Archives of Environmental Contamination and Toxicology最新文献

{"title":"Interplay of Aquatic and Riparian Variables in Two Anthropogenically-Influenced Small Stream Catchments","authors":"Alexander Feckler,&nbsp;Sebastian Stehle,&nbsp;Jean-Nicolas Beisel,&nbsp;Etienne Chanez,&nbsp;Tanja J. Joschko,&nbsp;Alexis P. Roodt,&nbsp;Thomas Schmidt,&nbsp;Verena C. Schreiner,&nbsp;Ralf Schulz,&nbsp;Cybill Staentzel,&nbsp;Jens Schirmel","doi":"10.1007/s00244-026-01205-5","DOIUrl":"10.1007/s00244-026-01205-5","url":null,"abstract":"<div><p>Small streams are important ecosystems in many areas globally, playing a crucial role in conserving biodiversity and providing ecosystem functions. However, owing to their high connectivity with surrounding landscapes, small streams are particularly susceptible to drivers of biodiversity decline. We report here the results of a monitoring program conducted between 2018 and 2021 at 18 sites in two stream catchments in southwest Germany, characterized by near-natural to highly anthropogenic land use. The monitoring program included 26 environmental, biological, and anthropogenic stressor variables describing the landscape context, aquatic ecosystem compartments, and riparian areas. We used ordination analysis and factor analysis of mixed data (FAMD) to analyse the relationship between variables and the effects of anthropogenic stressors on ecosystem structure and functioning. Results showed that near-natural upstream sites are substantially less impacted by anthropogenic stressors (e.g., pesticide pollution, morphological alterations) compared with agricultural and urban downstream sites. Biotic parameters, such as abundances and taxa richness of aquatic macroinvertebrates, fish, and carabid beetles, as well as leaf litter decomposition, exhibited overall high variations between sites. FAMD assigned the stream sites into four groups (i.e., forest, grassland, agriculture, viticulture), primarily based on land use and anthropogenic stressor influences and found anthropogenic stressors to often co-occur. Lower aquatic macroinvertebrate abundances and diversity, as well as reduced leaf litter decomposition, were observed at sites with higher anthropogenic disturbances. Overall, our findings suggest that small streams are subjected to multiple anthropogenic stressors, resulting in negative effects on both aquatic and riparian ecosystem health.</p></div>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":"91 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148343731","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}

{"title":"Exposure to Estrone Impairs Oogenesis and Spawning in Zebrafish (Danio rerio)","authors":"Yves Moreira Ribeiro,&nbsp;Davidson Peruci Moreira,&nbsp;Alessandro Loureiro Paschoalini,&nbsp;Nilo Bazzoli,&nbsp;Elizete Rizzo","doi":"10.1007/s00244-026-01202-8","DOIUrl":"10.1007/s00244-026-01202-8","url":null,"abstract":"<div><p>Estrone (E1) is one of the major natural estrogens influencing the reproductive system of vertebrates. However, it contaminates aquatic environments due to runoff from livestock waste and the discharge of domestic sewage. The aim of this study was to investigate the impact of exposure to environmentally relevant concentrations of E1 on oogenesis and spawning in zebrafish (<i>Danio rerio</i>). Fish were exposed, in duplicate, to 20, 200, and 2000 ng/L of E1 for 49 days for oogenesis analysis evaluating histology, sex steroids, morphometry, cell proliferation, apoptosis, immunohistochemistry for insulin-like growth factor (IGF) and inducible nitric oxide synthetase (iNOS). 17β-estradiol (E2) and 11-ketotestosterone (11-KT) were assessed by ELISA assay. Nitric oxide production was evaluated indirectly by quantifying nitrite. Results revealed that E1 exposure altered the proportions of ovarian follicles and somatic components, with significant increase of oogonia, follicular atresia and inflammatory infiltrate, and decrease of follicular cells. Levels of E2, and immunoreaction for IGF1 increased in E120 and 200 ng/L groups, but 11-KT, IGF2 and IGF1R were not altered. Nitrite concentrations in ovaries were significantly elevated in E1 200 and 2000 ng/L groups, but iNOS immunoreaction was not altered. These changes led to reduced egg production in all groups exposed to E1 and significatively decreased fertilization rates at 200 and 2000 ng/L. Overall, the findings demonstrate that E1, even at concentrations commonly found in surface waters, has detrimental effects on ovarian development, gametogenesis and reproductive success in zebrafish. Monitoring environmental estrogens levels in aquatic environments is therefore essential for fish conservation.</p></div>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":"91 1","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00244-026-01202-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148262644","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}

{"title":"Exploring Coconut Husk as an Organic Matter Enrichment Alternative in Sediment Toxicity Test","authors":"Davide Asnicar,&nbsp;Benjamin de Jourdan","doi":"10.1007/s00244-026-01196-3","DOIUrl":"10.1007/s00244-026-01196-3","url":null,"abstract":"<div><p>The use of artificial sediment in toxicity testing is required in studies assessing the impact of chemicals on benthic communities and testing chemicals for registration, as it offers increased repeatability and enhances consistency across bioassays and laboratories. While peat is conventionally incorporated into artificial sediment formulations for toxicological testing as the source of organic matter (OM), it is not a sustainable resource due to the long time it takes to form and the environmental impact of its extraction (carbon loss equivalent to 2.1 megatons of carbon dioxide emissions annually and potential release of other elements into the environment). In a preliminary effort, the usability of coconut husk as an alternative to peat in formulating artificial sediments for toxicity testing was assessed. Post-larval American lobsters (<i>Homarus americanus</i>) were exposed for 15 days to test sediment prepared with either peat or coconut husk as a source of OM. Three OM levels were tested: 0.5, 2.3, and 5% of sediment. Dry sediment was mixed with an antiparasitic drug, ivermectin, to achieve 4 desired concentrations (nominal 0, 40, 100, 400 ng/g DW). Immobility and mortality were assessed every day to calculate EC50s and LC50s, as well as incipient EC50 and LC50. The test was replicated twice over two years. Although the test is preliminary and warrants further investigation, the control performances (within validity criteria in all cases) and the EC-LC50 results indicate that the presence of coconut husk does not introduce toxicity effects of the tested chemical, suggesting its suitability as a viable alternative for toxicity testing.</p></div>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":"91 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148237018","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}

{"title":"Bioaccumulation Patterns of Potentially Toxic Elements in Three Grouper Species from the Nizampatnam Coast, India: Multivariate Analysis and Risk Assessment","authors":"Darwin Chatla,&nbsp;Padmavathi Pamulapati,&nbsp;Suneetha Kola,&nbsp;Ravikumar Kapavarapu,&nbsp;Mahmoud Mahrous M. Abbas","doi":"10.1007/s00244-026-01200-w","DOIUrl":"10.1007/s00244-026-01200-w","url":null,"abstract":"<div><p>The Indian Bay of Bengal coast represents an important marine fishing area and serves as a significant source of dietary protein for consumers. These highlights growing concerns regarding the bioaccumulation of potentially toxic elements (PTEs) in fish and the associated environmental and human health risks linked to their consumption. Thus, this study aims to assess the accumulation of PTEs (As (arsenic), Sr (strontium), Ti (titanium), Be (beryllium), Cd (cadmium), Sb (antimony), Pb (lead), Hg (mercury), and Li (lithium)) in the muscles of three groupers. The highest value (29.88 ± 0.17 µg/g dry wt.) was observed in <i>Epinephelus areolatus</i> for As, and the lowest in <i>E. bleekeri</i> for Be (0.59 ± 0.20 µg/kg dry wt.). Multivariate analyses (PCA and HCA) confirmed a very close relationship among the As, Cd, Sb, Ti, and Be, while Pb, Hg, Th, and Li had their own specific habitats of bioaccumulation, implying distinct inputs of PTE. Health risk evaluations reveal that As was the most hazardous PTE, with the incidence of toxic effects and cancer risk, especially for habitual consumers. However, Ti is the most hazardous PTE, posing the highest non-carcinogenic risk of the studied species. Metal–protein docking further showed the strong binding of Pb²⁺ and Sr²⁺ to Nrf2, p53, and DNMT1, indicating potential disruption of redox regulation, genomic stability, and epigenetic control. The findings indicate that the intake of the specified grouper species poses a significant arsenic-related health risk to people, underscoring the necessity for ongoing monitoring and management of PTE contaminants in fisheries.</p></div>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":"91 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148214937","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}

{"title":"Toxicological Assessment of Petroleum Product WAFs in Crassostrea gigas: Evidence for Sub-chronic Tolerance and Rapid PAC Depuration","authors":"Anupinder Hura,&nbsp;Timothy Green,&nbsp;Christopher Kennedy","doi":"10.1007/s00244-026-01194-5","DOIUrl":"10.1007/s00244-026-01194-5","url":null,"abstract":"<div><p>With increasing petroleum transport through coastal waters of the northeastern Pacific, understanding the ecological hazards of these mixtures is essential, yet the sublethal impacts on benthic filter feeders remain poorly characterized. The sub-chronic (7-d exposure) effects of crude oil (CO), marine diesel (MD), and diluted bitumen (DB) water-accommodated fractions (WAFs) on the scope for growth (oxygen consumption, food absorption efficiency, and clearance rate), as well as gonadal and digestive gland histopathology in Pacific oysters (<i>Crassostrea gigas</i>) were examined. Initial total polycyclic aromatic compound (TPAC) concentrations in WAFs were ranked CO &gt; MD &gt; DB, which also accumulated within oyster tissues in the same order. Sub-chronic exposures to different WAF dilutions of three petroleum products did not alter any measured endpoints in Pacific oysters. PACs accumulated in oyster tissues had a rapid depuration after the exposure period due to the potential biotransformation of parent hydrocarbons, which could elucidate the lack of significant adverse effects. These results indicate that adult <i>C. gigas</i> maintained physiological and tissue-level integrity under transient, declining petroleum exposure conditions, providing context for interpreting potential impacts of short-term nearshore spill scenarios.</p></div>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":"91 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148203851","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}

{"title":"Is the Presence of Pesticides in the Environment a Problem for Everyone? A Comparison of People and Their Environment in the City and Near Crops Fields in the Austral Pampas Region of Argentina","authors":"Mirta L. Menone,&nbsp;Andrea C. Crupkin,&nbsp;Diana M. Villagran,&nbsp;Verónica Taglioretti,&nbsp;Sandra K. Medici,&nbsp;Virginia C. Aparicio,&nbsp;Eliana Gonzalo Mayoral,&nbsp;María A. Echegoyen,&nbsp;Lucas R. Lombardero,&nbsp;Marcela C. Dopchiz,&nbsp;Lucas Landivar,&nbsp;Clara M. Albani,&nbsp;Elizabeth Samarco,&nbsp;Silvina Fábregas Lengard","doi":"10.1007/s00244-026-01199-0","DOIUrl":"10.1007/s00244-026-01199-0","url":null,"abstract":"<div><p>Although evidence of adverse effects on human health is still scarce, exposure to pesticides has been shown to have a negative impact outside agroecosystems. We compared exposure to current use pesticides in one area surrounded by crop fields (Area 1) with exposure in another area located in the center of a city (Area 2). Both areas are located within one of the world’s most agriculturally productive regions. We analyzed the presence of glyphosate and its metabolite aminomethylphosphonic acid (AMPA) in urine samples from 86 female volunteers who had been environmentally exposed. Potential genotoxicity was tested using the micronucleus assay on buccal mucosa samples taken from the same donors. We also evaluated the residues of current use pesticides in drinking water and soil samples taken from public places in the two areas. All the analytical determinations were performed using ultra-high performance liquid chromatography coupled with mass spectrometry (UHPLC-MS/MS). When glyphosate-positive samples were considered, significantly higher concentrations of glyphosate were found in Area 1 than in Area 2 (<i>p</i> = 0.02). An increase in the frequency of binucleated cells (<i>p</i> = 0.039) and linked nucleus (<i>p</i> = 0.035) was observed in women from Area 1 compared to those from Area 2. All the drinking water samples tested positive for at least two pesticide residues while 85% of the soil samples tested positive for at least 1. A total of 27 different pesticides were detected in the drinking water in Area 1, with detection frequencies ranging from 5 to 79%. In Area 2, imidacloprid, 2,4-D, atrazine and dichlosulam were detected at detection frequencies of 100%, 71%, 57% and 29%, respectively. In soils from Area 1, the metabolites hydroxy atrazine and AMPA presented the higher detection frequency, while in Area 2, glyphosate and AMPA were detected in 71% of samples, followed by atrazine and its metabolites. Modelling showed that the distance between donors’ homes and crop fields was the key factor in explaining glyphosate and AMPA concentrations in urine, the presence of pesticides in drinking water and the observed cytotoxicity. The significant cytotoxicity detected in women living near crop fields is a particular cause for concern regarding potential hazards to human health in that area. On the other hand, this study has also demonstrated the ubiquity of the current use pesticides in environmentally exposed women, since glyphosate has been found in the urine of people living in urban areas. This fact merits further, more in-depth analysis.</p></div>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":"91 1","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148203815","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}

{"title":"Genotoxicity Effects of Polylactic Acid Microplastic Present with Antibiotic Sulfamethoxazole on the Pacific Oyster Crassostrea Gigas (Thunberg, 1793)","authors":"Danh Thien Nguyen,&nbsp;Gia Minh Tu Pham,&nbsp;Ngoc Tuan Nguyen,&nbsp;Michel Kaiser,&nbsp;Tony Gutierrez,&nbsp;Huong Mai","doi":"10.1007/s00244-026-01201-9","DOIUrl":"10.1007/s00244-026-01201-9","url":null,"abstract":"<div><p>In this study, we assessed the genotoxicity induced by the exposure to polylactic acid microplastics (PLA-MPs) and/or antibiotic sulfamethoxazole (SMX) in the marine bivalve species, Pacific oyster <i>Crassostrea gigas</i>. Oysters were exposed for 14 days to three experimental conditions: PLA-MPs alone, SMX alone and mixing PLA-MPs + SMX at concentrations of five mg/L for PLA-MPs and 64 ng/L for SMX. To achieve this goal, the mediated genotoxicity was assessed by analyzing biomarker such as micronucleus frequency, the degree of DNA damage and changes in gene expressions in gill tissues of exposed oysters, while PLA-MPs accumulation were analyzed in gill tissues. Results show that PLA-MPs were the primary driver of microplastic accumulation in oyster gill tissues, whereas co-exposure PLA-MPs + SMX resulted in significant but reduced accumulation compared with PLA-MPs. Exposure to PLA-MPs or in combination with antibiotic SMX induced additional transmission pathways which lead to DNA damage and micronucleus formation. However, oysters co-exposed to PLA-MPs + SMX exhibited increased susceptibility to micronucleus in gill tissues, whereas the extent of DNA damage in oysters exposed to PLA-MPs alone was comparable to that observed under combined PLA-MPs + SMX exposure. Notably, combination of PLA-MPs and SMX amplified oxidative stress and detoxification responses in oysters through SMX modulating PLA-induced antioxidant signaling. This combination exacerbated suppression of key detoxification pathways, thereby potentially increasing susceptibility to genotoxic effects in contaminated aquatic environments. The research findings of this study provide relevant insights for toxicology related to bio-based microplastics.</p></div>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":"90 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148026324","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}

{"title":"Observation of Concurrent Latitudinal and Longitudinal Fractionations of α- and β-HCH in Chinese Rural Surface Soil: Implications for Global Lifecycle","authors":"Shuai Hao,&nbsp;Yi-Fan Li,&nbsp;Wan-Li Ma,&nbsp;Li-Yan Liu,&nbsp;Zi-Feng Zhang,&nbsp;Wen-Long Li,&nbsp;Ning-Zheng Zhu,&nbsp;Pu-Fei Yang,&nbsp;Hong-Liang Jia,&nbsp;Min-Gang Cai,&nbsp;Roland Kallenborn,&nbsp;Derek CG Muir","doi":"10.1007/s00244-026-01197-2","DOIUrl":"10.1007/s00244-026-01197-2","url":null,"abstract":"<div><p>In this study, for the first time, the distribution and fractionation of persistent organic pollutants (POPs) along both latitudinal and longitudinal transects are investigated simultaneously in surface soil. Distributions and fractionations of two isomers of hexachlorocyclohexane (HCH), α- and β-HCH, were analyzed in Chinese rural surface soil using a set of soil samples collected in 2005, 2012, and 2019 to study the lifecycle of the global/latitudinal fractionation of POPs. The primary longitudinal and secondary latitudinal distributions for each of α- and β-HCH and the primary longitudinal and secondary latitudinal fractionations formed together by these two isomers were observed concurrently in these three years. Based on these observations, we identified <i>three stages</i> for the lifecycle of global/latitudinal fractionation for α- and β-HCH. In <i>Stage I</i>, the primary fractionation of the two isomers mainly due to the distance from the source regions begins and intensifies with the fractionation pattern of the enrichment of the compounds having lower <i>K</i>_OA (octanol-air partition ratio) values and the depletion of the compounds with higher <i>K</i>_OA values. In <i>Stage II</i>, the secondary fractionation caused mainly by the air temperature gradient along latitudinal directions begins and intensifies, keeping the fractionation patterns appearing in the Stage I unchanging. In <i>Stage III</i>, the secondary fractionation is weakened primarily caused by local factors, degradation in particular, until its disappearance. The fractionation patterns appearing in the Stages I and II may change. Although the present study on the three stages for the development of latitudinal fractionation is for α- and β-HCH in Chinese surface soil. We believe that the findings presented in this study can provide instructive implications for the lifecycle of all polar cold-trapped persistent organic pollutants (PCT‑POPs) on a global scale.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture><span>The alternative text for this image may have been generated using AI.</span></div></div></figure></div></div>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":"90 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147938356","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}

{"title":"Impacts of Copper on Daphnia Populations Through the Disturbance of Predator–Prey Interactions","authors":"Takamasa Yoneyama,&nbsp;Masaki Sakamoto","doi":"10.1007/s00244-026-01195-4","DOIUrl":"10.1007/s00244-026-01195-4","url":null,"abstract":"<div><p>The kairomone released by larvae of phantom midges in the genus <i>Chaoborus</i> induces a defensive morphology in <i>Daphnia pulex</i>. This morphology effectively reduces predation pressure and prevents a sharp decline in prey population density. Copper, an anthropogenic pollutant, inhibits the induction of defense mechanisms. However, the consequences of this inhibition at the population level are unclear. In the present study, we confirmed the inhibitory effect of copper on morphological defense using an individual-level experiment (Exp. 1) and further evaluated the effects in a bi-trophic population-level experiment (Exp. 2). In Exp. 1, the induction of neckteeth was inhibited by copper at a concentration of 53.9 nM (Cu²⁺ activity of 0.26 nM). In Exp. 2, no inhibition was detected at a total concentration of 100 nM (on day 12); however, inhibitory effects were observed as Cu²⁺ activity increased. These results indicate that the inhibition of morphological changes cannot be explained by the total copper concentration but by the concentration of free copper ions. The copper-induced suppression of morphological defense resulted in a decrease in the abundance of juvenile <i>Daphnia</i> due to increased predation pressure from <i>Chaoborus</i> larvae. In conclusion, these findings emphasize the potential for environmental copper pollution to alter population dynamics and prey–predator relationships in aquatic taxa.</p></div>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":"90 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147808186","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}

{"title":"Reconstructing the Effects of Anthropogenic Activities and Climate Change in Three Lakes of the Fildes Peninsula, Maritime Antarctic","authors":"Florencia Bertoglio,&nbsp;Samuel Yergeau,&nbsp;Claudia Piccini,&nbsp;Santiago Giralt,&nbsp;Roberto Urrutia,&nbsp;Dermot Antoniades","doi":"10.1007/s00244-026-01193-6","DOIUrl":"10.1007/s00244-026-01193-6","url":null,"abstract":"<div><p>The Fildes Peninsula (maritime Antarctica) is greatly affected by global warming and local human impacts since it is in one of the Antarctic regions with the highest intensity of human activity. To establish the effect of human activities on Fildes Peninsula lakes, we compared trends in diatom assemblages, bacterial communities and metal concentrations in sediment cores from two lakes close to human infrastructure with those in a more remote lake. In the two lakes close to stations and the airport, we found heavy metal enrichments and diatom teratologies, as well as notable changes in diatom assemblages in one of these lakes, roughly coincident with the time when the first two stations were built (~ 1970). Due to the known association between diatom teratologies and metal enrichment, metal stress is a convincing explanation for these changes. Certain bacterial taxa determined to be indicators of pollution were also found to be more abundant in the impacted lakes in recent sediments (i.e., Hungateiclostridiaceae, OPB41, <i>Anaerovorax</i> and <i>Leptolinea</i>). Metal, diatom and bacteria changes observed in the lake more distant to infrastructure were more subtle and are likely related to climate change alone. Given the proximity of the affected lakes to the airport and roads, our data suggests that transportation infrastructure and activity on Fildes Peninsula is likely a key cause of contamination in the region’s ecosystems. This study provides important insights into how human activities and climate change have affected Fildes Peninsula aquatic ecosystems and how they may respond to future stressors.</p></div>","PeriodicalId":8377,"journal":{"name":"Archives of Environmental Contamination and Toxicology","volume":"90 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2026-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147808187","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}