Spring diets of sympatric Greater Snow Geese and Canada Geese in southern Quebec
Spring diets of sympatric Greater Snow Geese and Canada Geese in southern Quebec
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DOI：
10.1139/z96-107
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发表时间：
1996-05-01
期刊：
影响因子：
--
通讯作者：
Bergeron, R
中科院分区：
文献类型：
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作者：
Giroux, JF;Bergeron, R
我们比较了大雪雁（雁caerulescens大西洋）和加拿大鹅（Branta canadensis）在春季分期期间在圣皮埃尔湖在南部魁北克的饮食。在废弃的玉米地，饮食建立检查食管内容的鸟类射击，而喂养，而在草原上，饮食是由粪便中发现的植物碎片的显微组织学分析。当在玉米地中饲养时，玉米占两个物种的饮食的>95%。在所有的草原生境中，草，尤其是草苔草，占了这两个物种的主要食物（>86%），而豆科植物则占了
We compared the diets of Greater Snow Geese (Anser caerulescens atlantica) and Canada Geese (Branta canadensis) during their spring staging period at Lake St. Pierre in southern Quebec. In waste cornfields, diet was established by examining the esophageal contents of birds shot while feeding, whereas in grasslands, diet was determined by microhistological analysis of plant fragments found in droppings. Corn accounted for >95% of the diet of both species when feeding in cornfields. Grasses, especially Phleum pratense, dominated the diet of both species in all grassland habitats (>86%), whereas legumes represented