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| Registros recuperados: 2.625 | |
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| Desbruyères, Damien; Chafik, Léon; Maze, Guillaume. |
| The Subpolar North Atlantic is known for rapid reversals of decadal temperature trends, with ramifications encompassing the large-scale meridional overturning and gyre circulations, Arctic heat and mass balances, or extreme continental weather. Here, we combine datasets derived from sustained ocean observing systems (satellite and in situ), idealized observation-based modelling (advection-diffusion of a passive tracer), and a machine learning technique (ocean profile clustering) to document and explain the most-recent and ongoing cooling-to-warming transition of the Subpolar North Atlantic. Following a gradual cooling of the region that was persisting since 2006, a surface-intensified and large-scale warming sharply emerged in 2016 following an ocean... |
| Tipo: Text |
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| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00682/79432/82033.pdf |
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| Kim,Jaeyoung; Kim,Ki-Seung; Kim,Yoonha; Chung,Yong Suk. |
| ABSTRACT Drought is a major threat worldwide for crop production, especially due to the rapid climate changes. Current drought solutions involve improving irrigation system, rainwater harvesting, damming, cloud seeding, and changes of cultivation methods. Despite effective, each solution has economic, environmental, and temporal drawbacks. Among all solutions, the most effective, inexpensive and manageable method is the use of drought-tolerant cultivars via plant breeding. However, conventional plant breeding is a time-consuming and laborious task, especially for phenotypic data acquisition of target traits of numerous progenies. High-throughput phenotyping (HTP) is a recently developed method and has potential to overcome the mentioned issues. HTP offers... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sensors; Remote sensing platforms; Image analysis; Drought solution; Plant breeding. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000401801 |
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| Lemarié, Florian; Samson, Guillaume; Redelsperger, Jean-luc; Giordani, Hervé; Brivoal, Théo; Madec, Gurvan. |
| A simplified model of the atmospheric boundary layer (ABL) of intermediate complexity between a bulk parameterization and a three-dimensional atmospheric model is developed and integrated to the Nucleus for European Modelling of the Ocean (NEMO) general circulation model. An objective in the derivation of such a simplified model, called ABL1d, is to reach an apt representation in ocean-only numerical simulations of some of the key processes associated with air–sea interactions at the characteristic scales of the oceanic mesoscale. In this paper we describe the formulation of the ABL1d model and the strategy to constrain this model with large-scale atmospheric data available from reanalysis or real-time forecasts. A particular emphasis is on the appropriate... |
| Tipo: Text |
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| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00679/79085/81536.pdf |
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| Trueblood, Jonathan, V; Nicosia, Alessia; Engel, Anja; Zancker, Birthe; Rinaldi, Matteo; Freney, Evelyn; Thyssen, Melilotus; Obernosterer, Ingrid; Dinasquet, Julie; Belosi, Franco; Tovar-sanchez, Antonio; Rodriguez-romero, Araceli; Santachiara, Gianni; Guieu, Cecile; Sellegri, Karine. |
| Ice-nucleating particles (INPs) have a large impact on the climate-relevant properties of clouds over the oceans. Studies have shown that sea spray aerosols (SSAs), produced upon bursting of bubbles at the ocean surface, can be an important source of marine INPs, particularly during periods of enhanced biological productivity. Recent mesocosm experiments using natural seawater spiked with nutrients have revealed that marine INPs are derived from two separate classes of organic matter in SSAs. Despite this finding, existing parameterizations for marine INP abundance are based solely on single variables such as SSA organic carbon (OC) or SSA surface area, which may mask specific trends in the separate classes of INP. The goal of this paper is to improve the... |
| Tipo: Text |
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| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00688/79985/82974.pdf |
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| Beretta, Valentina; Desconnets, Jean-christophe; Mougenot, Isabelle; Arslan, Muhammad; Barde, Julien; Chaffard, Véronique. |
| The recent technological advancements and emergence of the open data in environmental and life sciences are opening new research opportunities while creating new challenges around data management. They make available an unprecedented amount of data that can be exploited for studying complex phenomena. However, new challenges related to data management need to be addressed to ensure effective data sharing, discovery and reuse, especially when dealing with interdisciplinary research contexts. These issues are magnified in interdisciplinary context, by the fact that each discipline has its practices, e.g., specific formats and metadata standards. Moreover, the majority of current data management practices do not consider semantic heterogeneity existing among... |
| Tipo: Text |
Palavras-chave: Interdisciplinary datasets; Semantic metadata model; Semantics; FAIR principles. |
| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00693/80504/83706.pdf |
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| Sartori,Milena; Martins,Bárbara A.; Perbiche-Neves,Gilmar. |
| RESUMO Testaram-se as hipóteses de que, assim como em reservatórios de grande áreas de superfície, volumes e vazão, em reservatórios pequenos também ocorrem a diluição gradual e contínua da riqueza, da diversidade e abundância de microcrustáceos (Cladocera e Copepoda) a jusante dos mesmos, sem a recomposição da riqueza a jusante pela falta de rios tributários, lagoas marginais e até pelo pequeno porte do riacho, sem condições para o desenvolvimento do potamoplâncton próprio do sistema. Foram estudados dois pequenos reservatórios e seus trechos a jusante, com coletas diárias a cada seis horas em oito pontos de amostragem, sendo dois lênticos e seis lóticos a jusante de cada. Foram encontradas 19 espécies (11 de Cladocera e oito de Copepoda), com destaque... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zooplâncton; Variação espacial; Recomposição; Vazão. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212021000100204 |
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| REINHARDT, D. H. R. C.. |
| O Brasil se destaca como país de origem do abacaxizeiro e como terceiro maior produtor mundial de abacaxi. A cultura está presente em todos os Estados brasileiros, mas tem maior importância socioeconômica em várias microrregiões do Nordeste e Norte do Brasil, situadas em diferentes biomas, desde a Mata Atlântica, o Agreste e o Semiárido ao Cerrado. São milhares de produtores e agentes envolvidos nas várias fases desta cadeia produtiva. É uma cultura, em grande parte, praticada na agricultura familiar e pequena produção, sendo importante fonte de renda e emprego. O abacaxizeiro aparenta ser uma planta rústica diante da sua boa tolerância a estresses abióticos, em especial a sua capacidade de adaptação a períodos relativamente prolongados de deficiência... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Abacaxi. |
| Ano: 2021 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1136154 |
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| CALIZAYA-MELO,Yeison Andru; AGUILAR,Marlene Lucía; LÓPEZ TEJEDA,Evaristo. |
| RESUMEN El presente estudio describe las abejas nativas en la Provincia Puna de la Región Andina, en la Reserva Nacional de Salinas y Aguada Blanca en Arequipa, Perú. Los muestreos se realizaron durante siete meses en tres zonas representativas del bosque de Polylepis y del ecosistema Yaretal entre los 3900-4300 m. s. n. m. utilizando dos métodos de colecta: red entomológica y platos amarillos. En total se colectaron 545 especímenes pertenecientes a 26 morfoespecies, diez géneros y cuatro familias. La familia Halictidae presentó la mayor abundancia de individuos 475 (87,1 %), seguida de Megachilidae con 43 individuos (7,7 %), Colletidae 21 individuos (3,8 %) y Apidae con seis individuos (1 %). El género más abundante y diverso fue Caenohalictus con ocho... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abejas nativas; Diversidad; Inventarios; Conservación; Neotrópico. |
| Ano: 2021 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2021000300295 |
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| Bonomelli,Claudia; Alcalde,Carolina; Aguilera,Camila; Videla,Ximena; Rojas-Silva,Ximena; Nario,Adriana; Fernandez,Victoria. |
| ABSTRACT: Calcium (Ca) is often supplied to crop species to prevent the occurrence of Ca–related disorders. Mechanisms of Ca absorption and transport are not fully understood and the effectiveness of root and/or foliar Ca fertilization may be variable. To characterize the rate of Ca absorption and transport, trials were developed with chili pepper and sweet cherry plants, using 45CaCl2 as a tracer. The Ca treatments supplied were: (1) No 45Ca (control); (2) 45Ca soil application; (3) 45Ca supply to basal leaves, and (4) 45Ca application to apical leaves. After two months, plants were harvested for biomass and Ca content determination. The recovery of 45Ca in different plant parts was measured with a liquid scintillation counter and leaf traits were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertilizers; Fertilizer application methods; Horticultural crops; Plant nutrition; Radioisotopes. |
| Ano: 2021 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000601403 |
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| Registros recuperados: 2.625 | |
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