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How does the Vaccinium oxycoccus acquire its nutrients?
Vaccinium oxycoccus forms an extensive root system that sits just a few centimeters below the layer of Sphagnum that share it's habitat. The roots end in very find root tips that are very similar to the types found in desert plants. (Jaquemart p. 387)
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Some nutrients, especially nitrogen, are acquired through a mutualistic relationship between Vaccinium oxycoccus and the fungus Hymenoscyphus ericae. The low amount of nutrients in peat bogs would likely lead to the death of Vaccinium oxycoccus if it weren't for the relationship it as with Hymenoscyphus ericae. (Jaquemart p. 387)
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Vaccinium oxycoccus is located in peat bogs, a habitat that is notorious for its low nutrient concentrations. There is little circulation of nutrients in peat bogs and what nutrients are available are constantly being used to create peat. Vaccinium oxycoccus undergoes photosynthesis using leaves that extend from vertical shoots that protrude out of the layer of Sphagnum in a peat bog. (Jaquemart p. 389-390)

The application of fertilizers is shown to increase the production of shoots in Vaccinium oxyccus. This in turn leads to the creation of more leaves and a greater ability to undergo photosynthesis. (Jaquemart p. 389)

Vaccinium oxycoccus is also highly susceptible to metal toxins like manganese and iron. It has been shown that they relationship that Vaccinium oxycoccus shares with Hymenoscyphus ericae also helps to prevent metal toxins from killing Vaccinium oxycoccus. (Jaquemart p. 389)

Vaccinium oxycoccus is also highly susceptible to cold weather conditions and low amounts of water. Luckily the flowering part of Vaccinium oxycoccus, which is what later produces the fruit, is able to become dormant during the winter months. (Jaquemart p. 387)
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Vaccinium oxycoccus is a vascular seed plant that is able to move nutrients through out itself using xylem and phloem. It's leaves contain stomata which allow for the exchange of oxygen and carbon dioxide. Vaccinium oxycoccus is able to store it's food as starch. (Jaquemart p. 387)

The shallow root system of the Vaccinium oxycoccus forces it to rely on the deeper root system of the Sphagnum mosses to bring water closer to the surface for Vaccinium oxycoccus to take advantage of. (Jaquemart p. 387)