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Optimization of Ecological Network in the Yellow River Basin: A Framework of Complex Network Theory 黄河流域生态网络优化:一个复杂网络理论框架
IF 1.7 4区 环境科学与生态学
Ecological Research Pub Date : 2026-07-22 DOI: 10.1111/1440-1703.70109
Xingrong Fu, Wei Wei, Xiaoxu Wei, Binbin Xie, Junju Zhou, Rongping Liang, Wei Shi
{"title":"Optimization of Ecological Network in the Yellow River Basin: A Framework of Complex Network Theory","authors":"Xingrong Fu,&nbsp;Wei Wei,&nbsp;Xiaoxu Wei,&nbsp;Binbin Xie,&nbsp;Junju Zhou,&nbsp;Rongping Liang,&nbsp;Wei Shi","doi":"10.1111/1440-1703.70109","DOIUrl":"https://doi.org/10.1111/1440-1703.70109","url":null,"abstract":"<div>\u0000 \u0000 <p>Rapid urbanization increasingly threatens the sustainable development of ecological environments. As a comprehensive landscape conservation strategy, the ecological network (EN) is fundamental for safeguarding regional ecological security and supporting high-quality socio-economic development. This study integrated ecosystem services (ESs) assessment, Morphological Spatial Pattern Analysis (MSPA), and circuit theory to analyze the spatiotemporal evolution of the EN in the Yellow River Basin (YRB) from 2005 to 2023. Complex network theory was further applied to optimize the network structure. The results show that: (1) From 2005 to 2023, the area of ecological sources increased by 1523 km<sup>2</sup>, mainly distributed in southeastern Qinghai, northwestern Sichuan, and southern Gansu, with grassland and woodland as the dominant land cover types. (2) The total length of ecological corridors increased by 37.09 km, showing an overall trend of initial decrease followed by expansion. The number of barriers and pinch points exhibited noticeable fluctuations. Pinch points were primarily located in the south-central and northern corridors, whereas barrier points were concentrated in corridors within densely populated areas of the north-central region. (3) Based on the strategy of low-betweenness first (LBF), 10 new corridors were added in 2023, which significantly enhanced the overall stability and connectivity of the EN. This study provides important guidance for optimizing the EN in the YRB, and the proposed complex network optimization framework also offers new perspectives and methodologies for ecological conservation and sustainable management in other large-scale river basins.</p>\u0000 </div>","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615692","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
Geospatial Data Layer of Semi-Natural Grasslands With Century-Old or Longer Temporal Continuity 具有百年或更长时间连续性的半自然草地地理空间数据层
IF 1.7 4区 环境科学与生态学
Ecological Research Pub Date : 2026-07-20 DOI: 10.1111/1440-1703.70108
Shogo Ikari, Mahoro Tomitaka, Yasuhiro Kubota, Tanaka Kenta
{"title":"Geospatial Data Layer of Semi-Natural Grasslands With Century-Old or Longer Temporal Continuity","authors":"Shogo Ikari,&nbsp;Mahoro Tomitaka,&nbsp;Yasuhiro Kubota,&nbsp;Tanaka Kenta","doi":"10.1111/1440-1703.70108","DOIUrl":"https://doi.org/10.1111/1440-1703.70108","url":null,"abstract":"<p>Grasslands in Japan, once covering over 10% of the national land area, have rapidly declined due to land-use change and the abandonment of traditional management, resulting in the loss of biodiversity and associated ecosystem services. Because the ecological value of grasslands is closely tied to their temporal continuity, identifying long-persisting sites is crucial for effective conservation and restoration planning. However, such assessments have so far been limited to local or regional scales due to the lack of comprehensive historical datasets. This study presents a national-scale geospatial dataset of century-old semi-natural grasslands in Japan, constructed by integrating multiple sources of historical and contemporary spatial data. We combined long-term land-use and vegetation data to trace changes in grassland distribution over more than a century, linking modern high-resolution datasets with historical land-use maps and expert knowledge of long-maintained grasslands. By assessing the overlap between historical and recent grassland distributions, we identified areas that have persisted for over 100 years and are maintained as semi-natural systems through human management. The resulting dataset comprises 2654 polygons representing semi-natural grasslands with over a century of continuity across Japan. This dataset provides the first nationwide distribution records of grasslands with long-term temporal continuity, supporting conservation prioritization, biodiversity monitoring, and landscape-scale restoration efforts. The data layer is available under a non-commercial license in GIS-compatible formats to facilitate broad research and policy applications. The metadata for this abstract is available in MetaCat in JaLTER at https://doi.org/10.20783/DIAS.JLE.99, and the complete dataset is available at https://zenodo.org/records/18131104.</p>","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1440-1703.70108","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615498","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
Functional Stability and the Limits of 16S-Based Inference in Serpentine Biocrusts 蛇形生物外壳的功能稳定性及基于16 - s推理的局限性
IF 1.7 4区 环境科学与生态学
Ecological Research Pub Date : 2026-07-19 DOI: 10.1111/1440-1703.70110
Danielle Botha, Sandra Barnard, Sarina Claassens, Stefan J. Siebert
{"title":"Functional Stability and the Limits of 16S-Based Inference in Serpentine Biocrusts","authors":"Danielle Botha,&nbsp;Sandra Barnard,&nbsp;Sarina Claassens,&nbsp;Stefan J. Siebert","doi":"10.1111/1440-1703.70110","DOIUrl":"https://doi.org/10.1111/1440-1703.70110","url":null,"abstract":"<p>Biological soil crusts (biocrusts) shape surface ecosystem processes, but how serpentinite geochemistry and moisture structure their microbial communities remains unclear. We collected biocrust samples from serpentine and nonserpentine areas under frequent and erratic moisture regimes from the Barberton Greenstone Belt, South Africa. Bacterial communities were analyzed using 16S rRNA gene sequencing and shotgun metagenomics. Coarse bacterial diversity measures (alpha diversity and phylum-level composition) did not differ significantly between soil types or moisture regimes. However, amplicon sequence variant (ASV)-level analyses combining differential abundance testing, indicator-species analysis, and Spearman's correlations (<i>ρ</i> ≥ 0.75, <i>p</i> ≤ 0.05) identified taxa linked to soil chemistry and moisture. Three hundred sixty ASVs differed between soil types (199 enriched in serpentine) and 240 differed by moisture regime within serpentine soils (220 enriched under erratic moisture). Many serpentine-associated microbes (e.g., Solirubrobacterales, <i>Blastocatella</i>, <i>Mycobacterium</i>, Chloroflexi clades) were linked to elevated nickel, cobalt, chromium, manganese, and iron, and sometimes to low-calcium environments, reflecting tolerance to metal toxicity and characteristic serpentine geochemistry. In contrast, metabolic pathways were comparatively constrained across soils and moisture. Few pathways differed significantly, and no combined effect of soil type and moisture was detected on overall functional composition. In serpentine biocrusts, the moisture regime shaped the distribution of microbial functions without altering overall pathway composition. Erratic moisture was associated with enrichment of pathways linked to stress tolerance and detoxification. Frequent moisture was associated with greater representation of fermentation-related pathways and cell-envelope biosynthesis. Benchmarking showed that PICRUSt2 recovered broad sample-level patterns but poorly captured pathway-specific quantitative variation relative to HUMAnN3.</p>","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1440-1703.70110","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148615386","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
Distribution and Seasonal Dynamics of Manganese and Associated Elements in Leaves of Manganese-Hyperaccumulating Ilex Species 锰超富集冬青种叶片中锰及其相关元素的分布及季节动态
IF 1.7 4区 环境科学与生态学
Ecological Research Pub Date : 2026-07-15 DOI: 10.1111/1440-1703.70107
Uta Kamemura, Shin-ichi Nakamura, Takafumi Mizuno
{"title":"Distribution and Seasonal Dynamics of Manganese and Associated Elements in Leaves of Manganese-Hyperaccumulating Ilex Species","authors":"Uta Kamemura,&nbsp;Shin-ichi Nakamura,&nbsp;Takafumi Mizuno","doi":"10.1111/1440-1703.70107","DOIUrl":"https://doi.org/10.1111/1440-1703.70107","url":null,"abstract":"<p>This study aimed to investigate seasonal variations in leaf concentrations of manganese (Mn), zinc (Zn), calcium (Ca), and potassium (K) in two evergreen Japanese <i>Ilex</i> species (<i>I. pedunculosa</i> and <i>I. crenata</i> var. <i>radicans</i>) and to evaluate associations among these elements using linear mixed-effects models (LMMs). In addition, leaf elemental distribution patterns were assessed using a benchtop micro–X-ray fluorescence (μ-XRF) approach. LMM analyses revealed significant positive relationships between Mn and Ca concentrations in both <i>Ilex</i> species, whereas a significant positive relationship between Mn and Zn concentrations was detected only in <i>I. crenata</i> var. <i>radicans</i>, indicating interspecific differences in elemental accumulation patterns within the genus <i>Ilex</i>. Moreover, μ-XRF analyses revealed that Mn was concentrated in interveinal regions and along leaf margins on the leaf surface. Mn was primarily distributed in the palisade mesophyll, whereas Ca was preferentially localized in the spongy mesophyll and around vascular bundles in leaf cross-sections. Both Mn and Zn were predominantly distributed in the palisade mesophyll in <i>I. crenata</i> var. <i>radicans</i>, which exhibited higher Zn concentrations; however, Zn also showed a tendency to accumulate in epidermal tissues. These results reveal that Mn hyperaccumulation in <i>Ilex</i> species occurs without a concomitant reduction in Ca concentrations and indicate that Mn, Zn, and Ca exhibit distinct spatial distribution patterns within leaves. This study provides new insights into the diversity of Mn hyperaccumulation mechanisms in <i>Ilex</i> trees.</p>","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1440-1703.70107","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148467463","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
Disturbance-Driven Shifts in Soil Microarthropod Communities on Serpentine Outcrops in San Luis Obispo, CA, USA 美国加利福尼亚州圣路易斯奥比斯波蛇形露头上土壤微节肢动物群落的扰动驱动变化
IF 1.7 4区 环境科学与生态学
Ecological Research Pub Date : 2026-07-14 DOI: 10.1111/1440-1703.70104
Avery Humber, Yamina Pressler, Nishanta Rajakaruna
{"title":"Disturbance-Driven Shifts in Soil Microarthropod Communities on Serpentine Outcrops in San Luis Obispo, CA, USA","authors":"Avery Humber,&nbsp;Yamina Pressler,&nbsp;Nishanta Rajakaruna","doi":"10.1111/1440-1703.70104","DOIUrl":"https://doi.org/10.1111/1440-1703.70104","url":null,"abstract":"<div>\u0000 \u0000 <p>While the ecological significance of ultramafic environments for plant diversity and endemism is well established, soil microarthropod communities within these systems remain poorly understood. In this study, we examined microarthropod abundance and community composition in adjacent, disturbed, and undisturbed ultramafic sites to assess the long-term impacts of historical chromite mining on soil fauna. Soil samples were collected to a depth of 10 cm under a common shrub <i>Ceanothus cuneatus</i> at undisturbed (<i>n</i> = 12) and disturbed (<i>n</i> = 12) sites. Microarthropods were extracted using the Tullgren/Berlese funnel method and imaged to quantify abundance and taxonomic diversity. Soil physicochemical properties, including texture, pH, electrical conductivity, exchangeable cations, macro and micronutrients, and extractable metals, were also measured on composite samples. We recorded 2592 microarthropods representing 15 arthropod orders. Order-level richness did not differ between disturbed and undisturbed sites; however, community composition differed significantly, with Collembola and Acari showing pronounced loss of abundance following mining disturbance. Our results indicate that historical chromite mining has reduced soil microarthropod abundance and diversity in disturbed serpentine ecosystems.</p>\u0000 </div>","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148467389","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
Elemental Characteristics of Tree Leaves in Forests on Ultramafic Soils in Hokkaido, Japan 日本北海道超碱性土壤中森林树叶的元素特征
IF 1.7 4区 环境科学与生态学
Ecological Research Pub Date : 2026-07-10 DOI: 10.1111/1440-1703.70105
Kanta Onodera, Tomoko Hatanaka, Satoru Hobara
{"title":"Elemental Characteristics of Tree Leaves in Forests on Ultramafic Soils in Hokkaido, Japan","authors":"Kanta Onodera,&nbsp;Tomoko Hatanaka,&nbsp;Satoru Hobara","doi":"10.1111/1440-1703.70105","DOIUrl":"https://doi.org/10.1111/1440-1703.70105","url":null,"abstract":"<div>\u0000 \u0000 <p>Ultramafic soils, often referred to as serpentine soils in ecological studies, impose strong chemical constraints on plant growth, particularly because of their low Ca/Mg ratios. Although forests can develop on ultramafic substrates, it remains unclear how these conditions are reflected in common woody species within forest ecosystems. This study examined multiple ultramafic and non-ultramafic forests in the cool-temperate region of Hokkaido, Japan, focusing on common canopy-forming deciduous broadleaf trees occurring on different bedrock types. Foliar Ca and Mg concentrations were analyzed in relation to soil chemical properties. Leaves from ultramafic sites consistently exhibited lower Ca/Mg ratios than those from non-ultramafic sites. This pattern was evident not only in pooled analyses but also in comparisons among sites and within widespread species such as <i>Quercus crispula</i> and <i>Acer pictum</i>, indicating that ultramafic-soil-derived low-Ca/high-Mg signatures are reflected in common woody species as well as in the specialized flora of ultramafic soils. At the same time, foliar and soil Ca/Mg ratios were not related in a simple one-to-one manner, suggesting that leaf chemistry does not directly mirror soil chemistry. In <i>Q. crispula</i>, presenescent leaves and leaf litter tended to exhibit higher Ca/Mg ratios than fresh leaves at both ultramafic and non-ultramafic sites. These results suggest that ultramafic-soil-derived chemical signatures persist under forested conditions, although their expression may be modified by soil–plant interactions within forest ecosystems.</p>\u0000 </div>","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148466743","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
Egg and Chick Size in the Nests of Common Gulls in Lake Chany, West Siberia, Russia From 1993 to 2011 1993年至2011年俄罗斯西伯利亚西部察尼湖普通海鸥巢中蛋和雏的大小
IF 1.7 4区 环境科学与生态学
Ecological Research Pub Date : 2026-07-10 DOI: 10.1111/1440-1703.70106
Alexander K. Yurlov, Natalia I. Yurlova, Maria Yu Garyushkina, Marina A. Selivanova, Hideyuki Doi
{"title":"Egg and Chick Size in the Nests of Common Gulls in Lake Chany, West Siberia, Russia From 1993 to 2011","authors":"Alexander K. Yurlov,&nbsp;Natalia I. Yurlova,&nbsp;Maria Yu Garyushkina,&nbsp;Marina A. Selivanova,&nbsp;Hideyuki Doi","doi":"10.1111/1440-1703.70106","DOIUrl":"https://doi.org/10.1111/1440-1703.70106","url":null,"abstract":"<div>\u0000 \u0000 <p>A long-term study of the breeding ecology of different gull species has been conducted in the area of Lake Chany. Lake Chany is located in the Baraba forest-steppe of the West Siberian Plain, Russia, between the Ob and Irtysh rivers. The lake is protected by the Ramsar Convention on Wetlands of International Importance, indicating that it is an important site for migrating and breeding birds, including the Russian common gull (<i>Larus canus heinei</i>). We observed the colony of common gulls during the breeding season from May to July, 1993 to 2011, and searched a total of 4188 nests. We recorded clutch size and eggshell coloration, and measured egg length and width. Moreover, we recorded the fate and hatching date of individual eggs and determined the clutch initiation date. Head, bill, tarsus length, and body weight of newly hatched chicks were measured. A total of 8289 eggs and 3865 chicks were measured. The presented data can be used for comparison with other local results to assess how environmental changes caused by human activity, including global warming, affect the reproduction of migratory birds. This is a novel long-term dataset on a population of this species in central Eurasia. The Metadata for this abstract is available in MetaCat in JaLTER at https://doi.org/10.20783/DIAS.JLE.98, and the complete dataset is available at https://zenodo.org/records/12038421.</p>\u0000 </div>","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148466744","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
Longitudinal Variation in Dispersal Phenotypes of the Fat Minnow (Rhynchocypris oxycephala jouyi) in a Small Stream in Western Shikoku, Japan 日本四国西部一条小溪中脂肪鲦鱼散布表型的纵向变异
IF 1.7 4区 环境科学与生态学
Ecological Research Pub Date : 2026-07-07 DOI: 10.1111/1440-1703.70102
Hiroyuki Yamada
{"title":"Longitudinal Variation in Dispersal Phenotypes of the Fat Minnow (Rhynchocypris oxycephala jouyi) in a Small Stream in Western Shikoku, Japan","authors":"Hiroyuki Yamada","doi":"10.1111/1440-1703.70102","DOIUrl":"https://doi.org/10.1111/1440-1703.70102","url":null,"abstract":"<div>\u0000 \u0000 <p>Organismal dispersal is often associated with specific phenotypes. Phenotype-dependent dispersal can generate a selective force that nonrandomly removes certain phenotypes from source populations or introduces them into destination populations. The selective forces arising from differential dispersal are termed “spatial sorting.” Although spatial sorting has emerged from studies of invasive species, recent research has shown that it can also occur in noninvasive stream organisms. Spatial sorting driven by downstream dispersal could produce phenotypes in upstream habitats that either avoid or compensate for downstream dispersal, thereby potentially generating a phenotypic gradient along streams. Although longitudinal variation in dispersal phenotypes has been reported in several stream organisms, it has rarely been examined from both morphological and behavioral perspectives at a small spatial scale. This study examined longitudinal variation in dispersal-related morphology and behavior in the fat minnow (<i>Rhynchocypris oxycephala jouyi</i>) inhabiting a small stream in western Shikoku, Japan. Morphological analyses along the stream revealed a phenotypic gradient, with upstream populations exhibiting thinner caudal peduncles and longer dorsal and ventral caudal fin lobes. The morphological characteristics observed in upstream populations, except for the long dorsal caudal fin lobes, appear to help individuals avoid or compensate for downstream dispersal. Behavioral comparisons under experimental conditions showed that juveniles collected from the uppermost station and its neighboring area exhibited more frequent ascending behavior than those from downstream stations. Together, these results support the hypothesis that spatial sorting generates distinct dispersal phenotypes in upstream habitats, contributing to directional phenotypic variation along a small stream.</p>\u0000 </div>","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148466689","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
Local Adaptation and Edaphic Divergence Across Ultramafic and Non-Ultramafic Soils: Insights From Artificially Controlled Experiments and Elemental Profiles 超基性和非超基性土壤的局部适应和土壤分化:来自人工控制实验和元素剖面的见解
IF 1.7 4区 环境科学与生态学
Ecological Research Pub Date : 2026-07-01 DOI: 10.1111/1440-1703.70097
Kiyoto Takazoe, Jun Yamashita, Jiaxin Yu, Hiroaki Setoguchi
{"title":"Local Adaptation and Edaphic Divergence Across Ultramafic and Non-Ultramafic Soils: Insights From Artificially Controlled Experiments and Elemental Profiles","authors":"Kiyoto Takazoe,&nbsp;Jun Yamashita,&nbsp;Jiaxin Yu,&nbsp;Hiroaki Setoguchi","doi":"10.1111/1440-1703.70097","DOIUrl":"https://doi.org/10.1111/1440-1703.70097","url":null,"abstract":"<p>Ecological speciation is a continuous process driven by divergent selection. In the early phases of speciation, local adaptation plays a significant role in enabling organisms to colonize new environments. Ultramafic environments impose strong edaphic stress on plants and lead to local adaptation and ecotype emergence. <i>Solidago virgaurea</i> harbors distinct ecotypes occurring on adjacent ultramafic and non-ultramafic soils. Previous studies have employed reciprocal transplant experiments in nature to evaluate local adaptation driven by multiple environmental factors. However, the extent to which soil conditions alone contribute to ecological divergence remains unclear. Additionally, our understanding of ecotypic variation in tolerance under harsh soil conditions remains insufficient. In this study, we conducted reciprocal transplant experiments in a controlled growth chamber to isolate the effects of contrasting soil environments on plant performance. Our results showed that some ecotypic traits exhibited higher performance in their native habitat than in the alternative soil; however, the signals of local adaptation observed in field experiments were not fully reproduced. Comparative analyses of soil and plant ionomic profiles revealed ecotypic differences in functional traits related to major nutrient elements, whereas little divergence was detected in heavy-metal profiles. These findings indicate that soil factors alone do not necessarily account for local adaptation. Nonetheless, soil chemical profiles, especially those of major nutrient elements, may play a key role in the differentiation of functional ecotypic traits. Further investigation is expected to reveal the genetic mechanisms underlying these physiological functions, and greater emphasis should be placed on environmental factors other than soil as well.</p>","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/1440-1703.70097","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148386200","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
Golden Jackal (Canis aureus) Population Dynamics and Habitat Preferences Across Five Decades 金豺(Canis aureus) 50年来的种群动态和栖息地偏好
IF 1.7 4区 环境科学与生态学
Ecological Research Pub Date : 2026-06-30 DOI: 10.1111/1440-1703.70098
Ezra Hadad, Jakub Z. Kosicki, Reuven Yosef
{"title":"Golden Jackal (Canis aureus) Population Dynamics and Habitat Preferences Across Five Decades","authors":"Ezra Hadad,&nbsp;Jakub Z. Kosicki,&nbsp;Reuven Yosef","doi":"10.1111/1440-1703.70098","DOIUrl":"https://doi.org/10.1111/1440-1703.70098","url":null,"abstract":"<div>\u0000 \u0000 <p>In some human-altered landscapes, mesopredators such as the golden jackal (<i>Canis aureus</i>) can increase in abundance and expand their distribution where apex predators are absent or declining, although this pattern is species—and context-dependent rather than universal. In the Middle East, historical predator-control campaigns and ongoing anthropogenic pressures may have facilitated similar processes. However, comprehensive, long-term studies on how these factors impact jackal populations and their habitat preferences are scarce. This is a significant gap, given that understanding spatiotemporal population trends is crucial for predicting future dynamics and guiding wildlife management in increasingly fragmented ecosystems. Our study analyzes golden jackal population dynamics in Israel over a 51-year period, using a dual analytical framework that combines nonparametric and model-based approaches. We first model long-term changes in abundance, and we also assess habitat preferences using ensemble Species Distribution Models (SDMs). Our findings bring to light a statistically significant long-term increase in jackal abundance, with central and northern Israel experiencing the most significant increases. The SDMs have identified farmland, grassland, shrub cover, and proximity to water as key predictors of jackal presence, while urbanized and desert regions were found to be less suitable. These findings support the view that the golden jackal is ecologically flexible and able to persist in human-modified landscapes, particularly agricultural mosaics and peri-urban areas. These patterns argue for standardized long-term monitoring to reduce conflict while accommodating conservation in human-dominated landscapes.</p>\u0000 </div>","PeriodicalId":11434,"journal":{"name":"Ecological Research","volume":"41 4","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148386955","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
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