Oecologia最新文献_第2页

Shading and selection effect-mediated species mixing enhance the growth of native trees in dry tropical forests. 遮荫和选择效应介导的物种混合促进了热带干燥森林原生树木的生长。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-05-01 DOI: 10.1007/s00442-025-05708-1

Abebe Damtew, Emiru Birhane, Christian Messier, Alain Paquette, Bart Muys

{"title":"Shading and selection effect-mediated species mixing enhance the growth of native trees in dry tropical forests.","authors":"Abebe Damtew, Emiru Birhane, Christian Messier, Alain Paquette, Bart Muys","doi":"10.1007/s00442-025-05708-1","DOIUrl":"https://doi.org/10.1007/s00442-025-05708-1","url":null,"abstract":"Tropical dry forests remain vital to rural communities but are often degraded and require restoration. Biodiversity plays a crucial role in maintaining ecosystem functioning and resilience and in providing essential services in these ecosystems. In many cases, restoration involves planting monospecific plantations of robust exotic species; however, detailed ecological studies are required to understand how native species mixtures could become successful for restoration purposes. To address this knowledge gap, a tree diversity experiment (IDENT-Ethiopia) was conducted to examine the impact of species diversity and shading on the growth of nine native tree species in tropical dry forests. The experiment followed a block design with 270 plots, which included a gradient in native tree species richness (1-, 2-, and 4-species mixtures) and a second gradient based on the functional diversity of species traits, including plots of low, medium, and high functional diversity. A shading treatment (shaded and unshaded) was also replicated in triplicate. The stem volume growth of seedlings was measured 1 and 2 years after planting. The results revealed that seedling growth was significantly boosted by increased species richness and shading: stem volume growth increased by 50.9% in shaded environments and 30.5% in mixed plots. The study also demonstrated a positive diversity productivity relationship in 57% of all mixtures. Variance partitioning showed that this overyielding was a result of competitive dominance. In the shaded environment, these productive dominant species were Cordia africana, followed by Dodonaea angustifolia and Dovyalis abyssinica. Overall, the findings suggest that shading and species mixing are crucial factors for promoting seedling growth of native dryland species and ensuring the successful restoration of drylands.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"75"},"PeriodicalIF":2.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144063586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ant foraging: optimizing self-organization as a solution to a traveling salesman problem. 蚂蚁觅食：优化自组织作为旅行推销员问题的解决方案。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-04-30 DOI: 10.1007/s00442-025-05720-5

Natasha Paago, Wilson Zheng, Peter Nonacs

{"title":"Ant foraging: optimizing self-organization as a solution to a traveling salesman problem.","authors":"Natasha Paago, Wilson Zheng, Peter Nonacs","doi":"10.1007/s00442-025-05720-5","DOIUrl":"https://doi.org/10.1007/s00442-025-05720-5","url":null,"abstract":"Foraging ant colonies often face the challenge that food items can appear unpredictably across their territory. This is analogous to traveling salesman/salesperson problems (TSP), wherein solutions to visiting multiple possibly-rewarding sites can vary in cost, travel distance, or site revisits. However, TSP solutions for ants are likely also constrained by cognitive limitations. Rather than envisioning entire routes, ants probably determine their paths by individual-level responses to immediate stimuli, such as nestmate presence or avoiding revisiting an already explored site. Thus, complex group-level search and food retrieval patterns may self-organize from simple individual-level movement rules. Here we derive solutions through simulations that optimize net foraging gains across groups of ant-like agents. Agent search strategies evolve in three spatial networks that differ in travel distances to nests, connectivity, and modularity. We compare patterns from simulations to observed foraging of Argentine ants (Linepithema humile) in identical spatial networks. The simulations and ant experiments find foraging patterns are sensitive to both network characteristics and predictability of food appearance. Simulations are consistent in multiple ways with observed ant behavior, particularly in how network arrangements affect search effort, food encounters, and forager distributions (e.g., clustering in the more connected cells). In some distributions, however, ants find food more successfully than simulations predict. This may reflect a greater premium on encountering food in ants versus increasing find exploitation rates for agents. Overall, the results are encouraging that evolutionary optimization models incorporating relevant ant biology can successfully predict expression of complex group-level behavior.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"73"},"PeriodicalIF":2.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144010211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Pollination efficiency of hummingbirds and flowerpiercers at the flowers of Lobelia laxiflora (Campanulaceae): morphological fit matters. 蜂鸟和穿孔虫在半边莲花上的传粉效率：形态契合问题。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-04-30 DOI: 10.1007/s00442-025-05718-z

Stefan Abrahamczyk, Ruben Dürr, Emanuel Brenes, María A Maglianesi

{"title":"Pollination efficiency of hummingbirds and flowerpiercers at the flowers of Lobelia laxiflora (Campanulaceae): morphological fit matters.","authors":"Stefan Abrahamczyk, Ruben Dürr, Emanuel Brenes, María A Maglianesi","doi":"10.1007/s00442-025-05718-z","DOIUrl":"https://doi.org/10.1007/s00442-025-05718-z","url":null,"abstract":"Research on pollination systems has largely focused on structures of mutualistic networks, whereas pollinator efficiency defining the quality of visits received much less attention. Different flower-visiting animals can vary in their pollination efficiency, e.g. due to their morphology, size or visitation frequency. Here, we analyse several reproductive traits, including flower morphology and reproductive system of Lobelia laxiflora and compare pollination efficiency of flower visitors based on seed set. We found experimentally that Lobelia laxiflora is completely self-incompatible and that the flowers are frequently visited by Colibri cyanotus, which did not show preferences for one flower sex. Diglossa plumbea was a more rare visitor and concentrated on female flowers Diglossa forced their bills deeply into the dorsally open corolla tube but did not pierce flowers. Corolla tube length perfectly fitted bill length of Colibri cyanotus and lots of pollen was deposited on its heads. In contrast, Diglossa plumbea visited flowers by sitting in different positions to them. Therefore, the reproductive flower organs got in contact with different parts of its body. Consequently, Colibri cyanotus was a very efficient pollinator probably due to the high level of trait matching, whereas Diglossa plumbea was not pollinating at all. In conclusion, our study documents a rare case of a temporally limited one-to-one dependency of a plant and a hummingbird species on the population level. Additionally, it highlights the significant role of morphological trait matching and bird´s behaviour in flower handling for efficient pollination and demonstrates that non-adapted flower visitors may fail as pollinators.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"74"},"PeriodicalIF":2.3,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12043751/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144036952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Floral traits and density are uneven drivers of heterospecific pollen deposition in a biodiverse tropical highland community. 在热带高原生物多样性群落中，花性状和密度是异种花粉沉积的不均匀驱动因素。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-04-29 DOI: 10.1007/s00442-025-05715-2

Nathália Susin Streher, Pedro Joaquim Bergamo, Tia-Lynn Ashman, Marina Wolowski, Marlies Sazima

{"title":"Floral traits and density are uneven drivers of heterospecific pollen deposition in a biodiverse tropical highland community.","authors":"Nathália Susin Streher, Pedro Joaquim Bergamo, Tia-Lynn Ashman, Marina Wolowski, Marlies Sazima","doi":"10.1007/s00442-025-05715-2","DOIUrl":"https://doi.org/10.1007/s00442-025-05715-2","url":null,"abstract":"Pollinator sharing among plants within a community can have a variety of consequences, including the transfer of heterospecific pollen (HP) to stigmas, a process hypothesized to be phenotype (at the species and community levels) and flower density-mediated. In a tropical highland community, we investigated whether species' HP receipt depends on species trait means and/or their trait similarity to other species in the community. We also tested whether HP received by individuals is affected by floral density and if so, at what scale. Density responses in HP receipt were then integrated into species trait analysis to determine whether trait patterns persisted across scales after accounting for density. We found that species with stigmas more exposed and with functionally specialized pollination received more HP, and species flowering more synchronously to the community received greater proportions of HP. At the individual level, HP proportion depended on the interaction between conspecific and heterospecific flower densities, with outcomes varying by scale. At the local scale (within 2m2), low-to-medium conspecific flower abundance increased the proportion of HP receipt with the increase of heterospecific floral density, while high conspecific and heterospecific floral densities reduced HP. Conversely, at the landscape scale (across 202m2), high conspecific and heterospecific floral densities enhanced the proportion of HP, while low-to-medium densities had no effect. Our results demonstrate that HP is widespread in the community, driven primarily by flower density, which is scale-dependent, while species traits and their similarity to the community play a secondary role.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"72"},"PeriodicalIF":2.3,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144017004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Decomposing leaf mass into metabolic and structural components explains divergent patterns of trait variation within and among plant species. 将叶质量分解为代谢成分和结构成分解释了植物物种内部和物种之间性状变异的不同模式。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-04-28 DOI: 10.1007/s00442-025-05714-3

Masatoshi Katabuchi, Kaoru Kitajima, S Joseph Wright, Sunshine A Van Bael, Jeanne L D Osnas, Jeremy W Lichstein

{"title":"Decomposing leaf mass into metabolic and structural components explains divergent patterns of trait variation within and among plant species.","authors":"Masatoshi Katabuchi, Kaoru Kitajima, S Joseph Wright, Sunshine A Van Bael, Jeanne L D Osnas, Jeremy W Lichstein","doi":"10.1007/s00442-025-05714-3","DOIUrl":"https://doi.org/10.1007/s00442-025-05714-3","url":null,"abstract":"Across the global flora, interspecific variation in photosynthetic and metabolic rates depends more strongly on leaf area than leaf mass. In contrast, intraspecific variation in these rates is strongly mass-dependent. These contrasting patterns suggest that the causes of variation in leaf mass per area (LMA) may be fundamentally different within vs. among species. In order to explain these contrasting patterns, we developed a statistical modeling framework to decompose LMA into two components-metabolic LMAm (which determines photosynthetic capacity and dark respiration) and structural LMAs (which determines leaf toughness and potential leaf lifespan)-using leaf trait data from tropical forests in Panama and a global leaf-trait database. Decomposing LMA into LMAm and LMAs improves predictions of leaf trait variation (photosynthesis, respiration, and lifespan) within and among species. We show that strong area-dependence of metabolic traits across species can result from multiple factors, including high LMAs variance and/or a slow increase in photosynthetic capacity with increasing LMAm. In contrast, strong mass-dependence of metabolic traits within species results from LMAm increasing from shady to sunny conditions. LMAm and LMAs were nearly independent of each other in both global and Panama datasets, suggesting the presence of at least two important dimensions of leaf functional variation.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"71"},"PeriodicalIF":2.3,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143996008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The functional traits of dominant species exerts strong effects on the biomass of ephemeral plant communities under snow experiment in the arid area, Northwest China. 西北干旱区积雪试验条件下，优势种的功能性状对短期植物群落生物量有较大影响。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-04-27 DOI: 10.1007/s00442-025-05713-4

Ni Ren, Lei Shi, Jinfei Yin, Ailin Zhang

{"title":"The functional traits of dominant species exerts strong effects on the biomass of ephemeral plant communities under snow experiment in the arid area, Northwest China.","authors":"Ni Ren, Lei Shi, Jinfei Yin, Ailin Zhang","doi":"10.1007/s00442-025-05713-4","DOIUrl":"https://doi.org/10.1007/s00442-025-05713-4","url":null,"abstract":"In the mid-latitudes, snow is an important component of seasonal precipitation and one of the most important abiotic factors affecting the ecosystem. Winter snow cover may affect plant growth and community function by changing moisture, temperature, nutrient ions and soil micro-environment. Community biomass is an important index reflecting community function, but the way snow cover affects biomass is not clear. We conducted a manipulative experiment with four levels of snow depths in Gurbantunggut Desert in Central Asia, i.e. snow removal (- S), natural snow depth (CK), doubling of snow depth (+ 2Sdouble) and tripling of snow depth (+ 3Striple). We found significantly increased plant community biomass with increasing level of snow depth as a result of increased height of the dominant species Erodium oxyrhinchum. Increases in the snow depth significantly increased the community species richness, but had no significant effect on diversity indexes. The effects of snow cover on the plant community biomass were mainly resulted from soil water of snow melting. With the increase of snow cover depth, the increase of community biomass was mainly affected by the functional traits of the dominant species. This result is consistent with the \"mass ratio hypothesis\". The results indicate that the increase of snow cover will promote the increase of short-lived plant productivity in arid areas, and the response of productivity to snow cover is mainly realized through the change of functional traits of dominant species.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"70"},"PeriodicalIF":2.3,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143972213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effects of inducible defenses on population stability in Paramecium aurelia. 诱导防御对草履虫种群稳定性的影响。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-04-25 DOI: 10.1007/s00442-025-05709-0

Catherine M McClure, Kayla Hancey, Edd Hammill

{"title":"The effects of inducible defenses on population stability in Paramecium aurelia.","authors":"Catherine M McClure, Kayla Hancey, Edd Hammill","doi":"10.1007/s00442-025-05709-0","DOIUrl":"https://doi.org/10.1007/s00442-025-05709-0","url":null,"abstract":"Predator-prey dynamics have been studied across many different systems over the past 80 years. The outcomes of this past research have yielded useful theoretical and empirical models of predator-prey systems. However, what stabilizes predator-prey dynamics is often debated and not well understood. One proposed stabilizing mechanism is that the inducible defenses of prey decrease predation risk by creating a portion of the prey population that is invulnerable to predation, leading to a reduction in trophic interaction strength. We investigated the potential stabilizing effects of inducible morphological defenses in the protozoan, Paramecium aurelia, across a range of nutrient concentrations to better understand a potential stabilizing mechanism of systems under nutrient enrichment (Paradox of Enrichment). Using P. aurelia clones that differ in their ability to induce defenses, we found that the most susceptible clone that does not express any known inducible defense showed reduced survival along a gradient of increasing nutrient concentrations. Clones expressing either inducible or permanent morphological defenses (increasing body width in response to predation threat) were not significantly affected by increasing nutrients demonstrating a potential benefit of these defenses. However, when evaluating population stability (coefficient of variation) rather than survival, we found a stabilizing effect of increasing nutrients on all P. aurelia populations. Our results demonstrate varied effects of increasing nutrients on population stability depending on the level of defense expression and stability metric used. Our results reinforce that choice of stability metric can alter conclusions about population stability and persistence, highlighting the need to adopt multiple metrics and approaches.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"69"},"PeriodicalIF":2.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143973130","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Food, weather, and population density, not number of helpers, drive overwinter survival in Florida Scrub-Jays. 食物、天气和人口密度，而不是帮手的数量，决定了佛罗里达矮丛鸦的越冬生存。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-04-25 DOI: 10.1007/s00442-025-05707-2

Guy Beauchamp, Tori D Bakley, John W Fitzpatrick, Sahas Barve

{"title":"Food, weather, and population density, not number of helpers, drive overwinter survival in Florida Scrub-Jays.","authors":"Guy Beauchamp, Tori D Bakley, John W Fitzpatrick, Sahas Barve","doi":"10.1007/s00442-025-05707-2","DOIUrl":"https://doi.org/10.1007/s00442-025-05707-2","url":null,"abstract":"Survival is affected by many ecological factors including food, weather, population density, and predation pressure, but documenting survival rates together with all these associated variables requires long-term observational and ecological data from a large, marked population. We used 33 years of data on Florida Scrub-Jay (Aphelocoma coerulescens) demography, local weather, and food availability to assess determinants of jay survival during the non-breeding season (September to February). We used the known-fate model from program MARK to analyze the probability of survival for breeders and juveniles while independently testing multiple covariates. Breeder survival increased when territory size was larger, decreased when local population density was higher, and did not vary with mean daily minimum temperature in the winter. Juvenile survival slightly increased with mean daily minimum temperature in the winter but showed no association with territory size or local population density. For both breeders and juveniles, odds of survival increased with presence of both breeders in the territory and higher acorn availability, and decreased with higher total winter rainfall. Neither breeder nor juvenile survival was correlated with number of helpers or juveniles in the group. Our results emphasize the importance of environmental variables in driving adult and juvenile survival in this declining endangered bird.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"68"},"PeriodicalIF":2.3,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144006629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Seasonal plasticity in the thermal sensitivity of metabolism but not water loss in a fossorial ectotherm. 在化石变温动物中，代谢的热敏性具有季节性可塑性，而水分损失不具有季节性可塑性。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-04-23 DOI: 10.1007/s00442-025-05711-6

Danilo Giacometti, Glenn J Tattersall

{"title":"Seasonal plasticity in the thermal sensitivity of metabolism but not water loss in a fossorial ectotherm.","authors":"Danilo Giacometti, Glenn J Tattersall","doi":"10.1007/s00442-025-05711-6","DOIUrl":"https://doi.org/10.1007/s00442-025-05711-6","url":null,"abstract":"Ectotherms from highly seasonal habitats should have enhanced potential for physiological plasticity to cope with climatic variability. However, whether this pattern is applicable to fossorial ectotherms, who are potentially buffered from thermal variability, is still unclear. Here, we evaluated how seasonal acclimation (spring vs. autumn) in the lab affected the thermal sensitivity of standard metabolic rates (SMR) and rates of evaporative water loss (EWL) in the spotted salamander (Ambystoma maculatum). We hypothesised that temperature would have both acute and prolonged effects over traits (i.e., exposure to test temperatures and seasonal acclimation, respectively). After accounting for body mass and sex, we found that acute changes in temperature led to an increase in SMR and EWL. Additionally, SMR differed between seasons, but EWL did not. Salamanders had lower SMR in the spring, suggesting that energy may be allocated toward overwintering emergence and breeding. By contrast, maintaining higher SMR in the autumn may allow salamanders to forage aboveground on rainy nights to replenish energy reserves in preparation for the winter. The seasonal constancy of EWL suggests that salamanders should rely on behavioural rather than physiological modulations to mitigate possible detrimental effects of warming over the maintenance of hydric state. Despite the common assumption that fossorial ectotherms are buffered from thermal effects, our study shows that functional differences between seasons (i.e., breeding in the spring and provisioning in the autumn) are accompanied by seasonal changes in energetic and hydric requirements.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"67"},"PeriodicalIF":2.3,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144024995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Developmental timing of flash drought influences offspring survival in the field. 突发性干旱的发育时机影响后代在田间的生存。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-04-17 DOI: 10.1007/s00442-025-05702-7

Ayley L Shortridge, Morgan A Clark, Paulette Gutierrez, Caleb J Krueger, Fredric J Janzen

{"title":"Developmental timing of flash drought influences offspring survival in the field.","authors":"Ayley L Shortridge, Morgan A Clark, Paulette Gutierrez, Caleb J Krueger, Fredric J Janzen","doi":"10.1007/s00442-025-05702-7","DOIUrl":"https://doi.org/10.1007/s00442-025-05702-7","url":null,"abstract":"Extreme climate events, including rapid-onset flash droughts, are increasing with anthropogenic climate change. Flash droughts impact growth and survival of plants, microbes, and invertebrates, yet less is known about their ecological consequences in vertebrates. Although constant water deprivation during vertebrate embryonic development influences a range of offspring traits, the effects of acute, short-term hydric stress are less well-studied, particularly in the context of subsequent survival in the field. In this study, we combined experimental manipulation in the laboratory with a large-scale field experiment to examine the effects of the developmental timing of flash drought in an oviparous vertebrate model. We exposed common snapping turtle (Chelydra serpentina) eggs to simulated flash drought events at different stages of embryonic development and measured the effects on growth and offspring phenotypes. We then conducted an experimental release in the field to evaluate offspring survival during migration from the nest. Flash drought during mid-to-late development decreased egg mass, incubation time, and hatchling body size, while flash drought during late development substantially limited post-hatching survival in the field. This study is among the first to examine juvenile survival effects of flash drought during embryonic development in a vertebrate system. Our results suggest that early-life mortality is likely to increase as flash droughts intensify with climate change. This study contributes to a growing body of research on the ecological consequences of extreme climate events and highlights the importance of considering these events in a developmental context.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 5","pages":"65"},"PeriodicalIF":2.3,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12006206/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143996171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0