Senior Research Ecologist
Gary’s role as a Senior Research Ecologist includes leading fieldwork, analysis and reporting on a variety of relevant projects within the Wetland and Marine Team.
Interests & Responsibilities
Gary has worked on a range of projects within the BTO, both in terrestrial and marine environments, and has particular strengths in field ornithology and spatial analysis. He is an experienced bird ringer and trainer and has used a wide variety of novel tracking techniques, particularly with gulls, waders and wildfowl.
His main interest in applied ecology include using high quality evidence for decision making in wildlife management, especially where potential conflicts may occur such as the construction of renewable energy developments or collision risks in the aviation industry. Other interests include the assessment and management of invasive non-native species and their interaction with native species and habitats.
PhD Ecology, Imperial College London - ‘Post-release assessment of Aphalara itadori (Hemiptera: Psyllidae) as a classical biological control agent of Fallopia japonica (Polygonaceae)’ – 2011- 2015
MRes Entomology, Imperial College London - 2010
BSc Zoology, University of Reading - 2009
Recent BTO Publications
2022. Urban and coastal breeding lesser black-backed gulls (Larus fuscus) segregate by foraging habitat. Ibis View at journal website (DOI: doi.org/10.1111/ibi.13109)
2022. Belfast’s urban gulls: an assessment of breeding populations, breeding season movements and winter population. Research Report no. 734. British Trust for Ornithology, Thetford ISBN: 978-1-912642-26-7 52pp
2022. A review of the BTO/RSPB/JNCC Wetland Bird Survey (WeBS) Low Tide Counts scheme with recommendations for its future operation.. Research Report no. 744. British Trust for Ornithology, Thetford ISBN: 978-1-912642-35-9 52pp
2022. Hotspots in the grid: avian sensitivity and vulnerability to collision risk from energy infrastructure interactions in Europe and north Africa. Journal of Applied Ecology View at journal website (DOI: 10.1111/1365-2664.14160) 17pp
2022. Investigating avoidance and attraction responses in Lesser Black-backed Gulls Larus fuscus to offshore wind farms. Marine Ecology Progress Series 686 View at journal website (DOI: 10.3354/meps13964)
2022. Habitat selection and specialisation of Herring Gulls during the non-breeding season. Frontiers in Marine Science 9 View at journal website (DOI: 10.3389/fmars.2022.816881) 17pp
Clewley, G. D., & Wright, D. J. 2014. Winter hosts of Aphalara itadori (Hemiptera: Psyllidae), a classical biological control agent of Fallopia japonica (Polygonaceae), in the UK. Biocontrol Science and Technology, 24, 1197-1201.
Clewley, G. D., Eschen, R., Shaw, R. H., & Wright, D. J. 2012. The effectiveness of classical biological control of invasive plants. Journal of Applied Ecology, 49, 1287-1295.
Content Related to Gary Clewley
Urban and coastal breeding lesser black-backed gulls (Larus fuscus) segregate by foraging habitat