- History of science.
- Women in science.
- Paleoenvironmental analysis.
- Natural history.
- Heritage research.
- Links to climate change and sustainability.
For Environment Platform Wales: Resilience in the Welsh Uplands – an artistic perspective (2020).
Catherine is researching the life of Dr. Kathleen Carpenter, a pioneering freshwater ecologist at Aberystwyth University – in association with Anglesey History.
Duigan, C. (2019). Carpenter’s Food Relationships 1925 – The First British Freshwater Food Web. Archives of Natural History, 46(1): 160-163.
Duigan, C. (2018) Who was….Kathleen Carpenter? The Biologist, 65(3): 22-25.
Advisor to Mary Gillham Archive Project.
Weather Extremes Guest Blog: Duigan, C. & S. Davies (2015). Waltzing on Water.