Preprints
Filtering by Subject: Terrestrial and Aquatic Ecology
Food resources shape bird assemblages, rendering trophic structure globally convergent
Published: 2026-07-13
Subjects: Ecology and Evolutionary Biology, Life Sciences, Terrestrial and Aquatic Ecology
Species persist only when energy resources are available and organisms have traits to exploit them. Because resources such as fruit or carrion differ in abundance and diversity, general principles of energy flow and niche theory should shape differences in species richness among trophic guilds within assemblages. Yet, this hypothesis remains empirically untested. Here, we analyze 31,251 local [...]
Sniffing for fungi: Use of a conservation dog uncovers high regional truffle diversity
Published: 2026-07-09
Subjects: Biodiversity, Biology, Botany, Ecology and Evolutionary Biology, Environmental Microbiology and Microbial Ecology Life Sciences, Forest Biology, Forest Sciences, Plant Sciences, Research Methods in Life Sciences, Terrestrial and Aquatic Ecology
Hypogeous aromatic fungi (‘truffles’) contribute significantly to overall fungal diversity but are difficult to find using traditional survey methods because they fruit underground, leading to under-documentation and a lack of understanding of truffle ecology. Truffles evolved to emit strong aromatic compounds to attract mycophagists for spore dispersal, a trait that culinary truffle harvesters [...]
Dark fragmentation: daylighting hidden disconnections in river networks
Published: 2026-07-09
Subjects: Terrestrial and Aquatic Ecology
River fragmentation is a central driver of freshwater biodiversity loss, yet its true extent is often underestimated due to incomplete barrier inventories, static river maps, and simplified assumptions about barrier passability. We propose dark fragmentation as the hidden component of river-network disconnection arising from three interacting dimensions: inventory darkness caused by unmapped [...]
Species diversity reduces risk in tropical forest restoration: a portfolio effect across heterogeneous sites
Published: 2026-06-30
Subjects: Ecology and Evolutionary Biology, Terrestrial and Aquatic Ecology
Assisted restoration is essential for recovering degraded tropical forests. Biodiversity-stability theory predicts that functionally diverse communities should produce more reliable, predictable outcomes than monocultures, but broad-scale field experiments in tropical restoration are scarce. We established 120 plots spanning five planting treatments (two monocultures – of a fast-growing [...]
Natural history models of bird–building collisions
Published: 2026-06-25
Subjects: Behavior and Ethology, Ecology and Evolutionary Biology, Life Sciences, Other Ecology and Evolutionary Biology, Population Biology, Terrestrial and Aquatic Ecology
Building collisions kill an estimated 1.28–5.19 billion birds annually in North America, making them the second leading cause of human-related avian mortality. Yet the behavioral and ecological drivers of collisions remain difficult to disentangle, as most knowledge derives from carcass surveys rather than direct observations. Here, we propose a conceptual framework that synthesizes four natural [...]
robust.prioritizr: Robust Systematic Conservation Prioritization
Published: 2026-06-19
Subjects: Biodiversity, Natural Resources and Conservation, Natural Resources Management and Policy, Sustainability, Terrestrial and Aquatic Ecology
1. Climate change poses significant threats to biodiversity. To ensure the long-term persistence of species, protected areas must be established in locations that will safeguard suitable habitats in the future. Although statistical models can predict where such habitats may occur under different future scenarios, designing protected areas that can effectively protect these habitats across a wide [...]
An integrated framework for unifying our understanding of nonconsumptive predation risk effects
Published: 2026-06-12
Subjects: Behavior and Ethology, Biology, Ecology and Evolutionary Biology, Evolution, Integrative Biology, Life Sciences, Other Ecology and Evolutionary Biology, Population Biology, Terrestrial and Aquatic Ecology
Predation risk can induce risk-induced trait responses (RITRs) – changes in prey defensive traits including behavior, morphology, life history, and physiology – thought to have profound effects on prey fitness and population dynamics (termed ‘nonconsumptive effects’). Yet, predicting the magnitude of RITRs and their fitness consequences remains difficult because outcomes depend heavily on [...]
Trophic interactions of ants are robust to tree species loss
Published: 2026-06-05
Subjects: Entomology, Life Sciences, Terrestrial and Aquatic Ecology
1. How changes in habitat conditions influence insect diversity has been intensively studied. However, whether trophic interactions of insects are also influenced by such changes is largely unknown. Higher habitat heterogeneity is often hypothesized to promote niche partitioning and complementarity in resource use among interacting species, yet evidence from animal interaction networks is sparse. [...]
Recreational fishing drives the global spread of aquatic non-native species
Published: 2026-06-04
Subjects: Aquaculture and Fisheries Life Sciences, Terrestrial and Aquatic Ecology
Recreational fishing provides substantial socio-economic benefits worldwide, yet its role in driving aquatic biological invasions remains insufficiently understood. Here, we assessed global evidence for recreational fisheries-mediated introductions of aquatic non-native species. Using a systematic review of 140 retained studies, we compared temporal trends, geographic coverage, introduction [...]
Two centuries of decline and partial recovery of fish in rivers of post-industrial northeast England: lessons for global rivers in the Anthropocene
Published: 2026-06-03
Subjects: Terrestrial and Aquatic Ecology
Understanding the historical decline in ecological condition of rivers, their fish stocks, and of their restoration, offers one perspective by which contemporary threats to river fishes in less developed regions may be assessed. We explore the decline and recovery of fish populations in rivers (Tyne, Wear, Tees) of post-industrial northeast England. Before ~1850, Atlantic salmon (Salmo salar) and [...]
Cryptic diversity constrains biogeographical inference in microscopic animals: evidence from bdelloid rotifers in Greenland
Published: 2026-06-01
Subjects: Life Sciences, Other Ecology and Evolutionary Biology, Terrestrial and Aquatic Ecology, Zoology
Species are fundamental units of biodiversity, yet their delimitation remains challenging in many organismal groups. The increasing use of DNA data has revealed widespread cryptic diversity, in which genetically distinct lineages are morphologically indistinguishable. Consequently, many morphology-based biogeographical inferences have likely overestimated species ranges, particularly in [...]
Canopy closure re-establishes ants in young tree plantations, while low soil pH limits ant diversity
Published: 2026-05-28
Subjects: Entomology, Life Sciences, Terrestrial and Aquatic Ecology
1. Tree species richness is known to enhance biodiversity and ecosystem functioning, but its effects across trophic levels during forest restoration remain insufficiently understood. In reforestation on complex terrain, habitat complexity may moderate the effect of canopy closure on animal community reassembly, a relationship further shaped by the abiotic environment. 2. Ants, as key functional [...]
China must revise its regulation for managing non-native invasive species
Published: 2026-05-27
Subjects: Political Science, Terrestrial and Aquatic Ecology
Biological invasions are a leading contributor to the global biodiversity crisis, yet existing regulatory frameworks are challenged by definitions of ‘non-native’ species that are based on geopolitical rather than ecological boundaries. This perspective highlights the critical disconnect between administrative jurisdictions and biogeographic units, with focus on China’s biosecurity laws. These [...]
Navigating Spatial Trade-offs in Restoration Planning: A Multi-Objective Optimization Framework Integrating Ecological Feasibility
Published: 2026-05-27
Subjects: Biodiversity, Life Sciences, Natural Resources and Conservation, Physical Sciences and Mathematics, Sustainability, Terrestrial and Aquatic Ecology
Ecosystem restoration requires decision-support tools capable of balancing ecological benefits under limited resources while explicitly accounting for the long-term likelihood of restoration success. Despite its recognized importance, ecological feasibility has rarely been formulated as an optimization objective in spatial planning, typically being treated only as a constraint or biophysical [...]
Insufficient environmental protection by the European regulatory framework for pesticides
Published: 2026-05-20
Subjects: Agriculture, Environmental Health Life Sciences, Terrestrial and Aquatic Ecology, Toxicology
Schriever et al. (2025) argue that environmental risk assessment of pesticides in the European Union is sufficiently protective and that regulatory thresholds are rarely exceeded. Here, we re-examine these claims based on new and previous evidence from monitoring, systematic reviews, and different types of field studies. The clear outcome is that measured pesticide concentrations frequently [...]