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I have found these papers: http://www.sciencedirect.com/science/article/pii/S0169534713002322 http://www.sciencedirect.com/science/article/pii/S0040580912001360 http://www.ncbi.nlm.nih.gov/pubmed/19416834 http://www.ncbi.nlm.nih.gov/pubmed/21930936 The last two argue that larger groups have better "problem solving" capability, and this is a clear ...


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The shedding of leaves has more to do with the condition of the leaf itself. When leaves become inefficient and unable to produce food and growth regulators, a process of abscission starts. Abscission a step in the planned senescence process within tree leaves. Senescence is a series of events that allow trees to conserve resources, prepare for a dormant ...


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The process of a deciduous plant losing its leaves seasonally is known as abscission. It occurs when a layer of cells known as the abscission zone elongate and weaken, causing the leaf to fall off. It is mediated mainly by the hormones auxin and ethylene. The functional purpose of abscission is to remove leaves when they are no longer producing a net gain ...



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