BIOL 1902 Lecture Notes - Eastern Gray Squirrel, Photosynthesis, Mycorrhiza

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20 Jul 2012
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Northern shrikes also store extra food when available. Larder: shrikes kill with their bill. Other animals store food on a regular basis. Beavers create a central cache called a food pile. Gray squirrels create hundreds of solitary caches (acorns: fat and protein, scatter hoard. Gray jays do not migrate: scatter hoard thousands of items, they store food in summer and all fall. Adaptations for storing food: enlarged salivary glands (a lot of spit, sticky saliva, amazing memory. Hippocampus deals with spatial memory: nesting early. Red squirrels create larger stashes called middens. Recall chipmunks enter dormancy: employ a mixed strategy, store caches of food underground. Expandable cheeks allow chipmunks to load up. Are plants any different than animals: no they also have nutritional demands, yes most make their own food. Photosynthesis animal is autotrophic: for photosynthesis, plants need basic ingredients: Nitrogen, phosphorus, calcium are nutrients needed by plants. Some habitats are nutrient poor: bogs, heath (ericaceous) plants are common.

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