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{"title":"Intertidal zonation of mangrove organic carbon fractions driven by vegetation biomass and soil nutrient levels","authors":"Xiaolei Yin ,&nbsp;Weiqi Wang ,&nbsp;Yuanchun Zou ,&nbsp;Zhaoliang Song ,&nbsp;Jordi Sardans ,&nbsp;Martin Wiesmeier ,&nbsp;Georg Guggenberger ,&nbsp;Qiang Li ,&nbsp;Ji Chen ,&nbsp;Josep Peñuelas","doi":"10.1016/j.catena.2025.108722","DOIUrl":"10.1016/j.catena.2025.108722","url":null,"abstract":"<div><div>High net primary production and low soil organic carbon (SOC) decomposition rates ensure that mangroves are important carbon sink likely to be disturbed by rising sea level. The differences in environmental factors along land-sea gradients in mangrove forests influence SOC characteristics.<!--> <!-->Six typical intertidal zones of mangrove distribution in the subtropical and tropical regions of China were selected for this study. Each intertidal zone was divided into three sections, ranging from land to sea: the landward zone (LW), the middle zone (MZ), and the seaward zone (SW). This classification aimed to investigate the distribution of key driving factors influencing mangrove wetland SOC and its various fractions SOC and its different fractions.<!--> <!-->The average SOC content ranged between 15.85 and 37.08 g kg⁻¹, and was 31 % and 57 % lower in MZ and SW than LW, respectively.<!--> <!-->Compared with LW, easily oxidizable-carbon (EOC) content in MZ and SW was 16 % and 58 % lower, and dissolved organic-carbon (DOC) content was 46 % and 67 % lower, respectively.<!--> <!-->Location affected the characteristics of the distribution of SOC fractions (p &lt; 0.05).<!--> <!-->Vegetation biomass and total N and P contents were key driving factors affecting SOC content.<!--> <!-->Mangrove forest age was another important factor affecting SOC. LW environment had the largest total N and P content, leading to larger SOC, EOC and microbial biomass carbon content compared to MZ and SW. We highlight the environmental gradient divergence in the SOC in the intertidal zone found when systematically assessing the SOC pool function of the coastal zone, which warrants<!--> <!-->research into the SOC cycle in coastal wetlands. Rising sea levels may cover more current tidal mangrove areas and, if there is no space to move inland, current mangrove formations in more tidal areas could disappear. As a result, the C-stored in these mangrove communities could be eroded, sparced and lost.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"250 ","pages":"Article 108722"},"PeriodicalIF":5.4,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Increasing the pH of tropical peat can enhance methane production and methanogenic growth under anoxic conditions","authors":"Kitso Kusin ,&nbsp;Kaho Ogawa ,&nbsp;Hideyuki Doi ,&nbsp;Takeshi Tokida ,&nbsp;Takashi Hirano ,&nbsp;Adi Jaya ,&nbsp;Masayuki Itoh","doi":"10.1016/j.catena.2025.108791","DOIUrl":"10.1016/j.catena.2025.108791","url":null,"abstract":"<div><div>Methane (CH₄), the second-most-potent greenhouse gas, is produced by methanogens under anaerobic conditions. Tropical peat swamp forests, which are widely distributed in Southeast Asia, have recently been subjected to large-scale deforestation and conversion to agricultural land. The pH of low-pH (acidic) tropical peat soils on agricultural lands is generally controlled to promote plant growth. Unintended waterlogged conditions in agricultural lands during the wet season can create an anaerobic environment in which methanogens are active. In this study, surface peat soil collected from a tropical peat swamp forest in Central Kalimantan, Indonesia, was examined to clarify the effect of increasing pH on CH₄ production. Soil samples were prepared at varying pH (3.4, 4.7, 6.6, and 7.7) by adding calcium hydroxide and incubated under anoxic conditions. Soil remained under dark and cool conditions for years before incubation. CH₄ production increased with incubation time at all pH levels. Overall, soils at higher pH showed significantly greater CH₄ production compared with peat at pH 3.4 (control) at most measurement points during a 76-day incubation. Analysis of the phylogenetic composition of archaeal and bacterial communities in peat after a 76-day incubation showed that the relative abundance of Euryarchaeota (Methanobacteria + Methanomicrobia), organisms that produce CH₄, increased from pH 3.4 (∼0%) to pH 4.7 (5.3 %), pH 6.6 (8.7 %), and pH 7.7 (8.7 %). This suggests that increasing the pH of tropical peat enhances CH₄ production by increasing the proportion of methanogens. It should also be noted that the anaerobic microbe populations in tropical peat can survive and recover after long-term cold storage.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"250 ","pages":"Article 108791"},"PeriodicalIF":5.4,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157282","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seasonal variations in the soil microbiota of a temperate wetland in Northeast China in response to nitrogen deposition","authors":"Rong-Tao Zhang ,&nbsp;Shen-Zheng Wang ,&nbsp;Hai-Xiu Zhong ,&nbsp;Xin Sui ,&nbsp;Ying-Nan Liu","doi":"10.1016/j.catena.2025.108794","DOIUrl":"10.1016/j.catena.2025.108794","url":null,"abstract":"<div><h3>Purpose</h3><div>China has recently witnessed a significant rise in nitrogen (N) deposition associated with human activities, especially in temperate regions. Although much research has been conducted on aboveground biodiversity, the effects of long-term N deposition on the composition, function and variety of the soil microbiota (especially across seasons) have received less attention.</div></div><div><h3>Methods</h3><div>We investigated the effects of varying levels of nitrogen deposition on the composition, function and diversity of soil microbiota (bacteria and fungi) in temperate natural wetlands in summer and winter using Illumina sequencing. N deposition are categorized into low N addition (LN: 40 kg N/ha yr⁻¹) and high N addition (HN: 80 kg N/ha yr⁻¹).</div></div><div><h3>Results</h3><div>In both summer and winter, N deposition had a significant effect on bacterial α diversity. In contrast, fungal α diversity exhibited no significant change in either of the two seasons. Additionally, the diversity of the soil microbiota exhibited higher sensitivity to N deposition in winter compared to summer. During the summer months, nitrogen deposition significantly altered the relative abundance of bacterial phyla such as Acidobacteria, Myxococcota, Verrucomicrobia and Actinobacteria. In winter, bacterial phyla in the surface soil exhibited distinct changes in their relative abundance. Relative abundance of Epsilonbacteraeota was highest in plots without added nitrogen, whereas the N-treated plots exhibited the lowest abundances. In addition, the relative abundance of Ascomycota was significantly increased by the addition of N, whereas Mortierellomycota exhibited a significant decrease, with Basidiomycota exhibiting no significant effect. The results from the structural equation model (SEM) revealed that soil organic carbon (SOC) and total nitrogen (TN) exerted a significant influence on the composition of both bacterial and fungal communities in the soil, regardless of the season. Specifically, in the summer season, SOC and TN account for 87 % of the variation observed in bacterial diversity and 83 % of the variation in fungal diversity. Likewise, during the winter season, these factors explain 91 % of the changes in bacterial diversity and 88 % of the changes in fungal diversity.</div></div><div><h3>Conclusion</h3><div>Our research findings have unveiled that bacterial communities display a heightened sensitivity to nitrogen (N) deposition compared to their fungal counterparts. This discovery emphasizes the crucial need to concurrently evaluate the responses of the soil microbiome to global changes across various seasons, highlighting the intricate interplay between microbial dynamics and environmental factors.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"250 ","pages":"Article 108794"},"PeriodicalIF":5.4,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143157285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Linking extracellular enzyme activities in soil aggregates to carbon stabilization along an elevational gradient in alpine forest and grassland ecosystems","authors":"Adugna Feyissa ,&nbsp;Syed Turab Raza ,&nbsp;Nuria Gomez-Casanovas ,&nbsp;Arbindra Timilsina ,&nbsp;Xiaoli Cheng","doi":"10.1016/j.catena.2025.108702","DOIUrl":"10.1016/j.catena.2025.108702","url":null,"abstract":"<div><div>Soil extracellular enzymes play a crucial role in the cycling of carbon (C), nitrogen (N), and phosphorus (P) in alpine ecosystems, and they are sensitive to variations in plant inputs, climate, soil, and microbial properties occurring across short elevation gradients. However, the dynamics of soil enzyme activities in alpine ecosystems and their relationship to soil C stabilization remain uncertain. Here, we investigated the regulating factors driving the activities of hydrolyzing enzymes responsible for C (β-1,4-glucosidase, α-1,4-glucosidase, β-_D-1,4 cellobiohydrolase, and β-1,4-xylosidase), N (β-1,4-acetylglucosaminidase and _L-leucine aminopeptidase), and P (acid phosphatase) cycling, as well as the ¹³C natural abundance (δ¹³C) of soil aggregates at two depths (0–10 cm and 10–20 cm) within alpine forest and grassland soils along an elevational gradient in the Yulong Mountains of Southwest China. Soil enzymatic C, N, and P activities increased significantly with increasing elevation but decreased with increasing soil depth, and we observed higher levels of enzymatic activity in grassland soil than in forest soil. Soil enzymatic C and N activities in the silt + clay fraction (&lt;53 µm) were higher compared to the larger aggregates (&gt;53 µm), likely due to the higher soil C and N substrate availability in small fractions. The δ¹³C values of the aggregates relative to bulk soils showed an increasing trend of ¹³C enrichment with decreasing aggregate size classes and were correlated with the corresponding enzyme activities. The soil C potentially flowed from macro- to microaggregates in the order of large macroaggregate (&gt;2000 µm) → small macroaggregate (250–2000 µm) → microaggergate (53–250 µm) → silt + clay fractions, suggesting the predominant formation of recent C inputs in the large macroaggregate and its stabilization in the smallest fraction. Overall, our findings provided valuable insights into soil C stabilization and microbial processing within aggregate fractions along elevational gradients in alpine ecosystems.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"250 ","pages":"Article 108702"},"PeriodicalIF":5.4,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143100334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A weakly supervised soil pore segmentation method based on traditional segmentation algorithm","authors":"Yinkai Fu ,&nbsp;Zihan Huang ,&nbsp;Yue Zhao ,&nbsp;Benye Xi ,&nbsp;Yandong Zhao ,&nbsp;Qiaoling Han","doi":"10.1016/j.catena.2024.108660","DOIUrl":"10.1016/j.catena.2024.108660","url":null,"abstract":"<div><div>Soil pore structure plays an important role in the ecosystem. In recent years, researchers have begun utilizing deep learning to segment soil pores. However, when confronted with a large number of soil pore datasets that require annotation, the effort and time for manual labeling are limited and insufficient to accurately annotate the entire dataset. To address this issue, this paper proposes a weakly supervised soil pore segmentation method (WSSPS) based on traditional segmentation algorithms. WSSPS generates soil pore pseudo-labels through the traditional segmentation algorithm for pre-training in the upstream task. Subsequently, fine-tuning was performed in the downstream task using expert-defined labels that only accounted for 1.8% to 35.6% of the total dataset to obtain the final segmentation effect map. In this study, three traditional segmentation algorithms are utilized for comparison experiments in the upstream task, and they are also compared with each other and four supervised deep learning methods. The results demonstrate that WSSPS not only possesses better segmentation results than traditional and supervised methods, but also greatly reduces the amount of manual annotation. This study facilitates the application of deep learning in soil pore segmentation and provides image processing technical support for the advancement of modern soil research.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"249 ","pages":"Article 108660"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143181873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chain effect of attitude on epilithic moss distribution on rock faces in a subalpine region","authors":"Xinyue Zhao ,&nbsp;Han Liu ,&nbsp;Panpan Wang ,&nbsp;Qian Jin ,&nbsp;Maoqiang Zhao ,&nbsp;Yuquan Dai ,&nbsp;Chengmin Huang","doi":"10.1016/j.catena.2025.108709","DOIUrl":"10.1016/j.catena.2025.108709","url":null,"abstract":"<div><div>Extensive exposure of rocks and slopes to natural disasters and human activities has resulted in significant ecological degradation, necessitating the quick and reasonable restoration of the ecological environment in areas affected by rock slopes. Mosses, especially epilithic mosses, have great potential for use in ecological restoration projects in mountainous areas because of their strong endurance and adaptability. The microenvironmental conditions of the rock surface, such as light, moisture, and temperature can affect moss growth and distribution. Individual rocks exhibit diverse surface attitudes that presumably induce variations in microenvironmental conditions, leading to significant variations in the distribution and growth of mosses across different rock faces. In this study, the effects of rock face attitude and microenvironment on the growth and expansion of subalpine epilithic mosses on rock faces were studied at the Jiuzhaigou World Natural Heritage Site in China. The results showed that in a humidity range restrained by natural precipitation, the higher the humidity, the better was the moss growth. The optimum humidity range for epilithic moss was 20 % to 60 %, whereas 20–60 µmol·m⁻²·s⁻¹ was the optimal light intensity. When the temperature exceeded 14 °C in the rainy season, mossy growth was better. The inclination of the rock face had a pronounced influence on the water, light, and thermal regimes of the rock surface. Regarding the rock-epilithic moss system in the subalpine area, a chain effect could be identified that the rock surface attitude affects the microenvironment, and the microenvironment further affects the moss growth. The key factors of the three links were inclination of the rock face, humidity, and moss biomass, respectively. As the rock face slopes downward, the microenvironment gradually becomes less conducive to plant growth owing to deteriorating environmental conditions characterised by reduced light intensity, humidity, and temperature.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"249 ","pages":"Article 108709"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143181707","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Demands and possibilities for field-scale estimation of agricultural greenhouse gas balances","authors":"Taru Palosuo ,&nbsp;Jaakko Heikkinen ,&nbsp;Emmi Hilasvuori ,&nbsp;Liisa Kulmala ,&nbsp;Samuli Launiainen ,&nbsp;Anniina Lehtilä ,&nbsp;Ilkka Leinonen ,&nbsp;Maarit Liimatainen ,&nbsp;Miia Salminen ,&nbsp;Narasinha Shurpali ,&nbsp;Tarja Silfver ,&nbsp;Helena Soinne ,&nbsp;Julius Vira ,&nbsp;Jari Liski","doi":"10.1016/j.catena.2024.108649","DOIUrl":"10.1016/j.catena.2024.108649","url":null,"abstract":"<div><div>Soil organic carbon (SOC) changes and greenhouse gas (GHG) emissions from agricultural soils contribute considerably to anthropogenic climate change. This draws attention to the management of agricultural fields and creates the need to assess and understand the resulting SOC changes and GHG balances and their drivers. Currently, GHG reporting systems such as national GHG inventories, carbon footprinting, and reporting practices in voluntary carbon markets largely apply rough estimation methods for these emissions. These methods do not relevantly cover the impacts of management or environmental factors on SOC changes or GHG emissions and their large spatial variability. At the same time, the rapid development of sensor techniques and data analysis methods creates opportunities for creating field-scale monitoring and reporting systems based on various data streams, including remote sensing.</div><div>In this paper, we reviewed the existing GHG reporting systems, and how SOC changes and GHG emissions of agricultural soils are currently reported in them. We also reviewed the most important factors affecting field-scale GHG balances and SOC changes, and the current measurement techniques and modeling approaches applied, as well as novel integrated systems combining various data streams. Finally, we identified the key developments towards a credible, operational, and cost-efficient field-scale reporting system. We used Finland, which has already made considerable efforts to report and calculate agricultural emissions, as an example to highlight practical challenges.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"249 ","pages":"Article 108649"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143180616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Landslide utilization and driving mechanisms in alpine gorge areas of the eastern Qinghai–Tibet Plateau","authors":"Tianjun Qi ,&nbsp;Xingmin Meng ,&nbsp;Jing Chang ,&nbsp;Dongxia Yue ,&nbsp;Yongbin Wang ,&nbsp;Guan Chen","doi":"10.1016/j.catena.2024.108677","DOIUrl":"10.1016/j.catena.2024.108677","url":null,"abstract":"<div><div>The rapid terrain change zone along the eastern margin of the Qinghai–Tibet Plateau is among the most densely developed and hazardous regions for landslides globally. However, compared with the causes and spatial distribution of landslides, the extensive utilization of landslide bodies by humans in this area has received limited attention. Considering that strong earthquakes, extreme weather events, and extensive human activities can trigger landslide reactivation and catastrophic failure, revealing the utilization patterns, processes, and potential driving factors associated with landslides is crucial. This study utilizes the historical landslide database of the Bailong River Basin, comprising 6,609 landslides, alongside high-resolution human activity data. The results revealed that 569 landslides were used for settlements, 1,159 for road construction, and 2,269 for agricultural purposes. Overall, 49 % of landslides have been utilized, covering 23 % of the total landslide area. Considering the high reactivation risk and significant utilization costs of landslides, our findings suggest that the human use of landslide-affected areas is predominantly passive adaptation, which reflects the intrinsic connection between geological environments and human activities. In areas with frequent debris flows, the utilization rate of landslides reaches 54 %, which is significantly higher than 19 % reported in zones with low debris flow frequencies. Additionally, a positive linear correlation exists between the degree of urbanization and landslide utilization. Comparative analyses of utilized and unutilized landslides indicate that usability is significantly influenced by landslide type, size, morphology, altitude, slope, and formation time. Finally, we propose a conceptual model based on the regional context, highlighting the impact of debris flow-dominated geomorphic processes controlled by the synergistic effects of fault structures and the dry–hot valley climate, and urbanization on the distribution of human settlements. This study underscores the intricate interaction between human activities and geological environments, offering essential insights for future landslide risk management and mitigation strategies.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"249 ","pages":"Article 108677"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143180617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Metal accumulation and contamination in sediments of 12 plateau lakes in Southwest China in response to human activities over the past century","authors":"Guozhan Li ,&nbsp;Enfeng Liu ,&nbsp;Enlou Zhang ,&nbsp;Qinghui Zhang ,&nbsp;Xiaoyu Wang ,&nbsp;Wenke Chen ,&nbsp;Hezhong Yuan ,&nbsp;Jinkuo Lin","doi":"10.1016/j.catena.2024.108650","DOIUrl":"10.1016/j.catena.2024.108650","url":null,"abstract":"<div><div>Historical metal accumulation and contamination in individual lakes have been studied extensively, but a comprehensive understanding at the regional scale remains limited, which is essential for establishing baselines and formulating management strategies. The present study addresses this knowledge gap by analyzing the concentrations and accumulation rates of lithogenic and heavy metals in sediment cores from 12 lakes on the Yunnan–Guizhou Plateau (YGP) of China over the past century. The lakes were categorized into urban-industrial (UI) and agricultural-natural (AN) groups according to catchment-specific socioeconomic data. The decreasing concentrations and accumulation rates of lithogenic metals in the lakes, e.g., Al, K, Fe and Ti, typically since the mid-20th century, indicated changes in human-induced soil erosion. The enrichment factors (EFs) identified Cr, Cu, and Ni as mainly lithogenic sources, and they presented temporal variations similar to those of lithogenic elements, whereas Cd was the predominant contaminant despite low accumulation rates, followed by As, Hg, Pb and Zn, with the UI lakes displaying greater contamination than the AN lakes. Metal contamination also exhibited clear historical differences between the UI and AN lakes. Contamination of most metals began in the 1950 s in the UI lakes, 30 years earlier than in the AN lakes, due to early industrial development and discharges. Contamination of As, Cd, Hg, Pb and Zn has increased since the 1980 s with rapid economic development in both types of lakes, and the accumulation rates of anthropogenic metals have indicated slightly decreasing contamination since the 2000 s due to the implementation of environmental policies, although the enrichment factor has continuously increased. The variations in mass accumulation of heavy metal contamination (ACC_a) in lake sediments were positively correlated with catchment-specific socioeconomic indicators, e.g., the proportion of industrial output, proportion of cropland area and urbanization rate, highlighting the causal link between economic development and metal contamination.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"249 ","pages":"Article 108650"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143180658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"From rock to bottle: strontium isotopes (87Sr/86Sr) as indicator of provenance for the volcanic wines of altitude from São Joaquim, southern Brazil","authors":"Erico Albuquerque Santos ,&nbsp;Luana Moreira Florisbal ,&nbsp;Ross Stevenson ,&nbsp;David Widory ,&nbsp;Denilson Dortzbach ,&nbsp;Bruna Saar de Almeida ,&nbsp;Arcângelo Loss","doi":"10.1016/j.catena.2024.108624","DOIUrl":"10.1016/j.catena.2024.108624","url":null,"abstract":"<div><div>Studies worldwide, particularly in Canada, Italy and Brazil, have demonstrated that the ⁸⁷Sr/⁸⁶Sr ratio is a reliable indicator of the geographic origin of wines. We present here the first ⁸⁷Sr/⁸⁶Sr isotope study for the <em>Wines of Altitude of Santa Catarina</em> geographical indication that was recently created in the state of Santa Catarina, southern Brazil. The goal of this study is to evaluate the forensic application of strontium isotope ratios as an indicator of provenance for the wines of São Joaquim, the main wine-growing region in the state of Santa Catarina, which produces wines from European grape varieties (<em>Vitis vinifera L.</em>) grown in soils formed by the weathering of volcanic rocks of the Serra Geral Group (Paraná Magmatic Province). The ⁸⁷Sr/⁸⁶Sr of rocks, soils (bulk and labile fractions), vines (leaves and grapes) and wines (Sauvignon Blanc and Cabernet Sauvignon) from three wineries from São Joaquim were determined. Bedrock ⁸⁷Sr/⁸⁶Sr ratios ranged from 0.705362 for the basaltic-andesitic rocks to 0.724819 for dacites, consistent with reported values for these types of rocks. We identified a strong correlation between the ⁸⁷Sr/⁸⁶Sr ratios of the grapes and leaves, but in contrast to most previous studies there was no correlation between those of the soil (both bulk and labile fractions) and wine samples. This indicates that although the Sr isotopes in grapes and leaves behaved conservatively, the Sr isotopes in the soils may have been modified by vineyard agricultural practices, such as fertilization and liming. We thus recommend that soil sampling be done at depths &gt;60 cm to avoid external addition of strontium. As the ⁸⁷Sr/⁸⁶Sr ratios of commercial wines represent the average isotope ratio of a given vineyard, the isotope correlation between wines and the other samples may be challenging. Despite that, it was possible to distinguish the ⁸⁷Sr/⁸⁶Sr ratios of the wines from São Joaquim, state of Santa Catarina, from the wines from Bento Gonçalves, state of Rio Grande do Sul. Even though the wines from both regions are made from grapes cultivated in the same geological unit, i.e., volcanic rocks from Serra Geral Group (Paraná Magmatic Province), the wines yield different Sr signatures.</div></div>","PeriodicalId":9801,"journal":{"name":"Catena","volume":"249 ","pages":"Article 108624"},"PeriodicalIF":5.4,"publicationDate":"2025-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143182403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}