Kamstra, J. 2021. “Butterflies Region 22 Eastern Canada” pp.106-111 in NABA Butterfly Counts 2020 Report. North American Butterfly Association Butterfly Counts. [also for other years 2009 to 2020]
Kamstra, J. 2020, “Ontario Butterfly Counts in 2020” pp.30-43 in Ontario Lepidoptera 2020. Toronto Entomologists Association Occ. Pub. # 51-2020. [also for other years 2011 to 2019]
Kamstra, J. 2019, Japanese Chaff-flower, Achyranthes japonica (Amaranthaceae), on the Erie islands, an invasive plant new to Canada. Canadian Field-Naturalist 133(1): 56–59. https://doi.org/10.22621/cfn.v133i1.2161
Forsyth, R.G. and J. Kamstra, 2019, Roman Snail, Helix pomatia (Mollusca, helicidae), in Canada. Canadian Field-Naturalist 133(2): 156-159. https://doi.org/10.22621/cfn.v133i2.2150
Kamstra, J., M. Dewar and D. Elder. 2019, Range Expansion of the Dion Skipper in Ontario. pp.10-14 in Ontario Lepidoptera 2018. Toronto Entomologists Association Occ. Pub. # 49-2019.
COSEWIC. 2010, COSEWIC Assessment and Status Report of the Queensnake Regina septemvittata in Canada. Committee on the Status of Endangered Wildlife in Canada, Ottawa. 34 pp.
Kamstra, J. and S. Spisani, 2009, A life science inventory and evaluation of Awenda Provincial Park. Ontario Parks, Central Region.
Kamstra, J., 2006, National Recovery Strategy for the Eastern Foxsnake (Elaphe gloydi) in Canada. Eastern Foxsnake and Eastern Hog-nosed Snake Recovery Team.
Kamstra, J., 2003, A life science inventory and evaluation of Camden East Alvar. Ontario Ministry of Natural Resources, Kingston District.
Kamstra, J., M.J. Oldham and P.A. Woodliffe, 1995, A life science inventory and evaluation of six natural areas in the Erie Islands. Ontario Ministry of Natural Resources, Chatham. 160p.
Kamstra, J., 1991, Rediscovery of the northern dusky salamander (Desmognathus fuscus) in Ontario, Canadian Field Naturalist 105(4):561-563.
Kamstra, J. and K. Towle, 1991, A herpetofaunal inventory of St. Lawrence Islands National Park. Gartner Lee Limited for Canadian Parks Service. 59p.
Kamstra, J., 1991, Life science survey of the northeastern portion of the Rouge Valley Park. Ontario Ministry of Natural Resources, Central Region, Aurora, Ontario. 48p.
Kamstra, J., 1985, The Judith underwing moth (Catocala judith) in Ontario, Canadian Field Naturalist 99(3):364.
Kamstra, J., 1983, Northern range extension of the two-lined Salamander (Eucycea bilineata) in Ontario, Canadian Field Naturalist 97(1):116.