Preprints
Filtering by Subject: Life Sciences
Implementing a rapid geographic range expansion - the role of behavior changes
Published: 2023-04-12
Subjects: Biology, Life Sciences
It is generally thought that behavioral flexibility, the ability to change behavior when circumstances change, plays an important role in the ability of species to rapidly expand their geographic range. Great-tailed grackles (Quiscalus mexicanus) are a social, polygamous species that is rapidly expanding its geographic range by settling in new areas and habitats. They are behaviorally flexible [...]
Metabolic consequences of sex-reversal in two lizard species: a test of the like genotype and like phenotype hypotheses
Published: 2023-04-06
Subjects: Ecology and Evolutionary Biology, Life Sciences
Vertebrate sex is typically determined genetically, but in many ectotherms sex can be determined by genes (Genetic Sex Determination: GSD), temperature (Temperature-dependent Sex Determination: TSD), or interactions between genes and temperature during development. Temperature dependent sex determination may involve GSD systems with either male or female heterogamety (XX/XY or ZZ/ZW) where [...]
Yield declines and producer responses to shifting climate and economic conditions in Mexican coffee production
Published: 2023-04-06
Subjects: Agricultural and Resource Economics, Agricultural Economics, Agriculture, Environmental Sciences, Environmental Studies, Geography, Life Sciences, Nature and Society Relations, Other Environmental Sciences
Coffee’s climate sensitivity contributes to extreme production and price fluctuations. However, as coffee is a perennial crop, producers have difficulty responding to short-term market shifts. Combining historical climate, production and price data from all coffee-growing municipalities in Mexico, we examined trends of climate and coffee production and then characterized and quantified coffee [...]
Geographic, seasonal and ontogenetic variations of δ15N and δ13C of Japanese sardine explained by baseline variations and diverse fish movements
Published: 2023-04-05
Subjects: Life Sciences, Marine Biology
Understanding and predicting variability in the stable isotope ratios of nitrogen and carbon (δ15N and δ13C, respectively) of small pelagic fish is crucial to enable isotopic studies of a variety of marine predators that feed on them. However, because the isotope ratios reflect plastic feeding habits and fish migration in addition to baseline variation, their predictions require a mechanistic [...]
Replicated radiations in the South American Marsh Pitcher Plants (Heliamphora) lead to convergent carnivorous trap morphologies
Published: 2023-04-05
Subjects: Life Sciences
The evolution of carnivorous pitcher traps across multiple angiosperm lineages represents a classic example of morphological convergence. Nevertheless, no comparative study to-date has examined pitcher evolution from a quantitative morphometric perspective. In the present study, we used comparative morphometric approaches to quantify the shape space occupied by Heliamphora pitchers and to trace [...]
Litter quality outweighs climate as a driver of decomposition across the tundra biome
Published: 2023-03-30
Subjects: Life Sciences
Considerable uncertainty exists regarding the strength, direction and relative importance of the drivers of decomposition in the tundra biome, partly due to a lack of coordinated decomposition field studies in this remote environment. Here, we analysed 3717 incubations of two uniform litter types, green and rooibos tea, buried at 330 circum-Arctic and alpine sites to quantify the effects of [...]
Evolution of chemodiversity - From verbal to quantitative models
Published: 2023-03-28
Subjects: Biology, Life Sciences, Plant Sciences
Plants harbour an astonishing amount of chemodiversity, i.e., diversity of specialized metabolites, at different scales. For instance, individual plants can produce a large number of different specialized metabolites and individuals in a population can differ in their metabolite composition. Given the ecological and economic importance of plant chemodiversity, it is important to understand how it [...]
Developing systems theory in soil agroecology: Incorporating heterogeneity and dynamic instability
Published: 2023-03-22
Subjects: Agriculture, Applied Mathematics, Biogeochemistry, Biology, Dynamic Systems, Earth Sciences, Ecology and Evolutionary Biology, Life Sciences, Longitudinal Data Analysis and Time Series, Research Methods in Life Sciences, Soil Science, Sustainability
Ecosystem management is integral to the future of soils, yet anthropogenic drivers represent a key source of uncertainty in ecosystem models. First- and new-generation soil models formulate many soil pools using first-order decomposition, which tends to generate simpler yet numerous parameters. Systems or complexity theory, developed across various scientific and social fields, may help improve [...]
Bacterial Subcellular Architecture, Structural Epistasis, and Antibiotic Resistance
Published: 2023-03-21
Subjects: Life Sciences, Medicine and Health Sciences
Epistasis refers to how genetic interactions between some genetic loci affect phenotypes and fitness. In this study, we propose the concept “structural epistasis” to emphasize the role of the variable physical interactions between molecules located at particular spaces inside the bacterial cell in the emergence of novel phenotypes. The architecture of the bacterial cell (typically a [...]
Breaking down microbial hierarchies
Published: 2023-03-21
Subjects: Ecology and Evolutionary Biology, Life Sciences, Microbiology
Microbial communities that degrade natural polysaccharides are thought to have a hierarchical organization and one-way positive interactions from higher to lower trophic levels. Daniels et al. have recently shown that reciprocal interactions between trophic levels can occur and that these interactions change over the duration of a batch culture.
Allelopathy-selected microbiomes mitigate chemical inhibition of plant performance
Published: 2023-03-20
Subjects: Ecology and Evolutionary Biology, Environmental Microbiology and Microbial Ecology Life Sciences, Life Sciences, Other Plant Sciences, Plant Biology
Allelopathy is a common and important stressor that shapes plant communities and can alter soil microbiomes, yet little is known about the direct effects of allelochemical addition on bacterial and fungal communities or the potential for allelochemical-selected microbiomes to mediate plant performance responses, especially in habitats naturally structured by allelopathy. Here we present the first [...]
Fragmentation disrupts microbial effects on native plant community productivity
Published: 2023-03-19
Subjects: Ecology and Evolutionary Biology, Environmental Microbiology and Microbial Ecology Life Sciences, Life Sciences
1. Anthropogenic habitat fragmentation – the breaking up of natural landscapes – is a pervasive threat to biodiversity and ecosystem function worldwide. Fragmentation results in a mosaic of remnant native habitat patches embedded in human-modified habitat known as the “matrix”. By introducing novel environmental conditions in matrix habitats and reducing connectivity of native habitats, [...]
Beyond single-species models: leveraging multispecies forecasts to navigate the dynamics of ecological predictability
Published: 2023-03-13
Subjects: Desert Ecology, Ecology and Evolutionary Biology, Life Sciences, Multivariate Analysis, Population Biology, Statistical Methodology, Statistical Models, Statistics and Probability
Forecasting the responses of natural populations to environmental change is a key priority in the management of ecological systems. This is challenging because the dynamics of multispecies ecological communities are influenced by many factors. Populations can exhibit complex, nonlinear responses to environmental change, often over multiple temporal lags. In addition, biotic interactions, and [...]
Prophage mediated control of higher order interactions - insights from systems approaches
Published: 2023-03-11
Subjects: Life Sciences
Prophages, latent viral elements residing in bacterial genomes impact bacterial ecology and evolution in diverse ways. Do these prophage-mediated effects extend beyond the prophage-bacterium relationship? Here, I summarize the latest advances exploring how the impact of prophages are transmitted through multiple levels with potential impacts on ecosystem stability and functioning. The diverse [...]
Temperature-dependant, developmental plasticity and its effects on Allen’s and James’ rule in endotherms
Published: 2023-03-07
Subjects: Comparative and Evolutionary Physiology, Integrative Biology, Life Sciences, Other Ecology and Evolutionary Biology
Ecogeographical rules, describing common trends in animal form across space and time, have provided key insights into the primary factors driving species diversity on our planet. Among the most well-known ecogeographical rules are Bergmann’s Rule and Allen’s rule, with each correlating ambient temperature to the size and shape of endotherms within a species. These two rules have recently [...]