Results 251 to 260 of about 18,322 (291)
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Protoplasma, 2023
Differences in stomatal density (SD) and stomatal index (SI) are associated with the conditions of the environment in which they are distributed. Mimosa species are important elements in different plant communities, yet knowledge of the ecological implications of its stomatal characteristics is scarce.
Manuel Alberto Ayala-Ramos +1 more
exaly +3 more sources
Differences in stomatal density (SD) and stomatal index (SI) are associated with the conditions of the environment in which they are distributed. Mimosa species are important elements in different plant communities, yet knowledge of the ecological implications of its stomatal characteristics is scarce.
Manuel Alberto Ayala-Ramos +1 more
exaly +3 more sources
Stomatal density and stomatal index as indicators of paleoatmospheric CO2 concentration
Review of Palaeobotany and Palynology, 2001A growing number of studies use the plant species-specific inverse relationship between atmospheric CO(2) concentration and stomatal density (SD) or stomatal index (SI) as a proxy for paleo-CO(2) levels. A total of 285 previously published SD and 145 SI responses to variable CO(2) concentrations from a pool of 176 C(3) plant species are analyzed here ...
Dana L Royer
exaly +3 more sources
Variations in stomatal density and index: implications for palaeoclimatic reconstructions
Plant, Cell and Environment, 1996ABSTRACTThe variation in stomatal characters in leaves from one Alnus glutinosa (L.) Gaertn. tree is analysed. Measurements were taken from over 70 sites on the abaxial surfaces of representative ‘sun’ and ‘shade’ leaves having the same insertion point. The mean values of stomatal density and index in the shade leaf were significantly lower (71 and 93%,
Tracy Lawson, John A Raven
exaly +2 more sources
Effect of Culture Conditions on Stomatal Density and Stomatal Index in Four Cactus Species
Haseltonia, 2015Abstract: We evaluated type of stomata, as well as differences in stomatal frequency in three areas of the plant (apical, middle and basal) under two culture conditions (in vitro and ex vitro), in four cactus species (Opuntia ficus-indica, Hylocereus undatus, Escontria chiotilla and Mammillaria petterssonii).
Cristina Garcidueñas-Piña +2 more
exaly +2 more sources
Stomatal Density and Index of Fossil Plants Track Atmospheric Carbon Dioxide in the Palaeozoic
Annals of Botany, 1995Abstract It has been demonstrated that the leaves of a range of forest tree species have responded to the rising concentration of atmospheric CO2 over the last 200 years by a decrease in both stomatal density and stomatal index. This response has also been demonstrated experimentally by growing plants under elevated CO2 concentrations.
Jennifer C Mcelwain +2 more
exaly +2 more sources
Plant Ecology, 2005
The inverse relationship between numbers of stomata (stomatal frequency) on tree leaves and ambient CO2 concentration is increasingly applied for reconstructing past atmospheric CO2 levels. The abundance of leaf remains of Quercus robur in Holocene peat and lake deposits in Europe makes this species potentially suitable for high-resolution stomatal ...
Wolfram M Kürschner +2 more
exaly +3 more sources
The inverse relationship between numbers of stomata (stomatal frequency) on tree leaves and ambient CO2 concentration is increasingly applied for reconstructing past atmospheric CO2 levels. The abundance of leaf remains of Quercus robur in Holocene peat and lake deposits in Europe makes this species potentially suitable for high-resolution stomatal ...
Wolfram M Kürschner +2 more
exaly +3 more sources
Holocene, 1995
The impact of different concentrations of ambient CO 2 on the stomatal density and index of Salix cinerea are investigated. Fossil leaves (AMS dated 9190 BP) and present-day material from the same site in south west Ireland are compared with nineteenth-century herbarium material from Ireland.
Jennifer C Mcelwain +2 more
exaly +2 more sources
The impact of different concentrations of ambient CO 2 on the stomatal density and index of Salix cinerea are investigated. Fossil leaves (AMS dated 9190 BP) and present-day material from the same site in south west Ireland are compared with nineteenth-century herbarium material from Ireland.
Jennifer C Mcelwain +2 more
exaly +2 more sources
Palaeogeography, Palaeoclimatology, Palaeoecology, 2005
Abstract Changes in atmospheric CO 2 concentrations over the geological past have attracted a considerable amount of scientific interest during the last decade. Many authors have demonstrated, that for some extant plants, stomatal densities and indices are negatively correlated with atmospheric CO 2 concentrations.
Dieter Uhl, Hans Kerp
exaly +3 more sources
Abstract Changes in atmospheric CO 2 concentrations over the geological past have attracted a considerable amount of scientific interest during the last decade. Many authors have demonstrated, that for some extant plants, stomatal densities and indices are negatively correlated with atmospheric CO 2 concentrations.
Dieter Uhl, Hans Kerp
exaly +3 more sources
Review of Palaeobotany and Palynology, 2014
Abstract Platanus neptuni (Ettingshausen) Bůžek, Holý and Kvacek is a deciduous and preferentially azonal taxon of temperate to warm-temperate vegetation in Europe from the Late Eocene to the Late Miocene. The high fossilization potential of its leaves and easily identifiable stomata and epidermal cells make P.
Anita Roth-Nebelsick +2 more
exaly +3 more sources
Abstract Platanus neptuni (Ettingshausen) Bůžek, Holý and Kvacek is a deciduous and preferentially azonal taxon of temperate to warm-temperate vegetation in Europe from the Late Eocene to the Late Miocene. The high fossilization potential of its leaves and easily identifiable stomata and epidermal cells make P.
Anita Roth-Nebelsick +2 more
exaly +3 more sources