Vulnerability of amphibians to global warming

Published: Jan. 11, 2024

Amphibians are the most threatened vertebrates, yet their resilience to rising temperatures remains poorly understood. This is primarily because knowledge of thermal tolerance taxonomically and geographically biased, compromising global climate vulnerability assessments. Here, we employed a novel data imputation approach predict heat 60% amphibian species assessed daily temperature variation in refugia. We found 198 out 5203 currently exposed overheating events shaded terrestrial conditions. Despite accounting for plasticity, 4°C increase would create step-change impact severity, pushing 9.4% beyond physiological limits. In Southern Hemisphere, tropical encounter disproportionally more events, while Northern non-tropical susceptible. Our findings challenge evidence latitudinal gradients risk underscore importance considering climatic variability Notably, our conservative estimates assume access microenvironments, implying that warming’s impacts on amphibians may exceed projections. microclimate-explicit analyses also demonstrate how availability vegetation water bodies critical buffering during waves. Immediate action needed preserve manage these microhabitat features.

Language: Английский

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Countryside Biogeography: the Controls of Species Distributions in Human-Dominated Landscapes

Current Landscape Ecology Reports, Journal Year: 2019, Volume and Issue: 4(2), P. 15 - 30

Published: May 9, 2019

Language: Английский

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The ecology of sexual conflict: Temperature variation in the social environment can drastically modulate male harm to females

Functional Ecology, Journal Year: 2019, Volume and Issue: 33(4), P. 681 - 692

Published: Jan. 4, 2019

Abstract Sexual conflict is a fundamental driver of male/female adaptations, an engine biodiversity and crucial determinant population viability. frequently leads to behavioural adaptations that allow males displace their rivals, but in doing so harm those same females they are competing access, which can decrease viability facilitate extinction. We far from understanding what factors modulate the intensity sexual particularly role ecology mediating underlying adaptations. In this study, we show that, Drosophila melanogaster , variations environmental temperature ±4°C male impact on female fitness by between 45% 73%. Rate‐sensitive estimates indicate such modulation results average rescue productivity 7% at colder temperatures 23% hotter temperatures. Our results: (a) thermal social interactions drastically via plasticity, (b) identify potentially ecological factor understand how operates nature (c), along with recent studies, suggest behaviourally plastic responses lessen negative effect face rapid changes. A plain language summary available for article.

Language: Английский

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Impacts of pastures and forestry plantations on herpetofauna: A global meta‐analysis

Journal of Applied Ecology, Journal Year: 2022, Volume and Issue: 59(12), P. 3038 - 3048

Published: Sept. 22, 2022

Abstract The establishment of pastures and forestry plantations has increased globally to meet growing demands for meat wood products. Pasture plantation expansion often drives deforestation, which causes homogenization biotic communities is a major driver the global extinction crisis. A core question how severity losses varies between plantations, in turn, geographical location management characteristics moderate these impacts. Focusing on herpetofauna (amphibians reptiles) as most endangered vertebrate group, we performed synthesis using 41 scientific articles that reported species richness or abundance relative natural forest 191 case studies among 19 countries. We found severe negative effect pasture less herpetofauna. Within total were more negatively impacted amphibians than reptiles, tropics, when planting exotic tree species, monocultures, large commercial clearing understory vegetation. Yet mixed, old, small conservation those permitting recovery vegetation had no impacts reference forest. Synthesis applications . loss underscores importance halting ongoing tropical deforestation intensive plantations. potential appropriately managed support biodiversity regions lacking cover, including via replacement anthropogenic pastures, suggests such have an important role under reforestation agendas.

Language: Английский

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Testing the reliability and ecological implications of ramping rates in the measurement of Critical Thermal maximum

PLoS ONE, Journal Year: 2022, Volume and Issue: 17(3), P. e0265361 - e0265361

Published: March 14, 2022

Critical Thermal maximum (CTmax) is often used to characterize the upper thermal limits of organisms and represents a key trait for evaluating fitness ectotherms. The lack standardization in CTmax assays has, however, introduced methodological problems its measurement, which can lead questionable estimates species' limits. Focusing on ants, are model research ecology, we aim obtain reliable ramping rate that will yield most rigorous measures species. After identifying three commonly rates (i.e., 0.2, 0.5 1.0°C min-1) literature, experimentally determine their effects values 27 species measured using dynamic assays. Next, use static evaluate accuracy these function time exposure. Finally, field observations foraging activities across wide range ground temperatures identify biologically relevant develop standardized method. Our results demonstrate 1°C min-1 yields comparing ant limits, further validated observations. We illustrate how biases physiological measurements affect subsequent analyses conclusions community comparisons between strata habitats, detection phylogenetic signal (Pagel's λ Bloomberg's K). Overall, our study presents framework measure be applied other Particular attention should given obtained with less suitable rates, potential they may introduce trait-based global warming habitat conversion, as well inferences about conservatism.

Language: Английский

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