One of the challenges faced by organisms as the climate changes is the changes observed in phenology. Describe what a change in phenology would be as a result of climate change by giving me an example of it occurring to some organisms (you can make up the organisms in the example). How would a change in phenology result in a population going extinct (possibly because of a trophic mismatch)?
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One of the challenges faced by organisms as the climate changes is the changes observed in phenology.
Describe what a change in phenology would be as a result of climate change by giving me an example of it occurring to some organisms (you can make up the organisms in the example).
How would a change in phenology result in a population going extinct (possibly because of a trophic mismatch)?
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- NOTE: The image you need to see in order to answer this question is attachedA developer owns the property encompassing the three habitats above. By law, one of the habitats must be left intact to satisfy the zoning laws. The developer works with an environmental engineer to choose which of the habitats should be saved. The environmental engineer suggests that Site C should be saved. Which of the following choices best justifies this decision?Responses A) Site C has greater species richness and species evenness than either Site A or Site B. This will promote the maximum sustainability for future generations of animals. B) Site C is tied with Site A for greatest species richness, but unlike Site A, it has representative species from all 3 of the sites within it. C) Site C not only contains the greatest number of species, it also has the greatest genetic diversity within each species. D) Site C has more unique species in it than either Site A or Site BChanging conditions put intense pressure on organisms-some of which become extinct. For example, of the original 62 species of honeycreeper found in Hawaii only 18 remain. Scientists have the technologies that may allow bringing back organisms that have become extinct. This brings up ethical questions about the cost/benefit of resurrecting extinct species and whether it is the right thing to do. Joseph Bennett, a professor of biology at Carleton University in Ontario, wanted to determine the cost of resurrecting and maintaining an extinct species. Since the up-front cost of resurrecting an extinct species is very difficult to determine, the researchers decided instead to look at the cost of reintroducing and protecting a resurrected organism in the wild. To accomplish this, the researchers considered 70 animals from New Zealand and 29 animals from New South Wales that went extinct within the last 1,000 years. From this list, they chose 11 New Zealand species and five NSW species that…Oaks in California are suffering from a phenomenon called sudden oak death (SOD). This has the potential to convert oak-dominated communities to communities made up of mostly grasses and smaller plants. How would this change the abundances of the tick species described in the article? Make a prediction for each of the three most abundant species, and describe the specific results in this article that justify your prediction. Article Reference: Abiotic and habitat drivers of tick vector abundance, diversity, phenology and human encounter risk in southern California By: Andrew J MacDonald
- Let's assume that you are given some additional data to calculate the effect of one of the invading species, Rudbeckia laciniata, on community species richness and species diversity, but in this case the data are from plots in the native range of Rudbeckia (i.e., North America). The hypothetical data are given in the tables. Plots with Rudbeckia laciniata Species A B C D E F G H I J Abundance (percentage of 20 15 plant cover) Species 15 10 Plots without Rudbeckia laciniata 10 10 5 5 5 5 A B C D E F G H I J Abundance (percentage of 55 5 5 5 5 5 5 5 5 5 plant cover) Calculate the species diversity (using the Shannon index, H) of plots with Rudbeckia. Round the answer to two decimal placesLet's assume that you are given some additional data to calculate the effect of one of the invading species, Rudbeckia laciniata, on community species richness and species diversity, but in this case the data are from plots in the native range of Rudbeckia (i.e., North America). The hypothetical data are given in the tables. Plots with Rudbeckia laciniata Species A B C D E F G H I J Abundance (percentage of 20 15 plant cover) Species 15 10 Plots without Rudbeckia laciniata 10 10 5 5 5 5 A B C D E F G H I J Abundance (percentage of 55 5 5 5 5 5 5 5 5 5 plant cover) Calculate the species richness of plots with Rudbeckia.Many organisms live in environments with extreme conditions (ex. desert), and as a result, they possess anatomical and behavioral adaptations that allow them to survive and maintain homeostasis. Consider fennec foxes living in the desert. Identify three major abiotic conditions, describe how these conditions would impact the organisms' ability to maintain homeostasis (1-2 sentences each), and discuss potential adaptations (morphological and/or behavioral) that would assist in maintaining homeostasis (2-3 sentences each). NOTE.
- After spraying your yard with a weed-killer you notice that you don't see any bees in your yard for the next few days. You know that bees are a keystone species that is critical for a healthy environment, and want to investigate if there is a connection between the weed-killer and the absence of bees. Task: Design an experiment that could test this association by describing each of the following points with a sentence: Describe your hypothesis: Describe your dependent variable: Describe you independent variable: Describe your positive control group: Describe a negative control group:The grassland ecosystem of Montana is being studied for its resilience as the population of its keystone species, the prairie dog, has declined in recent years. Four plots are established, two that still contain populations of prairie dogs and two that no longer have prairie dogs due to outbreaks of plague. A survey is done measuring the total number of producers (number of plants) and the diversity of producers (number of species) of each plot. The data are summarized in the table. Based on this data, which of the following correctly describes how the total number of plant and plant species will change over time in these plots? A - Plots 2 and 3 will show equal decline in plant and plant species due to the lack of a keystone species. B - Plots 1 and 4 will show a decline in plant and plant species due to an increase in the number of prairie dogs consuming the producers. C - Plots 2 and 3 will show a decline in plant and plant species, but plot 3 will show a slower decline due to a…A, B, C, and D are all species that live in arctic climates. Note that species B's temperature ranges in the winter, while species C's temperature ranges in the winter and summer.Given the above information on the species' metabolism and body temperatures, please answer the following questions. Which species is least likely to rely on brown adipose tissue? Question options: Species A Species B Species C Species D between Species A and Species D-- Which species likely has a higher basal metabolic rate adjusted for its size (mass-specific basal metabolic rate). Question options: Species A Species D Between Species A and Species D-- Which species likely has the greater surface area to volume ratio? Question options: Species A Species D
- Interactions between organisms in nature may range from mutualistic to antagonistic. Give one example of mutualistic versus antagonistic interaction and discuss some ecological and evolutionary consequences of these interactionsIn 1929, 13 white-tailed deer were introduced to an isolated island with no natural predators. A survey was conducted once a year to estimate the population of deer on the island. The table shows the deer population over the first five years on the island. The deer fed on many of the native plants found on the island, including the California false indigo, a thornless shrub that is a preferred food source on the island for deer. Based on the data, which of the following graphs correctly predicts the population of California false indigo from 1929 to 1941? Year of Survey Population of Deer 1929 13 1932 29 1935 66 1938 157 1941 398 image 1 because the California false indigo will be able to reproduce faster than it can be consumed by the deer and will be unaffected by the deer population, maintaining its current population image 2 because the increasing number of deer will help spread seeds of the plant and lead to a rise in…The grassland ecosystem of Montana is being studied for its resilience as the population of its keystone species, the prairie dog, has declined in recent years. Four plots are established, two that still contain populations of prairie dogs and two that no longer have prairie dogs due to outbreaks of plague. A survey is done measuring the total number of producers (number of plants) and the diversity of producers (number of species) of each plot. The data are summarized in the table. Plot Total Number of Plants Total Number of Species Presence of Keystone Species 1 142 16 Yes 2 29 6 No 3 258 19 No 4 96 4 Yes Based on this data, which of the following correctly describes how the total number of plant and plant species will change over time in these plots? Plots 2 and 3 will show equal decline in plant and plant species due to the lack of a keystone species. Plots 1 and 4 will show a decline in plant and plant species due to an…