Ecological Responses to Increases in Carbon Dioxide Concentration and Temperature: A Global Change Study at Abisko, Sweden

海洋生物实验室的研究人员将与瑞典科学家合作，确定瑞典北方的北方冻土带生态系统如何应对气候变化。 将进行一项人工现场实验，以研究变暖和二氧化碳加倍对矮灌木生态系统健康的影响。 对“温室”条件增加的生态反应将被纳入一个模型，以便评估从分子到整个生态系统的变化。 此外，亦会研究在暖化及富二氧化碳的情况下，生态系统及土壤对大气的反馈。 这项研究将有助于预测敏感的北极生态系统对假定的“温室”条件下气候强迫的反应，如果大气中的二氧化碳水平在全球气温变暖的同时增加一倍，可能会发生这种情况。

Researchers at the Marine Biological Laboratory will collaborate with Swedish scientists to determine how boreal-tundra ecosystems in northern Sweden respond to climate change. A manipulative field experiment will be conducted to examine the effects of a warming and doubling of the carbon dioxide on the health of a dwarf shrub ecosystem. The ecological response to the increased "greenhouse" conditions will be incorporated into a model that will allow assessment of the changes from the molecular to whole-ecosystem scale. Feedbacks from the ecosystem and soil to the atmosphere under the warmed, carbon dioxide enriched condition will also be examined. This study will facilitate predictions of the response of a sensitive Arctic ecosystem to climate forcing under postulated increased "greenhouse" conditions that might occur if atmospheric carbon dioxide levels are doubled at the same time as global temperatures are warmed.