27 papers · ranked by Valyu relevance
Òscar Guadayol, Nyssa J. Silbiger, Megan J. Donahue, Florence I. M. Thomas + 1 more
'Florence I. M. Thomas' 'Judi Hewitt'] Spatial and temporal environmental variability are important drivers of ecological processes at all scales. As new tools allow the in situ exploration of individual responses to fluctuations, ecologically meaningful ways of characterizing environmental variability at organism…
Nicholas Kortessis, José Miguel Ponciano, Franz W. Simon, Jake M. Ferguson
Understanding how populations respond to increasingly variable conditions is a major objective for natural resource managers attempting to forecast extinction risk. The lesson from current modeling is clear: Increasing environmental variability increases population abundance variability. We show that this paradigm…
Nicholas Kortessis, José Miguel Ponciano, Franz W. Simon, Jake M. Ferguson
'Jake M. Ferguson'] Understanding how populations respond to increasingly variable conditions is a major objective for natural resource managers forecasting extinction risk. The lesson from current modelling is clear: increasing environmental variability increases population abundance variability. We show that this…
Iván Hérnandez‐Chávez, Giovani Hernández‐Canchola, Celia López‐González, Livia León‐Paniagua
Environmental heterogeneity (EH) is widely recognized as a key driver of biodiversity, yet its conceptual foundations remain insufficiently structured. Here we present a semi-systematic narrative synthesis of 360 studies retrieved from Web of Science and Scopus, spanning 2000 to 2025, to evaluate how EH has been…
John M. Drake, John P. Wares, James E. Byers, Jill T. Anderson
Species' distributions are changing around the planet as a result of global climate change. Most research has focused on shifts in mean climate conditions, leaving the effects of increased environmental variability comparatively underexplored. This paper proposes two new macroecological hypotheses-the variability…
Caroline B. Turner, Sean W. Buskirk, Katrina B. Harris, Vaughn S. Cooper
Natural environments are rarely static; rather selection can fluctuate on time scales ranging from hours to centuries. However, it is unclear how adaptation to fluctuating environments differs from adaptation to constant environments at the genetic level. For bacteria, one key axis of environmental variation is…
Matthew Asker, Lluís Hernández-Navarro, A. M. Rucklidge, Mauro Mobilia
'Mauro Mobilia'] Microbial populations generally evolve in volatile environments, under conditions fluctuating between harsh and mild, e.g. as the result of sudden changes in toxin concentration or nutrient abundance. Environmental variability thus shapes the long-time population dynamics, notably by influencing the…
Bernardo García-Carreras, Daniel C. Reuman, Ivana Gudelj
Population dynamics are affected by changes in both the mean and standard deviation of climate, e.g., changes in average temperature are likely to affect populations, but so are changes in the strength of year-to-year temperature variability. The impacts of increases in average temperature are extensively researched…
Zi Ye, Giles Hooker, Stephen P. Ellner
This paper develops tools to characterize how species are affected by environmental variability, based on a functional single index model relating a response such as growth rate to environmental conditions. In ecology, the curvature of such responses are used, via Jensen's inequality, to determine whether environmental…
Eleni Nisioti, Clément Moulin-Frier
The diversity and quality of natural systems have been a puzzle and inspiration for communities studying artificial life. It is now widely admitted that the adaptation mechanisms enabling these properties are largely influenced by the environments they inhabit. Organisms facing environmental variability have two…
Ming Liu, Tzu-Man Hung, Shipher Wu, Mark Liu + 9 more
Thermal trait diversity is critical for understanding species’ responses to climate change, yet its ecological drivers remain unclear. Using eco-evolutionary simulations and empirical data from 653 moth species across three Asian elevational gradients, we examine how temperature regimes shape thermal strategies in…
Shraddha Madhav Karve, Kanishka Tiwary, S Selveshwari, Sutirth Dey
Little is known about the mechanisms that enable organisms to cope with unpredictable environments. To address this issue, we used replicate populations of Escherichia coli selected under complex, randomly changing environments. Under four novel stresses that had no known correlation with the selection environments…
Ulrich Dobramysl, Uwe C. Täuber
In contrast to the neutral population cycles of the deterministic meanfield Lotka–Volterra rate equations, including spatial structure and stochastic noise in models for predator-prey interactions yields complex spatio-temporal structures associated with long-lived erratic population oscillations. Environmental…
Anna Melbinger, Massimo Vergassola
One essential ingredient of evolutionary theory is the concept of fitness as a measure for a species' success in its living conditions. Here, we quantify the effect of environmental fluctuations onto fitness by analytical calculations on a general evolutionary model and by studying corresponding individualbased…
Shraddha Karve, Sachit Daniel, Yashraj Chavhan, Abhishek Anand + 2 more
There is considerable understanding about how laboratory populations respond to predictable (constant or deteriorating-environment) selection for single environmental variables like temperature or pH. However, such insights may not apply when selection environments comprise multiple variables that fluctuate…
Shraddha Karve, Devika Bhave, Sutirth Dey
Environmental variability is on the rise in different parts of the earth and the survival of many species depend on how well they cope with these fluctuations. Our current understanding of how organisms adapt to unpredictably fluctuating environments is almost entirely based on studies that investigate fluctuations…
Anna Melbinger, Massimo Vergassola
The concept of fitness as a measure for a species's success in natural selection is central to the theory of evolution. We here investigate how reproduction rates which are not constant but vary in response to environmental fluctuations, influence a species' prosperity and thereby its fitness. Interestingly, we find…
Shraddha Karve, Devika Bhave, Dhanashri Nevgi, Sutirth Dey
In nature, organisms are simultaneously exposed to multiple stresses (i.e. complex environments) that often fluctuate unpredictably. While both these factors have been studied in isolation, the interaction of the two remains poorly explored. To address this issue, we selected laboratory populations of Escherichia coli…
Mike Diessner, Kevin J. Wilson, Richard D. Whalley
expensive experiments and simulations with changing environmental conditions Authors: ['Mike Diessner' 'Kevin J. Wilson' 'Richard D. Whalley'] Experiments in engineering are typically conducted in controlled environments where parameters can be set to any desired value. This assumes that the same applies in a…
Skylar Gerace, Jun Yu, J. Keith Moore, Adam Martiny
Climate warming is increasing ocean stratification, which in turn should decrease the flux of nutrients to the upper ocean. This may slow marine primary productivity, causing cascading effects throughout food webs. However, observing changes in nutrient concentrations at the ocean surface is challenging because they…
Sarah Chambliss, Carlos Pinon, Kyle Messier, Brian LaFranchi + 5 more
Disparity in air pollution exposure arises from variation at multiple spatial scales: along urbanto-rural gradients, between individual cities within a metropolitan region, within individual neighborhoods, and between city blocks. Here, we improve on existing capabilities to systematically compare urban variation at…
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Cellulose diacetate (CDA), a bio-based material widely used in consumer products, is biodegradable in the coastal ocean. However, the effect of water temperature on biodegradation rates is unknown, limiting projections of lifetime across space and time. Here, we incubated CDA-based materials (film, foam, and straw)…
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Plastic mechanical recycling is the conventional technological step towards circularity. In such aspects, complex mixtures of polyolefin blends are often fed into mechanical recycling systems, resulting in moulded products with uncertain quality. To add to the difficulty of heterogeneous feedstocks, the testing of…
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Meteorological normalization is a key concept in studying anthropogenic effects on air pollutant concentrations and its temporal trends. While apparently successful in revealing anthropogenic effects and often used, there are downsides to the methods and limitations which should be taken into account when using it.…
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Aerial surveys, while effective in detecting emissions from upset conditions, face challenges in fully capturing CH4 emissions due to their temporal limitations, variability in measurements, and detection thresholds. Conversely, annual inventories submitted by operators likely don’t include emissions from failure…
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Optimizing the synthesis conditions of advanced materials is challenging, especially when outcomes are subject to inherent experimental uncertainties. Bayesian optimization is a popular tool for accelerating materials discovery, but its standard risk-neutral framework overlooks the variability of outcomes under…
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People of color in the United States are disproportionately and unfairly exposed to air pollution. Equity-oriented scientific evaluations quantifying these disparities often use population-average exposure metrics to capture the overall inequality within a system. Utilizing these metrics involves choices about the…