Ecological Research最新文献_第7页

Influence of Root-Applied Glutathione on Nickel Uptake and Distribution in Brassica Roots 根施谷胱甘肽对芸苔根镍吸收和分布的影响

IF 1.4 4区环境科学与生态学

Ecological Research Pub Date : 2026-05-21 DOI: 10.1111/1440-1703.70075

Mayu Tashiro, Yutaro Hirahara, Momoko Nonoyama, Yuji Nakai, Ryohei Yamagata, Yasuyuki Ishii, Takahiro Satoh, Yusaku Noda, Yuta Miyoshi, Kazuyuki Enomoto, Yong-Gen Yin, Nobuo Suzui, Naoki Kawachi, Akihisa Shinozawa, Kanna Sato-Izawa, Shin-ichi Nakamura

{"title":"Influence of Root-Applied Glutathione on Nickel Uptake and Distribution in Brassica Roots","authors":"Mayu Tashiro, Yutaro Hirahara, Momoko Nonoyama, Yuji Nakai, Ryohei Yamagata, Yasuyuki Ishii, Takahiro Satoh, Yusaku Noda, Yuta Miyoshi, Kazuyuki Enomoto, Yong-Gen Yin, Nobuo Suzui, Naoki Kawachi, Akihisa Shinozawa, Kanna Sato-Izawa, Shin-ichi Nakamura","doi":"10.1111/1440-1703.70075","DOIUrl":"https://doi.org/10.1111/1440-1703.70075","url":null,"abstract":"Glutathione (GSH) is a biologically active tripeptide composed of glutamate, cysteine, and glycine. To elucidate early plant responses to nickel (Ni), an essential but potentially toxic micronutrient, we investigated how locally applied GSH to the roots influences Ni movement in hydroponically grown Brassica napus plants. Although plants require trace amounts of Ni, a slight increase in soil Ni can induce toxicity and impair plant growth. Therefore, understanding the molecular mechanisms underlying Ni tolerance in plants is crucial for improving crop productivity. Plants were exposed to treatments for 2 days to capture early responses. Exogenous GSH application to the roots suppressed Ni uptake and shoot translocation. Micro-PIXE analysis was used to visualize the Ni distribution within the roots and showed distinct radial transport patterns between the root tips and upper regions. GSH treatment reduced Ni accumulation near the stele, suggesting that GSH inhibited the radial transport of Ni toward the central vascular tissues. Transcriptome analysis showed that genes associated with lignin biosynthesis were upregulated by Ni treatment alone, whereas some of these genes were downregulated by Ni + GSH treatment. Plants may modulate the root cell wall structure to regulate Ni mobility, and GSH influences this process at the molecular level. Elucidating the GSH-dependent mechanisms controlling Ni transport can contribute to developing cultivation strategies to enhance plant Ni tolerance.","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 3","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1440-1703.70075","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148024080","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

IF 1.4 4区环境科学与生态学

Ecological Research Pub Date : 2026-05-18

引用次数: 0

Trends Toward Earlier Breeding Related to Temperature in Early Spring-Breeding Brown Frogs Revealed by Community Science Monitoring in Japan 早春温度对早春繁殖趋势的影响——日本社区科学监测揭示的褐蛙繁殖趋势

IF 1.4 4区环境科学与生态学

Ecological Research Pub Date : 2026-05-18 DOI: 10.1111/1440-1703.70080

Noe Matsushima, Taku Fujita, Kiyomi Yasumiba

{"title":"Trends Toward Earlier Breeding Related to Temperature in Early Spring-Breeding Brown Frogs Revealed by Community Science Monitoring in Japan","authors":"Noe Matsushima, Taku Fujita, Kiyomi Yasumiba","doi":"10.1111/1440-1703.70080","DOIUrl":"https://doi.org/10.1111/1440-1703.70080","url":null,"abstract":"<div>\u0000 \u0000 Amphibians are particularly susceptible to climate change, and phenological shifts such as earlier breeding have been reported for numerous species worldwide. However, studies investigating climate change effects on amphibians in Japan remain limited. We analyzed shifts in breeding phenology for three early-spring breeding frog species in Japan, Rana japonica, Rana ornativentris, and Rana pirica. We focused on long-term changes in the timing of phenological events using two indicators, the first and peak oviposition dates. Using long-term monitoring data collected by community scientists (citizen scientists), we applied generalized additive models and generalized linear mixed models to assess annual trends, incorporating population size, survey frequency as a proxy of sampling bias, and latitude as explanatory variables. All three species showed a trend toward earlier breeding. In R. japonica and R. ornativentris, larger populations tended to breed earlier, whereas survey frequency had no significant effect. Climatic factors influencing the two phenological indicators differed among species. For R. japonica and R. ornativentris, winter mean temperature and snow depth were significant predictors, whereas for R. pirica, different climatic variables were associated with each indicator. Furthermore, no clear relationship was found between latitude and breeding temperature (especially for first oviposition dates) in R. japonica and R. ornativentris, suggesting limited geographical variation in the climatic drivers of reproduction. These findings indicate that rising temperatures advance reproductive phenology in these frogs and that population size also plays a significant role, and long-term community science data are valuable for assessing amphibian responses to climate change.\u0000 </div>","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 3","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148023147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Trends Toward Earlier Breeding Related to Temperature in Early Spring-Breeding Brown Frogs Revealed by Community Science Monitoring in Japan 早春温度对早春繁殖趋势的影响——日本社区科学监测揭示的褐蛙繁殖趋势

IF 1.4 4区环境科学与生态学

Ecological Research Pub Date : 2026-05-18 DOI: 10.1111/1440-1703.70080

Noe Matsushima, Taku Fujita, Kiyomi Yasumiba

{"title":"Trends Toward Earlier Breeding Related to Temperature in Early Spring-Breeding Brown Frogs Revealed by Community Science Monitoring in Japan","authors":"Noe Matsushima, Taku Fujita, Kiyomi Yasumiba","doi":"10.1111/1440-1703.70080","DOIUrl":"https://doi.org/10.1111/1440-1703.70080","url":null,"abstract":"<div>\u0000 \u0000 Amphibians are particularly susceptible to climate change, and phenological shifts such as earlier breeding have been reported for numerous species worldwide. However, studies investigating climate change effects on amphibians in Japan remain limited. We analyzed shifts in breeding phenology for three early-spring breeding frog species in Japan, Rana japonica, Rana ornativentris, and Rana pirica. We focused on long-term changes in the timing of phenological events using two indicators, the first and peak oviposition dates. Using long-term monitoring data collected by community scientists (citizen scientists), we applied generalized additive models and generalized linear mixed models to assess annual trends, incorporating population size, survey frequency as a proxy of sampling bias, and latitude as explanatory variables. All three species showed a trend toward earlier breeding. In R. japonica and R. ornativentris, larger populations tended to breed earlier, whereas survey frequency had no significant effect. Climatic factors influencing the two phenological indicators differed among species. For R. japonica and R. ornativentris, winter mean temperature and snow depth were significant predictors, whereas for R. pirica, different climatic variables were associated with each indicator. Furthermore, no clear relationship was found between latitude and breeding temperature (especially for first oviposition dates) in R. japonica and R. ornativentris, suggesting limited geographical variation in the climatic drivers of reproduction. These findings indicate that rising temperatures advance reproductive phenology in these frogs and that population size also plays a significant role, and long-term community science data are valuable for assessing amphibian responses to climate change.\u0000 </div>","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 3","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-05-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148023151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Beyond Accuracy: Ecological Validity of Machine Learning Models for Assessing Vegetation Conservation Classes in South Korea 超越准确性：评估韩国植被保护课程的机器学习模型的生态有效性

IF 1.4 4区环境科学与生态学

Ecological Research Pub Date : 2026-05-12 DOI: 10.1111/1440-1703.70079

Minkyu Park

{"title":"Beyond Accuracy: Ecological Validity of Machine Learning Models for Assessing Vegetation Conservation Classes in South Korea","authors":"Minkyu Park","doi":"10.1111/1440-1703.70079","DOIUrl":"https://doi.org/10.1111/1440-1703.70079","url":null,"abstract":"<div>\u0000 \u0000 The assessment of vegetation conservation class (VCC) has traditionally relied on field surveys, which are often limited by observer subjectivity and spatiotemporal inefficiencies. To address these challenges, this study proposes a machine learning approach utilizing 5779 vegetation relevés collected from the National Natural Environment Survey in South Korea. We developed a random forest model trained to predict VCC, specifically focusing on phytosociological structural variables such as physiognomic dominant species and vertical stratification richness. The model achieved an overall accuracy of 80.4% on an independent test set, demonstrating a substantial level of agreement with expert evaluations. Notably, it successfully identified the rare, high-conservation value Class I forests despite class imbalance. Variable importance analysis revealed that structural features and indicator species associated with successional stages played decisive roles in classification, confirming that the model secured not only statistical accuracy but also ecological validity. These findings suggest that objective machine learning tools can effectively complement subjective conventional surveys, thereby significantly enhancing the efficiency and responsiveness of national-scale ecosystem monitoring.\u0000 </div>","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 3","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148022690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Beyond Accuracy: Ecological Validity of Machine Learning Models for Assessing Vegetation Conservation Classes in South Korea 超越准确性：评估韩国植被保护课程的机器学习模型的生态有效性

IF 1.4 4区环境科学与生态学

Ecological Research Pub Date : 2026-05-12 DOI: 10.1111/1440-1703.70079

Minkyu Park

{"title":"Beyond Accuracy: Ecological Validity of Machine Learning Models for Assessing Vegetation Conservation Classes in South Korea","authors":"Minkyu Park","doi":"10.1111/1440-1703.70079","DOIUrl":"https://doi.org/10.1111/1440-1703.70079","url":null,"abstract":"<div>\u0000 \u0000 The assessment of vegetation conservation class (VCC) has traditionally relied on field surveys, which are often limited by observer subjectivity and spatiotemporal inefficiencies. To address these challenges, this study proposes a machine learning approach utilizing 5779 vegetation relevés collected from the National Natural Environment Survey in South Korea. We developed a random forest model trained to predict VCC, specifically focusing on phytosociological structural variables such as physiognomic dominant species and vertical stratification richness. The model achieved an overall accuracy of 80.4% on an independent test set, demonstrating a substantial level of agreement with expert evaluations. Notably, it successfully identified the rare, high-conservation value Class I forests despite class imbalance. Variable importance analysis revealed that structural features and indicator species associated with successional stages played decisive roles in classification, confirming that the model secured not only statistical accuracy but also ecological validity. These findings suggest that objective machine learning tools can effectively complement subjective conventional surveys, thereby significantly enhancing the efficiency and responsiveness of national-scale ecosystem monitoring.\u0000 </div>","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 3","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148022691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

IF 1.4 4区环境科学与生态学

Ecological Research Pub Date : 2026-05-12

引用次数: 0

Nest Predation in the Canarian Houbara Bustard (Chlamydotis undulata fuertaventurae): An Experimental Study Using Artificial Nests 加那利胡原鸨（Chlamydotis波动衣原体fuertaventurae）的巢捕食：人工巢的实验研究

IF 1.4 4区环境科学与生态学

Ecological Research Pub Date : 2026-05-10 DOI: 10.1111/1440-1703.70077

Alberto Ucero, Juan Carlos Alonso, Inmaculada Abril-Colón

{"title":"Nest Predation in the Canarian Houbara Bustard (Chlamydotis undulata fuertaventurae): An Experimental Study Using Artificial Nests","authors":"Alberto Ucero, Juan Carlos Alonso, Inmaculada Abril-Colón","doi":"10.1111/1440-1703.70077","DOIUrl":"https://doi.org/10.1111/1440-1703.70077","url":null,"abstract":"Nest predation is fundamental to bird population dynamics. We used GLM analysis to investigate the microhabitat and landscape variables associated with the predation of 229 artificial nests within the range of the Canarian houbara bustard (Chlamydotis undulata fuertaventurae), an endangered subspecies endemic to the Canary Islands. Fifty-seven percent of the nests were predated, with the Canarian raven (Corvus corax canariensis) being the predator in 22 of the 23 predation events captured by 52 camera traps; in the remaining case, the predator was a dog. After model averaging, four variables were significant. Density of ravens contributed to higher predation rates, and vegetation cover and stone cover contributed to lower predation rates, probably due to the greater difficulty of predators to locate them, as they were better camouflaged. Nests located in areas with higher road density experienced less predation, possibly because these areas hold fewer predators and prey due to vehicle traffic. The identification of the raven as the main predator, together with its population increase in the eastern Canary Islands in recent decades, highlights the need to reduce human-derived food resources—particularly those provided by feeding stations for Egyptian vultures—which are probably contributing to its expansion within the Canarian houbara's habitat. Free-roaming and feral dogs and cats also pose a threat to houbara nests and chicks, warranting control measures. Additionally, we recommend preserving vegetation cover and stony areas while avoiding the construction of new roads in houbara breeding habitats.","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 3","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1440-1703.70077","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148022924","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

IF 1.4 4区环境科学与生态学

Ecological Research Pub Date : 2026-05-10

引用次数: 0

Nest Predation in the Canarian Houbara Bustard (Chlamydotis undulata fuertaventurae): An Experimental Study Using Artificial Nests 加那利胡原鸨（Chlamydotis波动衣原体fuertaventurae）的巢捕食：人工巢的实验研究

IF 1.4 4区环境科学与生态学

Ecological Research Pub Date : 2026-05-10 DOI: 10.1111/1440-1703.70077

Alberto Ucero, Juan Carlos Alonso, Inmaculada Abril-Colón

{"title":"Nest Predation in the Canarian Houbara Bustard (Chlamydotis undulata fuertaventurae): An Experimental Study Using Artificial Nests","authors":"Alberto Ucero, Juan Carlos Alonso, Inmaculada Abril-Colón","doi":"10.1111/1440-1703.70077","DOIUrl":"https://doi.org/10.1111/1440-1703.70077","url":null,"abstract":"Nest predation is fundamental to bird population dynamics. We used GLM analysis to investigate the microhabitat and landscape variables associated with the predation of 229 artificial nests within the range of the Canarian houbara bustard (Chlamydotis undulata fuertaventurae), an endangered subspecies endemic to the Canary Islands. Fifty-seven percent of the nests were predated, with the Canarian raven (Corvus corax canariensis) being the predator in 22 of the 23 predation events captured by 52 camera traps; in the remaining case, the predator was a dog. After model averaging, four variables were significant. Density of ravens contributed to higher predation rates, and vegetation cover and stone cover contributed to lower predation rates, probably due to the greater difficulty of predators to locate them, as they were better camouflaged. Nests located in areas with higher road density experienced less predation, possibly because these areas hold fewer predators and prey due to vehicle traffic. The identification of the raven as the main predator, together with its population increase in the eastern Canary Islands in recent decades, highlights the need to reduce human-derived food resources—particularly those provided by feeding stations for Egyptian vultures—which are probably contributing to its expansion within the Canarian houbara's habitat. Free-roaming and feral dogs and cats also pose a threat to houbara nests and chicks, warranting control measures. Additionally, we recommend preserving vegetation cover and stony areas while avoiding the construction of new roads in houbara breeding habitats.","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 3","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1440-1703.70077","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148022732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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