Reproductive ecology and pollen representation among neotropical trees
Reproductive ecology and pollen representation among neotropical trees
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DOI：
10.1046/j.1466-822x.2001.00247.x
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发表时间：
2001-07-01
影响因子：
6.4
通讯作者：
Rivera, R
中科院分区：
文献类型：
--
作者：
Bush, MB;Rivera, R
三年的花粉诱捕数据从巴罗科罗拉多岛，巴拿马，与当地的植被库存。两个假设有关花粉代表“凌乱”授粉和花的形式进行了测试。雌雄异株类群被认为是过度代表花粉光谱相比，它们发生在当地的森林。同样，风媒和“凌乱”授粉类型被认为是过度代表。风媒花粉是最好的分散花粉类型，而动物花粉在20-40 m和> 40 m的分散级中也有很好的代表性。因此，到达湖泊沉积物的花粉最有可能来自风媒物种或那些表现出“凌乱”授粉综合征的动物媒物种。可以预见的是，花粉机制会使化石记录对某些花的形态产生偏见。这些数据对利用化石花粉记录重建被子植物演化的时间和序列具有重要意义。这些数据有助于优先考虑植物被纳入现代花粉参考收集，并集中在最有可能的候选家庭的搜索“未知”类型。
Three years of pollen trapping data from Barro Colorado Island, Panama, are compared with local vegetation inventories. Two hypotheses relating pollen representation to 'messy' pollination and flower form are tested. Dioecious taxa were found to be over-represented in pollen spectra compared with their occurrence in local forests. Similarly, anemophilous and 'messy' pollination types were found to be over-represented. While anemophilous taxa were the best dispersed pollen types, zoophilous taxa were also well-represented in dispersal classes of 20-40 m and > 40 m. Thus pollen arriving to lake sediments is most likely to be from anemophilous species or those zoophilous species exhibiting 'messy' pollination syndromes. Pollination mechanisms will predictably bias the fossil record against certain flower morphologies. These data are of significance to those using the fossil pollen record to reconstruct the timing and sequence of angiosperm evolution. These data help prioritize plants to be included in modern pollen reference collections and to focus the search for 'unknown' types on most-likely candidate families.