melanic


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

melanic

[me′lan·ik]
(geology)
References in periodicals archive ?
Although PP lost in surface runoff was unaffected by soil type, SS losses were greater from the Pallic and Recent Gley soils than the Melanic and Brown soils (Table 2).
I ask the students to plot an Excel[R] graph showing the increase in melanic moths from 1846-1896, then I have them add a graph showing Haldane's model for the melanism allele's increase.
infestans does not exhibit sylvatic foci, with the exception of atypical dark morph and melanosoma melanic variants (14,22).
Another climatic influence may have been the high rainfall levels in northern Europe and the prevailing year-round high humidity/wetness--it is interesting to note that in Hawaii Tomich (1968) found a high prevalence of the melanic form in the higher and wetter parts of the island.
In the risk map survey the most commonly used Subgroup in the Redoxic and Oxyaquic Hydrosols is Acidic (40), followed by Melanic (29), Peaty (22), Melacic (9), Sodic (3), Humose (3), Dystrophic (2) and Melanic-Acidic (1).
The melanic horizon is 1 of the 5 diagnostic topsoil horizons distinguished in the South African soil classification system (Soil Classification Working Group 1991).
Waiareka clay is a Typic Vertic Melanic soil (Vertic Haplustoll), with a high CEC (72 cmol/kg), a large amount of smectite clay (66%), and high organic C (4%), A1 (0.
2]/g), whereas the Waiareka silty clay soil, a melanic soil with 56% clay, has the highest value (59.
Soil type New Zealand(A) Soil Taxonomy(B) Drainage class(C) Horotiu Typic Orthic Typic Udivitrand Well drained silt loam Allophanic Te Kowhai Typic Orthic Typic Ochraqualf Poorly drained silt loam Gley Hauraki Melanic Orthic Aeric Fluvaquent Poorly drained clay Gley
NZ soil series Land use NZ Soil Classification(A) Motumaoho Grass pasture (>30 years) Organic soil silty peat Motumaoho Indigenous Kahikatea Organic soil silty peat (Dacrycapus dacryoides) forest Horotiu silt Grass pasture (>50 years) Allophanic soil loam Horotiu silt Maize (Zea mays) cropping Allophanic soil loam (26 years) Rotoiti sandy Grass pasture (25 years) Pumice soil loam Rotoiti sandy Pinus radiata plantation Pumice soil loam (25 years) Waiareka clay Grass pasture (>20 years) Melanic soil Waiareka clay Mixed arable horticulture Melanic soil (40 years) NZ soil series Soil Taxonomy Total C Microbial C Great Group (%) ([Mu] C/g soil) Motumaoho Medisaprist 20.
Study site Soil classification(A) Soil description (rainfall) Ardenest Rendic melanic soil Shallow, dark, granular; (750 mm) limestone fragments Annandale Rendic melanic soil Shallow, dark; some (700 mm) limestone fragments Ngarua Orthic melanic soil Dark, overlying marble; (2116 mm) some charcoal fragments Study site Vegetation Present landuse (rainfall) Ardenest Exotic pasture Semi-extensive (750 mm) and weeds pastoral farming Annandale Exotic pasture Semi-extensive (700 mm) pastoral farming Ngarua Exotic pasture, Semi-extensive (2116 mm) some low shrubs pastoral farming
The soils included an Allophanic Soil (Te Kuiti), a Melanic Soil (Waiareka), a Pallic Soil (Takahe), and a Gley Soil (Temuka) and were soils with a diverse range of chemical and physical properties (Table 2).