Phytoplankton are highly dependent on a diversity of nutrients and influenced by physical and chemical properties in the ocean. This pair of images shows changes in sea surface temperature (top) and phytoplankton productivity (bottom) between 2000 and 2004, after the last strong El Niño event, which occurred between 1997-1998. Biodiversity of the ocean will change as the health of phytoplankton change (Rogelj, et al. Seasonal phytoplankton variability in the southern Patagonian shelf was assessed. Phytoplankton are the base of the Antarctic food web, sustain the wealth and diversity of life for which Antarctica is renowned, and play a critical role in biogeochemical cycles that mediate global climate. Anthropogenic influences on the climate will change these conditions. Phytoplankton produce about 50% of the global biomass and take up an equal amount of CO2 from the atmosphere as all terrestrial ecosystems taken together. There also responsible for about half of the Earth's primary production. Phytoplankton; small cells that use photosynthesis to turn sunlight into food that live near the surface of the ocean. 2009) (Nicholls, et al. Ecology of Shellfish. Here we report on their temporal and spatial variabilities in open waters between 2003 and 2013 using satellite ocean color data. Phytoplankton are very sensitive to mineral availability, including nitrate and iron, and also to light. ... scientists can learn more about how these plants may be contributing to and affected by, climate and environmental change. These changes are mainly influenced by physical-chemical (bottom-up effects) and predation (top-down effects) through the aquatic food web [10,11]. âBecause with climate change you have less mixing of the water column, we thought that the phytoplankton would have more access to light and they would simply expand, but instead we saw these bands of high and low abundance,â Cabré says. Moreover, the dominant species of phytoplankton may also change between different seasons within a year . Some of these effects are global, some remain regional. â¢ Higher phytoplankton biomass was observed during spring. Shellfish are also in danger from the effects of ocean acidification. How plankton change the climate: Plankton affect our planet far more then their-size suggests. â¢ Phytoplankton variability driven by changes in water column structure and nutrient. For example, oysters utilize phytoplankton as a food source. As diverse as these effects can be, changes to phytoplankton communities will occur as well. 1999). Phytoplankton are microscopic plants that live in the ocean. These changes in phytoplankton affect the zooplankton composition promoting shifts . That includes humans. Productivity of phytoplankton depends on a number of environmental factors many of which are altering with climate change. However, the impact of changes in the dynamics of sea ice specifically on phytoplankton spring blooms, a major contributor of the annual primary production in the Arctic Ocean, remains poorly known. The name comes from Greek terms, phyton or âplantâ (âplanktosâ), meaning âwandererâ or âdrifterâ. â¢ Spring diatoms were replaced by haptophytes and dinoflagellates in summer. Because phytoplankton migration would cause marine life to move with it (or die, should organisms fail to adapt quickly enough to the change in their environment), that has the potential to affect fisheries and other economies in the coastal areas.
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