How to predict attachment potential of seeds to sheep and cattle coat from simple morphological seed traits
How to predict attachment potential of seeds to sheep and cattle coat from simple morphological seed traits
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如何从简单的种子形态特征预测种子对羊和牛皮毛的附着潜力
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
P. Poschlod
中科院分区：
文献类型：
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作者：
C. Römermann;O. Tackenberg;P. Poschlod
传播是决定植物生命史许多方面的过程。但到目前为止，还很难量化。许多研究将其评估为一种分类特征，即假设一个物种是否通过某种媒介进行分散。很少考虑物种之间传播潜力的逐渐差异。
在本文中，我们重点关注动物表面的关键过程：物种对动物皮毛的附着潜力。我们提出了两个简单模型 (GLM)，如何根据易于测量的种子性状量化和预测对绵羊羊毛和牛毛的附着潜力。为了校准模型，我们研究了 130 种植物种子在机械摇动的羊和牛皮毛上的附着潜力，并测量了描述种子的性状。我们发现种子质量和种子形态与附着潜力相关。对于绵羊毛，种子质量的对数和不同种子形态类型的常数的组合解释了 85% 的附着潜力的变化。对于牛毛，71% 得到了解释。为了验证模型，它们被应用于另外 36 个物种。预测和实验测量的附着电位与羊毛的 r=0.84 和牛毛的 r=0.61 相关。因此，如果种子质量和种子形态已知，则可以使用所描述的模型评估大量物种的种子对羊或牛皮毛的附着潜力。
Dispersal is a process that determines many aspects in the life-history of plants. Up to now, however, it is difficult to quantify. Many studies rather assess it as a categorical trait, i.e. assuming a species is dispersed by a certain vector or not. Gradual differences in the dispersal potential between species are rarely considered.
In this paper we focus on the key process of epizoochory: the attachment potential of species to animal coats. We present two simple models (GLMs) how to quantify and to predict attachment potentials to sheep wool and to cattle hair from easily measurable seed traits. To calibrate the models, we investigated the attachment potential of seeds of 130 plant species on mechanically shaken coats of sheep and cattle and measured traits describing the seeds. We found that seed mass and seed morphology were correlated with attachment potentials. For sheep wool, the combination of the logarithm of seed mass and a constant for the different seed morphology types explained 85% of the variation of attachment potentials. For cattle hair, 71% were explained. To validate the models, they were applied to 36 additional species. Predicted and experimentally measured attachment potentials were correlated with r=0.84 for sheep wool and r=0.61 for cattle wool. Thus, the attachment potential of seeds to sheep or cattle coat can be assessed for a large set of species using the described models if seed mass and seed morphology are known.