a) On a single graph, draw the relationship between moose density and the per capita birth and death rates for this population. b) Assume that the population does not experience competition from other species, nor predation. Write out the equation that would best be used to describe the change in population growth from one time interval to another.

The ten-year cycles of the populations of the snowshoe hare and Canada lynx were first recorded from fur returns of Hudson's Bay Company traders in the late 1800s. The cycles revolve around the lynx's preference for hares over other animals as a food source. This predator-prey relationship is again being studied by the Northwest Territories Department of Renewable Resources, in an area known as the Mackenzie Bison Sanctuary. 1991 1992 N = 19 100 kam 100 km N = 3 100 km 100 km Legend:a=I Lynx 1a. Calculate the density of the lynx population in 1991 and 1992. Show your work. 1b. Calculate the per capita growth rate for the lynx population from 1991 to 1992. Show your work.

To create a survivorship curve for the Andean condor: Graph Title: Survivorship Curve for Andean Condor Y-axis: Labeled "Survivorship" with indicators for "Low," "Medium," and "High" levels, ranging from 0 to 100% of the total initial cohort size. X-axis: Labeled "Life Span" with stages "Young" (0-5 years), "Middle-aged" (6-37 years), and "Old" (38-75 years). Key Features of the Curve:   Begins high, reflecting near-total survival from birth to maturity due to low mortality and protected upbringing. remains flat and high through the middle age, indicating sustained low mortality. shows a steep decline in old age, representing increased mortality as individuals reach the latter part of their lifespan.

Use the following simple predator-prey relationships to answer the questions about the system below (assume no other interactions exist in this system). Mice eat grain grown by a farmer before it can be harvested. The mice are consumed by several species of snakes, which themselves are consumed by hawks. A. If the population of snakes was suddenly wiped out by disease, explain the short-term effects on the grain, mice, and hawk populations, and why these effects would be observed. B. If the population of snakes were suddenly wiped out by disease, explain the long-term effects on the grain, mice, and hawk populations, and why these effects would be observed. C. Local farmers would like to use a biological, as opposed to a chemical, means to protect their crop. What would be the most effective way for farmers in this area to protect their grain crop naturally? Why? Edit View Insert Format Tools Table 12pt ✓ Paragraph BIUA V 2 ✓ T² v :

Two winters ago, a species of bird called the pine siskin began appearing in droves at backyard bird feeders in my hometown. We would occasionally spot a few each winter, but numbers were unusually high that year. The next winter, it seemed as if all of the "extra" pine siskins had disappeared. Numbers fell back to the levels that we were used to seeing. Use the concept of carrying capacity to explain the irruption of pine siskins described in the scenario. Provide your answer in a standard paragraph using complete sentences

A study determined that a population of elephants had a density of 0.11 elephants/km 2. If this population roamed over an area of 230 km squared , then the estimated size of the population would be?

A population of 30 endangered palm frogs has been introduced into a new region, that has unlimited resources. These frogs breed continuously. You have been asked to calculate what the population size is likely to be in 20 years time, assuming an intrinsic rate of increase of 0.041. Report your result as an integer

If the population of 150 squirrels at UofL has 15 births this year, what is the per capita birth rate?  - 0.1 squirrels/yr/squirrel If the population of 150 squirrels at UofL has 10 deaths this year, what is per capita death rate? - 0.067 squirrels/yr/squirrel Calculate the intrinsic rate of increase for this squirrel population, using your answers to the questions above. - 0.03 squirrels/yr/squirrel Between having plenty of shelter in the trees and scavenging through the campus garbage, UofL squirrels have seemingly unlimited resources. Using the information you've calculated so far, determine the growth increment for the coming year for the UofL squirrel population.  - 4.5 squirrels/yr Let's say that, after you calculated your predictions for unlimited growth of the UofL squirrel populations in the questions above, a bad storm comes through campus and wipes out half the trees! Now, the growth of the population of squirrels becomes limited. There are still 150 squirrels, but the…

The endangered Amargosa River pupfish (Cyprinodon nevadensis amargosae) lives in Death Valley, where different populations of the species live in total isolation from one another in tiny permanent pools and short stream segments (Lema and Nevitt 2004). Although these populations have been separated from one another for only 400 to 4000 years, males in some places aggressively defend territories and court females drawn to them, while males in other populations are not aggressive toward one another and do not defend territories. How could these changes occur so rapidly? How might you establish experimentally that the hormone arginine vasotocin (AVT) decreases aggressive behavior in pupfish? If the hormone does lower aggression in this species, what predictions could you make about AVT or about AVT receptor protein differences between territorial and nonterritorial males of the same species? please don't write from any online source

True or False? a) In Lotka-Volterra competition models, coexistence CANNOT occur if interspecific competition is stronger than intraspecific competition. b)There are three types of survivorship curves that describe mortality rates at different age classes. A type I survivorship curve describes a population with low juvenile mortality, while a type III survivorship curve describes a population with high juvenile mortality.