| Records |
| Author |
ffrench-Constant, R.; Somers-Yeates, R.; Bennie, J.; Economou, T.; Hodgson, D.; Spalding, A.; McGregor, P. |
| Title |
Light pollution is associated with earlier tree budburst across the United Kingdom |
Type |
Journal Article |
| Year |
2016 |
Publication |
Proceedings of the Royal Society B: Biological Sciences |
Abbreviated Journal |
Proc Roy Soc B Biol Sci |
| Volume |
283 |
Issue |
1833 |
Pages  |
1-9 |
| Keywords |
Plants; light pollution, phenology, species interactions, tree budburst, temperature, urban heat islands; United Kingdom |
| Abstract |
The ecological impact of night-time lighting is of concern because of its well-demonstrated effects on animal behaviour. However, the potential of light pollution to change plant phenology and its corresponding knock-on effects on associated herbivores are less clear. Here, we test if artificial lighting can advance the timing of budburst in trees. We took a UK-wide 13 year dataset of spatially referenced budburst data from four deciduous tree species and matched it with both satellite imagery of night-time lighting and average spring temperature. We find that budburst occurs up to 7.5 days earlier in brighter areas, with the relationship being more pronounced for later-budding species. Excluding large urban areas from the analysis showed an even more pronounced advance of budburst, confirming that the urban ‘heat-island’ effect is not the sole cause of earlier urban budburst. Similarly, the advance in budburst across all sites is too large to be explained by increases in temperature alone. This dramatic advance of budburst illustrates the need for further experimental investigation into the impact of artificial night-time lighting on plant phenology and subsequent species interactions. As light pollution is a growing global phenomenon, the findings of this study are likely to be applicable to a wide range of species interactions across the world. |
| Address |
Centre for Ecology and Conservation, and 2 Environment and Sustainability Institute, University of Exeter, Penryn TR10 9EZ, UK; rf222(at)exeter.ac.uk |
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| Publisher |
Royal Society |
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| Language |
English |
Summary Language |
English |
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| Call Number |
IDA @ john @ |
Serial |
1472 |
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| Author |
Maggi, E.; Benedetti-Cecchi, L. |
| Title |
Trophic compensation stabilizes marine primary producers exposed to artificial light at night |
Type |
Journal Article |
| Year |
2018 |
Publication |
Marine Ecology Progress Series |
Abbreviated Journal |
Mar. Ecol. Prog. Ser. |
| Volume |
606 |
Issue |
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Pages |
1-5 |
| Keywords |
Plants; Animals; Ecology |
| Abstract |
Artificial light at night (ALAN) is a widespread phenomenon along coastal areas. Despite increasing evidence of pervasive effects of ALAN on patterns of species distribution and abundance, the potential of this emerging threat to alter ecological processes in marine ecosystems has remained largely unexplored. Here, we show how exposure to white LED lighting, comparable to that experienced along local urbanized coasts, significantly enhanced the impact of grazing gastropods on epilithic microphytobenthos (MPB). ALAN increased both the photosynthetic biomass of MPB and the grazing pressure of gastropods, such that consumers compensated for the positive effect of night lighting on primary producers. Our results indicate that trophic interactions can provide a stabilizing compensatory mechanism against ALAN effects in natural food webs. |
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0171-8630 |
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GFZ @ kyba @ |
Serial |
2063 |
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| Author |
Ebisawa, M.; Shoji, K.; Kato, M.; Shimomura, K.; Goto, F.; Yoshihara, T. |
| Title |
Supplementary Ultraviolet Radiation B Together with Blue Light at Night Increased Quercetin Content and Flavonol Synthase Gene Expression in Leaf Lettuce (Lactuca sativa L.) |
Type |
Journal Article |
| Year |
2008 |
Publication |
Environment Control in Biology |
Abbreviated Journal |
Environ. Control Biol. |
| Volume |
46 |
Issue |
1 |
Pages |
1-11 |
| Keywords |
Plants |
| Abstract |
Establishment of an effective supplementary lighting procedure is necessary to increase the value of leaf lettuce grown using a hydroponic method involving a low production cost. In leaf lettuce extracts, quercetin, one of the flavonoids, was isolated and identified. It was investigated that quercetin has important functions that can be used as a dietary supplement. Flavonol synthase (FLS) is a key enzyme involved in quercetin biosynthesis, catalyzes the conversion of dihydroquercetin to quercetin. Therefore, we determined the sequence of the flavonol synthase gene (FLS) in red leaf lettuce. We harvested leaf lettuce grown using supplementary light sources, such as ultraviolet radiation B (UV-B), ultraviolet radiation A, blue, and red lamps during the night. It is noteworthy that FLS expression and the quercetin content were particularly increased to a greater extent in young leaves than in mature leaves when UV-B and blue light were used simultaneously at night. We suggest that UV-B with blue light is used simultaneously at night for producing leaf lettuce with high quercetin content. |
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1880-554X |
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GFZ @ kyba @ |
Serial |
2799 |
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| Author |
Tinus, R. W. |
| Title |
Effects of Extended Photoperiod on Southern Rocky Mountain Engelmann Spruce and Douglas-fir |
Type |
Journal Article |
| Year |
1981 |
Publication |
Tree Planters' Notes |
Abbreviated Journal |
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| Volume |
32 |
Issue |
4 |
Pages |
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| Keywords |
Plants |
| Abstract |
Four sources of Engelmann spruce and two of Douglas-fir were grown under eight different extended photoperiod regimes. Incandescent light 1 minute of every 15 at night at 270 lux was more effective than continuous incandescent at 1200 lux or intermittent fluorescent at 950 lux at preventing bud dormancy and maintaining continuous height growth. |
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IDA @ intern @ |
Serial |
2368 |
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| Author |
Chen, C. L.; Su, Y. H.; Liu, C.J.; Lee, Y.C. |
| Title |
Effect of Night Illumination on Growth and Yield of Soybean |
Type |
Journal Article |
| Year |
2009 |
Publication |
Journal of Taiwan Agricultural Research |
Abbreviated Journal |
J. of Taiwan Agricultural Res. |
| Volume |
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Issue |
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Pages |
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| Keywords |
Plants; soybeans; Taiwan |
| Abstract |
To evaluate the potential of soybean as a crop for bio-fuel in Taiwan, field experiments were conducted in 2006 across the island, using an Australian variety ‘Leichardt’. This study was one of the field experiments at Hemei Township, Changhua County. Soybean was seeded by hand-spreading in the fall of 2006 and harvested in 2007. Results showed that seeding of soybean by hand-spreading affected uniformity of seed germination and caused high variations in yield in this field. Seed yield of soybean reached 770 kg ha-1 under good pest management and disease control. The study also showed that night illumination is an important factor affecting growth and yield of soybean. Plants growing near the roadside (within 10–20 m) were exposed to the night light, resulting in prolonged vegetative growth and delayed blossom period for about 1 to 4 weeks. Therefore, such plants suffered from poor pod filling due to low temperature stress at reproduction stage and delayed the harvest period for about 6 weeks. Nevertheless, seed yield of soybean plants exposed to the night illumination reached 1000 kg ha-1, which was slightly higher than soybean plants without exposuring to the night illumination. |
| Address |
chiling(at)tari.gov.tw |
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Taiwan Agricultural Research Institute |
Place of Publication |
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| Language |
Chinese |
Summary Language |
English |
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no |
| Call Number |
IDA @ john @ |
Serial |
1395 |
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