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| Registros recuperados: 242 | |
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| Diniz,Leidiane P.; Morais Júnior,Cláudio S. de; Medeiros,Ittalo L.S.; Silva,Alef J. da; Araújo,Alan P.; Silva,Tâmara A.; Melo Júnior,Mauro de. |
| Abstract The present study aimed to inventory the biodiversity of planktonic microcrustaceans (Cladocera and Copepoda) in 44 environments from the semiarid region of Brazil, increasing the knowledge about zooplankton community, including phytophilous species. Between 2011 and 2017, organisms were collected in a non - systematic way in the states of Rio Grande do Norte, Pernambuco, Ceará and Paraíba. A total of 60 species of planktonic microcrustaceans were identified, of which 52 were cladocerans and eight were copepods. The basin that presented the highest richness was Pajeú River with 41 species. Nevertheless, the extrapolated number of species shows an increasing tendency for this basin. The genus composition was different between the basins, with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zooplankton; Neotropical; Shallow lakes; Caatinga. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212020000100202 |
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| Tagliarolo, Morgana; Porri, F; Garvie, C D; Lechman, K; Scharler, U M. |
| Zooplankton community composition, biomass and metabolism can vary drastically over space and time in subtropical estuaries. Changing environmental conditions can affect communities differently, depending on the characteristics of the species involved. In the present study, we compared the rates of oxygen consumption of the dominant zooplankton taxa living in permanently open and in temporally open/closed estuaries. The metabolic response was tested at four temperatures experienced by the animals in their natural environment. Zooplankton from the temporally open/closed estuary showed low activation energies and low rate of metabolism at the highest temperature tested. Animals from the permanently open estuary had higher respiration rates at increased... |
| Tipo: Text |
Palavras-chave: Metabolism; Zooplankton; Respiration; Estuary; Thermal sensitivity. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00513/62425/66904.pdf |
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| Allen, Dm; Edwards, D; Feller, Rj; Hutchinson, Se; Ogburnmatthews, V. |
| Unusual events and disturbances are important sources of variability in ecological data sets, but methods for their detection and analysis are not readily available. We have adapted widely-used quality control methods to identify and quantify unusual events in ten-year-long data sets from the relatively pristine North Inlet Estuary, South Carolina, USA.-Seasonal patterns and long-term trends were first removed from biweekly zooplankton and nekton abundance and corresponding water temperature and salinity data using nonparametic smoothing algorithms. The Shewhart Control Chart Method, a quantitative technique used for quality control in industrial manufacturing processes, was used to define four types of events according to intensity and duration.... |
| Tipo: Text |
Palavras-chave: Zooplankton; Nekton; Estuary; Long-term; Disturbance. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/00093/20389/18056.pdf |
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| Carlier, A.; Le Guilloux, E.; Olu, Karine; Sarrazin, Jozee; Mastrototaro, F.; Taviani, M.; Clavier, J.. |
| Cold-water corals (CWC) are frequently reported from deep sites with locally accelerated currents that enhance seabed food particle supply. Moreover, zooplankton likely account for ecologically important prey items, but their contribution to CWC diet remains unquantified. We investigated the benthic food web structure of the recently discovered Santa Maria di Leuca (SML) CWC province (300 to 1100 m depth) located in the oligotrophic northern Ionian Sea. We analyzed stable isotopes (delta C-13 and delta N-15) of the main consumers (including ubiquitous CWC species) exhibiting different feeding strategies, zooplankton, suspended particulate organic matter (POM) and sedimented organic matter (SOM). Zooplankton and POM were collected 3 m above the coral... |
| Tipo: Text |
Palavras-chave: Particulate organic matter; Zooplankton; Stable isotopes; Food web; Mediterranean Sea; Benthic community; Cold water corals. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-7450.pdf |
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| Moriceau, Brivaela; Iversen, Morten H.; Gallinar, Morgane; Evertsen, Antti-jussi O.; Le Goff, Manon; Beker, Beatriz; Boutorh, Julia; Corvaisier, Rudolph; Coffineau, Nathalie; Donval, Anne; Giering, Sarah L. C.; Koski, Marja; Lambert, Christophe; Lampit, Richard S.; Le Mercier, Alain; Masson, Annick; Stibor, Herwig; Stockenreiter, Maria; De La Rocha, Christina L.. |
| The fraction of net primary production that is exported from the euphotic zone as sinking particulate organic carbon (POC) varies notably through time and from region to region. Phytoplankton containing biominerals, such as silicified diatoms have long been associated with high export fluxes. However, recent reviews point out that the magnitude of export is not controlled by diatoms alone, but determined by the whole plankton community structure. The combined effect of phytoplankton community composition and zooplankton abundance on export flux dynamics, were explored using a set of 12 large outdoor mesocosms. All mesocosms received a daily addition of minor amounts of nitrate and phosphate, while only 6 mesocosms received silicic acid (dSi). This resulted... |
| Tipo: Text |
Palavras-chave: Biogenic silica; POC; Marine snow; Zooplankton; Mesocosm; Bay of Hopavagen; Plankton community; Biological pump. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00469/58029/60433.pdf |
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| Quintin, Jean-yves; Sottolichio, Aldo; Derriennic, Herve; Doremus, Sandrine; Agion, Tony; Peset, Sébastien; Hervio Heath, Dominique; Sautour, Benoit; Parra, René; Nowaczyck, Antoine; Bachelet, Guy; Leconte, Michel. |
| Monitoring n° 38 of the BLAYAIS nuclear power plant takes into account studies conducted between April and November 2015. Physicochemistry, Bathymetry, Contaminants, Bacteriology, Zooplankton, Benthic macrofauna, are reported. |
| Tipo: Text |
Palavras-chave: Centrale nucléaire; Pelagos; Physico chimie; Hydrologie; Microbiologie; Estuaire de la Gironde; Surveillance; Bathymétrie; Zooplancton; Macrofaune benthique.; Nuclear power plant; Pelagos; Physico chemistry; Hydrology; Zooplankton; Gironde estuary; Monitoring; Bathymetry; Benthic macrofauna.; Microbiology. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00327/43800/43361.pdf |
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| Dromard, Charlotte R.; Devault, Damien; Bouchon-navaro, Yolande; Allénou, Jean-pierre; Budzinski, Hélène; Cordonnier, Sébastien; Tapie, Nathalie; Reynal, Lionel; Lemoine, Soazig; Thomé, Jean-pierre; Thouard, Emmanuel; Monti, Dominique; Bouchon, Claude. |
| The organochlorine pollution by chlordecone, an insecticide spread in the past in banana plantations, is now recognized as a major ecological, economic, and social crisis in Guadeloupe and Martinique Islands. Due to its physical and chemical properties, this molecule is particularly persistent in the natural environment. Volcanic soil of Guadeloupe and Martinique contain allophanes (amorphous clays), which favor chlordecone trapping due to their structure and physical properties. Thus, with this trapping ability, allophanes serve as a vector allowing chlordecone to contaminate runoff waters and, finally, the sea. In the present publication, several studies recently conducted in the Lesser Antilles have been compiled in order to evaluate the desorption of... |
| Tipo: Text |
Palavras-chave: Organochlorine pollution; Desorption; Allophane; Zooplankton; Trophic food webs; Bioamplification. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00484/59551/62539.pdf |
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| Raybaud, V.; Tunin-ley, A.; Ritchie, M. E.; Dolan, J. R.. |
| Planktonic populations were sampled over a 4 week period in the NW Mediterranean, at a site subject to little vertical advection during the Dynaproc 2 cruise in 2004. The characteristics of the phytoplankton, the tintinnid community and the zooplankton have recently been described in detail. Based on these studies, we compared the characteristics of 3 well-circumscribed assemblages of different trophic levels: Ceratium of the phytoplankton, herbivorous tintinnids of the microzooplankton, and large (> 500 mu m) omnivorous and carnivorous copepods of the metazoan zooplankton. In all three groups, diversity as H' or species richness, was less variable than concentration of organisms. Plotting time against species accumulation, the curves approached plateau... |
| Tipo: Text |
Palavras-chave: Species abundance distributions; Diversity; Zooplankton; Microzooplankton; Phytoplankton; Biodiversity. |
| Ano: 2009 |
URL: https://archimer.ifremer.fr/doc/00208/31970/30411.pdf |
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| Buchet, Vincent; Palvadeau, Hubert; Boussard, O.. |
| Trials on the seabass weaning in atlantic marshes (Roux, 1993), have shown that the use of frozen prey improved this step and reduced his resulting stress. During the present study, which must confirmed these preliminary results, three alimentary sequences were tested. 1) natural zooplankton, weaning pellets, as control, 2) natural zooplankton, inert artemia (intensively produced), weaning pellets, 3) natural zooplankton, natural frozen zooplankton (harvested), weaning pellets. The achieved results show that weaning with intermediary phases (sequences 2 or 3) yield best results. Furthermore the phase with artemia yields, systematically, better results than with harvested zooplankton ; then artemia seems a excellent substitute food representing a... |
| Tipo: Text |
Palavras-chave: Bar; Dicentrarchus labrax; Juvéniles; Elevage extérieur; Sevrage; Artémias; Zooplancton; Seabass; Dicentrarchus labrax; Juvenile; Outdoor rearing; Weaning; Artemia; Zooplankton. |
| Ano: 1995 |
URL: http://archimer.ifremer.fr/doc/00425/53683/54527.pdf |
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| Bojadzija Savic, Gorenka; Bormans, Myriam; Edwards, Christine; Lawton, Linda; Briand, Enora; Wiegand, Claudia. |
| Due to eutrophication, freshwater ecosystems frequently experience cyanobacterial blooms, many of which produce bioactive metabolites that can affect vertebrates and invertebrates life traits. Zooplankton are able to develop tolerance as a physiological response to cyanobacteria and their bioactive compounds, however, this comes with energetic cost that in turn influence Daphnia life traits and may impair populations. Vice versa, it has been suggested that Daphnia are able to reduce cyanobacterial dominance until a certain cyanobacterial density; it remains unclear whether Daphnia metabolites alone influence the physiological state and bioactive metabolites production of cyanobacteria. Hence, this study investigates mutual physiological reactions of toxic... |
| Tipo: Text |
Palavras-chave: Zooplankton; Cyanobacteria; Secondary metabolites; PCC7806; Toxic; Oxidative stress. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00624/73653/76105.pdf |
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| Beaudouin, Jacqueline. |
| Sampling was carried out during 1970 at 22 stations from 72 degree -62 degree N; the sampling period varied from 21 minutes - 42minutes. 12 species of zooplankton were recovered consisting of specimens of copepods, euphausiids, chaetognathes, medusae, amphipods, pteropods and decapods. They were most abundant in the central zone, especially in 2 areas of maximum concentration (where the catch exceeded 100 cm super(3)) located 72 degree N and 67 degree N. Fish captured included young cod, rockfish and halibut; they were found mostly around these areas of maximum zooplankton concentrations. Only immature fish were recovered in this region; the adults had deserted these waters due to unusual and permanent low temperature water in the superficial layers. |
| Tipo: Text |
Palavras-chave: Greenland; Davies strait; Hydrology; Trophic interaction; Fishes; Zooplankton. |
| Ano: 1973 |
URL: http://archimer.ifremer.fr/doc/1973/publication-2225.pdf |
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| Gaudy, R; Pagano, M. |
| The zooplankton of an eutrophic brackish lagoon (Etang de Berre), near Marseille (France) was studied during an annual cycle. It was characterized by large populations of a pelagic copepod (Acartia tonsa ). Grazing on natural particles by this species was investigated. Adults were able to use an extended range of particle sizes, but showed selectivity for particles concentration was observed (14 mu m). Temperature and particles concentration appear to modify the selectivity behavior. Juvenile stages could also catch particles of various size but did not show the same selectivity for the peak particles as adults. Daily food ration was high comparatively to open-sea copepods. Taking into account several results obtained on food ration, egg production and... |
| Tipo: Text |
Palavras-chave: Copepoda; Lagoons; Energy budget; Seasonal variations; Particle concentration; Zooplankton; Food availability; Temperature effects; Nutrition. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/acte-1526.pdf |
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| Le Fevre-lehoerff, Geneviève; Ibanez, Frédéric; Poniz, Paola; Fromentin, Jean-marc. |
| Planktonic time series collected since 1975 off Gravelines, France, were analysed in the context of climatic changes. Principal component analysis and the cumulative sums method wereapplied to 30 data sets which included meteorological and hydrological parameters and planktonic descriptors. Eight groups of biological descriptors were linked to external parameters. The study of winds highlighted the importance of cyclonic and anticyclonic influences. Seven year cycles appeared clearly in air temperature and in species abundance with different trophic levels for species such as Ternora longicornis, Oikopleura dioica and Sagitta setosa, whereas an 11 yr cycle appeared for Pseudocalanus minutus. A 3 to 4 yr cycle was detected for atmospheric pressure,... |
| Tipo: Text |
Palavras-chave: Time series; Zooplankton; Meteorology; Hydrology; Southern North Sea. |
| Ano: 1995 |
URL: http://archimer.ifremer.fr/doc/00033/14455/11757.pdf |
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| Bergeron, Jean-pierre; Herbland, Alain. |
| Estimates of carbohydrate assimilation within the mesozooplankton compartment are a fundamental concern in oceanography because they give a general expression of the biologically-regulated incorporation of metabolic fuel produced from inorganic nutrients by phytoplankton in the sea. A new tool is proposed for the assessment of such processes. It is based on the measurement of the activity of an enzyme, pyruvate kinase (PK), on samples of the whole mesozooplankton community. Here, the results are presented of an early attempt at such an implementation in the Bay of Biscay (north-east Atlantic) in springtime. A main area situated in front of an estuary (Gironde) has been extensively studied-the same sampling grid was covered on three occasions (two 20 day... |
| Tipo: Text |
Palavras-chave: Bay of Biscay; Zooplankton; Phytoplankton; Pyruvate kinase; Carbohydrate. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/publication-452.pdf |
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| Collos, Yves; Husseini Ratrema, Julie; Bec, Béatrice; Vaquer, André; Hoai, Thong Lam; Rougier, Claude; Pons, Virginie; Souchu, Philippe. |
| The dilution technique was used to estimate chlorophyll and pheopigment, net and gross production as well as zooplankton grazing over a 12-month period in a coastal lagoon in Southern France. Chlorophyll a (Cha) based gross growth rates of phytoplankton ranged from undetectable in February to 2.6 day(-1) in June, corresponding to 3.8 divisions per day. Cha-based grazing rates ranged from undetectable in February to 1.1 d(-1) in June. The seasonal growth pattern of picoplankton was similar to that of the whole community, with a peak in July, corresponding to four divisions per day. Grazing processes represented from 20 to 150% of the phytoplankton daily growth, and the grazing pressure was stronger on small phytoplankton cells than on larger cells. Gross... |
| Tipo: Text |
Palavras-chave: Zooplankton; Ammonium; Pheopigments; Degradation; Growth; Phytoplankton. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-727.pdf |
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| Rumebe, Myriam; Auby, Isabelle; Blanchet, Hugues; Fouet, Marie; Gouriou, Laure; Hervio Heath, Dominique; Sautour, Benoit; Savoye, Nicolas; Sottolichio, Aldo. |
| Monitoring n° 41 of the Blayais nuclear power plant takes into account studies conducted between April and November 2018. Physicochemistry, Bathymetry, Hydrobiology, Bacteriology, Zooplankton, Benthic macrofauna, are reported. |
| Tipo: Text |
Palavras-chave: Centrale nucléaire; Pelagos; Physico chimie; Hydrologie; Microbiologie; Estuaire de la Gironde; Surveillance; Bathymétrie; Zooplancton; Macrofaune benthique; Nuclear power plant; Pelagos; Physico chemistry; Hydrology; Zooplankton; Gironde estuary; Monitoring; Bathymetry; Microbiology; Benthic macrofauna. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00505/61660/65576.pdf |
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| Gaudy, R; Youssara, F; Diaz, F; Raimbault, P. |
| Zooplankton biomass was measured at 20 stations located along five coastal-offshore transects in the Gulf of Lions (NW Mediterranean) during spring 1998 and winter 1999, using two nets equipped with 200 and 80 Pm mesh. Biomass was twice as abundant in spring. It increased toward the coast and the west of the gulf and was positively correlated to chlorophyll, primary production and organic particulate matter and negatively to temperature and salinity. The enrichment effect of Rhone river input and the oligotrophic influence of the north Mediterranean current (NMC) were the main distribution factors of zooplankton biomass. Higher biomass was obtained in coastal stations with the 80 mum net, which sampled more efficiently young larval stages and nauplii.... |
| Tipo: Text |
Palavras-chave: Zooplankton; Métabolisme; Cycle saisonnal; Golfe du Lion; Zooplankton; Metabolism; Seasonal cycle; Gulf of Lions. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00321/43262/42993.pdf |
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| Quintin, Jean-yves; Castaing, Patrick; Jouanneau, Jean-marie; Oggian, Georges; Leconte, Michel; Parra, René; Sautour, Benoît; Bachelet, Guy; Chaurial, Bernard; Gournier, Nathalie. |
| Monotoring n° 27 of the BLAYAIS nuclear power plant takes into account studies conducted between March and November 2004. Physicochemistry, Hydrobiology, Bacteriology, Zooplankton, Benthic macrofauna, Bathymetry, are reported. |
| Tipo: Text |
Palavras-chave: Bathymetry; Benthic macrofauna; Zooplankton; Bacteriology; Hydrobiology; Physicochemistry; Pelagos; Monitoring; Gironde estuary; Nuclear power plant; Bathymétrie; Macrofaune benthique; Zooplancton; Microbiologie; Hydrologie; Physico chimie; Pelagos; Surveillance; Estuaire de la Gironde; Centrale nucléaire. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/rapport-1024.pdf |
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| Registros recuperados: 242 | |
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