Climate change and the cost-of-living squeeze in desert lizards

• 成果类型: Article
• 署名作者: Wild, Kristoffer H.; Huey, Raymond B.; Pianka, Eric R.; Clusella-Trullas, Susana; Gilbert, Anthony L.; Miles, Donald B.; Kearney, Michael R.
• 署名单位: University of Melbourne; University of Washington; University of Washington Seattle; University of Texas System; University of Texas Austin; Stellenbosch University; Stellenbosch University; Auburn University System; Auburn University; University System of Ohio; Ohio University
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-10547
• DOI: 10.1126/science.adq4372
• 发表日期: 2025-01-17
• 页码: 303-309
• 关键词: thermoregulatory behavior; thermal relations; body-temperature; extinction risk; precipitation; physiology; ctenotus; exposure; mismatch; reptiles

摘要

Climate warming can induce a cost-of-living squeeze in ectotherms by increasing energetic expenditures while reducing foraging gains. We used biophysical models (validated by 2685 field observations) to test this hypothesis for 10 ecologically diverse lizards in African and Australian deserts. Historical warming (1950-2020) has been more intense in Africa than in Australia, translating to an energetic squeeze for African diurnal species. Although no net impact on Australian diurnal species was observed, warming generated an energetic relief (by increasing foraging time) for nocturnal species. Future warming impacts will be more severe in Africa than in Australia, requiring increased rates of food intake (+10% per hour active for diurnal species). The effects of climate warming on desert lizard energy budgets will thus be species-specific but potentially predictable.