| Records |
Author  |
Margot, J.-L. |
| Title |
Insufficient Evidence of Purported Lunar Effect on Pollination in Ephedra |
Type |
Journal Article |
| Year |
2015 |
Publication |
Journal of Biological Rhythms |
Abbreviated Journal |
J Biol Rhythms |
| Volume |
30 |
Issue |
5 |
Pages |
454-456 |
| Keywords |
Animals; Plants; Moonlight |
| Abstract |
It has been suggested that the timing of pollination in Ephedra foeminea coincides with the full moon in July. The implication is that the plant can detect the full moon through light or gravity and that this trait is an evolutionary adaptation that aids the navigation by pollinating insects. Here we show that there are insufficient data to make such a claim, and we predict that pollinations of E. foeminea do not in general coincide with the full moon. |
| Address |
Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, California, USADepartment of Physics and Astronomy, University of California, Los Angeles, California, USA jlm@astro.ucla.edu |
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| Language |
English |
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Edition |
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| ISSN |
0748-7304 |
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| Notes |
PMID:26316347 |
Approved |
no |
| Call Number |
LoNNe @ kyba @ |
Serial |
1557 |
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| Author |
Massetti, L. |
| Title |
Assessing the impact of street lighting on Platanus x acerifolia phenology |
Type |
Journal Article |
| Year |
2018 |
Publication |
Urban Forestry & Urban Greening |
Abbreviated Journal |
Urban Forestry & Urban Greening |
| Volume |
34 |
Issue |
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Pages |
71-77 |
| Keywords |
Plants |
| Abstract |
Autumn phenology is an important part of the tree growing season that is still poorly understood. In addition to the environmental factors that might affect its timing, there are artificial effects introduced by modern society that could interfere with it, such as the increasing use of artificial light to illuminate urban nights. This study investigates the relationship between outdoor public lighting and leaf senescence of Platanus x acerifolia that constitutes with more than 4000 individuals, and 6% of public greening in Florence, Italy. The difference in autumn phenology under two lighting conditions was assessed by analysing data collected in a real context, using a presence-absence protocol of green leaves on 283 trees during leaf fall season from 2014 to 2017. Trees were classified in two groups of different light exposure. In 2016-2017, data were also collected at Cascine park, the main green area within the city and darker than the monitored sites. According to the analysis, the percentage of trees with green leaves under luminaires was significantly higher than trees far from the luminaires, for all sites from mid-December to the end of January, and this effect was enhanced during 2016-2017 which was characterised by a colder winter. In the same year, the period of absence of green leaves at Cascine started at least 20 days earlier than the other sites. These findings should be taken into consideration by scientists because artificial light could affect autumn phenology and therefore the length of the vegetative season, and by urban greening and light managers during the design and management of public green spaces. Moreover, the presence-absence protocol proved to be suitable for collecting observations because it was easy to perform in a real context. |
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1618-8667 |
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GFZ @ kyba @ |
Serial |
1932 |
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| Author |
Matsuda, R.; Yamano, T.; Murakami, K.; Fujiwara, K. |
| Title |
Effects of spectral distribution and photosynthetic photon flux density for overnight LED light irradiation on tomato seedling growth and leaf injury |
Type |
Journal Article |
| Year |
2016 |
Publication |
Scientia Horticulturae |
Abbreviated Journal |
Scientia Horticulturae |
| Volume |
198 |
Issue |
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Pages |
363-369 |
| Keywords |
Plants |
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0304-4238 |
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no |
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LoNNe @ kyba @ |
Serial |
1387 |
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| Author |
Matzke, E. B. |
| Title |
The Effect of Street Lights in Delaying Leaf-Fall in Certain Trees |
Type |
Journal Article |
| Year |
1936 |
Publication |
American Journal of Botany |
Abbreviated Journal |
Amer. J. of Botany |
| Volume |
23 |
Issue |
6 |
Pages |
446-452 |
| Keywords |
Plants; trees; Carolina poplar; Populus canadensis; London plane; Platanus acerifolia; sycamore; Platanus occidentalis; crack willow; Salix fragilis; New York; New York City |
| Abstract |
Street lights in the City of New York cause a retention of the leaves of certain trees: Carolina poplar (Populus canadensis), London plane (Platanus acerifolia), sycamore (Platanus occidentalis), and crack willow (Salix fragilis). Illuminated portions of a tree retain their leaves; shaded portions of the same tree do not. One side of a tree, or the lower part, may thus have numerous leaves, while the other side, and the upper part, may be entirely devoid of foliage. A relatively weak light, at a distance of as much as 45 feet from the tip of the nearest branch, may cause retention of numerous leaves. Light intensity as low as 1 foot candle, or less, may be effective. Some leaves may be retained at least a month, others more than that, beyond the normal season. The orientation of the light with respect to the tree – i.e., north, east, south, and west – is not significant. In Populus canadensis all of the leaves ultimately fall, abscission apparently taking place at the base of the petiole. In Platanus acerifolia and Platanus occidentalis some of the leaves are retained until killed by low temperature; then some of them break off above the base of the petiole. Leaves of the Populus and Platanus species discussed remain green unusually long when receiving additional illumination. Leaves of these same trees do not emerge from the buds earlier in the spring as a result of the additional illumination. |
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n/a |
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JSTOR |
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0002-9122 |
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no |
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IDA @ john @ |
Serial |
1394 |
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| Author |
Mayoral, O.; Solbes, J.; Cantó, J.; Pina, T. |
| Title |
What Has Been Thought and Taught on the Lunar Influence on Plants in Agriculture? Perspective from Physics and Biology |
Type |
Journal Article |
| Year |
2020 |
Publication |
Agronomy |
Abbreviated Journal |
Agronomy |
| Volume |
10 |
Issue |
7 |
Pages |
955 |
| Keywords |
Moonlight; Plants |
| Abstract |
This paper reviews the beliefs which drive some agricultural sectors to consider the lunar influence as either a stress or a beneficial factor when it comes to organizing their tasks. To address the link between lunar phases and agriculture from a scientific perspective, we conducted a review of textbooks and monographs used to teach agronomy, botany, horticulture and plant physiology; we also consider the physics that address the effects of the Moon on our planet. Finally, we review the scientific literature on plant development, specifically searching for any direct or indirect reference to the influence of the Moon on plant physiology. We found that there is no reliable, science-based evidence for any relationship between lunar phases and plant physiology in any plant–science related textbooks or peer-reviewed journal articles justifying agricultural practices conditioned by the Moon. Nor does evidence from the field of physics support a causal relationship between lunar forces and plant responses. Therefore, popular agricultural practices that are tied to lunar phases have no scientific backing. We strongly encourage teachers involved in plant sciences education to objectively address pseudo-scientific ideas and promote critical thinking. |
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| ISSN |
2073-4395 |
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no |
| Call Number |
GFZ @ kyba @ |
Serial |
3036 |
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