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Open research questions in Animal Ecology and Behavior Studies

88 unresolved questions extracted from the limitations and future-work sections of 515 Animal Ecology and Behavior Studies papers in our library. Each links back to the study that raised it.

What the literature leaves open

  • Abstract The abundance of herbivores has broad effects on the surrounding ecosystem, yet herbivores are also limited by the carrying capacity of their environments.

    Multi-year impacts of environmental stress on the abundance and reproduction of a large social herbivore, the Eastern Grey Kangaroo ( Macropus giganteus ) · 2026 · DOI

  • Our findings unveil a critical yet underrecognized indirect mechanism by which climate change endangers forest ecosystems, emphasizing the need to consider interactions between demographic processes when assessing species vulnerability to climate change.

    Growth decline in European beech associated with temperature-driven increase in reproductive allocation · 2025 · DOI

  • However, since most metapopulation models are restricted to simple networks of discrete habitat patches, the effects of real landscape fragmentation, particularly in stochastic environments, are not well understood.

    Landscape fragmentation overturns classical metapopulation thinking · 2024 · DOI

  • However, the degree to which such flows can induce cross-ecosystem cascades of spatial synchrony, the tendency for system fluctuations to be correlated across locations, is not well understood.

    Spatial synchrony cascades across ecosystem boundaries and up food webs via resource subsidies · 2024 · DOI

  • Therefore, further research on the plot scale found that the disturbance by plateau pika significantly reduced plant biomass and BGB carbon stock.

    Consequences of plateau pika disturbance on plant-soil carbon and nitrogen in alpine meadows · 2024 · DOI

  • Despite the large number of studies on rodent ectoparasites-most of them vectors of epidemiologically important pathogens-infestation patterns remain poorly understood in various ecological contexts, such as the highly patchy agricultural landscapes.

    Effects of Season, Habitat, and Host Characteristics on Ectoparasites of Wild Rodents in a Mosaic Rural Landscape · 2024 · DOI

  • Classifying species based on subtle morphological variations remains controversial, as such classifications may not accurately reflect the true evolutionary relationships of these mice. There is a need to investigate the molecular phylogeny and morphometric divergence of native Korean wild mice.

    Molecular phylogeny and morphometric divergence of native Korean wild mice (Mus musculus) · 2026 · DOI

  • The use of skeletal measurements for TR calculation differs from traditional external TR protocols measuring soft tissue, requiring careful interpretation when comparisons are performed across studies.

    Molecular phylogeny and morphometric divergence of native Korean wild mice (Mus musculus) · 2026 · DOI

  • There is a lack of understanding of the ecological roles of meso-carnivores and their fluctuations in abundance. There is a need to quantify the impact of meso-carnivores and raptors on rodent pest populations.

    Biodiversity patterns of small mammals and their natural predators: implications for rodent pest management in agricultural systems · 2026 · DOI

  • The genetic diversity and phylogenetic relationships of the edible dormouse are not well understood. There is a need to investigate the phylogeographic patterns and genetic structure of the species.

    Phylogenetic diversity of the edible dormouse, Glis glis (Rodentia: Gliridae) in Romania, based on mitochondrial DNA · 2026 · DOI

  • The paper identifies a gap in the understanding of synanthropic mammal fauna in Eurasian cities. It highlights the need for further research on the mechanisms of adaptation to the urban environment.

    Synanthropic mammal fauna in cities of the Eurasian continent · 2026 · DOI

  • Plague remains a major public health concern in Madagascar. The disease is difficult to control due to the complex dynamics of the reservoir and vector populations.

    Genetic structure of Rattus rattus populations in an endemic plague focus in Madagascar: Implications for rodent surveillance and management · 2026 · DOI

  • There is a lack of research on the consistency of predictors of extinction risk across scales. There is a need to address the scale mismatch between scientific research and conservation practice.

    Predictors of extinction risk in large tropical forest mammals: From global to local · 2026 · DOI

  • The processes underlying the response of bullfrogs to chytrid infection are not well understood. The influence of farming environments on infection dynamics and immune response is unclear. There is a need to investigate the dynamics of chytrid infection and shedding in farmed and wild American bullfrogs.

    Farming-associated variation in chytrid infection and shedding dynamics in invasive American bullfrogs · 2026 · DOI

  • The study only investigated the breeding-season diet of the Western Cattle Egret. The sample size was limited to 241 pellets from nine breeding colonies. The study did not examine the species' diet during other times of the year.

    Trophic conservatism in breeding Western Cattle Egrets (Ardea ibis) across a Mediterranean climatic gradient · 2026 · DOI

  • There is a need to understand how environmental gradients shape the foraging ecology of generalist waterbirds. The effects of climatic variation on the diet and foraging ecology of the Western Cattle Egret are not well understood. This study addresses this gap by investigating the breeding-season diet of the Western Cattle Egret across a Mediterranean climatic gradient.

    Trophic conservatism in breeding Western Cattle Egrets (Ardea ibis) across a Mediterranean climatic gradient · 2026 · DOI

  • The study identifies a gap in the understanding of the effects of roe deer browsing on Turkey oak and chestnut coppice stands. The study highlights the need for further research on the impact of wild ungulates on ecosystem stability and dynamics.

    Roe deer browsing effects on growth development of Turkey oak and chestnut coppices. · 2026 · DOI

  • Further research on the concept of eco-evolutionary experience and its application to IAS control.

    Eco-Evolutionary Experience with structures of anthropogenic origin · 2026 · DOI

  • The gap in understanding why invasive alien species are frequently successful urban exploiters. The need to understand which structures will benefit which species.

    Eco-Evolutionary Experience with structures of anthropogenic origin · 2026 · DOI

  • the study only considered Italian cities, - the sample size of cities is limited (26 cities), - the study relied on citizen-science records and camera-trapping data

    Can a forest specialist live in a city? Behavioural plasticity fosters the presence of a protected carnivore in urban areas · 2026 · DOI

  • The gap in knowledge about the ability of forest specialists, such as the pine marten, to adapt to urban environments. The lack of studies on the presence of pine martens in urban areas of Italy.

    Can a forest specialist live in a city? Behavioural plasticity fosters the presence of a protected carnivore in urban areas · 2026 · DOI

  • Further research on the effects of small burrowing mammals on C and N cycling in grassland ecosystems. Research on the effects of disturbance by pikas on soil C and N stocks at different scales. Studies on the effects of pikas on plant and soil heterogeneity in alpine meadow ecosystems.

    Consequences of plateau pika disturbance on plant-soil carbon and nitrogen in alpine meadows · 2024 · DOI

  • Overdispersion in the data, which was addressed using negative binomial GLMMs. Difficulty in identifying some ectoparasites to species level, such as some Ixodes ticks. The need to consider the complex interactions between hosts, ectoparasites, and human land disturbances.

    Effects of Season, Habitat, and Host Characteristics on Ectoparasites of Wild Rodents in a Mosaic Rural Landscape · 2024 · DOI

  • One of the most well-known explanations for the success of invasive plants in novel environments is enemy release, which predicts that 1) invasive plants are limited by natural enemies in the native range but not the non-native range, and 2) native competitors in recipient communities remain limited by their natural enemies.

    A BIOGEOGRAPHIC PERSPECTIVE ON THE IMPACTS AND IMPORTANCE OF RODENT GRANIVORY ON NATIVE VS. INVASIVE PLANTS · 2017

  • Studies of nutmeg-vertebrate interactions have typically focused on frugivory, whereas few studies have specifically quantified the effectiveness of frugivores as seed dispersers; thus, it remains difficult to evaluate the effect of frugivore loss on the populations of most nutmeg species in this region.

    Nutmeg-Vertebrate Interactions in the Asia-Pacific Region: Importance of Frugivores for Seed Dispersal in Myristicaceae · 2013 · DOI

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88 open questions have been extracted from the limitations and future-work passages of 515 Animal Ecology and Behavior Studies papers in our library. Each one below links back to the study that raised it, so you can read the original claim in context.

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