Journal Article climate change E1UOL152H7 Iron marine ecosystems 142M471B3J 27YLU75U4W Arctic Atlantification Carbon Dioxide Micronutrients N762921K75 Nitrogen Phosphorus atmospheric nitrogen deposition, harp seal biogeochemical cycles biogeochemistry earth system models elemental use efficiency fisheries management iron marine carbon dioxide removal marine nitrogen fixation microbial thermal fitness micronutrients net primary production ocean ocean iron fertilization ocean net primary production recycling