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Course Overview and Key Concepts
What is the overarching goal of GEL/ESP 150A?
Student learning and understanding, not just memorizing facts.
What is the grading structure for the course?
Midterm (150 pts), Final (200 pts), Section readings and discussion (100 pts), Bi-weekly
problem sets (80 pts), In-class exercises (20 pts).
What is emphasized in the testing philosophy of the course?
Exams are a learning opportunity, minimizing stress, and focusing on principles rather
than memorization.
What are the two main components of oceanography covered in this course?
Physical oceanography and Chemical oceanography.
What are the major features of ocean circulation that students are expected to
understand?
The physical drivers causing ocean movements and their extent.
What is the significance of quantitative approaches in GEL/ESP 150A?
They allow for accurate predictions and understanding of complex ocean processes.
What historical significance does oceanography have?
Polynesians used observational skills to navigate vast areas of the Pacific Ocean.
Who led the first European effort to sail around the world?
Ferdinand Magellan.
What was Captain James Cook known for?
Circumnavigating New Zealand and discovering how to combat scurvy.
What did Timothy Folger and Benjamin Franklin map in the 1770s?
Currents along the U.S. eastern seaboard.
What expedition is considered the beginning of modern oceanography?
The Challenger Expedition (1872-1876).
What is the 'oceanic river' along the coast?
A current that influences climate and marine life along the coast.
What is the relevance of the west coast of the U.S. in oceanography?
It is one of four regions with extraordinary ocean productivity.
What is the impact of hurricanes on oceanography?
They are generated by ocean conditions and affect climate and human activities.
What is the significance of the NOAA record at Station Aloha?
,It provides insights into ocean changes and their implications.
What is the focus of Unit I in the course?
Physical oceanography, including major surface currents and ocean properties.
What is the focus of Unit II in the course?
Chemical oceanography, including seawater composition and nutrient dynamics.
What are the Redfield ratios?
Ratios that describe the relative proportions of nutrients in oceanic systems.
What is ocean acidification?
The decrease in pH of the ocean due to increased CO2 absorption.
What are the key nutrients discussed in the course?
Phosphorus, nitrogen, and silicon.
What is the importance of studying gas exchange in oceanography?
It helps understand how gases interact between the atmosphere and ocean.
What is emphasized in the course's approach to studying?
Active study methods such as drawing graphs and explaining principles.
What is the procedure for regrading assignments?
Resubmit within one week.
What is the role of extra credit in the course?
Opportunities for insightful questions that demonstrate curiosity.
What is the significance of the 'Geek of the week'?
A recognition for students who ask insightful questions.
What are the four controlling forces in ocean motion?
Gravity, pressure gradient, Coriolis effect, and friction.
What is geostrophic flow?
A type of flow where the pressure gradient force balances the Coriolis effect.
What is the importance of understanding ocean properties with depth?
It helps explain how these properties affect water motion.
Euphotic zone - ANSWER ✅✅✅✅first 200 meters
-where photosynthesis can take place
-suns radiation can be absorbed
Seed Plants - ANSWER ✅✅✅✅-true plants
-not very abundant
-grasses, eelgrass and surfgrass
-mangroves
-like warm, muddy waters
-have a root system
Protists - ANSWER ✅✅✅✅a) large algae(seaweed)
-brown algae(kelp), green (sponge weed), red (rhodophyta)
b) phytoplankton(small algae)
-most producers
-diatoms
-coccolithophores
, -dinoflagellates
Eukaryotes - ANSWER ✅✅✅✅seed plants and protists
Prokaryotes - ANSWER ✅✅✅✅-ancient and very old
-blue-green algae, cyanobacteria
-first photosynthesizers, phytoplankton (chalk)
-red algae is adapted to survive at greater depths (irish moss)
regions of high productivity - ANSWER ✅✅✅✅-polar regions
-coasts
-coral reefs
polar regions - ANSWER ✅✅✅✅-no thermocline
-great amounts of sea life
coasts - ANSWER ✅✅✅✅-upwelling b/c eckman transport(winds moving water)
-nutrients coming from land
coral reefs - ANSWER ✅✅✅✅very productive
regions of low productivity - ANSWER ✅✅✅✅-subtropical gyres
-far from coasts
-water doesn't move up or down
-no upwelling
-very high thermocline
energy flow - ANSWER ✅✅✅✅-Producers
-Consumers
producers - ANSWER ✅✅✅✅-all photosynthetic
-autotrophs-self surviving (produce their own food)
consumers - ANSWER ✅✅✅✅-all animals
-heterotrophs -must consume other organisms (can't stay alive if they don't)
vertebrates - ANSWER ✅✅✅✅fishes, amphibians, reptiles, birds, and mammals
Adaptations to the Marine Environment - ANSWER ✅✅✅✅1. Swimming/buoyancy
2. Avoiding Predators
3. Gas Exchange
4. Adaptations of deep sea fishes