Oecologia最新文献_第2页

Correction: Increased temperatures could heighten vulnerability of an ant-plant mutualism. 更正：温度升高会增加反植物共生的脆弱性。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-07-08 DOI: 10.1007/s00442-025-05766-5

Talita Câmara, Nathália Thais Cavalcante, Hiram Marinho Falcão, Esther Santana, Gisele Dos Santos Silva Teixeira, Xavier Arnan

引用次数: 0

The long and short of it: travel distance and territorial intruder pressure predict central-place spawning tactics among Caribbean Stegastes damselfishes. 它的长和短：旅行距离和领土入侵者的压力预测了加勒比stegasted豆娘鱼的中心产卵策略。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-07-08 DOI: 10.1007/s00442-025-05761-w

Taylor L Hobbs, Richard S Nemeth, Donna Nemeth, Kayla M Blincow, Paul C Sikkel

{"title":"The long and short of it: travel distance and territorial intruder pressure predict central-place spawning tactics among Caribbean Stegastes damselfishes.","authors":"Taylor L Hobbs, Richard S Nemeth, Donna Nemeth, Kayla M Blincow, Paul C Sikkel","doi":"10.1007/s00442-025-05761-w","DOIUrl":"10.1007/s00442-025-05761-w","url":null,"abstract":"Central place activities present conflicting demands or tradeoffs between activities at and away from the central place. Stegastes damselfishes are small, mostly reef-associated fishes that are common in shallow tropical and sub-tropical marine environments. Both sexes defend a territory consisting of their food supply and shelter sites, with male territories also including a nest where females lay eggs which are then guarded by the male. Females therefore need to leave their territory to spawn in male nests, putting them at risk of attack during travel and leaving their territory exposed to intruders while away. Female egg-laying tactics can vary among and within species-some complete spawning during a single, extended bout, while others do so in multiple bouts, separated by visits to their territory. Spawning behavior and behaviors associated with territoriality of 101 individuals from 6 species were observed between June 2022 and May 2023 to identify and quantify the factors that influence variation in spawning tactics both within and among Stegastes species. Specifically, we tested two predictions of the hypothesis that dividing spawning with a single male into bouts allows individuals to balance the tradeoff between travel costs and intruder pressure for females of permanently territorial damselfishes: (1) intruder pressure will be positively related to the number of spawning trips among species and/or among females within species; and (2) travel distance will be negatively related to the number of spawning trips. Results of this study showed that Stegastes females increase their spawning bouts with an increase in intruder pressure and decrease their spawning bouts with an increase in travel distance.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 8","pages":"127"},"PeriodicalIF":2.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12238210/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144591885","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

Without the locals' aid: no evidence for a role of admixture in the colonisation success of Italian wall lizards. 没有当地人的帮助：没有证据表明意大利壁虎在成功的殖民中扮演了混合的角色。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-07-08 DOI: 10.1007/s00442-025-05769-2

Lisa Van Linden, Hannes Svardal, Anamaria Štambuk, Anthony Herrel, Raoul Van Damme

{"title":"Without the locals' aid: no evidence for a role of admixture in the colonisation success of Italian wall lizards.","authors":"Lisa Van Linden, Hannes Svardal, Anamaria Štambuk, Anthony Herrel, Raoul Van Damme","doi":"10.1007/s00442-025-05769-2","DOIUrl":"10.1007/s00442-025-05769-2","url":null,"abstract":"The successful establishment of small founding populations introduced into novel environments often represents a paradox, given the genetic challenges they face. Genetic admixture, whether intra- or interspecific, may offer a solution by enhancing the genetic diversity and adaptability of the population. Here, we explore the role of genetic admixture in the rapid establishment and adaptation of the Italian wall lizard (Podarcis siculus) introduced on Pod Mrčaru, a small islet in the Adriatic Sea. Introduced in 1971 in a small group of ten individuals from a nearby island, this population rapidly adapted to its new environment, outcompeting the native Dalmatian wall lizard (Podarcis melisellensis) and exhibiting striking ecological and phenotypic shifts. Using whole-genome sequencing data from P. siculus populations on Pod Mrčaru and neighbouring islands and from P. melisellensis, we investigated population structure, admixture, and gene flow to test whether inter- or intraspecific genetic exchange contributed to the successful establishment and divergence of the introduced population. Despite the sympatric presence of P. melisellensis during the introduction of P. siculus on Pod Mrčaru, and thus the opportunity for genetic exchange, we found no evidence of hybridisation between the two species. Even amongst neighboring island populations of P. siculus, we observed only limited gene flow, suggesting relatively independent evolution of the populations since their establishment on the islands. These findings highlight the potentially significant roles of distinct selective pressures and/or ecological and phenotypic plasticity, rather than genetic exchange, in driving the population's rapid adaptation to a novel environment.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"125"},"PeriodicalIF":2.3,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144584384","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

Running to the mountains: changes in plant-pollinator networks structure over space. 跑到山上：植物传粉者网络结构在空间上的变化。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-07-03 DOI: 10.1007/s00442-025-05764-7

Yasmine Antonini, Montserrat Arista, Fernanda Vieira da Costa, Alejandro Núñez Cabajal, Juan Arroyo

{"title":"Running to the mountains: changes in plant-pollinator networks structure over space.","authors":"Yasmine Antonini, Montserrat Arista, Fernanda Vieira da Costa, Alejandro Núñez Cabajal, Juan Arroyo","doi":"10.1007/s00442-025-05764-7","DOIUrl":"10.1007/s00442-025-05764-7","url":null,"abstract":"Plant-pollinator networks play a crucial role in supporting biodiversity and ecosystem functioning, especially in mountainous regions. Plant-pollinators networks experience various influences from biotic and abiotic factors across elevation gradients and flowering seasons, impacting species distribution, interactions, and community structures. In our study, we examined plant-pollinator network structures at 14 sites across elevations from 1000 to 1800 m above sea level in a Mediterranean mountainous area. The study aimed to determine if plant-pollinator network structures remain consistent across different spatial contexts (elevations and habitats) and to assess the impact of abiotic drivers on network structure. We documented a total of 3343 interactions involving 343 pollinator species and 44 plant species, with bees and flies as prominent participants. Results showed low nestedness, which increased only with rainfall, and was generally higher in forests than in outcrop areas. High specialization was noted, with an increase in specialization correlated with rainfall. Network modularity was more pronounced in outcrops compared to forests, with soil temperature and rainfall boosting modularity. Interaction diversity was greater in outcrops and showed a positive relationship with rainfall. High robustness correlated inversely with specialization. Our findings highlight that flower and pollinator diversity, combined with climatic factors, predict network modularity, specialization, and robustness. This research illustrates how network structures differ across habitat types and elevation, revealing potential vulnerabilities of plant-pollinator interactions to environmental changes throughout the flowering season. We also highlight the potential impact of climate change on pollination networks on mountain areas (as hotspots of biodiversity).","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"122"},"PeriodicalIF":2.3,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144554056","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

Do leaves make waves? Detecting vibrations from rapid movements in the sensitive plant, Mimosa pudica. 树叶会引起波浪吗？检测敏感植物含羞草快速运动产生的振动。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-07-03 DOI: 10.1007/s00442-025-05757-6

Sabrina C J Michael, Reginald B Cocroft

{"title":"Do leaves make waves? Detecting vibrations from rapid movements in the sensitive plant, Mimosa pudica.","authors":"Sabrina C J Michael, Reginald B Cocroft","doi":"10.1007/s00442-025-05757-6","DOIUrl":"10.1007/s00442-025-05757-6","url":null,"abstract":"There is great current interest in the field of plant acoustics, including the potential for plants to both perceive and produce acoustic cues. Many plants emit high-frequency clicks under water stress or injury, and the growing root tips of corn seedlings produce audio-frequency clicks. We investigated the possibility that rapid plant movements produce acoustic cues in the form of plant-borne vibration, focusing on the leaf-folding movements of the sensitive plant, Mimosa pudica. We induced leaf-folding while recording vibrations from the leaf base using a laser vibrometer. Having recorded characteristic and relatively high-amplitude vibrations, we then assessed the source of the vibrations: the physiologic motor that drives movement, or the contact between moving parts of the leaf. Vibrations were produced when folding pinnules contacted neighboring pinnules and the rachis of the stem. The frequency range and amplitude of the vibrations are comparable to other vibrational cues that both plants and insects perceive and respond to. In nature, leaf folding is induced by contact with potential herbivores. Potential receivers of leaf-folding vibrations include the attacking herbivore, for which the leaf movement and vibration may constitute a multimodal startle display; nearby predatory insects, for which the vibration provides a cue of prey location; and leaves on the same or neighboring plants.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"124"},"PeriodicalIF":2.3,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144560690","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

Foraging flexibility in response to at-sea constraints in a deep diver, the king penguin: an experimental study. 一项实验研究：深潜水员王企鹅对海上限制的觅食灵活性。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-07-03 DOI: 10.1007/s00442-025-05754-9

Camille Lemonnier, Charles-André Bost, Nicolas Joly, Antoine Stier, Jean-Patrice Robin, Yves Handrich, Anne Cillard, Marine Montblanc, Pierre Bize, Vincent A Viblanc

{"title":"Foraging flexibility in response to at-sea constraints in a deep diver, the king penguin: an experimental study.","authors":"Camille Lemonnier, Charles-André Bost, Nicolas Joly, Antoine Stier, Jean-Patrice Robin, Yves Handrich, Anne Cillard, Marine Montblanc, Pierre Bize, Vincent A Viblanc","doi":"10.1007/s00442-025-05754-9","DOIUrl":"10.1007/s00442-025-05754-9","url":null,"abstract":"When foraging, marine top predators rely on increasingly unpredictable oceanographic structures. Central place foragers are particularly affected. Their efficiency at replenishing their body reserves at sea while feeding their offspring on land relies on accurately targeting predictable foraging locations. Therefore, increased time and effort spent searching for resources is likely to compromise reproduction. Here, we used an experimental design to assess the flexibility of breeding king penguin (Aptenodytes patagonicus) foraging behavior in response to harsh conditions at sea, and examined the consequences on the growth and survival of their chick. We tested for behavioral adjustments to compensate for experimentally increased foraging workload, obtained by the application of a hydrodynamic drag effect. Compared to controls, treated adults more directly targeted a predictable hydrographic feature, the Polar Front, while limiting the increased costs of deep diving. Treated adults significantly increased hunting activity at shallower depths where the effect of treatment on diving efficiency was negligible. Our experiment resulted in decreased body mass gain during the brooding stage of chicks raised by treated parents compared to controls, with no direct effects on chick survival up to the winter period, but significant negative effects during winter. We identified two different strategies for foraging in king penguins: (1) foraging at the Polar Front where prey patches are more predictable and accessible at shallower depths or (2) foraging closer to the colony by targeting preys at deeper depths. These results highlight the possibility of a trade-off between distance and depth in breeding king penguin foraging behavior.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"123"},"PeriodicalIF":2.3,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144560691","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

Changes of cyprinid fishery resources in Lake Biwa over 57 years: association with multiple stressors and restoration measures. 琵琶湖鲤类渔业资源57年来的变化：多压力源与恢复措施的关联

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-07-02 DOI: 10.1007/s00442-025-05762-9

Shin-Ichiro S Matsuzaki, Keiichi Fukaya, Kohji Mabuchi, Takeshi Kikko, Noriko Takamura

{"title":"Changes of cyprinid fishery resources in Lake Biwa over 57 years: association with multiple stressors and restoration measures.","authors":"Shin-Ichiro S Matsuzaki, Keiichi Fukaya, Kohji Mabuchi, Takeshi Kikko, Noriko Takamura","doi":"10.1007/s00442-025-05762-9","DOIUrl":"10.1007/s00442-025-05762-9","url":null,"abstract":"Multiple stressors can threaten the resources of inland fisheries, but responses to these stressors may differ among fish species. We used a long-term fishery dataset to quantify the CPUE trajectories of eight cyprinid taxa in the south basin of Lake Biwa that have been stressed by lakeshore development, artificial water-level regulation, exotic fish species, and climate change. A Bayesian state-space model revealed that the CPUEs of all eight taxa substantially declined from 1966 to 2022. For Opsariichthys uncirostris, Ischikauia steenackeri, Sarcocheilichthys spp., Cyprinus carpio, and Carassius spp., the average population growth rates decreased from 1976 to 1991, when lakeshore development occurred and largemouth bass populations increased dramatically. For the three remaining taxa (Zacco platypus, Gnathopogon caerulescens, and Squalidus spp.), the average population growth rates decreased from 1992 to 2022, when new water-level regulations were implemented and bluegill populations increased substantially. The former five taxa exhibited longer maximum body length and life span, later maturation, and higher fecundity than the latter three taxa. This suggests that life-history traits may determine how species respond to different stressors. Unlike the effects of these three abrupt stressors, those of climate, a gradual stressor, were negative for seven taxa, although not statistically significant. We also found that the population growth rates of Gnathopogon caerulescens and Ischikauia steenackeri increased recently after implementation of restoration measures (fishing moratorium and stocking of paddy-reared/captive-bred individuals). Our results suggest that cumulative anthropogenic stressors depleted the resource of cyprinids but that the outcome of current restoration measures may be positive.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"121"},"PeriodicalIF":2.3,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12222436/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144554055","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

Biological nitrogen fixation activity by co-occurring moss species is affected by their ability to absorb nitrogen from canopy throughfall. 共生苔藓的生物固氮活性受其从冠层穿透物中吸收氮的能力的影响。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-07-02 DOI: 10.1007/s00442-025-05751-y

Charlotte Blasi, Daniel Houle, Gaëlle Vacherand, Jean-Philippe Bellenger

{"title":"Biological nitrogen fixation activity by co-occurring moss species is affected by their ability to absorb nitrogen from canopy throughfall.","authors":"Charlotte Blasi, Daniel Houle, Gaëlle Vacherand, Jean-Philippe Bellenger","doi":"10.1007/s00442-025-05751-y","DOIUrl":"10.1007/s00442-025-05751-y","url":null,"abstract":"Biological nitrogen fixation in feathermosses provides an important source of exogenous nitrogen to boreal forest ecosystems. Yet there is a limited understanding of how canopy condition and throughfall influence N fixation rates. To decipher the effect of climatic variables (i.e., temperature, humidity, and light) and nitrogen deposition chemistry (i.e., inorganic and organic N) on moss BNF, we monitored climatic variables, biological N2-fixation, cyanobacteria biomass, and some moss traits of two co-occurring moss species in black spruce forests in Eastern Canada (Pleurozium schreberi and Ptilium crista-castrensis) over two growing seasons in undisturbed mature forests and forest gaps (windfalls). We further investigated the ability of both species to retrieve nitrogen from deposition using 15N tracers in the field and the lab. Both species achieved comparable BNF in forest gaps. In the mature forest, BNF decreased in both species compared to the forest gap but was significantly higher in P. crista-castrensis (about 10 fold) than in P. schreberi. In both species, the decrease in BNF activity between forest gaps and mature forests was likely driven by the slightly less favorable climatic conditions for BNF (e.g., temperature and light). However, BNF was further reduced in P. schreberi due to better nitrogen sorption from the throughfall leading to reduced cyanobacteria colonization and cyanobacteria-specific BNF activity. These results show that co-occurring moss species are affected in a contrasted manner by changes in the composition of nitrogen deposition.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"119"},"PeriodicalIF":2.3,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144541629","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

Sex and age predict habitat selection in the world's most geographically extensive lion population. 性别和年龄预测了世界上地理上最广泛的狮子种群的栖息地选择。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-07-02 DOI: 10.1007/s00442-025-05744-x

Dominik T Bauer, Genevieve E Finerty, M Kristina Kesch, Christos Astaras, Robert A Montgomery, David Heit, Joerg U Ganzhorn, David W Macdonald, Andrew J Loveridge

{"title":"Sex and age predict habitat selection in the world's most geographically extensive lion population.","authors":"Dominik T Bauer, Genevieve E Finerty, M Kristina Kesch, Christos Astaras, Robert A Montgomery, David Heit, Joerg U Ganzhorn, David W Macdonald, Andrew J Loveridge","doi":"10.1007/s00442-025-05744-x","DOIUrl":"10.1007/s00442-025-05744-x","url":null,"abstract":"Conservation of large carnivore populations requires effective management strategies that promote landscape-scale protection and genetic connectivity. Pivotal to the success of these strategies is sufficient evidence, including quantifying the processes that govern species distribution. We used telemetry data from 63 lions from the Kavango-Zambezi Transfrontier Conservation Area (KAZA TFCA) in southern Africa to analyze inter-demographic differences in habitat relationships using a mixed-effects resource selection analysis approach. In this semi-arid landscape, some of the most important drivers of habitat selection are surface water and precipitation, which in turn regulate prey abundance. Predicted relative probability of habitat selection was highest near water irrespective of age and sex; however, the effect of precipitation varied depending on the demographic class. Adult lions and subadult females preferred habitat with above average rainfall; however, the opposite was true for subadult males which showed a strong aversion to precipitation. Across all four demographic classes, relative probability of habitat selection was generally positively associated with higher levels of prey abundance with the exception of gemsbok which was negatively correlated with adult female, subadult male, and subadult female habitat use. The predicted distributions for all four demographic classes were widespread across multiple different land-use types, highlighting the need to extend the traditional concept of formally protected areas to include multi-use landscapes and support large-scale transboundary conservation initiatives.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"120"},"PeriodicalIF":2.3,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12222360/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144554057","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

Sensitivity to elevated salinity in coastal dune plants. 海岸沙丘植物对盐度升高的敏感性。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-07-01 DOI: 10.1007/s00442-025-05759-4

Anna Halpin-McCormick, Tamara Sherrill, Catherine Davenport, Dustin Wolkis, Seana K Walsh, Kasey E Barton

{"title":"Sensitivity to elevated salinity in coastal dune plants.","authors":"Anna Halpin-McCormick, Tamara Sherrill, Catherine Davenport, Dustin Wolkis, Seana K Walsh, Kasey E Barton","doi":"10.1007/s00442-025-05759-4","DOIUrl":"10.1007/s00442-025-05759-4","url":null,"abstract":"Coastal dune plants provide critical ecosystem and cultural services, which are severely threatened by ongoing climate change and sea-level rise. Coastal habitats account for a disproportionate extent of land on islands, emphasizing the importance of these ecosystems for island biodiversity. We investigated salinity tolerance in a diverse pool of 19 native and invasive plant species from Hawai'i's coastal dunes for insights into their vulnerability to sea-level rise. Salinity tolerance was investigated experimentally in seedling and juveniles by treating plants with artificial seawater for 3 weeks, followed by a 2-week freshwater recovery period. For mechanistic insights, stomatal conductance and leaf chlorophyll content were measured before, during, and after seawater treatment. Salinity tolerance was highly variable among species. The least tolerant species experienced 100% mortality and up to 95% reductions in growth in seawater compared to freshwater conditions. The most tolerant species grew more in seawater, consistent with a halophytic strategy. Most species had intermediate salinity tolerance, with generally high survival and variable reductions in growth under seawater treatment. Phenotypic plasticity in stomatal conductance and chlorophyll content was widespread, and species that maintained the highest levels of stomatal conductance and leaf chlorophyll content under seawater had the greatest biomass tolerance. Despite growing in close proximity to the ocean, Hawai'i's coastal dune plants are highly variable in salinity tolerance, and sea-level rise is likely to be a major threat, leading to reduced seedling establishment and population declines in some species, with cascading effects on associating biodiversity, emphasizing the need for urgent conservation actions.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"117"},"PeriodicalIF":2.3,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144541631","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