Primary productivity of emergent macrophytes in a Wisconsin freshwater marsh ecosystem
Primary productivity of emergent macrophytes in a Wisconsin freshwater marsh ecosystem
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DOI：
10.2307/2424831
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发表时间：
1978-10
影响因子：
0.6
通讯作者：
J. Klopatek;F. Stearns
中科院分区：
文献类型：
--
作者：
J. Klopatek;F. Stearns
1972年，在威斯康星州东南部的一个浅的半管理的蓄水池特里萨沼泽中，对各种挺水植物的初级生产进行了研究。优势水生植物包括香蒲、河三棱草、湖苔草、草芦和一种灌木柳。生产的季节性模式以及总产量在物种之间差异很大。估计凋落物损失和地下生产，年净初级生产量范围从1181克/米/2/年湖苔草近3200克/米/2/年香蒲。现存量最高值一般属于报告的最高值。然而，生长季节的平均生产力相对较低，地上作物的平均生产力为6.31至10.52克/米/平方米/天。初级生产也估计发生在泥滩沼泽缩编后的短暂物种。沼泽内的高初级生产似乎是基于高营养水平的沼泽水和土壤化学。
In 1972 primary production of various emergent macrophytes was examined in Theresa Marsh, a shallow, semimanaged impoundment in southeastern Wisconsin. Dominant macrophytes included Typha latifolia, Scirpus fluviatilis, Carex lacustris, Phalaris arundinacea and a shrub, Salix interior. Seasonal patterns of production as well as total production varied greatly among species. With estimates for litter loss and belowground production, annual net primary production ranged from 1181 g/m/sup 2//year for Carex lacustrris to nearly 3200 g/m/sup 2//year for Typha latifolia. Peak standing crop values were generally among the highest reported. Average productivities during the growing season, however, were relatively low, ranging from 6.31 to 10.52 g/m/sup 2//day for aboveground standing crops. Primary production was also estimated for transient species that occurred on mud flats following a marsh drawdown. The high primary production within the marsh appears to be based on high nutrient levels as indicated by the marsh water and soil chemistry.