University:
York University
Course:
SC/BIOL 2021 | Cell Biology
Academic year:

2019
Views:

394

Pages:

3
Author:

Nick T.

No plants found on Cont. Slope. Hadal Zone = where the trenches are. Where are the plants? ≤ 200m Photic, Dysphotic, Aphotic Intertidal Zone = zone on jetties between high and low tide. Above is the Spray zone from the ocean. Divided into Eulittoral and Midlittoral. Anhydrous methane 1/25/19 How do we reduce greenhouse gasses "Cap and trade:" - Taxed for how much carbon you create - You can sell your "credits" Spraying iron and phosphorus to promote photosynthesis - Turned the ocean green - But govt banned it... why? - we could have another ice age - does it acidify the ocean = deadly - we just don't have that data!!! Coastlines will have different salinity than other parts Aug. 33-38 pp+ Red Sea = 40 ppt = high evaporation Many Ocean plants can only take a small variation in salinity. However! Estuary plants have a very high tolerance for salinity = Euryhaline Your pruney fingers from salt water is a smaller circumference. Effluent = "Caca water" but processed by bacteria What happens to that bacteria? Bacteria dies in 10 minutes, because they're used to freshwater. Flooding is the only event that causes increased amount of bacteria. Drought = hypersaline Stichohaline = Small tolerance for salinity Optimal I. Abiotic Factors: non-living = oxygen B. Can control what grows where Abiotic Factors affect the plants like wind or tide levels. Plants adapt to high winds with stripping sand by developing fleshy skin like succulents and having a lot of lignin. II. Geological Factors A. Ocean mixing = maintains salinity B. Plate tectonics = Atlantic is getting bigger, and the Pacific is getting smaller. Oceans are changing. Pacific's hot spots create islands. Volcanoes Coral reef Atolls Island C. Currents Major tides caused by the Coriolis effect (24,2L) 4 Tides (IH,IL) 2 tides Neap Spring tides This is why that California beach water is so cold! Because it's coming from the Arctic! → Deep Cold Water Currents Ice freezes, but it's freshwater, because the salt sinks we need those ice caps, if that ice melts, the influx of freshwater could devastate the plants that live there Since those plants have a smaller salinity tolerance D. Light < 50% = infrared red, other 50% is visible light A lot of light is reflected from water Light is also absorbed by water D. Temperature Eurythermal = can tolerate larger range of temperatures Some plants have an enzyme that act like an anti-freeze Can we harness that power for space travel? zooxanthelli + Farmer coral have symbiotic relationship "Water is a heat sink" because of its specific heat 1 Calorie is required to raise 1 g of water 1°C In RGV, 1984 = day was 90°, overnight was 19°