Limnetica最新文献_第6页

Littoral areas of Amazonian floodplain lakes: a biological reserve to biodiversity loss 亚马逊河漫滩湖泊沿岸地区:生物多样性丧失的生物保护区

IF 1.4 4区环境科学与生态学

Limnetica Pub Date : 2022-01-01 DOI: 10.23818/limn.42.07

Jhon C. Donato-R., Santiago R. Duque

引用次数: 0

Multiple-stressors effects on Iberian freshwaters: A review of current knowledge and future research priorities 多重压力源对伊比利亚淡水的影响:当前知识和未来研究重点的回顾

IF 1.4 4区环境科学与生态学

Limnetica Pub Date : 2022-01-01 DOI: 10.23818/limn.41.15

C. Gutiérrez‐Cánovas, Rebeca Arias-Real, D. Bruno, Marco J. Cabrerizo, J. M. González-Olalla, Félix Picazo, F. Romero, D. Sánchez‐Fernández, Susana Pallarés

{"title":"Multiple-stressors effects on Iberian freshwaters: A review of current knowledge and future research priorities","authors":"C. Gutiérrez‐Cánovas, Rebeca Arias-Real, D. Bruno, Marco J. Cabrerizo, J. M. González-Olalla, Félix Picazo, F. Romero, D. Sánchez‐Fernández, Susana Pallarés","doi":"10.23818/limn.41.15","DOIUrl":"https://doi.org/10.23818/limn.41.15","url":null,"abstract":"Multiple-stressors effects on Iberian freshwaters: A review of current knowledge and future research priorities Freshwater ecosystems are exposed to an increasing number of stressors, challenging their biomonitoring and management. Despite recent advances in multiple-stressor research, regional-scale assessments in areas with high freshwater biodiversity and increasing anthropogenic pressure are urgently needed. We reviewed 61 studies focused on freshwater individuals, populations and communities from the Iberian Peninsula to (i) quantify the frequency of experimental approaches used (manipulative, observational), aquatic systems, biological organization levels, and types of organisms and modelled responses, (ii) identify key individual stressors and the frequency of significant positive (increase in response magnitude) and negative (decrease) effects and (iii) determine types of interacting stressors and the frequency of their combined effects. Our dataset comprised 409 unique responses to 13 types of individual stressors, 34 stressor pairs and 12 high-order interactions (3and 4-way). We found a higher prevalence of manipulative (85 %) respect to observational studies, and a greater focus on lotic systems (59 %) and heterotrophic organisms (58 %). The most studied stressors were nutrient (Nutr), thermal (Therm), hydrologic (Hydr), ultraviolet radiation (UVR), toxic (Toxic) and salinity (Sal) stress and land-use pressure. Individual stressors showed a higher proportion of negative (34 %) than positive effects (26 %). Nutr × UVR, Toxic × Toxic, Therm × Toxic, Hydr × Toxic, Sal × Therm, and Nutr × Therm were the most studied stressor pairs. Non-interactive (50 %) and interactive responses (50 %) were balanced. Antagonistic effects (18 %) were slightly more common than synergisms (15 %), reversal or opposing Limnetica, 41(2): 000-000 (2022). DOI: 10.23818/limn.41.15 Gutiérrez-Cánovas et al.","PeriodicalId":49906,"journal":{"name":"Limnetica","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68867092","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Mar Menor lagoon (SE Spain) chlorophyll-a and turbidity estimation with Sentinel-2 用Sentinel-2估算Mar Menor泻湖(西班牙东南部)的叶绿素-a和浊度

IF 1.4 4区环境科学与生态学

Limnetica Pub Date : 2022-01-01 DOI: 10.23818/limn.41.18

Zhan Yeley, J. Delegido, M. Erena, J. Soria, A. Ruiz-Verdú, Patricia Urrego, X. Sòria-Perpinyà, E. Vicente, J. Moreno

{"title":"Mar Menor lagoon (SE Spain) chlorophyll-a and turbidity estimation with Sentinel-2","authors":"Zhan Yeley, J. Delegido, M. Erena, J. Soria, A. Ruiz-Verdú, Patricia Urrego, X. Sòria-Perpinyà, E. Vicente, J. Moreno","doi":"10.23818/limn.41.18","DOIUrl":"https://doi.org/10.23818/limn.41.18","url":null,"abstract":"Mar Menor is a Mediterranean Coastal lagoon with high environmental and social value, but has suffered important episodes of contamination in recent years due to heavy rains, sediment dragging and polluting substances mainly from agriculture as well as the entry of mining waste, causing an increase in eutrophication. Water quality variables such as chlorophyll-a concentration [Chl-a] and turbidity, can be studied through its optical properties by remote sensing techniques. In this work, a methodology is proposed for monitoring [Chl-a] and the turbidity of the Mar Menor using Sentinel-2 images. For this purpose, an extensive database of both variables was used consisting of data taken on different dates between 2016 and 2019 at 12 points of Mar Menor. The images were atmospherically corrected using Case 2 Regional Coast Color Processor (C2RCC) version for turbid waters (C2X) to obtain the water surface reflectance. Then several arithmetic relations between database and reflectance bands used in the bibliography for [Chl-a] and turbidity were analyzed. Comparing the results of each one of these relations with the in situ data, decided that the best index for [Chl-a] estimation is the relation (R560 + R705)/ (R560 + R665) with an RMSE = 2.6 mg/m3 and a NRMSE = 9.1 % and for turbidity R705*R705/R490 with an RMSE = 1.5 NTU and a NRMSE= 10.9 %. Finally, by applying these relationships on different dates, thematic maps of [Chl-a] and turbidity of Mar Menor were obtained. One of these images was some days after September 2019 torrential rains, in which a considerable [Chl-a] and turbidity increase was observed","PeriodicalId":49906,"journal":{"name":"Limnetica","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68867696","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Brown trout density effects on the macroinvertebrate and biofilm communities of headwater streams: a cage experiment 褐鳟密度对源流大型无脊椎动物和生物膜群落的影响:笼式实验

IF 1.4 4区环境科学与生态学

Limnetica Pub Date : 2022-01-01 DOI: 10.23818/limn.42.02

Alejandro López-de Sancha, Romero Roig, Martí Aranyó, A. Vila-Gispert, H. Guasch

引用次数: 0

Bridging community and metacommunity perspectives in benthic photosynthetic organisms (Serranía de Cuenca, Central Spain) 连接底栖光合生物的群落和元群落观点(Serranía de Cuenca，西班牙中部)

IF 1.4 4区环境科学与生态学

Limnetica Pub Date : 2022-01-01 DOI: 10.23818/limn.42.04

M. Álvarez Cobelas, C. Rojo

{"title":"Bridging community and metacommunity perspectives in benthic photosynthetic organisms (Serranía de Cuenca, Central Spain)","authors":"M. Álvarez Cobelas, C. Rojo","doi":"10.23818/limn.42.04","DOIUrl":"https://doi.org/10.23818/limn.42.04","url":null,"abstract":"We analysed summer assemblages and the metacommunity structure of benthic microalgae and Cyanobacteria (BMC) living in pristine ecosystems in the Serranía de Cuenca (Central Spain), whose flora is not well-known. Our analyses were focused on both overall samples and some site subgroups (two large catchments, lotic vs lentic environments, plant vs mineral substrates). 379 taxa were recorded, with Diatoms, Chlorophytes and Cyanobacteria being the richest groups. The flora composition de-pended on conductivity and the percentage of forests in each sub-basin; even so, the composition was spatially homogeneous, reflecting the relatively low variability of the landscape. Taxonomic richness did not differ between inventory subgroups, but it was vulnerable to the somewhat higher values of low concentrations of nitrogen and phosphorus compounds. Two groups of BMC assemblages emerged in the territory: one of cosmopolitan Diatoms and Cyanobacteria, and another of Cyanobacteria, Diatoms and Chlorophytes associated with travertine. The structure of the metacommunity was governed by the contributions of space, catchment features and the local environment (chemical and biological); the relevance of biological factors, which are not usually analysed, was highlighted. Finally, we suggest the joint study of local ecology and metacommunity that is feasible with the many occurrence databases of many benthic organisms. Soon artificial intelligence and new taxonomic tools will allow faster and more comprehensive processing of the huge number of freshwater datasets already in existence, which will be a huge leap in ecological knowledge of benthic assemblages in the coming years.","PeriodicalId":49906,"journal":{"name":"Limnetica","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68867500","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dinámica temporal y espacial de los grupos funcionales del fitoplancton en un embalse tropical colombiano 哥伦比亚热带水库浮游植物功能群的时空动态

IF 1.4 4区环境科学与生态学

Limnetica Pub Date : 2022-01-01 DOI: 10.23818/limn.41.20

Isabel Cristina Gil-Guarín, S. Villabona-González, M. I. Ríos-Pulgarín

{"title":"Dinámica temporal y espacial de los grupos funcionales del fitoplancton en un embalse tropical colombiano","authors":"Isabel Cristina Gil-Guarín, S. Villabona-González, M. I. Ríos-Pulgarín","doi":"10.23818/limn.41.20","DOIUrl":"https://doi.org/10.23818/limn.41.20","url":null,"abstract":"Los rasgos funcionales morfológicos, fisiológicos y ecológicos de las comunidades planctónicas en sistemas naturales han mostrado sensibilidad frente a la variabilidad hidrológica, no obstante, hay poca información respecto a la dinámica funcional del fitoplancton en embalses tropicales con alto tiempo de residencia. En este trabajo se estudió la composición y biomasa de los grupos funcionales del fitoplancton propuestos por Reynolds et al. (2002), sus cambios durante periodos hidrológicos contrastantes y a lo largo del gradiente espacial (longitudinal y vertical) y su relación con variables físicas y químicas en el embalse El Peñol-Guatapé. Se registraron siete grupos funcionales, de acuerdo con su preferencia en términos de luz, estado trófico y condiciones de mezcla: GF-F (Botryococcus braunni, Oocystis cf. lacustris), GF-Lm (Ceratium furcoides y Microcystis wesenbergii), GF-Lo (Chroococcus minutus, Peridinium gatunense y un organismo de Peridiniales), GF-P (Staurastrum rotula), GF-S1 (Oscillatoria limosa), GF-Y (Cryptomonas sp. y Parvodinium sp.) y GF-Sin (que incluyó a Cyclotella sp.). A nivel temporal, los grupos respondieron a factores asociados con la hidrodinámica, el clima y las sustancias suspendidas y disueltas. En la escala espacial-longitudinal las condiciones impuestas por el afluente principal, especialmente el gradiente de luz, fueron determinantes en la distribución de los grupos. En cuanto a la dimensión vertical, los procesos de mezcla favorecieron la permanencia de los organismos en la zona fótica, de acuerdo con sus rasgos morfológicos y fueron determinantes de su distribución.","PeriodicalId":49906,"journal":{"name":"Limnetica","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68867276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects on macroinvertebrate communities a year after the rehabilitation of an urban river (Tinto River, Portugal) 城市河流修复后一年对大型无脊椎动物群落的影响(葡萄牙Tinto河)

IF 1.4 4区环境科学与生态学

Limnetica Pub Date : 2022-01-01 DOI: 10.23818/limn.41.22

T. Jesus, Fernando Pessoa

引用次数: 0

First record of Trocheta subviridis Dutrochet, 1817 (Arhynchobdellida, Erpobdellidae) from the north-eastern Iberian Peninsula (Navarra, Spain) 西班牙纳瓦拉伊比利亚半岛东北部首次记录的subviridis Trocheta Dutrochet (Arhynchobdellida, Erpobdellidae)

IF 1.4 4区环境科学与生态学

Limnetica Pub Date : 2022-01-01 DOI: 10.23818/limn.42.01

T. Cancellario, R. Miranda, E. Baquero, C. Grosser

引用次数: 0

Organic matter seasonality and ecosystem metabolism in two tropical first-order streams 两个热带一级河流的有机质季节性和生态系统代谢

IF 1.4 4区环境科学与生态学

Limnetica Pub Date : 2022-01-01 DOI: 10.23818/limn.41.19

Daniela Cortés Guzmán, J. Alcocer, José Daniel Cuevas Lara, Ismael Soria Reinoso, L. Oseguera, M. Merino-Ibarra

{"title":"Organic matter seasonality and ecosystem metabolism in two tropical first-order streams","authors":"Daniela Cortés Guzmán, J. Alcocer, José Daniel Cuevas Lara, Ismael Soria Reinoso, L. Oseguera, M. Merino-Ibarra","doi":"10.23818/limn.41.19","DOIUrl":"https://doi.org/10.23818/limn.41.19","url":null,"abstract":"Organic matter seasonality and ecosystem metabolism in two tropical first-order streams Dissolved and particulate organic matter are the energy source for secondary production in forested streams. Cycling of organic matter and stream ecosystem functioning are linked to organic matter input and storage capacity and timing. This study assessed the seasonal variation (dry and rainy seasons) of environmental parameters, organic matter stock and input, and stream metabolism in two first-order tropical streams in the Selva Lacandona, Mexico. We also aimed to identify the drivers of organic matter and stream metabolism seasonality. We found seasonal variation in organic matter stock and input correlated with tropical seasonality. Dissolved organic matter and seston increased in the rainy season, while benthic primary producers and leaf litter stock and input increased in the dry season correlated with lower water discharge. Gross primary production increased in the dry season, while ecosystem respiration did not differ between seasons. Seasonality defined by the rainfall pattern and its effect on stream hydrology is the main driver of organic matter dynamics in tropical streams. However, environmental parameters and organic matter stock and input were not good predictors of stream metabolism.","PeriodicalId":49906,"journal":{"name":"Limnetica","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68867252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Ecological impact of recreational bathing at Las Presillas (Lozoya River, Sierra de Guadarrama National Park, central Spain) Las Presillas(西班牙中部瓜达拉马山国家公园Lozoya河)休闲浴场的生态影响

IF 1.4 4区环境科学与生态学

Limnetica Pub Date : 2022-01-01 DOI: 10.23818/limn.41.23

Christian Arnanz, A. López-Archilla, P. Alcorlo

{"title":"Ecological impact of recreational bathing at Las Presillas (Lozoya River, Sierra de Guadarrama National Park, central Spain)","authors":"Christian Arnanz, A. López-Archilla, P. Alcorlo","doi":"10.23818/limn.41.23","DOIUrl":"https://doi.org/10.23818/limn.41.23","url":null,"abstract":"The ecological impacts of recreational uses on the rivers of Sierra de Guadarrama National Park (SGNP) have been scarcely studied. To assess the impacts of these uses at Las Presillas (an area with small dam along a section of the Lozoya River), and in the Lozoya River (upstream and downstream of the dams), the dynamics of the organic seston (FPOM), physicochemical variables (electric conductivity, dissolved oxygen, Temperature, and pH) and biological variables (fecal coliforms, fecal streptococci, and aquatic macroinvertebrates) during the recreational (July to September) and nonrecreational (October) periods were assessed. The variations observed in the physicochemical parameters were associated with autumnal influence. However, at Las Presillas, different values were found than at the rest of the surveyed sites, characterized by an increase in the concentration of FPOM and, human fecal contamination (although they did not reach dangerous levels) and the response of the macroinvertebrate communities, which resulted in a clear decrease in the IBMWP index and other quality metrics, during the recreational period. These findings suggest that the combined effects of the dams and recreational activities at Las Presillas generate functional dynamics in that alter the habitat in summer. The identification and study of these impacts through the application of innovative indices and quality classes that integrate and contextualize Las Presillas in the SGNP monitoring network, have been identified as key management and conservation tools.","PeriodicalId":49906,"journal":{"name":"Limnetica","volume":"1 1","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68867398","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0