test3 - 1 Mudflats Epifauna live on top of the substrate o...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Mudflats Epifauna: live on top of the substrate o Crustacea: aquatic arthropods. Hard crust-like shell Fiddler crabs: one claw is much bigger than the other Hermit crabs: in saltiest part of bay. Live in snail shells after snail is eaten. Amphipods (marsh and beach fleas): almost invisible o Mollusks: shelled aquatic invertebrates Snails: rough tongue- scrape surface of mudflats to eat algae and bacteria. Lay eggs, hatch larva that floats in water, and then metamorphose into a snail Infauna: live underneath the substrate o Particles hold a lot of water o Anaerobic: smell bad- soil is grayish/black because there’s no oxygen o Clams: live in lower anaerobic part of substrate because they have cyphens that go above soil- bring it food and oxygen Usually biggest animals in mudflats Clues that clam is there: depression in mudflats or squirting water Squirt if they feel threatened o Burrowing anenomes: tentacles stick out of soil to catch food o Worms: ecologically most important. Provide food for shore birds, crabs, and fish. Constantly eating to move so they are constantly defecating- the waste is used by other organisms Ribbon worms: largest of all, 3 feet long. Eat clams by coming up underneath them Segmented bristle worms (polychaetes): called bristle worms because of their hairy appearance. Used as bait. Tube-building worms: build tubes with 2 ends sticking out of the water. Sometimes crabs live in these tubes 1
Image of page 1

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

View Full Document Right Arrow Icon
Plankton Zooplankton: tiny, mostly microscopic animals. Float around. Eat phytoplankton. Migrate vertically within the water column everyday o Crustacea: aquatic arthropods Copepods: found throughout the world’s oceans and account for 80% of zooplankton. Food for every other animal except shellfish. Second law of thermodynamics: only utilize a certain amount of energy from your food. The calories you don’t use are turned to heat. Tertiary consumers: 10 calories. Secondary consumers: 100 calories. Primary consumers: 1,000 calories. Producers: 10,000 calories. Foodchain is only 10% efficient. Eggs naupolus copepodite copepod. Very complex life cycle. Amphipods: tiny crustacea similar to beach fleas. Shrimp: tiny crustacea. Planktonic. o Protozoa: unicellular or multicellular. Ciliates: most common type. Have cilia that bring food into the organism. Microscopic. Dydinium: eats other, smaller cilliates proboscis shoots out and grabs prey Meroplankton: only spend a little of their life as plankton. o Fish larva o Larva forms of crabs o Early life stage of almost every marine organism o Advantages of being planktonic: Can move things to potentially find new habitats o Disadvantages of being planktonic: Eaten easily 2
Image of page 2
Can get flushed out of the bay o Nobody is extremely dependent on one organism in the bay.
Image of page 3

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

View Full Document Right Arrow Icon
Image of page 4
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