Sancho L G, Kappen L
Biologia Vegetal II, Fac. de Farmacia, Universidad Complutense, 28040, Madrid, Spain.
Botanisches Institut der Universität Kiel, Olshausenstraße 40, D-2300, Kiel, Federal Republic of Germany.
Oecologia. 1989 Dec;81(4):473-480. doi: 10.1007/BF00378954.
The response of net photosynthesis and dark respiration in eight species of Umbilicariaceae (lichenes) to temperature (-5, 0, 5, 10, 15, 20, 25, 30°C) and irradiance (55, 110, 220, 400, 620 μmol photons m s PAR) was studied. The samples were collected in montane and alpine localities of the Spanish Sistema Central. The species differed widely in their net photosynthetic rates. The optimal temperature for net photosynthesis in alpine species was significantly lower than in montane species. Montane species were more photophytic than alpine ones. Water saturation and water loss rate were dependent on morphology and particularly anatomy of the thallus. The physiological and structural data are useful in the interpretation of the ecology and altitudinal distribution of the Umbilicariaceae. No adaptation could be linked to particularities of the mediterranean climate.
研究了8种地衣类脐衣科植物的净光合作用和暗呼吸对温度（-5、0、5、10、15、20、25、30°C）和辐照度（55、110、220、400、620 μmol光子 m⁻² s⁻¹光合有效辐射）的响应。样本采集于西班牙中央山脉的山地和高山地区。这些物种的净光合速率差异很大。高山物种净光合作用的最适温度显著低于山地物种。山地物种比高山物种更喜光。水分饱和度和失水率取决于地衣体的形态，尤其是解剖结构。这些生理和结构数据有助于解释脐衣科的生态学和海拔分布。未发现有与地中海气候特殊性相关的适应性。
