Surface Photosynthesis rate Photosynthesis inhibited here because of too much light Net productivity -Depth of greatest productivity Lower light levels restrict photosynthesis down here 100 Gross productivity 50 200- - Compensation depth (respiration equals photosynthesis) Bottom of euphotic zone 300 - 100 -Respiration rate Охудen minimum zone Figure 14.13 Compensation depth and its relationship to other aspects of productivity. Note the position of the bottom of the euphotic zone. Depth BujuJen abe buan a

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