Ecology (Biology 250) Notes on Lecture 12

Open flower buds in dry season to eat pollen consume

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Unformatted text preview: end to destroy stigmas, thus flowers cannot be fertilized.  Open flower buds in dry season to eat pollen  Consume nectar and pollen from mature flowers  Eat seed coating (aril)  Eat seeds  Eat insects from rotting cactus pads  Wet season activity may reduce seeds available to finches during the dry season.  Opuntia helleri main source for cactus finches.  Negatively impacted by El Nino (1983). Intrinsic Rates of Increase 11_21.jpg  On average, small organisms have higher rates of per capita increase and more variable populations than large organisms. Intrinsic Rates of Increase QuickTime™ and a TIFF (Uncompressed) decompressor ar e needed to see this picture. Intrinsic Rates of Increase QuickTime™ and a TIFF (Uncompressed) decompressor ar e needed to see this picture. 3...
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