Aquatic Ecology最新文献_第7页

Salinity sensitivity of Moina macrocopa post-diapause females hatched from resting eggs of different ages 不同年龄的静止卵孵化的大尾鸲绝育后雌性对盐度的敏感性

IF 1.7 4区环境科学与生态学

Aquatic Ecology Pub Date : 2024-05-13 DOI: 10.1007/s10452-024-10110-9

Tatiana Lopatina, Natalia Oskina, Egor Zadereev

{"title":"Salinity sensitivity of Moina macrocopa post-diapause females hatched from resting eggs of different ages","authors":"Tatiana Lopatina, Natalia Oskina, Egor Zadereev","doi":"10.1007/s10452-024-10110-9","DOIUrl":"10.1007/s10452-024-10110-9","url":null,"abstract":"<div>Worldwide freshwater salinization may significantly alter ecosystem functioning and affect biodiversity. We studied the effect of salinity on hatching success of resting eggs of different ages and life history traits of post-diapause females of cladoceran Moina macrocopa. The hatching success of resting eggs was almost unaffected by the salinity we tested (up to 5.9 g L−1). We observed a distinct difference in the hatching success of resting eggs of different ages, which was lower by ca. 50% for 4-year-old resting eggs compared with 1-year-old resting eggs. We found a decrease in the values of the life-history traits of the females hatched from 4-year-old resting eggs compared with the females hatched from 1-year-old resting eggs exposed to salinity within the range of 0.08–3.5 g L−1: a shorter lifespan, a lower juvenile somatic growth rate, a delay in the day of the first reproduction, and a smaller number of parthenogenetic clutches produced. Analysis showed that at a salinity of 3.5 g L−1, females hatched from resting eggs are more vulnerable to the effect of salinity than directly developing females. The post-diapause females exposed to salinity showed a shorter lifespan and reduced reproduction parameters (produced fewer clutches and neonates) compared with the directly developing females. Thus, the hatching of resting eggs can be considered as a critical period of the development of a species with the diapause in its life cycle due to the vulnerability of post-diapause females to increased salinity, which can be crucially important for the ecological success of the population.</div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 3","pages":"865 - 877"},"PeriodicalIF":1.7,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140941721","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

Growth dynamics and lipid metabolism of Aurantiochytrium sp.: insights into its potential applications Aurantiochytrium sp.的生长动力学和脂质代谢：对其潜在应用的启示

IF 1.7 4区环境科学与生态学

Aquatic Ecology Pub Date : 2024-05-11 DOI: 10.1007/s10452-024-10105-6

Zahra Shafaghat, Farzaneh Najafi, Ramazan-Ali Khavari-Nejad, Mehdi Mohammadi, Sattar Tahmasebi Enferadi

{"title":"Growth dynamics and lipid metabolism of Aurantiochytrium sp.: insights into its potential applications","authors":"Zahra Shafaghat, Farzaneh Najafi, Ramazan-Ali Khavari-Nejad, Mehdi Mohammadi, Sattar Tahmasebi Enferadi","doi":"10.1007/s10452-024-10105-6","DOIUrl":"10.1007/s10452-024-10105-6","url":null,"abstract":"<div>Aurantiochytrium sp. is a marine microalga known for its bioactive compounds. This study assessed its presence in Iran and investigated its specific biochemical and molecular traits. Parameters such as biomass, protein content, hydrogen peroxide (H2O2) and malondialdehyde (MDA) levels, catalase enzyme (CAT) activity, and expression of malic enzyme (ME) and acetyl-CoA carboxylase (ACCase) genes were analyzed at different growth stages (24, 48, 72, and 96 h). Fatty acid composition, unsaturated fatty acids (UFA) and saturated fatty acids (SFA) contents, and the ratio of UFA to SFA were also examined. Molecular identification confirmed successful proliferation, with significant increases in biomass and protein content during growth. Elevated H2O2 and MDA levels indicated oxidative stress, whereas enhanced CAT activity suggested its potential role in scavenging reactive oxygen species and mitigating oxidative damage. The upregulation of ME and ACCase genes during growth indicated their involvement in lipid biosynthesis. This was further supported by the analysis of fatty acid composition, which revealed a higher proportion of UFA than SFA. These findings underscore the importance of specific growth stages for optimizing cultivation conditions and maximizing bioactive compound production in Aurantiochytrium sp. Overall, this study provides valuable insights into the growth dynamics and lipid metabolism of Aurantiochytrium sp., contributing to our understanding of its potential applications.</div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 3","pages":"789 - 799"},"PeriodicalIF":1.7,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140935966","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

The impact of salinization on benthic macro-crustacean assemblages in a Mediterranean shallow lake 盐碱化对地中海浅水湖底栖大型甲壳类动物群落的影响

IF 1.7 4区环境科学与生态学

Aquatic Ecology Pub Date : 2024-05-06 DOI: 10.1007/s10452-024-10099-1

Krešimir Žganec, C. Brannon Andersen, Jasna Lajtner

{"title":"The impact of salinization on benthic macro-crustacean assemblages in a Mediterranean shallow lake","authors":"Krešimir Žganec, C. Brannon Andersen, Jasna Lajtner","doi":"10.1007/s10452-024-10099-1","DOIUrl":"10.1007/s10452-024-10099-1","url":null,"abstract":"<div>The shallow Vrana Lake in Dalmatia, Croatia, is directly connected to the Adriatic Sea by the Prosika canal (0.85 km), constructed in the eighteenth century. The aim of this research was to examine the impacts of salinization on long-term changes in littoral macro-crustacean (Malacostraca) populations and assemblages in Vrana Lake and connecting canals. Benthic macroinvertebrates were sampled at seven sites during the period 2011–2020 (14 months) using a hand net (25 × 25 cm, 500 µm). During the study period, saltwater intrusions (strongest in 2012) through the Prosika Canal and site V4 caused increased salinization, resulting in a shift from normal oligohaline (0.5–5 PSU) to mesohaline (5–18 PSU) salinity. Out of a total of 18 macro-crustacean taxa identified, five widespread species—amphipods Echinogammarus stocki and Gammarus aequicauda, isopods Lekanesphaera hookeri and Proasellus coxalis, and decapod Palaemon antennarius constituted 91.6% of collected specimens (26,986). The first three brackish/marine species were significantly positively correlated with the average salinity 12 and 24 months before sampling. They disappeared or had very low abundance during the second low salinity phase (< 1–2 PSU), when freshwater/oligohaline P. coxalis and P. antennarius were the dominant macro-crustaceans. Two years of low salinity were needed for a strong population decline or disappearance of three brackish/marine species. Salinization is a major stressor in the Vrana Lake basin, and measures for its active control are urgently needed. The use of tested macro-crustacean metrics is recommended for future ecological monitoring as it could provide fast information about the effects of water management on aquatic biodiversity.</div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 3","pages":"689 - 706"},"PeriodicalIF":1.7,"publicationDate":"2024-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140883849","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

Variation in thermal trait and plankton assemblage pattern induced by coal power plant discharge in river Ganga 恒河中煤电厂排放物诱发的热特征变化和浮游生物组合模式

IF 1.7 4区环境科学与生态学

Aquatic Ecology Pub Date : 2024-05-03 DOI: 10.1007/s10452-024-10103-8

Basanta Kumar Das, Dhruba Jyoti Sarkar, Pranab Gogoi, Saurav Kumar Nandy, Arghya Kunui, Manisha Bhor, Amiya Kumar Sahoo

{"title":"Variation in thermal trait and plankton assemblage pattern induced by coal power plant discharge in river Ganga","authors":"Basanta Kumar Das, Dhruba Jyoti Sarkar, Pranab Gogoi, Saurav Kumar Nandy, Arghya Kunui, Manisha Bhor, Amiya Kumar Sahoo","doi":"10.1007/s10452-024-10103-8","DOIUrl":"10.1007/s10452-024-10103-8","url":null,"abstract":"<div>Thermal pollution in the riverine resources is an important issue due to its potential threat concern towards aquatic organisms. Though the thermal pollution effect on the planktonic community is well studied in the coastal thermal plant, little is available in freshwater stretches of river ecosystems. The goal of the current study was to ascertain the impact of thermal discharge from a coal-fired power station on the planktonic population and water quality along the spatial and temporal dimensions of a tropical river Ganga River. Thermal discharge led to a thermal gradient with an increase in water temperature in the river near the discharge point. The effect of temperature elevation was more profound in winter than the summer. The results showed that the dissolved oxygen and chlorophyll content was lower (1.46 and 1.34 times, respectively) near the thermal discharge point particularly in the winter as compared to summer. A total of 28 phytoplankton genera from 9 classes were identified among which 5 and 3 genera are dominated in winter and summer, respectively. The thermal discharge resulted in 1.34 times reduced chlorophyll content at the source in the winter, whereas no effect was observed in the summer. However, the diversity and abundance of plankton were found to be more closely connected to seasonal variation than to the thermal gradient. This study inferred that the plankton assemblage pattern at the thermal discharge point in the tropical river was more influenced by seasonal variation than the thermal discharge. Further studies are required on other aquatic biota for a comprehensive understanding of the effect of thermal pollution on river health status.</div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 3","pages":"759 - 773"},"PeriodicalIF":1.7,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140883852","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

Culex quinquefasciatus mosquito avoids ovipositing in habitats with the annual fish (Nothobranchius neumanni) in Tanzania 坦桑尼亚的库蚊避免在有年鱼（Nothobranchius neumanni）的栖息地产卵

IF 1.7 4区环境科学与生态学

Aquatic Ecology Pub Date : 2024-05-03 DOI: 10.1007/s10452-024-10104-7

Gordian Rocky Mataba, Linus Munishi, Luc Brendonck, Bram Vanschoenwinkel

{"title":"Culex quinquefasciatus mosquito avoids ovipositing in habitats with the annual fish (Nothobranchius neumanni) in Tanzania","authors":"Gordian Rocky Mataba, Linus Munishi, Luc Brendonck, Bram Vanschoenwinkel","doi":"10.1007/s10452-024-10104-7","DOIUrl":"10.1007/s10452-024-10104-7","url":null,"abstract":"<div>Mosquitoes are known to choose oviposition habitats actively based on their suitability for survival of their offspring. They thus avoid laying eggs in dangerous habitats with aquatic predators through detection of their cues. Visual, tactile, and chemical cues emitted by certain predators have been shown to reduce oviposition in some mosquitoes, which in turn may affect their adult population sizes. However, those tests tend to be limited to species from temperate regions. Moreover, mosquito oviposition response to predator cues have been shown to be predator specific, but this has not been investigated for many potential predators worldwide. In the African subtropics, temporary ponds can be important mosquito breeding habitats and the same habitats are also used by a group of specialized killifish that can survive dry periods using drought resistant eggs. Although they are reported as mosquito predators, it is unknown whether mosquitoes actively avoid laying eggs in ponds with annual killifish. We investigated this using the mosquito Culex quinquefasciatus and the free and caged killifish Nothobranchius neumanni in the outdoor mesocosm experiments in Tanzania. We found that Cx. quinquefasciatus had 71% lower oviposition in mesocosms with free swimming killifish and 68% lower oviposition in mesocosms with caged killifish. We conclude that predator-released chemical cues alone are enough to explain the observed responses. If the cues can be isolated and chemically identified can be developed into a biological mosquito control strategy and used to safeguard public health in areas where mosquito borne diseases are endemic.</div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 3","pages":"775 - 787"},"PeriodicalIF":1.7,"publicationDate":"2024-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140883855","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

Seagrass cover and associated macrobenthic marine invertebrates in Southern Philippines 菲律宾南部的海草覆盖率和相关大型底栖海洋无脊椎动物

IF 1.7 4区环境科学与生态学

Aquatic Ecology Pub Date : 2024-04-29 DOI: 10.1007/s10452-024-10095-5

Dan Arriesgado, Elgen Arriesgado, Elnor Roa, Aida Perpetua, Ruby Gonzales, Rodrigo Acuña, Rustan Eballe, Delyn Bucay, Mayenne Balaba, Lyndon Roa, Bopp Benjack Janolino, Richard Muallil, Julius Mingoc, Marnelle Sornito

{"title":"Seagrass cover and associated macrobenthic marine invertebrates in Southern Philippines","authors":"Dan Arriesgado, Elgen Arriesgado, Elnor Roa, Aida Perpetua, Ruby Gonzales, Rodrigo Acuña, Rustan Eballe, Delyn Bucay, Mayenne Balaba, Lyndon Roa, Bopp Benjack Janolino, Richard Muallil, Julius Mingoc, Marnelle Sornito","doi":"10.1007/s10452-024-10095-5","DOIUrl":"10.1007/s10452-024-10095-5","url":null,"abstract":"<div>In Southern Philippines where coastal research is scarce and hindered by safety and security concerns, the present study on seagrass assessment and its associated macroinvertebrates is imperative for resource conservation and management. The study was conducted in 19 seagrass sites across 18 coastal municipalities spanning the seagrass beds in the Southern Philippines. The results identified eight seagrasses with Thalassia hemprichii, Enhalus acoroides, and Cymodocea rotundata as the most frequent species. Seagrass cover ranged from 26.50 (fair) to 91.30% (very good conditions), highest in Sitangkai and lowest in Tubig Indangan, Simunul. In six sites, the seagrass was below good quality (fair). Forty-eight (48) macroinvertebrate species, represented by five phyla, were recorded in the seagrass sites. The highest total number of species is the Mollusks (26). The sea urchin Diadema setosum was the species with the highest density (0.1327 ind/m2), while the prevalence of commercial-important species was observed, like conch shells (Canarium, Strombus, Lambis). Thirteen sites are recorded with high macroinvertebrate diversity values (> 2). Tubig Indangan, Simunul had the highest dominance value, which is attributed to the high density of Trepneustes gratilla. The loss of seagrass habitat would equate to great economic losses through the risk of their different ecological and economic functions. This study provides novel baseline information about the status of the tropical seagrasses in Southern Philipines and the region of Mindanao, as well as the invertebrate communities they host, which is essential to establishing adequate management practices.</div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 3","pages":"643 - 657"},"PeriodicalIF":1.7,"publicationDate":"2024-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140810443","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

Genetic diversity of Egeria densa Planch. (Hydrocharitaceae) in Brazilian reservoirs 巴西水库中 Egeria densa Planch.(巴西水库中 Egeria densa Planch 的遗传多样性

IF 1.7 4区环境科学与生态学

Aquatic Ecology Pub Date : 2024-04-24 DOI: 10.1007/s10452-024-10100-x

Léia Carolina Lucio, Bárbara Scorsim, Adrian Cesar da Silva, Alessandra Valéria de Oliveira, Sidinei Magela Thomaz, Sônia Maria Alves Pinto Prioli, Alberto José Prioli

{"title":"Genetic diversity of Egeria densa Planch. (Hydrocharitaceae) in Brazilian reservoirs","authors":"Léia Carolina Lucio, Bárbara Scorsim, Adrian Cesar da Silva, Alessandra Valéria de Oliveira, Sidinei Magela Thomaz, Sônia Maria Alves Pinto Prioli, Alberto José Prioli","doi":"10.1007/s10452-024-10100-x","DOIUrl":"10.1007/s10452-024-10100-x","url":null,"abstract":"<div>Macrophytes harbor numerous potentially invasive species that pose a threat to biodiversity and ecosystem services in freshwater environments. Egeria densa (Hydrocharitaceae) stands out as a prominent invasive species, recognized as a significant global invader across various ecosystems. In this study, we conducted an assessment of the genetic variability of this species in four Brazilian reservoirs, which are part of the species’ native range, employing the internal transcribed spacer (ITS) from the nuclear marker and the intergenic chloroplast marker trnL-trnF. The obtained sequences were then compared with those available in GenBank (NCBI). The results of our investigation revealed a low genetic differentiation among the sampled populations. For ITS and trnL-trnF, we identified four and three distinct haplotypes, respectively, with a predominant single haplotype shared by most specimens. Notably, we did not observe a discernible phylogeographic structure. The data we obtained represents the first sequences of E. densa within its native habitat, providing valuable insights on its genetic diversity and helping to understand invasive processes.</div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 3","pages":"707 - 716"},"PeriodicalIF":1.7,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140663400","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

Assessments of the impacts of chemical and hydrocarbon pollution on Ologe Lagoon water and its prokaryotic community structure 评估化学和碳氢化合物污染对奥洛格泻湖水及其原核生物群落结构的影响

IF 1.7 4区环境科学与生态学

Aquatic Ecology Pub Date : 2024-04-22 DOI: 10.1007/s10452-024-10102-9

Ahmeed Olalekan Ashade, Oluwafemi Sunday Obayori, Lateef Babatunde Salam, Muibat Omotola Fashola, Francisca Obiageri Nwaokorie

{"title":"Assessments of the impacts of chemical and hydrocarbon pollution on Ologe Lagoon water and its prokaryotic community structure","authors":"Ahmeed Olalekan Ashade, Oluwafemi Sunday Obayori, Lateef Babatunde Salam, Muibat Omotola Fashola, Francisca Obiageri Nwaokorie","doi":"10.1007/s10452-024-10102-9","DOIUrl":"10.1007/s10452-024-10102-9","url":null,"abstract":"<div>Ologe Lagoon, in Lagos State Nigeria, is one of the freshwaters exposed to chemical and hydrocarbon pollution. The impacts of anthropogenic pollution on lagoon microbial communities were assessed. Three sampling points were identified, namely Ologe industrial contaminated water (OLICW), Ologe human activity water (OLHAW), and relatively undisturbed water (OLPW). The microbial community structure of samples was determined via Illumina shotgun next-generation sequencing, while taxonomic classification was done by centrifuge. Acidic pH of (3.8 ± 0.02; 4.6 ± 0.01; and 6.5 ± 0.04) were observed for OLHAW, OLICW and OLPW. The heavy metals nickel and lead showed increase at OLICW > OLPW > OLHAW with their values higher than the WHO permissible limit. The gas chromatography flame ionization detector (GC-FID) fingerprints of the samples showed presence of aliphatic (nC1-nC17) and aromatic hydrocarbons like pyrene, anthracene, phenanthraquinone, and phenanthridine which is evidence of pollution. Structurally, the water metagenomes comprised of 40, 43, and 42 phyla, 67, 74, and 72 classes, 666, 982, and 920 genera from OLHAW, OLICW, and OLPW metagenomes. Dominant phyla across the three sites were Proteobacteria (37.1–64.1%), Actinobacteria (6.1–21.6%), Cyanobacteria (5.3–14.0%), Planctomycetes (6.6%), Firmicutes (6.6–5.7%). Archaea phyla like Euryarchaeota and Creanarchaeota were encountered. Principal component ordination (PCO) showed that OLHAW prokaryotic community had total variance of 88.2% PCO1 separating it from OLICW and OLPW, also OLICW and OLPW were separated by PCO2 accounting for 11.8% variation but clustered showing 60% similarity. The study showed abundance of Cyanobacteria, Nitrospira and Clostridia which are biological indicator of pollution and their presence signify eutrophication.</div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 3","pages":"741 - 757"},"PeriodicalIF":1.7,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140675289","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

Temporal and spatial variations drive the phytoplankton communities in rock pools in a semi-arid region 半干旱地区岩池浮游植物群落的时空变化

IF 1.7 4区环境科学与生态学

Aquatic Ecology Pub Date : 2024-04-22 DOI: 10.1007/s10452-024-10097-3

Luciana Gomes Barbosa, Mihir R. Kulkarni, Ênio Wocyli Dantas, Danielle Lima de Oliveira, Fátima dos Santos Silva, Jascieli Carla Bortolini

{"title":"Temporal and spatial variations drive the phytoplankton communities in rock pools in a semi-arid region","authors":"Luciana Gomes Barbosa, Mihir R. Kulkarni, Ênio Wocyli Dantas, Danielle Lima de Oliveira, Fátima dos Santos Silva, Jascieli Carla Bortolini","doi":"10.1007/s10452-024-10097-3","DOIUrl":"10.1007/s10452-024-10097-3","url":null,"abstract":"<div>In arid zones, ephemeral rock pools exhibit cyclical and unpredictable hydroperiods, which entail long periods of drought and short periods of flooding. The hydrological perturbations associated with the dry phase could potentially trigger abrupt changes in the structure and dynamics of the communities in temporary ecosystems. Our main objective was to investigate the processes shaping phytoplankton communities, driven by local environmental variables, spatial distribution (urban and protected rock pools), and the hydrological regime (different phases), with a focus on disturbances over space and time. The hydrological regime was irregular throughout most months, characterized by three phases distributed in rainy and dry periods. Phytoplankton biomass was higher in urban rock pools in the dry period, and analyses indicated that community structure was influenced by the local variables as temperature and total dissolved solids, by temporal phases and by spatial factors. Replacement contributed more to overall community dissimilarity than nestedness. Overall, the results highlight the role of environmental fluctuations and human pressure in urban rock pools, in structuring phytoplankton communities.</div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 3","pages":"659 - 674"},"PeriodicalIF":1.7,"publicationDate":"2024-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140677792","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

Structural and functional diversity of plankton communities along lake salinity gradients 湖泊盐度梯度浮游生物群落的结构和功能多样性

IF 1.7 4区环境科学与生态学

Aquatic Ecology Pub Date : 2024-04-20 DOI: 10.1007/s10452-024-10101-w

E. Yu. Afonina, N. A. Tashlykova

{"title":"Structural and functional diversity of plankton communities along lake salinity gradients","authors":"E. Yu. Afonina, N. A. Tashlykova","doi":"10.1007/s10452-024-10101-w","DOIUrl":"10.1007/s10452-024-10101-w","url":null,"abstract":"<div>The Transbaikalia (Russia) hosts a number of shallow endorheic saline alkaline lakes. The outcome of our studies demonstrated changes in phytoplankton and zooplankton in selected lakes covering a wide salinity gradient (from 0.69 to 128.33 g/L) over a number of years. Our main goal is to assess the variability of structural and functional indicators of phytoplankton and zooplankton communities at the various salinity levels. The gradient of abiotic factors significantly determines the dynamics of planktonic community diversity, abundance, biomass, and production. High values of secondary production was ensured by nonpredators (bacteriovorous, herbivorous, and detrivorus). We found that species and functional diversity of phytoplankton and zooplankton decrease with increasing salinity, whereas their abundance, biomass, and daily secondary production did not. In phytoplankton, a shift occurred from the small-medium cell size unicellular and colonial non-flagellated forms to the large-extra large filamentous cyanobacteria and colonial algae. A shift from selective raptorial and microphagous carnivores to herbivorous copepods and cladocerans and further to more generalist filter-feeder of rotifers and anostracans was observed in zooplankton. These findings are important because they provide a meaningful view of phytoplankton-zooplankton trophic interactions and contribute to an improved understanding their functional effects on aquatic ecosystems. Our results also complement existing knowledge and provides new information about the diversity and functioning of planktonic communities in soda lakes.</div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 3","pages":"717 - 740"},"PeriodicalIF":1.7,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140623800","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