Biology 102 Notes3 - BIOL 102 Lecture 11 INTRODUCTION TO...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
BIOL 102 Lecture 11: INTRODUCTION TO ECOLOGY The study of ecology is how organisms interact with their environment. There are different factors that are involved such as, biotic (living) and abiotic factors (non-living: sunlight, temperature). o Organismal ecology: Physical and behavioral adaptations that allow individuals to survive in their environment. How does the individual fit in and deal with their environment. o Population ecology: How and why the number of individuals in a population changes over time. What influences how many of the species there are? o Community ecology: Interaction between species and the consequences of those interactions. Who eats who? o Ecosystem ecology: How the nutrients and energy move among organisms and through surrounding soil and water. How it moves through the ecosystem. Where it comes from. Trophic levels : Organisms are organized based on their food source. o Autotrophs: Make their food with inorganic nutrient and an outside energy source. Also called producers. They are critical because it takes energy from abiotic factors and creates energy for everyone else. o Heterotrophs: Get their food from another source. Also called consumers, but some are decomposers, but they absorb their food from dead organic material. Primary consumers: Eat producers (herbivores). Secondary consumers: eat herbivores (carnivores/ omnivores) Tertiary consumers: Eat secondary consumers. Decomposers: absorb their food from dead organic material (fungi or bacteria). Photosynthesis: Producers preform this process to make high-energy organic molecules using low energy inorganic molecules. Chemosynthesis: Producers make food without using sunlight. It allows organisms to produce glucose using heat and high-energy inorganic molecules.
Image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

{[ 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