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| Registros recuperados: 28 | |
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| Van Den Beld, Inge; Guillaumont, Brigitte; Menot, Lenaick; Bayle, Christophe; Arnaud-haond, Sophie; Bourillet, Jean-francois. |
| Marine litter is a matter of increasing concern worldwide, from shallow seas to the open ocean and from beaches to the deep-seafloor. Indeed, the deep sea may be the ultimate repository of a large proportion of litter in the ocean. We used footage acquired with a Remotely Operated Vehicle (ROV) and a towed camera to investigate the distribution and composition of litter in the submarine canyons of the Bay of Biscay. This bay contains many submarine canyons housing Vulnerable Marine Ecosystems (VMEs) such as scleractinian coral habitats. VMEs are considered to be important for fish and they increase the local biodiversity. The objectives of the study were to investigate and discuss: i) litter density, ii) the principal sources of litter, iii) the influence... |
| Tipo: Text |
Palavras-chave: Litter; Anthropogenic impact; Canyons; Deep Sea; Bay of Biscay; ROV; Towed camera. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00332/44363/43968.pdf |
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| Ioakeimidis, C.; Zeri, C.; Kaberi, H.; Galatchi, M.; Antoniadis, K.; Streftaris, N.; Galgani, Francois; Papathanassiou, E.; Papatheodorou, G.. |
| In the present work, abundance, spatial distribution and qualitative composition, of benthic marine litter, were investigated in five study areas from the Eastern Mediterranean and Black Seas (Saronikos, Patras and Echinades Gulfs; Limassol Gulf; Constanta Bay). Surveys were performed using the monitoring protocol proposed by the Technical Group for Marine Litter. Densities ranged from 24 items/km(2) to 1211 items/km(2), with the Saronikos Gulf being the most affected area. Plastics were predominant in all study areas ranging from 45.2% to 95%. Metals and Glass/Ceramics reached maximum values of 21.9% and of 22.4%. The size distribution of litter items showed that >= 50% fall into medium size categories (10 x 10 cm, 20 x 20 cm) along with an elevated... |
| Tipo: Text |
Palavras-chave: Litter; Benthic; Pollution; Eastern Mediterranean; Black Sea. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00251/36179/34730.pdf |
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| Aerts, Raf; Ewald, Michael; Nicolas, Manuel; Piat, Jerome; Skowronek, Sandra; Lenoir, Jonathan; Hattab, Tarek; Garzon-lopez, Carol X.; Feilhauer, Hannes; Schmidtlein, Sebastian; Rocchini, Duccio; Decocq, Guillaume; Somers, Ben; Van De Kerchove, Ruben; Denef, Karolien; Honnay, Olivier. |
| Alien invasive species can affect large areas, often with wide-ranging impacts on ecosystem structure, function, and services. Prunus serotina is a widespread invader of European temperate forests, where it tends to form homogeneous stands and limits recruitment of indigenous trees. We hypotesized that invasion by P. serotina would be reflected in the nutrient contents of the native species' leaves and in the respiration of invaded plots as efficient resource uptake and changes in nutrient cycling by P. serotina probably underly its aggressive invasiveness. We combined data from 48 field plots in the forest of Compiegne, France, and data from an experiment using 96 microcosms derived from those field plots. We used general linear models to separate effects... |
| Tipo: Text |
Palavras-chave: American black cherry; Biological invasion; Biogeochemical cycles; Canopy foliar nutrients; Heterotrophic respiration; Litter; Exotic species; Invasive species. |
| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00398/50981/51739.pdf |
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| Lamonica,Rita de Cássia; Abrahao-Charles,Henrique; Loguercio,Mariana Fiuza de Castro; Rocha-Barbosa,Osear. |
| The anaconda Eunectes murinus (Linnaeus, 1758) inhabits large hydrographic basins in tropical America and figures among the world's largest snakes, attaining a length of 12 m. This study analyzed the growth of three female anaconda siblings, with records from their birth in captivity up to around 14 months of age. The snakes were kept in a controlled environment with constant temperature and data related to biometry, feeding and skin shedding were recorded. At the end of these 445 days, the siblings had grown on average 2.6 times their initial length and increased their initial weight by 3830.lOg, incorporating about 43.5% of total food ingested to their body mass. They showed a total of 0.69 skin sheddings per month in that period, and did not exhibit... |
| Tipo: Journal article |
Palavras-chave: Anaconda; Biometry; Litter; Ecdysis; Ontogeny. |
| Ano: 2007 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000100014 |
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| Silva,Edmilson S.; Moraes,Gilberto J. de; Krantz,Gerard W.. |
| This study was conducted to evaluate the diversity of rhodacaroid mites in litter and soil samples from "Mata Atlântica" and "Cerrado", e ecosystems of the state of São Paulo, Brazil. A total of 969 adult rhodacaroids were collected, 913 in the Mata Atlântica and 56 in the Cerrado. Representatives of three rhodacaroid families were from: Ologamasidae, Rhodacaridae and Digamasellidae. Most numerous groups were ologamasids in the Mata Atlântica and rhodacarids in the Cerrado. Mites from both ecosystems represented 12 genera of Ologamasidae, two of Rhodacaridae and one of Digamasellidae. A total of 13 genera were found in litter samples and seven in soil samples of Mata Atlântica. The most common genera in this ecosystem were Neogamasellevans Loots &... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Edaphic mite; Ecology; Litter; Soil; Taxonomy. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000500002 |
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| Sierra-Rozo, O.; Mancera-Pineda, J.E.; Santos-Martínez, A.. |
| La degradación de la hojarasca de manglar fue estudiada en diferentes sustratos de tres humedales de manglar en San Andrés isla, Caribe colombiano, durante la temporada de lluvias. Las tasas de descomposición de Rhizophora mangle L. (mangle rojo), Laguncularia racemosa (L.) C. F. Gaertn (mangle blanco) y Avicennia germinans (L.) L. (mangle negro) fueron medidas en bolsas tipo malla. Algunas bolsas fueron dispuestas bajo el suelo, otras sumergidas en el agua y otras sobre la superficie del suelo. Dos humedales del estudio fueron de borde y uno interno. Algunos factores fisicoquímicos que influyen sobre la descomposición de la materia orgánica vegetal fueron evaluados. El modelo de regresión que mejor se ajustó al comportamiento de descomposición fue el... |
| Tipo: Journal Contribution |
Palavras-chave: Litter. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/3582 |
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| Morais, Vinícius Augusto; Silva, Carlos Alberto; Scolforo, José Roberto Soares; Mello, José Márcio; Araújo, Emanuel José Gomes de; Assis, Edson Aquiles de. |
| The total soil organic carbon (C) is regulated by climatic factors, altitude, texture and soil depth. Due to higher storage in surface, it is common to observe the exponential model to adjust the C content in the soil profile. This study was carried out in order to study the influence of climatic factors, altitude and soil depth on the vertical distribution (0-100 cm) of C in five Cerrado fragments located in the municipalities of Januária and Bonito de Minas, Minas Gerais State, Brazil. Soil samples were collected in the following layers: 0-10, 10-20, 20-40, 40-60 and 60-100 cm. The maximum and minimum levels of C varied depending on the sampling site, fragment and soil layer sampled. Larger variations in the levels of C were noted for the 0-10 cm layer,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Climatic change; Root; Litter; Total organic carbon Recursos Florestais; Engenharia Florestal; Manejo Florestal Mudanças climáticas; Raiz; Serrapilheira; Carbono orgânico total. |
| Ano: 2013 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/507 |
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| Andrade, Guilherme de Castro; Bognola, Itamar Antonio; Bellote, Antonio Francisco Jurado; Franciscon, Luziane; Waterloo, Maarten Johannes; Bruijnzeel, Leendert Adriaan. |
| No Brasil os plantios florestais ocupam 7 milhões de hectares que correspondem a 1% do território (68% com plantações de Eucalyptus e 25% com Pinus) O objetivo desse trabalho foi avaliar plantios de Eucalyptus urograndis. Estoques elevados de Ca e Mg no solo, sugerem uma lixiviação do calcário. A resistência do solo até os 60 cm de profundidade na linha de plantio foi menor do que na entrelinha, indicando que a subsolagem foi eficiente. Os valores de resistência do solo foram mais altos na entrelinha, distante 1 m da linha de plantio, até os 20 cm de profundidade, provavelmente pelo aumento da compactação na preparação da área. A biomassa da copa das árvores diferiu entre as classes de DAP, justificando o uso de equação para a sua estimativa. A variação... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Forest plantation; Biomass; Litter; Soil fertility; Soil strength Plantação florestal; Biomassa; Serapilheira Fertilidade do solo; Resistência do solo. |
| Ano: 2011 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/273 |
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| Radomski, Maria Izabel; Ribaski, Jorge. |
| A grevílea é uma espécie arbórea nativa da Austrália, introduzida no Brasil, que pode ser utilizada em sistemas de produção com lavouras e pastagens (sistemas agrossilvipastoris). O objetivo deste trabalho foi avaliar o efeito da grevílea sobre a fertilidade do solo e a produtividade da pastagem de Brachiaria brizantha, em uma área de sistema silvipastoril com gado leiteiro, localizada no município de Tapejara, Paraná, região do Arenito Caiuá. Foram estabelecidos sete pontos equidistantes entre dois renques de árvores, com quatro repetições, nos quais foram efetuadas as coletas de pastagem em duas estações do ano (verão e inverno) e coletas de serapilheira e de solo apenas no inverno. Nas condições do Arenito Caiuá, a serapilheira formada pelas árvores de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sistemas agroflorestais; Grevílea; Pastagem; Serapilheira Agroforestry systems; Oak silver; Forage; Litter. |
| Ano: 2012 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/280 |
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| Rojas,Aldo Bernal; Castaño-Meneses,Gabriela; Palacios-Vargas,José G.; García-Calderón,Norma E.. |
| The objective of this work was to compare the oribatid mite and springtail communities in three plots with different soil use - Coffee (CP), secondary vegetation or fallow fields (acahual, A) and a cloud mountain forest (CMF) - within a coffee plantation located in Santa Maria Huatulco, Oaxaca State, Mexico. In each plot 20 samples (10 of soil, 10 of litter) were taken and processed in Berlese funnels. The extracted fauna was preserved in 70% ethanol. A total of 3,031 oribatid mites belonging to 33 species, and 1,177 specimens of springtails belonging to 43 species, were collected. The number of species recorded was: 27 at CP (14 oribatids; 13 springtails), 44 at A (19 oribatids; 25 springtails) and 62 at CMF (32 for each group). A total of 26 oribatid and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea arabica; Biodiversity; Cloud mountain forest; Collembola; Litter; Microarthropods; Secondary vegetation. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800030 |
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| Villagrá,A; Olivas,I; Althaus,RL; Gómez,EA; Lainez,M; Torres,AG. |
| The aim of this study was to determine the selection of bedding material by broiler chickens during the rearing period and whether the choice was determinant to their performing a specific behavior. To achieve this objective, a choice test was designed. A choice pen was constructed where birds could move freely around the four selected materials (straw, wood shavings, rice hulls and sand). Chickens were introduced in this pen in four groups of eight birds, three days a week for one hour per day and group, for four weeks. The location and the activity performed by each broiler were recorded every five minutes. Results showed a preference for sand compared with the other three substrates. However, differences between the behaviors performed in each bedding... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Behavior; Broiler; Choice test; Litter; Preference. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2014000100010 |
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| Jacob,FG; Baracho,MS; Nääs,IA; Lima,NSD; Salgado,DD; Souza,R. |
| ABSTRACT The most common lesions observed in commercial broiler farms are hock burns and pododermatitis, defined as necrotic lesions on the plantar surface of the footpads and in the hock of growing broilers, causing pain and compromising broiler welfare. The present study aimed at identifying the risks of hock burns and pododermatitis in broilers reared under commercial conditions on new or reused litter. Twenty-four 40-d-old broilers reared in two houses in a commercial broiler farm. The plantar surface of the footpads and the hocks of broiler were recorded using infrared thermal images. The incidence of hock burns in broilers reared on new litter was 0.72 times lower than those on reused litter. Broilers reared on new litter presented lower risk (0.75,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Feet lesion; Litter; Poultry production. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2016000300357 |
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| Siqueira,Patrícia L. de O. F.; Silva,Paulo S. L. e; Silva,Kadson E. F.; Oliveira,Vianney R. de; Dantas,Iron M.; Oliveira,Fábio H. T. de. |
| The aim of this study was to evaluate the nutrient content of leaf litter and the soil beneath the crown of gliricidia (Gliricidia sepium) and sabiá (Mimosa caesalpiinifolia) under different planting densities (400, 600, 800, 1000 and 1200 plants ha-1). The experiment was carried out in a randomized block in split plot design, with three replications. The species were assigned to the plots and the densities to the subplots. Samples of litter and soil were collected three years after the trees were planted and submitted for chemical analysis. The Mg content in the litter from the gliricidia was higher than that from the sabiá. There was no difference between the species as to the other elements. The increase in planting density reduced the levels of N and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Litter; Mimosa caesalpiniifolia; Gliricidia sepium. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014000900006 |
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| Lopes,Sonia Maria; Oliveira,Edivar Heeren de; Tarli,Vitor Dias. |
| We describe three new species collected from the Reserva Ducke (02°55'-03°01'S, 59°53'-59°59'W), near Manaus, state of Amazonas: one new species was included in Blaberidae (Epilamprinae): Epilampra manauara sp. nov: , which is similar to E. sagitta Rocha e Silva & Aguiar, 1978. It differs from that species in the generally darker coloration and the internal genitalia, which has the right phallomere hooked, developed, wide medially and distended apically, bearing an apical spine-like structure and a median sclerite with a larger prepucium, rounded and with apex more sclerotized and with better-defined apical crests. Two new species were included in Ectobiidae (Blattellinae): Chromatonotus amazoninus sp. nov: , which is similar to Chromatonotus... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Blattellinae; Epilamprinae; Litter; Taxonomy. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000200008 |
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| Rigobelo,Everlon Cid; Nahas,Ely. |
| The accumulation and decomposition of litter in soils under forests depend on climatic and biotic conditions. This work evaluated the effect of monthly rainfall and temperature on total bacteria, and on the dehydrogenase and respiration microbial activities. The effects of organic matter, total organic C and soil moisture were also evaluated. Performed from April, 1999 to March, 2000 in an Eucalyptus-cultivated and Pinus-cultivated Oxisol (Typic Haplustox), the study showed that climate and the soil variables affect the total number of bacteria and the microbial activities. The highest air temperatures and rainfall intensities were found during the Summer and, consequently, all the studied variables were maximal during this period. Minimal values varied... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: MPN; Dehydrogenase; Microbial respiration; Litter; Temperature. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000100015 |
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| Registros recuperados: 28 | |
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