In this first module, we look at the various zones of the ocean, both in terms which zones are the most bright and which are the most productive. We first: (i) look at the zones of the ocean based on how much light can access them, highlighting the photic zone as a crucial area where producers can survive and photosynthesise; we reference (ii) John Ryther as a pioneer in our understanding of the zones of productivity in the ocean; following this (iii) we focus on the upwelling as a key zone for productivity, as well as the Peruvian Anchovetta as an example of an upwelling zone; we then (iv) finish up by discussing John Rythers predictions on fishery limits.

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This lecture is part of a larger course exploring the world of marine biogeography and tackles the question, why is the sea not green?: massolit.io/courses/marine-biogeography?source=yt

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MASSOLIT works with university academics to produce short video lectures in the arts, sciences, humanities and social sciences. It is available to schools and colleges on an institutional license as well as via private subscription: massolit.io/?source=yt