McEvoy Peter B, Cox Caroline S
Ecology. 1987 Dec;68(6):2006-2015. doi: 10.2307/1939891.
A mark-recapture study of wind-dispersed achenes of Senecio jacobaeo conducted in western Oregon showed that the proportion of achenes dispersing a given distance varied significantly with changes in site (inland vs. coastal), surroundings (mown vs. unmown), height of release (0-50, 50-100, 100-150, 150-200 cm), time of release (early vs late in the season), direction of dispersal, and achene type (disk vs. ray achenes). Influences of height of release, direction, achene type, and time of release were strongly conditioned by site and surroundings. The majority of achenes dispersed very short distances. Of 53 301 achenes falling in the recapture area, 31% travelled only 1 m, 89% travelled 5 m or less, and none were collected > 14 m from the source. Thus, while it is theoretically possible for these wind-dispersed achenes to travel long distances, actual dispersal distances are short due to local conditions of humidity, wind, and vegetation structure.
在俄勒冈州西部开展的一项关于千里光瘦果风力传播的标记重捕研究表明，瘦果传播特定距离的比例会因地点（内陆与沿海）、周围环境（修剪过与未修剪）、释放高度（0 - 50厘米、50 - 100厘米、100 - 150厘米、150 - 200厘米）、释放时间（季节早期与晚期）、传播方向以及瘦果类型（盘状瘦果与射线瘦果）的变化而显著不同。释放高度、方向、瘦果类型和释放时间的影响在很大程度上受到地点和周围环境的制约。大多数瘦果传播的距离非常短。在落入重捕区域的53301颗瘦果中，31%仅传播了1米，89%传播了5米或更短的距离，且没有一颗在距离源地超过14米处被收集到。因此，虽然从理论上讲这些风力传播的瘦果有可能传播很长距离，但由于当地的湿度、风力和植被结构条件，实际传播距离很短。
