针毛收获蚁觅食行为对人工固沙区土壤种子库的影响
首发时间:2009-02-04
摘要:采用喜好性指数研究了针毛收获蚁觅食行为对人工固沙区土壤种子库的影响。结果表明,针毛收获蚁对不同植物的种子具有不同的喜好性,对狗尾草和雾冰藜种子有强烈的喜好性,这种选择性收获种子行为将引起生境中的这两类种子的匮乏,从而引起生境中植被结构的改变,但不会对整个土壤种子库造成大的损失。
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Influence of the Foraging Behavior of Messor aciculatus on the Soil Seed Bank in Fixed Sand Land
Abstract:Using the preference index, we studied the influence of the foraging behavior of Messor aciculatus on soil seed bank in fixed sand land. The result showed that the preference of Messor aciculatus for several seed species can lead to the decrease of the quantity of the positively preferred seeds, which can influence the composition of the vegetation in the area. However, the seed quantity stored in ant nests does not seriously affect the soil seed bank.
Keywords: preference index soil seed bank fixed sand land Messor aciculatus
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