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首页> 外文会议>Progress in Environmental Science and Technology >Red-stemmed Feather Moss Pleurozium Schreberi (Britt.) Mitt. – A Bioindicator of UV Radiation?
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Red-stemmed Feather Moss Pleurozium Schreberi (Britt.) Mitt. – A Bioindicator of UV Radiation?

机译：红梗羽毛苔藓侧耳Schreberi（布里特）。 –紫外线辐射的生物指示剂？

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A field study was conducted in a dry pine forest at the Finnish Ultraviolet International Research Center (FUVIRC, http://fuvirc.oulu.fi/) in Sodankyl(a), Finland (67°22' N, 26°38' E). We investigated the responses of UV-absorbing compounds in the transplanted moss Pleurozium schreberi to enhanced UV radiation. The experiment lasted for a year (2003). The mosses had been transplanted in the previous fall. They were exposed to UV-BCIE radiation at 52% above the ambient level, simulating an approximate 20% reduction in the ozone column, under arrays of lamps filtered with cellulose diacetate, which transmitted both UV-B and UV-A radiation. The moss was also exposed to elevated UV-A radiation under control arrays of lamps filtered with Melinex polyester and to ambient radiation under arrays with no lamps in them. Simultaneously, in the same experiment, P. Schreberi growing in situ was monitored for four years, in 2002-2005 [1]. The results of the transplanted mosses were compared to the results of the in situ mosses. An increase of UV-absorbing compounds was found in the in situ mosses under enhanced UV-B radiation compared to the UV-A control mosses during the first year [1]. Even though the treatment effect on UV-absorbing compounds was transient, the compounds correlated with the amount of UV-A and UV-B radiation under elevated UV-B treatment. The transplanted mosses showed no treatment effect. A correlation with the irradiation of the preceding days and month was found in the in situ mosses but not in the transplanted mosses [1]. There were less UV-absorbing compounds in the transplanted mosses compared to the in situ mosses, which may imply that the transplanted mosses had not yet adapted to their new growing site. Our data indicate that P. Schreberi tolerates a 52 % increase in UV-BCIE radiation above the subarctic ambient level. The UV-B-absorbing compounds of the transplanted mosses responded to high ambient early summer levels, but the treatment differences were not significant. The in situ mosses responded during the first year of exposure by increasing their UV-absorbing compounds and after three years of exposure by acclimating to their altered radiation environment [1]. Our results indicate that P. Schreberi can be used to assess the local radiation climate, but that in situ mosses are more useful than transplanted mosses.
机译：在芬兰Sodankyl（a）的芬兰紫外线国际研究中心（FUVIRC，http://fuvirc.oulu.fi/）的干燥松树林中进行了田野研究（北纬67°22'，东经26°38'） ）。我们调查了移植的苔藓白灵菇中吸收紫外线的化合物对增强的紫外线辐射的响应。实验持续了一年（2003年）。苔藓是在去年秋天移植的。将它们暴露在高于环境水平52％的UV-BCIE辐射下，模拟在透过二乙酸纤维素过滤的灯阵列下，臭氧柱中臭氧的减少量大约为20％，同时透射UV-B和UV-A辐射。在用Melinex聚酯过滤的对照灯阵列下，苔藓还暴露于升高的UV-A辐射下，而在其中没有灯的阵列下，苔藓暴露于环境辐射下。同时，在同一实验中，对2002年至2005年原位生长的P. Schreberi进行了四年监测[1]。将移植的苔藓的结果与原位苔藓的结果进行比较。与第一年的UV-A对照苔藓相比，在增强的UV-B辐射下原位苔藓中发现了吸收紫外线的化合物增加[1]。即使对吸收紫外线的化合物的治疗效果是短暂的，但在升高的UV-B处理下，这些化合物仍与UV-A和UV-B的辐射量相关。移植的苔藓无治疗效果。在原位苔藓中发现了与前几天和月份辐射的相关性，而在移植苔藓中则没有发现[1]。与原位苔藓相比，移植苔藓中的紫外线吸收化合物较少，这可能意味着移植苔藓尚未适应新的生长地点。我们的数据表明，P。Schreberi可以承受的紫外线-BCIE辐射比北极地区的环境水平高52％。移植的苔藓中吸收UV-B的化合物对夏季初高水平的环境有反应，但治疗差异不明显。在暴露的第一年，原位苔藓通过增加其紫外线吸收化合物来做出响应，而在暴露三年后，通过适应其变化的辐射环境来做出响应[1]。我们的结果表明，P。Schreberi可用于评估当地的辐射气候，但是原位生苔藓比移植生苔藓更有用。

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