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Amount and distribution of coarse woody debris in pine ecosystems of north-western Spain, Russia and the United States

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Title Amount and distribution of coarse woody debris in pine ecosystems of north-western Spain, Russia and the United States
Names Herrero, Celia (creator)
Krankina, Olga (creator)
Monleon, Vicente J. (creator)
Bravo, Felipe (creator)
Date Issued 2013-10-28 (iso8601)
Note To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by the Italian Society of Silviculture and Forest Ecology and can be found at: http://www.sisef.it/iforest/.
Abstract The quantity and characteristics of coarse woody debris (CWD) were examined
in four distinct pine ecosystems of north-western (NW) Spain, NW Russia and
the NW USA. The average CWD volume and biomass ranged from 3.76 m³ ha⁻¹,
1.55 Mg ha⁻¹ in pine plantations in NW Spain to 24.86 m3 ha⁻¹, 6.69 Mg ha⁻¹
in Scots pine forest in NW Russia to 55.35 m³ ha⁻¹, 20.38 Mg ha⁻¹ and 77.04 m³
ha⁻¹, 28.84 Mg ha⁻¹ in ponderosa and lodgepole pine forests in the NW USA. Despite
differences in species, ecological conditions and management histories, in
all four ecosystems the mean snag volume was less than that of logs, most of
the CWD mass was in an intermediate degree of decay, and mature stands had
the greatest amount of CWD mass, followed by middle-age and then young
stands. The CWD ratio (ratio of dead to live wood volume) ranged from 2.8% to
126.6%, depending on pine ecosystem and stand age, and was influenced by
the type of natural and human disturbance. The difference in CWD amount and
distribution among the regions studied reflected differences in disturbance history
and management practices. Only in NW USA was the sample size large
enough to examine the effect of disturbance type on CWD amount and distribution.
There, fire and insect damage were found to considerably influence the
amount of CWD in both lodgepole and ponderosa pine forests. Comparison of
how different factors affect the amount and distribution of CWD in different
ecosystems could be useful in developing ecologically sustainable forest management
guidelines.
Genre Article
Topic Disturbance
Identifier Herrero, C., Krankina, O., Monleon, V. J., & Bravo, F. (2013). Amount and distribution of coarse woody debris in pine ecosystems of north-western Spain, Russia and the United States. iForest-Biogeosciences and Forestry, 7, 53-60. doi:10.3832/ifor0644-006

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