Tim Bonebrake

@bonebraking.bsky.social

Professor at HKU - Director of the School of Biol Sci - Ecologist. Conservation Biologist. Environmental Scientist.

New paper out in Evolutionary Ecology by Michel Dongmo - habitat and plasticity of thermal tolerance in tropical Bicyclus butterflies - thrilled to see it out, a lot of interesting results packed into this one link.springer.com/article/10.1...

Habitat effects on local adaptation and plasticity of thermal tolerance across life stages in tropical Bicyclus butterflies - Evolutionary Ecology

Climate change impacts on ectotherms will be a consequence of an interplay between species-specific evolutionary effects, population-level local adaptation, and developmental or plastic effects in individuals. While variation in thermal tolerance resulting from species physiological differences and local adaptation are well researched, how variation in plasticity across habitats might impact vulnerability to climate change remains poorly understood. We studied microhabitat (understory vs. open) distributions and the plasticity in thermal tolerance of four Bicyclus butterfly species across forest and ecotone (savanna-forest transition zone) habitats in Cameroon. For each species, we performed common garden experiments at two stable temperature regimes (20 and 30 °C) and quantified larval and adult thermal tolerance. We found clear differences in distributions across species such that two species were more associated with open microhabitats (B. dorothea and B. vulgaris) while two others were more understory associated (B. sanaos and B. sandace), with variation across seasons and habitats (forest vs. ecotone). Three species exhibited higher plasticity in critical thermal maximum (CTmax) in the ecotone relative to the forest indicating the importance of the interaction between habitat and developmental temperatures in influencing thermal tolerance. Microhabitat distributions were also consistent with trends in thermal tolerance; the most understory-associated species had both the lowest average CTmax and lowest plasticity in CTmax in the ecotone. Our findings suggest that microclimate and thermal adaptation shape plastic responses to thermal tolerance, and these factors will likely result in heterogenous responses to climatic change for tropical insects.

link.springer.com

VIDEO: Bird call contest seeks to boost conservation awareness in Hong Kong. The Hong Kong Bird Watching Society holds its first-ever bird call contest with people taking to the stage to mimic the calls of birds including the koel, brown fish owl, and Asian barred owlet

New article out today in Nature - intensified El Niño events under climate change appear to be chipping away at tropical forest arthropod diversity. This is already leading to substantial losses in arthropod function in primary forests across the tropics. rdcu.be/ezAxP

Stronger El Niños reduce tropical forest arthropod diversity and function

Nature - Time-series data from tropical forests tracking weather and declines in arthropod diversity and function show that fluctuations in species were largely dependent on their El Niño...

rdcu.be

New in Scientific Data - Spatial occurrence records and distributions of tropical Asian butterflies www.nature.com/articles/s41... collab w/ many great colleagues, led by Eugene and Emily… optimistic that the data will lead to concrete conservation actions for Asian butterflies

Spatial occurrence records and distributions of tropical Asian butterflies - Scientific Data

Scientific Data - Spatial occurrence records and distributions of tropical Asian butterflies

nature.com

The insanity of being a fire ecologist in the epicenter of a major fire event, bags packed and ready to evacuate, watching active fire from my window, while taking media requests and explaining to the public, for the 100,000th time how climate change is largely responsible for this

good songs to mop to when the lab floods - Flood (Jars of Clay), You Part the Waters (Cake), Texas Flood (Stevie Ray Vaughan), When the Levee Breaks (Led Zeppelin), Black Water (Doobie Brothers)