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Author |
Macgregor, C.J.; Pocock, M.J.O.; Fox, R.; Evans, D.M. |
Title |
Effects of street lighting technologies on the success and quality of pollination in a nocturnally pollinated plant |
Type |
Journal Article |
Year |
2019 |
Publication |
Ecosphere |
Abbreviated Journal |
Ecosphere |
Volume  |
10 |
Issue |
1 |
Pages |
e02550 |
Keywords |
Ecology; Animals; Plants |
Abstract |
Artificial light at night (ALAN) is an increasingly important driver of global change. Lighting directly affects plants, but few studies have investigated indirect effects mediated by interacting organisms. Nocturnal Lepidoptera are globally important pollinators, and pollen transport by moths is disrupted by lighting. Many street lighting systems are being replaced with novel, energy‐efficient lighting, with unknown ecological consequences. Using the wildflower Silene latifolia, we compared pollination success and quality at experimentally lit and unlit plots, testing two major changes to street lighting technology: in lamp type, from high‐pressure sodium lamps to light‐emitting diodes, and in lighting regime, from full‐night (FN) to part‐night (PN) lighting. We predicted that lighting would reduce pollination. S. latifolia was pollinated both diurnally and nocturnally. Contrary to our predictions, flowers under FN lighting had higher pollination success than flowers under either PN lighting or unlit controls, which did not significantly differ from each other. Lamp type, lighting regime, and distance from the light all significantly affected aspects of pollination quality. These results confirm that street lighting could affect plant reproduction through indirect effects mediated by nocturnal insects, and further highlight the possibility for novel lighting technologies to mitigate the effects of ALAN on ecosystems. |
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2150-8925 |
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GFZ @ kyba @ |
Serial |
2174 |
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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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2073-4395 |
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GFZ @ kyba @ |
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3036 |
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Author |
Giavi, S.; Blosch, S.; Schuster, G.; Knop, E. |
Title |
Artificial light at night can modify ecosystem functioning beyond the lit area |
Type |
Journal Article |
Year |
2020 |
Publication |
Scientific Reports |
Abbreviated Journal |
Sci Rep |
Volume  |
10 |
Issue |
1 |
Pages |
11870 |
Keywords |
plants; ecology |
Abstract |
Artificial light at night (ALAN) is a relatively new and rapidly increasing global change driver. While evidence on adverse effects of ALAN for biodiversity and ecosystem functioning is increasing, little is known on the spatial extent of its effects. We therefore tested whether ALAN can affect ecosystem functioning in areas adjacent to directly illuminated areas. We exposed two phytometer species to three different treatments of ALAN (sites directly illuminated, sites adjacent to directly illuminated sites, control sites without illumination), and we measured its effect on the reproductive output of both plant species. Furthermore, in one of the two plant species, we quantified pre-dispersal seed predation and the resulting relative reproductive output. Finally, under controlled condition in the laboratory, we assessed flower visitation and oviposition of the main seed predator in relation to light intensity. There was a trend for reduced reproductive output of one of the two plant species on directly illuminated sites, but not of the other. Compared to dark control sites, seed predation was significantly increased on dark sites adjacent to illuminated sites, which resulted in a significantly reduced relative reproductive output. Finally, in the laboratory, the main seed predator flew away from the light source to interact with its host plant in the darkest area available, which might explain the results found in the field. We conclude that ALAN can also affect ecosystem functioning in areas not directly illuminated, thereby having ecological consequences at a much larger scale than previously thought. |
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Department of Evolutionary Biology and Environmental Studies, University of Zurich, Winterthurerstr. 190, 8057, Zurich, Switzerland. eva.knop@ieu.uzh.ch |
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2045-2322 |
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PMID:32681056; PMCID:PMC7368033 |
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GFZ @ kyba @ |
Serial |
3076 |
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Author |
Boom, M.P.; Spoelstra, K.; Biere, A.; Knop, E.; Visser, M.E. |
Title |
Pollination and fruit infestation under artificial light at night:light colour matters |
Type |
Journal Article |
Year |
2020 |
Publication |
Scientific Reports |
Abbreviated Journal |
Sci Rep |
Volume  |
10 |
Issue |
1 |
Pages |
18389 |
Keywords |
Plants; Ecology |
Abstract |
Rapid human population growth and associated urbanization lead to increased artificial illumination of the environment. By changing the natural light-dark cycle, artificial lighting can affect the functioning of natural ecosystems. Many plants rely on insects in order to reproduce but these insects are known to be disturbed by artificial light. Therefore, plant-insect interactions may be affected when exposed to artificial illumination. These effects can potentially be reduced by using different light spectra than white light. We studied the effect of artificial lighting on plant-insect interactions in the Silene latifolia-Hadena bicruris system using a field set-up with four different light treatments: red, green, white and a dark control. We compared the proportion of fertilized flowers and fertilized ovules as well as the infestation of fruits by Hadena bicruris, a pollinating seed predator. We found no difference in the proportion of fertilized flowers among the treatments. The proportion of fruits infested by H. bicruris was however significantly higher under green and white light and a significantly lower proportion of fertilized ovules was found under green light. We show that artificial light with different colours impacts plant-insect interactions differently, with direct consequences for plant fitness. |
Address |
Department of Animal Ecology, Netherlands Institute of Ecology (NIOO-KNAW), P.O. Box 50, 6700 AB, Wageningen, The Netherlands. m.visser@nioo.knaw.nl |
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2045-2322 |
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PMID:33110135; PMCID:PMC7591485 |
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no |
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GFZ @ kyba @ |
Serial |
3189 |
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Kwak, M.; Je, S.; Cheng, H.; Seo, S.; Park, J.; Baek, S.; Khaine, I.; Lee, T.; Jang, J.; Li, Y.; Kim, H.; Lee, J.; Kim, J.; Woo, S. |
Title |
Night Light-Adaptation Strategies for Photosynthetic Apparatus in Yellow-Poplar (Liriodendron tulipifera L.) Exposed to Artificial Night Lighting |
Type |
Journal Article |
Year |
2018 |
Publication |
Forests |
Abbreviated Journal |
Forests |
Volume  |
9 |
Issue |
2 |
Pages |
74 |
Keywords |
Plants |
Abstract |
Plants can undergo external fluctuations in the natural light and dark cycle. The photosynthetic apparatus needs to operate in an appropriate manner to fluctuating environmental factors, especially in light. Yellow-poplar seedlings were exposed to nighttime artificial high-pressure sodium (HPS) lighting to evaluate night light-adaptation strategies for photosynthetic apparatus fitness relative to pigment contents, photosystem II photochemistry, photosynthetic parameters, histochemical analysis of reactive oxygen species, and plant biomass. As a result, seedlings exhibited dynamic changes including the enhancement of accessory pigments, the reduction of photosystem II photochemistry, increased stomatal limitation, downregulation of photosynthesis, and the decreased aboveground and belowground biomass under artificial night lighting. Histochemical analysis with 3,3′-diaminobenzidine (DAB) and nitroblue tetrazolium (NBT) staining indicates the accumulation of in situ superoxide radicals (O2−) and hydrogen peroxide (H2O2) in leaves exposed to the lowest level of artificial night lighting compared to control. Moreover, these leaves exposed to artificial night lighting had a lower nighttime respiration rate. These results indicated that HPS lighting during the night may act as a major factor as repressors of the fitness of photosynthesis and growth patterns, via a modification of the photosynthetic light harvesting apparatus. |
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1999-4907 |
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LoNNe @ kyba @ |
Serial |
1809 |
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