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

2019
Views:

359

Pages:

2
Author:

Nick T.

Comparing terrestrial and Aquatic P.P. 1/28/19 → Estuaries < Open Ocean → Is the ocean heterotrophic or Autotrophic. Photosynthesis is only occurring in the epipelagic zone. -Rest of the ocean is dark but not dead. - Organic matter Sinks. * Ocean is net heterotrophic •More Oxygen consumed than produced. Measuring Primary Production: e Light and dark bottle experiment But this is relative to the amount of gal ae there. Figuring out biomass will help calculate production rate. Lo Or understand how much chlorophull is present. A Large Scale measuring PP. •Remote Sensing via planes and satellites. -Spectroradiometer. reflectance data. • Autamic measuring devices: D.O., Salinitu, temp. Microbial Ecology: Production and Decomposition (ch. 3). * Bacteria = important Found almost everywhere Decompose organic. matter Can "sit there" For 100's of years. . Metabolically diverse Features that eukaryotes do not have. Wio bacteria, the forests would die w/ dead animals/stuff. →Before us, bacteria thrived because they didn't need Oz. Microbes are important. = drive food webs. Small SA/V ratio. = easier to acquive energy. Growth Yield = Growth / Growth + Resp + Excretion (Trophic) applies same way to a trophic levels. 4= ppen+1/ppen. Whales planktovores. when they die, they provide detritus material. Bacteria out weigh whales, so they're important! Terrestrial Tropnic Pyramid w/Biomass Marine Trophic Pyramid. w/ biomass * Trophic efficiency. Ranges from 51.-20% Lo Second law of thermodynamics. Decomposition Organic Matter→ Energy + Nutrients. Mineralization = (C, N, P). Fungi are the decomposers of plant material. Plant Decomposition: 1. Leaching loss 2. Decomposer colonization. and uptake. 3. Carbon quality declines leading to decomposer decline. → Carbon and Nitrogen is needed.