BOREAL FOREST
; PICEA-MARIANA
; JACK PINE
; STAND DISTURBANCES
; FIRE BEHAVIOR
; SEVERITY
; CLIMATE
; MODEL
; REGENERATION
; PRODUCTIVITY
WOS学科分类:
Forestry
WOS研究方向:
Forestry
英文摘要:
It has recently become clear that the regeneration density of serotinous species within a burned area declines with local fire intensity. It is assumed that this occurs because variation in local fire intensity leads to variation in incident heat fluxes and, ultimately, seed necrosis. We argue here that this same relationship between incident heat flux and seed necrosis is important at the scale of individual plant crowns. Using Picea mariana (Mill.) B.S.P. (black spruce), we show that postfire seed viability increases with crown height, depth into the crown, and angle from wind direction (with the windward side enjoying greater viability). All three effects are what one would expect given the physics of buoyant plumes, interactions of moving fire lines with wake flow around cylinders, and heat transfer in porous bodies such as a tree crown. We conclude by discussing the broader consequences of cone cluster size and global change on regeneration in serotinous species.
1.Univ Quebec Abitibi Temiscamingue, Inst Rech Forets, 445 Boul Univ, Rouyn Noranda, PQ J9X 5E4, Canada 2.Humboldt State Univ, Dept Forestry & Wildland Resources, 1 Harpst St, Arcata, CA 95521 USA 3.Univ British Columbia, Dept Bot, Vancouver, BC V6T 1Z4, Canada 4.Univ British Columbia, Biodivers Res Ctr, Vancouver, BC V6T 1Z4, Canada 5.Univ Arizona, Biosphere 2, 1041 E Lowell St,BSW 310, Tucson, AZ 85721 USA 6.Univ Arizona, Dept Ecol & Evolutionary Biol, 1041 E Lowell St,BSW 310, Tucson, AZ 85721 USA 7.Laurentian Forestry Ctr, Canadian Forest Serv, Nat Resources Canada, 1055 Rue PEPS,POB 10380, Stn St Foy, PQ G1V 4C7, Canada 8.Minist Forets Faune & Parcs, Direct Rech Forestiere, Quebec City, PQ G1P 3W8, Canada 9.Ouranos Climate Change Consortium, Montreal, PQ H3A 1B9, Canada 10.Univ Quebec Montreal, Ctr Etud Foret, CP 8888 Succursale A, Montreal, PQ H3C 3P8, Canada 11.Univ Quebec Montreal, Chaire Ind Amenagement Forestier Durable, CP 8888 Succursale A, Montreal, PQ H3C 3P8, Canada
Recommended Citation:
Splawinski, T. B.,Greene, D. F.,Michaletz, S. T.,et al. Position of cones within cone clusters determines seed survival in black spruce during wildfire[J]. CANADIAN JOURNAL OF FOREST RESEARCH,2019-01-01,49(2):121-127