Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1242/jeb.245066 |
An evaluation of a biophysical model for predicting avian thermoregulation in the heat | |
Conradie, Shannon R.; Kearney, Michael R.; Wolf, Blair O.; Cunningham, Susan J.; Freeman, Marc T.; Kemp, Ryno; McKechnie, Andrew E. | |
通讯作者 | Conradie, SR |
来源期刊 | JOURNAL OF EXPERIMENTAL BIOLOGY
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ISSN | 0022-0949 |
EISSN | 1477-9145 |
出版年 | 2023 |
卷号 | 226期号:15 |
英文摘要 | Survival and reproduction of endotherms depend on their ability to balance energy and water exchange with their environment, avoiding lethal deficits and maximising gains for growth and reproduction. At high environmental temperatures, diurnal endotherms maintain body temperature (T-b) below lethal limits via physiological and behavioural adjustments. Accurate models of these processes are crucial for predicting effects of climate variability on avifauna. We evaluated the performance of a biophysical model (NicheMapR) for predicting evaporative water loss (EWL), resting metabolic rate (RMR) and T-b at environmental temperatures approaching or exceeding normothermic T-b for three arid-zone birds: southern yellow-billed hornbill (Tockus leucomelas), southern pied babbler (Turdoides bicolor) and southern fiscal (Lanius collaris). We simulated metabolic chamber conditions and compared model outputs with thermal physiology data collected at air temperatures (T-air) between 10 and 50 degrees C. Additionally, we determined the minimum data needed to accurately model diurnal birds' thermoregulatory responses to T-air using sensitivity analyses. Predicted EWL, metabolic rate and T-b corresponded tightly with observed values across T-air, with only minor discrepancies for EWL in two species at T-air approximate to 35 degrees C. Importantly, the model captured responses at T-air=30-40 degrees C, a range spanning threshold values for sublethal fitness costs associated with sustained hot weather in arid-zone birds. Our findings confirm how taxon-specific parameters together with biologically relevant morphological data can accurately model avian thermoregulatory responses to heat. Biophysical models can be used as a non-invasiveway to predict species' sensitivity to climate, accounting for organismal (e.g. physiology) and environmental factors (e.g. microclimates). |
英文关键词 | Avian thermoregulation Biophysical ecology Endotherms Heat NicheMapR |
类型 | Article |
语种 | 英语 |
开放获取类型 | Bronze |
收录类别 | SCI-E |
WOS记录号 | WOS:001104758000005 |
WOS关键词 | EVAPORATIVE WATER-LOSS ; CLIMATE-CHANGE ; HIGH-TEMPERATURES ; BODY CONDITION ; ENERGETICS ; HUMIDITY ; EXCHANGE ; BEHAVIOR ; ANIMALS ; IMPACTS |
WOS类目 | Biology ; Zoology |
WOS研究方向 | Life Sciences & Biomedicine - Other Topics ; Zoology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/397316 |
推荐引用方式 GB/T 7714 | Conradie, Shannon R.,Kearney, Michael R.,Wolf, Blair O.,et al. An evaluation of a biophysical model for predicting avian thermoregulation in the heat[J],2023,226(15). |
APA | Conradie, Shannon R..,Kearney, Michael R..,Wolf, Blair O..,Cunningham, Susan J..,Freeman, Marc T..,...&McKechnie, Andrew E..(2023).An evaluation of a biophysical model for predicting avian thermoregulation in the heat.JOURNAL OF EXPERIMENTAL BIOLOGY,226(15). |
MLA | Conradie, Shannon R.,et al."An evaluation of a biophysical model for predicting avian thermoregulation in the heat".JOURNAL OF EXPERIMENTAL BIOLOGY 226.15(2023). |
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