Provenance variation in tolerance of Melaleuca cajuputi trees to interactive effects of aluminum and salt

Nguyen, Nguyen Tran; Saneoka, Hirofumi; Suwa, Rempei; Fujita, Kazuo

doi:10.1007/s00468-008-0309-5

Cited by 8 publications

(5 citation statements)

References 37 publications

(44 reference statements)

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“…As mentioned in Section 3.2, the M. cajuputi species is sensitive to salinity, and the salinity variable ranked the highest four by contributing 9.88% in the model prediction. According to Nguyen et al (2009) [65], a young M. cajuputi species can survive up to three months in a pot with soil salinity of 5 dS/m, while other Melaleuca species can survive up to 10 weeks with soil salinity from 2 to 60 dS/m [4]. Our results highlighted that the species habitat suitability in Terengganu are high, mainly on soil with a salinity range between 1.7 and 2.2 dS/m.…”

Section: Melaleuca Cajuputi Potential Suitable Habitat and Climate Change Impactmentioning

confidence: 66%

Predicting the Habitat Suitability of Melaleuca cajuputi Based on the MaxEnt Species Distribution Model

Lah

Yusop

Hashim

et al. 2021

Forests

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Gelam tree or Melaleuca cajuputi (M. cajuputi) is an important species for the local economy as well as coastal ecosystem protection in Terengganu, Malaysia. This study aimed at producing a current habitat suitability map and predicting future potential habitat distribution for M. cajuputi in Terengganu based on Species distribution modeling (SDM) using the Maximum Entropy principle. Our modeling results show that for the current potential distribution of M. cajuputi species, only 10.82% (1346.5 km2) of Terengganu area is suitable habitat, which 0.96% of the areas are under high, 2.44% moderate and 7.42% poor habitat suitability. The model prediction for future projection shows that the habitat suitability for M. cajuputi would decrease significantly in the year 2050 under RCP 4.5 where the largest contraction from suitable to unsuitable habitat area is about 442.1 km2 and under RCP 2.6 is the highest expansion from unsuitable to suitable habitat area (267.5 km2). From the future habitat suitability projection, we found that the habitat suitability in Marang would degrade significantly under all climate scenarios, while in Setiu the habitat suitability for M. cajuputi remains stable throughout the climate change scenarios. The modeling prediction shows a significant influence on the soil properties, temperature, and precipitation during monsoon months. These results could benefit conservationist and policymakers for decision making. The present model could also give a perception into potential habitat suitability of M. cajuputi in the future and to improve our understanding of the species’ response under the changing climate.

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Section: Melaleuca Cajuputi Potential Suitable Habitat and Climate Change Impactmentioning

confidence: 66%

Predicting the Habitat Suitability of Melaleuca cajuputi Based on the MaxEnt Species Distribution Model

Lah

Yusop

Hashim

et al. 2021

Forests

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“…On the other hand, TF values of M. cajuputi in every treatments (except T3 for Cd) show values >1, indicating that Zn and Cd were efficiently transferred to the shoots. This might be due to the high transpiration rate of the species which is common for salt tolerant plants (Nguyen et al, 2009;Cramer et al, 1999).…”

Section: Distribution Of Zn and CD In Different Plant Partsmentioning

confidence: 99%

ASSESSMENT OF <I>MELALEUCA CAJUPUTI</I> AS HEAVY METALS PHYTOREMEDIATOR FOR SEWAGE SLUDGE CONTAMINATED SOIL

Mohd¹

2013

American Journal of Applied Sciences

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In 2011, total marine capture landings in Peninsular Malaysia decreased by 3.9% which amounted to 1,373,105 tonnes as compared to 1,428,881 tonnes in 2010. The decline is connected to marine pollution which mainly comes from land based sources. Coastal forests play an important role affecting the marine ecosystem health and need to be conserved as a buffer to minimize pollution input into marine ecosystem. Heath forest, a type of coastal forest that receives less attention compared to mangroves, also has similar role. Melaleuca cajuputi that dominates heath forest has high potential as a phytoremediator of heavy metals and also has high economic values. A greenhouse experiment was conducted to evaluate the potential of this species to extract heavy metals namely Zn and Cd from soil. Four levels of treatment were prepared where the test media was mixed with different amounts of sewage sludge (v/v) namely; T1 (control-soil only), T2 (30% sludge +70% soil), T3 (50% sludge + 50% soil) and T4 (70% sludge + 30% soil). After 90 days of experimental period, the accumulation of Zn was found to be high in the roots (137.19 mg kg^-1), followed by the leaves (135.0 mg kg^-1) and stems (102.24 mg kg^-1). As for Cd the highest concentration was in the roots (2.05 mg kg^-1), stems (1.78 mg kg^-1) and leaves (1.66 mg kg^-1). The species Transfer Factor (TF) values in the greenhouse experiment were > 1 but the Bio-Concentration Factor (BCF) values areâ¤ 1. This result shows that M. cajuputi is tolerant to Zn and Cd toxicity (low BCF) but able to transfer these elements (high TF) to the shoots for removal by leaf fall or by harvesting the shoots. In addition, the accumulation of Zn and Cd were high in the roots which suggests that Zn and Cd were efficiently immobilized (in the roots) from entering the marine ecosystem

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“…From 63.6 to 76.4 % of two month old seedlings of Melaleuca cajuputi tolerated conditions of 10 mM AlCl 3 (Nguyen et al, 2009). However, if exposed to both high aluminum and salinity concentrations, this species demonstrates much lower tolerance (Nguyen et al, 2009). (Nguyen et al, 2009) …”

Section: Resistance To Salinitymentioning

confidence: 98%

“…Some studies have been undertaken to investigate the ability of Melaleuca seedlings to tolerate saline conditions. Most of these experiments were undertaken in pots (in a greenhouse), and results show that two month old Melaleuca cajuputi seedlings can survive 3 months in 50 mM of salinity, with a tolerance level calculated from 40.3 to 57.5 % (Nguyen et al, 2009). Furthermore, 90 % of five month old Melaleuca ericifolia seedlings can survive in 60 dS m -1 salinity (Salter et al, 2006).…”

Section: Resistance To Salinitymentioning

confidence: 99%

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A study of the carbon stocks of Melaleuca forests in the coastal regions of Southern Vietnam and South East Queensland Australia

Tran¹

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The genus Melaleuca consists of around 260 species. The genus dominates forests that cover more than six million hectares of land globally. Most of that forest occurs in Australia, but there are also smaller areas in countries in South-East Asia and the Caribbean region, and the southern United States of America. Melaleuca forests predominantly occur in wetland and coastal ecosystems and as a result are substantially exposed to the influences of climate change and human development, particularly in regards to impacts on hydrological and soil systems. Like other wetland forest ecosystems, a large amount of carbon is stored in the biomass and soil components of Melaleuca forests. However, up until now very little research has been published on the extent and nature of those carbon stocks. This thesis addresses this gap in the research literature and presents the results of a study that involved collecting data on the carbon stocks of various Melaleuca forests in Australia and Vietnam.A variety of widely recognised data collection methods were used to collect data on the carbon Carbon stock densities of VS1, VS2, VS3, VS4, and VS5 were found to be 275.98 tC/ha, 159.36 tC/ha, 784.68 tC/ha, 544.28 tC/ha, and 246.96 tC/ha, respectively. Carbon stock densities of A1, A2, A3, and A4 were found to be 381.59 tC/ha, 278.40 tC/ha, 210.36 tC/ha, and 241.72 tC/ha, respectively. In Australia, carbon accumulation in forest litter in wet conditions (A1) was likely to be 6.5 times higher than those in drained and drier conditions (A2). The total carbon stock densities in Melaleuca forests in the wildfire conditions were found to be lost around 45 % of those in primary forests under wetter conditions. Furthermore, the exchangeable sodium percentage of Melaleuca forests in Vietnam on sandy soil (VS1 and VS2) showed high sodicity, while those on clay soils (VS3, VS4, and VS5) varied from low to moderate sodicity.ii The results of this thesis also show that: (1) the carbon stock densities of Melaleuca forests in Australia are much greater than previously thought and substantially higher than current estimates used in Australia's national carbon accounting systems; (2) the carbon stock densities of Melaleuca forests on peat lands in Vietnam are large compared to many other forest types around the world; (3) and that Melaleuca forests on sandy soils in Vietnam are tolerant of highly sodic conditions, an important feature considering how climate change and human development in the region is impacting on local hydrological and soil systems. In these regards, the results of this thesis provide important information for the future sustainable management of Melaleuca forests in both Australia and Vietnam, particularly in regards to emerging forest carbon conservation and management initiatives.iii Declaration by author Publications included in this thesisThis thesis includes four jointly authored published articles, as follows: two published papers and two jointly authored works that have been submitted for peer review. These paper...

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Provenance variation in tolerance of Melaleuca cajuputi trees to interactive effects of aluminum and salt

Cited by 8 publications

References 37 publications

Predicting the Habitat Suitability of Melaleuca cajuputi Based on the MaxEnt Species Distribution Model

Predicting the Habitat Suitability of Melaleuca cajuputi Based on the MaxEnt Species Distribution Model

ASSESSMENT OF <I>MELALEUCA CAJUPUTI</I> AS HEAVY METALS PHYTOREMEDIATOR FOR SEWAGE SLUDGE CONTAMINATED SOIL

A study of the carbon stocks of Melaleuca forests in the coastal regions of Southern Vietnam and South East Queensland Australia

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