| Abstract: | Habitat objectives for migrating and wintering waterfowl are often established by converting population energy demands into an equivalent measure of foraging habitat. In some areas, seeds produced from moist-soil plants provide a significant proportion of the energy available to waterfowl. To accurately establish habitat objectives for migrating and wintering waterfowl, managers must estimate seed production from moist-soil plants and have information on metabolizable energy (ME) of moist-soil seeds. Although methods for estimating seed production have been developed, ME has been determined for few natural seeds. We determined true metabolizable energy (TME) of 10 moist-soil seeds commonly consumed by wintering and migrating ducks. TME estimates were similar (P>0.05) for hairy crabgrass (Digitaria sanguinalis; 3.09 kcal/g), little hairy crabgrass (D. ischaemum; 3.10 kcal/g), pigweed (Amaranthus spp.; 2.97 kcal/g), yellow foxtail (Setaria lutescens; 2.88 kcal/g), fall panicum (Panicum dichotomiflorum; 2.75 kcal/g), curly dock (Rumex crispus; 2.68 kcal/g), and wild millet (Echinochloa crusgalli; 2.61 kcal/g), but less (P<0.05) for beakrush (Rynchospora corniculata; 1.86 kcal/g), paspalum (Paspalum laeve; 1.57 kcal/g), and nodding or curltop ladysthumb smartweed (Polygonum lapathifolium; 1.52 kcal/g). TME values determined for moist-soil seeds in this study will allow managers to accurately estimate carrying capacity of waterfowl habitats. |
| Genre: | Article |
| ProdID: | 70023941 |
| Citation Author: | Checkett, J. M.; Drobney, R. D.; Petrie, M. J.; Graber, D. A. |
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| Citation End Page: | 1119 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Wildlife Society Bulletin |
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| Citation Number Of Pages: | 7 |
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| Citation Search Results Text: | True metabolizable energy of moist-soil seeds; 2002; Article; Journal; Wildlife Society Bulletin; Checkett, J. M.; Drobney, R. D.; Petrie, M. J.; Graber, D. A. |
| Citation Start Page: | 1113 |
| Citation Volume: | 30 |
| Citation Year: | 2002 |
| Type: | citation/reference |
| Text: | True metabolizable energy of moist-soil seeds; 2002; Article; Journal; Wildlife Society Bulletin; Checkett, J. M.; Drobney, R. D.; Petrie, M. J.; Graber, D. A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Tue, 1 Jan 2002 00:00 -0600 |
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