Aquatic Sciences最新文献

{"title":"The influence of land use, microhabitat and aquatic insect subsidies on predatory riparian arthropod distributions","authors":"Peter E. Carlson","doi":"10.1007/s00027-024-01145-z","DOIUrl":"10.1007/s00027-024-01145-z","url":null,"abstract":"<div><p>Agricultural land use effects on aquatic and riparian communities are complex and multifaceted, resulting in habitat degradation and biodiversity loss in riparian and instream ecosystems. This study correlated predatory arthropod densities and species richness to abundance of potential prey (emerged aquatic insects and terrestrial dipterans) along an agricultural to forested land use gradient. Pearson’s correlation coefficient was used as an effect size to measure attraction to prey, and the ratio of predator to prey was calculated to indicate potential consumption capacity of prey. Results revealed that gradients in land use and microhabitat condition, distance from the stream and season were important explanatory factors. Positive correlations between predatory arthropods and aquatic insect abundance were more apparent than those with terrestrial dipteran abundance, suggesting an overall preference of aquatic prey. However, positive correlations between predatory arthropods and adult aquatic insect subsidies were strongest in microhabitats with characteristics associated with higher moisture (e.g., greater soil organic matter and shade), particularly with increasing agricultural land use. In September, there was an indication of reduced confinement to microhabitats, likely as an effect of elevated seasonal precipitation. Overall results of this study suggest that a limited tolerance to desiccation in predatory arthropods increases spatial confinement with agricultural land use and ultimately restricts access to adult aquatic insect subsidies. The findings of this study have implications for the pathways that adult aquatic insect subsidies use to enter into riparian food webs with consequences that could cascade across trophic levels and larger spatial scales.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00027-024-01145-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142925649","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":"Increased drying threatens alpine pond biodiversity more than temperature increase in a changing climate","authors":"M. Lamouille-Hébert,&nbsp;F. Arthaud,&nbsp;A. Besnard,&nbsp;M. Logez,&nbsp;T. Datry","doi":"10.1007/s00027-024-01155-x","DOIUrl":"10.1007/s00027-024-01155-x","url":null,"abstract":"<div><p>Climate change is one of the main drivers of biodiversity decline. Rapidly changing climate in the form of warming, drying, and habitat isolation causes freshwater species to change their spatial extent, as most species have little capacity for in situ responses. However, the relative contribution of these three effects to freshwater species’ changing spatial distributions is actively debated. To shed light on this debate, we explored temperature, hydroperiod, and habitat connectivity effects on alpine pond species occupancy probabilities in the northern French Alps. We studied alpine ponds as ideal test systems because they face climate change effects more rapidly, and in more concentrated areas, than any other freshwater ecosystem. We used multispecies occupancy models with three biological groups (amphibians, macrophytes, and Odonata) to examine contrasting responses to climate change. Contrary to expectations, temperature was not the main driver of species occupancy probabilities. Instead, hydroperiod and connectivity were stronger predictors of species occupancy probabilities. Furthermore, temperature increases had the same effect on occupancy probabilities of non-alpine specialist and alpine specialist species. Nonetheless, temperature disproportionately affected a greater number of specialist species compared with non-alpine specialists. We conclude that climate change mitigation will primarily benefit a greater number of alpine specialist species than non-alpine specialists. Finally, we suggest that enhancing our understanding of freshwater hydroperiods will improve our predictions of climate change effects on freshwater species distributions.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00027-024-01155-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142890471","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":"New insight into barium toxicity in the gills of the European clam (Ruditapes decussatus): a focus on redox status, fatty acids profiles, and histological structures","authors":"Zeineb Khila,&nbsp;Wafa Trabelsi,&nbsp;Safa Bejaoui,&nbsp;Maximilien Beuret,&nbsp;Dalya Belhassen,&nbsp;Boutheina Ben Abdallah,&nbsp;Simon Devin,&nbsp;Nejla Soudani","doi":"10.1007/s00027-024-01151-1","DOIUrl":"10.1007/s00027-024-01151-1","url":null,"abstract":"<div><p>Barium (Ba) is a naturally occurring alkaline earth metal that is mined and used for industrial purposes. This earth metal can easily impact organisms commonly found in coastal zones, particularly marine bivalves, through aquatic discharges resulting from industrial activities. The aim of the present study was to assess the potential toxic effects of barium chloride (BaCl₂) on fatty acid profiling, redox status, and histopathological aspects of <i>Ruditapes decussatus</i> gills exposed to a range of concentrations (0, 20, 40, and 80 mg/L) for 5 days. Our results revealed that BaCl₂-treated clams had altered levels of saturated fatty acids, decreased content of monounsaturated fatty acids, and increased levels of polyunsaturated fatty acids. Alterations in arachidonic acid were also observed in the gills of treated specimens, accompanied by significant increases in its precursors: linoleic and α-linolenic acids. Our findings also showed changes in the levels of eicosapentaenoic and docosahexaenoic acids. These results indicated a bioaccumulation of Ba, as evidenced by a significant increase in Ba levels in BaCl₂-treated specimens. BaCl₂ exposure increased the levels of hydrogen peroxide, lipid hydroperoxide, malondialdehyde and protein carbonyl along with enzymatic (glutathione peroxidase and glutathione s-transferase) and non-enzymatic (reduced glutathione, non-protein thiols, metallothioneins, and vitamin c) antioxidants. Moreover, our data showed a decrease in ferric-reducing antioxidant power, superoxide dismutase, and catalase. The outcomes of the biochemical findings were confirmed by histopathological injuries. Our investigation underscores the significance of fatty acid composition as an early sensitive biomarker for elucidating the toxicity mechanisms of BaCl₂ in aquatic bivalves, and highlights the broader implications of BaCl₂ contamination in coastal ecosystems, emphasizing the need for monitoring and mitigation strategies. By demonstrating the link between oxidative stress and fatty acid profile disruptions, our findings provide valuable insights into the environmental impact of BaCl₂ and underscore the importance of continued research into its effects on marine life.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889469","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":"Seasonal variations in water quality and phytoplankton–bacteria interactions mediated through dissolved organic matter in New Jersey coastal waters","authors":"Shuting Liu,&nbsp;Chelsea Oti,&nbsp;Benjamin Aharoni,&nbsp;Derek J. Melendez,&nbsp;Spencer Thompson","doi":"10.1007/s00027-024-01153-z","DOIUrl":"10.1007/s00027-024-01153-z","url":null,"abstract":"<div><p>New Jersey coastal areas are experiencing eutrophication due to human-induced nutrient overloading. Algal blooms occur frequently in New Jersey coastal waters, and excessive blooms shift water quality. However, phytoplankton–bacteria interactions mediated through dissolved organic matter (DOM) have not been extensively studied in New Jersey coastal waters, especially near overburdened communities. We targeted a traditionally underrepresented township area, Keyport Harbor, as a model site to investigate seasonal variabilities of phytoplankton biomass, DOM, and bacteria biomass. Chlorophyll-<i>a</i> concentrations were significantly higher in spring–summer (bloom) than in fall–winter (nonbloom). Nitrate + nitrite and ammonium were negatively correlated with chlorophyll-<i>a</i>, and the water was nitrogen-limited during bloom time while phosphorus-limited during nonbloom time, implying that regulating nitrogen loading was key to controlling algal blooms, especially during bloom seasons. Phytoplankton–bacteria interactions were assessed by monitoring dissolved organic carbon (DOC) and bacterial abundance between bloom and nonbloom time from field and incubation studies. A significantly higher DOC, but not dissolved organic nitrogen, occurred in the bloom than nonbloom period, suggesting that phytoplankton contributed to the production of more carbon-rich than nitrogen-rich compounds. DOC fueled threefold bacterial growth in the bloom period, exceeding the temperature effect and indicating strong phytoplankton–DOM–bacteria connections. Microbial remineralization incubations showed rapid phytoplankton–DOC drawdown, and more ambient DOC drawdown and bacterial growth in the bloom than nonbloom time, further supporting the important role of phytoplankton–DOC in shaping bacteria. With water quality monitoring via chemical and biological indicators, the study aimed to understand carbon cycling better, assess anthropogenic impacts on coastal environments, and help facilitate coastal management.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00027-024-01153-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889468","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":"Structural and functional responses of lotic biofilm to abrasive sediments and P enrichment: an indoor experimental approach","authors":"Verónica Diaz-Villanueva,&nbsp;Uara Carrillo,&nbsp;Nicolás Martyniuk,&nbsp;Beatriz Modenutti","doi":"10.1007/s00027-024-01150-2","DOIUrl":"10.1007/s00027-024-01150-2","url":null,"abstract":"<div><p>Biofilms are hotspots of metabolism in streams. A common natural and anthropogenic disturbance in lotic systems is the input of nutrient-rich sediments, which may affect the stream bottom and thereby biofilms. Here, we present an indoor experiment with artificial channels to test the effect of phosphorus (P) and abrasive sediment inputs on biofilm structure. The experiment had a factorial design with four treatments: (1) without any addition (treatment C); (2) addition of abrasive sediments (treatment G); (3) phosphorus addition (treatment P); and (4) addition of abrasive sediments and phosphorus (treatment GP). Our results showed that the addition of phosphorus alone (treatment P) increased biofilm biomass (increased both chlorophyll-<i>a</i> and carbon [C] content), while the addition of sediment had a strong negative effect on biofilm biomass and elemental ratios (C:nitrogen [N] and N:P), both when added alone (treatment P) and when added with P addition (GP). The P addition treatments (P alone and GP treatments) resulted in a decrease in alkaline phosphatase activity. At the end of the experiment, we observed a shift in the primary producers: while P treatments were dominated by Cyanobacteria, both the G and C treatments were dominated by diatoms. In particular, the G treatment, where the biofilm was composed of a thin layer of diatoms, exhibited the highest photosynthetic efficiency (highest electron transport rate and photosystem II efficiency). The final balance of the input of abrasive sediments with P enrichment resulted in a young-stage biofilm with a high proportion of extracellular polymeric substances. These results highlight the effects of combined stressors since abrasive sediments even at high P levels can severely affect both the structural and physiological parameters of biofilms.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142844818","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":"Avoidance behavior of grass carp (Ctenopharyngodon idella) shoals to low-frequency sound stimulation","authors":"Yujiao Wu,&nbsp;Guoyong Liu,&nbsp;Ji Yang,&nbsp;Jiawei Xu,&nbsp;Senfan Ke,&nbsp;Dongqing Li,&nbsp;Xiaolong Chen,&nbsp;Xiaotao Shi,&nbsp;Chenyu Lin","doi":"10.1007/s00027-024-01149-9","DOIUrl":"10.1007/s00027-024-01149-9","url":null,"abstract":"<div><p>Acoustic deterrence has been proven instrumental in preventing fish invasions and safeguarding against fish ingress into hydro-turbines, with the systems often employing broadband sounds, such as boat noises or predator vocalizations. However, within these broadband sounds, the specific frequencies that elicit negative phonotaxis (avoidance behavior) in fish remain to be identified. The present study investigated the avoidance behavior of grass carp shoal in sound playback experiments conducted using pure tones within the frequency range of 100–1500 Hz and two broadband sounds. The alligator roar sounds, a known deterrent, were used as broadband sound 1, which was also manipulated to remove high-sound-pressure-level components, creating a novel broadband sound 2. Grass carp exhibited significant overt avoidance behavior and increased swimming speed in response to the 100 Hz pure tone. Under the effect of this tone, the number of avoidance responses over a 10-min experimental duration (8.14 ± 1.44 min) was significantly higher than that recorded in the control group (H = 34.929, <i>P</i> &lt; 0.05). These findings suggested that the low-frequency components in broadband sounds are essential to eliciting avoidance behaviors in fish. The present research offers novel insights into the strategic selection of sound frequencies in acoustic deterrence systems, facilitating the development of further precisely targeted and effective fish management strategies.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142826149","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":"Combined effects of fungicides and temperature affect non-target aquatic fungal assemblages","authors":"Cristiane Biasi,&nbsp;Luiz Ubiratan Hepp","doi":"10.1007/s00027-024-01148-w","DOIUrl":"10.1007/s00027-024-01148-w","url":null,"abstract":"<div><p>The extensive use of pesticides in agriculture can lead to water contamination and have adverse effects on different groups of aquatic organisms, including those that are not targeted. In this context, organisms involved in the decomposition of organic matter in terrestrial and aquatic ecosystems can be affected by these chemicals. In addition, in a climate change scenario, changes in temperature can potentiate this effect, as this variable is a modulator of biological processes. The aim of this study was to investigate the effects of acute and chronic exposure of a commercial fungicide on aquatic decomposing fungi (non-target) at different temperatures (18 °C and 22 °C). For this, two experiments were carried out: (1) acute, in which the fungi were exposed to the fungicide during the stimulation of sporulation (48 h) at both temperatures, and (2) chronic, in which the fungi were exposed to the fungicide during the period of substrate colonization (25 days) at both temperatures. The effective concentration to inhibit 50% (EC50) of sporulation rates at 22 °C was lower than at 18 °C. For both situations, fungal activity was inhibited with increasing fungicide concentrations. It was also verified that the temperature had an important role in the fungal response to stressors, since an increase in temperature potentiated the fungicide effect in the acute and chronic experiments. The results show that excessive use of fungicides, associated with an increase in temperature, can cause changes in the fungal community and their ability to reproduce.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142810849","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":"Comparative analysis of contemporary and subfossil Cladocera assemblages with respect to lake utilisation and environmental factors","authors":"István Gyulai,&nbsp;Arber Hajredini,&nbsp;Kinga Varga,&nbsp;Jázmin Jakab,&nbsp;Ángel Gabriel Vallejo-Cuzco,&nbsp;Imre Somlyai,&nbsp;István Grigorszky,&nbsp;Csaba Berta","doi":"10.1007/s00027-024-01146-y","DOIUrl":"10.1007/s00027-024-01146-y","url":null,"abstract":"<div><p>Shallow lakes hold significant ecological importance, serving as habitats for various species and functioning as carbon sinks. In this study we investigated contemporary and subfossil Cladocera assemblages of a mixed-use (nature protection, agriculture and recreation) shallow oxbow lake. We examined the effects of utilisation on species variations and how these utilisations can affect Cladocera species. A total of 36 species were identified, from which ten were only found in the contemporary assemblage, with 35 belonging to the subfossil assemblage. The subfossil assemblage showed consistently higher species richness and abundance. The highest number of species in both assemblages was found in the protected area, which also exhibited the highest number of individuals for the contemporary assemblage. The Mantel test indicated a weak correlation between the assemblages collected. Non-metric multidimensional scaling revealed a clear separation between the agriculturally utilised section and other areas based on the composition of the contemporary assemblage. Furthermore, canonical correspondence analysis identified potential associations between specific chemical and physical variables and the observed variations in species abundances. These findings highlight the impacts of utilisation types and suggest environmental factors influence Cladocera distribution and abundance.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811311","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":"Feeding ecology of a detritivorous fish in controlled flood pulse area in the Amazon revealed by stomach content and stable isotopes analyses","authors":"Izabella Cristina da Silva Penha,&nbsp;Antonio Augusto Jardim Jr.,&nbsp;Erival Gonçalves Prata,&nbsp;Lidia Brasil Seabra,&nbsp;Rafael Rodrigues Gusmão,&nbsp;Giovanna Teixeira Ferreira,&nbsp;Ana Flavia do Vale Neves Machado Costa,&nbsp;Tiago Magalhães da Silva Freitas,&nbsp;Luciano Fogaça de Assis Montag","doi":"10.1007/s00027-024-01147-x","DOIUrl":"10.1007/s00027-024-01147-x","url":null,"abstract":"<div><p>This study aimed to assess the trophic dynamics of a detritivorous species throughout various hydrological periods in a reduced flow section, Volta Grande, of the Xingu River. Specimens were collected between December 2020 and November 2021 using gill nets. Stomachs were dissected to examine their contents, and muscle tissue samples were collected for isotopic analyses of δ¹³C and δ¹⁵N. The diet across hydrological periods was analysed using permutational multivariate analysis of variance. Variation in trophic niche breadth was evaluated using permutational dispersion analysis with food importance values. Feeding intensity was evaluated using the repletion index, and its variation across periods was tested using Kruskal-Wallis. Isotopic structure across hydrological periods was evaluated through analysis of variance. Isotopic niche overlap was calculated using the corrected standard ellipse area metric. Mixed effect models were employed to estimate the contributions of basal resources assimilated by the species across periods. Our results revealed stable patterns in the diet and energy sources of the species across different hydrological periods. Given the escalating impact of human activities on natural seasonal variations in rivers, conducting detailed trophic studies and employing precise methods to reconstruct food webs and energy flow in altered aquatic ecosystems are essential. This information is crucial for guiding measures aimed at protecting and conserving these environments and the ichthyofauna reliant on them.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142811310","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":"Fine sediments produce tipping points in the taxonomic and functional structure of benthic macroinvertebrates in neotropical streams","authors":"Pedro Henrique Monteiro do Amaral,&nbsp;Marden Seabra Linares,&nbsp;Tiago Chagas de Oliveira Tourinho,&nbsp;Robert M. Hughes,&nbsp;Marcos Callisto","doi":"10.1007/s00027-024-01144-0","DOIUrl":"10.1007/s00027-024-01144-0","url":null,"abstract":"<div><p>The influence of substrate homogenization on the taxonomic structure of benthic macroinvertebrate assemblages is well known worldwide. However, understanding the response thresholds of macroinvertebrate assemblages to a fine sediment deposition gradient is rarely reported for neotropical regions. Furthermore, most studies focus on taxonomic indicators, without considering the functional aspects of benthic macroinvertebrates. Therefore, we used taxonomic and functional analyses to assess the threshold responses of macroinvertebrate assemblages to fine sediments in 40 neotropical savanna streams in the hydrological unit of the Furnas hydropower reservoir. We found that stream locations with increased fine sediment supported lower taxonomic and functional composition, negatively selecting for the functional traits of gill respiration and flattened and streamlined body shape. In contrast, integument respiration and spherical body characterized macroinvertebrates positively associated with fine sediments. We also found that taxonomic (Shannon and Simpson indices) and functional (functional richness and functional evenness) indicators were sensitive to habitat homogenization resulting from increased fine sediments. We strongly recommend that energy companies monitor hydropower basins by identifying areas with accumulations of fine sediments, using the taxonomic and functional components of macroinvertebrates in the biomonitoring of neotropical streams. This information is of critical importance for future rehabilitation efforts to avoid siltation of tropical hydropower dams. Besides intense unplanned urbanization and agriculture, the climate crisis is predicted to increase intense tropical rains and sediment transport in headwater streams. Benthic structure and functional composition are early warning signals of environmental degradation and important indicators for long-term monitoring and rehabilitation investments worldwide.</p></div>","PeriodicalId":55489,"journal":{"name":"Aquatic Sciences","volume":"87 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-11-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142736889","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}