Oecologia最新文献_第3页

Contrasting risk patterns from human hunters and a large carnivore influence the habitat selection of shared prey. 来自人类猎人和大型食肉动物的不同风险模式影响了共同猎物的栖息地选择。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-07-01 DOI: 10.1007/s00442-025-05742-z

G Ausilio, C Wikenros, H Sand, O Devineau, P Wabakken, A Eriksen, M Aronsson, J Persson, K M Mathisen, B Zimmermann

{"title":"Contrasting risk patterns from human hunters and a large carnivore influence the habitat selection of shared prey.","authors":"G Ausilio, C Wikenros, H Sand, O Devineau, P Wabakken, A Eriksen, M Aronsson, J Persson, K M Mathisen, B Zimmermann","doi":"10.1007/s00442-025-05742-z","DOIUrl":"10.1007/s00442-025-05742-z","url":null,"abstract":"Spatial patterns of human hunting and predation risk are mediated by the physical landscape, with hunting risk often associated with different habitat features than those linked to large carnivores. Risk from hunters and carnivores also varies over time, and prey may adjust anti-predator strategies accordingly. We used GPS data from 17 female moose (Alces alces) tracked over two fall-winter seasons (2018-2020) in south-central Scandinavia to study moose habitat selection in response to diel and seasonal variation in risk from wolves (Canis lupus) and human hunters. Predation risk was quantified using spatial models based on known wolf and hunter kill-sites. We applied resource selection functions and Generalized Additive Mixed Models to model moose habitat selection in response to wolf and hunting risk. Moose avoided high-risk hunting areas during the day throughout the hunting season but relaxed this avoidance at night and after the season ended. In contrast, we found no evidence that moose adjusted habitat use in response to diel or seasonal variation in wolf predation risk. These results suggest that human hunting was the primary driver of moose habitat selection during the hunting season, becoming less relevant when hunting ceased. Our findings highlight the dominant role of human risk in shaping prey behaviour and the importance of accounting for hunting when evaluating predator-prey dynamics in human-dominated systems. An increased understanding of the risk effects arising from humans and large carnivores on prey can deepen our understanding of the ecological roles of predators and humans.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"118"},"PeriodicalIF":2.3,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12213882/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144541630","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

Tissue-specific energetics of the invasive Asian shore crab Hemigrapsus sanguineus throughout its range and through time. 入侵的亚洲滨蟹血石蟹在其分布范围和时间上的组织特异性能量学。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-06-28 DOI: 10.1007/s00442-025-05756-7

Blaine D Griffen, Laura S Fletcher, Tanner C Reese, Michele F Repetto, Nanette Smith, Carter K Stancil, Benjamin J Toscano

{"title":"Tissue-specific energetics of the invasive Asian shore crab Hemigrapsus sanguineus throughout its range and through time.","authors":"Blaine D Griffen, Laura S Fletcher, Tanner C Reese, Michele F Repetto, Nanette Smith, Carter K Stancil, Benjamin J Toscano","doi":"10.1007/s00442-025-05756-7","DOIUrl":"10.1007/s00442-025-05756-7","url":null,"abstract":"Organisms with broad geographic distributions that inhabit seasonal environments often demonstrate characteristics that differ spatially and temporally. It has been hypothesized that these variable characteristics may play important roles in the success of invasive species. Further, physiological characteristics should be closely linked to individual energetic strategies, which can also vary spatially and temporally. We use tissue-specific energy density and total energy content to examine energy allocation strategies in the invasive Asian shore crab Hemigrapsus sanguineus across seasons and throughout its North American invasive range. We show that tissue energy density and total tissue energy vary considerably with location and season. Energetic strategies are consistent with an expanding northern range edge and a static southern range edge. Our results also provide insight into patterns that occur broadly across phylogeny, including reduced growth rates with body size and seasonal reproductive patterns. This study demonstrates the utility of tissue-specific energetics as an ecophysiological tool for understanding the energetic strategies of invasive (and other) species throughout their ranges and across seasons.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"116"},"PeriodicalIF":2.3,"publicationDate":"2025-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144529043","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

Altered surface behaviour in earthworms (Lumbricus terrestris) under artificial light at night. 夜间人工光照下蚯蚓（Lumbricus terrestris）表面行为的改变

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-06-27 DOI: 10.1007/s00442-025-05750-z

Jiaqing Cai, Jonathan Bennie, Kevin J Gaston

{"title":"Altered surface behaviour in earthworms (Lumbricus terrestris) under artificial light at night.","authors":"Jiaqing Cai, Jonathan Bennie, Kevin J Gaston","doi":"10.1007/s00442-025-05750-z","DOIUrl":"10.1007/s00442-025-05750-z","url":null,"abstract":"Artificial light at night (ALAN) has been spreading rapidly globally, disrupting animal physiology, behaviour and associated ecosystem processes. However, impacts on soil-dwelling animals that are nocturnally active aboveground remain underexplored. Here, we examined these for the earthworm Lumbricus terrestris L., an ecosystem engineer that frequently surfaces at night. We recorded four types of L. terrestris nighttime surface behaviour, including overall surface activity, and three finer categories: risk exploration before surfacing, foraging and over-surface exploration. One experiment (controlled-temperature-room-based) tested these behavioural responses to seven ALAN levels, whilst another (field-based) investigated whether behavioural responses can consequently affect litter removal and soil respiration. In the controlled-temperature room, compared to darkness, L. terrestris significantly decreased their overall nighttime foraging at ALAN levels of 10 lx and above, with these negative ALAN effect sizes increasing with light intensity. With more risk exploration before surfacing, L. terrestris still showed greatly reduced foraging activity at the 10 lx ALAN level in the field. However, such altered behaviour did not cause clear patterns in either litter removal or soil respiration. Our results confirm that 10 lx ALAN (or potentially lower) is effective in disrupting L. terrestris nighttime surface behaviour, but this may have limited impacts on short-term C cycling.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"114"},"PeriodicalIF":2.3,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12205020/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144507155","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

Energetic benefits of prey choice for a shark-eating shark. 对吃鲨鱼的鲨鱼来说，选择猎物的能量优势。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-06-27 DOI: 10.1007/s00442-025-05758-5

Erin T Spencer, Lisa A Hoopes, Jack J Morris, Demian D Chapman, Valerie Hagan, Mark Johnson, Nicholas L Payne, Yuuki Y Watanabe, Ruth E Dunn, Yannis P Papastamatiou

{"title":"Energetic benefits of prey choice for a shark-eating shark.","authors":"Erin T Spencer, Lisa A Hoopes, Jack J Morris, Demian D Chapman, Valerie Hagan, Mark Johnson, Nicholas L Payne, Yuuki Y Watanabe, Ruth E Dunn, Yannis P Papastamatiou","doi":"10.1007/s00442-025-05758-5","DOIUrl":"10.1007/s00442-025-05758-5","url":null,"abstract":"Optimal foraging theory has been used to understand the foraging choices of animals but is rarely applied to large predatory fishes due to difficulties measuring their behavior in the wild. Great hammerhead sharks (Sphyrna mokarran) are atypical among sharks in that they prefer large prey, such as other sharks and large teleost species, rather than smaller teleost or invertebrate prey. Great hammerheads are known to hunt blacktip sharks (Carcharhinus limbatus) that form large seasonal aggregations off the coast of southern Florida. However, the foraging advantage of this dietary choice and hunting strategy is unclear. We equipped great hammerheads with biologging sensors (speed, video, sonar) to estimate swimming metabolic rates and prey encounter rates and then model the foraging benefits of hunting large prey (sharks) versus small prey (reef-associated teleosts). We estimate great hammerheads need to consume 0.7% body weight (BW) per day of shark prey or 0.9% BW per day of teleost prey. Our foraging model predicts that a ~ 110 kg hammerhead would only need to consume a whole ~ 25 kg blacktip shark once every 3 weeks and could survive 2 months during low blacktip density periods without feeding before starving to death. However, it would need to capture one to two ~ 1 kg teleost per day to avoid falling below its energetic baseline. Great hammerhead sharks may obtain significant benefits by hunting sharks in southern Florida, especially during the winter when prey density is high.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"113"},"PeriodicalIF":2.3,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144507156","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

Swollen-thorn acacias increased their investments in resident ants during an El Niño event. 在El Niño活动期间，肿刺金合欢增加了对蚂蚁的投资。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-06-27 DOI: 10.1007/s00442-025-05763-8

Cristian E Molina, Jonah M Naugle, Maikol Guevara, Emmy B Zeilstra, Yorlenis González, Sabrina Amador Vargas

{"title":"Swollen-thorn acacias increased their investments in resident ants during an El Niño event.","authors":"Cristian E Molina, Jonah M Naugle, Maikol Guevara, Emmy B Zeilstra, Yorlenis González, Sabrina Amador Vargas","doi":"10.1007/s00442-025-05763-8","DOIUrl":"10.1007/s00442-025-05763-8","url":null,"abstract":"Species interactions are frequently context-specific. Climate fluctuations can inflict stress on individuals, inducing plasticity in their behavior or changes in resource allocation. Obligate mutualisms may be particularly sensitive to such fluctuations if they affect the quantity, quality, or timing of investments between partners. In the obligate mutualism between Pseudomyrmex ants and swollen-thorn acacias (Vachellia collinsii), the ants defend their host plant in exchange for domatia, extrafloral nectar, and protein-rich Beltian bodies. Ant reward size is known to vary temporally and according to the identity of the associated ant partner, with better-quality defenders (P. spinicola and P. simulans) receiving relatively more plant resources than non-defending ants. We studied how an El Niño-related drought impacted the investments of acacias in their ant colonies. Hence, we resampled acacias that were previously measured for ant rewards during a neutral El Niño Southern Oscillation period again during El Niño 2023. We predicted that water limitations would reduce the resources available for allocation toward ant colonies and that acacias hosting obligate-nesting Pseudomyrmex would show a greater decrease in ant rewards compared to plants associated with non-defending ants (Crematogaster sp.). Unexpectedly, we found that acacias allocated more resources to ant rewards in 2023, irrespective of the ant partner. Heightened herbivore pressure, increased light availability, decreased precipitation, or a combination of these factors could explain why acacias invested more in mutualism with ants. Though the long-term consequences of these climate fluctuations remain unknown, this work highlights the plasticity of coevolved mutualistic interactions in the face of global change.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"115"},"PeriodicalIF":2.3,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144512253","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

Causes and consequences of long-term defaunation in multi-species aggregations: species traits predict freshwater mussel declines and decreases in biogeochemical storage and recycling. 多物种聚集长期退化的原因和后果：物种特征预测淡水贻贝数量下降和生物地球化学储存和再循环减少。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-06-26 DOI: 10.1007/s00442-025-05755-8

Jonathan W Lopez, Carla L Atkinson, Caryn C Vaughn

{"title":"Causes and consequences of long-term defaunation in multi-species aggregations: species traits predict freshwater mussel declines and decreases in biogeochemical storage and recycling.","authors":"Jonathan W Lopez, Carla L Atkinson, Caryn C Vaughn","doi":"10.1007/s00442-025-05755-8","DOIUrl":"10.1007/s00442-025-05755-8","url":null,"abstract":"One of the foremost challenges in contemporary ecology is understanding the rapid loss of animal diversity and biomass, known as defaunation. The causes and consequences of defaunation depend on species traits that regulate which species are vulnerable to stressors and the ecosystem-level consequences of declines. We used a > 30-year long-term monitoring dataset collected from 21 sites in 4 rivers in south-eastern Oklahoma, USA, and a trait-based framework to identify defaunation in multi-species freshwater animal aggregations (freshwater mussels). We detected mussel density declines in 2 of the 4 rivers, encompassing 67% of the study sites. In the defaunated rivers, losses of mussel density led to biomass declines and losses of mussel-generated carbon and nutrient recycling and storage. Mussel aggregations only became defaunated in rivers where hydrologic data suggested drought-like conditions. There was also a regional increase in temperature, suggesting that low flows and high temperatures may have negatively impacted mussel populations in the defaunated rivers. Declines did not differ among thermal tolerance guilds-rather, declines were driven by species with life-history traits adapted for stable hydrologic conditions. Given the significant role that river ecosystems play in global biogeochemical processes, freshwater defaunation may have major consequences if continued unchecked. More broadly, trait-based approaches show clear promise for advancing the predictive capacity of animal ecology.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"111"},"PeriodicalIF":2.3,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144497571","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

Human disturbance alters the foraging and spatiotemporal activity of a large carnivore. 人为干扰改变了大型食肉动物的觅食和时空活动。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-06-26 DOI: 10.1007/s00442-025-05752-x

Gonzalo Barceló, Emiliano Donadio, Mathew W Alldredge, Jonathan N Pauli

{"title":"Human disturbance alters the foraging and spatiotemporal activity of a large carnivore.","authors":"Gonzalo Barceló, Emiliano Donadio, Mathew W Alldredge, Jonathan N Pauli","doi":"10.1007/s00442-025-05752-x","DOIUrl":"10.1007/s00442-025-05752-x","url":null,"abstract":"Carnivore recovery is often promoted to restore ecosystem functioning. However, human-disturbed landscapes can alter the behavior and role of returning carnivores. To evaluate how different dimensions of a carnivore niche are affected across a gradient of human disturbance, we studied 83 pumas (Puma concolor) at seven populations in North and South America. We hypothesized that pumas inhabiting sites with high human disturbance would modify their niche by reducing space use, becoming more nocturnal and diversifying their diets. We quantified how landscape features affected puma home ranges, movement paths, diel activity, and step selection. Using stable isotopes, we quantified individual diet and dietary specialization, and population dietary niche width. Pumas decreased their movement rate with increasing human disturbance while some evidence indicates home ranges were reduced. Unexpectedly, diel activity was unaffected by human disturbance, but pumas decreased movement more during the day in areas with high disturbance. Similarly, pumas avoided highly disturbed areas during the day, but that avoidance was low at night. Finally, individual dietary specialization decreased because of pumas reduced consumption of native ungulates with increasing disturbance, although without changes in the population niche width. Responses to human disturbance were generally consistent across sites, with pumas adjusting their temporal, spatial, and foraging axes to decrease encounters with humans. Our results suggest that human-disturbed landscapes across regions alter the primary niche axes of pumas to construct a new realized niche in human landscapes, which may have important consequences for their ecological interactions and the functional role of this large carnivore.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"112"},"PeriodicalIF":2.3,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12202680/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144507157","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

Seasonal plasticity of thermal tolerance indicates resilience to future climate in Australian damselflies. 热耐受性的季节性可塑性表明澳大利亚豆娘对未来气候的适应能力。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-06-24 DOI: 10.1007/s00442-025-05745-w

Md Tangigul Haque, Shatabdi Paul, Marie E Herberstein, Md Kawsar Khan

{"title":"Seasonal plasticity of thermal tolerance indicates resilience to future climate in Australian damselflies.","authors":"Md Tangigul Haque, Shatabdi Paul, Marie E Herberstein, Md Kawsar Khan","doi":"10.1007/s00442-025-05745-w","DOIUrl":"10.1007/s00442-025-05745-w","url":null,"abstract":"An animal's response to climate warming is predominantly governed by its thermal tolerance. Seasonal temperature variation may indicate the boundaries of plasticity in insect thermal tolerance, which could predict the capacity to adapt to future climates. Here, we assess the changes in thermal breadth (the difference between the critical thermal maximum (CTmax) and critical thermal minimum (CTmin)) to estimate the thermal safety margin in Ischnura heterosticta and Xanthagrion erythroneurum damselflies across different seasons. For both species, CTmax and CTmin increased with monthly temperature, with a stronger increase of CTmin in summer. Overall, thermal breadth was broad in spring and autumn (around 41 degrees) but in summer we observed a large number of individuals with substantially narrower thermal breadth (down to 26-35 degrees). Our results establish considerable seasonal thermal plasticity in damselflies, which might provide a degree of resilience in future climates, yet during the most critical season (summer), heat spikes might push a substantial proportion of the population beyond their limits.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"109"},"PeriodicalIF":2.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12187897/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144476205","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

Are leaf anatomical traits strong predictors of litter decomposability? Evidence from upper Andean tropical species along a forest successional gradient. 叶片解剖性状是凋落物分解能力的有力预测因子吗？安第斯山脉上部热带物种沿森林演替梯度的证据。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-06-24 DOI: 10.1007/s00442-025-05739-8

Dennis Castillo-Figueroa, Juan M Posada

{"title":"Are leaf anatomical traits strong predictors of litter decomposability? Evidence from upper Andean tropical species along a forest successional gradient.","authors":"Dennis Castillo-Figueroa, Juan M Posada","doi":"10.1007/s00442-025-05739-8","DOIUrl":"10.1007/s00442-025-05739-8","url":null,"abstract":"Litter decomposability has been linked to \"soft\" traits of green leaves, but relationships with \"hard\" traits associated with leaf anatomy remain unexplored. Examining anatomical traits within the leaf economic spectrum may enhance our understanding of litter decomposability. In this study, we analyzed the relationships between leaf anatomical traits and decomposability at both species and community levels along a successional gradient of upper Andean tropical forests in Colombia. We conducted a reciprocal translocation field experiment with 15 upper Andean species in 14 permanent plots around Bogotá, collecting 2520 litterbags at four times (3, 6, 12, 18 months). Using a multiple regression model based on foliar traits, we estimated decomposability for the remaining 48 species that compose the plant community (63 species in total) in the studied successional gradient. We measured several leaf anatomical traits in all 63 species and calculated community-weighted means and functional diversity indices with the most effective anatomical predictors of decomposability. We found that thicker cuticles, larger vascular bundles, higher spongy mesophyll proportion, and lower palisade mesophyll proportion are related to low decomposability. Plant communities with thicker protective structures slow down decay rates, while large palisade tissues with cylindrical cells increase litter breakdown. Decomposability did not change along succession due to the balance between high functional evenness in secondary forests and high functional richness in mature forests. Despite potential circularity and interdependence between functional diversity metrics, our study provides novel insights into the anatomical basis of decomposability and community dynamics in successional gradients of upper Andean tropical forests.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"110"},"PeriodicalIF":2.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12187801/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144485306","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

UV treatment of the digestive fluid of Nepenthes hemsleyana pitcher plants affects their digestive process, possibly via reducing microbial inquilines. 紫外光处理猪笼草的消化液会影响其消化过程，可能是通过减少微生物群来实现的。

IF 2.3 2区环境科学与生态学

Oecologia Pub Date : 2025-06-24 DOI: 10.1007/s00442-025-05749-6

Julien L Bota, Christel Baum, Sofie Gawronski, T Ulmar Grafe, Gerald Kerth, Michael G Schöner, Caroline R Schöner

{"title":"UV treatment of the digestive fluid of Nepenthes hemsleyana pitcher plants affects their digestive process, possibly via reducing microbial inquilines.","authors":"Julien L Bota, Christel Baum, Sofie Gawronski, T Ulmar Grafe, Gerald Kerth, Michael G Schöner, Caroline R Schöner","doi":"10.1007/s00442-025-05749-6","DOIUrl":"10.1007/s00442-025-05749-6","url":null,"abstract":"Interactions with microbes are ubiquitous, and many of them are essential for the survival and success of plants. In Nepenthes pitcher plants, they occur as part of a diverse community of organisms, so-called inquilines, that live inside the digestive fluid of the pitcher traps. However, evidence is ambiguous regarding the role of microbial inquilines: they may complement the plants' prey digestion, fix atmospheric N, act as competitors that reduce plant-available nutrients or affect the plants in other ways unrelated to the breakdown of prey. In a field experiment on Borneo, we investigated the effect of UV disinfection of the digestive fluid on prey digestion of N. hemsleyana that captures and digests insects as well as bat faeces in its pitchers. We show that in the short term, the photosynthetic performance of plants with UV-treated digestive fluids decreases compared to untreated plants, likely due to lower abundances of microbial inquilines. However, at the end of 2 months, responses of pitcher plants with UV-treated and untreated digestive fluids tend to equalise. Nutrient source, whether from insects or bat faeces, does not influence prey digestion. We expect our findings to be a starting point for unveiling the ecological role of microbial inquilines in pitcher plants and how they interact with other inquiline groups of higher trophic levels. Ultimately, this will also help to improve understanding of the functioning and evolution of convergent interactions in other carnivorous plants.","PeriodicalId":19473,"journal":{"name":"Oecologia","volume":"207 7","pages":"108"},"PeriodicalIF":2.3,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12187847/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144476206","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