Helena Virić Gašparić1ORCID logo, Katarina M. Mikac2ORCID logo Ivana Pajač Živković1ORCID logo,
Bruno Krehula1, Matej Orešković1, Marija A. Galešić1ORCID logo, Pave Ninčević1,
Filip Varga3,4ORCID logo and Darija Lemić1ORCID logo

1University of Zagreb, Faculty of Agriculture,
  Division of Phytomedicine, Department for Agricultural Zoology
  Zagreb, Croatia
2University of Wollongong, School of Earth, Atmospheric and Life Sciences,
  Centre for Sustainable Ecosystem Solutions
  Wollongong, Australia
3University of Zagreb, Faculty of Agriculture,
  Division of Plant Science Department of Seed Science and Technology
  Zagreb, Croatia
4Centre of Excellence for Biodiversity and Molecular Plant Breeding
  Zagreb, Croatia

INDECS 20(2), 112-124, 2022
DOI 10.7906/indecs.20.2.4
Full text available in pdf pdf icon and xml XML icon formats.

Received: 14th January 2022.
Accepted: 16th March 2022.
Regular article


Fireflies (Coleoptera: Lampyridae), with more than 2 000 species in 100 genera worldwide, are a charismatic nocturnal species. Although popular in different cultures because of their association with warm summer evenings in childhood, fireflies are an under-researched insect. Like numerous other insects worldwide, fireflies have experienced declines in their distribution and abundance. Anthropogenic impacts and climate change are likely to influence their development, reproduction, and survival. A project called "Krešo Krijesnica" (eng. "Krešo the Firefly"), used a Citizen Science model of data collection, to determine where are the fireflies located and how abundant are they throughout Croatia. Citizen Science involves the participation of the general or non-scientific public in data collection so determining the basic demographic profile of the citizen scientists involved was also one of the project goals. During the first phase of the project (2019-2021), data on fireflies were provided by citizen scientists through a formal survey on social media (Facebook, Instagram). Phase two aims to open the fireflies' datasets to the public through various open data portals. In the three years of the project, more than 16 000 records of fireflies were collected and analysed from over 1800 sightings. Descriptive statistics showed that the highest firefly population density was found in central Croatia, which is consistent with the greater number of people living in this area and thus a greater chance of firefly detection. Higher number pf female reporters were noted during the project. The dataset collected in this Citizen Science project presents a valuable source of information to the scientific community, especially in the field of entomology, conservation biology and ecology.

biodiversity conservation, citizen science campaign, fireflies, Krešo the Firefly, Lampyridae, Coleoptera


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