Question 5 was the oil spill a density dependent or a

Info icon This preview shows pages 5–7. Sign up to view the full content.

--Question 5. Was the oil spill a density-dependent or a density-independent factor for the sea turtles? Briefly explain.-- The oil spill was a density-independent factor for the sea turtles. The impact of the oil on the turtles’ environment and food source was not a result of the size of their population, but external to it. (Kahn Academy, n.d.) © Copyright 2017 College for America at Southern New Hampshire University. All rights reserved.
Image of page 5

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Consider the Environment, After the Spill Report II. Bottlenose Dolphins Introduction Bottlenose dolphins spend much of their time far out to sea, and thus were less likely to come into direct contact with the oil spill. However, dolphins are mammals and must surface to breathe, which brought many dolphins into direct, and often fatal, contact with oil. (“Common Bottlenose Dolphin,” n.d.; “Oil Spill Impacts on Sea Turtles,” n.d.) Another problem for bottlenose dolphins was food scarcity and contaminated prey. (Pappas, 2012) Dolphins are carnivores, feeding primarily on fish, shrimp, and squid. (“Common Bottlenose Dolphin,” n.d.) The oil from the spill contaminated the dolphins’ food source and caused drops in the numbers of animals they could eat. How have these two risks affected the dolphin population? Bottlenose dolphins are thus facing two different risks from the oil spill: coming into contact with oil through surfacing and food scarcity. Both of these risks will have the effect of limiting the population size. --Question 6. Is the first risk—direct contact with oil—an example of a density-independent or density-dependent regulating factor? Explain.-- The oil spill was a density-independent factor for the dolphins. The oil in their environment that they came in contact with was not the result of the dolphin population, but external to it. (Kahn Academy, n.d.) Food scarcity, the second risk, affected the number of dolphins the Gulf of Mexico can support. This number is called the [--Question 7. Fill in the missing term _ carrying capacity (Kahn Academy, n.d.) --] . If the population of dolphins was well below the [--Question 8. Use the same term as Question 7. _ carrying capacity (Kahn Academy, n.d.) --] before the spill, the population would have been [--Question 9. Select the correct answer increasing (Kahn Academy, n.d.) /
Image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.
  • Fall '18
  • Karen Gana
  • Population Ecology, Kemp's Ridley, Sea turtle, Deepwater Horizon oil spill

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern