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Author Russo, D.; Cosentino, F.; Festa, F.; De Benedetta, F.; Pejic, B.; Cerretti, P.; Ancillotto, L.
Title (up) Artificial illumination near rivers may alter bat-insect trophic interactions Type Journal Article
Year 2019 Publication Environmental Pollution (Barking, Essex : 1987) Abbreviated Journal Environ Pollut
Volume 252 Issue Pt B Pages 1671-1677
Keywords Animals
Abstract Artificial illumination at night represents an increasingly concerning threat to ecosystems worldwide, altering persistence, behaviour, physiology and fitness of many organisms and their mutual interactions, in the long-term affecting ecosystem functioning. Bats are very sensitive to artificial light at night because they are obligate nocturnal and feed on insects which are often also responsive to lights. Here we tested the effects of LED lighting on prey-predator interactions at riverine ecosystems, using bats and their insect prey as models, and compared bat and insect reactions in terms of bat activity and prey insect abundance and diversity, respectively, on artificially lit vs. unlit nights. Artificial light influenced both insect and bat assemblages in taxon-specific directions: insect abundances increased at lit sites, particularly due to an increase in small dipterans near the light source. Composition of insect assemblages also differed significantly between lit and unlit sites. Total bat activity declined at lit sites, but this change was mainly due to the response of the most abundant species, Myotis daubentonii, while opportunistic species showed no reaction or even an opposite pattern (Pipistrellus kuhlii). We show that artificial lighting along rivers may affect trophic interactions between bats and insects, resulting in a profound alteration of community structure and dynamics.
Address Wildlife Research Unit, Dipartimento di Agraria, Universita degli Studi di Napoli Federico II, via Universita, 100, 80055, Portici, Italy
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Series Volume Series Issue Edition
ISSN 0269-7491 ISBN Medium
Area Expedition Conference
Notes PMID:31284209 Approved no
Call Number GFZ @ kyba @ Serial 2572
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Author Moaraf, S.; Vistoropsky, Y.; Pozner, T.; Heiblum, R.; Okuliarova, M.; Zeman, M.; Barnea, A.
Title (up) Artificial light at night affects brain plasticity and melatonin in birds Type Journal Article
Year 2019 Publication Neuroscience Letters Abbreviated Journal Neurosci Lett
Volume in press Issue Pages 134639
Keywords Animals; Artificial Light At Night (ALAN); cell proliferation; circadian cycle; melatonin; neuronal densities; zebra finches (Taeniopygia guttata)
Abstract Artificial light at night (ALAN), which disrupts the daily cycle of light, has vast biological impacts on all organisms, and is also associated with several health problems. The few existing studies on neuronal plasticity and cognitive functions in mammals indicate that a disruption of the circadian cycle impairs learning and memory and suppresses neurogenesis. However, nothing is known about the effect of ALAN on neuronal plasticity in birds. To this end, zebra finches (Taeniopygia guttata) were exposed to ecologically relevant ALAN intensities (0.5, 1.5 and 5 lux), treated with BrdU to quantify cell proliferation in their ventricular zone (VZ), and compared to controls that were kept under dark nights. We found, in our diurnal birds, that ALAN significantly increased cell proliferation in the VZ. However, neuronal densities in two brain regions decreased under ALAN, suggesting neuronal death. In addition, ALAN suppressed nocturnal melatonin production in a dose-dependent manner, and might also increase body mass. Taken together, our findings add to the notion of the deleterious effect of ALAN.
Address Department of Natural and Life Sciences, The Open University of Israel, Ra'anana, 43107, Israel
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Series Volume Series Issue Edition
ISSN 0304-3940 ISBN Medium
Area Expedition Conference
Notes PMID:31760086 Approved no
Call Number GFZ @ kyba @ Serial 2760
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Author Alessandro Manfrin, Gabriel Singer, Stefano Larsen, Nadine Weiss, Roy H. A. van Grunsven, Nina-Sophie Weiss, Stefanie Wohlfahrt, Michael T. Monaghan and Franz Hölker
Title (up) Artificial light at night affects organism flux across ecosystem boundaries and drives community structure in the recipient ecosystem Type Journal Article
Year 2017 Publication Frontiers in Environmental Science Abbreviated Journal
Volume 5 Issue 61 Pages
Keywords Animals; Ecology
Abstract Artificial light at night (ALAN) is a widespread alteration of the natural environment that can affect the functioning of ecosystems. ALAN can change the movement patterns of freshwater animals that move into the adjacent riparian and terrestrial ecosystems, but the implications for local riparian consumers that rely on these subsidies are still unexplored. We conducted a two-year field experiment to quantify changes of freshwater-terrestrial linkages by installing streetlights in a previously light-native riparian area adjacent to an agricultural drainage ditch. We compared the abundance and community composition of emerging aquatic insects, flying insects, and ground-dwelling arthropods with an unlit control site. Comparisons were made within and between years using generalized least squares and a BACI design (Before-After Control-Impact). Aquatic insect emergence, the proportion of flying insects that were aquatic in origin, and the total abundance of flying insects all increased in the ALAN-illuminated area. The abundance of several night-active ground-dwelling predators (Pachygnatha clercki, Trochosa sp., Opiliones) increased under ALAN and their activity was extended into the day. Conversely, the abundance of nocturnal ground beetles (Carabidae) decreased under ALAN. The changes in composition of riparian predator and scavenger communities suggest that the increase in aquatic-to-terrestrial subsidy flux may cascade through the riparian food web. The work is among the first studies to experimentally manipulate ALAN using a large-scale field experiment, and provides evidence that ALAN can affect processes that link adjacent ecosystems. Given the large number of streetlights that are installed along shorelines of freshwater bodies throughout the globe, the effects could be widespread and represent an underestimated source of impairment for both aquatic and riparian systems.
Address
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Notes Approved no
Call Number LoNNe @ kyba @ Serial 1746
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Author Pu, G.; Zeng, D.; Mo, L.; Liao, J.; Chen, X.
Title (up) Artificial Light at Night Alleviates the Negative Effect of Pb on Freshwater Ecosystems Type Journal Article
Year 2019 Publication International Journal of Molecular Sciences Abbreviated Journal Int J Mol Sci
Volume 20 Issue 6 Pages
Keywords Ecology; freshwater; ecosystems; metal pollution
Abstract Artificial light at night (ALAN) is an increasing phenomenon worldwide that can cause a series of biological and ecological effects, yet little is known about its potential interaction with other stressors in aquatic ecosystems. Here, we tested whether the impact of lead (Pb) on litter decomposition was altered by ALAN exposure using an indoor microcosm experiment. The results showed that ALAN exposure alone significantly increased leaf litter decomposition, decreased the lignin content of leaf litter, and altered fungal community composition and structure. The decomposition rate was 51% higher in Pb with ALAN exposure treatments than in Pb without ALAN treatments, resulting in increased microbial biomass, beta-glucosidase (beta-G) activity, and the enhanced correlation between beta-G and litter decomposition rate. These results indicate that the negative effect of Pb on leaf litter decomposition in aquatic ecosystems may be alleviated by ALAN. In addition, ALAN exposure also alters the correlation among fungi associated with leaf litter decomposition. In summary, this study expands our understanding of Pb toxicity on litter decomposition in freshwater ecosystems and highlights the importance of considering ALAN when assessing environmental metal pollutions.
Address College of Life Science, Guangxi Normal University, Guilin 541006, China. chenxx7276@163.com
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Language English Summary Language Original Title
Series Editor Series Title Abbreviated Series Title
Series Volume Series Issue Edition
ISSN 1422-0067 ISBN Medium
Area Expedition Conference
Notes PMID:30884876; PMCID:PMC6471329 Approved no
Call Number GFZ @ kyba @ Serial 2334
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Author Pu, G.; Zeng, D.; Mo, L.; Liao, J.; Chen, X.; Qiu, S.; Lv, Y.
Title (up) Artificial light at night alter the impact of arsenic on microbial decomposers and leaf litter decomposition in streams Type Journal Article
Year 2019 Publication Ecotoxicology and Environmental Safety Abbreviated Journal Ecotoxicol Environ Saf
Volume in press Issue Pages 110014
Keywords Ecology; Microbes; Fungal communities and biodiversity; Illumina sequencing; Light pollution; Litter decomposition; Microbiological oxidation
Abstract Artificial light at night (ALAN, also known as light pollution) has been proved to be a contributor to environmental change and a biodiversity threat worldwide, yet little is known about its potential interaction with different metal pollutants, such as arsenic (As), one of the largest threats to aquatic ecosystems. To narrow this gap, an indoor microcosm study was performed using an ALAN simulation device to examine whether ALAN exposure altered the impact of arsenic on plant litter decomposition and its associated fungi. Results revealed that microbial decomposers involved in the conversion of As(III) to As(V), and ALAN exposure enhanced this effect; ALAN or arsenic only exposure altered fungal community composition and the correlations between fungi species, as well as stimulated or inhibited litter decomposition, respectively. The negative effects of arsenic on the decomposition of Pterocarya stenoptera leaf litter was alleviated by ALAN resulting in the enhanced photodegradation of leaf litter lignin and microbiological oxidation of As(III) to As(V), the increased microbial biomass and CBH activity, as well as the enhanced correlations between CBH and litter decomposition rate. Overall, results expand our understanding of ALAN on environment and highlight the contribution of ALAN to the toxicity of arsenic in aquatic ecosystems.
Address School of Pharmacy and Biological Sciences, Weifang Medical University, Weifang, 261053, China. Electronic address: njandgl@163.com
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Series Volume Series Issue Edition
ISSN 0147-6513 ISBN Medium
Area Expedition Conference
Notes PMID:31810590 Approved no
Call Number GFZ @ kyba @ Serial 2777
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