Interference to hardwood regeneration in northeastern North America: Assessing and countering ferns in northern hardwood forests

Northern Journal of Applied Forestry

Volumn 23, Issue 3, 2006, Pages 166-175

  Engelman, Heather M ^a   Nyland, Ralph D ^a  

^a STATE UNIVERSITY OF NEW YORK   (United States)

Author keywords

Dennstaedtia punctilobula; Herbicides; Mowing; Pteridium aquilinum; Shade; Thelypteris noveboracensis

Indexed keywords

HARDWOODS; HERBICIDES;

DENNSTAEDTIA PUNCTILOBULA; MOWING; PTERIDIUM AQUILINUM; SHADE; THELYPTERIS NOVEBORACENSIS;

FORESTRY;

FORESTRY; HARDWOODS; HERBICIDES; SEEDLINGS;

CERVIDAE; DENNSTAEDTIA; DENNSTAEDTIA PUNCTILOBULA; FILICOPHYTA; PTERIDIUM AQUILINUM; THELYPTERIS NOVEBORACENSIS;

EID: 33748961976     PISSN: 07426348     EISSN: None     Source Type: Journal    
DOI: 10.1093/njaf/23.3.166     Document Type: Article

References (147)

1. ANDERSON, J.A., D.J. BLAHNA, AND D.J. CHAVEZ. 2000. Fern gathering on the San Bernardino National Forest: cultural versus commercial values among Korean and Japanese participants. Soc. Nat. Resourc. 13(8):747-762.
2. BERGLUND, J.V. 1980. Sugar maple - beech - yellow birch 25. P. 31 in Forest cover types of the United States and Canada, F.H. Eyre (ed.), Society of American Foresters, Washington, DC.
3. BIGGIN, P. 1982. Forestry and bracken. Proc. Roy. Soc. Edin. 81B:19-27.
4. BLATCHFORD, D.W. 1979. The use of chemicals in the forestry commission. Edinburgh Forestry Commission, Edinburgh, UK.
5. BOWERSOX, T.W., AND L.H. MCCORMICK, 1987. Herbaceous communities reduce the juvenile growth of northern red oak, white ash, yellow poplar, but not white pine. P. 39-43 in Proc. of the 6th central hardwood forest conference, Hay, R.L. F.W. Woods, and H. DeSelm (eds.). Univ. of Tennessee-Knoxville, Knoxville, TN.
6. BRACH, A.R., S.J. MCNAUOHTON, AND D.J. RAYNAL. 1993. Photosynthetic adaptability of two fern species of a Northern hardwood forest. Am. Fern J. 83(2):47-33.
7. BROOKS, K.L. 1979. A Catskill flora and economic botany. I. Pteridophyta, the ferns and fern allies, N.Y. State Mus. Bull. No. 438.
8. CALLAGHAN, T.V., G.J. LAWSON, AND R. SCOTT. 1982. Bracken as an energy crop? P. 1239-1245 in Solar World Forum, Hall, D.H., and J. Motion (eds.). Pergamon Press, Oxford, England.
9. CALLAGHAN, T.V., R. SCOTT, G.J. LAWSON, AND A.M. MAINWARING. 1985. P. 1-58 in An experimental assessment of native and naturalized species of plants as renewable sources of energy in Great-Britain, Comm. of the European Communities. Energy, Final Rep., Luxembourg.
10. CHAVEZ, D., AND C. GILL. 1999. Bracken fern harvesting. For. Res. West. 99:5-10.
11. CHAZON, R.L., AND R.W. PEARCY. 1991. The importance of sunflecks for forest understory plants: Photosynthetic machinery appears adapted to brief, unpredictable periods of radiation. BioSci. 41(11):760-766.
12. CODY, W.J., AND C.W. CROMPTON. 1975. The biology of Canadian weeds 15. Pteridium aquilinum (L.) Kuhn. Can. J. Plant Sci. 55:1059-1072.
13. CODY, W.J., I.V. HALL, AND C.W. CROMPTON. 1977. The biology of Canadian weeds 26. Dennstaedtia punctilobula (Michx.) Moore. Can. J. Plant Sci. 57:1159-1168.
14. COMEAU, P.G., T.F. BRAUMANDL, AND C.Y. XIE, 1993. Effects of overtopping vegetation on light availability and growth of Engelmann spruce (Picea engelmannii) seedlings. Can. J. For. Res. 23(10):2044-2048.
15. CONARD, H.S. 1908. The structure and life history of the hayscented fern. Carnegie Inst., Washington, DC. Publ. 94.
16. CONWAY, E. 1953. Spore and sporeling survival in bracken fern (Pteridium aquilinum (L.) Kuhn). J. Ecol. 41:289-294.
17. CONWAY, E., AND R. STEPHENS. 1957. Sporeling establishment in Pteridium aquilinum: effects of mineral nutrients. J. Ecol. 45(2):389-399.
18. COOK, G.T., N.H. STEPHEN. AND H.J. DUNCAN. 1982. Fundamental studies in bracken control - the use of additives to enhance herbicide uptake and translocation. Proc. Roy. Soc. Edin. 81B:97-109.
19. COOPER-DRIVER, G., S. FINCH, T. SWAIN, AND E. BERNAYS. 1977. Seasonal variation in secondary plant compounds in relation to the payability of Pteridium aquilinum, Biochem. Syst. Ecol. 5:177-183.
20. Cox, H.R. 1915. Eradication of ferns from pastureland. USDA Farmer's Bull. 687:1-12.
21. CURTIS, R.O., AND P.M. RUSHMORE. 1958. Some effects of stand density and deer browsing on reproduction in an Adirondack hardwood stand. J. For. 56(2):116-121.
22. DANIELS, R.E. 1985. Studies in the growth of Pteridium aquilinum (L.) Kuhn (bracken). 1. Regeneration of rhizome segments. Weed Res. 25:381-388.
23. DANIELS, R.E. 1986. Studies in the growth of Pteridium aquilinum (L.) Kuhn (bracken). 2. Effects of shading and nutrient application. Weed Res. 26:121-126.
24. DE LA CRETAZ, A.L., AND M.J. KELTY. 1999. Establishment and control of hay-scented fern: A native invasive species. Bio. Invasions 1:223-236.
25. DEMCHIK, M.C., AND W.E. SHARPE. 1999. Foliar and root chemistry response of hayscented fern to liming and fertilization. North. J. Appl. For. 16(1):33-35.
26. DEMCHIK. M.C., AND W.E. SHARPE. 2001. Forest floor plant response to lime and fertilizer before and after partial cutting of a northern red oak stand on an extremely acidic soil in Pennsylvania, USA. For. Ecol. Manage. 144:239-244.
27. DENT, C.H.R. 1971. Bracken fern: A poisonous weed. Ag. Gaz. New S. Wales. 82(2):103-105.
28. DOLLING, A. 1996a. Changes in Pteridium aquilinum growth and phytotoxicity following treatments with lime, sulphuric acid, wood ash, glyphosate and ammonium nitrate. Weed Res. 36:293-301.
29. DOLLING, A.H.U. 1996b. Interference of bracken (Pteridium aquilinum L. Kuhn) with Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies L. Karst.) seedling establishment. For. Ecol. Manage. 88:227-235.
30. DOLLING, A. 1999. The vegetative spread of Pteridium aquilinum in a hemiboreal forest - invasion or revegetation? For. Ecol. Manage. 124:177-184.
31. DREW, A.P. 1990. Fern and aster effects on black cherry shelterwood regeneration. Can. J. For. Res. 20(9):1513-1514.
32. DYER, A.F., AND S. LINDSAY, 1992. Soil spore banks of temperate ferns. Am. Fern J. 82(3):89-122.
33. EVANS, I.E., J.H. PROROK, R.C. COLE, M.H. AL-SALMANI, A.M.H. AL-SAMARRAI, M.C. PATEL, AND R.M.M. SMITH. 1982a. The carcinogenic, mutagenic and teratogenic toxicity of bracken. Proc. Roy. Soc. Edin. 81B:65-77.
34. EVANS, W.C., M.C. PATEL, AND Y. KOOHY. 1982b. Acute bracken poisoning in homogastric and ruminant animals. Proc. Roy. Soc. Edin. 81B:29-64.
35. FERGUSON, D.E., AND D.L. ADAMS. 1994. Effects of pocket gophers, bracken fern, and western coneflower on survival and growth of planted conifers. Northwest Sci. 68:242-249.
36. FERGUSON, D.E., AND R.J. BOYD. 1988. Bracken fern inhibition of conifer regeneration in northern Idaho. USDA For. Serv. Res. Pap. INT-388.
37. FLACCUS, E. 1959. Revegetation of landslides in the white mountains. Ecology 40:692-703.
38. FLETCHER, W.W., AND R.C. KIRKWOOD. 1979. The bracken fern (Pteridium aquilinum L. (Kuhn): Its biology and control. P. 591-589 in The experimental biology of ferns, Dyer, A.F. (ed.). Academic Press, London.
39. FRANKLAND, J.C. 1976. Decomposition of bracken litter. Bot. J. Linn. Soc. 73:133-143.
40. FREDERICKSEN, T.S., B. ROSS, W. HOFFMAN, M. LESTER, J. BEYEA, M.L. MORRISON, AND B.N. JONSON. 1998. Adequacy of natural hardwood regeneration in forestlands in northeastern Pennsylvania. North. J. Appl. For. 15(3):130-134.
41. FURUYA, M. 1978. Photocontrol of developmental processes in fern gametophytes. Bot. Mag. Tokyo Special Issue 1:219-242.
42. GEORGE, L.O., AND F.A. BAZZAZ. 1999a. The fern understory as an ecological filter: Emergence and establishment of canopy tree seedlings. Ecology 80(3):833-845.
43. GEORGE, L.O., AND F.A. BAZZAZ. 1999b. The fern understory as an ecological filter: Growth and survival of canopy tree seedlings. Ecology 80(3):846-856.
44. GLIESSMAN, S.R., AND C.H. MULLER. 1972. The phytotoxic potential of bracken, Pteridium aquilinum (L.) Kuhn. Madroño 21:299-304.
45. GRONINGER, J.W., AND L.H. MCCORMICK. 1992. Effects of soil disturbance on hayscented fern establishment. North. J. Appl. For. 9(1):29-31.
46. HALL, I.V. 1955. Floristic changes following the cutting and burning of a woodlot for blueberry production. Can. J. Agric. Sci. 35:143-152.
47. HANNAH, P.R. 1991. Regeneration of northern hardwoods in the northeast with the shelterwood method. North. J. Appl. For. 8(3):99-104.
48. HANSON, P.J., AND R.K. DIXON. 1985. Allelopathic inhibition of northern red oak by interrupted fern and goldenrod. P. 269-274 in Proc. of the 5th central hardwood forest conference, Dawson, J.O., and K.A. Majerus (eds.), Univ. of Illinois, Urbana-Champaign, IL.
49. HANSON, P.J., AND R.K. DIXON. 1987. Allelopathic effects of interrupted fern on northern red oak seedlings: Amelioration by Suillus luteus L. Fr. Plant Soil. 98:43-51.
50. HEYWOOD, B.J. 1982. Bracken control by asulam. Proc. Roy. Soc. Edin. 81B:111-116.
51. HILL, J.D., AND J.A. SILANDER JR. 2001. Distribution dynamics of two ferns: Dennstaedtia punctilobula (Dennstaedtiaceae) and Thelypteris noveboracensis (Thelypteridaceace) in a northeast mixed hardwoods-hemlock forest. Am. J. Bot. 88(5):894-902.
52. HIPPENSTEEL, T.E., AND T.W. BOWERSOX. 1995. Effects of hayscented fern density and light on white ash seedling growth. P. 256-70 in 10th central hardwood conference. USDA For. Serv. Gen. Tech. Rep. NE-197.
53. HIRONO, I. 1986. Carcinogenic principles isolated from bracken fern. CRC Crit. Rev. Toxicol. 17(1):1-22.
54. HIRONO, I., C. SHIBUYA, M. SHIMIZU, AND K. FUSHIMI. 1972. Carcinogenic activity of processes bracken used as human food. J. Natl. Cancer Inst. 48:1245-1249.
55. HIRONO, I., H. OGINO, M. FUJIMOTO, K. YAMADA, Y. YOSHIDA, M. IKAGAWA, AND M. OKUMURA. 1987. Induction of tumors in ACI rats given a diet containing Ptaquiloside, a bracken carcinogen. J. Natl. Cancer Inst. 79:1143-1149.
56. HOLLINGER, D.Y. 1987. Photosynthesis and stomatal conductance patterns of two fern species from different forest understoreys. J. Ecol. 75:925-935.
57. HORSLEY, S.B. 1977a. Allelopathic inhibition of black cherry by fern, grass, goldenrod, and aster. Can. J. For. Res. 7:205-216.
58. HORSLEY, S.B. 1977b. Allelopathic inhibition of black cherry. II. Inhibition by woodland grass, ferns, and club moss. Can. J. For. Res. 7:515-519.
59. HORSLEY, S.B. 1979. Chemicals from herbaceous plants maintain forest openings. Penn. For. 68(4):12-24.
60. HORSLEY, S.B. 1981. Control of herbaceous weeds in Allegheny hardwood forests with herbicides. Weed Sci. 29:655-662.
61. HORSLEY, S.B. 1982. Development of reproduction in Allegheny hardwood stands after herbicide-clearcuts and herbicide-shelterwood cuts. USDA For. Serv. Res. Note NE-308.
62. HORSLEY, S.B. 1984a. Ferns: Shapers of tomorrow's northern hardwood forests? Andirondac. 48(9):20-23.
63. HORSLEY, S.B. 1984b. Hayscented fern rhizome development in uncut and thinned Allegheny hardwood stands. Am. J. Bot. 71:80-81.
64. HORSLEY, S.B. 1988a. Control of understory vegetation in Allegheny hardwood stands with Oust. North. J. Appl. For. 5:261-262.
65. HORSLEY, S.B. 1988b. Effects of hayscented fern on nitrogen transformations in a shelter-wood cut Allegheny hardwood stand. P. 232 in Proc. of the North American forest biology workshop. July 20-22, 1988. Vancouver, BC. Univ. B.C., Vancouver.
66. HORSLEY, S.B. 1989. Effect of fern groundcover and overstory tree roots on nitrogen transformations in a partially cut Prunus-Acer Allegheny hardwood stand (abstract). Am. J. Bot. Suppl. 76(6):108.
67. HORSLEY, S.B. 1991. Using Roundup and Oust to control interfering understories in Allegheny hardwood stands. P. 281-90 in Proc. of the 8th central hardwood forest conference, McCormick L.H., and K.W. Gottschalk (eds.). USDA For. Serv. Gen. Tech. Rep. NE-148.
68. HORSLEY, S.B. 1993a. Mechanisms of interference between hayscented fern and black cherry. Can. J. For. Res. 23:2059-2069.
69. HORSLEY, S.B. 1993b. Role of allelopathy in hayscented fern interference with black cherry regeneration. J. Chem. Ecol. 19(11):2737-2755.
70. HORSLEY, S.B., AND D.A. MARQUIS. 1983. Interference by weeds and deer with Allegheny hardwood reproduction. Can. J. For. Res. 13:61-69.
71. HORSLEY, S.B., L.R. AUCHMOODY, AND R.S. WALTERS. 1994. Regeneration principles and practices. P. 205-245 in Quantitative silviculture for hardwood forests of the Alleghenies, Marquis, D.A. (ed.) USDA Gen. Tech. Rep. NE-183.
72. HORSLEY, S.B., L.H. MCCORMICK, J.W. GRONINGER. 1992. Effects of timing of Oust application on survival of hardwood seedlings. North. J. Appl. For. 9(1):22-27.
73. HORSLEY, S.B., S.L. STOUT, AND D.S. DECALESTA. 2003. White-tailed deer impact on the vegetation dynamics of a Northern hardwood forest. Ecol. Appl. 13(1):98-118.
74. HOSHIZAKI, B.J., AND R.C. MORAN. 2001. Fern grower's manual. Timber Press, Portland, OR.
75. HOUGH, A.F. 1953. Preliminary recommendations for the management of black cherry on the northern Allegheny Plateau. J. For. 51:184-188.
76. HUGHES, J.W., AND T.J. FAHEY. 1991. Colonization dynamic of herbs and shrubs in a disturbed northern hardwood forest. J. Ecol. 79:605-616.
77. KURD, P.D. 1995. Does hayscented fern experience temporary photoinhibition following tree canopy removal? MSc Thesis, Pennsylvania State Univ., University Park, PA. 120 p.
78. JARRETT, W.F.H. 1982. Bracken and cancer. Proc. Roy. Soc. Edin. 81B:79-83.
79. JONES, E.W. 1947. Scots pine regeneration in a new forest inclosure. Forestry 21:151-178.
80. KARJALAINEN, U., AND D. BOOMSMA. 1989. Bracken fern control for radiata pine plantations in South Australia. Austral. For. 52(1):37-44.
81. KELTY, M.J. 1979. Use of the shelterwood method for regenerating northern hardwoods and influencing deer browse. MSc Thesis, SUNY College of Environmental Science and Forestry, Syracuse, NY. 142 p.
82. KELTY, M.J. 1986. Shelterwood cutting as an even-aged reproduction method. P. 128-142 in Managing northern hardwoods: Proc. of a silvicultural symposium, Nyland, R.D. (ed.). SUNY Coll. Environ. Sci. and For., Fac. of For. Misc. Publ. No. 13 (ESF 87-002). SAF Publ. No. 87-03.
83. KELTY, M.J., AND R.D. NYLAND. 1981. Regenerating Adirondack northern hardwoods by shelterwood cutting and control of deer density. J. For. 79(1):22-26.
84. KENEFIC, L.S., AND R.D. NYLAND. 1999. Sugar maple height-diameter and age-diameter relationships in an uneven-aged northern hardwood stand. North. J. Appl. For. 16(1):43-47.
85. KENEFIC, L.S., AND R.D. NYLAND. 2002. Habitat diversity in uneven-aged northern hardwood stands: A case study. USDA For. Serv. Res. Pap. NE-714.
86. KIRKWOOD, R.C., P. VEERASEKARAN, AND W.W. FLETCHER. 1982. Studies on the mode of action of asulam in bracken (Pteridium aquilinum L. Kuhn). Proc. Roy. Soc. Edin. 81B:85-96.
87. LAWSON, G.J., T.V. CALLAGHAN, AND R. SCOIT. 1984. Renewable energy from plants: Bypassing fossilization. Adv. Ecol. Res. 14:57-114.
88. LEAK, W.B. 1988. Effects of weed species on northern hardwood regeneration in New Hampshire. North. J. Appl. For. 5(4):235-237.
89. LECK, M.A., AND R.L. SIMPSON. 1987. Spore bank of a Delaware river freshwater tidal wetland. Bull. Torr. Bot. Club. 114(1):1-7.
90. LYON. J., AND W.E. SHARPE. 1996. Hay-scented fern interference with growth of northern red oak seedlings. Tree Phys. 16:923-932.
91. MACCAMMON, G.W. 1938. Bracken fern: Its silvicultural aspects in the Northeastern forest. MF Thesis, New York College of Forestry at Syracuse University, Syracuse, NY. 95 p.
92. MACLEOD, A. 1982. The bracken problem in the Highlands and Islands. Proc. Roy. Soc. Edin. 81B:11-18.
93. MAQUIRE, D.A., AND R.T. FORMAN. 1983. Herb cover effects on tree seedling patterns in a mature hemlock-hardwood forest. Ecology 64(6):1367-1380.
94. MARQUIS, D.A. 1978. The effect of environmental factors on the natural regeneration of cherry-ash-maple forests in the Allegheny Plateau region of the eastern United States. P. 90-9 in Proc. Establishment and treatment of high-quality hardwood forests in the temperate climatic region, Fevillus Precieux. Nancy-Champenoux, France, Sept. 1-15, 1978. Int. Union of For. Res. Org., Div. 1, Nancy-Champenoux, France.
95. MARQUIS, D.A. 1980. Black cherry - maple 28. P. 32-33 in Forest cover types of the United States and Canada, Eyre, F.H. (ed.). Society of American Foresters, Washington, DC.
96. MARQUIS, D.A. 1981. Effect of deer browsing on timber production in Allegheny hardwood forests of northwestern Pennsylvania. USDA For. Serv. Res. Pap. NE-475.
97. MARQUIS, D.A., AND T.J. GRISEZ. 1978. The effect of deer exclosures on the recovery of vegetation in failed clearcuts on the Allegheny Plateau. USDA For. Serv. Res. Note. NE-270.
98. MARQUIS, D.A., R.L. ERNST, AND S.L. STOUT. 1992. Prescribing silvicultural treatments in the hardwood stands of the Alleghenies (revised). USDA For. Ser. Gen. Tech. Rep. NE-96.
99. MARQUIS, D.A., T.J. GRISEZ, J.C. BJORKBOM, AND B.A. ROACH. 1975. Interim guide to regeneration of Allegheny hardwoods. USDA For. Ser. Gen. Tech. Rep. NE-19.
100. MARRS, R.H., S.W. JOHNSON, AND M.G. LEDUC. 1998. Control of bracken and restoration of heathland. VI. The regeneration of the heathland community after 18 years of continued bracken control or 6 years of control followed by recovery. J. Appl. Ecol. 35:857-870.
101. MARTIN, D.J. 1976. Control of bracken. Bot. J. Linn. Soc. 73:241-246.
102. MCCORMICK, L.H., AND T.W. BOWERSOX. 1997. Grass or fern competition reduce growth and survival of planted tree seedlings. P. 286-293 in Proc. of the 11th central hardwood conference. USDA For. Serv. Gen. Tech. Rep. NC-188.
103. MCCULLOCH, W.F. 1942. The role of bracken fern in Douglas-fir regeneration. Ecology 23(4):484-485.
104. MCDONALD, P.M., C.S. ABBOTT, AND G.O. FIDDLER. 1999. Development of a shrub - fern - ponderosa pine community eleven years after site preparation and release. West. J. Appl. For. 14(4):194-199.
105. MCGEE, G.G., D.J. LEOPOLD, AND R.D. NYLAND. 1995. Understory response to springtime prescribed fire in two New York transition-oak forests. For. Ecol. Manage. 76(1-3):149-168.
106. MILBERG, P. 1991. Fem spores in a grassland soil. Can. J. Bot. 69:831-834.
107. MONTGOMERY, J.D., AND D.E. FAIRBROTHERS. 1992. New Jersey ferns and fern-allies, Rutgers University Press, New Brunswick, NJ.
108. NYLAND, R.D., A.L. BASHANT, K.K. BOHN, AND J.M. VEROSTEK. 2006a. Interference to hardwood regeneration in northeastern North America: Ecological characteristics of American beech, striped maple, and hobblebush. North. J. Appl. For. 23(1):53-61.
109. NYLAND, R.D., A.L. BASHANT, K.K. BOHN, AND J.M. VEROSTEK. 2006b. Interference to hardwood regeneration in Northeastern North America: Controlling effects of American beech, striped maple, and hobblebush. North. J. Appl. For. 23(2):122-132.
110. PAGE, C.N. 1985. The strategies of Bracken as a permanent ecological opportunist. P. 173-181 in Bracken: Ecology, land use and control technology. Proc. of the international conference - Bracken '85, Smith, R.T., and J.A. Taylor (eds.), Parthenon Publishing, Carnforth, England.
111. PAGE, C.N. 1979. Experimental aspects of tern ecology. P. 552-589 in The experimental biology of ferns, Dyer, A.F. (ed.), Academic Press, London, UK.
112. PENROD, K.A. 1994. Distribution, dispersal and abundance of hayscented fern spores in mixed hardwood stands. MSc thesis, Pennsylvania State Univ., University Park, PA.
113. PENROD, K.A., AND L.H. MCCORMICK. 1996. Abundance of viable hayscented fern spores germinated from hardwood forest soils at various distances from a source. Am. Fern J. 86(3):69-79.
114. PEST MANAGEMENT REGULATORY AGENCY. 2002. Re-evaluation of selected carbamate pesticides. Alternative Strategies and Regulatory Affairs Division, Pest Management Regulatory Agency, Health Canada, REV2002-06.
115. PEST MANAGEMENT REGULATORY AGENCY. 2003. Pest control products under re-evaluation: Discontinuation of agricultural products registered under the Pest Control Products Act and Proposed Changes to Maximum Limits under the Food and Drugs Act. Alternative Strategies and Regulatory Affairs Division, Pest Management Regulatory Agency, Health Canada, REV2003-05.
116. PLACE, I.C.M. 1952. The influence of bracken fern on establishment of spruce and fir seedlings. Can. Dept. Res. Dev. For. Br. Silvi. Leafl. 70.
117. POEL, L.W. 1961. Soil aeration as a limiting factor in the growth of Pteridium aquilinum (L.) Kuhn. J. Ecol. 49(1):107-111.
118. FREEST, D.S. 1975. Review of and observations on current methods of bracken control in forestry. P. 43-48 in Proc. of the 28th New Zealand weed and pest control conference. Hastings.
119. RADOSEVICH, S.R., W.H. BROOKS, D.R. ADAMS, W.B. MCHENRY. 1979. Bracken fern control with several herbicides. International Pest Control May/June:67.
120. RAYNOR, G.S., E.C. OGDEN, AND J.V. HAYES. 1976. Dispersion of fern spores into and within a forest. Rhodora 78:473-487.
121. RYMER, L. 1976. The history and ethnobotany of bracken. Bot. J. Linn. Soc. 73:151-176.
122. SAGE JR. R.W., W.F. PORTER, AND H.B. UNDERWOOD. 2003. Windows of opportunity: white-tailed deer and the dynamics of northern hardwood forests of the northeastern US. J. Nat. Cons. 10:213-220.
123. SANDBERG, C.L., W.F. MEGGITT, AND D. PENNER. 1978. Effect of diluent volume and calcium on glyphosate phytotoxicity. Weed Sci. 26:476-479.
124. SCHNELLER, J.J. 1988. Spore bank, dark germination and gender determination in Athyrium and Dryopteris. Results and implications for population biology of Pteridiophyta. Bot. Helvatica 98(1):77-86.
125. SCHREINER, I., D. NAFUS, AND D. PIMENTEL. 1984. Frequency of cyanogenesis in bracken in relation to shading and winter severity. Am. Fern J. 74(2):51-55.
126. SHEA, P.J., AND D.R. TUPY. 1984. Reversal of cation-induced reduction in glyphosate activity with EDTA. Weed Sci. 32:802-806.
127. SICCAMA, T.G., F.H. BORMANN, AND G.E. LIKENS. 1970. Hubbard brook ecosystem study: Productivity, nutrients, and phytosociology of the herbaceous layer. Ecol. Monog. 40:389-402.
128. SMITH, D.M., B.C. LARSON, M.J. KELTY, P. ASTON, AND B.C. LARSON, 1997. The Practice of silviculture: Applied forest ecology, 9th Ed. John Wiley & Sons, Inc., New York, NY.
129. SMITH, H.C. 1980. Beech - sugar maple. P. 33-34 in Forest cover types of the United States and Canada, Eyre. F.H. (ed.). Society of American Foresters, Washington, DC.
130. SMITH, R.T. 1990. Possible causes of natural decline in bracken (Pteridium aquilinum), P. 63-69 in Bracken biology and management. Proc. of the international conference - Bracken 99. Thomson, J.A., and R.T. Smith. (eds.). Australian Institute of Agricultural Science, Hawthorn, Victoria.
131. SOEDER, R.W. 1985. Fern constituents: including occurrence, chemotaxonomy, and physical activity. Bot. Rev. 51(4):442-536.
132. STAHLMAN, P.W., AND W.M. PHILLIPS. 1979. Effects of water quality and spray volume on glyphosate phytotoxicity. Weed Sci. 27:38-41.
133. STEWART, R.E. 1975. Allelopathic potential of western bracken. J. Chem. Ecol. 1(2):161-169.
134. STEWART, R.E., A.W. COOLEY, AND A. GUARDIGLI. 1979. Asulam controls western bracken (Pteridium aquilinum) in forestland in western Oregon. Weed Sci. 27:589-594.
135. STROMAYER, K.A.K., AND R.J. WARREN. 1997. Are overabundant deer herds in the eastern United States creating alternate stable states in forest plant communities? Wildl. Soc. Bull. 25(2):227-234.
136. THOMSON, J.A., C. WILLOUGHBY, AND C. M. SHEARER. 1985. Factors affecting the distribution, abundance and economic status of bracken (Pteridium aquilinum) in New South Wales. P. 109-119 in Bracken: Ecology, land use and control technology. Smith, R.T., and J.A. Taylor (eds.). Proc of the international conference - Bracken '85. Parthenon Publishing, Carnforth, England.
137. TILGHMAN, N.G. 1989. Impacts of white-tailed deer on forest regeneration in northwestern Pennsylvania. J. Wildl. Manage. 53(3):524-532.
138. TORKILDSEN, G.B. 1950. The cause of poor reproduction in forests with undergrowth of bracken. Blyttia 8:160-164.
139. TRYON JR. R.M. 1941. A revision of the genus Pteridium. Rhodora 43(505-506):1-31, 37-67.
140. UNDERWOOD, L.M.1881. Our native ferns and how to study them. Leader Publ. Co., Bloomington, IL.
141. VEERASEKARAN, P., R.C. KIRKWOOD, AND W.W. FLETCHER. 1978. Studies on the mode of action of asulam in bracken III. Long-term control of bracken. Weed Res. 18:315-319.
142. VENCILL, W.K. (ED.). 2002. Herbicide handbook, 8th Ed. Weed Sci. Soc. Am., Lawrence, KS.
143. WALTERS, R.S., AND R.D. NYLAND. 1989. Clearcutting central New York northern hardwood stands. North. J. Appl. For. 6(2):75-78.
144. WATT, A.S. 1950. Contributions to the ecology of bracken (Pteridium aquilinum) V. Bracken and frost. New Phytol. 49:308-327.
145. WATT, A.S. 1976. Ecological status of bracken. Bot. J. Linn. Soc. 73:217-239.
146. WILLIAMS, G.H. 1977. Qualitative effects of asulam and glyphosate on swards dominated by bracken (Pteridium aquilinum (L.) Kuhn). J. Br. Grass. Soc. 32:149-155.
147. WILLIAMS, G.H., AND A. FOLEY. 1976. Seasonal variations in the carbohydrate content of bracken. Bot. J. Linn. Soc. 73:87-93.