Zobrazeno 1 - 10
of 32
pro vyhledávání: '"D. H. N. Spence"'
Publikováno v:
New Phytologist. 84:533-542
summary The freshwater macrophyte Hippuris vulgaris exhibits heterophylly. During July and August aerial-type leaves occur even on immersed shoots down to a depth of 15 m in two clear-water limestone lochs in Scotland. Complementary field and laborat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5ce18d6498051995a1baa278f9f08f5
https://doi.org/10.1111/j.1469-8137.1980.tb04560.x
https://doi.org/10.1111/j.1469-8137.1980.tb04560.x
Publikováno v:
Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences. 84:85-118
It is an impossible task to identify a precise point in time which marks the start of an important departure in scientific thought. Every such development has its antecedents in earlier observations, ideas and interpretations. This applies as much to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acb49775ff8fe150a825eabd386ed302
https://doi.org/10.1017/s0269727000013762
https://doi.org/10.1017/s0269727000013762
Publikováno v:
Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences. 77:307-328
SynopsisCentred on Loch Druidibeg, macrophyte vegetation was surveyed in and around 30 lochs in northern South Uist. Alkalinity ranges from 0·014 to 2·33 m.-equiv −1, conductivity (25°C) from 100 to 33,900 μs cm−1, chlorinity from 0·66 m.-eq
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::81e64ab79d6eba85d4adbc19d24b8290
https://doi.org/10.1017/s026972700001277x
https://doi.org/10.1017/s026972700001277x
Publikováno v:
Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences. 78:123-138
SynopsisLoch Obisary has a narrow sea inlet to a north basin which is 45 m deep, stratified in summer and winter and joined by shallow channels to an unstratifled south basin.Mean conductivity (25°C) and sodium measurements indicate that in summer a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed8130069ce1b1bbeec5699ce656df12
https://doi.org/10.1017/s0269727000012963
https://doi.org/10.1017/s0269727000012963
ENVIRONMENTAL CONTROL OF THE SEASONAL GROWTH OF THE SUBMERSED AQUATIC MACROPHYTE LOBELIA DORTMANNA L
Autor:
Andrew M. Farmer, D. H. N. Spence
Publikováno v:
New Phytologist. 106:289-299
SUMMARY Leaf growth, photosynthesis and soluble carbohydrate content were measured for Lobelia dortmanna L. across one year in a small oligotrophic lochan in the northwest of Scotland at a number of sites, varying in degree of exposure, sediment type
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e268485a4572ea39a4e2eb1b4887ab99
https://doi.org/10.1111/j.1469-8137.1987.tb00144.x
https://doi.org/10.1111/j.1469-8137.1987.tb00144.x
Autor:
D. H. N. Spence, S.C. Maberly
Publikováno v:
Aquatic Botany. 34:267-286
Amphibious macrophytes are remarkable for their ability to photosynthesise in air and water, since these two media are very different. Specifically, water has a higher water potential, greater thermal stability, but reduced availability of light, CO2
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c3db31d0d4335bf82af8d41acfda85e
https://doi.org/10.1016/0304-3770(89)90059-4
https://doi.org/10.1016/0304-3770(89)90059-4
Publikováno v:
New Phytologist. 99:183-194
Summary The freshwater angiosperm Potamogeton crispus produces specialized vegetative buds, known as turions, in early summer, in contrast to their autumn production by other temperate climate species. Laboratory experiments showed that turion produc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6667616b3ce12b760d8b4cbacdcbe4cb
https://doi.org/10.1111/j.1469-8137.1985.tb03648.x
https://doi.org/10.1111/j.1469-8137.1985.tb03648.x
Autor:
H. M. Dale, D. H. N. Spence
Publikováno v:
Freshwater Biology. 8:251-268
SUMMARY. Populations of Potamogeton richardsonii in Sparrow Lake, Ontario, vary greatly in leaf dimensions and internode length. Leaf length/breadth (L/B) ratio is increased by low irradiance, significantly at 4% daylight and, in a contrary fashion,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::680f7b8c8e9b6c8a2230c2b08fd8de67
https://doi.org/10.1111/j.1365-2427.1978.tb01446.x
https://doi.org/10.1111/j.1365-2427.1978.tb01446.x
Autor:
Andrew M. Farmer, D. H. N. Spence
Publikováno v:
Aquatic Botany. 26:247-258
The isoetids are one of the commonest ecological groupings of aquatic macrophytes in Scotland. Their growth strategies involve a range of features associated with Grime's classification of plant strategies. Subularia aquatica L. is a characteristic r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::40231971ebeaefd84749be40bf55a530
https://doi.org/10.1016/0304-3770(86)90025-2
https://doi.org/10.1016/0304-3770(86)90025-2
Autor:
D. H. N. Spence, Andrew M. Farmer
Publikováno v:
Annals of Botany. 56:347-350
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::acc63ad3c7632e913dc17e40077421b3
https://doi.org/10.1093/oxfordjournals.aob.a087020
https://doi.org/10.1093/oxfordjournals.aob.a087020