Clark Deborah A, Clark David B
Organization for Tropical Studies, Universidad de Costa Rica/Ciudad Universitaria, Costa Rica, Central America.
Oecologia. 1981 May;49(1):73-75. doi: 10.1007/BF00376900.
The importance of animals as seed dispersers for Bursera graveolens (Burseraceae) was assessed by analysis of juvenileadult interplant distances on Santa Fe Island, Galápagos. The Santa Fe Bursera population consists of two non-overlapping classes old, large adults, and juveniles recruited since the exermination of feral goats in 1971. Juveniles occurred on a variety of substrate types, as well as under and away from woody vegetation. Most juveniles arise from seeds dispersed by animals; 86% of the juveniles were ≧3 m away from the crown of the nearest adult, and half were ≧7 m away. Although all juveniles occurred within 35 m of an adult Bursera, seed dispersal by animals is an important factor in the regeneration of B. graveolens on Santa Fe.
通过分析加拉帕戈斯群岛圣达菲岛上幼年植株与成年植株之间的种间距离，评估了动物作为格雷氏裂榄（橄榄科）种子传播者的重要性。圣达菲岛的裂榄种群由两类不重叠的植株组成：一类是古老、高大的成年植株，另一类是自1971年消灭野生山羊以来新招募的幼株。幼株出现在各种基质类型上，以及木本植被之下和远离木本植被的地方。大多数幼株源自动物传播的种子；86%的幼株距离最近成年植株的树冠≧3米，一半的幼株距离≧7米。尽管所有幼株都出现在距离成年裂榄植株35米以内，但动物传播种子是圣达菲岛格雷氏裂榄再生的一个重要因素。
