OECOLOGIA生态学（OECOLOGIA）
OECOLOGIA(英文缩写 OECOLOGIA),ISSN 0029-8549,eISSN 1432-1939,中文译名:生态学（OECOLOGIA） 是一本学术期刊。本页汇总该期刊的最新影响因子、分区信息以及最新收录于 PubMed 的文献,帮助您快速了解期刊全貌。
发文量统计区间：2025-10-01 至 2026-09-30，按本站收录文献的发表日期统计。
期刊介绍
历年影响因子趋势
| JCR 数据年份 | 影响因子 | JCR 分区 |
|---|---|---|
| 2021 | 3.298 | Q2 |
| 2022 | 2.700 | Q2 |
| 2023 | 2.300 | Q2 |
| 2024 | 2.300 | Q2 |
| 2025 | 2.500 | Q2 |
OECOLOGIA 最新收录文献
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1. Does cooling affect the lipid composition of parasite free-living stages?
PMID:日期:2026-10-02Temperature influences physiology and lipid composition of poikilotherms, but its effects on lipids of free-living parasite stages remain poorly understood. Free-living stages of trematodes (cercariae) can play an important role in the nutrition of aquatic organisms due to their high abundance and widespread distribution. Cercariae may experience short-term cooling in nature and during laboratory collection, yet it is unknown whether their lipid composition changes in response to low temperatures. We investigated how cooling (~ 4 h) affects lipids of cercariae of Diplostomum pseudospathaceum, a common freshwater trematode. Cercariae were either cooled (4-7 °C) or uncooled during collection and then analyzed using high-performance thin-layer chromatography and gas chromatography. Contrary to our hypotheses, cooling did not increase the levels of total lipids and polyunsaturated fatty acids. This suggests that cercariae lack the lipid adjustments to low temperatures for maintaining optimal membrane fluidity that characterize many other organisms. However, cold treatment showed some influence on lipid composition, interacting with age of cercariae and number of snails releasing them. Essential fatty acids accounted for 13% of all fatty acids in D. pseudospathaceum cercariae, which is lower than in some other trematodes and zooplankters. Unlike other trematodes, D. pseudospathaceum showed high levels of triacylglycerols and waxes in cercariae (10% and 18% of total lipids, respectively). These results contribute to understanding the potential nutritional role of cercariae in aquatic food webs. Additionally, we provide some of the first data on cercarial dry weight and methodological recommendations for their sampling, facilitating future research on these understudied organisms.
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2. Associations of waterbirds with harvesting and ploughing events in rice fields: increasing foraging opportunities or just gathering for the feast?
PMID:日期:2026-09-24Surges in food availability create localized intense foraging opportunities, often attracting multi-species consumer groups. Agricultural practices can trigger these surges, prompting bird associations. However, the strength and duration of associations and its drivers, remain unclear. This study examines waterbird association with harvesting and ploughing events in rice fields. The duration and magnitude of these associations were determined and three hypotheses addressed to explain them: (1) increased food availability, (2) enhanced foraging success and (3) reduced time allocated to vigilance. Waterbird counts and GPS tracking revealed strong associations with management events. Bird numbers spiked during events but declined within one to two days. Food availability increased significantly during events - crayfish and rice during harvesting, worms and soil penetrability during ploughing - supporting Hypothesis (1) However, this did not improve foraging performance (intake rate, foraging success), rejecting Hypothesis (2) Higher competition, interference or kleptoparasitism in these large mixed-species flocks may offset the benefits of increased food availability. Alternatively, prey intake may be constrained by a saturating functional response, with birds operating near maximum intake despite higher food availability. Hypothesis 3 was also unsupported, as birds did not reduce vigilance. Overall, birds gain no additional foraging advantage from attending actively managed fields relative to those managed over three days earlier. We hypothesize they are attracted by the expectation of improved foraging opportunities, with associations driven by gregariousness and local enhancement. Results highlight complex responses to food surges, suggesting waterbirds maintain stable foraging performance during and after agricultural management, indicating resilience to management timing shifts.
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3. Stream biodiversity and function benefit from forest fragments in agricultural landscapes.
PMID:日期:2026-09-24Riparian forests buffer stream ecosystems from intensive land use. However, with ongoing land-use changes, riparian forests often remain as isolated fragments. Despite this, the relevance of isolated forest fragments in deforested landscapes remains unclear. We evaluated how downstream forest fragments can buffer the effects of upstream deforestation and whether upstream forest fragments can mitigate the impacts of downstream deforestation on abiotic conditions, biodiversity, and stream functioning. Additionally, we assessed how subsidized leaf litter of varied quality and diversity influences leaf-associated invertebrate assemblages and leaf litter breakdown rates. We conducted leaf breakdown experiments in eight streams within agricultural catchments-four flowing from an upstream forest fragment to a deforested reach, and four from a deforested area to a downstream forest fragment. Downstream forest fragments reduced the effects of upstream deforestation, as evidenced by higher shredder diversity and lower scraper abundance in these reaches than in the upstream deforested reaches. Upstream forest fragments also mitigated downstream deforestation by reducing sediment load, moderating water temperatures, and enhancing substrate diversity. The taxonomic similarity between the forest upstream and the deforested downstream reaches highlighted the role of forest fragments as sources of invertebrates and organic matter for deforested reaches. In forest upstream reaches, invertebrates increased the breakdown rates of C-labile fast-decomposing leaf species, whereas leaf diversity accelerated the processing of nitrogen-fixing slow-decomposing leaves. These results demonstrate that the presence of forest fragments in agricultural catchments benefits water quality, invertebrate communities, and leaf litter breakdown, thereby contributing to the resilience of stream ecosystems to land-use changes.
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4. Disentangling biotic and abiotic drivers of a neotropical mistletoe.
PMID:日期:2026-09-15Parasitic plants known as mistletoes are a key resource in ecosystems and form intricate networks of biotic interactions. Several mistletoe species exhibit specific associations with particular hosts and dispersers, such as Psittacanthus robustus, which is distributed across South America. Here, we assessed the climatic niche similarity between P. robustus, its host trees, and seed dispersers, and identified the main factors influencing the parasite's occurrence. We analyzed the spatial overlap among P. robustus, hosts, and seed dispersers using niche equivalence and similarity tests and assessed the importance of predictors through machine-learning classification. We detected higher climatic niche similarity between P. robustus and its host trees, while niche equivalence was absent in all comparisons. The spatial distribution of P. robustus was primarily shaped by the presence of host trees rather than climatic conditions or seed dispersers. These results highlight the impact of host trees on the spatial distribution of P. robustus, serving as ecological filters that influence mistletoe occurrence. The secondary role of climate and dispersers likely arises from interacting processes such as climatic predictability, mistletoe reproductive phenology, host vulnerability, and the asymmetric dependence of mutualist animals on mistletoe resources.
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5. The effect of heat waves on pill bug Armadillidium vulgare risk-taking strategies.
PMID:日期:2026-09-11Global climate change is expected to increase both across- and within-day temperature fluctuations, likely affecting animal behaviour, particularly in small-bodied ectotherms. However, their impact on individual behavioural strategies remains understudied. Here, we investigated how heat waves influence risk-taking behaviour in the common pill bug Armadillidium vulgare, and whether prior experience with fluctuating temperatures alters this effect. Individuals were habituated to either fluctuating (alternating optimal 25ºC with stressful 31ºC daily) or stable (25ºC) thermal regimes. Risk-taking behaviour (conglobation time) was then repeatedly assessed at both 25ºC and 31ºC. Under thermal stress, A. vulgare exhibited reduced risk-taking, with 54-108% increase in conglobation time. This pattern was absent in females habituated to fluctuating thermal regime, showing only a minor decrease in risk-taking (~ 11%). Behavioural predictability (environment-independent within-individual behavioural variation) increased by 41% from the smallest to the largest individuals. Behavioural predictability decreased at higher temperatures in a sex-dependent fashion (females: 27%; males: 7%). Male repeatability was higher at 31ºC than at 25ºC in the fluctuating thermal treatment, while female repeatability was higher in the fluctuating than in the stable thermal treatment at 31ºC. Overall, our findings indicate that thermal stress alters risk-taking strategies and may promote between-individual behavioural differences, although prior thermal experience can buffer its effects. We conclude that climate change, even in the absence of other ecological changes, can reshape ectotherm antipredator strategies. We emphasize the need for long-term studies using the animal personality framework to understand how thermal landscape stability influences behavioural variation across ectotherm species.
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6. No evidence for thermal melanism in Canadian butterflies despite long-term lightening of wing colour.
PMID:日期:2026-09-11Climate change can alter the morphology of ectotherms, yet the extent to which warming shapes colour and body-size traits in insects remains unclear. The thermal melanism hypothesis predicts that lighter-coloured individuals should be favoured in warmer environments because paleness reduces solar heat absorption. Body size may further modify this relationship, as larger individuals gain and lose heat more slowly. Using 991 museum specimens of 10 butterfly species collected across Canada over 54 years, we examined how wing colour paleness and wing length vary across spatial and temporal temperature gradients. We found no relationship between paleness and spatial-temporal variation in summer temperature, and wing length did not modify these patterns. Thus, our results offer no support for the thermal melanism hypothesis at broad geographic scales. In contrast, wing length increased across the spatial-temporal temperature gradient but showed no long-term change. Despite this finding, butterflies became paler over time, indicating that morphological change is occurring independently of macroclimatic warming. Instead, this trend may reflect other environmental pressures, such as land-use change or shifts in larval nutrition. Together, our findings demonstrate that different morphological traits respond differently to climatic change and that spatial-temporal trait-environment relationships may not reliably predict long-term insect responses to climatic warming.
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7. Increasing bird diversity in a landscape in transition.
PMID:日期:2026-09-11Rural depopulation across Mediterranean uplands has driven farmland extensification and landscape transitions, yet their medium-term impacts on birds remain poorly understood. We resurveyed 213 selected 2 km × 2 km grid cells in the Côa River basin (western Iberia) in 2023-2024, following protocols comparable to those applied in 1999-2005, ensuring consistent sampling across periods. Median alpha diversity increased by five species, a 28% gain, with total abundance rising as common taxa became more widespread. Gains were predominantly driven by forest-associated and generalist species, while farmland specialists showed stagnation or slight declines. We discuss how landscape transitions contributed to these biodiversity patterns including lower human density, reduced grazing pressure, and altered disturbance regimes. However, significant avian diversity gains occurred within apparently stable forest-cover mosaics, potentially masking broader ecological shifts.
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8. Beta diversity patterns of saproxylic beetle communities in Patagonian temperate forests reflect the influence of wood decay and environmental variability on the foraging preferences of woodpeckers.
PMID:日期:2026-09-11Although woodpeckers prefer trees with higher beetle diversity, the composition of beetle assemblages in the trees utilized for foraging remains largely unknown. Environmental conditions and wood decay may influence the beta diversity of saproxylic beetles, potentially affecting the woodpecker's capacity to distinguish suitable foraging substrates. We assessed the patterns of beta diversity of saproxylic beetles in live trees used and not used by Magellanic woodpeckers for foraging in Patagonian temperate forests. The additive and interactive effects of wood decay and environmental conditions on beta diversity components (total diversity, species turnover, and nestedness) across different beetle guilds (all species, predators, mycophages, and wood borers) were tested. The composition of all beetle species and wood borers in foraging trees was taxonomically distinct from those found in control trees. As the wood decay gradient increased between the foraging and control trees, the nestedness of predators and mycophages also increased. The same pattern was observed for the turnover of wood borer species. Beta diversity exhibited a positive association with continuous canopy cover; however, environmental variables modulated the effects of wood decay. Increased temperatures weakened the positive responses of wood-borer species turnover and predator nestedness to wood decay. However, the impact of wood decay on the nestedness of predators was less pronounced in certain unsuitable conditions. Although total beta diversity increased as the habitat became more suitable for beetles and woodpeckers, rising temperatures in this region may cause woodpeckers to select live trees with prey communities that are less diverse than expected.
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9. Species-specific patterns in fine-root traits and their coordination in the multidimensional root economics space at the Mongolian forest-steppe ecotone.
PMID:日期:2026-09-11In the bioclimatically sensitive forest-steppe ecotone of northern Mongolia, belowground strategies can be elucidated using an integrated approach that considers root functional traits and symbiotic associations. We elucidated how three dominant tree species, namely Larix sibirica, Pinus sylvestris, and Betula platyphylla, coordinate their morphological, chemical, and symbiotic (ectomycorrhizal [EM]) traits within a multidimensional root economics space (RES) to adapt to this harsh ecotone. Although the RES framework generally associates thicker roots with greater reliance on fungi, EM colonization was highest in the thinnest-rooted species, B. platyphylla, with the highest specific root length (SRL), and lowest in the thickest-rooted species, L. sibirica, with the lowest SRL. Principal component analysis revealed that the primary axis of variation represents a synergistic acquisition gradient, rather than a traditional trade-off between morphological exploration and symbiotic associations. Along this axis, SRL and EM colonization were positively coordinated, indicating that B. platyphylla maximized its resource acquisition capacity by integrating high soil exploration with intensive fungal collaboration. This synergy is likely driven by higher root branching intensity in thinner roots, which provides more infection sites for EM fungi. In contrast, the conifers exhibit different root-trait combinations: P. sylvestris optimizes structural and chemical conservation, whereas L. sibirica employs a decoupled strategy to minimize symbiotic investment and maintain high metabolic potential. Our study highlights that tree species coexist by employing divergent resource-acquisition pathways, ranging from integrated combinations to resource-conservative trait syndromes, under intensifying climatic stress in Central Asia.
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10. Developing quantitative relationships between functional traits and performance of tropical seaweed.
PMID:日期:2026-09-06The development of trait-based ecology has deepened our understanding of community response to environmental challenges. Here we provide a conceptual underpinning for seaweed trait-based ecology by establishing relationships between traits and performance. We conducted a field experiment to determine if intra- and interspecific trait variation predicts variation in growth rate of three morphologically distinct species of tropical seaweed. We measured two traits for all species and three traits for the most 'plant-like' (exhibiting differentiated structures that resemble leaves, branches, and stems) species. These traits were either commonly used in previous seaweed studies or are analogs to traits commonly used for vascular plants. We hypothesized there would be positive relationships between growth and the nutrient acquisition trait and a negative relationship between growth and the herbivory and disturbance resistance trait. Across all species, we found significant relationships for both traits, with the resource acquisition trait (thallus surface area to thallus volume ratio) related positively and the resistance trait (thallus dry weight to thallus wet weight ratio) related negatively to growth. When the most 'plant-like' species was analyzed individually, we found all three resource allocation traits (blade wet weight to thallus wet weight ratio, blade volume to thallus volume ratio, and blade surface area to thallus surface area ratio) related positively to growth. To the best of our knowledge, we are the first to empirically link traits of tropical seaweed individuals directly to their performance, thereby identifying functional traits that can be used as proxies for the ecosystem function of productivity.