Seasonal, Interannual, and Interlatitudinal Patterns for Saltmarsh Fungal Standing Crop (FSC) and Fungal Productivity (FP)

[9521588 .纽维尔]最近的研究表明，这种真菌在机械上和生理上特别善于分解维管植物的死亡物质。然而，关于真菌质量积累和真菌次生生产力的数据只提供了三个小快照，而且只在乔治亚海边缘。几乎所有的数据都是关于光滑的草，互花米草。这项研究将获得两种主要的西大西洋草，互花草和秋葵的新数据，因为它在多年的时间内会在许多季节发生变化。每年将对来自三个大西洋和一个墨西哥湾盐沼的样本进行分析，以确定盐沼真菌生产力的纬度变化。测定真菌质量和产量的方法有：麦角甾醇的液相色谱定量法测定质量和用放射性标记的醋酸盐掺入麦角甾醇测定产量。该研究将为将沿海真菌生态学带入现代微生物生态学时代奠定基础，并允许对盐沼真菌对营养动态影响的假设进行测试。＊＊＊

9521588 Newell Recent research has revealed that the fungi are particularly well adapted mechanically and physiologically for decomposition of dead material from vascular plants. However, data concerning the accumulation of fungal mass and fungal secondary productivity is available for only three small snapshots in time and only the Georgia ocean edge. Almost all of the data are for the smooth cordgrass, Spartina alternifloria. This research will obtain new data for two predominant western Atlantic grasses, S.alternifloria and Juncus roemerianus as it changes over many seasons within a multi-year period. Samples from three Atlantic and one Gulf of Mexico saltmarsh will be analyzed each year permitting determination of the latitudinal variation in saltmarsh fugal productivity. The methods used in measuring fungal mass and productivity will liquid-chromatographic quantification of ergosterol for mass and incorporation of radiolabelled acetate into erogosterol for productivity. This study will lay the foundation for coastal mycological ecology to be brought into the modern microbial-ecological era and allow the testing of hypotheses regarding the impact of saltmarsh fungi on nutrient dynamics. ***