28. Maya遗迹
The results from an autecological study of the growth, reproduction, and population dynamics of Brosimum alicastrum in southern Mexico are applied to the controversy surrounding the use of this species in Maya subsistence practice. The frequent occurrence of B. alicastrum near ruins is explained by its competitive advantage on shallow limestone soils coupled with a continual input of bat-dispersed seed. Populations of the tree at Tikal are then compared with other naturally occurring populations as an example of how a detailed ecological analysis may furnish valuable insight into the historical use of a plant species. The Tikal populations are shown to be atypical in terms of phenology, productivity and breeding systems, suggesting that some form of artificial selection may have been practiced by the Maya.
2016届陕西汉中市高考英语二轮阅读理解选练(1)(含答案)
2016年高考英语二轮复习课件(通用版):语法填空和短文改错第3讲1
2016年高考英语二轮复习课件(通用版):完形填空
2016届陕西汉中市高考英语二轮阅读理解选练(7)(含答案)
2016届陕西汉中市高考英语二轮阅读理解选练(8)(含答案)
2016届高考英语二轮复习专题(江苏专用):题型组合练(2)
2016届陕西汉中市高考英语二轮阅读理解选练(5)(含答案)
2016年高考英语二轮复习课件(通用版):语法填空和短文改错第3讲10
2016届湖北武汉高考英语阅读理解二轮基础训练(12)(含答案)
2016年高考英语二轮复习课件(通用版):语法填空和短文改错第3讲9
2016届陕西汉中市高考英语二轮阅读理解选练(6)(含答案)
2016年高考英语二轮复习课件(通用版):语法填空和短文改错第3讲7
2016届高三英语二轮复习综合能力训练:2
2016届高三英语二轮复习综合能力训练:1
2016届高考英语二轮复习专题(江苏专用):题型组合练(1)
2016届陕西汉中市高考英语二轮阅读理解选练(10)(含答案)
2016年高考英语二轮复习课件(通用版):语法填空和短文改错第2讲
2016年高考英语二轮复习课件(通用版):语法填空和短文改错第3讲3
2016届陕西汉中市高考英语二轮阅读理解选练(2)(含答案)
What your desk says about you 桌面物品的摆放方式可揭示人格特征
2016届陕西汉中市高考英语二轮阅读理解选练(3)(含答案)
2016届高考英语二轮复习专题(江苏专用):题型组合练(10)
2016届陕西汉中市高考英语二轮阅读理解选练(4)(含答案)
2016届高考英语二轮复习专题(江苏专用):题型组合练(6)
2016年高考英语二轮复习课件(通用版):阅读理解 第1讲
2016年高考英语二轮复习课件(通用版):书面表达
2016届高考英语二轮复习专题(江苏专用):题型组合练(8)
2016届高考英语二轮复习专题(江苏专用):题型组合练(3)
2016届高三英语二轮复习专题能力训练:21 阅读表达(3)
2016年高考英语二轮复习课件(通用版):阅读理解 第3讲