Journal
JOURNAL OF WILDLIFE MANAGEMENT
Volume 71, Issue 6, Pages 1964-1967Publisher
WILEY
DOI: 10.2193/2006-144
Keywords
habitat quality; invasive species; moist-soil plants; true metabolizable energy; waterfowl; wetlands
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Understanding the true metabolizable energy (TME) value of food is important for constructing bioenergetic models. We estimated gross energy, nutrient composition, and TME values for the seeds of 3 native and 1 invasive exotic wetland plant that occur in the diet of waterfowl. True metabolizable energy values were 0.50 +/- 0.080 kcal/g for spike rush (Ekocharis palustris), 0.65 +/- 0.080 kcal/g for alkali bulrush (Schoenoplectus maritimus), 1.31 +/- 0.090 kcal/g for perennial pepperweed (Lepidium latifolium), and 2.52 +/- 0.090 kcal/g for lamb's quarters (Chenopodium album). The TME value for 3 of 4 species, including the invasive species, was low relative to the TME value of other seeds consumed by waterfowl.
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