Article& species information Categorical structure of the data List of habitats Independent variables Sample size Body mass Small intestine length Depenent variable Authors Year Species Continent Approach Factor Trophic cat. List of habitats Latitude TAR TS # of habitats Nc Ne mb c SD (mb c) mb e SD (mb e) SILc SD (SILc) SILe SD (SILe) Hedges' d var(d) Observations del Valle et al. 2006 Akodon azarae South America Experimental Diet omnivorous Grassland and marsh 37 23.5 505.1 2 5 5 27.857 5.789179994 26.339 2.994095022 333.3333333 26.08745974 370 11.18033989 1.6502 0.5362 Borkowska 1995 Apodemus agrarius Europe Observational Season omnivorous "Grassy fields, cultivated areas, rice paddies, woodlands and forests " 54 30.4 832.3 5 5 5 20.6 3.577708764 24.7 4.695742753 300 20.96313729 326.25 20.96313729 1.131 0.464 TAR =temperature annual range Borkowska 1995 Apodemus agrarius Europe Observational Season omnivorous """" 54 30.4 832.3 5 5 6 20.6 3.577708764 31.5 7.348469228 300 20.96313729 345 22.96396634 1.8619 0.5242 TS = thermal seasonality Borkowska 1995 Apodemus agrarius Europe Observational Season omnivorous """" 54 30.4 832.3 5 5 5 20.6 3.577708764 24.3 4.248529157 300 20.96313729 318.75 33.54101966 0.6055 0.4183 c = control group; e = experimental group Borkowska 1995 Apodemus agrarius Europe Observational Season omnivorous """" 54 30.4 832.3 5 5 6 22.5 3.354101966 24.1 2.694438717 275.625 20.96313729 322.5 22.96396634 1.9395 0.5376 mb = body mass Borkowska 1995 Apodemus agrarius Europe Observational Season omnivorous """" 54 30.4 832.3 5 5 9 22.5 3.354101966 26.3 4.8 275.625 20.96313729 307.5 28.125 1.1496 0.3583 SD = standard deviation Bozinovic et al.(*) 1988 Abrothrix andinus South America Experimental Diet omnivorous High Andean bogs 33.516667 26 421.9 1 8 8 27.26 1.95 27.78 3.91 3.3538 0.4514 3.6397 0.19 0.7805 0.269 SIL = small intestine length (in mm) Bozinovic et al.(*) 1988 Abrothrix andinus South America Experimental Diet omnivorous """" 33.516667 26 421.9 1 8 8 27.92 2.9 25.17 2.58 3.4943 0.2855 3.33 0.2097 -0.6202 0.262 (*) SIL / Body Length ratios are reported in this papers Bozinovic et al.(*) 1988 Abrothrix andinus South America Experimental Temperature omnivorous """" 33.516667 26 421.9 1 8 8 27.26 1.95 27.92 2.9 3.3538 0.4514 3.4943 0.2855 0.3517 0.2539 (**) Body mass was taken from bibliography Bozinovic et al.(*) 1988 Abrothrix andinus South America Experimental Temperature omnivorous """" 33.516667 26 421.9 1 8 8 27.78 3.91 25.17 2.58 3.6397 0.19 3.33 0.2097 -1.4634 0.3169 Bozinovic et al.(*) 1990 Abrothrix andinus South America Observational Season omnivorous """" 33.516667 26 421.9 1 8 9 26.59 4.25 30.02 4 2.522 0.894 2.553 1.039 0.0302 0.2361 Bozinovic et al.(*) 1990 Abrothrix andinus South America Observational Season omnivorous """" 33.516667 26 421.9 1 8 12 26.59 4.25 27.43 4.2 2.522 0.894 2.588 0.833 0.0737 0.2085 Bozinovic et al.(*) 1990 Abrothrix andinus South America Observational Season omnivorous """" 33.516667 26 421.9 1 8 11 26.59 4.25 34.47 2.6 2.522 0.894 2.872 1.273 0.2952 0.2182 Lee & Houston 1993 Arvicola terrestris Europe Experimental Diet herbivorous Marsh and swamp 57 18.5 512 2 5 5 300 300 356.2 67.97646652 417.3 28.62167011 1.0582 0.456 Woodall 1989 Arvicola terrestris Europe Experimental Diet herbivorous """" 51 21.7 512 2 7 6 117 217 470 77 570 33.32952359 1.5213 0.3985 Norrie & Millar 1990 Clethrionomys gapperi North America Observational Rep. state omnivorous Coniferous and deciduous forest 50 46.8 1147.9 2 46 15 23.5 3.391164992 27.5 5.03487835 449 47.47630988 478 46.47580015 0.606 0.0914 Norrie & Millar 1990 Clethrionomys gapperi North America Observational Rep. state omnivorous """" 50 46.8 1147.9 2 46 11 23.5 3.391164992 28 3.31662479 449 47.47630988 515 46.43274706 1.3766 0.1293 Lee & Houston 1993 Clethrionomys glareolus Europe Experimental Diet herbivorous "Forests, scrub forests, hedges, banks and swamps" 57 18.5 512 5 5 5 30 30 202 23.03150017 297.4 19.4537914 4.042 1.2169 Lee & Houston (**) 1995 Clethrionomys glareolus Europe Experimental Diet herbivorous """" 57 18.5 512 5 5 5 20.8 20.8 197.3 18.64880693 227.88 12.43253795 1.7428 0.5519 Lee & Houston (**) 1995 Clethrionomys glareolus Europe Experimental Diet herbivorous """" 57 18.5 512 5 5 5 20.8 20.8 200.08 31.08134489 227.88 43.51388284 0.6641 0.422 Lee & Houston (**) 1995 Clethrionomys glareolus Europe Experimental Diet herbivorous """" 57 18.5 512 5 5 5 20.8 20.8 200.08 24.86507591 294.6 12.43253795 4.343 1.3431 Lee & Houston 1993 Microtus agrestis Europe Experimental Diet herbivorous "Woodland, marsh and river banks" 57 18.5 512 3 5 5 35 35 131 10.50951949 155.8 8.497058314 2.344 0.6747 Lee & Houston (**) 1995 Microtus agrestis Europe Experimental Diet herbivorous """" 57 18.5 512 3 5 5 46 46 133.36 12.43253795 150.04 18.64880693 0.9506 0.4452 Lee & Houston (**) 1995 Microtus agrestis Europe Experimental Diet herbivorous """" 57 18.5 512 3 5 5 46 46 150.04 12.43253795 138.92 12.43253795 -0.8079 0.4326 Lee & Houston (**) 1995 Microtus agrestis Europe Experimental Diet herbivorous """" 57 18.5 512 3 5 5 46 46 130.58 12.43253795 155.6 6.216268977 2.2992 0.6643 McDevitt & Speakman 1994 Microtus agrestis Europe Experimental Temperature herbivorous """" 57 18.5 512 3 6 6 20.3 1.2 23.7 3.5 247 23 255 15 0.3803 0.3394 McDevitt & Speakman 1994 Microtus agrestis Europe Experimental Temperature herbivorous """" 57 18.5 512 3 6 6 20.3 1.2 22.3 2.3 247 23 250 18 0.1341 0.3341 McDevitt & Speakman 1994 Microtus agrestis Europe Experimental Temperature herbivorous """" 57 18.5 512 3 6 6 20.3 1.2 24 2.3 247 23 250 15 0.1426 0.3342 McDevitt & Speakman 1994 Microtus agrestis Europe Experimental Temperature herbivorous """" 57 18.5 512 3 6 6 20.3 1.2 30.2 0.4 247 23 263 18 0.7152 0.3546 Pei et al. 2001 Microtus brandti Asia Experimental Diet herbivorous No data 39.9 40.4 1116.4 6 5 45.9 9.308061023 40 5.366563146 256 41.64132563 287 24.59674775 0.8074 0.3963 Norrie & Millar 1990 Microtus longicaudus North America Observational Rep. state herbivorous "Grassy areas, mountain slopes, forests, stream banks, sagebrush grasslands, mountain meadows, and riparian zones" 50 46.8 1147.9 7 5 10 25.3 6.037383539 29.8 8.221921916 305 33.54101966 334 37.94733192 0.7448 0.3185 Norrie & Millar 1990 Microtus longicaudus North America Observational Rep. state herbivorous """" 50 46.8 1147.9 7 5 13 25.3 6.037383539 29.4 3.605551275 305 33.54101966 352 36.05551275 1.2629 0.3212 Kristan & Hammond 2003 Mus musculus North America Experimental Temperature omnivorous "Cultivated fields, fencerows, and even wooded areas" 35.18333333 35.9 742.1 3 10 10 21.09 1.4 20.34 0.75 332.07 9.27 332.07 9.27 0 0.2 Kristan & Hammond 2003 Mus musculus North America Experimental Temperature omnivorous """" 35.18333333 35.9 742.1 3 9 8 19.97 0.93 21.27 0.93 379.95 9.27 379.95 9.27 0 0.2361 Gross et al. 1985 Microtus ochrogaster North America Experimental Diet herbivorous "Prairies, ungrazed pastures, fallow fields, weedy areas, and sometimes in soybean or alfalfa fields " 40.55 40.2 876.6 5 9 9 41.6 6.6 44.3 5.1 295 31.2 294 19.5 -0.0366 0.2223 Gross et al. 1985 Microtus ochrogaster North America Experimental Diet herbivorous """" 40.55 40.2 876.6 5 9 8 41.1 5.7 40.3 4.5254834 297 30.6 329 27.43574311 1.0414 0.268 Gross et al. 1985 Microtus ochrogaster North America Experimental Temperature herbivorous """" 40.55 40.2 876.6 5 9 9 41.6 6.6 41.1 5.7 295 31.2 297 30.6 0.0616 0.2223 Gross et al. 1985 Microtus ochrogaster North America Experimental Temperature herbivorous """" 40.55 40.2 876.6 5 9 8 44.3 5.1 40.3 4.5254834 294 19.5 329 27.43574311 1.4113 0.2947 Hammond 1993 Microtus ochrogaster North America Observational Season herbivorous """" 40.55 40.2 876.6 5 5 6 58.29754601 19.80566345 57.52603795 20.41978097 279.7546012 49.38555042 316.5644172 54.09915996 0.6465 0.3857 Hammond 1993 Microtus ochrogaster North America Observational Season herbivorous """" 40.55 40.2 876.6 5 5 10 58.29754601 19.80566345 35.42944785 26.36182387 279.7546012 49.38555042 305.5214724 69.84171519 0.3775 0.3047 Hammond 1993 Microtus ochrogaster North America Observational Season herbivorous """" 40.55 40.2 876.6 5 5 5 58.29754601 19.80566345 38.84551032 18.64062442 279.7546012 49.38555042 309.202454 49.38555042 0.5386 0.4145 Hammond 1993 Microtus ochrogaster North America Observational Season herbivorous """" 40.55 40.2 876.6 5 5 6 58.29754601 19.80566345 41.76726697 21.69601728 279.7546012 49.38555042 312.8834356 54.09915996 0.5818 0.3821 Hammond 1993 Microtus ochrogaster North America Observational Season herbivorous """" 40.55 40.2 876.6 5 5 4 58.29754601 19.80566345 27.92535252 17.71472393 279.7546012 49.38555042 309.202454 44.17177914 0.5543 0.4671 Hammond 1993 Microtus ochrogaster North America Observational Season herbivorous """" 40.55 40.2 876.6 5 5 6 40.2607362 16.20463373 53.37423313 17.75128686 301.8404908 41.15462535 309.202454 45.0826333 0.1552 0.3678 Hammond 1993 Microtus ochrogaster North America Observational Season herbivorous """" 40.55 40.2 876.6 5 5 8 40.2607362 16.20463373 41.97506432 19.29168988 301.8404908 41.15462535 316.5644172 52.05694095 0.2831 0.3281 Hammond 1993 Microtus ochrogaster North America Observational Season herbivorous """" 40.55 40.2 876.6 5 5 8 40.2607362 16.20463373 49.65978806 20.4974205 301.8404908 41.15462535 316.5644172 52.05694095 0.2831 0.3281 Hammond 1993 Microtus ochrogaster North America Observational Season herbivorous """" 40.55 40.2 876.6 5 5 7 40.2607362 16.20463373 51.53374233 19.1735812 301.8404908 41.15462535 331.2883436 48.69480941 0.5931 0.3575 Hammond & Wunder 1991 Microtus ochrogaster North America Experimental Diet herbivorous """" 40.55 40.2 876.6 5 10 9 47.6 10.43551628 55.8 8.7 293 18.97366596 292 18 -0.0516 0.2112 Hammond & Wunder 1991 Microtus ochrogaster North America Experimental Diet herbivorous """" 40.55 40.2 876.6 5 10 10 48.8 10.11928851 48 14.862705 316 18.97366596 322 22.13594362 0.2787 0.2019 Hammond & Wunder 1991 Microtus ochrogaster North America Experimental Temperature herbivorous """" 40.55 40.2 876.6 5 10 10 47.6 10.43551628 48.8 10.11928851 293 18.97366596 316 18.97366596 1.161 0.2337 Hammond & Wunder 1991 Microtus ochrogaster North America Experimental Temperature herbivorous """" 40.55 40.2 876.6 5 9 10 55.8 8.7 48 14.862705 292 18 322 22.13594362 1.412 0.2636 Young Owl & Batzli (*) 1998 Microtus ochrogaster North America Experimental Diet herbivorous """" 41.83333333 37.7 1024.6 5 10 9 36.3 34.7 2.37 0.284604989 2.32 0.15 -0.2065 0.2122 Derting & Noakes III 1995 Microtus pennsylvanicus North America Observational Season herbivorous "Meadows, lowland fields, grassy marshes, and along rivers and lakes " 42.76666667 42.1 1100.3 4 10 10 47.76 6.957010852 25.31 1.517893277 257.59 57.49020786 272.75 67.07190917 0.2324 0.2014 Norrie & Millar 1990 Microtus pennsylvanicus North America Observational Rep. state herbivorous """" 50 46.8 1147.9 4 11 37 28 4.643274706 30.4 6.08276253 325 36.48287269 310 30.41381265 -0.4635 0.1202 Norrie & Millar 1990 Microtus pennsylvanicus North America Observational Rep. state herbivorous """" 50 46.8 1147.9 4 11 20 28 4.643274706 31.5 6.708203932 325 36.48287269 348 40.24922359 0.5745 0.1462 Young Owl & Batzli (*) 1998 Microtus pennsylvanicus North America Experimental Diet herbivorous """" 41.83333333 37.7 1024.6 4 5 10 29.8 34.5 2.59 0.313049517 2.59 0.379473319 0 0.3 Derting & Austin 1998 Microtus pinetorum North America Experimental Temperature herbivorous Deciduous forests 37 34.9 829.4 1 7 8 23.23 2.38117618 22.73 3.761808076 212.26 32.41045356 210.22 35.35533906 -0.0564 0.268 Pei et al. 2001 Microtus unguiculatus Asia Experimental Diet herbivorous "Sandy deserts, grasslands, scrub, arid steppes, and mountain valleys " 39.9 40.4 1116.4 5 5 6 58.8 8.497058314 44.8 4.654030511 305 55.90169944 322 41.64132563 0.3205 0.3713 Schwaibold & Pillay 2003 Otomys sloggetti Africa Observational Season Mountains 29.616667 24.8 426.5 1 8 8 130.8 13.01076477 130.8 13.01076477 404.5 39.45655839 419.41 58.37873585 0.2829 0.2525 Schwaibold & Pillay 2003 Otomys sloggetti Africa Observational Season """" 29.616667 24.8 426.5 1 8 7 130.8 13.01076477 130.8 12.17045603 359.56 52.69359733 399.71 47.57060857 0.7499 0.2866 Sabat & Bozinovic 2000 Phyllotis darwini South America Experimental Diet omnivorous Semiarid thornbush 33.516667 25.8 448.6 1 5 5 41.76 7.68 38.34 10.23 415.6 52.9 339.6 128.5 -0.6986 0.4244 Norrie & Millar 1990 Phenacomys intermedius North America Observational Rep. state herbivorous "Stands of spruce, lodgepole pine, aspen, and grassy meadows in montane forest " 50 46.8 1147.9 4 3 14 22.4 3.290896534 26.9 8.231646251 448 29.44486373 476 56.1248608 0.4982 0.4121 Norrie & Millar 1990 Phenacomys intermedius North America Observational Rep. state herbivorous """" 50 46.8 1147.9 4 3 11 22.4 3.290896534 28.1 4.974937186 448 29.44486373 485 46.43274706 0.7862 0.4463 Derting & Hornung 2003 Peromyscus leucopus North America Observational Season omnivorous "Dry forests, and brushlands at middle elevations" 38 36.2 885.1 2 8 8 19.16 2.602152955 19.75 2.121320344 315.6716418 15.83074883 291.0447761 37.9937972 -0.8 0.27 Derting & Hornung 2003 Peromyscus leucopus North America Observational Season omnivorous """" 38 36.2 885.1 2 8 11 19.16 2.602152955 17.52 2.421136097 315.6716418 15.83074883 302.238806 18.56319845 -0.7336 0.2301 Derting & Hornung 2003 Peromyscus leucopus North America Observational Season omnivorous """" 38 36.2 885.1 2 8 8 19.16 2.602152955 18.77 3.139554108 315.6716418 15.83074883 306.7164179 15.83074883 -0.5348 0.2589 Derting & Hornung 2003 Peromyscus leucopus North America Observational Rep. state omnivorous """" 38 36.2 885.1 2 8 8 19.16 2.602152955 20.72 3.818376618 318.6813187 37.29794011 342.8571429 37.29794011 0.6128 0.2617 Derting & Noakes III 1995 Peromyscus leucopus North America Observational Season omnivorous """" 42.76666667 42.1 1100.3 2 10 10 22.61 1.4862705 22.61 3.415259873 266.68 38.32680524 275.78 67.07190917 0.1596 0.2006 French & Porter (**) 1994 Peromyscus maniculatus North America Experimental Temperature omnivorous "Desert, grassland, forest, scrub forest, and mountains" 43.06666667 41.9 1101.3 5 8 6 20.5 20.5 160 38.8 182 35.7 0.5486 0.3024 French & Porter (**) 1994 Peromyscus maniculatus North America Experimental Temperature omnivorous """" 43.06666667 41.9 1101.3 5 7 8 20.5 20.5 152 23.3 189 34.2 1.1737 0.3138 French & Porter (**) 1994 Peromyscus maniculatus North America Experimental Temperature omnivorous """" 43.06666667 41.9 1101.3 5 8 5 20.5 20.5 146 28.8 190 29.4 1.4104 0.4015 Green & Millar 1987 Peromyscus maniculatus North America Experimental Diet omnivorous """" 49 46.1 1106.9 5 30 19 20.6 3.286335345 21.4 2.179449472 338.4 37.24513391 364.1 37.48653091 0.6773 0.0906 Green & Millar 1987 Peromyscus maniculatus North America Experimental Diet omnivorous """" 49 46.1 1106.9 5 30 18 20.6 3.286335345 20.8 2.545584412 338.4 37.24513391 363.2 33.09259736 0.682 0.0937 Green & Millar 1987 Peromyscus maniculatus North America Experimental Diet omnivorous """" 49 46.1 1106.9 5 30 19 20.6 3.286335345 21.5 2.179449472 338.4 37.24513391 377.4 33.12763197 1.0742 0.0977 Green & Millar 1987 Peromyscus maniculatus North America Experimental Temperature omnivorous """" 49 46.1 1106.9 5 30 19 20.6 3.286335345 22.7 3.05122926 338.4 37.24513391 344.6 23.5380543 0.1867 0.0863 Green & Millar 1987 Peromyscus maniculatus North America Experimental Temperature omnivorous """" 49 46.1 1106.9 5 30 18 20.6 3.286335345 23.3 2.545584412 338.4 37.24513391 378.1 39.45655839 1.0255 0.0998 Green & Millar 1987 Peromyscus maniculatus North America Experimental Temperature omnivorous """" 49 46.1 1106.9 5 30 20 20.6 3.286335345 22.6 2.236067977 338.4 37.24513391 382.2 24.59674775 1.3133 0.1006 Hammond & Kristan 2000 Peromyscus maniculatus North America Experimental Temperature omnivorous """" 44 39.9 1020.3 5 5 5 19.38 1.609968944 17.7 1.073312629 280.66 16.23385352 300.02 16.23385352 1.0772 0.458 Hammond & Kristan 2000 Peromyscus maniculatus North America Experimental Temperature omnivorous """" 44 39.9 1020.3 5 5 4 24.64 2.146625258 23.92 3.34 295.18 43.29027604 341.15 19.36 1.1644 0.5253 Hammond & Kristan 2000 Peromyscus maniculatus North America Experimental Temperature omnivorous """" 44 39.9 1020.3 5 6 6 24.16 1.175755077 26.07 2.939387691 329.05 29.63882589 321.79 29.63882589 -0.2261 0.3355 Loeb et al. 1991 Thomomys bottae North America Experimental Diet herbivorous "Grassland, and forest" 38.55 30.7 600.4 2 7 8 112.2 28.57411416 128.3 36.2038672 470 37.04051835 451 39.59797975 -0.4652 0.2751 Loeb et al. 1991 Thomomys bottae North America Experimental Diet herbivorous """" 38.55 30.7 600.4 2 7 6 112.2 28.57411416 117.3 28.65902999 470 37.04051835 459 36.74234614 -0.2773 0.3125 Loeb et al. 1991 Thomomys bottae North America Experimental Diet herbivorous """" 38.55 30.7 600.4 2 7 6 112.2 28.57411416 122.9 28.65902999 470 37.04051835 474 36.74234614 0.1008 0.3099 Loeb et al. 1991 Thomomys bottae North America Experimental Diet herbivorous """" 38.55 30.7 600.4 2 7 7 112.2 28.57411416 124.2 37.83424375 470 37.04051835 473 39.68626967 0.0732 0.2859 Loeb et al. 1991 Thomomys bottae North America Experimental Diet herbivorous """" 38.55 30.7 600.4 2 7 7 112.2 28.57411416 104.5 37.83424375 470 37.04051835 496 39.68626967 0.6341 0.3001 Loeb et al. 1991 Thomomys bottae North America Experimental Diet herbivorous """" 38.55 30.7 600.4 2 7 7 112.2 28.57411416 115.8 37.83424375 470 37.04051835 486 37.04051835 0.4044 0.2916