Root architecture and allocation patterns of eight native tropical species with different successional status used in open-grown mixed plantations in Panama

Coll, Lluís; Potvin, Catherine; Messier, Christian; Delagrange, Sylvain

doi:10.1007/s00468-008-0219-6

Cited by 43 publications

(36 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Mono-specific plantation forests managed with complete weeding are thus an interesting model to gain insight into the relationships between vertical above-and belowground growth rates for trees established on deep soils (Coll et al 2008). The area occupied by plantation forests has been expanding at an annual rate of 2.0-2.5 million ha over recent decades (FAO 2006).…”

Section: Introductionmentioning

confidence: 99%

Almost symmetrical vertical growth rates above and below ground in one of the world's most productive forests

et al. 2011

View full text Add to dashboard Cite

Abstract. Whilst the relationships between growth strategies and leaf traits are well established in functional plant ecology, little attention has been paid to root traits in very deep soil layers. The objective of our study was to compare the vertical velocity of the above-and belowground exploration of the environment for one of the fastest-growing tree species. Fine roots were studied in a chronosequence of intensively-managed Eucalyptus plantations established on highly weathered soils. Here we show that the root front depth was accurately predicted at 85% of mean tree height for stands ,20 m in height, in the absence of any physical or chemical barrier. Tree height and root front growth velocities peaked at 0.59 and 0.55 m month À1 respectively 9-10 months after planting, and decreased steadily thereafter. Fast root front displacement might provide a competitive advantage to fast-growing species in forests established on deep soils. Our study may contribute to the debate on the environmental impact of short-rotation plantation forests in the Tropics.

show abstract

Section: Introductionmentioning

confidence: 99%

Almost symmetrical vertical growth rates above and below ground in one of the world's most productive forests

et al. 2011

View full text Add to dashboard Cite

show abstract

“…Similarly, greater niche exploitation occurs in mixtures with distinct foliar phenology of deciduous and E-mail: Anna.Richards@csiro.au evergreen tree species (Kelty 1992) and in mixtures with complementary root structures and nutrient requirements (Ewel 1986, Lamb and Lawrence 1993, Haggar and Ewel 1997, Rothe and Binkley 2001. Rooting niche complementarity for both water and nutrients has been explored extensively in agroforestry systems (Ong andLeakey 1999, Schroth 1999), but is less commonly applied to tree mixtures (Coll et al 2008). Overall, mechanisms based on complementarity imply that productivity in mixtures can increase only when the proportion of resources captured, such as light or nutrients, increases or when individuals become more efficient at using the available resources (Binkley et al 2004).…”

Section: Introductionmentioning

confidence: 99%

Complementary resource use by tree species in a rain forest tree plantation

Richards

Schmidt

2010

Ecological Applications

View full text Add to dashboard Cite

Abstract. Mixed-species tree plantations, composed of high-value native rain forest timbers, are potential forestry systems for the subtropics and tropics that can provide ecological and production benefits. Choices of rain forest tree species for mixtures are generally based on the concept that assemblages of fast-growing and light-demanding species are less productive than assemblages of species with different shade tolerances. We examined the hypothesis that mixtures of two fast-growing species compete for resources, while mixtures of shade-tolerant and shade-intolerant species are complementary. Ecophysiological characteristics of young trees were determined and analyzed with a physiology-based canopy model (MAESTRA) to test species interactions. Contrary to predictions, there was evidence for complementary interactions between two fast-growing species with respect to nutrient uptake, nutrient use efficiency, and nutrient cycling. Fast-growing Elaeocarpus angustifolius had maximum demand for soil nutrients in summer, the most efficient internal recycling of N, and low P use efficiency at the leaf and whole-plant level and produced a large amount of nutrient-rich litter. In contrast, fast-growing Grevillea robusta had maximum demand for soil nutrients in spring and highest leaf nutrient use efficiency for N and P and produced lownutrient litter. Thus, mixtures of fast-growing G. robusta and E. angustifolius or G. robusta and slow-growing, shade-tolerant Castanospermum australe may have similar or even greater productivity than monocultures, as light requirement is just one of several factors affecting performance of mixed-species plantations. We conclude that the knowledge gained here will be useful for designing large-scale experimental mixtures and commercial forestry systems in subtropical Australia and elsewhere.

show abstract

“…The contribution of this root mass is known to be variable, but significant (e.g. Westman and Rogers, 1977;Resh et al, 2003;Coll et al, 2008) and hence our values of below-ground C are under-estimates of total below-ground C. We did not attempt to sample this below-ground 'root ball' biomass pool due to the destructive nature of such sampling, nor did we estimate this pool as there is little available root biomass data for sub-tropical Pinus sp. forests and adjacent native vegetation.…”

Section: Soil Processing and Analysismentioning

confidence: 99%

Conversion of sub-tropical native vegetation to introduced conifer forest: Impacts on below-ground and above-ground carbon pools

Lewis

Smith

Hogg

et al. 2016

Forest Ecology and Management

View full text Add to dashboard Cite

a b s t r a c tLand-use change can have a major influence on soil organic carbon (SOC) and above-ground C pools. We assessed a change from native vegetation to introduced Pinus species plantations on C pools using eight paired sites. At each site we determined the impacts on 0-50 cm below-ground (SOC, charcoal C, organic matter C, particulate organic C, humic organic C, resistant organic C) and above-ground (litter, coarse woody debris, standing trees and woody understorey plants) C pools. In an analysis across the different study sites there was no significant difference (P > 0.05) in SOC or above-ground tree C stocks between paired native vegetation and pine plantations, although significant differences did exist at specific sites. SOC (calculated based on an equivalent soil mass basis) was higher in the pine plantations at two sites, higher in the native vegetation at two sites and did not differ for the other four sites. The site to site variation in SOC across the landscape was far greater than the variation observed with a change from native vegetation to introduced Pinus plantation. Differences between sites were not explained by soil type, although tree basal area was positively correlated with 0-50 cm SOC. In fact, in the native vegetation there was a significant linear relationship between above-ground biomass and SOC that explained 88.8% of the variation in the data. Fine litter C (0-25 mm diameter) tended to be higher in the pine forest than in the adjacent native vegetation and was significantly higher in the pine forest at five of the eight paired sites. Total litter C (0-100 mm diameter) increased significantly with plantation age (R 2 = 0.64).Carbon stored in understorey woody plants (2.5-10 cm DBH) was higher in the native vegetation than in the adjacent pine forest. Total site C varied greatly across the study area from 58.8 Mg ha À1 at a native heathland site to 497.8 Mg ha À1 at a native eucalypt forest site. Our findings suggest that the effects of change from native vegetation to introduced Pinus sp. forest are highly site-specific and may be positive, negative, or have no influence on various C pools, depending on local site characteristics (e.g. plantation age and type of native vegetation). Crown

show abstract

Root architecture and allocation patterns of eight native tropical species with different successional status used in open-grown mixed plantations in Panama

Cited by 43 publications

References 62 publications

Almost symmetrical vertical growth rates above and below ground in one of the world's most productive forests

Almost symmetrical vertical growth rates above and below ground in one of the world's most productive forests

Complementary resource use by tree species in a rain forest tree plantation

Conversion of sub-tropical native vegetation to introduced conifer forest: Impacts on below-ground and above-ground carbon pools

Contact Info

Product

Resources

About