black walnut agroforestry in Missouri, USA: A temperate zone assessment. In L. E. Buck, J. P. Lassoie, & E. C. M. Fernandes (Ed.), Agroforestry in sustainable agricultural systems (pp. 97–110). Boca Raton, FL: CRC Press. https://doi.org/10.1201/9781420049473.ch535 Garrett, H. E., & Kurtz, W. B. (1983). Silvicultural and economic relationships of integrated forestry–farming with black walnut. Agroforestry Systems, 1, 245–256. https://doi.org/10.1007/BF00130610
36 Garrett, H. E., Kurtz, W. B., Buck, L. E., Lassoie, J. P., Gold, M. H., Pearson, H. A., … Slusher, J. P. (1994). Agroforestry: An integrated land‐use management system for production and farmland conservation. Washington, DC: Natural Resource Conservation Service.
37 Gibbs, S., Koblents, H., Coleman, B., Gordon, A., Thevathasan, N., & Williams, P. (2016). Avian diversity in a temperate tree‐based intercropping system from inception to now. Agroforestry Systems, 90, 905–916 [erratum: 90, 917]. https://doi.org/10.1007/s10457‐016‐9901‐7
38 Gold, M. A., & Garrett, H. E. (2008). Agroforestry nomenclature, concepts and practices. In H. E. Garrett (Ed.), North American agroforestry: An integrated science and practice (2nd ed.). Madison, WI: ASA. https://doi.org/10.2134/2009.northamericanagroforestry.2ed
39 Gordon, A. M., & Jose, S. (2008). Applying ecological knowledge to agroforestry design: A synthesis. In S. Jose and A. M. Gordon (Eds.), Towards agroforestry design: An ecological approach (pp. 301–306). Dordrecht, the Netherlands: Springer. https://doi.org/10.1007/978‐1‐4020‐6572‐9_18
40 Gordon, A. M., Newman, S. M., Coleman, B. R. W., & Thevathasan, N. V. (2018). Temperate agroforestry: An overview. In A. M. Gordon, S. M. Newman, & B. R. W. Coleman (Ed.), Temperate agroforestry systems (2nd ed., pp. 1–6). Wallingford, U.K.: CAB International.
41 Graham, J., Voroney, P., Coleman, B., Deen, B., Gordon, A., Thimmanagari, M., & Thevathasan, N. (2019). Quantifying soil organic carbon stocks in herbaceous biomass crops grown in Ontario, Canada. Agroforestry Systems, 93, 1627–1635. https://doi.org/10.1007/s10457‐018‐0272‐0
42 Graungaard, K. C. (2015). Bacterial communities associated with the cycling of nitrogen in a tree‐based intercropping system (Master’s thesis). Retrieved from University of Guelph Atrium repository (http://hdl.handle.net/10214/9283).
43 Gray, R. (2000). Root distribution of hybrid poplar in a temperate agroforestry intercropping system (Master’s thesis). Guelph, ON: Department of Environmental Biology, University of Guelph.
44 Greller, A. M. (1988). Deciduous forest. In M. G. Barbour & W. D. Billings (Eds.), North American terrestrial vegetation (pp. 287–316). New York: Cambridge Univ. Press.
45 Hamerlynck, E. P., & Knapp, A. K. (1996). Environmental and physiological factors influencing the distribution of oaks near the edge of their range. In D. H. Hartnett (Ed.), Proceedings of the 14th North American Prairie Conference: Prairie biodiversity (pp. 17–20). Manhattan, KS: Kansas State University.
46 Harrington, L. (1992). Measuring sustainability: Issues and alternatives. Journal of Farming Systems Research–Extension, 3, 1–19.
47 Harris, B. (1986). Growing shiitake commercially. Madison, WI: Science Tech.
48 Harris, W. F., Sollins, P., Edwards, N. T., Dinger, B. E., & Shugart, H. H. (1975). Analysis of carbon flow and productivity in a temperate deciduous forest ecosystem. In Productivity of world ecosystems: Proceedings of a symposium (pp. 116–122). Washington, DC: National Academies Press.
49 Heichel, G. H. (1978). Stabilizing agricultural energy needs: Role of forages, rotations, and nitrogen fixation. Journal of Soil and Water Conservation, 33(6), 279–282.
50 Hicks, D. J., & Chabot, B. F. (1985). Deciduous forest. In B. F. Chabot & H. A. Mooney (Ed.), Physiological ecology of North American plant communities (pp. 257–277). New York: Chapman and Hall.
51 Holland, M. M., Risser, P. G., & Naiman, R. J. (Ed.) (1991). Ecotones: The role of landscape boundaries in the management and restoration of changing environments. New York: Chapman and Hall.
52 Holland, B., Welch, A. A., Unwin, I. D., Buss, D. H., Paul, A. A., & Southgate, D. A. T. (1991). The composition of foods. Cambridge, U.K.: Royal Society of Chemistry.
53 Hunt, S. L. (2005). Algorithm development for the quantification of the environmental impacts of agroforestry and the development of a framework for agroforestry evaluation. Indian Head, SK: Agriculture and AgriFood Canada.
54 Jackson, L. E., Strauss, R. B., Firestone, M. K., & Bartolome, J.W. (1990). Influence of tree canopies on grassland productivity and nitrogen dynamics in deciduous oak savanna. Agriculture, Ecosystems & Environment, 32, 89–105. https://doi.org/10.1016/0167‐8809(90)90126‐X
55 Jeltsch, F., Milton, S., Dean, W. D. J., & Van Rooyen, N. (1996). Tree spacing and coexistence in semiarid savannas. Journal of Ecology, 84, 583–595. https://doi.org/10.2307/2261480
56 Johnson, A. S. (1989). The thin green line: Riparian corridors and endangered species in Arizona and New Mexico. In G. Mackintosh (Ed.), Preserving communities and corridors (pp. 35–46). Washington, DC: Defenders of Wildlife.
57 Johnson, B. (1995). A financial profile of Nebraska farm businesses (Report 140492). Lincoln, NE: Department of Agricultural Economics, University of Nebraska. Retrieved from http://ageconsearch.umn.edu/record/140492/files/un‐l‐rr‐174.pdf
58 Jose, S. (2009). Agroforestry for ecosystem services and environmental benefits: An overview. Agroforestry Systems, 76, 1–10. https://doi.org/10.1007/s10457‐009‐9229‐7
59 Jose, S. (2019). Environmental impacts and benefits of agroforestry. In Oxford Research Encyclopedia of Environmental Science. https://doi.org/10.1093/acrefore/9780199389414.013.195
60 Jose, S., & Gordon, A. M. (Eds.). 2008. Toward agroforestry design: An ecological approach. Dordrecht, the Netherlands: Springer. https://doi.org/10.1007/978‐1‐4020‐6572‐9
61 Keever, C. (1950). Causes of succession on old fields of the Piedmont, North Carolina. Ecological Monographs, 20, 229–250. https://doi.org/10.2307/1948582
62 Kleinman, P. J. A., Pimentel, D., & Bryant, R. B. (1995). The ecological sustainability of slash‐and‐burn agriculture. Agriculture, Ecosystems & Environment, 52, 235–249. https://doi.org/10.1016/0167‐8809(94)00531‐I
63 Lefroy, E., & Hobbs, R. (1992). Ecological indicators for sustainable
