DOI: 10.1111/ele.13636
论文题名: Three questions about the eco-physiology of overwintering underground
作者: Huey R.B. ; Ma L. ; Levy O. ; Kearney M.R.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2021
卷: 24, 期: 2 起始页码: 170
结束页码: 185
语种: 英语
中文关键词: Biophysics
; climate change
; cold tolerance
; digestion
; dormancy
; energy reserves
; soil temperature
; thermal ecology
; winter biology
英文关键词: cooling
; ecophysiology
; ectothermy
; freezing
; numerical model
; overwintering
; shallow water
; simulation
; trade-off
; warming
; United States
; Reptilia
; cold
; freezing
; season
; soil
; temperature
; Cold Temperature
; Freezing
; Seasons
; Soil
; Temperature
英文摘要: In cold environments ectotherms can be dormant underground for long periods. In 1941 Cowles proposed an ecological trade-off involving the depth at which ectotherms overwintered: on warm days, only shallow reptiles could detect warming soils and become active; but on cold days, they risked freezing. Cowles discovered that most reptiles at a desert site overwintered at shallow depths. To extend his study, we compiled hourly soil temperatures (5 depths, 90 sites, continental USA) and physiological data, and simulated consequences of overwintering at fixed depths. In warm localities shallow ectotherms have lowest energy costs and largest reserves in spring, but in cold localities, they risk freezing. Ectotherms shifting hourly to the coldest depth potentially reduce energy expenses, but paradoxically sometimes have higher expenses than those at fixed depths. Biophysical simulations for a desert site predict that shallow ectotherms have increased opportunities for mid-winter activity but need to move deep to digest captured food. Our simulations generate testable predictions to eco-physiological questions but rely on physiological responses to acute cold rather than to natural cooling profiles. Furthermore, natural-history data to test most predictions do not exist. Thus, our simulation approach uncovers knowledge gaps and suggests research agendas for studying ectotherms overwintering underground. © 2020 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/166853
Appears in Collections: 气候变化与战略
There are no files associated with this item.
作者单位: Department of Biology, University of Washington, Seattle, WA 98195, United States; Princeton School of Public and International Affairs, Princeton University, Princeton, NJ 08544, United States; School of Zoology, Tel-Aviv University, Tel Aviv, 69978, Israel; School of BioSciences, The University of Melbourne, Melbourne, VIC 3010, Australia
Recommended Citation:
Huey R.B.,Ma L.,Levy O.,et al. Three questions about the eco-physiology of overwintering underground[J]. Ecology Letters,2021-01-01,24(2)