Basal area growth curves for Pinus patula in two areas of the Calamuchita Valley, Córdoba, Argentina

Verzino, Graciela; Ingaramo, Patricia; Joseau, Jacqueline; Astini, Eduardo; Rienzo, Julio Di; Dorado, Mónica

doi:10.1016/s0378-1127(99)00065-1

Cited by 13 publications

(14 citation statements)

References 3 publications

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“…In addition, as one of the most important concepts of sustained management, the MCD can be calculated according to a dendrochronological analysis of tree growth. Although most studies in the tropics or subtropics mainly focus on a volume-based MCD [52,53,[59][60][61], the MCD can also be calculated from BAIs [62][63][64]. However, the use of volume-based CAI and MAI is often constrained by height measurements and the existence of significant age-diameter and diameter-height relationships, as reported by Schöngart [61].…”

Section: Evaluation Of the Mean Diameter And Bramentioning

confidence: 99%

Diameter Growth, Biological Rotation Age and Biomass of Chinese Fir in Burning and Clearing Site Preparations in Subtropical China

Zhang

Meng

Liu

2016

Forests

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Sustained forest management of Cunninghamia lanceolata (Chinese fir) plantations in subtropical China is restricted by the limited availability of quantitative data. This study combines inventory data and tree-ring analysis of Chinese fir from natural and plantation forests that were subjected to controlled burning or brush clearing site preparations. Inter-annual variation of Chinese fir tree-ring widths were measured for the controlled burning, brush clearing and natural forest sites. The mean annual diametric growth of Chinese fir was 0.56 cm·year −1 for the natural forest, 0.80 cm·year −1 for the brush clearing site and 1.10 cm·year −1 for the controlled burning site. The time needed to reach the minimum cutting/logging diameter of 15 cm was 14 years in the controlled burning site, 19 years in the brush clearing site and >40 years in the natural forest. The biological rotation ages for the burning, cutting and natural forest sites were 15, 26 and >100 years, respectively. The total aboveground biomasses for the burning and clearing sites were 269.8 t·ha −1 and 252 t·ha −1 , respectively. These results suggest that the current 25-year cutting cycle greatly underestimates the growth rate of Chinese fir plantations.

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Section: Evaluation Of the Mean Diameter And Bramentioning

confidence: 99%

Diameter Growth, Biological Rotation Age and Biomass of Chinese Fir in Burning and Clearing Site Preparations in Subtropical China

Zhang

Meng

Liu

2016

Forests

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“…However, early in the twentieth century, large quantities of alien woody species were introduced in the eastern range of the mountains and the neighbor valley, and Pinus spp. plantations were promoted by immigrants from Germany, Switzerland and Czech Republic attempting to recreate their homeland in a landscape where native forests had almost disappeared (Verzino et al 1999;Freytes de Vilanova 2006). In contrast, in the western valley, the introduction of alien species was almost absent until the late twentieth century, and even then it was not as massive as in the eastern valley.…”

Section: Field Data Collectionmentioning

confidence: 99%

“…Additionally, as different land use histories can promote different timings of invasion and propagule pressure (Parks et al 2005;Pauchard and Shea 2006;Wilson et al 2007), we predict that alien woody species will be more abundant in the eastern side of the Córdoba mountain range. This side of the mountain has a longer and more intensive history of alien species introduction and forestry aided by European settlers than the western range (Verzino et al 1999;Freytes de Vilanova 2006). At last, given the early stage of invasion, we expect to find patterns of distribution best defined by propagule pressure indicators rather than by abiotic factors or indicators of biotic interactions or disturbance.…”

Section: Introductionmentioning

confidence: 99%

Factors associated with woody alien species distribution in a newly invaded mountain system of central Argentina

et al. 2010

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To help determine the major factors associated with alien plant in a newly invaded mountain range; we analyzed the distribution patterns of woody alien species along the altitudinal gradient of the Córdoba mountains, in relation to biotic, abiotic and anthropogenic factors. We selected 303 plots using a Geographic Information System (GIS) covering all the variability of these factors. In the field we registered woody alien occurrence in these 303 and in 303 additional neighbor plots. We used 12 biotic, abiotic and anthropogenic variables from the GIS to predict the probability of presence of alien species through a logistic model. Then, we analyzed if neighbor alien occurrences could explain some additional variance. We created a probability map with 4 categories of alien occurrence which was then validated by new field sampling. Occurrence of woody aliens was highest in the eastern slope (with longer history of species introduction), at low altitudes, near sources of propagule pressure (human settlements, roads and neighbor sites with established alien plants), and associated to sheltered topographies. In the upper belt of the Córdoba Mountains woody invasion is incipient and thus in a transient stage. Accordingly, propagule pressure seems to be the major factor at play, while the relevance of disturbance and biotic interactions is less clear.

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“…Pinus patula is native in the Sierra Madre Oriental in Mexico (Perry 1991;Richardson and Rundel 1998) but is widely planted in warm temperate, Mediterranean, subtropical, and tropical lowland forests as well as in humid mountain and dry afromontane forests because of fast growth rate Verzino et al 1999;Immel 2002;van Wesenbeeck et al 2003). Pinus patula forms relatively open stands in plantations and naturalized sites (Lemeniha et al 2004;Yirdaw and Luukkanen 2004).…”

Section: Study Speciesmentioning

confidence: 99%

Size‐Dependent Variation in Shoot Light‐Harvesting Efficiency in Shade‐Intolerant Conifers

Niinemets¹,

Tobias

Cescatti

et al. 2006

International Journal of Plant Sciences

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Shoots and foliage elements of shade-intolerant conifers strongly vary in size, but the effects of size on shoot light-harvesting efficiency have not been quantified. We investigated shoot adaptation to seasonal average integrated quantum flux density in gymnosperms Pinus palustris Mill., P. patula Schlect. & Cham., and P. radiata D. Don. and angiosperm Casuarina glauca Sieb. ex Spreng. In addition, P. sylvestris L., sampled from infertile and fertile sites, and P. taeda L. were included to test for general correlations among shoot architecture and size. All studied species possess needle-like photosynthetic elements. A shoot model was fitted to the data to separate the determinants of shoot light-harvesting efficiency. The model estimated shoot light harvesting on the basis of angular distribution of foliage surface areas, degree of spatial clumping, foliage area density in shoot volume, and beam path length in shoot volume. Increases in irradiance primarily led to greater foliage aggregation, greater foliage area density in shoot volume, and to a minor degree, to changes in foliage area angular distribution. Greater foliage aggregation resulted in lower efficiency of light harvesting but greater investment of foliar biomass in high light where the photosynthetic returns are greater. The species behave similarly except that the light-harvesting characteristics of P. patula, which has long, strongly bending needles, were independent of light. In all species, the shoots were larger in higher irradiance, and the fraction of biomass in shoot axis increased with increasing irradiance, indicating greater costs for light harvesting in high light. There were further significant species differences in light-harvesting efficiency that were linked to differences in foliage and shoot size. Foliage element length varied between 1.1 and 31.4 cm and shoot axis length between 1.2 and 36.5 cm among the species, leading to 4 orders of magnitude variation in shoot cylinder volume and three orders of magnitude variation in foliage area density (r); r decreased with increasing foliage element length and shoot volume. The degree of foliage clumping scaled positively with r and negatively with foliage element length. Foliage clumping was positively associated with foliage dry mass to shoot silhouette area ratio, signifying a trade-off between efficient light harvesting and large photosynthetic biomass accumulation. These data demonstrate a general increase of light-harvesting efficiency with increasing length of foliage elements, but they also demonstrate that this increase is limited by enhanced bending of longer foliage elements and by augmented support costs.

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Basal area growth curves for Pinus patula in two areas of the Calamuchita Valley, Córdoba, Argentina

Cited by 13 publications

References 3 publications

Diameter Growth, Biological Rotation Age and Biomass of Chinese Fir in Burning and Clearing Site Preparations in Subtropical China

Diameter Growth, Biological Rotation Age and Biomass of Chinese Fir in Burning and Clearing Site Preparations in Subtropical China

Factors associated with woody alien species distribution in a newly invaded mountain system of central Argentina

Size‐Dependent Variation in Shoot Light‐Harvesting Efficiency in Shade‐Intolerant Conifers

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