Molvar Erik M, Bowyer R Terry, Van Ballenberghe Victor
Institute of Arctic Biology, University of Alaska Fairbanks, 99775, Fairbanks, AK, USA.
Department of Biology and Wildlife, University of Alaska Fairbanks, 99775, Fairbanks, AK, USA.
Oecologia. 1993 Jul;94(4):472-479. doi: 10.1007/BF00566961.
Moose (Alces alces) browsing on diamondleaf willow (Salix planifolia pulchra) caused significant increases in subsequent growth of stems and leaves in treeline plant communities in central Alaska, USA. Willows growing in the shade were significantly more palatable for moose than those growing in the sun. Moose density had strong effects on rates of nutrient cycling, ostensibly through effects of browsing and inputs from fecal and urinary nitrogen. Moose are a keystone herbivore that likely mediate rates of nutrient cycling in northern ecosystems.
在美国阿拉斯加中部的树线植物群落中，驼鹿（驼鹿属）啃食柳叶柳（美丽柳叶菜）会导致随后茎和叶的生长显著增加。生长在阴凉处的柳树比生长在阳光下的柳树对驼鹿来说明显更可口。驼鹿密度对养分循环速率有强烈影响，表面上是通过啃食以及粪便和尿液中氮的输入产生影响。驼鹿是一种关键食草动物，可能调节北方生态系统中的养分循环速率。
