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  1 / 1816 MEDLINE  
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[PMID]:29251883
[Au] Autor:Pal S; Chattopadhyay B; Mukhopadhyay SK
[Ti] Título:Spatio-temporal study of carbon sequestration through piscicultural practice at East Kolkata Wetland.
[So] Source:J Environ Biol;37(5):965-71, 2016 09.
[Is] ISSN:0254-8704
[Cp] País de publicação:India
[La] Idioma:eng
[Ab] Resumo:The present study focus the variation of carbon concentrations within three trophic level i.e., primary producer (phytoplankton), primary consumers (zooplankton) and secondary consumers (fish) in three selected ponds at East Kolkata Wetland area. Depending on the amount and frequency of wastewater input, physico-chemical characteristics of pond, species richness, predator-prey interactions and pond wise different piscicultural practices, the amount of carbon sequestration varied spatially. Significant temporal variations were also observed in each trophic level of these three selected East Kolkata Wetland pond ecosystems. On average primary producers were sequestered 2038.6 ± 244.8mg C m-3 d-1 whereas 307 ± 19.3 mg C m-3 and 11531.4 ± 318.2mg C m-3 was sequestered by primary and secondary consumers, respectively. In Kolkata and its nearby districts over 90% of the production was marked from the East Kolkata Wetland area. Consequently, a significant amount of sequestered carbon was exported from the East Kolkata Wetland ecosystem in the form of fish and this continuous system might increase the carbon sequestration efficiency of the aquatic ecosystem.
[Mh] Termos MeSH primário: Aquicultura
Sequestro de Carbono
Carbono/metabolismo
Peixes/fisiologia
Zonas Úmidas
[Mh] Termos MeSH secundário: Animais
Fitoplâncton/metabolismo
Tanques
Fatores de Tempo
Zooplâncton/metabolismo
[Pt] Tipo de publicação:RESEARCH SUPPORT, NON-U.S. GOV'T; JOURNAL ARTICLE
[Nm] Nome de substância:
7440-44-0 (Carbon)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180222
[Lr] Data última revisão:
180222
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171219
[St] Status:MEDLINE


  2 / 1816 MEDLINE  
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[PMID]:29257653
[Au] Autor:Golder D; Chattopadhyay S
[Ti] Título:Interrelationship between physico-chemical characteristics of a tropical lake and their impact on biodiversity of planktons.
[So] Source:J Environ Biol;37(6):1281-89, 2016 Nov.
[Is] ISSN:0254-8704
[Cp] País de publicação:India
[La] Idioma:eng
[Ab] Resumo:The physicochemical parameters including temperature, pH, dissolved O2, free CO2, total alkalinity, permanent hardness, salinity, transparency, specific conductivity, BOD, COD, phosphate and nitrate were studied in a tropical lake, called Bonhooghly Lake (situated at Baranagar, Kolkata) around the year 2014 and the correlation between the said parameters, as well as their impact on Biodiversity indices were made. There is stable increase of CO2 content in water from August (27.24 mg l-1) and afterwards due to decaying of plant materials. Therefore there is a slight fall of pH (7.1). Significant negative correlation (p<0.01) between pH and CO2 content was also obtained. It also shows a significant negative correlation with O2 content as well. During February and March transparency of water falls significantly with the increase of algal bloom. It significantly decreases dissolved O2 content and pH but increases free dissolved CO2 (p<0.01). Phosphate has a definite correlation with nitrate content of the Lake, possibly because both are among the most essential nutrients of living system. Increase of one obviously indicates escalation of other. During the early months of the year phosphate and nitrate content of water increased steadily (up to 0.13 and 1.85 mg l-1 respectively) and a very high number of Chlamydomonas(up to15100 l-1) and Chlorella (up to 13140 l-1)were observed. Species richness indices (Menhinick's index) of Phytoplanktons were observed maximum in the month of May, dominance (Simpson's index) in January and diversity (Shannon-Weaver index) in April. Zooplanktons also followed the same trend indicating close interdependence. It was significant that apart from other factors, temperature played a most pivotal role in bringing the diversity in the plankton community.
[Mh] Termos MeSH primário: Biodiversidade
Lagos/química
Fitoplâncton/classificação
Zooplâncton/classificação
[Mh] Termos MeSH secundário: Animais
Dióxido de Carbono/química
Monitoramento Ambiental
Concentração de Íons de Hidrogênio
Salinidade
Temperatura Ambiente
Clima Tropical
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
142M471B3J (Carbon Dioxide)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180219
[Lr] Data última revisão:
180219
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171220
[St] Status:MEDLINE


  3 / 1816 MEDLINE  
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[PMID]:29371626
[Au] Autor:Carradec Q; Pelletier E; Da Silva C; Alberti A; Seeleuthner Y; Blanc-Mathieu R; Lima-Mendez G; Rocha F; Tirichine L; Labadie K; Kirilovsky A; Bertrand A; Engelen S; Madoui MA; Méheust R; Poulain J; Romac S; Richter DJ; Yoshikawa G; Dimier C; Kandels-Lewis S; Picheral M; Searson S; Jaillon O; Aury JM; Karsenti E; Sullivan MB; Sunagawa S; Bork P; Not F; Hingamp P; Raes J; Guidi L; Ogata H; de Vargas C; Iudicone D; Bowler C; Wincker P; Tara Oceans Coordinators
[Ad] Endereço:CEA - Institut de Biologie François Jacob, Genoscope, Evry, 91057, France.
[Ti] Título:A global ocean atlas of eukaryotic genes.
[So] Source:Nat Commun;9(1):373, 2018 01 25.
[Is] ISSN:2041-1723
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:While our knowledge about the roles of microbes and viruses in the ocean has increased tremendously due to recent advances in genomics and metagenomics, research on marine microbial eukaryotes and zooplankton has benefited much less from these new technologies because of their larger genomes, their enormous diversity, and largely unexplored physiologies. Here, we use a metatranscriptomics approach to capture expressed genes in open ocean Tara Oceans stations across four organismal size fractions. The individual sequence reads cluster into 116 million unigenes representing the largest reference collection of eukaryotic transcripts from any single biome. The catalog is used to unveil functions expressed by eukaryotic marine plankton, and to assess their functional biogeography. Almost half of the sequences have no similarity with known proteins, and a great number belong to new gene families with a restricted distribution in the ocean. Overall, the resource provides the foundations for exploring the roles of marine eukaryotes in ocean ecology and biogeochemistry.
[Mh] Termos MeSH primário: Organismos Aquáticos
Eucariotos/genética
Células Eucarióticas/metabolismo
Metagenoma
Filogenia
Zooplâncton/genética
[Mh] Termos MeSH secundário: Sequência de Aminoácidos
Animais
Atlas como Assunto
Bactérias/classificação
Bactérias/genética
Biodiversidade
Ecossistema
Eucariotos/classificação
Células Eucarióticas/citologia
Metagenômica/métodos
Oceanos e Mares
Fitoplâncton/classificação
Fitoplâncton/genética
Água do Mar
Vírus/classificação
Vírus/genética
Zooplâncton/classificação
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180127
[St] Status:MEDLINE
[do] DOI:10.1038/s41467-017-02342-1


  4 / 1816 MEDLINE  
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[PMID]:29298334
[Au] Autor:Bouquet JM; Troedsson C; Novac A; Reeve M; Lechtenbörger AK; Massart W; Skaar KS; Aasjord A; Dupont S; Thompson EM
[Ad] Endereço:Department of Biology, University of Bergen, Bergen, Norway.
[Ti] Título:Increased fitness of a key appendicularian zooplankton species under warmer, acidified seawater conditions.
[So] Source:PLoS One;13(1):e0190625, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Ocean warming and acidification (OA) may alter the fitness of species in marine pelagic ecosystems through community effects or direct physiological impacts. We used the zooplanktonic appendicularian, Oikopleura dioica, to assess temperature and pH effects at mesocosm and microcosm scales. In mesocosms, both OA and warming positively impacted O. dioica abundance over successive generations. In microcosms, the positive impact of OA, was observed to result from increased fecundity. In contrast, increased pH, observed for example during phytoplankton blooms, reduced fecundity. Oocyte fertility and juvenile development were equivalent under all pH conditions, indicating that the positive effect of lower pH on O. dioica abundance was principally due to increased egg number. This effect was influenced by food quantity and quality, supporting possible improved digestion and assimilation at lowered pH. Higher temperature resulted in more rapid growth, faster maturation and earlier reproduction. Thus, increased temperature and reduced pH had significant positive impacts on O. dioica fitness through increased fecundity and shortened generation time, suggesting that predicted future ocean conditions may favour this zooplankton species.
[Mh] Termos MeSH primário: Ácidos/metabolismo
Água do Mar
Zooplâncton/fisiologia
[Mh] Termos MeSH secundário: Animais
Ecossistema
Temperatura Alta
Concentração de Íons de Hidrogênio
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (Acids)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180104
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190625


  5 / 1816 MEDLINE  
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[PMID]:29293577
[Au] Autor:Bachiller E; Utne KR; Jansen T; Huse G
[Ad] Endereço:Pelagic Fish Research Group, Institute of Marine Research (IMR), Bergen, Norway.
[Ti] Título:Bioenergetics modeling of the annual consumption of zooplankton by pelagic fish feeding in the Northeast Atlantic.
[So] Source:PLoS One;13(1):e0190345, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The present study uses bioenergetics modeling to estimate the annual consumption of the main zooplankton groups by some of the most commercially important planktivorous fish stocks in the Northeast Atlantic, namely Norwegian spring-spawning (NSS) herring (Clupea harengus), blue whiting (Micromesistius poutassou) and NEA mackerel (Scomber scombrus). The data was obtained from scientific surveys in the main feeding area (Norwegian Sea) in the period 2005-2010. By incorporating novel information about ambient temperature, seasonal growth and changes in the diet from stomach content analyses, annual consumption of the different zooplankton groups by pelagic fish is estimated. The present study estimates higher consumption estimates than previous studies for the three species and suggests that fish might have a greater impact on the zooplankton community as foragers. This way, NEA mackerel, showing the highest daily consumption rates, and NSS herring, annually consume around 10 times their total biomass, whereas blue whiting consume about 6 times their biomass in zooplankton. The three species were estimated to consume an average of 135 million (M) tonnes of zooplankton each year, consisting of 53-85 M tonnes of copepods, 20-32 M tonnes of krill, 8-42 M tonnes of appendicularians and 0.2-1.2 M tonnes of fish, depending on the year. For NSS herring and NEA mackerel the main prey groups are calanoids and appendicularians, showing a peak in consumption during June and June-July, respectively, and suggesting high potential for inter-specific feeding competition between these species. In contrast, blue whiting maintain a low consumption rate from April to September, consuming mainly larger euphausiids. Our results suggest that the three species can coexist regardless of their high abundance, zooplankton consumption rates and overlapping diet. Accordingly, the species might have niche segregation, as they are species specific, showing annual and inter-annual variability in total consumption of the different prey species. These estimates and their inter-annual and inter-specific variation are fundamental for understanding fundamental pelagic predator-prey interactions as well as to inform advanced multispecies ecosystem models.
[Mh] Termos MeSH primário: Metabolismo Energético
Comportamento Alimentar
Peixes/fisiologia
Modelos Biológicos
Zooplâncton
[Mh] Termos MeSH secundário: Animais
Oceano Atlântico
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180103
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190345


  6 / 1816 MEDLINE  
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[PMID]:28747475
[Au] Autor:Rogalski MA; Leavitt PR; Skelly DK
[Ad] Endereço:School of Forestry and Environmental Studies, Yale University, New Haven, CT 06511, USA rogalski@umich.edu.
[Ti] Título:Daphniid zooplankton assemblage shifts in response to eutrophication and metal contamination during the Anthropocene.
[So] Source:Proc Biol Sci;284(1859), 2017 Jul 26.
[Is] ISSN:1471-2954
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Human activities during the Anthropocene result in habitat degradation that has been associated with biodiversity loss and taxonomic homogenization of ecological communities. Here we estimated effects of eutrophication and heavy metal contamination, separately and in combination, in explaining zooplankton species composition during the past 125-145 years using analysis of daphniid diapausing egg banks from four lakes in the northeastern USA. We then examined how these community shifts influenced patterns of diversity and homogenization. Analysis of past lake production (via subfossil pigments) and metal contamination (via sedimentary metals) demonstrated that eutrophication alone (19-39%) and in combination with metal pollution (17-54%) explained 36-79% of historical variation in daphniid species relative abundances in heavily fertilized lakes. In contrast, metal pollution alone explained the majority (72%) of historical variation in daphniid assemblages at the oligotrophic site. Several species colonization events in eutrophying lakes resulted in increased species richness and gamma diversity through time. At the same time, daphniid assemblages in three eutrophied lakes became more similar to each other (homogenized), but this pattern was only seen when accounting for species presence/absence. We did not observe consistent patterns of divergence between the assemblages in the eutrophying lakes and the low-nutrient reference site. Given the pervasive nature of fertilization and metal pollution, and the sensitivity of cladocerans to these factors, we suggest that many inhabited lake districts may already exhibit similar patterns of daphniid assemblage shifts.
[Mh] Termos MeSH primário: Eutrofização
Metais Pesados/análise
Poluentes Químicos da Água/análise
Zooplâncton/classificação
[Mh] Termos MeSH secundário: Animais
Biodiversidade
Lagos/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Metals, Heavy); 0 (Water Pollutants, Chemical)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180202
[Lr] Data última revisão:
180202
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170728
[St] Status:MEDLINE


  7 / 1816 MEDLINE  
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[PMID]:29329295
[Au] Autor:Burgess KB; Guerrero M; Marshall AD; Richardson AJ; Bennett MB; Couturier LIE
[Ad] Endereço:School of Biomedical Sciences, The University of Queensland, St Lucia, Queensland, Australia.
[Ti] Título:Novel signature fatty acid profile of the giant manta ray suggests reliance on an uncharacterised mesopelagic food source low in polyunsaturated fatty acids.
[So] Source:PLoS One;13(1):e0186464, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Traditionally, large planktivorous elasmobranchs have been thought to predominantly feed on surface zooplankton during daytime hours. However, the recent application of molecular methods to examine long-term assimilated diets, has revealed that these species likely gain the majority from deeper or demersal sources. Signature fatty acid analysis (FA) of muscle tissue was used to examine the assimilated diet of the giant manta ray Mobula birostris, and then compared with surface zooplankton that was collected during feeding and non-feeding events at two aggregation sites off mainland Ecuador. The FA profiles of M. birostris and surface zooplankton were markedly different apart from similar proportions of arachidonic acid, which suggests daytime surface zooplankton may comprise a small amount of dietary intake for M. birostris. The FA profile of M. birostris muscle was found to be depleted in polyunsaturated fatty acids, and instead comprised high proportions of 18:1ω9 isomers. While 18:1ω9 isomers are not explicitly considered dietary FAs, they are commonly found in high proportions in deep-sea organisms, including elasmobranch species. Overall, the FA profile of M. birostris suggests a diet that is mesopelagic in origin, but many mesopelagic zooplankton species also vertically migrate, staying deep during the day and moving to shallower waters at night. Here, signature FA analysis is unable to resolve the depth at which these putative dietary items were consumed and how availability of this prey may drive distribution and movements of this large filter-feeder.
[Mh] Termos MeSH primário: Ácidos Graxos Insaturados/metabolismo
Ácidos Graxos/metabolismo
Comportamento Alimentar/fisiologia
Raias/metabolismo
[Mh] Termos MeSH secundário: Animais
Equador
Músculos/metabolismo
Raias/fisiologia
Zooplâncton/metabolismo
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fatty Acids); 0 (Fatty Acids, Unsaturated)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180129
[Lr] Data última revisão:
180129
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180113
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0186464


  8 / 1816 MEDLINE  
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[PMID]:28977035
[Au] Autor:Yang J; Zhang X; Zhang W; Sun J; Xie Y; Zhang Y; Burton GA; Yu H
[Ad] Endereço:State Key Laboratory of Pollution Control & Resource Reuse, School of the Environment, Nanjing University, Nanjing, P. R. China.
[Ti] Título:Indigenous species barcode database improves the identification of zooplankton.
[So] Source:PLoS One;12(10):e0185697, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Incompleteness and inaccuracy of DNA barcode databases is considered an important hindrance to the use of metabarcoding in biodiversity analysis of zooplankton at the species-level. Species barcoding by Sanger sequencing is inefficient for organisms with small body sizes, such as zooplankton. Here mitochondrial cytochrome c oxidase I (COI) fragment barcodes from 910 freshwater zooplankton specimens (87 morphospecies) were recovered by a high-throughput sequencing platform, Ion Torrent PGM. Intraspecific divergence of most zooplanktons was < 5%, except Branchionus leydign (Rotifer, 14.3%), Trichocerca elongate (Rotifer, 11.5%), Lecane bulla (Rotifer, 15.9%), Synchaeta oblonga (Rotifer, 5.95%) and Schmackeria forbesi (Copepod, 6.5%). Metabarcoding data of 28 environmental samples from Lake Tai were annotated by both an indigenous database and NCBI Genbank database. The indigenous database improved the taxonomic assignment of metabarcoding of zooplankton. Most zooplankton (81%) with barcode sequences in the indigenous database were identified by metabarcoding monitoring. Furthermore, the frequency and distribution of zooplankton were also consistent between metabarcoding and morphology identification. Overall, the indigenous database improved the taxonomic assignment of zooplankton.
[Mh] Termos MeSH primário: Código de Barras de DNA Taxonômico
Bases de Dados Genéticas
Zooplâncton/genética
[Mh] Termos MeSH secundário: Animais
Reação em Cadeia da Polimerase
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171102
[Lr] Data última revisão:
171102
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171005
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0185697


  9 / 1816 MEDLINE  
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[PMID]:28880871
[Au] Autor:Dahms HU; Tseng LC; Hwang JS
[Ad] Endereço:Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung, Taiwan.
[Ti] Título:Are vent crab behavioral preferences adaptations for habitat choice?
[So] Source:PLoS One;12(9):e0182649, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Hydrothermal vent organisms are adapted to their extreme and patchily distributed habitats. They are expected to have evolved mechanisms that keep them in their specific habitation. Since little is known about the recruitment or habitat selection of HV organisms such as brachyurans, we examined the properties of several hydrothermal vent-associated cues on the behavior of the hydrothermal vent (HV) crab Xenograpsus testudinatus in the laboratory that were contrasted by the offering of non-vent cues. This crab species is endemic and dominates the vent fauna of Turtle Island off the NE coast of Taiwan. HV crabs were separately and in combination offered the following vent-specific cues: (1) sulfuric sediment, (3) air-bubbling, (4) elevated temperature, (5) dead settled zooplankton, (7) other crabs, and (8) shade. The non-vent-specific cues were: (2) quarz sediment, (6) dead fish, (8) light. These cues were provided on either side of a two-choice chamber. The movement of individual crabs was monitored: as initial and final choices, and as the proportion of time the crabs spent in each compartment (resident time). Cues were offered alone and no such cue as a control in the same set-up. Sulfuric sediments and dead fish were significantly more attractive to females, and other crabs irrespective of gender were significantly more attractive to males. When compared to expected distributions, crabs, irrespective of gender, significantly avoided light and tended to select other crabs, air-bubbling, sulfuric sediment, elevated temperature, dead fish, dead zooplankton, and quarz sediments in the order of decreasing importance. Data do not support the hypothesis that dead settled zooplankton was particularly attractive nor that the other gender was selected. A combination of several vent-associated cues (sulfuric sediment, elevated temperature, air-bubbling) facilitated the strongest attraction to the crabs as reflected by all response variables. The 'first choice' responses were always consistent with the side of the choice compartment in which they spent the longest amount of time (resident time), but not with the 'final choice' of crabs, suggesting that the 'resident time' in addition to their 'first choice' is more reliable than just the 'final choice'. The present results provide the first indication that several vent-associated habitat cues function as attractors for HV crabs. Habitat choice is also reflected by crab larval distribution in the field which tend to stay near the bottom not to be carried away from their specific habitat.
[Mh] Termos MeSH primário: Adaptação Fisiológica/fisiologia
Braquiúros/fisiologia
Ecossistema
[Mh] Termos MeSH secundário: Animais
Feminino
Fontes Hidrotermais
Masculino
Enxofre
Temperatura Ambiente
Zooplâncton
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
70FD1KFU70 (Sulfur)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171016
[Lr] Data última revisão:
171016
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170908
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0182649


  10 / 1816 MEDLINE  
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[PMID]:28822342
[Au] Autor:Lin Q; Xu L; Hou J; Liu Z; Jeppesen E; Han BP
[Ad] Endereço:Department of Ecology, Jinan University, Guangzhou 510632, China.
[Ti] Título:Responses of trophic structure and zooplankton community to salinity and temperature in Tibetan lakes: Implication for the effect of climate warming.
[So] Source:Water Res;124:618-629, 2017 Nov 01.
[Is] ISSN:1879-2448
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Warming has pronounced effects on lake ecosystems, either directly by increased temperatures or indirectly by a change in salinity. We investigated the current status of zooplankton communities and trophic structure in 45 Tibetan lakes along a 2300 m altitude and a 76 g/l salinity gradient. Freshwater to hyposaline lakes mainly had three trophic levels: phytoplankton, small zooplankton and fish/Gammarus, while mesosaline to hypersaline lakes only had two: phytoplankton and large zooplankton. Zooplankton species richness declined significantly with salinity, but did not relate with temperature. Furthermore, the decline in species richness with salinity in lakes with two trophic levels was much less abrupt than in lakes with three trophic levels. The structural variation of the zooplankton community depended on the length of the food chain, and was significantly explained by salinity as the critical environmental variable. The zooplankton community shifted from dominance of copepods and small cladoceran species in the lakes with low salinity and three trophic levels to large saline filter-feeding phyllopod species in those lakes with high salinity and two trophic levels. The zooplankton to phytoplankton biomass ratio was positively related with temperature in two-trophic-level systems and vice versa in three-trophic-level systems. As the Tibetan Plateau is warming about three times faster than the global average, our results imply that warming could have a considerable impact on the structure and function of Tibetan lake ecosystems, either via indirect effects of salinization/desalinization on species richness, composition and trophic structure or through direct effects of water temperature on trophic interactions.
[Mh] Termos MeSH primário: Lagos
Zooplâncton
[Mh] Termos MeSH secundário: Animais
Clima
Aquecimento Global
Fitoplâncton
Salinidade
Temperatura Ambiente
Tibet
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171020
[Lr] Data última revisão:
171020
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170820
[St] Status:MEDLINE



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BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde