9. A Comparative Review of Forest Dynamics
205
likely to have a significant ecological impact at ecotones which are mainly
controlled by low temperatures. Similarly, ecotones mainly controlled by
moisture availability (i.e., at their eastern and equatorward limits) are
likely to be greatly affected by changes in fire regimes which will inevitably
accompany global warming . Given the relatively minor role of natural
fires over most of the distribution of temperate rainforests, climatically
induced increases in fire occurrence are likely to have major influences on
the structure, composition, and functioning of these ecosystems.
Acknowledgments. Support for the research on which this review is based
was provided by the Council on Research and Creative Work of the
University of Colorado , the National Geographic Society, the USDA
Forest Service Pacific Northwest Research Station, the Ecological Processes Program, and the National Science Foundation. Some of the
material on South America was drawn from collaborative work in progress
with Thomas Kitzberger, Alan Rebertus, and Ricardo Villalba, whose
contributions are gratefully acknowledged. The manuscript was considerably improved by comments of the reviewers K.P. Lertzman and T.A.
Spies.
References
Agee , J.K. 1990. The historical role of fire in Pacific Northwest forests. In J.D.
Walstad , S. Rado sevich, and D . Sandberg (eds.) , Natural and Prescribed
Fire in Pacific Northwest Forests (pp. 25-38). Corvallis, OR : Oregon State
University Press.
Agee , J .K. 1991. Fire history of Douglas-fir forests in the Pacific Northwest.
In L.F . Ruggiero, K.B. Aubry , A.B . Carey , and M.H . Huff (eds.) , Wildife
and Vegetation of unmanaged Douglas-fir for ests (pp . 25-33) . Portland. OR :
U .S.D.A., Forest Service, Pacific Northwest Research Station, General Technical Report PNW-GTR-285.
Agostini , A.M. 1941. Andes Patagonicos: Viajes de Exploracion a la Cordillera
Patagonica Austral. Buenos Aires: Imprenta de Luis L. Gotelli.
Alaback , P.B. 1982. Dynamics of under story biomass in Sitka spruce-western
hemlock forests of southeast Alaska . Ecology , 63, 1932-1948.
Alaback , P.B. 1991. Comparative ecology of temperate rainfore sts of the
Americas along analogous climatic gradients. Rev Chil His Nat, 64, 399-412.
Alaback, P.B ., and Juday, G.P. 1989. Structure and composition of old-growth
forests in the Research Natural Areas of Southeast Alaska. J Nat Areas
As soc, 9, 27-39.
Alaback , P.B. , and Sidle, R.e. 1986. Biomass, structure and nutrients of riparian
vegetation on a small watershed on Chichagof Island , southeast Alaska .
In D .L. Correll (ed.) , Watershed Research Perspectives. Proceedings of the
Symposium , June 10-12, 1985 (pp. 135-165). Edgewater, MD : Smithsonian
Environmental Research Center.
Alaback, P.B., and Tappeiner II , J.e. 1991. Respon se of western hemlock (Tsuga
heterophllya) and early huckleberry (Vaccinium ovalifolium) seedlings following forest windthrow. Can J For Res , 21, 534-539.
Almeyda, A .E ., and Saez F.S . 1958. Recopilacion de Datos Climaticos de Chile y
Mapas Sinopticos Respectivos. Santiago: Ministerio de Agricultura.
205
likely to have a significant ecological impact at ecotones which are mainly
controlled by low temperatures. Similarly, ecotones mainly controlled by
moisture availability (i.e., at their eastern and equatorward limits) are
likely to be greatly affected by changes in fire regimes which will inevitably
accompany global warming . Given the relatively minor role of natural
fires over most of the distribution of temperate rainforests, climatically
induced increases in fire occurrence are likely to have major influences on
the structure, composition, and functioning of these ecosystems.
Acknowledgments. Support for the research on which this review is based
was provided by the Council on Research and Creative Work of the
University of Colorado , the National Geographic Society, the USDA
Forest Service Pacific Northwest Research Station, the Ecological Processes Program, and the National Science Foundation. Some of the
material on South America was drawn from collaborative work in progress
with Thomas Kitzberger, Alan Rebertus, and Ricardo Villalba, whose
contributions are gratefully acknowledged. The manuscript was considerably improved by comments of the reviewers K.P. Lertzman and T.A.
Spies.
References
Agee , J.K. 1990. The historical role of fire in Pacific Northwest forests. In J.D.
Walstad , S. Rado sevich, and D . Sandberg (eds.) , Natural and Prescribed
Fire in Pacific Northwest Forests (pp. 25-38). Corvallis, OR : Oregon State
University Press.
Agee , J .K. 1991. Fire history of Douglas-fir forests in the Pacific Northwest.
In L.F . Ruggiero, K.B. Aubry , A.B . Carey , and M.H . Huff (eds.) , Wildife
and Vegetation of unmanaged Douglas-fir for ests (pp . 25-33) . Portland. OR :
U .S.D.A., Forest Service, Pacific Northwest Research Station, General Technical Report PNW-GTR-285.
Agostini , A.M. 1941. Andes Patagonicos: Viajes de Exploracion a la Cordillera
Patagonica Austral. Buenos Aires: Imprenta de Luis L. Gotelli.
Alaback , P.B. 1982. Dynamics of under story biomass in Sitka spruce-western
hemlock forests of southeast Alaska . Ecology , 63, 1932-1948.
Alaback , P.B. 1991. Comparative ecology of temperate rainfore sts of the
Americas along analogous climatic gradients. Rev Chil His Nat, 64, 399-412.
Alaback, P.B ., and Juday, G.P. 1989. Structure and composition of old-growth
forests in the Research Natural Areas of Southeast Alaska. J Nat Areas
As soc, 9, 27-39.
Alaback , P.B. , and Sidle, R.e. 1986. Biomass, structure and nutrients of riparian
vegetation on a small watershed on Chichagof Island , southeast Alaska .
In D .L. Correll (ed.) , Watershed Research Perspectives. Proceedings of the
Symposium , June 10-12, 1985 (pp. 135-165). Edgewater, MD : Smithsonian
Environmental Research Center.
Alaback, P.B., and Tappeiner II , J.e. 1991. Respon se of western hemlock (Tsuga
heterophllya) and early huckleberry (Vaccinium ovalifolium) seedlings following forest windthrow. Can J For Res , 21, 534-539.
Almeyda, A .E ., and Saez F.S . 1958. Recopilacion de Datos Climaticos de Chile y
Mapas Sinopticos Respectivos. Santiago: Ministerio de Agricultura.