Genesis and Behaviour of Ultramafic Soils and Consequences for Nickel Biogeochemistry

2020 ◽  
pp. 215-238
Author(s):  
Guillaume Echevarria
Keyword(s):  
Ultramafic Soils

scholarly journals Blepharidium guatemalense, an obligate nickel hyperaccumulator plant from non-ultramafic soils in Mexico

Chemoecology ◽  
2021 ◽  
Author(s):  
Dulce Montserrat Navarrete Gutiérrez ◽  
A. Joseph Pollard ◽  
Antony van der Ent ◽  
Michel Cathelineau ◽  
Marie-Noëlle Pons ◽  
...  
Keyword(s):  
Ultramafic Soils ◽  
Nickel Hyperaccumulator ◽  
Hyperaccumulator Plant

Understanding the genesis of ultramafic soils and catena dynamics in Niquelândia, Brazil

Geoderma ◽  
2009 ◽  
Vol 151 (3-4) ◽  
pp. 204-214 ◽  
Author(s):  
J. Garnier ◽  
C. Quantin ◽  
E. Guimarães ◽  
V.K. Garg ◽  
E.S. Martins ◽  
...  
Keyword(s):  
Ultramafic Soils

Heterospathe fernandoi, a new palm (Areceae, Arecoideae, Arecaceae) from the Philippines

Phytotaxa ◽  
2019 ◽  
Vol 401 (2) ◽  
pp. 117
Author(s):  
JIRO T. ADORADOR
Keyword(s):  
Conservation Status ◽  
The Philippines ◽  
Ultramafic Soils ◽  
Habitat Ecology ◽  
Reproductive Characters

A new slender clustering palm, Heterospathe fernandoi, from forests on ultramafic soils in Samar, Dinagat, Bucas Grande, and northeastern Mindanao in the Philippines is described and illustrated. It is similar to H. scitula in its general vegetative and reproductive characters but differs in its somewhat persistent leaf sheaths, relatively wider median unicostulate leaflets, and interfoliar inflorescences in which both the axes and perianth are typically coloured light purple to deep maroon during anthesis. Its morphology, habitat, ecology, and conservation status are also discussed.

Vegetation of Beni Bousera (northern Morocco) ultramafic soils and adjacent non-ultramafic soils in relation to edaphic factors

2015 ◽  
Vol 63 (4) ◽  
pp. 353
Author(s):  
A. El Ghalabzouri ◽  
R. Ajbilou ◽  
M. G. Mariotti ◽  
K. Targuisti ◽  
M. Ater
Keyword(s):  
Species Composition ◽  
Principal Component ◽  
Physicochemical Characteristics ◽  
Exchange Capacity ◽  
Ultramafic Soils ◽  
Significant Difference ◽  
Principal Factors ◽  
Calcium Magnesium ◽  
Clear Differentiation ◽  
Student’S T

Vegetation and soil sampling were undertaken in 47 relevés in two different sites in Beni Bousera (northern Morocco), 32 relevés were on ultramafic sites (peridotite) and 15 were on adjacent non-ultramafic soils (mica-schist). Soil composition of exchangeable elements (nickel, calcium, magnesium, calcium : magnesium ratio, iron, copper) and physicochemical characteristics (e.g. pH, cation exchange capacity, conductivity, carbonate) were investigated and the species composition and cover were recorded. Although there was a significant difference between the two types of soil shown by Student’s t-test and principal component analysis, the ‘serpentine factor’ can be considered moderate on the basis of the observed heavy metal concentrations and of the related calcium : magnesium ratio. Correspondence and canonical analysis were used to detect the principal factors associated with gradients in species composition. This analysis showed a clear differentiation of vegetation among the plant communities. Preferential or strict serpentinophyte species were recognised, whereas no hyperaccumulator species have yet been found.

Assessing chromate availability in tropical ultramafic soils using isotopic exchange kinetics

2009 ◽  
Vol 9 (5) ◽  
pp. 468-475 ◽  
Author(s):  
Jérémie Garnier ◽  
Cécile Quantin ◽  
Guillaume Echevarria ◽  
Thierry Becquer
Keyword(s):  
Isotopic Exchange ◽  
Ultramafic Soils ◽  
Isotopic Exchange Kinetics ◽  
Exchange Kinetics

The flora of ultramafic soils in the Australia–Pacific Region: state of knowledge and research priorities

2015 ◽  
Vol 63 (4) ◽  
pp. 173 ◽  
Author(s):  
Antony van der Ent ◽  
Tanguy Jaffré ◽  
Laurent L'Huillier ◽  
Neil Gibson ◽  
Roger D. Reeves
Keyword(s):  
New Zealand ◽  
Western Australia ◽  
New Caledonia ◽  
Morphological Characteristics ◽  
Research Priorities ◽  
Habitat Destruction ◽  
Herbarium Specimens ◽  
Pacific Region ◽  
Ultramafic Soils ◽  
High Concentration

In the Australia–Pacific Region ultramafic outcrops are both widespread and extensive, covering thousands of km2. Soils derived from ultramafic bedrock impose edaphic challenges and are widely known to host highly distinctive floras with high levels of endemism. In the Australia–Pacific Region, the ultramafics of the island of New Caledonia are famed for harbouring 2150 species of vascular plants of which 83% are endemic. Although the ultramafic outcrops in Western Australia are also extensive and harbour 1355 taxa, only 14 species are known to be endemic or have distributions centred on ultramafics. The ultramafic outcrops in New Zealand and Tasmania are small and relatively species-poor. The ultramafic outcrops in Queensland are much larger and host 553 species of which 18 (or possibly 21) species are endemic. Although New Caledonia has a high concentration of Ni hyperaccumulator species (65), only one species from Western Australia and two species from Queensland have so far been found. No Ni hyperaccumulator species are known from Tasmania and New Zealand. Habitat destruction due to forest clearing, uncontrolled fires and nickel mining in New Caledonia impacts on the plant species restricted to ultramafic soils there. In comparison with the nearby floras of New Guinea and South-east Asia, the flora of the Australia–Pacific Region is relatively well studied through the collection of a large number of herbarium specimens. However, there is a need for studies on the evolution of plant lineages on ultramafic soils especially regarding their distinctive morphological characteristics and in relation to hyperaccumulation.

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