Read the following quote from a writer describing the distance water fishing fleets in the 1970s: “...try to imagine a mobile and completely self-contained timber- cutting machine that could smash through the roughest trails of the forest, cut down trees, mill them, and deliver consumer-ready lumber in half the time of normal logging and milling operations. This was exactly what factory trawlers did -- this was exactly their effect on fish -- in the forests of the deep. It could not long go unnoticed“. (Distant Water, William Warner) Based on this quote, what phenomena was this writer describing?