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Morphological differentiation and life history of sympatric and allopatric dryopteroid ferns

同域和异域鳞翅目蕨类植物的形态分化和生活史

基本信息

批准号：
04640602
负责人：
SATO Toshiyuki
金额：
$ 1.15万
依托单位：
Hokkaido University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1993
项目状态：
已结题

项目摘要

Two main works were conducted during 1992-1993 as follows. (1) Leaf allometry and relative protein composition were surveyed among 20 fern species from north-western America and northernmost Japan. (2) And micro-distribution patterns and frequency were continuously surveyed on Hokkaido pteridophytes.No correlation was found between relative protein composition and leaf allometry patterns on dryopteroid ferns from northernmost Japan and north-western America. There was a tendency that sympatric ferns with possibile production of natural hybrid showed same pattern of the relative protein composition. On the other hand, the sympatic ferns showed clear difference of leaf allometry between Dryopteris tokyoensis and D.monticola, and D.cristata and D.goldiana.Spatial distribution patterns of some cool temperate ferns found in northernmost Japan were quantified by the scaling analysis. Scaling analysis includes two ways, one is derived from different resolution in a same area (A) and another is derived from same number of quadrats in different size of scope (B) from local to global scales. Here introduced the second technique (B). Each species shows its own trajectory as frequencies(%), i.e., Cystopteris fragilis shows the high frequency in northern hemisphere scale however does the low frequency in Hokkaido scale. These fluctuating trajectories with scaling analysis might be influenced by the different kind of factors, such as historical land migration and recent climatic conditions.

1992-1993年期间进行了以下两项主要工程。(1)对美国西北部和日本最北部的20种蕨类植物叶的异速生长和相对蛋白质组成进行了研究。(2)对北海道蕨类植物的微分布格局和频率进行了连续调查，发现日本最北部和美国西北部的干蕨类植物的相对蛋白质组成与叶的异速生长格局之间没有相关性。同域分布的可能产生自然杂种的蕨类植物，其相对蛋白质组成有相同的趋势。东京鳞毛蕨与山地鳞毛蕨、鸡冠鳞毛蕨与黄金鳞毛蕨的叶异速生长率存在明显差异。尺度分析包括两种方法，一种是从局部尺度到全局尺度的同一区域不同分辨率的尺度分析（A），另一种是从局部尺度到全局尺度的不同尺度的相同数量样方的尺度分析（B）。这里介绍第二种技术（B）。每个物种以频率（%）显示其自身的轨迹，即，脆囊蕨在北方半球尺度上出现频率较高，而在北海道尺度上出现频率较低。这些波动轨迹与尺度分析可能会受到不同类型的因素，如历史的土地迁移和最近的气候条件。