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- What are the various categories and subcategories of fish migration? Give a brief description of eachYou've been out in the field collecting data on the predation of holly leaves. You collect 200 leaves in total of which 100 leaves contain one mine, 20 leaves contain 2 mines and 30 leaves contain 3 mines. After close examination with your hand lens and dissecting microscope you categorize a total of 15 mines with round holes, 9 mines that were torn open and 27 mines with an irregular hole. After some basic analyses you conclude that the predation rates by blue tits and wasps are: A. 3.7% and 6.5% B. 6% and 10% C. 10% and 6% D. 4% and 6.5%How are the populations of the barnacle species balanus and chthalamus affected when Thais density changes?
- How does temperature of sand affect the population of sea turtles? Discuss.Which of the following could explain the seasonal difference in the diet of squirrels? Question 3 options: a) The seasonal change in the relative abundance of blackberries and acorns in their habitat. b) The difference in size between blackberries and acorns. c) The difference in the nutritional composition of blackberries and acorns. d) A and B e) A and CYou visit a medium-sized Caribbean island and identify 4 species of anole lizard. Consider the 3 possible scenarios below. You return to the island a number of years after each of these scenarios. Explain which outcome below (i to iii) you expect for each scenario and briefly justify your prediction. (2-3 sentances) (i) An increase in the number of anole species (ii) A decrease in the number of anole species (iii) No change in the number of anole species Scenario A: Scenario A: A new virus is introduced, which causes all the anoles to become colour blind. Scenario B: An earthquake separates the island into two islands. Scenario C: An invasive herbivorous insect species is introduced to the island, which devastates many plant species and causes the habitat to become much less complex.
- Name and describe the three types of dispersion that can be found in a population b). c).Given two interacting species where K1=3700, K2=1800, α1,2=1.25, and α2,1= 1.48, draw a state space diagram of the competition between these two species (label all axes and intercepts). Which species wins?DOTa species The pesticide DDT was widely used in the 1940s as a method of insect control. In the late 1950s the first DDT-resistant mosquitoes were discovered, and eventually DDT-resistant mosquitoes were found globally. When DDT is used now, the development of DDT resistance in mosquito populations occurs in months rather than years.Which of the following best explains the observations concerning DDT resistance in mosquitoes? * The proportion of DDT-resistant mosquitoes in a population remains constant due to the metabolic costs of DDT utilization DDT is a chemical signal that delays normal reproductive cycles in many mosquito populations. Natural selection favors DDT-resistant mosquitoes that are already present in a population when DDT exposure occurs. Competition for limited resources causes mosquitoes to migrate to geographical areas that have richer supplies of DDT. A population of 1,492 finches is introduced to a rainforest. Over the next year, the finches showa death rate of…
- You visit a medium-sized Caribbean island and identify 4 species of anole lizard. Consider the 3 possible scenarios below. You return to the island a number of years after each of these scenarios. Explain which outcome below (i to iii) you expect for each scenario and briefly justify your prediction. 3-4 sentences for each scenario. (i) An increase in the number of anole species (ii) A decrease in the number of anole species (iii) No change in the number of anole species A) Scenario A: Scenario A: A new virus is introduced, which causes all the anoles to become colour blind. B) Scenario B: An earthquake separates the island into two islands. C) Scenario C: An invasive herbivorous insect species is introduced to the island, which devastates many plant species and causes the habitat to become much less complex.Draw a species accumulation curve for the beetles in Area C3, based on the data shown in Table 2. Ensure that you calculate a standard deviation around each average number of species per sample; plot this on this figure. Make sure you label the axes and that you provide a legend. You will need to reassemble the samples in all possible combinations in order to derive the species area curve.(porvided the table)Dippers (Cinclus cinclus) are small birds that can be found along fast-flowing streams in Europe and Asia. They feed on insect larvae, especially those of caddis flies (Trichoptera), which they catch by sticking their heads under water and turning over stones. Describe the relationship between the abundance of caddis fly larvae and dippers?Why, is caddis fly larva abundance expressed as ‘relative abundance’? using the data in Table 2
