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Small-Mammal Occupancy in Freshwater Marshes of Mandalay National Wildlife Refuge, Louisiana

机译:路易斯安那州曼德勒国家野生动物保护区淡水沼泽中的小哺乳动物

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摘要

Small mammals are key consumers in the marsh food web and could serve as indicators of a marsh's potential to support higher-level predators. We studied how small-mammal occupancy varied among plant communities in coastal Louisiana freshwater marshes. We sampled small mammals at 36 sites on 4 different occasions during the late spring in freshwater marshes of the Mandalay National Wildlife Refuge, LA Mammalian diversity was low; we captured only Oryzomys palustris (Marsh Rice Rats). Occupancy modeling revealed a positive association between Marsh Rice Rat site occupancy and Sagitaria lancifolia (Bulltongue Arrowhead) biomass. Our data suggest that subtle changes in plant-species composition within a marsh may affect the distribution of the most common small mammal in the ecosystem.
机译:小型哺乳动物是沼泽食物网中的主要消费者,可以作为沼泽支持高级捕食者潜力的指标。我们研究了路易斯安那州沿海淡水沼泽植物群落中小哺乳动物的占有率如何变化。我们在春季晚些时候在曼德勒国家野生动物保护区的淡水沼泽中的4个不同场合对36个地点的小型哺乳动物进行了采样,洛杉矶的哺乳动物多样性很低。我们只捕获了Oryzomys palustris(沼泽稻鼠)。居住模型揭示了沼泽稻鼠大鼠站点的占有率与箭叶兰(Bugtongue Arrowhead)生物量之间存在正相关。我们的数据表明,沼泽中植物物种组成的细微变化可能会影响生态系统中最常见的小型哺乳动物的分布。

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