prikaz prve stranice dokumenta Influence of artificial lighting on feeding and movement of the purple sea urchin (Paracentrotus lividus)
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master's thesis
Influence of artificial lighting on feeding and movement of the purple sea urchin (Paracentrotus lividus)
Zagreb: University of Zagreb, Faculty of Science, 2022. urn:nbn:hr:217:700521
Šiljeg, Anamarija
University of Zagreb
Faculty of Science
Department of Biology

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Šiljeg, A. (2022). Influence of artificial lighting on feeding and movement of the purple sea urchin (Paracentrotus lividus) (Master's thesis). Zagreb: University of Zagreb, Faculty of Science. Retrieved from https://urn.nsk.hr/urn:nbn:hr:217:700521

Šiljeg, Anamarija. "Influence of artificial lighting on feeding and movement of the purple sea urchin (Paracentrotus lividus)." Master's thesis, University of Zagreb, Faculty of Science, 2022. https://urn.nsk.hr/urn:nbn:hr:217:700521

Šiljeg, Anamarija. "Influence of artificial lighting on feeding and movement of the purple sea urchin (Paracentrotus lividus)." Master's thesis, University of Zagreb, Faculty of Science, 2022. https://urn.nsk.hr/urn:nbn:hr:217:700521

Šiljeg, A. (2022). 'Influence of artificial lighting on feeding and movement of the purple sea urchin (Paracentrotus lividus)', Master's thesis, University of Zagreb, Faculty of Science, accessed 22 January 2025, https://urn.nsk.hr/urn:nbn:hr:217:700521

Šiljeg A. Influence of artificial lighting on feeding and movement of the purple sea urchin (Paracentrotus lividus) [Master's thesis]. Zagreb: University of Zagreb, Faculty of Science; 2022 [cited 2025 January 22] Available at: https://urn.nsk.hr/urn:nbn:hr:217:700521

A. Šiljeg, "Influence of artificial lighting on feeding and movement of the purple sea urchin (Paracentrotus lividus)", Master's thesis, University of Zagreb, Faculty of Science, Zagreb, 2022. Available at: https://urn.nsk.hr/urn:nbn:hr:217:700521

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Metadata
TitleInfluence of artificial lighting on feeding and movement of the purple sea urchin (Paracentrotus lividus)
Title (croatian)Utjecaj umjetnog svjetla na hranjenje i kretanje hridinskog ježinca (Paracentrotus lividus)
AuthorAnamarija Šiljeg
MentorPetar Kružić (mentor)
Committee memberPetar Kružić (predsjednik povjerenstva)
Committee memberSven Jelaska (član povjerenstva)
Committee memberJasna Lajtner (član povjerenstva)
Committee memberIvana Maguire (član povjerenstva)
GranterUniversity of Zagreb
Faculty of Science
(Department of Biology)
Zagreb
Defense date and country2022-02-23, Croatia
Scientific / art field,
discipline and subdiscipline		NATURAL SCIENCES
Biology
Abstract
Light pollution is an emerging anthropogenic stressor for marine ecosystems. About 20% of the world’s coastlines are affected by artificial light at night - with exposure levels expected to increase as human populations grow. Despite the omnipresence of artificial light along urbanized coastlines, a comprehensive understanding of light pollution effects in marine environments is still lacking. The aim of this study was to investigate the influence of artificial light at night on the feeding and activity of benthic invertebrate Paracentrotus lividus (Lamarck 1816). The animals were exposed to a light intensity of 30 lux (first and second experiment) and 60 lux (third experiment). I conducted three temporally separate experiments which focused on feeding rates and activity patterns under different lengths of exposure to nighttime lighting. I found that exposure to artificial light at night does not influence the feeding rate in P. lividus. However, the light has an effect on the activity pattern. In the presence of artificial light at night, the sea urchin starts to hide more during the nighttime. Under the predicted increase of artificial light at night this knowledge is key to understand future changes in benthic communities.
Abstract (english)
Svjetlosno onečišćenje je novi antropogeni stresor za morske ekosustave. Oko 20 % svjetskih obala noću je pod utjecajem umjetnog svjetla, a očekuje se da će se razina izloženosti povećati kako ljudska populacija raste. Unatoč sveprisutnosti umjetne svjetlosti duž urbaniziranih obala, još uvijek nedostaje sveobuhvatno razumijevanje učinaka svjetlosnog onečišćenja u morskim okolišima. Cilj ovog istraživanja bio je istražiti utjecaj umjetnog svijetla noću na konzumaciju hrane i aktivnost bentoskog beskralježnjaka Paracentrotus lividus (Lamarck 1816). Jedinke su bile izložene intenzitetu svjetlosti od 30 luksa (prvi i drugi pokus) i 60 luksa (treći pokus). Provela sam tri vremenski odvojena pokusa koji su se fokusirali na konzumaciju hrane i aktivnosti pod različitim duljinama izlaganja noćnom svjetlu. Rezultati su pokazali da izlaganje umjetnom svjetlu noću P. lividusa ne utječe na količinu konzumirane hrane. Međutim, svjetlost ima utjecaj na aktivnosti, u prisutnosti umjetnog svjetla noću hidrinski ježinac se počinje više skrivati. Pod predviđanjima povećanjem umjetnog svjetla noću, ovo znanje je ključno za razumijevanje budućih promjena u bentoskim zajednicama.
Keywords
Keywords (english)
Languageenglish
URN:NBNurn:nbn:hr:217:700521
Study programmeTitle: Ecology
Study programme type: university
Study level: graduate
Academic / professional title: magistar/magistra ekologije i zaštite prirode (magistar/magistra ekologije i zaštite prirode)
Type of resourceText
File originBorn digital
Access conditionsOpen access
Terms of useLicence In copyright icon
RepositoryRepository of the Faculty of Science
Created on2022-03-23 13:12:11

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