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| Registros recuperados: 5.225 | |
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| PEREIRA, F. de M.; LOPES, M. T. do R.; SOUZA, B. de A.. |
| Você sabe que as abelhas são insetos? Os insetos são os seres mais adaptados do planeta e considerados a forma de vida dominante na Terra! Isso porque existem mais de setecentas mil espécies de insetos. São tantos e com formas de corpo tão diferentes que às vezes é difícil reconhecê-los. Mas todos eles têm algumas características em comum. Você quer saber o que abelha, borboleta, gafanhoto, pulga, formiga e mosca têm em comum? Todos têm um par de antena, três pares de pernas e um esqueleto externo, chamado de exoesqueleto. Existem outras semelhanças e várias diferenças. Alguns insetos, como o mosquito da dengue, causam doenças e são nocivos. Mas a maioria tem um importante papel na vida humana e de outros animais. Entre os insetos importantes, as abelhas... |
| Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) |
Palavras-chave: Abelha; Inseto; Meio Ambiente; Honey bees; Insects; Environment. |
| Ano: 2020 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1124768 |
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| Rufino, Marta; Bez, Nicolas; Brind'Amour, Anik. |
| Spatial indicators are widely used to monitor species and are essential to management and conservation. In the present study, we tested the ability of 11 spatial indicators to quantify changes in species’ geographic patterns: (1) spatial displacement of a patch of biomass (‘shift’), (2) a spatial decrease in a patch, accompanied either by a loss of biomass (‘shrink0’) or (3) a relocation of the same biomass (‘shrink1’), and (4) splitting of a patch into smaller patches (‘split’). The geographic changes were simulated by manipulating the spatial distributions of the demersal species (observed during bottom trawl surveys). Hence, the spatial distributions of the latter being used as input data on which the manipulations were done. Additionally, other aspects... |
| Tipo: Text |
Palavras-chave: Spatial metrics; Monitoring; Marine conservation; Fisheries management. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00625/73684/73148.pdf |
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| Krichen, Emna; Rapaport, A.; Fouilland, Eric. |
| We address the problem of determining functional framing from experimental data points in view of robust time-varying predictions, which is of crucial importance in bioprocess monitoring. We propose a method that provides guaranteed functional bounds, instead of sets of parameters values for growth functions such as the classical Monod or Haldane functions commonly used in bioprocess modeling. We illustrate the applicability of the method with bioreactor simulations in batch and continuous mode, as well as on real data. We also present two extensions of the method adding flexibility in its application, and discuss its efficiency in providing guaranteed state estimations. |
| Tipo: Text |
Palavras-chave: Functional estimation; Interval observers; Growth functions; Least square. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00609/72149/73205.pdf |
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| Margirier, Félix; Testor, Pierre; Heslop, Emma; Mallil, Katia; Bosse, Anthony; Houpert, Loïc; Mortier, Laurent; Bouin, Marie-noëlle; Coppola, Laurent; D’ortenzio, Fabrizio; Durrieu De Madron, Xavier; Mourre, Baptiste; Prieur, Louis; Raimbault, Patrick; Taillandier, Vincent. |
| The Mediterranean Sea is a hotspot for climate change, and recent studies have reported its intense warming and salinification. In this study, we use an outstanding dataset relying mostly on glider endurance lines but also on other platforms to track these trends in the northwestern Mediterranean where deep convection occurs. Thanks to a high spatial coverage and a high temporal resolution over the period 2007–2017, we observed the warming (+0.06 ∘C year−1) and salinification (+0.012 year−1) of Levantine Intermediate Water (LIW) in the Ligurian Sea. These rates are similar to those reported closer to its formation area in the Eastern Mediterranean Sea. Further downstream, in the Gulf of Lion, the intermediate heat and salt content were exported to the deep... |
| Tipo: Text |
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| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00663/77507/79256.pdf |
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| Guillier, Laurent; Gourmelon, Michele; Lozach, Solen; Cadel-six, Sabrina; Vignaud, Marie-léone; Munck, Nanna; Hald, Tine; Palma, Federica. |
| The partitioning of pathogenic strains isolated in environmental or human cases to their sources is challenging. The pathogens usually colonize multiple animal hosts, including livestock, which contaminate the food-production chain and the environment (e.g. soil and water), posing an additional public-health burden and major challenges in the identification of the source. Genomic data opens up new opportunities for the development of statistical models aiming to indicate the likely source of pathogen contamination. Here, we propose a computationally fast and efficient multinomial logistic regression source-attribution classifier to predict the animal source of bacterial isolates based on ‘source-enriched’ loci extracted from the accessory-genome profiles... |
| Tipo: Text |
Palavras-chave: Environmental contamination; Multinomial logistic regression; Pangenome-wide enrichment analysis; Source attribution; Salmonella Typhimurium.. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00624/73632/73072.pdf |
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| Martins,Mila Ferraz de Oliveira; Thomazini,Marcílio José; Baretta,Dilmar; Brown,George Gardner; Rosa,Marcio Gonçalves da; Zagatto,Mauricio Rumenos Guidetti; Santos,Alessandra; Nadolny,Herlon Sérgio; Cardoso,Guilherme Borges Xarão; Niva,Cintia Carla; Bartz,Marie Luise Carolina; Feitosa,Rodrigo Machado. |
| Abstract: Several studies have characterized and delimited subterranean ant assemblages. Soil extraction, one of the methods employed to access this fauna, employs the removal of monoliths. One of the most widely used methods for the extraction of soil sampling is called TSBF (developed by the Tropical Soil Biology and Fertility Programme). This method provides relevant data about the species associated with the soil. In the present study we characterized assemblages of subterranean ants using the TSBF method in different subtropical areas of the Neotropics. We considered two sampling designs in different localities. The first design resulted in 315 TSBF samples obtained from layers at distinct depths. The second design resulted in 270 TSBF samples and 270... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil; Hypogaeic; Brazil; Monoliths; Pitfall. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032020000100206 |
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| Ayache, Nour; Hervé, Fabienne; Lundholm, Nina; Amzil, Zouher; Caruana, Amandine. |
| oxic Pseudo‐nitzschia australis strains isolated from French coastal waters were studied to investigate their capacity to adapt to different salinities. Their acclimation to different salinity conditions (10, 20, 30, 35 and 40) was studied on growth, photosynthetic capacity, cell biovolume and domoic acid (DA) content. The strains showed ability to acclimate to a salinity range from 20 to 40, with optimal growth rates between salinities 30 and 40. The highest cell biovolume was observed at the lowest salinity 20 and was associated with the lowest growth rate. Salinity did not affect the photosynthetic activity; Fv/Fm values and the pigment contents remained high with no significant difference among salinities. An enhanced production of zeaxanthin was,... |
| Tipo: Text |
Palavras-chave: Acclimation; Climate change; Domoic acid; Pseudo-nitzschia australis; Physiology; Salinity. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00585/69684/67552.pdf |
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| Juhel, Jean-baptiste; Utama, Rizkie S.; Marques, Virginie; Vimono, Indra B.; Sugeha, Hagi Yulia; Kadarusman,; Pouyaud, Laurent; Dejean, Tony; Mouillot, David; Hocdé, Régis. |
| Environmental DNA (eDNA) has the potential to provide more comprehensive biodiversity assessments, particularly for vertebrates in species-rich regions. However, this method requires the completeness of a reference database (i.e. a list of DNA sequences attached to each species), which is not currently achieved for many taxa and ecosystems. As an alternative, a range of operational taxonomic units (OTUs) can be extracted from eDNA metabarcoding. However, the extent to which the diversity of OTUs provided by a limited eDNA sampling effort can predict regional species diversity is unknown. Here, by modelling OTU accumulation curves of eDNA seawater samples across the Coral Triangle, we obtained an asymptote reaching 1531 fish OTUs, while 1611 fish species... |
| Tipo: Text |
Palavras-chave: EDNA metabarcoding; Sequence clustering; Operational Taxonomic Unit; Diversity assessment; Detectability. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00640/75232/79601.pdf |
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| Nezlin, Nikolay P.; Dever, Mathieu; Halverson, Mark; Leconte, Jean-michel; Maze, Guillaume; Richards, Clark; Shkvorets, Igor; Zhang, Rui; Johnson, Greg. |
| This study demonstrates the long-term stability of salinity measurements from Argo floats equipped with inductive conductivity cells, which have extended float lifetimes as compared to electrode-type cells. New Argo float sensor payloads must meet the demands of the Argo governance committees before they are implemented globally. Currently, the use of CTDs with inductive cells designed and manufactured by RBR Ltd., has been approved as a Global Argo Pilot. One requirement for new sensors is to demonstrate stable measurements over the lifetime of a float. To demonstrate this, data from four Argo floats in the western Pacific Ocean equipped with the RBRargo CTD sensor package are analyzed using the same Owens-Wong-Cabanes (OWC) method and reference datasets... |
| Tipo: Text |
Palavras-chave: Pacific Ocean; Salinity; Instrumentation/sensors; Profilers; Oceanic; Quality assurance/control. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00654/76568/77698.pdf |
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| Registros recuperados: 5.225 | |
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