The Nature and Origin of the Soils over the Cornish Serpentine

Coombe, D. E.; Frost, L. C.; Bas, M. Le; Watters, W. A.

doi:10.2307/2256839

Cited by 42 publications

(9 citation statements)

References 11 publications

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“…gerardii (from tlie Lizard, Cornwall) on his NgCO, treatment wlien compared with that on the CaCO, one, from mliicli he feels that there is some evidence of adaptation in this subspecies. Ncrertlieless, Coombe and Frost (1956) consider that tlie Lizard serpentine is poor in "morphologically distinguishable biotypes". However, Rune (1053) states that species showing adaptation to high Ng and Ni levcls do occur on serpcntinc outcrops in Scandinaria.…”

Section: Discussionmentioning

confidence: 99%

Some Distinctions between Calciphilous and Basiphilous Plants

Ferreira¹

1964

Transactions of the Botanical Society of Edinburgh

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Section: Discussionmentioning

confidence: 99%

Some Distinctions between Calciphilous and Basiphilous Plants

Ferreira¹

1964

Transactions of the Botanical Society of Edinburgh

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“…The low content of Cu is in sharp contrast to the other groups of soils not derived from ultrabasic rocks. The samples within this group are concentrated within the central plateau region of the peridotite outcrop and are probably partly derived from the loess cover (Coombe & Frost 1956;Catt & Staines 1982) almost entirely from loess since the additional multielement data indicate that they have very low levels of Mg, down to 0.8%, but high levels of K and Rb, at 2% and 80 ppm respectively, probably reflecting the alkali feldspar and white mica components (Coombe & Frost 1956: Catt & Staines 1982. There is no evidence either from the field slips of the original mapping by Flett or from fragment examination during the soil sampling for the occurrence of granitic Kennack Gneiss in these areas.…”

Section: Groupmentioning

confidence: 97%

“…The area was not glaciated during the Pleistocene but deposits of slope debris cap some cliff sections. Most of the soils upon which the heathland vegetation has developed are derived from serpentinized ultrabasic rocks and have been studied in detail by plant ecologists (Coombe & Frost 1956). Fine sandy soils, which occur in raised areas of the central part of the platform, are developed on a patchily preserved mantle of loess.…”

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confidence: 99%

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Geochemical soil surveys as an aid to mapping and interpretation of the Lizard Complex

Smith¹,

Leake²

1984

JGS

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The results of a geochemical soil survey have been used to refine the geological mapping and interpretation of the inland, poorly exposed part of the Lizard Complex. Using cluster analysis, six major groups were recognized within a data set comprising 619 samples analysed for Cr, Co, Ni, Cu, Zn and Pb. These represented ultrabasic rocks, gabbroic rocks, two distinct units of Landewednack hornblende schist, metalliferous mineralization, and soils dominated by exotic material such as löess. The geographical distribution of these groups indicates that a lower Landewednack unit can be recognized in the S and W, separated by a thin transition zone from the main Lizard peridotite. This contrasts with its NE contact which is marked by a wide transition zone of soils suggesting interdigitating gabbroic and ultrabasic compositions, corresponding to the Traboe cumulate complex (Leake & Styles 1984), and a sharp contact with an Upper Landewednack unit. Both soil and deep auger sampling indicate that ultrabasic rocks underlie much of the area previously mapped as a tongue-like SW extension of the Crousa Gabbro.

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“…It occurs over soils derived from ultramafic ‘serpentine’ in the Lizard, Cornwall which are rich in metals such as chromium and nickel but poor in aluminium, potassium and phosphorus (Coombe & Frost ; Coombe et al . ; Rodwell ). The species is also recorded from ultramafic soils in Tuscany, Italy (Chiarucci et al .…”

Section: Habitatmentioning

confidence: 99%

Biological Flora of the British Isles: Serratula tinctoria

Jefferson

Walker

2017

Journal of Ecology

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Summary This account presents information on all aspects of the biology of Serratula tinctoria L. that are relevant to understanding its ecological characteristics and behaviour. The main topics are presented within the standard framework of the Biological Flora of the British Isles: distribution, habitat, communities, responses to biotic factors, responses to environment, structure and physiology, phenology, floral and seed characters, herbivores and disease, history and conservation. Serratula tinctoria is a gynodioecious perennial forb of open or semi‐shaded habitats including grassland, heath, mire, open woodland and scrub and their ecotones. It is found throughout most of England and Wales but it is very rare in Scotland and absent from Ireland. Serratula tinctoria is found in Europe as far north as southern Sweden and Norway. It is absent from much of the Boreal biogeographical zone, including most of Fennoscandia and northern Poland, Russia and the Baltic States, and from the lowland Mediterranean zone. Serratula tinctoria occurs on soils overlying a wide variety of superficial deposits and sedimentary, metamorphic and igneous rocks, including ultramafic rocks. The pH range of these soils is wide, ranging from acidic to moderately alkaline but with nutrient status classed as oligotrophic, or more rarely mesotrophic. In mire or fen habitats, it occurs in topogenous or soligenous situations with a similar soil water pH range. It is able to tolerate a wide spectrum of soil water‐table conditions, ranging from very dry to flooded. Serratula tinctoria is pollinated by various insects of the orders Hymenoptera, Diptera and Lepidoptera, particularly bumblebees, hoverflies and butterflies. It produces phytoecdysteroids, which mimic a hormone that regulates insect development. The seed has a feathery pappus for wind dispersal and establishment is primarily from seed. However, it has strong dispersal limitation with slow migration rates into restored grasslands of 1 m year−1. The species has a short‐term persistent seed bank. Seedling recruitment is enhanced by disturbance that creates bare ground, increasing light flux and lower cover of bryophytes and litter, and reduced by higher nutrient availability and lack of management. Formerly the source of a yellow dye, S. tinctoria has declined in Britain since at least the late 19th Century primarily due to a combination of drainage, ploughing and agricultural improvement and, conversely, lack of management by cutting and grazing in its grassland, heath and mire habitats. There is evidence that the decline slowed or stabilised between the late‐1980s and the mid‐2000s, in part due to the positive impact of conservation via statutory protection on designated sites and wider measures delivered through agri‐environment schemes.

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The Nature and Origin of the Soils over the Cornish Serpentine

Cited by 42 publications

References 11 publications

Some Distinctions between Calciphilous and Basiphilous Plants

Some Distinctions between Calciphilous and Basiphilous Plants

Geochemical soil surveys as an aid to mapping and interpretation of the Lizard Complex

Biological Flora of the British Isles: Serratula tinctoria

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