Flexibility and Constraints of Lepilemur Ecology
Flexibility and Constraints of Lepilemur Ecology
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Lepilemur生态学的灵活性和约束
DOI：
10.1007/978-1-4899-2412-4_11
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发表时间：
1993
期刊：
影响因子：
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通讯作者：
J. Ganzhorn
中科院分区：
文献类型：
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作者：
J. Ganzhorn
UsingLepilemur mustelinus作为狐猴食叶性公会的一个例子，我解决的问题是如何潜在的种间竞争与阿瓦希laniger和栖息地适宜性下降影响其叶选择和栖息地利用，分别。在马达加斯加的四个不同的森林中，测量了Lepilemur吃的叶子的质量。叶片品质以蛋白质与纤维含量之比表示。在Avahi缺席Lepilemurate高品质的叶子的森林。在Avahi出现的地方，Lepilemurfed吃的是劣质的叶子，这些叶子比Avahi吃的东西要差。不明地点的影响没有影响叶选择ofLepilemur，一旦Avahi的效果已占。这种模式可以被认为是行为特征置换。微生境所使用的Lepilemur mustelinus ruficaudatus的特点是密集的树木，解释为运动的先决条件。在一定程度上，Lepilemurtolerant在伐木后树木变薄，并使用树木之间距离更大的微栖息地。但是，当更密集的伐木形式进一步增加平均树距时，Lepilemur使用的微生境中的树距保持不变。这表明了上限，由于精力充沛的限制，树木之间的距离所需的旅行由Lepilemur。食物树的分布随着群体大小的增加而增加，从孤独的Lepilemur到成对生活的Avahi到群体生活的Propithecus verreauxi。所有这三个结果都是由最优化理论的确定性模型预测的。这表明，叶片质量和栖息地结构的限制资源forLepilemurand，种间竞争高品质的叶子是一个积极的力量在食叶的马达加斯加狐猴公会。
UsingLepilemur mustelinusas an example of the folivorous guild of lemurs, I address the questions of how potential interspecific competition withAvahi lanigerand declining habitat suitability affect its leaf selection and habitat utilization, respectively. The quality of leaves eaten byLepilemurhas been measured in four different forests of Madagascar. Leaf quality was expressed as the ratio of protein to fiber content. In forests whereAvahiwas absentLepilemurate high quality leaves. WhereAvahiwas presentLepilemurfed on low quality leaves which were inferior to the items eaten byAvahi. Unidentified site effects had no effect on leaf choice ofLepilemur, once the effect ofAvahihad been accounted for. This pattern can be considered as behavioral character displacement. Microhabitats used byLepilemur mustelinus ruficaudatusare characterized by dense stands of trees, interpreted as a prerequisite for locomotion. Up to a certain pointLepilemurtolerates thinning of trees in the wake of logging and uses microhabitats with greater distances between trees. But tree distances in microhabitats used byLepilemurremain constant when average tree distances are further increased by more intensive forms of logging. This indicates an upper limit due to energetic constraints for distances between trees needed for travel byLepilemur. Clumping in the distribution of food trees increases with increasing group size from the solitaryLepilemurto the pair-livingAvahito the group-livingPropithecus verreauxi. All three results are predicted by deterministic models of optimization theory. This suggests that leaf quality and habitat structure are limiting resources forLepilemurand that interspecific competition over high quality leaves is an active force in the folivorous guild of Malagasy lemurs.
生物物理学.J.45。
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