Table S1. Summary of data used to estimate the potential magnitude and proportion of predators emerging in relation to mean annual stream temperature. Data reflect benthic samples in streams. P = taxa that are predatory as adults. NP = taxa that are non-predatory as adults. Te = temperate, Tr = tropical. See Appendix A for detailed information on corresponding site numbers. See text for details on calculations of adult trophic structure. Stream P NP Total P NP Total P NP Total metric temp (°C) no. m-2 mg AFDM m-2 Site Zone 1 Te 0.0 15433.0 15433.0 2.7 2 Te 0.0 23252.0 23252.0 3.5 3 Te 0.0 4 Te 1.0 463.2 464.2 6.8 5 Te 48.6 248.4 297.0 6.8 6 Te 51.5 196.4 247.9 7.4 7 Te 8 Te 9 Te 195.0 47128.0 47323.0 9.3 10 Te 39.0 18140.0 18179.0 9.4 0.0 695.5 326.0 other metrics 695.5 4.0 326.0 7.5 2874.0 5273.0 8147.0 mg AFDM m-2 yr-1 7.5 11 Te 161.0 42010.0 42171.0 9.6 12 Te 70.0 18198.0 18268.0 11.9 13 Te 114.5 27641.0 27755.5 12.6 14 Te 277.0 25105.0 25382.0 15 Te 1.4 16 Te 17 Tr 100.0 39723.0 39823.0 17.7 18 Tr 82.5 9250.0 9332.5 20.9 19 Tr 27.0 8048.5 8075.5 21.7 159.0 47.0 1583.0 1630.0 13.9 160.4 14.6 168.3 3443.7 3612.0 g DM yr-1 Tr 0.7 5.1 5.8 no. sample-1 Tr 0.2 3.3 3.5 mg AFDM sample-1 20 17.6 23.5 21 Tr 110.7 820.1 930.7 24.6 22 Tr 15.2 545.8 561.0 25.0 23 Tr 5.8 259.9 265.7 16.6 10.6 27.2 25.0 24 Tr 83.0 3620.0 3703.0 151.9 89.9 241.8 25.0 25 Tr 61.1 3078.5 3139.6 147.0 152.5 299.5 26.0 26 Tr 43.7 1973.5 2017.1 216.8 36.1 252.9 26.0 27 Tr 135.4 5196.3 5331.7 218.5 219.9 438.4 26.0 28 Tr 48.0 3327.4 3375.4 36.0 118.9 154.9 26.0 29 Tr 26.2 2973.7 2999.9 160.0 47.9 207.9 26.0 Tr 0.6 40.5 41.1 no. sample-1 30 26.7 Tr 0.0 11.4 11.4 -1 mg AFDM sample All sites Min 0.0 159.0 160.4 1.0 10.6 27.2 2.7 Max 277.0 47128.0 47323.0 218.5 1583.0 1630.0 26.7 Mean 69.4 12908.9 12978.3 99.5 287.9 387.4 16.2 SD 71.8 14755.3 14798.6 80.5 447.9 429.3 8.5 Temperate sites Min 0.0 Max 277.0 Mean 78.0 159.0 160.4 1.0 196.4 247.9 2.7 47128.0 47323.0 51.5 1583.0 1630.0 17.6 19826.1 19904.1 37.0 622.8 9.1 659.8 SD 96.6 15798.8 15868.8 24.1 650.5 653.4 4.2 Tropical sites Min 5.8 Max 135.4 Mean SD 259.9 265.7 16.6 10.6 27.2 17.7 39723.0 39823.0 218.5 219.9 438.4 26.7 61.5 6568.1 6629.6 135.2 96.6 231.8 24.3 40.9 10808.3 10822.8 80.1 73.4 126.6 2.6 Table S2. Summary of site data for publications used in the analysis of stream temperature and potential aquatic-terrestrial insect subsidies. Italicized lat/long values represent estimates based on physical descriptions in the text of respective publications. See Appendix B for mean annual stream temperature across sites. lat long width (m) discharge (m3/s) Sample method Microhabitat sampled 39.04'N 104.12'W 3.9 0.24 Hess mixed 39.19'N 106.19'W 3.6 0.17 Hess mixed 64.0'N 46°28'N 46°28'N 46°28'N 141'W 89°1'W 89°1'W 89°1'W n/a n/a n/a n/a 35.25'N 92.4'W 43°32'N 70°27'W 39°3'N 39°3'N 39°3'N 44.4'N 79°41'W 79°41'W 79°41'W 111.02'W 8.70 Surber Hess Hess Hess inverted box sampler Surber/Ekman dredge Surber/corer Surber/corer Surber/corer Surber 35.03'N 83.24'W < 0.01 corer mixed 39.05'N 96.35'W 0.014 corer mixed Rempel et al. (2000) 49.13'N 121.49'W Smock et al. (1985) Callisto et al. (2004) Callisto et al. (2004) 33.5'N 19°20'S 19°20'S 80.49'W 43°44'W 43°44'W Stream name Reference 1 Four Mile1 2 East Fork1 3 4 5 6 Dennison River State Creek upstream Walton Creek upstream Shane Creek upstream Carlisle & Clements (2003) Carlisle & Clements (2003) Lotspeich et al. (1970) Entrekin et al. (2007) Entrekin et al. (2007) Entrekin et al. (2007) 7 Little Red River Johnson & Harp (2005) 8 Goosefare Brook1 9 10 11 12 Canoe Run Stonelick Run Wilson Hollow Madison River Basin 13 Unnamed1 14 Kings Creek Woodcock & Huryn (2007) Angradi (1996) Angradi (1996) Angradi (1996) Kerans et al. (2005) Lugthart & Wallace (1992) Stagliano & Whiles (2002) 15 Fraser River 16 17 18 Cedar Creek Indaiá1 Indaiá1 0.06 0.04 0.04 2.7 1.7 2.7 1.6 7.0 0.5 Shipek sample/Surber multiple Surber Surber riffle mixed mixed mixed mixed riffle gravel mixed mixed mixed 19 20 Peixe1 Gandoca River Callisto et al. (2004) Ramirez et al. (1998) Lorion & Kennedy 21 multiple1 (2009) Bojsen & Jacobsen 22 Rio Napo drainage1 (2003) Ramirez & Pringle 23 Sábalo (1998) 24 Saltito Ramirez et al. (2006) 25 Sura-30 Ramirez et al. (2006) 26 Salto Ramirez et al. (2006) 27 Sura-60 Ramirez et al. (2006) 28 Arboleda Ramirez et al. (2006) 29 Piper Ramirez et al. (2006) 30 Carbon River Ramirez et al. (1998) 1 Data from reference/upstream sites only 19°20'S 9°40'S 43°44'W 82°45'W 25.0 9.35'N 82.40'W 1.00'N 77.40W 2.7 10°26'N 84°01'W 5.0 10°26'N 10°26'N 10°26'N 10°26'N 10°26'N 10°26'N 9°40'S 84°01'W 84°01'W 84°01'W 84°01'W 84°01'W 84°01'W 82°45'W Surber kick-net mixed mixed Surber mixed corer mixed 0.31 Surber mixed 0.11 0.61 0.45 0.18 0.17 0.03 2.98 corer corer corer corer corer corer kick-net run run run run run run mixed 0.80 References for Table S2 Angradi T.R. (1996) Inter-habitat variation in benthic community structure, function, and organic matter storage in 3 Appalachian headwater streams. Journal of the North American Benthological Society, 15, 42-63. Bojsen B.H. & Jacobsen D. (2003) Effects of deforestation on macroinvertebrate diversity and assemblage structure in Ecuadorian Amazon streams. Archiv für Hydrobiologie, 158, 317342. Callisto M., Goulart, M, Medeiros A.O., Moreno P. & Rosa C.A. (2004) Diversity assessment of benthic macroinvertebrates, yeasts, and microbiological indicators along a longitudinal gradient in Serra do Cipo, Brazil. Brazilian Journal of Biology, 64, 743-755. Carlisle D.M. & Clements W.H. (2003) Growth and secondary production of aquatic insects along a gradient of Zn contamination in Rocky Mountain streams. Journal of the North American Benthological Society, 22, 582-597. Entrekin S.A., Rosi-Marshall E.J., Tank J.L., Hoellein T.J. & Lamberti G.A. (2007) Macroinvertebrate secondary production in 3 forested streams of the upper Midwest, USA. Journal of the North American Benthological Society, 26, 472-490. Johnson R.L. & Harp G.L. (2005) Spatio-temporal changes of benthic macroinvertebrates in a cold Arkansas tailwater. Hydrobiologia, 537, 15-24. Kerans A.B.L., Dybdahl M.F., Gangloff M.M., Jannot J.E. & Dybdahl M.E. (2011) Potamopyrgus antipodarum: distribution, density, and effects on native macroinvertebrate assemblages in the Greater Yellowstone Ecosystem. Journal of the North American Benthological Society, 24, 123-138. Lorion C.M. & Kennedy B.P. (2009) Relationships between deforestation, riparian forest buffers and benthic macroinvertebrates in neotropical headwater streams. Freshwater Biology, 54, 165-180. Lotspeich F.B., Mueller E.W. & Frey P.J. (1970) Effects of large scale forest fires on water quality in interior Alaska. U.S. Department of the Interior, Federal Water Pollution Control Administration, Alaska Water Laboratory, College, Alaska. 115 pp. Lugthart G.J. & Wallace J.B. (2011) Effects of disturbance on benthic functional structure and production in mountain streams. Journal of the North American Benthological Society, 11, 138-164. Ramirez A., Paaby P., Pringle C.M. & Aguero G. (1998) Effect of habitat type on benthic macroinvertebrates in two lowland tropical streams, Costa Rica. Revista de Biologia Tropical, 46, 201-213. Ramirez A. & Pringle, C.M. (1998) Structure and production of a benthic insect assemblage in a neotropical stream. Journal of the North American Benthological Society, 17, 443-463. Ramírez A., Pringle C.M. & Douglas M. (2006) Temporal and spatial patterns in stream physicochemistry and insect assemblages in tropical lowland streams. Journal of the North American Benthological Society, 25, 108-125. Rempel L.L., Richardson J.S. & Healey M.C. (2000) Macroinvertebrate community structure along gradients of hydraulic and sedimentary conditions in a large gravel-bed river. Freshwater Biology, 45, 57-73. Smock L.A., Gilinsky E. & Stoneburner D.L. (1985) Macroinvertebrate production in a southeastern United States blackwater stream. Ecology, 66, 1491-1503. Stagliano D.M. & Whiles M.R. (2002) Macroinvertebrate production and trophic structure in a tallgrass prairie headwater stream. Journal of the North American Benthological Society, 21, 97-113. Woodcock T.S. & Huryn A.D. (2007) The response of macroinvertebrate production to a pollution gradient in a headwater stream. Freshwater Biology, 52, 177-196. Table S3. Summary of emergence trophic structure from eight tropical (Tr) and two temperate (Te) sites. NP = non-predatory taxa, P = predatory taxa. Data for Diptera do not include Empididae and Dolichopodidae. Note that Dewey 1986 data represent emergence from a pond. All others are from streams. Plecoptera Odonata Empididae Dolichopodidae Reference Freitag (2004) Freitag (2004) Freitag (2004) Böttger (1975) Masteller and Buzby (1993) Wolf et al. (1989) Wolf et al. (1989) Wolf et al. (1989) Dewey (1986) Masteller and Buzby 1993) Habitat stream stream stream stream Zone Tr Tr Tr Tr NP 9357 1226 3648 24126 NP 660 5 1 7476 NP 225 33 162 2814 NP 255 0 2 201 P 5 8 21 4 P 114 5 11 0 P 138 31 27 0 0.02 0.03 0.02 0.00 stream Tr 3925 3324 2561 0 1 791 0 0.07 stream stream stream pond Tr Tr Tr Te 8344 7801 5763 537 2 13 152 25 1640 1651 394 0 12 0 0 18 1 51 8 0 653 1000 72 0 614 810 3776 0 0.11 0.16 0.38 0.00 PA, US stream Te 16171 679 244 148 0 161 0 0.01 Tropical Temperate Proportion of predators Trichoptera Location Philippines Philippines Philippines Africa Puerto Rico Columbia Columbia Columbia KS, US Diptera Ephemeroptera Total number of emerging insects collected mean sd min max 0.1005 0.1255 0.0001 0.3793 0.0046 0.0000 0.0000 0.0093 References for Table S3 Böttger K. (1975) Productionsbiologische Studien an dem zentralafrikanischen Bergbach Kalengo. Archiv für Hydrobiologie, 75, 1-31. Dewey S. L. (1986) Effects of the herbicide atrazine on aquatic insect community structure and emergence. Ecology, 67,148-162. Freitag H. (2004) Composition and longitudinal patterns of aquatic insect emergence in small rivers of Palawan Island, the Philippines. International Review of Hydrobiology, 89, 375391. Masteller E. C. & Buzby K. M. (1993) Composition and temporal abundance of aquatic insect emergence from a tropical rainforest stream, Quebrada Prieta, at El Verde, Puerto Rico. Journal of the Kansas Entomological Society, 66, 133-139. Wolf E. M., Matthias U., & Roldan P. (1989) Estudio del Desarollo de los Insectos Acúaticos, su Emergencia y Ecología en tres Ecosistemas Diferentes en el Departemento de Antioquia. Actualidades Biologicas, 17, 2-27.