J. C. Randolph and Guy N. Cameron. 2001. Consequences of diet choice by a small generalist herbivore. Ecological Monographs 71: 117-136.
Appendix A. Mean biomass (g dry mass m-2; SE in parentheses) of major foods (as defined by Randolph et al. 1991) during four seasons in three patch types occupied by cotton rats. Values are for foods only, not total plant biomass. Abbreviations are: MO = monocot, MI = mixed, DI = dicot patches types; lgs = lower green stems, ugs = upper green stems, uds = upper dry stems, lds = lower dry stems, gl = green leaves, and f = fruits.
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| Plant Species | Plant Part | MO | MI | DI | MO | MI | DI | MO | MI | DI | MO | MI | DI |
| Schizachyrium scoparium | lgs | 302.7 | 62.8 | 33.9 | 142.2 | 57.1 | 26.7 | 75.8 | 38.9 | 7.6 | 8.1 | 3.1 | 0.3 |
| (21.7) | (12.2) | (9.2) | (20.4) | (10.1) | (7.4) | (7.6) | (7.1) | (1.6) | (0.7) | (0.7) | (0.1) | ||
| ugs | 218.4 | 45.3 | 24.5 | 146.8 | 58.9 | 27.5 | 28.7 | 14.8 | 2.9 | 7.8 | 3.3 | 0.4 | |
| (15.6) | (8.8) | (16.6) | (21.1) | (10.4) | (7.6) | (2.9) | (2.7) | (0.6) | (0.3) | (0.8) | (0.1) | ||
| lds | 86.0 | 44.5 | 8.7 | 302.5 | 117.6 | 12.4 | |||||||
| (8.7) | (8.1) | (1.8) | (25.0) | (24.6) | (3.9) | ||||||||
| uds | 41.6 | 21.5 | 4.2 | 304.2 | 116.2 | 11.8 | |||||||
| (4.2) | (3.9) | (10.7) | (24.0) | (22.8) | (3.7) | ||||||||
| Spartina spartinae | lgs | 3.8 | 1.3 | 7.2 | 4.7 | 6.1 | 19.2 | 8.4 | 1.9 | ||||
| (3.2) | (0.6) | (4.5) | (1.9) | (4.1) | (11.9) | (4.3) | (1.1) | ||||||
| ugs | 2.3 | 0.8 | 7.6 | 4.9 | 4.9 | 19.6 | 8.6 | 1.9 | |||||
| (1.9) | (0.4) | (4.8) | (2.1) | (3.3) | (12.2) | (4.4) | (1.1) | ||||||
| Tripsacum dactyloides | lgs | 3.7 | 116.7 | 82.1 | 3.5 | ||||||||
| (2.1) | (26.9) | (27.2) | (1.4) | ||||||||||
| ugs | 3.0 | 0.3 | 0.1 | 143.8 | 42.9 | 4.2 | |||||||
| (1.6) | (0.3) | (0.1) | (33.2) | (14.2) | (1.7) | ||||||||
| lds | 17.3 | ||||||||||||
| (7.1) | |||||||||||||
| Ampelopsis arborea | gl | 0.2 | 0.3 | 0.7 | |||||||||
| (0.2) | (0.3) | (0.5) | |||||||||||
| f | 0.6 | 1.1 | |||||||||||
| (0.6) | (0.7) | ||||||||||||
| Eupatorium coelestinum | gl | 0.2 | 0.7 | 0.1 | |||||||||
| (0.1) | (0.4) | (0.1) | |||||||||||
| Eupatorium rugosum | gl | 0.2 | 3.3 | 3.2 | 0.3 | 1.0 | 1.5 | ||||||
| (0.1) | (1.7) | (1.5) | (0.3) | (0.5) | (0.8) | ||||||||
| Ligustrum sinense | f | 0.4 | 0.3 | ||||||||||
| (0.1) | (0.1) | ||||||||||||
| Phyla incisa | gl | 0.1 | |||||||||||
| (0.1) | |||||||||||||
| Rubus trivalis | gl | 16.4 | 10.3 | 4.8 | 5.2 | 0.1 | 8.9 | 6.3 | 3.0 | 1.6 | |||
| (2.6) | (1.4) | (0.7) | (1.1) | (0.1) | (1.9) | (9.3) | (0.7) | (0.3) | |||||
| f | 1.9 | 0.7 | |||||||||||
| (0.5) | (0.2) | ||||||||||||
| Solidago sp. | gl | 0.7 | 24.2 | 46.3 | 0.3 | 32.2 | 92.0 | 3.9 | 36.3 | 77.9 | 1.0 | ||
| (0.6) | (4.1) | (5.8) | (0.3) | (7.0) | (8.6) | (0.5) | (3.9) | (10.9) | (0.3) | ||||
| Solidago sempervirens | gl | 3.1 | 0.4 | 1.3 | 0.3 | 0.2 | 0.4 | 11.3 | |||||
| (1.5) | (0.2) | (1.0) | (0.3) | (0.2) | (0.2) | (3.0) | |||||||
| Verbena rigida | gl | 0.9 | 0.1 | 6.5 | 8.9 | 1.9 | 4.6 | 2.4 | 3.4 | 0.1 | 1.7 | ||
| (0.6) | (0.1) | (2.9) | (5.5) | (0.8) | (2.7) | (0.8) | (2.6) | (0.1) | (0.8) | ||||
| TOTAL | 535.5 | 156.4 | 122.3 | 573.5 | 167.4 | 159.6 | 366.3 | 177.8 | 112.7 | 689.8 | 261.3 | 43.6 | |
Literature Cited
Randolph, J.C., G.N. Cameron, and J.A. Wrazen. 1991. Dietary
choice of a generalist grassland herbivore, Sigmodon hispidus.
Journal of Mammalogy 76: 113-1126.