Aquatic Sciences最新文献

{"title":"The association of a non-native amphipod with an invasive reef-building polychaete as an enhancer of biological invasion processes","authors":"María Cielo Bazterrica,&nbsp;Carlos Rumbold,&nbsp;Graciela Álvarez,&nbsp;Sandra Obenat","doi":"10.1007/s00027-025-01209-8","DOIUrl":"10.1007/s00027-025-01209-8","url":null,"abstract":"<div><p>Several population dynamics and reproductive traits of the non-native amphipod <i>Monocorophium insidiosum</i> (Crawford 1937) were studied during their reproductive season, considering their association with the invasive polychaete <i>Ficopomatus enigmaticus</i> (Fauvel, 1923) in the Mar Chiquita coastal lagoon (37° 40 S, 57° 23 W). Amphipods were sampled biweekly in <i>F. enigmaticus</i> reef-like structures (“reefs”) and in sediment from areas without reefs. In reefs, the vertical gradient was also considered. There were differences in <i>M. insidiosum</i> population parameters between habitats (reef and sediment) and among layers within the reef (surface, middle and bottom). Populations in reefs overall displayed higher abundance, continuous reproductive activity and recruitment, and a male-biased sex ratio. In contrast, sediment populations exhibited lower adult densities, sporadic reproduction and recruitment, and a predominantly female-biased sex ratio. Within reefs, the surface had the highest population densities, consistent reproductive activity and a male-biased sex ratio, whereas there was no defined pattern at the bottom aside from a higher proportion of juveniles. These results suggest that the degree of population expansion of <i>M. insidiosum</i> into the coastal lagoon is shaped by a strong association with <i>F. enigmaticus</i> reefs, where <i>M. insidiosum</i> responds to small-scale changes in the vertical habitat structure that enhance its population reproductive potential (i.e., recruitment). This work provides evidence of different non-native and invasive species strategies in which recruitment patterns inside <i>F. enigmaticus</i> reefs might be a mechanism for <i>M. insidiosum</i> population permanence.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165617","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Diversity and distribution of Decapoda and Stomatopoda from the Mekong estuaries in relation to environmental parameters","authors":"Thai Thanh Tran,&nbsp;Ngo Xuan Quang,&nbsp;Nguyen Thi Phuong Thao,&nbsp;Thanh Luu Pham","doi":"10.1007/s00027-025-01206-x","DOIUrl":"10.1007/s00027-025-01206-x","url":null,"abstract":"<div><p>Crustaceans play a vital role in maintaining ecosystem balance and supporting human nutrition, relying heavily on estuarine habitats during critical stages of their life cycles. However, research on crustacean assemblages in the Mekong estuaries remains limited, despite their significance to local fisheries and food security. This study aimed to investigate the diversity and distribution of decapod and stomatopod crustaceans, while also identifying key ecological factors influencing their patterns. From March and November 2022, crustacean specimens and water quality data were collected from four estuaries: Cua Dai, Ba Lai, Ham Luong, and Co Chien, within the Mekong estuarine system. A total of 13,134 specimens were recorded, representing 62 species (55 decapods and 7 stomatopods), with the families Penaeidae, Palaemonidae, and Alpheidae being the most dominant. The most abundant species included the palaemonids <i>Macrobrachium equidens</i>, <i>M. mirabile</i>, and <i>Exopalaemon vietnamicus</i>, along with the penaeids <i>Parapenaeopsis hardwickii</i> and <i>Metapenaeus lysianassa</i>. Analysis revealed significant spatiotemporal variations in species composition and abundance. Crustacean densities were notably higher during the dry season (163.21 ± 206.69 inds./1000 m²), at the Cua Dai estuary (163.50 ± 211.15 inds./1000 m²), and in the outer estuary area (155.96 ± 166.74 inds./1000 m²). Diversity indices including Shannon–Wiener, Margalef, and evenness, also varied significantly across seasons and locations. These patterns were likely influenced by environmental factors. In particular, crustacean abundances and diversities were positively correlated with dissolved oxygen and salinity, indicating these as key determinants of assemblage structure. Salinity alone was responsible for approximately one-third of the observed variation in the crustacean assemblages. The findings offer valuable insights for the management and conservation of crustacean assemblages, particularly in the context of environmental changes and increasing fishing pressures. </p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165481","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Nitrogen and phosphorus release from a dominant plant in the water-level fluctuation zone of the Three Gorges Reservoir","authors":"Ying Liu,&nbsp;Ziyan Lu,&nbsp;Genghua Wu,&nbsp;Defu Liu,&nbsp;Henglin Xiao,&nbsp;Hong Yang,&nbsp;Heyun Wang,&nbsp;Jinhong Feng","doi":"10.1007/s00027-025-01204-z","DOIUrl":"10.1007/s00027-025-01204-z","url":null,"abstract":"<div><p>Periodic impoundment in reservoirs leads to vegetation decay and decomposition, which, in turn, affects nutrient release from sediment. The aim of this study is to investigate the nitrogen and phosphorus release characteristics of <i>Cynodon dactylon</i> (L.) Pers., a dominant plant species in the water-level fluctuation (WLF) zone of one of the world’s largest reservoirs, the Three Gorges Reservoir (TGR), China. A total of 288 live and dead plant samples were subjected to a 120 d submergence experiment at water depths of 0, 3, 6, 10, 20, and 30 m. The dry weights of the plants, as well as the total nitrogen (TN) and total phosphorous (TP) contents of the plant samples, were studied. The water environment and microbial structure and function were also analysed. The findings demonstrated that, in contrast to that of the dead vegetation, the dry weight of the live plants exhibited sustained growth throughout the early submergence period. However, the dead plants experienced continuous dry weight loss. The TN content in the live plants peaked at approximately 30 d (15 d at 30 m water depth) post-submergence, followed by a gradual decline, while significantly higher concentrations (<i>P</i> &lt; 0.05) were maintained than the preflooding levels after 120 d of submergence. However, the dead plants presented a gradual decrease in TN, with significant differences among the various water levels after 120 d. The TP content in the live plants first decreased but then increased, whereas in the dead plants it continuously decreased. Significant differences in TN and TP release were observed between the live and dead plants (<i>P</i> &lt; 0.05). Compared with that of the live plants, the decomposition of the dead plants resulted in significantly greater TN release (4.35 ± 0.59 g kg⁻¹). Similarly, the dead plants presented tenfold greater TP release (1.02 ± 0.030 g kg⁻¹) than the live plants (0.09 ± 0.063 g kg⁻¹). The microbial communities, dominated by <i>Actinobacteria</i> (25.3%) and <i>Proteobacteria</i> (24.1%), were found to significantly influence nutrient release. Water environmental factors such as water depth, light intensity, dissolved oxygen, and specific conductivity affected mainly the nitrogen and phosphorus contents of the live plants. This research provides valuable insights into nutrient dynamics in the WLF zone of the TGR and highlights the differential contributions of live and dead plants to nutrient cycling processes.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Intake of microplastics by fishes in a floodplain lake of the Curiaú River (Macapá, Amapá, Brazil)","authors":"Luan Moura Miranda,&nbsp;Thayana Castro da Silva,&nbsp;Adson Afonso Pimentel,&nbsp;Khallyl do Rosário Ramos,&nbsp;Luis Maurício Abdon da Silva,&nbsp;Antônio Carlos Freitas Souza,&nbsp;Cecile de Souza Gama","doi":"10.1007/s00027-025-01203-0","DOIUrl":"10.1007/s00027-025-01203-0","url":null,"abstract":"<div><p>Plastics are used in almost every aspect of modern life, ranging from construction and electronics to clothing and food packaging. Freshwater ecosystems are the ultimate destination for many pollutants, including plastic particles with diameter &lt; 5 mm, commonly referred to as microplastics. When present in the aquatic environment, fishes actively or passively consume these microplastic particles. Studies on the natural diet of fishes can highlight and elucidate the impacts of this pollutant on aquatic ecosystems. In the study reported here, the stomachs, intestines and gills from 122 fishes (14 species) collected from the Curiaú River Resort during the dry and rainy seasons were analyzed by chemical digestion with KOH to verify the presence of microplastics. The fishes were categorized by trophic guild (herbivore, carnivore, piscivore, omnivore) and collection period (dry vs. rainy). We found a total of 732 microplastics, all classified as fibers, in 96% of the fishes examined. The predominant colors of the fibers were blue (59%) and black (33%). The highest consumption of microplastics occurred during the rainy season. Among the six most abundant fish species sampled, microplastics were most common in the cichlid <i>Geophagus</i> (eartheaters). We also found differences between trophic guilds, with carnivores scoring highest in terms of the consumption of microplastics. We found no association between fish size and weight and the quantity of microplastic particles consumed. This study provides valuable baseline data on the ingestion of microplastics by fishes in the Curiaú Resort, as well as new insights into the consumption of microplastic particles by freshwater fishes. We also compared our results to those from similar studies of fishes in aquatic environments around the world.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00027-025-01203-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145163886","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Hydrodynamical events shape lake-type-specific dynamics of manganese in boreal catchment","authors":"Jouni Lehtoranta,&nbsp;Antti Taskinen,&nbsp;Petri Ekholm,&nbsp;Pirkko Kortelainen","doi":"10.1007/s00027-025-01201-2","DOIUrl":"10.1007/s00027-025-01201-2","url":null,"abstract":"<div><p>Studies on lakes as modifiers of manganese fluxes in pristine catchments are limited, despite manganese being a sensitive redox-change indicator and participating in the cycling of many key elements. We compiled 26 years of monitoring data from interconnected monomictic humic lake and dimictic clear-water lake to estimate the mean daily lakes' imports, pools and exports of manganese. The humic lake, surrounded by peatlands, exported annually 1.7-fold more manganese per lake area than the clear-water lake, which is enclosed by mineral soils. Hydrodynamical events initiated lake-type-specific manganese refilling and removing periods lasting for months. Both lakes accumulated manganese in the near-bottom water layers during the period of ice-cover. However, the incomplete spring turnover in the humic lake left the manganese in the bottom layers untouched, and manganese was flushed to the clear-water lake mainly with surface water. The manganese that accumulated in the bottom layers was transported to the surface and exported to the clear-water lake only after the autumn turnover. In the clear-water lake, import from the humic lake and the spring turnover filled the surface water pool, which enhanced the export of manganese originating from both the catchment and lake itself. Most of the lake’s manganese was exported during ascending spring flooding while descending flooding enhanced in-lake removal. We conclude that lake-type-specific hydrodynamical events must be considered when using manganese as an indicator of redox-changes. Further research is needed to determine how climate-change induced shifts in the timing of hydrodynamical events affect manganese dynamics and exports in humic and clear-water lakes in boreal catchments.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00027-025-01201-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145160923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Hydrological and ecological changes in the lotic–lentic transformation: the effect of damming on the phytoplankton of the Tocantins River","authors":"Luana Silva de Castro,&nbsp;Idelina Gomes da Silva,&nbsp;Bárbara Dunck","doi":"10.1007/s00027-025-01202-1","DOIUrl":"10.1007/s00027-025-01202-1","url":null,"abstract":"<div><p>Reservoirs transform the physical, biological, and chemical characteristics of rivers, altering their flow dynamics and the availability of nutrients. After a river is dammed, the species composition in the reservoir and its tributaries tends to change in response to the new conditions that are generated. This work investigates the tributary rivers and sites along the main channel of the Tocantins River’s middle course. The study was conducted between 2009 and 2013 in the pre- and post-dam periods to evaluate the effects of the dam on phytoplankton. The area of study was located along the middle course of the Tocantins River, where the Estreito hydroelectric power plant is found. The richness of phytoplankton classes was higher during the pre-dam period, the dry season, and in the river’s main channel. The predominant classes were Bacillariophyceae, Chlorophyceae, and Cyanophyceae. We verified that damming the Tocantins River negatively affected the phytoplankton communities, reducing their richness and density in the post-dam period. The results showed that the species with the largest contributions to beta diversity were the most common and abundant ones, suggesting that the damming of the Tocantins River led to the loss of sensitive and specialist species.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145169858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Breathing in sleep: oxygen dynamics during the polar night in an Arctic lake","authors":"Ezgi Aşırok,&nbsp;Georgiy Kirillin","doi":"10.1007/s00027-025-01195-x","DOIUrl":"10.1007/s00027-025-01195-x","url":null,"abstract":"<div><p>Seasonally ice-covered Arctic lakes lack solar radiation during polar nights, and snow cover can extend the dark period up to half a year of permanent darkness. We used high-resolution temperature and dissolved oxygen data from three winters in Arctic Lake Kilpisjärvi to quantify oxygen conditions. We applied vertically resolved single-column oxygen budget and lake-averaged oxygen budget approaches to estimate drivers of deep-water oxygen depletion. Deep-water hypoxia occurred in all 3 years, with timing and magnitude strongly influenced by under-ice temperature and mixing. Basin-scale internal waves with periods exceeding diurnal lengths were persistent, generating turbulence indicated by a vertical diffusion coefficient exceeding conductive values by an order of magnitude as the only large-scale motions under ice. The major physical factor on oxygen dynamics was the ice formation date. A 1–2 weeks earlier ice-on resulted in temperatures close to the maximum density, reduced vertical mixing, and intensification of bottom gravity currents. Downslope lateral transport by gravity currents produced accumulation of low oxygenated waters in deep layers, responsible for 55–85% of the near-bottom oxygen decrease, the rest contributed by local oxygen uptake by sediment. A delayed ice-on led to stronger vertical mixing and weaker oxygen depletion. Oxygen consumption was mainly controlled by bottom oxygen flux, while water column respiration contributed about 20% of total depletion. The results highlight sensitivity of under-ice oxygen dynamics to physical transport processes. The effect of ice formation date on under-ice oxygen content suggests potentially strong response of Arctic lakes to shortening of the ice cover.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00027-025-01195-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Unveiling the spatiotemporal variation of zooplankton community structure and their relationship with environmental variables using multivariate analysis in a tropical mangrove estuary","authors":"Suman Nama,&nbsp;Ashna Shanmughan,&nbsp;Sahina Akter,&nbsp;Abhilash Wodeyar K,&nbsp;Shashi Bhushan,&nbsp;Karankumar Ramteke,&nbsp;Geetanjali Deshmukhe,&nbsp;Ashok Kumar Jaiswar,&nbsp;Annam Pavan Kumar,&nbsp;Binaya Bhusan Nayak","doi":"10.1007/s00027-025-01196-w","DOIUrl":"10.1007/s00027-025-01196-w","url":null,"abstract":"<div><p>Zooplankton assemblages and their relationship with environmental variables were studied in the Karanja estuary from January 2022 to March 2023. Thirty-seven zooplankton taxa were identified from the 60 samples, with copepoda emerging as the dominant group, contributing 33.6% of total abundance, followed by decapoda larvae (16.75%). Two-away ANOVA depicted significant spatiotemporal variation (<i>p</i> &lt; 0.05) of zooplankton community structure. Zooplankton abundance peaked during the monsoon season (248.94 ± 24.35 ind. m⁻³), followed by the pre-monsoon (200.65 ± 7.40 ind. m⁻³), and post-monsoon seasons (83.9 ± 2. 85 ind. m⁻³). Multivariate, biotic-environmental (BIO-ENV), and redundancy analyses revealed salinity, temperature, nitrite, nitrate, and transparency are the prevailing environmental parameters affecting zooplankton dynamics. Seasonal diversity indices, including the Shannon–Wiener index (2.56 ± 0.35), Margalef index (4.25 ± 1.05), and Pielou’s index (0.97 ± 0.01) indicate a functionally healthy and diverse zooplankton community. Indicator species analysis (<i>IndVal</i>) revealed that <i>Calanus</i> sp., <i>Centropages</i> sp., <i>Acartia</i> sp., <i>Oithona</i> sp., and <i>Diphyes dispar</i> and <i>Pleurobrachia pileus</i> are potential indicators of environmental changes for a particular season. This study highlights the utility of zooplankton community structure as an indicator of estuarine ecosystem health and environmental variation. Identifying seasonal-specific indicator taxa facilitates practical tools for long-term monitoring systems. Overall, the findings provide a scientific basis for formulating effective management strategies for conserving the biodiversity of the Karanja estuary.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Correction: Siliceous microfossils in the surface sediments of the eastern Arabian Sea","authors":"Rahul Khichi,&nbsp;Suhas Shetye,&nbsp;Siby Kurian","doi":"10.1007/s00027-025-01199-7","DOIUrl":"10.1007/s00027-025-01199-7","url":null,"abstract":"","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168095","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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":"Comparison of Kızılırmak and Yeşilırmak (Southern Black Sea) estuarine ecosystems based on macrobenthic biodiversity and environmental variables and new records for the macroinvertebrate fauna of Turkey","authors":"Melih Rüzgar,&nbsp;Aysun Gümüş","doi":"10.1007/s00027-025-01200-3","DOIUrl":"10.1007/s00027-025-01200-3","url":null,"abstract":"<div><p>This study investigates the Kızılırmak and Yeşilirmak estuarine ecosystems in Turkey, which provide significant freshwater and nutrient inputs to the Samsun Shelf area along the midsouthern Black Sea. The objective was to determine the current ecological status and to detect any significant differences between two estuarine ecosystems (restored—Kızılırmak—and natural—Yeşilırmak) in terms of macrobenthic invertebrates and environmental variables. Macrobenthic invertebrates were collected with a 500 µm mesh size kick-net. A total of four samplings, one in each season, were collected during February, May, August, and November of 2017. A total of 90 taxa, mainly oligochaetas and chironomids, were identified, composed of 51 species in Kızılırmak and 60 in Yeşilırmak. <i>Orthocladius (Orthocladius) dentifer</i>, <i>O. (O.) clarkei</i>, <i>O. (O.) dorenus</i>, <i>O. (O.) wetterenesis</i>, <i>O. (O.) mixtus</i>, and <i>Mystacides longicornis</i> were found to be new records for Turkey. The distribution of macrobenthic invertebrates was compared between season, estuary, grain size and stations. In Kızılırmak and Yeşilırmak, the region characterized as estuarine was found to be small transitional waters. In Kızılırmak, a high similarity was observed among stations, accompanied by relatively low diversity across sampling sites. This phenomenon is thought to be a natural consequence of the reconstruction activities along the river, which have deleteriously affected the ecosystem. The Yeşilırmak estuary has a more diverse macrobenthic community and appeared to be better preserved than the Kızılırmak area.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00027-025-01200-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145166864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}