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Author |
Brown, J., Frank A. |
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Title |
Light and Molt in Weaver Finches |
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Journal Article |
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Year |
1940 |
Publication |
The Auk |
Abbreviated Journal |
The Auk |
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Volume |
57 |
Issue |
4 |
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485-498 |
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Animals |
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0004-8038 |
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GFZ @ kyba @ |
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2366 |
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Author |
Lawrence, B.K.; Fehr, W.R. |
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Title |
Reproductive Response of Soybeans to Night Interruption1 |
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Journal Article |
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Year |
1981 |
Publication |
Crop Science |
Abbreviated Journal |
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Volume |
21 |
Issue |
5 |
Pages |
755 |
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Keywords |
Plants |
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Abstract |
Artificial lights may be used to delay flowering of soybean [Glycine max (L.) Merr.] cultivars. Previous research has suggested that night interruption imposed every other night would delay flowering as much as every-night interruption. Our objective was to evaluate the reproductive development of cultivars when exposed to night interruption every night compared with exposure every other night. One cultivar of each Maturity Group 00 through V was grown in the field at Ames, Iowa during 1978 and 1979. The four light treatments imposed every night or every other night included illumination with incandescent light from sunset to sunrise, 2300 to 0030 hours, 0030 to 0200 hours, or 0200 to 0330 hours. Control plots were not exposed to artificial light.
The average number of days that reproductive development was delayed beyond the control was twice as great for the every-night treatments as for the every-other-night treatments. Illumination from sunset to sunrise delayed reproductive development significantly more than the treatments of night interruption for 1.5 hours. Night interruption near the end of the dark period (0200 to 0330 hours) delayed reproductive development more than the earlier interruptions.
The results did not support the hypothesis that light treatments every other night would delay reproductive development as much as every-night interruptions. The lighting regime needed to delay reproductive development will depend on the photoperiod requirements of the cultivars and duration of the delay that is desired. |
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0011-183X |
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IDA @ intern @ |
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2367 |
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Author |
Thompson, E.K.; Cullinan, N.L.; Jones, T.M.; Hopkins, G.R. |
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Title |
Effects of artificial light at night and male calling on movement patterns and mate location in field crickets |
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Journal Article |
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Year |
2019 |
Publication |
Animal Behaviour |
Abbreviated Journal |
Animal Behaviour |
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Volume |
158 |
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Pages |
183-191 |
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Animals |
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Anthropogenic factors, such as artificial light at night (ALAN), are increasingly linked to significant modifications in animal behaviours, such as foraging or migration. However, few studies have investigated directly whether the presence of ALAN affects the ability to find a mate (mate location). One direct effect of the presence of ALAN is that it can create a light barrier in an otherwise dark environment. This may have significant behavioural implications for nocturnally active species if it affects their ability to respond to potential mates. Our study, using the acoustically orienting Australian black field cricket, Teleogryllus commodus, determined experimentally whether the presence of a fragmented light environment influenced movement patterns of virgin females and males. Moreover, given the importance of male song for reproductive outcomes in this species, we assessed simultaneously whether such behaviours were modified by the presence of a male attraction call. We found that while initiation of movement was slower in the presence of ALAN, the behavioural shifts associated with its presence were relatively small compared to the influence of a broadcast male attraction call. The response to the male attraction call was typically stronger for females than for males, but both males and females modified aspects of behaviour when it was present regardless of whether their immediate environment was fragmented by artificial light at night or not. Artificial light at night may alter subtle aspects of movement and mating behaviour in this species, but ultimately does not provide a barrier to movement or mate location. |
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0003-3472 |
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GFZ @ kyba @ |
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2752 |
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Author |
Teare, S. W. |
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Title |
The night sky brightness at Mount Wilson Observatory |
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Journal Article |
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Year |
2000 |
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The Observatory |
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120 |
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313-317 |
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Skyglow |
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2001 |
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Mammola, S.; Isaia, M.; Demonte, D.; Triolo, P.; Nervo, M. |
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Title |
Artificial lighting triggers the presence of urban spiders and their webs on historical buildings |
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Journal Article |
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Year |
2018 |
Publication |
Landscape and Urban Planning |
Abbreviated Journal |
Landscape and Urban Planning |
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Volume |
180 |
Issue |
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Pages |
187-194 |
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Keywords |
Animals; Lighting |
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Abstract |
Different spider species living in the urban environment spin their webs on building facades. Due to air pollution, web aggregations entrap dirt particles over time, assuming a brownish-greyish colouration and thus determining an aesthetic impact on buildings and street furniture. In Europe, the most common species causing such an aesthetic nuisance is Brigittea civica (Lucas) (Dictynidae). In spite of the socio-economical relevance of the problem, the ecological factors driving the proliferation of this species in the urban environment are poorly described and the effectiveness of potential cleaning activities has never been discussed in scientific literature. Over one year, we studied the environmental drivers of B. civica webs in the arcades of the historical down-town district of Turin (NW-Italy). We selected a number of sampling plots on arcade ceilings and we estimated the density of B. civica webs by means of digital image analysis. In parallel, we collected information on a number of potential explanatory variables driving the arcade colonization, namely artificial lighting at night, substrate temperature, distance from the main artificial light sources and distance from the river. Regression analysis showed that the coverage of spider webs increased significantly at plots with higher light intensity, with a major effect related to the presence of historical lampposts with incandescent lamps rather than halogen lamps. We also detected a seasonal variation in the web coverage, with significant higher values in summer. Stemming from our results, we are able to suggest good practices for the containment of this phenomenon. |
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0169-2046 |
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Call Number |
GFZ @ kyba @ |
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2002 |
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