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Spectral transmission and the aerial profile in mature stands of mercurialis perennis

Annals of Botany (London) 40(170): 1207-1216

Spectral transmission and the aerial profile in mature stands of mercurialis perennis

The passage of light through mature stands of the woodland perennial herb M. perennis L. is investigated. Less than 3% of each of 7 discrete wavelengths in the visible waveband reach the herb layer in the sites considered. Percentage transmission of the 750 nm wavelength was far greater, and the proportion of this light passing deep into the herb profile increased as total light transmission decreased. Mean specific leaf area of M. perennis is negatively correlated with shoot height and weight. Leaf area/shoot increases exponentially with shoot height, but linearly with shoot weight. Shoot leaf weight ratio remains virtually constant over a range of shoot sizes, but shoot leaf area ratio is negatively correlated with shoot height and shoot weight. Most leaf pairs are borne between 10-30 cm above ground level and 71% of the total leaf area occurs between 15-30 cm above ground. Average leaf area/leaf pair increases from the lowest layers in the profile upwards except for the highest strata where many leaves are not fully expanded. Chlorophyll content of leaves, expressed on either a weight or an area basis, increases from the bottom to the top of the herb profile; the ratio of chlorophyll a:b does not alter through the stand.

Accession: 006459975

Related references

Hutchings, Mj, 1976: Spectral transmission and the aerial profile in mature stands of Mercurialis perennis L. Annals of botany: 40 (170) 1207-1216

Lorenz, P.; Hradecky, M.; Berger, M.; Bertrams, J.; Meyer, U.; Stintzing, F.C., 2010: Lipophilic constituents from aerial and root parts of Mercurialis perennis L. Dog's mercury (Mercurialis perennis L.) is a perennial herb used in remedies for medicinal purposes. The plant is supposed to contain potentially active substances but its constituents have only been rarely studied. Detailed studies on the ph...

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Kothe G., 1988: Biometrical estimation of biomass and leaf area in stands of mercurialis perennis l. A biometrical method is elaborated to estimate above-ground biomass and leaf area of Mercurialis perennis L. growing in pure stands in a beech forest on limestone. The variable "P2=L .times. B .times. Z", L and B being length and width o...

Hutchings M.J., 1983: Shoot performance and population structure in pure stands of mercurialis perennis a rhizomatous perennial herb. Shoot populations of the rhizomatous perennial herb M. perennis were studied in pure stands throughout a developmental cycle in a mixed deciduous wood in eastern England [UK]. Shoot cohorts exhibited exponential decay between May and Oct., with ha...

Hutchings, M.J., 1978: Standing crop and pattern in pure stands of mercurialis perennis and rubus fruticosus in mixed deciduous woodland. Standing crop of M. perennis L. shoots was measured by dimension analysis, a technique not previously used in herb production studies. It is accurate and allows several measurements to be made on the same material. Maximum standing crop (970 .+-....

Rebane, H., 1967: The live ground cover in young hardwood/Spruce stands of the Mercurialis perennis/Aegopodium podagraria type. A study mainly in Picea abies plantations on clear-felled areas in Estonia, where naturally regenerated broadleaved tree species have outgrown the Spruce to form the top storey.

Hutchings, Mj, 1983: Shoot performance and population structure in pure stands of Mercurialis perennis L., a rhizomatous perennial herb Population dynamics, England. Oecologia 8(2): 260-264

Zvirbul' , A.P.; Gryaznov, S.E.; Solov' ev, A.M., 1983: Evaluation of mature and nearly mature Scots pine stands for the aerial application of nitrogenous fertilizers. The silvicultural, technical and economic aspects of evaluation are reviewed. When applied to an actual forest enterprise in the Novgorod region, the analysis revealed that 3800 ha (viz. 20.2% of all pine stands mature or approaching maturity, and...

D.J.Boatman, 1956: Mercurialis perennis L in Ireland. Journal of Ecology 44(2): 587-596