Moser Thomas J, Nash Thomas H
Department of Botany and Microbiology, Arizona State University, 85281, Tempe, AZ, USA.
Oecologia. 1978 Jan;34(1):37-43. doi: 10.1007/BF00346239.
The daily photosynthetic patterns of Cetraria cucullata were followed over the 1976 summer period at Anaktuvuk Pass, Alaska. With the exception of rainy peroids, the lichen exhibited a strong diurnal pattern with peak photosynthetic activity occurring between 0300 and 0700 h. This correllated with periods of maximal lichen water retention and the presence of direct solar radiation. When the lichen was moist, a strong gradient in photosynthetic activity was observed with no activity in the lichen bases and maximal activity in the lichen tips.
1976年夏季期间，在阿拉斯加的阿纳克图沃克山口对兜状冰岛衣的每日光合模式进行了跟踪研究。除了降雨期外，地衣呈现出强烈的昼夜模式，光合活动高峰出现在03:00至07:00之间。这与地衣最大持水量时期和直接太阳辐射的存在相关。当地衣湿润时，观察到光合活动存在强烈梯度，地衣基部无活动，地衣尖端活动最大。
