Publication Details

Category Text Publication
Reference Category Journals
DOI 10.1111/geb.13473
Licence creative commons licence
Title (Primary) The conservation impacts of ecological disturbance: Time-bound estimates of population loss and recovery for fauna affected by the 2019–2020 Australian megafires
Author Legge, S.; Rumpff, L.; Woinarski, J.C.Z.; Whiterod, N.S.; Ward, M.; Southwell, D.G.; Scheele, B.C.; Nimmo, D.G.; Lintermans, M.; Geyle, H.M.; Garnett, S.T.; Hayward-Brown, B.; Ensbey, M.; Ehmke, G.; Ahyong, S.T.; Blackmore, C.J.; Bower, D.S.; Brizuela-Torres, D.; Burbidge, A.H.; Burns, P.A.; Butler, G.; Catullo, R.; Chapple, D.G.; Dickman, C.R.; Doyle, K.E.; Ferris, J.; Fisher, D.; Gallagher, R.; Gillespie, G.R.; Greenlees, M.J.; Hohnen, R.; Hoskin, C.J.; Hunter, D.; Jolly, C.; Kennard, M.; King, A.; Kuchinke, D.; Law, B.; Lawler, I.; Lawler, S.; Loyn, R.; Lunney, D.; Lyon, J.; MacHunter, J.; Mahony, M.; Mahony, S.; McCormack, R.B.; Melville, J.; Menkhorst, P.; Michael, D.; Mitchell, M.; Mulder, E.; Newell, D.; Pearce, L.; Raadik, T.A.; Rowley, J.J.L.; Sitters, H.; Spencer, R.; Valavi, R.; West, M.; Wilkinson, D.P.; Zukowski, S.
Source Titel Global Ecology and Biogeography
Year 2022
Department NSF
Volume 31
Issue 10
Page From 2085
Page To 2104
Language englisch
Topic T5 Future Landscapes
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Keywords conservation status; ecological disturbance; expert elicitation; megafire; population decline; Red List Index
Abstract

Aim

After environmental disasters, species with large population losses may need urgent protection to prevent extinction and support recovery. Following the 2019–2020 Australian megafires, we estimated population losses and recovery in fire-affected fauna, to inform conservation status assessments and management.

Location

Temperate and subtropical Australia.

Time period

2019–2030 and beyond.

Major taxa

Australian terrestrial and freshwater vertebrates; one invertebrate group.

Methods

From > 1,050 fire-affected taxa, we selected 173 whose distributions substantially overlapped the fire extent. We estimated the proportion of each taxon’s distribution affected by fires, using fire severity and aquatic impact mapping, and new distribution mapping. Using expert elicitation informed by evidence of responses to previous wildfires, we estimated local population responses to fires of varying severity. We combined the spatial and elicitation data to estimate overall population loss and recovery trajectories, and thus indicate potential eligibility for listing as threatened, or uplisting, under Australian legislation.

Results

We estimate that the 2019–2020 Australian megafires caused, or contributed to, population declines that make 70–82 taxa eligible for listing as threatened; and another 21–27 taxa eligible for uplisting. If so-listed, this represents a 22–26% increase in Australian statutory lists of threatened terrestrial and freshwater vertebrates and spiny crayfish, and uplisting for 8–10% of threatened taxa. Such changes would cause an abrupt worsening of underlying trajectories in vertebrates, as measured by Red List Indices. We predict that 54–88% of 173 assessed taxa will not recover to pre-fire population size within 10 years/three generations.

Main conclusions

We suggest the 2019–2020 Australian megafires have worsened the conservation prospects for many species. Of the 91 taxa recommended for listing/uplisting consideration, 84 are now under formal review through national processes. Improving predictions about taxon vulnerability with empirical data on population responses, reducing the likelihood of future catastrophic events and mitigating their impacts on biodiversity, are critical.

Persistent UFZ Identifier https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=25922
Legge, S., Rumpff, L., Woinarski, J.C.Z., Whiterod, N.S., Ward, M., Southwell, D.G., Scheele, B.C., Nimmo, D.G., Lintermans, M., Geyle, H.M., Garnett, S.T., Hayward-Brown, B., Ensbey, M., Ehmke, G., Ahyong, S.T., Blackmore, C.J., Bower, D.S., Brizuela-Torres, D., Burbidge, A.H., Burns, P.A., Butler, G., Catullo, R., Chapple, D.G., Dickman, C.R., Doyle, K.E., Ferris, J., Fisher, D., Gallagher, R., Gillespie, G.R., Greenlees, M.J., Hohnen, R., Hoskin, C.J., Hunter, D., Jolly, C., Kennard, M., King, A., Kuchinke, D., Law, B., Lawler, I., Lawler, S., Loyn, R., Lunney, D., Lyon, J., MacHunter, J., Mahony, M., Mahony, S., McCormack, R.B., Melville, J., Menkhorst, P., Michael, D., Mitchell, M., Mulder, E., Newell, D., Pearce, L., Raadik, T.A., Rowley, J.J.L., Sitters, H., Spencer, R., Valavi, R., West, M., Wilkinson, D.P., Zukowski, S. (2022):
The conservation impacts of ecological disturbance: Time-bound estimates of population loss and recovery for fauna affected by the 2019–2020 Australian megafires
Glob. Ecol. Biogeogr. 31 (10), 2085 - 2104 10.1111/geb.13473