Phenology and phylogeny of animal-dispersed plants in a Dry Chaco forest (Argentina)
Phenology and phylogeny of animal-dispersed plants in a Dry Chaco forest (Argentina)
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干燥查科森林中动物分散植物的物候学和系统发育（阿根廷）
DOI：
10.1006/jare.2002.0976
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发表时间：
2002
影响因子：
2.7
通讯作者：
S. Páez
中科院分区：
文献类型：
--
作者：
D. Marco;S. Páez
热带干旱林的物候模式与环境因素（主要是降雨和日照）以及树木作为大型多年生植物所固有的植物内源节律有关。在这些环境（“外部假设”）和内在（“内生假设”）解释的叠加下，可能存在有助于形状物候学的系统发育限制。针对上述假设，采用两种方法对阿根廷查科干林肉质果实乔灌木物种物候进行了研究，以物种平均值为独立数据点，剔除系统发育效应。这些假设在很大程度上是相互补充的。强烈的环境限制制约了一般的开花模式，物种内源特征起次要作用。系统发育模式也被气候变量所掩盖。然而，当考虑结果物候时，系统发育，代表了一组物种共有的特征，占主导地位的环境限制。
Abstract Phenological patterns of dry tropical forests have been related to environmental factors, mainly rainfall and insolation, and to plant endogenous rhythms inherent to trees as large, perennial plants. Superimposed to these environmental (‘external hypothesis’) and intrinsic (‘endogenous hypothesis’) explanations, there may be phylogenetic constraints contributing to shape phenology. The phenology of tree and shrub species with fleshy fruits in a Dry Chaco forest in Argentina was studied addressing these hypotheses and following two approaches, with the species average values taken as independent data points, and removing phylogenetic effects. The hypotheses addressed are largely complementary to one another. Strong environmental restrictions conditioned general flowering patterns with species endogenous characteristics acting secondarily. Phylogenetic patterns were also masked by climatic variables. When considering fruiting phenology, however, phylogeny, representing a set of species shared traits, predominated over environmental restrictions.