1 / 10

MARS 294 Introduction to Marine Biology

MARS 294 Introduction to Marine Biology. Dr. Ron Kaufmann kaufmann@sandiego.edu rkaufmann@gmail.com Shiley Center 274 (x5904) Office Hrs: Mo 1:30-3:00 Th 2:30-4:30 Fr 12:30-2:00 www.sandiego.edu/~kaufmann/mars294/mars294.html. What is Marine Biology?

owomack
Download Presentation

MARS 294 Introduction to Marine Biology

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. MARS 294Introduction to Marine Biology • Dr. Ron Kaufmann • kaufmann@sandiego.edu • rkaufmann@gmail.com • Shiley Center 274 (x5904) • Office Hrs: Mo 1:30-3:00 Th 2:30-4:30 Fr 12:30-2:00 • www.sandiego.edu/~kaufmann/mars294/mars294.html

  2. What is Marine Biology? • Biology of organisms inhabiting the ocean • Marine biologists study different things at different levels • Molecules  Ecosystems • Related to oceanography, particularly biological oceanography • Coastal vs. Open Ocean • Shallow vs. Deep Water • Perspective: Organismal vs. Environmental • Studying marine organisms requires understanding of • Principles of evolution (esp. natural selection) • Physical/chemical environment and interactions

  3. Ecology • “Ecology” from Greek “Oikos” (house) • Interactions among groups of organisms and between organisms and physical environment • Includes abiotic and biotic components • Physical • Chemical • Biological • Habitat – Location where organisms live • Unique combination of characteristics • Microhabitat

  4. Physical Environment • Ocean: ~71% of earth’s surface area • Largest volume of habitat on earth • Average depth ~3700 m • Marine habitat differs from terrestrial habitat in important ways • Three-dimensional

  5. Physical Environment • Sunlight • Quantity and quality related to physical characteristics of water • Intensity decreases with depth • Maximum penetration ~1000 m • Light penetration affects • Photosynthesis • Vision • Behavior • Spectral attenuation

  6. oceanexplorer.noaa.gov

  7. Physical Environment • Temperature • Varies predictably with latitude, depth • Consistent within a region and time period • Exception: intertidal areas

  8. Fig. 4-10

  9. Physical Environment • Temperature • Varies predictably with latitude, depth • Consistent within a region and time period • Exception: intertidal areas • Affects thermoregulation • Most marine organisms are ectotherms • Some animals are endotherms • Adaptations to retain heat • Affects species distributions • Polar • Cold temperate • Subtropical (warm temperate) • Tropical

More Related