Allometric relationships for estimating the aboveground phytomass and leaf area of mangrove Kandelia candel (L.) Druce trees in the Manko Wetland, Okinawa Island, Japan

Khan, Md. Nabiul Islam; Suwa, Rempei; Hagihara, Akio

doi:10.1007/s00468-004-0377-0

Cited by 60 publications

(58 citation statements)

References 17 publications

(17 reference statements)

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“…Our results indicate that the easily-measurable tree parameters such as DBH do not show a high correlation with leaf area. This point was also confirmed by some previous reports (Gower et al 1999;Khan et al 2005;Babaei-Kafaki et al 2009). For instance, though Vyas et al (2010) introduced a low r 2 in the relation between DBH and LA, estimated an excellent correlation between LA and the crown spread area.…”

Section: Resultssupporting

confidence: 88%

Estimation of leaf area index and assessment of its allometric equations in oak forests: Northern Zagros, Iran

Khosravi¹,

Namiranian²,

Ghazanfari³

et al. 2012

J. For. Sci.

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AbStrAct:The focus of the present study is the estimation of leaf area index (LAI) and the assessment of allometric equations for predicting the leaf area of Lebanon oaks (Quercus libani Oliv.) in Iran's northern Zagros forests. To that end, 50 oak trees were randomly selected and their biophysical parameters were measured. Then, on the basis of destructive sampling of the oak trees, their specific leaf area (SLA) and leaf area were measured. The results showed that SLA and LAI of the Lebanon oaks were 136.9 cm·g -1 and 1.99, respectively. Among all the parameters we measured, the crown volume exhibited the highest correlation with LAI (r 2 = 0.65). The easily measured tree parameters such as diameter at breast height did not show a high correlation with leaf area (r 2 = 0.36). Our obtained moderate correlations in the allometric equations could be due to the fact that branches of these trees had been pollarded by the local people when the branches were only 3 or 4 years old; therefore, the natural structure of the crowns in these trees might have been damaged.

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Section: Resultssupporting

confidence: 88%

Estimation of leaf area index and assessment of its allometric equations in oak forests: Northern Zagros, Iran

Khosravi¹,

Namiranian²,

Ghazanfari³

et al. 2012

J. For. Sci.

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“…R. stylosa has more pioneer-like traits than B. gymnorrhiza (Smith 1992). K. obovata is also a pioneer species in mangrove succession (Khan et al 2005(Khan et al , 2007. These pioneer species could increase in abundance in such environments.…”

Section: Discussionmentioning

confidence: 99%

Aboveground net primary production and stand dynamics of mangroves along a river on Iriomote Island, southwestern Japan

Enoki

Yasuda

Kusumoto

2014

Tropics

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In this study, we examined the standing aboveground biomass, biomass growth, litterfall and tree species population dynamics of mangrove forest along the Nakara River, Iriomote Island, southwestern Japan, to explain the spatial patterns of stand structure and aboveground net primary production in reference to the stand dynamics of mangrove tree species along the river. The entire aboveground biomass of the mangrove forest did not vary with topographic position at the stand level, while three mangrove species showed different distributional patterns along the river. Although Bruguiera gymnorrhiza was generally dominant, Rhizophora stylosa codominated in the downstream areas. Kandelia obovata occurred only at the river＇s edge in the downstream area. The observed spatial patterns of aboveground productivity of each species depended mostly on their biomass. The distribution patterns of the mangrove tree species were based on parameters of their population dynamics, such as growth, recruitment and mortality. The effects of disturbance, especially the effects of typhoons, on the forest dynamics were prominent in this study period. The results of the study suggest that the spatial pattern of species distribution and productivity could be largely affected by the typhoon disturbances.

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“…(4), ρ 0 specifies the initial density and b is a constant. The individual tree weight was approximated using the allometric relationships which were established for the same stand as reported in a previous study (Khan et al, 2005). All data analyses were performed using R software version 2.15.2 (R Development Core Team, 2011); the point pattern analysis (pair correlation and mark correlation), in particular, was performed using the "spatstat" package of R (Baddeley and Turner, 2005).…”

Section: Mortalitymentioning

confidence: 99%

How do tree competition and stand dynamics lead to spatial patterns in monospecific mangroves?

et al. 2013

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Information on mangrove stand development is rare because long-term monitoring data is often lacking. Such information is important in order to plan management measures effectively. Novel approaches based on existing datasets are required to bridge this gap of knowledge. This study uses a unique combination of field data analyses with simulation experiments in order to demonstrate how information on mangrove dynamics can be extracted if data are sparse. The paper provides a baseline characterization of stand development in a monospecific pioneer mangrove stand of Kandelia obovata. Point pattern analyses revealed that in the young stage, self-thinning has started but has not yet lead to a regularity of spatial tree distribution in the entire stand, and trees located in smaller clumps hinder each other in growth but do not lead to a significant size class differentiation. However, after ca. 2 decades the self-thinning and the size class differentiation start to become more visible. A mutual inhibition of growth was observed within 2 m circular distance (r) in the young stage and within 3 m distance after two decades of stand development as confirmed by the negative values of mark correlation function. As a stand grows older the spatial pattern of individuals become more regular from a clustered pattern. In order to understand and predict the future stand development, simulation experiments were carried out by means of the individual-based model KiWi

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Allometric relationships for estimating the aboveground phytomass and leaf area of mangrove Kandelia candel (L.) Druce trees in the Manko Wetland, Okinawa Island, Japan

Cited by 60 publications

References 17 publications

Estimation of leaf area index and assessment of its allometric equations in oak forests: Northern Zagros, Iran

Estimation of leaf area index and assessment of its allometric equations in oak forests: Northern Zagros, Iran

Aboveground net primary production and stand dynamics of mangroves along a river on Iriomote Island, southwestern Japan

How do tree competition and stand dynamics lead to spatial patterns in monospecific mangroves?

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