A. Frota, V. Abilhoa, Matheus Oliveira Freitas, Rodrigo Lira Meyer, Eduardo Rios Gonçalves, F. M. Azevedo, É. A. Gubiani, W. J. Graça
Abstract: Aim Non-native fish species have been closely related to serious damage to aquatic biodiversity due to their negative effects on native fauna. We aim to report the first and alarming occurrence of the non-native catfish “jaú” Zungaro jahu in the Iguaçu River basin above the Iguaçu Falls, a high-endemism Neotropical ecoregion for fish. Methods Fish samplings were taken with a bottom gill net in the Segredo Reservoir, where they were anesthetized in benzocaine hydrochloride and fixed in formaldehyde in the field, later identified in the laboratory and housed at the Museu de História Natural do Capão da Imbuia (MHNCI). Results Our recent samplings in the Iguaçu River basin recorded one non-native individual of the catfish “jaú” Zungaro jahu in the Segredo Reservoir. Conclusions We mainly intend to alarm about the risk of expansion of the occurrence of this non-native species throughout the cascading reservoirs in the Iguaçu River where it could potentially develop serious damage to the trophic chain, predation of small-sized endemic species, and competition, especially in the sites where the endemic and endangered pimelodid “surubim-do-iguaçu” (Steindachneridion melanodermatum) maintains viable populations, currently restricted to the Lower Iguaçu River basin exhibiting recent signs of a population bottleneck.
{"title":"Here comes the large catfish “jaú” Zungaro jahu (Ihering 1898) (Teleostei, Pimelodidae): a new alarming case of fish introduction in a high-endemism Neotropical ecoregion","authors":"A. Frota, V. Abilhoa, Matheus Oliveira Freitas, Rodrigo Lira Meyer, Eduardo Rios Gonçalves, F. M. Azevedo, É. A. Gubiani, W. J. Graça","doi":"10.1590/s2179-975x4322","DOIUrl":"https://doi.org/10.1590/s2179-975x4322","url":null,"abstract":"Abstract: Aim Non-native fish species have been closely related to serious damage to aquatic biodiversity due to their negative effects on native fauna. We aim to report the first and alarming occurrence of the non-native catfish “jaú” Zungaro jahu in the Iguaçu River basin above the Iguaçu Falls, a high-endemism Neotropical ecoregion for fish. Methods Fish samplings were taken with a bottom gill net in the Segredo Reservoir, where they were anesthetized in benzocaine hydrochloride and fixed in formaldehyde in the field, later identified in the laboratory and housed at the Museu de História Natural do Capão da Imbuia (MHNCI). Results Our recent samplings in the Iguaçu River basin recorded one non-native individual of the catfish “jaú” Zungaro jahu in the Segredo Reservoir. Conclusions We mainly intend to alarm about the risk of expansion of the occurrence of this non-native species throughout the cascading reservoirs in the Iguaçu River where it could potentially develop serious damage to the trophic chain, predation of small-sized endemic species, and competition, especially in the sites where the endemic and endangered pimelodid “surubim-do-iguaçu” (Steindachneridion melanodermatum) maintains viable populations, currently restricted to the Lower Iguaçu River basin exhibiting recent signs of a population bottleneck.","PeriodicalId":38854,"journal":{"name":"Acta Limnologica Brasiliensia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67863820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ana Paula dos Santos Bertoncin, R. P. Tramonte, G. D. Pinha, Camila Gentilin-Avanci, M. Oliveira, R. Mormul
Abstract Aim Wetland areas have high environmental complexity and support high biodiversity. Therefore, global efforts are required to preserve these areas. Here, we show the results of three decades of monitoring programs regarding macroinvertebrate species from the upper Paraná River floodplain, which is an important wetland conservation area in the neotropics. Methods We searched the literature from 1990 to 2020 and selected studies that addressed questions related to benthic or macrophyte-associated macroinvertebrates in the study area. Results We retained 92 articles that matched the criteria. We noticed that the number of publications increased after 2009, and most studies were related to lentic environments. Sediment was the most studied substrate, showing the highest taxa record and diversity, followed by aquatic macrophytes. We found records of 517 taxa, from which the families Chironomidae, Cyprididae, and Naididae presented the highest taxonomic richness. The taxa richness observed in our study was lower than the bootstrap richness estimated. Conclusions The lack of signs of curve stabilisation through time for both observed and estimated taxa richness could indicate the macroinvertebrate richness from the upper Paraná River floodplain must be underestimated. In this way, once most of the studies reported results related to long-term ecological research, we argue for the continuity of such studies in floodplains as a powerful tool to assess biodiversity, which can provide useful data for the creation of conservation strategies that enhance the maintenance of biodiversity in such areas.
{"title":"On the significance of wetlands: three decades of aquatic macroinvertebrate monitoring programs in a Neotropical floodplain","authors":"Ana Paula dos Santos Bertoncin, R. P. Tramonte, G. D. Pinha, Camila Gentilin-Avanci, M. Oliveira, R. Mormul","doi":"10.1590/s2179-975x4721","DOIUrl":"https://doi.org/10.1590/s2179-975x4721","url":null,"abstract":"Abstract Aim Wetland areas have high environmental complexity and support high biodiversity. Therefore, global efforts are required to preserve these areas. Here, we show the results of three decades of monitoring programs regarding macroinvertebrate species from the upper Paraná River floodplain, which is an important wetland conservation area in the neotropics. Methods We searched the literature from 1990 to 2020 and selected studies that addressed questions related to benthic or macrophyte-associated macroinvertebrates in the study area. Results We retained 92 articles that matched the criteria. We noticed that the number of publications increased after 2009, and most studies were related to lentic environments. Sediment was the most studied substrate, showing the highest taxa record and diversity, followed by aquatic macrophytes. We found records of 517 taxa, from which the families Chironomidae, Cyprididae, and Naididae presented the highest taxonomic richness. The taxa richness observed in our study was lower than the bootstrap richness estimated. Conclusions The lack of signs of curve stabilisation through time for both observed and estimated taxa richness could indicate the macroinvertebrate richness from the upper Paraná River floodplain must be underestimated. In this way, once most of the studies reported results related to long-term ecological research, we argue for the continuity of such studies in floodplains as a powerful tool to assess biodiversity, which can provide useful data for the creation of conservation strategies that enhance the maintenance of biodiversity in such areas.","PeriodicalId":38854,"journal":{"name":"Acta Limnologica Brasiliensia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67865148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jéssica Andriotti, M. M. Petrucio, Aurea Luiza Lemes da Silva
Abstract: Aim In this study, we examined the effects of non-native leaf litter on the functioning of an Atlantic Forest stream ecosystem. Methods Were tested two predictions: (i) Leaf litter from the native trees with high nutritional quality will have higher decomposer’s activity and faster litter decomposition; (ii) Given the presence of anti-grazing defenses, we also hypothesized that non-native leaf litter would be colonized by fewer invertebrates and that native species would be more species-rich. For this, in a forest stream (Florianópolis, SC, Brazil) we conduct the experiment to understand the decomposition and biological colonization of leaf litter among two non-native (Eucalyptus sp. and Pinus radiata D. Don) and two native trees (Ficus eximia Schott and Alchornea triplinervia (Spreng) Mull. Arg). Results Our predictions were partially corroborated. The percentage of dry mass remaining was lower for the native leaf litter. The invertebrate abundance and richness, and functional feeding groups vary between native and non-native leaf litter. Invertebrate abundance was higher in non-native Eucalyptus detritus, largely due to the high larval abundance of Chironomidae (Diptera). Conclusions Our results indicate that the presence of non-native riparian species can modify leaf decomposition and aquatic invertebrate communities in subtropical streams, with potential consequences for ecosystem functioning.
{"title":"Exploring the impacts of non-native leaf litter on invertebrate community and leaf decomposition in a Atlantic Forest stream","authors":"Jéssica Andriotti, M. M. Petrucio, Aurea Luiza Lemes da Silva","doi":"10.1590/s2179-975x7121","DOIUrl":"https://doi.org/10.1590/s2179-975x7121","url":null,"abstract":"Abstract: Aim In this study, we examined the effects of non-native leaf litter on the functioning of an Atlantic Forest stream ecosystem. Methods Were tested two predictions: (i) Leaf litter from the native trees with high nutritional quality will have higher decomposer’s activity and faster litter decomposition; (ii) Given the presence of anti-grazing defenses, we also hypothesized that non-native leaf litter would be colonized by fewer invertebrates and that native species would be more species-rich. For this, in a forest stream (Florianópolis, SC, Brazil) we conduct the experiment to understand the decomposition and biological colonization of leaf litter among two non-native (Eucalyptus sp. and Pinus radiata D. Don) and two native trees (Ficus eximia Schott and Alchornea triplinervia (Spreng) Mull. Arg). Results Our predictions were partially corroborated. The percentage of dry mass remaining was lower for the native leaf litter. The invertebrate abundance and richness, and functional feeding groups vary between native and non-native leaf litter. Invertebrate abundance was higher in non-native Eucalyptus detritus, largely due to the high larval abundance of Chironomidae (Diptera). Conclusions Our results indicate that the presence of non-native riparian species can modify leaf decomposition and aquatic invertebrate communities in subtropical streams, with potential consequences for ecosystem functioning.","PeriodicalId":38854,"journal":{"name":"Acta Limnologica Brasiliensia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67870108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Julio César Marín-Leal, Neil José Rincón-Miquilena, L. Díaz-Borrego, María Carolina Pire-Sierra
Abstract: Aim In this article the acute ecotoxicological effects of Cr(III), Cr(VI), Cd(II) and V(V) on ciliated protozoa isolated from Lake Maracaibo were evaluated, by estimating of the LC50 for an exposure time of 1-h and observations every 5 min. Methods Isolations and cultures of ciliated protozoa were made from surface water samples to then carry out toxicity essays under static and controlled conditions, identifying cell immobility (death) as the endpoint. Results The response of the ciliated protozoa made it possible to unequivocally determine the acute toxicity in presence of potentially toxic elements (PTE), with variable mortalities depending on the gender, the element tested and its concentration. The results obtained with Euplotes sp. indicate that protozoan is a sensitive biomonitor indicated for the biomonitoring of PTE contamination in Lake Maracaibo. Conclusions The use of shorter exposure periods offers opportunities to show early toxicity effects on natural populations and to act in a timely manner (early warning systems) in contamination events by PTEs, as well as the development of sensitive and rapid biomonitoring methods for detection of these elements in the environment.
{"title":"Acute toxicity of potentially toxic elements on ciliated protozoa from Lake Maracaibo (Venezuela)","authors":"Julio César Marín-Leal, Neil José Rincón-Miquilena, L. Díaz-Borrego, María Carolina Pire-Sierra","doi":"10.1590/s2179-975x7821","DOIUrl":"https://doi.org/10.1590/s2179-975x7821","url":null,"abstract":"Abstract: Aim In this article the acute ecotoxicological effects of Cr(III), Cr(VI), Cd(II) and V(V) on ciliated protozoa isolated from Lake Maracaibo were evaluated, by estimating of the LC50 for an exposure time of 1-h and observations every 5 min. Methods Isolations and cultures of ciliated protozoa were made from surface water samples to then carry out toxicity essays under static and controlled conditions, identifying cell immobility (death) as the endpoint. Results The response of the ciliated protozoa made it possible to unequivocally determine the acute toxicity in presence of potentially toxic elements (PTE), with variable mortalities depending on the gender, the element tested and its concentration. The results obtained with Euplotes sp. indicate that protozoan is a sensitive biomonitor indicated for the biomonitoring of PTE contamination in Lake Maracaibo. Conclusions The use of shorter exposure periods offers opportunities to show early toxicity effects on natural populations and to act in a timely manner (early warning systems) in contamination events by PTEs, as well as the development of sensitive and rapid biomonitoring methods for detection of these elements in the environment.","PeriodicalId":38854,"journal":{"name":"Acta Limnologica Brasiliensia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67871087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Aim Determine the length-weight relationship (LWR), the period of reproduction, and evaluate the variation of the condition factor (K) of Hypostomus affinis from two coastal drainages in southeastern Brazil, assessing the influence of the rainfall on these biological aspects. Methods fish were sampled quarterly between April 2008 and April 2010 in tributaries of the Doce River basin (DRB) and the Paraíba do Sul River basin (PSRB). Specimens were caught using gillnets. LWR parameters were assessed by location and sex through a t-test. We used the frequency of mature specimens (FM) to evaluate the breeding period. Both FM and K values were assessed by a sinusoidal equation. Results A total of 492 specimens was captured, of which 128 were from the Doce River basin (DRB) and 364 from the Paraíba do Sul River basin (PSRB). In both areas, specimens showed a negative allometric growth type. We collected mature specimens along the studied period in both drainages, with the highest frequency observed at the beginning of the rainy season. We found a positive correlation between the rate of matures and the local rainfall variation. The condition factor (K) was lower for specimens from DRB and did not show a cyclic trend. On the other hand, we observed a cyclic chance of the K values for the individual from the PSRB, peaking in the transitional dry-rainy period. However, it was not possible to correlate it to the rainfall variation. Conclusions LWR parameters of H. affinis were consistent with data already available in the literature. The rainfall may influence the FM but not the K values. In this case, biological characteristics such as reproduction and (or) feeding may be jointly driving a discrete variation of K values. The reduction in K values in the rainy periods suggests a remarkable energetic cost for the reproductive process. In short, our results help us to understand the life cycle of a fish species within a highly modified environment, especially by dams.
摘要目的确定巴西东南部两个沿海流域affinis的长重关系(LWR)、繁殖周期和条件因子(K)的变化，评估降雨对这些生物学方面的影响。方法2008年4月至2010年4月，在多塞河流域(DRB)和Paraíba南多塞河流域(PSRB)的支流每季进行鱼类取样。标本用刺网捕获。LWR参数通过t检验按地点和性别进行评估。我们用成熟标本的频率(FM)来评价繁殖期。FM和K值均由正弦方程评估。结果共捕获动物492只，其中Doce河流域128只，Paraíba do Sul河流域364只。在这两个地区，标本均呈负异速生长型。在研究期间，我们收集了两个流域的成熟标本，在雨季开始时观察到的频率最高。我们发现成熟率与当地降雨量变化呈正相关。DRB标本的条件因子(K)较低，且不呈循环趋势。另一方面，我们观察到PSRB个体K值的周期性机会，在过渡干雨期达到峰值。然而，不可能将其与降雨变化联系起来。结论亲和豚鼠LWR参数与文献资料一致。降雨对FM有影响，但对K值没有影响。在这种情况下，繁殖和(或)喂养等生物学特征可能共同驱动K值的离散变化。雨季钾值的降低表明生殖过程的能量消耗显著。简而言之，我们的研究结果帮助我们了解了在高度改变的环境中，特别是在水坝的影响下，鱼类的生命周期。
{"title":"Biological aspects of Hypostomus affinis (Siluriformes: Loricariidae) in Brazilian coastal rivers","authors":"T. M. Freitas, G. N. Salvador","doi":"10.1590/s2179-975x1121","DOIUrl":"https://doi.org/10.1590/s2179-975x1121","url":null,"abstract":"Abstract Aim Determine the length-weight relationship (LWR), the period of reproduction, and evaluate the variation of the condition factor (K) of Hypostomus affinis from two coastal drainages in southeastern Brazil, assessing the influence of the rainfall on these biological aspects. Methods fish were sampled quarterly between April 2008 and April 2010 in tributaries of the Doce River basin (DRB) and the Paraíba do Sul River basin (PSRB). Specimens were caught using gillnets. LWR parameters were assessed by location and sex through a t-test. We used the frequency of mature specimens (FM) to evaluate the breeding period. Both FM and K values were assessed by a sinusoidal equation. Results A total of 492 specimens was captured, of which 128 were from the Doce River basin (DRB) and 364 from the Paraíba do Sul River basin (PSRB). In both areas, specimens showed a negative allometric growth type. We collected mature specimens along the studied period in both drainages, with the highest frequency observed at the beginning of the rainy season. We found a positive correlation between the rate of matures and the local rainfall variation. The condition factor (K) was lower for specimens from DRB and did not show a cyclic trend. On the other hand, we observed a cyclic chance of the K values for the individual from the PSRB, peaking in the transitional dry-rainy period. However, it was not possible to correlate it to the rainfall variation. Conclusions LWR parameters of H. affinis were consistent with data already available in the literature. The rainfall may influence the FM but not the K values. In this case, biological characteristics such as reproduction and (or) feeding may be jointly driving a discrete variation of K values. The reduction in K values in the rainy periods suggests a remarkable energetic cost for the reproductive process. In short, our results help us to understand the life cycle of a fish species within a highly modified environment, especially by dams.","PeriodicalId":38854,"journal":{"name":"Acta Limnologica Brasiliensia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67824174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract: Aim This paper aims to make inferences about the quality of watercourses, and its conservation, through the habitat suitability model of Campylocia burmeisteri. Methods The modelling demanded twenty-five occurrence records, twelve as training data and thirteen as test data. The study area consisted of a 300 kilometers buffer zone applied over the occurrence records. We used a set of twenty-two environmental layers as ambient data, as follows: 19 bioclimatic variables available on Worldclim; altitude from Worldclim; slope, obtained through geoprocessing in ArcGis v10.3 with altitude variable; and drainage density provide by Ambdata. These layers were transformed by the use of fuzzy logic to represent a continuous variation, and thus the most significant data was select after a PCA. To indicated to new surveys areas, we define locations with significant occurrence probability and distant from occurrence points. And, lastly, we observed the environmental integrity to analyze the potential watercourse quality, by using satellite images, in a buffer zone of ten kilometers from Espinhaço Range Biosphere Reserve. Results The chosen regions with the highest occurrence probability, which account for 9 new survey areas, are concentrated in interfluvial areas and near conservation units. We performed an analysis focused on the region of the Espinhaço Range Biosphere Reserve and delimited seven areas that presented good habitat suitability. The region was observed using satellite images, and five of the areas presented high ecological integrity. Two areas showed impacts from mining activity. Conclusions The distribution pattern corroborates the features of the species as a bioindicator of good water quality. It is estimated that this methodology can be adapted and applied to other bioindicators. The areas where headwaters and low-order tributaries are present must be conserved, because they are fundamental for maintaining the quality within the respective watershed.
{"title":"A habitat suitability modeling of Campylocia burmeisteri (EPHEMEROPTERA: Euthyplociidae) (Hagen, 1888) and its application on freshwater resources conservation","authors":"Alison Bramuth, H. Paprocki","doi":"10.1590/s2179-975x9719","DOIUrl":"https://doi.org/10.1590/s2179-975x9719","url":null,"abstract":"Abstract: Aim This paper aims to make inferences about the quality of watercourses, and its conservation, through the habitat suitability model of Campylocia burmeisteri. Methods The modelling demanded twenty-five occurrence records, twelve as training data and thirteen as test data. The study area consisted of a 300 kilometers buffer zone applied over the occurrence records. We used a set of twenty-two environmental layers as ambient data, as follows: 19 bioclimatic variables available on Worldclim; altitude from Worldclim; slope, obtained through geoprocessing in ArcGis v10.3 with altitude variable; and drainage density provide by Ambdata. These layers were transformed by the use of fuzzy logic to represent a continuous variation, and thus the most significant data was select after a PCA. To indicated to new surveys areas, we define locations with significant occurrence probability and distant from occurrence points. And, lastly, we observed the environmental integrity to analyze the potential watercourse quality, by using satellite images, in a buffer zone of ten kilometers from Espinhaço Range Biosphere Reserve. Results The chosen regions with the highest occurrence probability, which account for 9 new survey areas, are concentrated in interfluvial areas and near conservation units. We performed an analysis focused on the region of the Espinhaço Range Biosphere Reserve and delimited seven areas that presented good habitat suitability. The region was observed using satellite images, and five of the areas presented high ecological integrity. Two areas showed impacts from mining activity. Conclusions The distribution pattern corroborates the features of the species as a bioindicator of good water quality. It is estimated that this methodology can be adapted and applied to other bioindicators. The areas where headwaters and low-order tributaries are present must be conserved, because they are fundamental for maintaining the quality within the respective watershed.","PeriodicalId":38854,"journal":{"name":"Acta Limnologica Brasiliensia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67873177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. B. Prado, Gustavo Menezes Silva Damasceno, F. G. Aquino
Abstract: Aim Riparian zones are highly complex ecosystems, located on the banks of water bodies, with a fundamental role in maintaining biodiversity and ecosystem services (ES). This study aimed to systematize the knowledge about studies on ES in riparian zones, emphasizing methodological aspects and pointing out gaps and opportunities to reinforce their importance. Methods The study was carried out based on literature review data over a period of 21 years (2000-2020), using Scopus and Web of Science databases. In the first stage, aspects of bibliometrics were analyzed, as well as the countries that published the most on the subject. In the second stage, the methodological aspects were analyzed (with emphasis on the integrated analysis of multiple ES, which looked at the landscape, adopted multiscale or carried out economic valuation). Results From 2000 to 2020, 6,969 publications were obtained from Scopus and 16,498 from Web of Science, applying the search terms riparian buffer or similar and 371 publications were obtained from Scopus and 1,512 from Web of Science applying ecosystem service and riparian zones or similar terms, with the USA being the country that most published about ES in riparian zones. From a total of 219 publications selected, the ES category most studied in riparian zones was Regulation (65%), followed by Support (16%), Provision (8%) and Cultural (2%). Publications that studied three or more ES corresponded to 9% of the analyzed publications. Approximately 10% of publications used methodological approaches with multiple ESs in an integrated way. Less than 10% of publications focused on economic valuation. Gaps and opportunities were identified concerning the relevance and methods for evaluating and valuing ESs in riparian zones. Conclusions Few studies used methodological approaches integrating different ES. That calls attention to the need to carry out more studies that analyze ES in riparian zones using an integrated and multiscale approach because that is how the components of the ecosystem interact and provide joint responses that may assist in decision making.
摘要/ Abstract摘要:河岸带是高度复杂的生态系统，位于水体的岸边，在维持生物多样性和生态系统服务(ES)方面具有重要作用。本研究旨在系统化关于河岸带生态系统研究的知识，强调方法方面，并指出差距和机会，以加强其重要性。方法采用Scopus和Web of Science数据库，检索2000-2020年21年的文献资料。在第一阶段，分析了文献计量学的各个方面，以及在该主题上发表最多文章的国家。在第二阶段，对方法方面进行了分析(重点是对多个ES的综合分析，这些ES着眼于景观，采用多尺度或进行经济评估)。结果2000 - 2020年，Scopus检索到以“河岸缓冲区”或“类似”为检索词的论文共6969篇，Web of Science检索到以“河岸缓冲区”或“类似”为检索词的论文共16498篇;Scopus检索到生态系统服务和“河岸带”或“类似”为检索词的论文共371篇，Web of Science检索到以“河岸带”为检索词的论文共1512篇。在选定的219份出版物中，在河岸带研究最多的ES类别是《法规》(65%)，其次是《支持》(16%)、《规定》(8%)和《文化》(2%)。研究三个或更多ES的出版物占分析出版物的9%。大约10%的出版物以综合的方式使用了包含多个ESs的方法学方法。不到10%的出版物关注经济估值。在评估和评价河岸带生态环境的相关性和方法方面，确定了差距和机会。结论很少有研究采用综合不同ES的方法学方法。这引起了人们的注意，需要开展更多的研究，使用综合和多尺度的方法来分析河岸地带的生态系统，因为这是生态系统组成部分相互作用的方式，并提供可能有助于决策的联合响应。
{"title":"Overview of studies on ecosystem services in riparian zones: a systematic review","authors":"R. B. Prado, Gustavo Menezes Silva Damasceno, F. G. Aquino","doi":"10.1590/s2179-975x1822","DOIUrl":"https://doi.org/10.1590/s2179-975x1822","url":null,"abstract":"Abstract: Aim Riparian zones are highly complex ecosystems, located on the banks of water bodies, with a fundamental role in maintaining biodiversity and ecosystem services (ES). This study aimed to systematize the knowledge about studies on ES in riparian zones, emphasizing methodological aspects and pointing out gaps and opportunities to reinforce their importance. Methods The study was carried out based on literature review data over a period of 21 years (2000-2020), using Scopus and Web of Science databases. In the first stage, aspects of bibliometrics were analyzed, as well as the countries that published the most on the subject. In the second stage, the methodological aspects were analyzed (with emphasis on the integrated analysis of multiple ES, which looked at the landscape, adopted multiscale or carried out economic valuation). Results From 2000 to 2020, 6,969 publications were obtained from Scopus and 16,498 from Web of Science, applying the search terms riparian buffer or similar and 371 publications were obtained from Scopus and 1,512 from Web of Science applying ecosystem service and riparian zones or similar terms, with the USA being the country that most published about ES in riparian zones. From a total of 219 publications selected, the ES category most studied in riparian zones was Regulation (65%), followed by Support (16%), Provision (8%) and Cultural (2%). Publications that studied three or more ES corresponded to 9% of the analyzed publications. Approximately 10% of publications used methodological approaches with multiple ESs in an integrated way. Less than 10% of publications focused on economic valuation. Gaps and opportunities were identified concerning the relevance and methods for evaluating and valuing ESs in riparian zones. Conclusions Few studies used methodological approaches integrating different ES. That calls attention to the need to carry out more studies that analyze ES in riparian zones using an integrated and multiscale approach because that is how the components of the ecosystem interact and provide joint responses that may assist in decision making.","PeriodicalId":38854,"journal":{"name":"Acta Limnologica Brasiliensia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67827238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Gisele Pires Pelizari, Ariane Almeida Vaz, D. Butturi-Gomes, W. Smith
Abstract Aim We evaluated the leaf decomposition in a first order stream of the exotic Eucalyptus grandis and two native species Lithraea molleoides and Maytenus aquifolium common riparian trees in a tropical forest. Besides seasonal effects on leaf decomposition of the three species were evaluated. Methods The dried leaves were incubated in litter bags” of 20 x 20 cm with 10 mm of mesh opening in two different treatments and at two times of the year (dry and rainy): i) 48 “litter bags” containing 4 g of leaves, being 24 “litter bags” with leaves of L. molleoides and 24 with E. grandis and ii) 48 “litter bags” containing 4 g of leaves, being 24 “litter bags” with of M. aquifolium and 24 with leaves of E. grandis. After 2, 7, 14, 21, 28 and 60 days of immersion, randomly removed four “litter bags” of each species to carry out the analyzes. Results The weight loss in the first two days was between 20% and 40% in both experiments and in both seasons of the year. Leaf decomposition was higher in L. molleoides (k=0.0062 ± 0.0002 day-1) than in E. grandis (k=0.0039 ± 0.0005 day-1) in the dry season and higher in L. molleoides (k=0.0185 ± 0.0002 day-1) than E. grandis (k=0.0164 ± 0.0003 day-1) in the rainy season. In the second experiment the decomposition rates were higher in M. aquifolium (k=0.0151 ± 0.0009 day-1) than E. grandis (k=0.0149 ± 0.0006 day-1) in the dry season and higher in M. aquifolium (k=0.0174 ± 0.0001 day-1) than E. grandis (k=0.0164 ± 0.0002 day-1) in the rainy season. Besides, the results indicate that there is an effect of both the dry and rainy season and the native or exotic species on the decomposition rates. Conclusions Our findings indicate that, the seasons are likely to influence leaf decomposition, and future studies should consider seasonality. Furthermore, the exotic species had a lower decomposition rate compared to native species, which reinforces that the replacement of native riparian vegetation by exotic species such as eucalyptus can interfere on the quality of allochthonous resources and on the cycling of nutrients in neotropical streams.
{"title":"Leaf breakdown in a tropical stream: comparison between the exotic Eucalyptus grandis and two native species","authors":"Gisele Pires Pelizari, Ariane Almeida Vaz, D. Butturi-Gomes, W. Smith","doi":"10.1590/s2179-975x2321","DOIUrl":"https://doi.org/10.1590/s2179-975x2321","url":null,"abstract":"Abstract Aim We evaluated the leaf decomposition in a first order stream of the exotic Eucalyptus grandis and two native species Lithraea molleoides and Maytenus aquifolium common riparian trees in a tropical forest. Besides seasonal effects on leaf decomposition of the three species were evaluated. Methods The dried leaves were incubated in litter bags” of 20 x 20 cm with 10 mm of mesh opening in two different treatments and at two times of the year (dry and rainy): i) 48 “litter bags” containing 4 g of leaves, being 24 “litter bags” with leaves of L. molleoides and 24 with E. grandis and ii) 48 “litter bags” containing 4 g of leaves, being 24 “litter bags” with of M. aquifolium and 24 with leaves of E. grandis. After 2, 7, 14, 21, 28 and 60 days of immersion, randomly removed four “litter bags” of each species to carry out the analyzes. Results The weight loss in the first two days was between 20% and 40% in both experiments and in both seasons of the year. Leaf decomposition was higher in L. molleoides (k=0.0062 ± 0.0002 day-1) than in E. grandis (k=0.0039 ± 0.0005 day-1) in the dry season and higher in L. molleoides (k=0.0185 ± 0.0002 day-1) than E. grandis (k=0.0164 ± 0.0003 day-1) in the rainy season. In the second experiment the decomposition rates were higher in M. aquifolium (k=0.0151 ± 0.0009 day-1) than E. grandis (k=0.0149 ± 0.0006 day-1) in the dry season and higher in M. aquifolium (k=0.0174 ± 0.0001 day-1) than E. grandis (k=0.0164 ± 0.0002 day-1) in the rainy season. Besides, the results indicate that there is an effect of both the dry and rainy season and the native or exotic species on the decomposition rates. Conclusions Our findings indicate that, the seasons are likely to influence leaf decomposition, and future studies should consider seasonality. Furthermore, the exotic species had a lower decomposition rate compared to native species, which reinforces that the replacement of native riparian vegetation by exotic species such as eucalyptus can interfere on the quality of allochthonous resources and on the cycling of nutrients in neotropical streams.","PeriodicalId":38854,"journal":{"name":"Acta Limnologica Brasiliensia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67852582","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yemna Gomes da Silva, Gabriela Silva Sampaio, Beatriz Rodrigues D’Oliveira Ramos, Yasmin de Góes Cohn Freitas, L. Nascimento, C. Branco, V. Miranda
Abstract: Aim The free-living protists testate amoebae are recognized as being bioindicators, able to reveal environmental alteration via remodifying richness, diversity and abundance of species. To assess the scientific production on the use of testate amoebae as bioindicators, a scientometric analysis was undertaken from 1960 to 2020. Methods The sourcing of scientific articles derived from Google Academic, Scielo, Science Direct and Online Library research platforms. All selected papers were factored according to chronology, journal of publication, country, authors’ affiliation, whether the study was empirical or experimentation, if it included solely testate amoebae or other groups of organisms, and aspects of the environment. Results A total of 215 papers from ninety-two journals revealed a notable increase in publication numbers over the last decades. The two journals that most published data on this theme were Microbial Ecology and Ecological Indicators. Whilst the largest number of papers was published in the European Continent, the countries that most contributed to the subject were Canada in the temperate region and Brazil in the tropics. Edward A.D. Mitchell published the largest number of studies and regarding institutions the Franche-Comté University. The majority of papers that associated testaceans as bioindicators were empirical, conducted with Thecamoebian inhabiting moss and as such, dissociated from other groups. Conclusions Despite a suggested uptick in research of testaceans as bioindicators, our results indicate a concentration of studies to limited regions of the globe. In another aspect, a great number of studies assess testaceans’ community as-a-whole, showing a shortage of in-depth knowledge into species and functional groups. Therefore, our survey points to a wide variety of aquatic ecosystems devoid of study matter, indicating the need to foster the research on testate amoeba's role as bioindicators especially in the tropical regions.
{"title":"Testate amoebae (Amorphea, Amoebozoa, Cercozoa) as bioindicators: a scientometric review","authors":"Yemna Gomes da Silva, Gabriela Silva Sampaio, Beatriz Rodrigues D’Oliveira Ramos, Yasmin de Góes Cohn Freitas, L. Nascimento, C. Branco, V. Miranda","doi":"10.1590/s2179-975x0722","DOIUrl":"https://doi.org/10.1590/s2179-975x0722","url":null,"abstract":"Abstract: Aim The free-living protists testate amoebae are recognized as being bioindicators, able to reveal environmental alteration via remodifying richness, diversity and abundance of species. To assess the scientific production on the use of testate amoebae as bioindicators, a scientometric analysis was undertaken from 1960 to 2020. Methods The sourcing of scientific articles derived from Google Academic, Scielo, Science Direct and Online Library research platforms. All selected papers were factored according to chronology, journal of publication, country, authors’ affiliation, whether the study was empirical or experimentation, if it included solely testate amoebae or other groups of organisms, and aspects of the environment. Results A total of 215 papers from ninety-two journals revealed a notable increase in publication numbers over the last decades. The two journals that most published data on this theme were Microbial Ecology and Ecological Indicators. Whilst the largest number of papers was published in the European Continent, the countries that most contributed to the subject were Canada in the temperate region and Brazil in the tropics. Edward A.D. Mitchell published the largest number of studies and regarding institutions the Franche-Comté University. The majority of papers that associated testaceans as bioindicators were empirical, conducted with Thecamoebian inhabiting moss and as such, dissociated from other groups. Conclusions Despite a suggested uptick in research of testaceans as bioindicators, our results indicate a concentration of studies to limited regions of the globe. In another aspect, a great number of studies assess testaceans’ community as-a-whole, showing a shortage of in-depth knowledge into species and functional groups. Therefore, our survey points to a wide variety of aquatic ecosystems devoid of study matter, indicating the need to foster the research on testate amoeba's role as bioindicators especially in the tropical regions.","PeriodicalId":38854,"journal":{"name":"Acta Limnologica Brasiliensia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67822939","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Carlos A. Rivera, A. Zapata, William Villamil, Nubia León-López
Abstract: Aim Monitoring the trophic state of reservoirs requires indices that provide a quick report of the ecosystem to decision makers. This study aimed to develop a system of trophic status indicators for tropical mountain reservoirs using phytoplankton genera. Methods Between 2004 and 2010, four reservoirs for water supply in Bogotá (Colombia), which have different trophic statuses and hydraulic management, were monitored. Samples were collected for the analysis of physical and chemical variables and phytoplankton community. Through multivariate analysis, the significance of the relationships between environmental variables and phytoplankton species and genera was established. Subsequently, trophic indices were proposed as relevant variables. The global trophic index was calculated as the sum of the partial indices. Results Analysis of the main components showed that reservoirs varied chemically depending on trophic status. Phytoplankton were composed of 63 genera, 59% of which were present in the four reservoirs. Although the physical characteristics of water, such as temperature and total solids content, explained a large part of the variation in the genera, a significant relationship between the genera and variables related to trophic state was observed in each reservoir. The multivariate analyses grouping the data by genera showed a behavior similar to the analysis using information at the species level. Plankton indices of trophic state were developed for phosphorus (TP), total Kjeldahl nitrogen (TKN), total organic carbon (TOC), and Secchi disk (SD) using data grouped by genera. The indices were significantly correlated with the values of each variable in each reservoir. Linear regression models showed a significant prediction of chlorophyll-a using TP, TKN, and SD indices in the three reservoirs with the highest trophic level. In addition, the global index showed a significant relationship with variables related to the trophic state. Conclusions Phytoplankton data at the genus level can be used to assess trophic status. The models for SD, TP, and TKN could be used as indicators of the trophic status of the studied reservoirs.
{"title":"Trophic assessment of four tropical reservoirs using phytoplankton genera","authors":"Carlos A. Rivera, A. Zapata, William Villamil, Nubia León-López","doi":"10.1590/s2179-975x11820","DOIUrl":"https://doi.org/10.1590/s2179-975x11820","url":null,"abstract":"Abstract: Aim Monitoring the trophic state of reservoirs requires indices that provide a quick report of the ecosystem to decision makers. This study aimed to develop a system of trophic status indicators for tropical mountain reservoirs using phytoplankton genera. Methods Between 2004 and 2010, four reservoirs for water supply in Bogotá (Colombia), which have different trophic statuses and hydraulic management, were monitored. Samples were collected for the analysis of physical and chemical variables and phytoplankton community. Through multivariate analysis, the significance of the relationships between environmental variables and phytoplankton species and genera was established. Subsequently, trophic indices were proposed as relevant variables. The global trophic index was calculated as the sum of the partial indices. Results Analysis of the main components showed that reservoirs varied chemically depending on trophic status. Phytoplankton were composed of 63 genera, 59% of which were present in the four reservoirs. Although the physical characteristics of water, such as temperature and total solids content, explained a large part of the variation in the genera, a significant relationship between the genera and variables related to trophic state was observed in each reservoir. The multivariate analyses grouping the data by genera showed a behavior similar to the analysis using information at the species level. Plankton indices of trophic state were developed for phosphorus (TP), total Kjeldahl nitrogen (TKN), total organic carbon (TOC), and Secchi disk (SD) using data grouped by genera. The indices were significantly correlated with the values of each variable in each reservoir. Linear regression models showed a significant prediction of chlorophyll-a using TP, TKN, and SD indices in the three reservoirs with the highest trophic level. In addition, the global index showed a significant relationship with variables related to the trophic state. Conclusions Phytoplankton data at the genus level can be used to assess trophic status. The models for SD, TP, and TKN could be used as indicators of the trophic status of the studied reservoirs.","PeriodicalId":38854,"journal":{"name":"Acta Limnologica Brasiliensia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67823915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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