Take a guess….how many Eltham Copper Butterflies did we see last summer?
Posted on 2 April, 2020 by Ivan
The Eltham Copper Butterfly (ECB) is one of our most treasured and interesting threatened species, and we are fortunate enough to have the largest population in the world right here in the Mount Alexander region of central Victoria. In the past 12 months, the special little butterfly has attracted much-needed attention, attracting funding for three separate projects in our region.
Connecting Country obtained funding from the Mount Alexander Shire Council to increase community awareness and education regarding the butterfly, and to support citizen science monitoring in key locations to learn more about the local populations. We worked closely with local ecologists Elaine Bayes and Karl Just, who with support from Wettenhall Environment Trust continued their vital work on mapping local Eltham Copper Butterfly habitat and distribution. We also joined in the excellent Butterfly Celebration Day held in Castlemaine Botanical Gardens in November 2019. Our hope is that all Castlemaine residents now know about this amazing threatened species living on their doorstep!
Connecting Country delivered a popular community education workshop, and worked with ecologists Elaine and Karl to promote and coordinate four community monitoring sessions for Eltham Copper Butterfly around Castlemaine VIC over November 2019 to January 2020, when the adult butterflies were out and about (for details – click here). These events attracted excellent numbers of people keen to learn more about the life cycle of this butterfly and to participate in butterfly monitoring within local butterfly habitat. The aim was to support interested community members to learn how to monitor with expert guidance, providing skills for them to become citizen scientists, conduct more monitoring and (potentially) discover new populations.
photo by Connecting Country
Photo: Connecting country
Photo: Elaine Bayes
The Eltham Copper Butterfly is a small and attractive butterfly with bright copper coloring on the tops of its wings visible during the summer flight season (photo: Elaine Bayes)
Well, the results are in, the numbers crunched and the maps produced! We now have some great insight our local Eltham Copper Butterfly populations, including previously unexplored areas of potential butterfly habitat. In total 113 individual Eltham Copper Butterflies were observed in the prime flying period between 15 November 2019 and the 3 January 2020.
Monitoring results
Our monitoring experts, Elaine Bayes and Karl Just, provided the following summary of the results, accompanied by a very detailed and useful map of the areas they visited:
- The monitoring team searched, ranked and mapped all of Kalimna Park (170 hectares) for butterfly habitat in November 2019. Time spent to carry out rapid assessment was 48 hours.
- This work determined that out of 170 ha of Kalimna Park, 73.25 ha was classified as prime potential Eltham Copper Butterfly habitat (i.e., medium or high quality Sweet Bursaria habitat).
- Using Eltham Copper Butterfly habitat mapping, the team searched areas that were determined to have good butterfly habitat potential. Using this method the group located five new Eltham Copper Butterfly sub-populations and extended the area of known Eltham Copper Butterfly occupancy from 3 ha to 8 ha.
- In total 113 individual Eltham Copper Butterflies were observed in the prime flying period between 15 November 2019 and the 3 January 2020 (some of which may have been double-counted from resurveying same area).
- The total survey effort or time spent searching for butterflies in this period was 187 hours.
More about wonderful Eltham Copper Butterfly
Castlemaine’s Kalimna Park is home to the largest remaining population of the threatened Eltham Copper Butterfly in the world. To learn more about this fascinating little butterfly, including ecology, distribution and information on how to identify this species from similar look-alike butterflies – click here. Please enjoy the video below, courtesy of the N-danger-D Youtube Channel, that has some excellent footage of this wonderful butterfly and symbiotic ant species.
We would like to thank the Mount Alexander Shire Council and Wettenhall Environment Trust for providing the funding for these projects. We hope to continue to monitor Eltham Copper Butterfly and implement management actions to help our local butterfly populations thrive over the next decade and beyond.
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