches of suitable habitat B. Harvesting the organism to reduce the population C. Eliminating a disease from the area D. Food source increases E. Climate change causing a mutualist to migrate out of the habitat
- Communities are defined by? A). Species whose ranges overlap B). Species that have the same ranges C). physical features of a defined geographic region D). The area occupied by the species with the largest rangeEnvironments with low frequency and intensity of disturbance tend to have ________ species diversity because ______. Group of answer choices A) low; the best competitors exclude any other species B) high; disturbances kill off a large number of individuals C) low; there are fewer late-successional species than early-successional species D) high; more species can colonize over a longer period of time Question: Answer choice selection is either: Burkina Faso or Italy for all three answer choicesWhy are species that live at the tops of mountains at increased risk of extinction due to climate change? a. The colder temperatures at the tops of mountains gradually increase, and the species at the tops of the mountains are displaced by species at lower elevations moving up. b. The species at the tops of the mountains are adapted to moving up and down the mountains and species at lower elevations are displacing them as they move down the mountains. c. The species at the tops of the mountains are adapted to lower oxygen and climate change increases oxygen content in the air. d. Species at the tops of mountains do not have the genetic diversity for adaptation that lower-elevational species do. Therefore species at the tops of the mountains are more likely to go extinct.
- A.) What influence did human density (Panel A), crow density (B), and avian species diversity (D) have on the probability of crow decline in aregion? B.) From a co-evolutionary perspective, why did the likelihood of crow population declines decrease as WNV spread westward after its introduction in 1999 (see Panel C above)?Assume a forest with 2 species of animals (A and B) and are competing for the same resources. Suppose species A dies at 1% per year and species B at 11.57% per year. A total of 6500 animals can survive in the forest. Species B has a higher birth rate and 65% of all new survival replacements go to them and the rest go to species A. What would the steady state number of species A animals be? please report a whole number.a. In our hunt today, what factors besides the interactions between predator and prey, such as weather or surrounding environment, were affecting the population size of each species? Use specific examples.
- The Burmese Python, an invasive species, has been introduced to the Florida Everglades, largely through release by owners who acquired the snakes from exotic pet traders. Though the Everglades are protected, pythons as predators can not be easily controlled. What can be concluded about the effect of the python population on the biodiversity of the Everglades? A. Since the Everglades are protected, python control is limited under laws that protect species in the Everglades. B. Since the python population is growing, it will eventually become a native species and will increase biodiversity. C. Since pythons prey on many species in the Everglades, resources will be more available for surviving species and fewer will be considered endangered. D. Since pythons have no predators, they are responsible for decreasing mammal population and are a greater threat to biodiversity.Which of the following is microevolution? A. The average wing length of a single population of pigeons living in New York City decreased over a period of 150 years b. the growth and wing-size of a single population of Florida Jaybirds originally living in Destin, Florida has steadily declined and decreased over 25 years C. A woman's leg muscles increase in strength and bulk after he starts working out D. A and BIntraspecific competition reduces allelic diversity by Select one: a. relieving predator pressure on the prey population b. allowing K-selected species to have a selective advantage over r-selected species c. creating a competitive advantage to certain alleles d. allowing two different species occupying the same niche to compete for resources