EAS 1540 Study Guide - Final Guide: Bottom Trawling, Ekman Layer, Predatory Fish
27 Jun 2016
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Week 15 - required watching (2-3 questions), some required short clips. Highly polar, form crystal lattices when frozen (held together by weak h bonds) Latent heat transported via water vapor (cloud formation) Co2 will persist for 2000 years; methane (ch4) will persist for 12 years. Reflecting wave radiation back towards the earth. Effects of oil spills will persist for greater than 40 year. Ekman layer and trade winds force a warm lens of water, spun around by. Nitrogen runoff pollution will decrease by half. 90% decline in top predator fish abundance. 70% of fish caught as bycatch in bottom trawling. 82% of ocean fisheries are at their maximum capacity or are overfished. Aquaculture accounts for 46% of global fish production. Shark population has declined by 75% in past 15 years. El nino: related to oceanic conditions, slowing/reversal of walker cell, warming of waters off coast of peru. Ecological footprint is 1. 6 earths; by 2030, 2 earths.
