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Registros recuperados: 75
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A mathematical model to estimate the volume of grey water of pesticide mixtures. Repositório Alice
PARAIBA, L. C.; PAZIANOTTO, R. A. A.; LUIZ, A. J. B.; MAIA, A. de H. N.; JONSSON, C. M..
2013
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Herbicida; Cana de açúcar; Modelo matemático; Sugarcane; Herbicides; Water footprint; Freshwater; Mathematical model.
Ano: 2013 URL: http://www.alice.cnptia.embrapa.br/handle/doc/970136
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A new species of Bryconops (Ostariophysi: Characiformes: Characidae) from the upper rio Tocantins drainage, Brazil Neotropical Ichthyology
Guedes,Tharles L. O.; Oliveira,Everton F.; Lucinda,Paulo H. F..
ABSTRACT A new species of the genus Bryconops , subgenus Bryconops , is described from the rio Conceição, a tributary to the rio Palma, upper rio Tocantins drainage, Tocantins State, Brazil. The new species is distinguished from all its congeners, except B. humeralis and B. vibex by the color pattern in vivo (dorsal, adipose, and caudal fins entirely orange). The new species is easily distinguished from B. humeralis and B. vibex by the absence of a humeral spot and by the lack of maxillary teeth (vs . presence of a single humeral spot and presence of 1-3 maxillary teeth on both sides). Furthermore, the new species is distinguished from B. vibex by the number of perforated lateral line scales (38-41 vs. 44-46).
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biodiversity; Freshwater; Rio Conceição; Systematics; Taxonomy.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000200220
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A new species of Echinogammarus Stebbing, 1899 (Crustacea, Amphipoda) from Moroccan freshwaters Naturalis
Fadil, Fatima; Dakki, Mohamed.
Systematic sampling has proved that members of the genus Echinogammarus are known from limited areas of Morocco. In this paper, we describe a new species of Echinogammarus (Crustacea, Amphipoda): Echinogammarus oujdae n. sp. from freshwater of the northeastern region with remarks on its affinities and ecology.
Tipo: Article / Letter to the editor Palavras-chave: Amphipoda; Echinogammarus; Systematics; Freshwater; Morocco.
Ano: 2003 URL: http://www.repository.naturalis.nl/record/504766
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A new species of Roeboides (Teleostei: Characidae) from Costa Rica and Panama, with a key to the middle American species of the genus Neotropical Ichthyology
Matamoros,Wilfredo A.; Chakrabarty,Prosanta; Angulo,Arturo; Garita-Alvarado,Carlos A.; McMahan,Caleb D..
A new species of Roeboides is described from the Pacific slope of Costa Rica and Panama. Roeboides bussingi differs from all other Central American Roeboides and all members of the R. guatemalensis species group by the following combination of characters: presence of 18-22 scales above the lateral line (vs. 12-16 in R. dientito); 15-22 scales below the lateral line (vs. 10-14 in R. dientito, and 20-24 in R. loftini); an inconspicuous, sometimes absent, crescent-shaped humeral spot (vs. a large round, conspicuous humeral spot in R. carti, R. dayi, R. dientonito, R. ilseae, R. loftini,and R. occidentalis); a small wedge-shaped spot that does not reach the lateral line (vs. a large spot crossing the lateral line in R. guatemalensis); a teardrop shaped caudal...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Central America; Characinae; Distribution; Freshwater; Pacific Slope.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000200285
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A new species of sand-dwelling catfish, with a phylogenetic diagnosis of Pygidianops Myers (Siluriformes: Trichomycteridae: Glanapteryginae) Neotropical Ichthyology
Pinna,Mário C. C. de; Kirovsky,Alexandre L..
A new species of sand-dwelling catfish genus Pygidianops, P. amphioxus, is described from the Negro and lower Amazon basins. The new species differs from its three congeners in the elongate eel-like body, the short barbels, and the small caudal fin, continuous with the body, among other traits of internal anatomy. The absence of anal fin further distinguishes P. amphioxus from all other Pygidianops species except P. magoi and the presence of eyes from all except P. cuao. The new Pygidianops seems to be the sister species to P. magoi, the two species sharing a unique mesethmoid with a dorsally-bent tip lacking cornua, and a produced articular process in the palatine for the articulation with the neurocranium. Pygidianops amphioxus is a permanent and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biodiversity; Freshwater; Psammophyly; Systematics; Teleostei.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000300004
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A new species of sexually dimorphic Pareiorhaphis Miranda Ribeiro, 1918 (Siluriformes: Loricariidae) from the rio Doce basin, Brazil Neotropical Ichthyology
Pereira,Edson H. L.; Vieira,Fábio; Reis,Roberto E..
Pareiorhaphis nasuta, a new neoplecostomine catfish of the family Loricariidae is described. The species was collected from headwaters of the rio Matipó, tributary of the upper rio Doce basin in State of Minas Gerais, Brazil. The new species is readily diagnosed from all remaining congeners by the longer snout and by the smaller orbital diameter. The new species is the first representative of the genus Pareiorhaphis discovered in the rio Doce basin, thus expanding its geographic distribution. A phylogenetic diagnosis for Pareiorhaphis is presented.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Freshwater; Taxonomy; Systematics; Neotropical; Catfish.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000400003
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A new species of the armored catfish Parotocinclus (Loricariidae: Hypoptopomatinae), from the Amazon basin in Colombia Neotropical Ichthyology
Lehmann A.,Pablo; Schvambach,Lucas J.; Reis,Roberto E..
A new species of hypoptopomatine cascudinho is described from a creek tributary to the Amazon River in Leticia, Amazonas Departament, Colombia. The new species of Parotocinclus is distinguished from congeners from northeastern to southeastern Brazilian rivers in having the cheek canal plate elongated posteriorly on the ventral surface of head and contacting the cleithrum. It is diagnosed from P. collinsae (Essequibo River basin, Guiana) and P. halbothi (rio Trombetas basin, Brazil and Marowijne River, Suriname), by having a triangular patch of dark pigmentation on the anterior portion of the dorsal-fin membrane, by the absence of unicuspid accessory teeth on both the premaxilla and dentary, and by having a Y-shaped light mark on the snout. The new species...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biodiversity; Freshwater; Leticia; Systematics; Taxonomy.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000100047
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A systematic revision of Tatia (Siluriformes: Auchenipteridae: Centromochlinae) Neotropical Ichthyology
Sarmento-Soares,Luisa Maria; Martins-Pinheiro,Ronaldo Fernando.
The auchenipterid catfish genus Tatia is revised. Twelve species are recognized including three described as new. Tatia is diagnosed by the hyomandibula elongated anterodorsally, the anal-fin base of adult males reduced in length, and the caudal peduncle laterally compressed and deep with a middorsal keel. Tatia aulopygia occurs in the Madeira river drainage and is distinguished by the reduced cranial fontanel in adults and male modified anal fin with middle rays reduced in length. Tatia boemia, known from the upper Uruguay river drainage, is distinguished by its unique color pattern with dark chromatophores on the sides of body. Tatia brunnea from river basins in Suriname and French Guiana and the Negro river drainage, Amazon basin, is recognized by its...
Tipo: Info:eu-repo/semantics/article Palavras-chave: South America; Freshwater; Catfish; Taxonomy; Centromochlus.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000300022
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Abundancia y distribución de las especies ícticas (Osteichthyes) del río San Francisco-Cosquín, Córdoba, Argentina Iheringia, Sér. Zool.
Hued,Andrea Cecilia; Bistoni,María de los Ángeles.
It was made the characterization of the San Francisco-Cosquín Mountain River fish community, Córdoba, Argentina. Samples of fish were taken from selected sites from November 1998 to November 1999. Eleven species were recorded, eight of which are first reports for this river. Relative abundance for each species, species richness, diversity and dominance were estimated. Bryconamericus iheringi (Boulenger, 1887) y Jenynsia multidentata (Jenyns, 1842) were the most abundant.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; Freshwater; Community attributes.
Ano: 2001 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212001000200010
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ALGAL STUDIES IN BOLIVIA: A COMPILATION AND PRELIMINARY ANALYSIS OF EXISTING PHYCOLOGICAL LITERATURE Gayana Botánica
Morales,Eduardo A; Fernández,Erika; Fernandez,Carla E; Lizarro,Dennis; Alcoreza,Pamela.
A compilation of phycological literature published on Bolivian algae is presented together with an analysis of strengths, weaknesses, and needs in this field of investigation. An analysis of the nationality of authors, type, content, and geographic focus of the references shows that literature is largely produced by foreign scientist, concentrated on just a few areas of the country, or are biased toward particular algal groups, leaving ample room for more exploration. The Altiplano (high mountain plateau) and Amazon concentrate most of the publications, the phytoplankton and algae found in sediment cores, being the communities that have received more attention from scientists. Taxonomic references focus more on phytoplankton and tychoplankton communities...
Tipo: Journal article Palavras-chave: Bolivia; Phycology; Algae; Freshwater.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-66432008000100009
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An assessment of the Arctic Ocean in a suite of interannual CORE-II simulations. Part II: Liquid freshwater ArchiMer
Wang, Qiang; Ilicak, Mehmet; Gerdes, Ruediger; Drange, Helge; Aksenov, Yevgeny; Bailey, David A.; Bentsen, Mats; Biastoch, Arne; Bozec, Alexandra; Boening, Claus; Cassou, Christophe; Chassignet, Eric; Coward, Andrew C.; Curry, Beth; Danabasoglu, Gokhan; Danilov, Sergey; Fernandez, Elodie; Fogli, Pier Giuseppe; Fujii, Yosuke; Griffies, Stephen M.; Iovino, Doroteaciro; Jahn, Alexandra; Jung, Thomas; Large, William G.; Lee, Craig; Lique, Camille; Lu, Jianhua; Masina, Simona; Nurser, A. J. George; Rabe, Benjamin; Roth, Christina; Salas Y Melia, David; Samuels, Bonita L.; Spence, Paul; Tsujino, Hiroyuki; Valcke, Sophie; Voldoire, Aurore; Wang, Xuezhu; Yeager, Steve G..
The Arctic Ocean simulated in 14 global ocean-sea ice models in the framework of the Coordinated Ocean-ice Reference Experiments, phase II (CORE-II) is analyzed in this study. The focus is on the Arctic liquid freshwater (FW) sources and freshwater content (FWC). The models agree on the interannual variability of liquid FW transport at the gateways where the ocean volume transport determines the FW transport variability. The variation of liquid FWC is induced by both the surface FW flux (associated with sea ice production) and lateral liquid FW transport, which are in phase when averaged on decadal time scales. The liquid FWC shows an increase starting from the mid-1990s, caused by the reduction of both sea ice formation and liquid FW export, with the...
Tipo: Text Palavras-chave: Arctic Ocean; Freshwater; Sea ice; CORE II atmospheric forcing.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00313/42463/41835.pdf
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Arctic Ocean freshwater content and its decadal memory of sea-level pressure ArchiMer
Johnson, Helen L.; Cornish, Sam B.; Kostov, Yavor; Beer, Emma; Lique, Camille.
Arctic freshwater content (FWC) has increased significantly over the last two decades, with potential future implications for the Atlantic meridional overturning circulation downstream. We investigate the relationship between Arctic FWC and atmospheric circulation in the control run of a coupled climate model. Multiple linear lagged regression is used to extract the response of total Arctic FWC to a hypothetical step increase in the principal components of sea‐level pressure. The results demonstrate that the FWC adjusts on a decadal timescale, consistent with the idea that wind‐driven ocean dynamics and eddies determine the response of Arctic Ocean circulation and properties to a change in surface forcing, as suggested by idealized models and theory....
Tipo: Text Palavras-chave: Arctic Ocean; Climate change; Interannual variability; Freshwater; Adjustment timescales; Ocean dynamics.
Ano: 2018 URL: https://archimer.ifremer.fr/doc/00440/55117/56571.pdf
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Assessing Future Ecosystem Services: a Case Study of the Northern Highlands Lake District, Wisconsin Ecology and Society
Peterson, Garry D; McGill University; garry.peterson@mcgill.ca; Beard Jr., T. Douglas; Wisconsin Department of Natural Resources; BEARDT@dnr.state.wi.us; Beisner, Beatrix E; University of Wisconsin-Madison; bebeisner@facstaff.wisc.edu; Bennett, Elena M; University of Wisconsin-Madison; embennett@wisc.edu; Carpenter, Stephen R; University of Wisconsin-Madison; srcarpen@wisc.edu; Cumming, Graeme; University of Florida; cummingg@wec.ufl.edu; Dent, C. Lisa; University of Wisconsin-Madison; ldent@facstaff.wisc.edu,; Havlicek, Tanya D; University of Wisconsin-Madison; TDHAVLIC@students.wisc.edu.
The Northern Highlands Lake District of Wisconsin is in transition from a sparsely settled region to a more densely populated one. Expected changes offer benefits to northern Wisconsin residents but also threaten to degrade the ecological services they rely on. Because the future of this region is uncertain, it is difficult to make decisions that will avoid potential risks and take advantage of potential opportunities. We adopt a scenario planning approach to cope with this problem of prediction. We use an ecological assessment framework developed by the Millennium Ecosystem Assessment to determine key social and ecological driving forces in the Northern Highlands Lake District. From these, we describe three alternative scenarios to the year 2025 in which...
Tipo: Peer-Reviewed Reports Palavras-chave: Northern Highlands Lake District; Wisconsin; Assessment; Ecosystem services; Freshwater; Futures; Prediction; Scenario planning.
Ano: 2003
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Astyanax henseli, a new name for Tetragonopterus aeneus Hensel, 1870 from southern Brazil (Teleostei: Characiformes) Neotropical Ichthyology
Melo,Filipe A. G. de; Buckup,Paulo A..
Tetragonopoterus aeneus Hensel (1870) is removed from synonymy with Astyanax fasciatus (Cuvier, 1819), revalidated and redescribed as A. henseli to avoid homonymy. Astyanax henseli differs from A. fasciatus stricto sensu and other Astyanax species by the presence of two to four maxillary teeth, two vertically-elongated humeral spots, dentary tooth cusps positioned close to one another, and the slender form of the dentary teeth.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Taxonomy; Astyanax fasciatus; Species complex; Rio Jacuí; Fish; Freshwater.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000100003
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Astyanax paranae Eigenmann, 1914 (Characiformes: Characidae) in the Alagados Reservoir, Paraná, Brazil: diet composition and variation Neotropical Ichthyology
Abelha,Milza Celi Fedatto; Goulart,Erivelto; Kashiwaqui,Elaine Antoniassi Luiz; Silva,Marlene Rodrigues da.
Aspects of the feeding ecology of a small characin, Astyanax paranae, were studied during 1996/1997 and 1998/1999 in the Alagados Reservoir, Paraná, Brazil (25º01'50.0'' S; 050º03'41.9'' W). Fishes were quarterly captured from the reservoir's riverine and lacustrine zones and stomachs contents of 711 adult individuals were analyzed by volumetric method. Species' feeding spectrum and spatial, temporal and sexual variations on diet were evaluated. Data matrix was summarized by detrented correspondence analysis (DCA) and the axes scores from DCA were used as variables in one-way ANOVA of null models to test diet variations. Astyanax paranae fed on detritus/sediment, plant matter, algae and aquatic and terrestrial invertebrates. The time-space prevalence of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fish; Feeding; Dam; Detritivory; Freshwater.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000300006
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Biodiversity and ecology of the parasitic infracommunities of Loricaria prolixa (Siluriformes: Loricariidae) from the Tietê-Batalha Basin, SP, Brazil Biological Sciences
Pelegrini, Larissa Sbeghen; Januário, Felipe Freitas; Azevedo, Rodney Kozlowisky de; Abdallah, Vanessa Doro.
  The parasitic biodiversity of the Loricaria prolixa, an endemic fish from the Paraná and Prata basins was studied and analyzed the parasitic’s communities dynamics and their ecological relations with this host. Samples were collected in the Batalha River and 39 specimens were analyzed from 2014 to 2016. All fishes were parasitized. The component community was composed by twelve species with 8694 metazoan found on the surface, gills, eyes, brain, intestine and blood of the hosts. Demidospermus spirophallus, Diplostomidae gen. sp., Rhabdochona kidderi and Oligobdella sp. showed higher values for the parasitism's ecological descriptors, and were centrals and dominants species. The infracommunities were characterized by specific richness smaller in relation...
Tipo: Info:eu-repo/semantics/article Palavras-chave: 2.13.02.02-2; 2.13.01.02-6 catfishes; Fish parasites; Freshwater; Biological diversity. Helmintologia animal; Protozoologia parasitária animal.
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/36294
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CMIP5 Model Intercomparison of Freshwater Budget and Circulation in the North Atlantic ArchiMer
Deshayes, Julie; Curry, Ruth; Msadek, Rym.
The subpolar North Atlantic is a center of variability of ocean properties, wind stress curl, and air-sea exchanges. Observations and hindcast simulations suggest that from the early 1970s to the mid-1990s the subpolar gyre became fresher while the gyre and meridional circulations intensified. This is opposite to the relationship of freshening causing a weakened circulation, most often reproduced by climate models. The authors hypothesize that both these configurations exist but dominate on different time scales: a fresher subpolar gyre when the circulation is more intense, at interannual frequencies (configuration A), and a saltier subpolar gyre when the circulation is more intense, at longer periods (configuration B). Rather than going into the detail of...
Tipo: Text Palavras-chave: Atmosphere-ocean interaction; Freshwater; Climate models; Model comparison; Climate variability; North Atlantic Oscillation.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00199/31024/29429.pdf
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Community of Monogenea in populations of Cichla monoculus from two tributaries of the Amazon River in the Northern Brazil. Repositório Alice
OLIVEIRA, M. S. B.; ADRIANO, A. E.; TAVARES-DIAS, M.; CORRÊA, L. L..
This study compared the monogeneans community in C. monoculus from the Tapajós River (state of Pará) and Jari River (state of Amapá), northern Brazil. A total of 2188 monogeneans belonging to eight taxa were collected from the gills of fi sh: Gussevia arilla, Gussevia longihaptor, Gussevia tucunarense, Gussevia undulata, Sciadicleithrum ergensi, Sciadicleithrum umbilicum, Sciadicleithrum uncinatum and Tucunarella cichlae. Gussevia arilla was the dominant species for C. monoculus from the Tapajós River basin, while S. umbilicum predominated among the hosts from the Jari River basin. For the two populations of C. monoculus, the prevalence, mean intensity and mean abundance of monogeneans were different and the of parasites community had a high qualitative...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Rio Jari; Rio Tapajós; Parasito de Animal; Peixe de Água Doce; Tucunaré; Ectoparasites; Freshwater; Monogenea.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1108486
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Considerations regarding the dominance of Cylindrospermopsis raciborskii under low light availability in a low phosphorus lake Acta Botanica
Tonetta,Denise; Hennemann,Mariana Coutinho; Brentano,Débora Monteiro; Petrucio,Mauricio Mello.
ABSTRACTAlthough many studies have shown that the dispersion, increased abundance and dominance of cyanobacteria can be attributed to nutrient enrichment, we discuss features contributing to the dominance of Cylindrospermopsis raciborskii in a shallow, polymictic, subtropical coastal lake with low phosphorus and light limitation (Peri Lake). The presence and dominance of C. raciborskii in an environment with such characteristics emphasizes the idea that nutrients alone do not explain the high density of this cyanobacterium. Other features should be considered in explaining this species dominance, such as phosphorus storage and physiological flexibilitywhich seem to be key features to high densities in low phosphorus systems.
Tipo: Info:eu-repo/semantics/other Palavras-chave: Cyanobacteria; Cyanotoxins; Freshwater; Nutrients; Peri Lake; Phytoplankton; Plasticity; Subtropical.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062015000300448
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Diet and dental development of three species of Roeboides (Characiformes: Characidae) Neotropical Ichthyology
Novakowski,Gisele Caroline; Fugi,Rosemara; Hahn,Norma Segatti.
Lepidophagy has been recorded in various species of Roeboides. In this study we analyzed ontogenetic variation in diet and dental development of three Roeboides species (R. paranensis, R. prognathus and R. microlepis). Roeboides paranensis consumed mainly insects, scales and microcrustaceans, and the smaller individuals (<3.4 cm - SL) consumed mostly insects. Scale were only consumed by individuals greater than 3.4 cm. Scales were the dominant item in the diet in all sizes of R. prognathus. The diet of R. microlepis was composed primarily of whole fishes, however, the smaller individuals (<5.4 cm) consumed only insects. During ontogeny, exterior migration of teeth in the mouth started at 3.7 cm in R. paranensis and 6.5 cm in R. microlepis. As body...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Roeboides; Lepidophagy; Freshwater; Reservoir.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000300008
Registros recuperados: 75
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