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| Registros recuperados: 49 | |
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| Macedo, Taísa Gonçalves; dos Santos, Carlos Antônio; Brandão, Antônio de Amorim; Silva Pereira Costa, Evandro; Goréte Ferreira do Carmo, Margarida. |
| This study aimed to evaluate different spacings between rows on the development and yield of single-head broccoli under the soil and climate conditions of Seropédica, in the Baixada Fluminense region, the State of Rio de Janeiro (Brazil). Tests were carried out under field conditions using the Avenger hybrid. The experimental design adopted was randomized blocks with four treatments and four replications per treatment. Four spacings between rows were tested: 0.6 m, 0.7 m, 0.8 m, and 1.0 m. The spacing between plants in the rows was 0.6 m in all treatments. The number of leaves (NL), plant height (PHT), fresh leaf mass (FLM), stem fresh mass (SFM), inflorescence fresh mass (IFM), inflorescence longitudinal diameter (ILD), and estimated yield (YLD) were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica oleracea var. italica; Brassicaceae; Population density; Brassica oleracea var. italica; Brassicaceae; Densidade populacional. |
| Ano: 2022 |
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/6908 |
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| Macedo, Taísa Gonçalves; dos Santos, Carlos Antônio; Brandão, Antônio de Amorim; Silva Pereira Costa, Evandro; Goréte Ferreira do Carmo, Margarida. |
| This study aimed to evaluate different spacings between rows on the development and yield of single-head broccoli under the soil and climate conditions of Seropédica, in the Baixada Fluminense region, the State of Rio de Janeiro (Brazil). Tests were carried out under field conditions using the Avenger hybrid. The experimental design adopted was randomized blocks with four treatments and four replications per treatment. Four spacings between rows were tested: 0.6 m, 0.7 m, 0.8 m, and 1.0 m. The spacing between plants in the rows was 0.6 m in all treatments. The number of leaves (NL), plant height (PHT), fresh leaf mass (FLM), stem fresh mass (SFM), inflorescence fresh mass (IFM), inflorescence longitudinal diameter (ILD), and estimated yield (YLD) were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica oleracea var. italica; Brassicaceae; Population density; Brassica oleracea var. italica; Brassicaceae; Densidade populacional. |
| Ano: 2022 |
URL: http://periodicosonline.uems.br/index.php/agrineo/article/view/6908 |
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| Tischendorf, Lutz; ELUTIS Modelling and Consulting Inc.; lutz.tischendorf@gmx.net; Grez, Audrey; Universidad de Chile; agrez@uchile.cl; Fahrig, Lenore; Carleton University; lfahrig@ccs.carleton.ca. |
| We conducted a factorial simulation experiment to analyze the relative importance of movement pattern, boundary-crossing probability, and mortality in habitat and matrix on population density, and its dependency on habitat fragmentation, as well as inter-patch distance. We also examined how the initial response of a species to a fragmentation event may affect our observations of population density in post-fragmentation experiments. We found that the boundary-crossing probability from habitat to matrix, which partly determines the emigration rate, is the most important determinant for population density within habitat patches. The probability of crossing a boundary from matrix to habitat had a weaker, but positive, effect on population density. Movement... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Boundary crossing; Emigration; Habitat fragmentation; Immigration; Modeling; Movement; Population density; Simulation; Time scale. |
| Ano: 2005 |
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| Fahrig, Lenore; Carleton University, Geomatics and Landscape Ecology Laboratory, Department of Biology; lfahrig@ccs.carleton.ca; Rytwinski, Trina; Carleton University, Geomatics and Landscape Ecology Laboratory, Department of Biology; trytwins@connect.carleton.ca. |
| We attempted a complete review of the empirical literature on effects of roads and traffic on animal abundance and distribution. We found 79 studies, with results for 131 species and 30 species groups. Overall, the number of documented negative effects of roads on animal abundance outnumbered the number of positive effects by a factor of 5; 114 responses were negative, 22 were positive, and 56 showed no effect. Amphibians and reptiles tended to show negative effects. Birds showed mainly negative or no effects, with a few positive effects for some small birds and for vultures. Small mammals generally showed either positive effects or no effect, mid-sized mammals showed either negative effects or no effect, and large mammals showed predominantly negative... |
| Tipo: Peer-Reviewed Synthesis |
Palavras-chave: Environmental impact; Landscape connectivity; Mortality; Population density; Road network; Road density; Road effect zone; Road mitigation; Species distribution; Species richness; Traffic density; Traffic volume. |
| Ano: 2009 |
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| Hamon, Pierre-yves; Tournier, Henri. |
| Since 1980, the IFREMER research laboratory "Resources Aquacoles", Sete (France), follows during the summer period, the evolution of the commercial stocks of molluscs (mussels and oysters) reared in Thau Lagoon. The data for this estimation are collected, on one hand, by surface observations and, on the other hand, by diving observations. During the years 1980 to 1984, the authors noticed an increase of oyster biomass, during the same period the mussel biomass decreased. The different simulations used to know the total filtration and the biodeposit, have shown that the impact of the increase of the total biomass is not so important as it could be feared. |
| Tipo: Text |
Palavras-chave: Bivalvia; Marine mollusks; Stock assessment; Population density; Biomass. |
| Ano: 1984 |
URL: http://archimer.ifremer.fr/doc/1984/publication-1787.pdf |
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| Rondelaud, D. |
| The treated habitats have not been recolonized by Lymnaea truncatula . Four aquatic snail species showed an increase in their numbers: L. glabra in the stations of Haute-Vienne, L. glabra, Physa acuta, P. hypnorum and Planorbis rotundatus in the habitats of Indre. The numbers of L. glabra and P. acuta reached their maximum on the third year and decreased thereafter; those of P. hypnorum and P. rotundatus slightly increased from the fourth or the fifth years treatment. The colonization of L. truncatula habitats was incomplete and did not reach over 50% of the surface for L. glabra and P. acuta , 20% for P. hypnorum and P. rotundatus . The bivalve Pisidium casertanum did not recolonize treated habitats. There were no modifications in the numbers of... |
| Tipo: Text |
Palavras-chave: Physa; Lymnaea; Mollusca; Biological control; Chemical control; Population density; Population dynamics; Freshwater molluscs. |
| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/1991/acte-1715.pdf |
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| Cornejo, S.; Daza, E.; Guzmán, L.. |
| El presente informe da cuenta de los resultados de las actividades realizadas para evaluar el estado de los bancos de ostión del sur (Chlamys vitrea), en sectores selectos de la región de Magallanes y Antártica Chilena (XII Región). Se incorporan también propuestas de administración y medidas para la recuperación de las poblaciones del recurso. Se presenta la ubicación geográfica de los bancos identificados en cada fiordo y la superficie ocupada por ellos, además de las estructuras de tamaño, tallas medias, fracción de ejemplares sobre la talla mínima legal, relación longitud peso, pesos medios, estimaciones de densidad y abundancia, además de las estimaciones de las capturas totales permisibles (CTPs). |
| Tipo: Report |
Palavras-chave: Marine molluscs; Resource management; Population characteristics; Population density; Abundance; Population structure; Population structure; Resource management; Population density; Http://aims.fao.org/aos/agrovoc/c_6115; Http://aims.fao.org/aos/agrovoc/c_6524; Http://aims.fao.org/aos/agrovoc/c_6112. |
| Ano: 2005 |
URL: http://hdl.handle.net/1834/1755 |
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| Zouari, M.; Hitonori, N.; Lymayem, Y.; M'Rabet, R.; Dhraief, M.N.; Missaoui, H.; Guergej, H.; Kraiem, M.M.. |
| Le potentiel de grossissement de la palourde Ruditapes decussatus (L. 1758), élevée dans des poches de filet de 1 m2 de surface, a été évalué sur l’estran de Zarat (golfe de Gabès) pour la période de juillet 2006 à novembre 2007. Dans une première expérience, trois niveaux de la marée, représentant des chenaux de drainage de l’eau, existants entre la ligne de marée haute et celle de marée basse, ont été comparés sur une durée de 16 mois. Chacun des niveaux a été représenté par un triplicata de sacs de 150 individus. Dans une seconde expérience, trois densités de mise en charge différentes ont été comparées sur une durée de 17 mois. Pour cela, deux sacs de 100 individus chacun et deux autres de 200 individus chacun ont été alignés à l’expérience précédente,... |
| Tipo: Journal Contribution |
Palavras-chave: Clam culture; Comparative studies; Environmental conditions; Estuaries; Experimental culture; Growth; Growth rate; Marine aquaculture; Marine molluscs; Population density; Rearing; Stocking density; Clams. |
| Ano: 2009 |
URL: http://hdl.handle.net/1834/4495 |
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| Essid, N.; Aissa, P.. |
| Une étude réalisée au niveau du secteur nord et est de la lagune de Bizerte a montré que les densités et les biomasses totales et individuelles des nématodes libres marins sont étroitement dépendantes des paramètres physico-chimiques, sédimentologiques et géochimiques. En effet, les sédiments de ce secteur ont présenté en surface un faciès très fin enrichi en carbone organique, issu principalement des rejets domestiques et industriels des villes avoisinantes. Ceci favorise la formation de complexes organo-minéraux entre les particules minérales, essentiellement entre la smectite et les composés organiques. Les nématodes libres marins réagissent à ces conditions de surface non favorables par leur migration en profondeur, les individus détritivores étant... |
| Tipo: Journal Contribution |
Palavras-chave: Population density; Biomass; Free living nematodes; Http://aims.fao.org/aos/agrovoc/c_36731. |
| Ano: 2002 |
URL: http://hdl.handle.net/1834/243 |
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| Registros recuperados: 49 | |
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