Preprints
There are 2173 Preprints listed.
Late Pleistocene faunal community patterns disrupted by Holocene human impacts
Published: 2025-03-20
Subjects: Biodiversity, Ecology and Evolutionary Biology, Life Sciences, Paleobiology
We analysed fossil mammal assemblages from over 350 Late Pleistocene and Holocene sites worldwide to test whether human activities, such as agriculture, domestication and intensified land use, restructured global patterns of mammal co-occurrence. Using presence-absence data, we contrasted a novel iterative ‘chase clustering’ method, which is compositionally driven, against a traditional spatially [...]
Anomaly detection in metabarcoding amplicon reads using an LSTM-CNN deep neural network ensemble (MetAnoDe)
Published: 2025-03-20
Subjects: Life Sciences
Metabarcoding has emerged as a critical tool in ecology and other scientific disciplines, facilitating species identification in diverse samples for biodiversity monitoring, community and microbiome analysis, dietary studies, and understanding species interactions. However, challenges arise from errors and artifacts introduced during laboratory processes such as PCR and sequencing. Manual [...]
Moth communities are more diverse in the understory than in the canopy of a tropical lowland rainforest in NW Ecuador
Published: 2025-03-20
Subjects: Life Sciences
Tropical rainforests are the most species-rich terrestrial habitats and provide distinct niches for specialization and speciation, in part due to their vertical stratification. Stratification is observed in many insect orders as a result of abiotic factors, resource availability, and insect behavior. Here, we investigate the stratification of five clades of Lepidoptera: Erebidae-Arctiinae, [...]
How to Balance Conceptual Unity and Plurality: The Case of the Individualized Niche Concept
Published: 2025-03-20
Subjects: Arts and Humanities, Life Sciences
Many philosophical discussions about biological concepts have focused on arguments for conceptual pluralism or monism, an approach that threatens to obscure the nuances of conceptual structure. We characterize the structure of the individualized niche concept based on the results of a qualitative empirical study we conducted within an interdisciplinary, biological research center. Our findings [...]
No evidence for assortative mating in the Atlantic puffin
Published: 2025-03-20
Subjects: Behavior and Ethology, Ecology and Evolutionary Biology, Evolution, Life Sciences
Assortative mating occurs when individuals with similar phenotypes mate together more often than by chance and can contribute to increases in homozygosity, linkage disequilibrium between loci, and premating isolation in a phenotypically divergent population. While this phenomenon has been well documented in many avian species, evidence is relatively scarce in seabirds. Most seabirds are [...]
Increased Arctic fire occurrence related to human activity calls for improved management
Published: 2025-03-20
Subjects: Ecology and Evolutionary Biology, Life Sciences, Terrestrial and Aquatic Ecology
Arctic fires have become more frequent in recent decades. They release carbon to the atmosphere through burning organic material and degrading permafrost and thus accelerate global warming. Previous research highlighted climate variables as the driving factor of fire occurrence in the Arctic, largely ignoring the contribution of human activity. Here, we analyzed the relationship between fire [...]
Dragon Kill Points: applying a transparent working template to relieve authorship stress
Published: 2025-03-20
Subjects: Arts and Humanities, Business, Education, Engineering, Law, Life Sciences, Medicine and Health Sciences, Physical Sciences and Mathematics, Social and Behavioral Sciences
The concept of authorship, while straightforward in theory, proves to be remarkably complex in practice. While existing frameworks provide a foundation for classifying and ranking authorship roles, conflicts still arise when contributions are ambiguous or poorly documented. To address these issues, we propose Dragon Kill Points, adapted from multiplayer gaming, which tracks individual [...]
Recovery of forest structural complexity during secondary succession in the tropics
Published: 2025-03-19
Subjects: Agricultural Science, Forest Sciences, Life Sciences, Plant Sciences, Terrestrial and Aquatic Ecology
Forest structural complexity is an essential determinant of forest ecosystem functions and biodiversity. The natural dynamics of structural complexity of tropical forests remain largely unexplored, especially for naturally regenerating forest during secondary succession. Better understanding the trajectories of forest structural complexity recovery is crucial to inform the development of forest [...]
Social Learning and Culture in Birds: Emerging Patterns and Relevance to Conservation
Published: 2025-03-19
Subjects: Ecology and Evolutionary Biology
There is now abundant evidence for a role of social learning and culture in shaping behaviour in a range of avian species across multiple contexts, from migration routes in geese and foraging behaviour in crows, to passerine song. Recent emerging evidence has further linked culture to fitness outcomes in some birds, highlighting its potential importance for conservation. Here, we first summarise [...]
Viability selection on coat spot patterns correlates with temperature anomalies in Masai giraffes
Published: 2025-03-19
Subjects: Ecology and Evolutionary Biology, Evolution, Life Sciences, Other Ecology and Evolutionary Biology, Population Biology
Remarkable variation in animal colour patterns is often shaped by heterogeneous selection, reflecting adaptation to variable environmental conditions. However, the adaptive functions of patterns and drivers of selection remain poorly understood. Shape and size of colour patterns may help with thermoregulation and thus be altered by temperature anomalies, which are predicted to be more frequent [...]
The decades-long recovery of nocturnal bees in logged forests is counteracted by broad resource range and reliance on pioneers
Published: 2025-03-18
Subjects: Life Sciences
Nocturnal bees are elusive pollinators for which little and fragmented evidence of their dietary breadth is available. Moreover, despite their assumed relevance as pollinators of tropical plants, there is no information on how nocturnal bees respond to the loss of suitable habitats and forest succession. Here, we investigated the recovery of Megalopta bees, a prominent group of nocturnal [...]
Citizen science data supports sexual dichromatism but rejects thermal melanism in the European fire salamander (Salamandra salamandra)
Published: 2025-03-18
Subjects: Ecology and Evolutionary Biology
Background Conspicuous color patterns are traditionally believed to advertise the toxicity of prey to potential predators. However, many aposematic species show drastic variation in coloration, indicating the possibility of other functions of coloration. To study these other functions, we can investigate the influence of inherent (e.g., sex) and external factors (e.g., climate) on color [...]
COI metabarcoding with a curated reference database and optimized protocol provides a reliable species-level diversity assessment of tardigrades
Published: 2025-03-18
Subjects: Zoology
DNA metabarcoding is revolutionizing biodiversity research by providing rapid and efficient ways of collecting species occurrence data. However, it has not yet been effectively applied to many taxonomic groups, mainly due to a significant lack of reference sequences and dedicated protocols. One such group is the tardigrades - a charismatic phylum of microinvertebrates known for their [...]
Predicting interaction frequency in plant-pollinator networks
Published: 2025-03-17
Subjects: Biodiversity, Ecology and Evolutionary Biology, Life Sciences, Other Ecology and Evolutionary Biology
Flowers and their pollinators represent a bipartite interaction system, whose links are hypothesised to be related to species traits. To explore whether we can predict the weight of this link, i.e. the frequency of interactions, in an validation network, we analysed 14 studies of pollinator-flower visitation network from around the world. We used information on species abundances, their traits [...]
Conservation macrogenetics reveals the potential hidden consequences of the 2019-2020 Black Summer fires on Australian biodiversity
Published: 2025-03-17
Subjects: Biodiversity, Genetics, Genomics, Life Sciences, Molecular Genetics, Other Ecology and Evolutionary Biology, Population Biology
The use of genetic analyses has become ubiquitous in conservation planning and management as biodiversity is increasingly threatened globally. Typically, such analyses are employed at the species-level, though as genetic data accrue, it is now possible to consider the genetic composition of multiple species across landscapes. Such macrogenetic perspectives can reveal the potential genetic [...]