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| Ramírez Gómez, Juan Salvador. |
| El estudio se realizo en el Ejido las Piedras, Municipio de Huimanguillo, Tabasco, México. Tuvo como objetivo estimar rendimiento y analizar costos de producción en el cultivo de Maíz sembrado en el ciclo primavera verano de 2008. Se realizaron muestreos de suelo para analizar la fertilidad antes y después de la cosecha, muestreos de lombriz de tierra para saber el número de individuos presentes en el suelo de las parcelas en estudio y la estimación de costos de producción se uso para saber cuánto gasto cada productor en el cultivo de Maíz (Zea Mays L.). Las parcelas en estudio fueron cuatro; La primera parcela fue sembrada en suelo acahualado dándole manejo químico, la segunda siembra fue realizada en terreno barbechado y se le dio manejo... |
| Tipo: Tesis |
Palavras-chave: Orgánico; Costos de producción; Lombrices de tierra; Maestría; Organic; Production cost; Earthworms. |
| Ano: 2009 |
URL: http://hdl.handle.net/10521/1523 |
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| ENCONTRO LATINO AMERICANO DE ECOLOGIA E TAXONOMIA DE OLIGOQUETAS, 5., 2015, Curitiba.. |
| O solo abriga e sustenta uma ampla gama de organismos, incluindo engenheiros do ecossistema que mundialmente representam milhares de espécies importantes para o funcionamento edáfico. Os engenheiros edáficos incluem as minhocas, as formigas e os cupins, além de algumas espécies de milipéias e besouros que modificam a estrutura do solo e a distribuição de recursos (especialmente matéria orgânica) no solo para outros organismos, incluindo as raízes das plantas. Esses animais afetam diversos serviços ambientais considerados de grande importância para produção agrícola e florestal sustentável, como a produção vegetal, a emissão de gases de efeito estufa, o controle da erosão e de pragas e doenças das plantas e dos animais, a retenção e infiltração da água no... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Evento; Minhoca; Fauna edáfica; Taxonomia animal; Oligochaeta; Animal taxonomy; Earthworms. |
| Ano: 2017 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1085023 |
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| Förster,Bernhard; Garcia,Marcos; Höfer,Hubert; Morgan,Edward; Römbke,Jörg. |
| The aim of this work was to evaluate whether terrestrial model ecosystems (TMEs) are a useful tool for the study of the effects of litter quality, soil invertebrates and mineral fertilizer on litter decomposition and plant growth under controlled conditions in the tropics. Forty-eight intact soil cores (17.5-cm diameter, 30-cm length) were taken out from an abandoned rubber plantation on Ferralsol soil (Latossolo Amarelo) in Central Amazonia, Brazil, and kept at 28ºC in the laboratory during four months. Leaf litter of either Hevea pauciflora (rubber tree), Flemingia macrophylla (a shrubby legume) or Brachiaria decumbens (a pasture grass) was put on top of each TME. Five specimens of either Pontoscolex corethrurus or Eisenia fetida (earthworms),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brachiaria decumbens; Flemingia macrophylla; Hevea pauciflora; Diplopods; Earthworms; Isopods. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800040 |
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| Huerta,Esperanza; Kampichler,Christian; Geissen,Violette; Ochoa-Gaona,Susana; Jong,Ben de; Hernández-Daumás,Salvador. |
| The objective of this work was to construct a simple index based on the presence/absence of different groups of soil macrofauna to determine the ecological quality of soils. The index was tested with data from 20 sites in South and Central Tabasco, Mexico, and a positive relation between the model and the field observations was detected. The index showed that diverse agroforestry systems had the highest soil quality index (1.00), and monocrops without trees, such as pineapple, showed the lowest soil quality index (0.08). Further research is required to improve this model for natural systems that have very low earthworm biomass (<10 g m-2) and a high number of earthworm species (5-7), as it is in the tropical rain forest, whose soil quality index was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Earthworms; Models; Soil fauna; Soil quality indices. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2009000800039 |
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| GUERRA,Rafael Torquemada. |
| From May to December, 1992 we studied the earthworm activity, as part of the ECOFIT Program at Surrão ( 30km from Boa Vista), verifying the duration of the activity and quantifying it through the casts deposited on the soil surface. Three transects were stablished: a 100m long in the savanna, a 40m in the transitional area and 100m long in the forest. Specimens were collected monthly along the transects according to the method proposed by TSBF and the casts were collected from the squares previously placed on the transects. Two earthworm species were found in the three areas: Pontoscolex roraìmensis and Pontoscolex corethrurus. The first species depositing its casts on the soil surface. Rainy season wich usually occurs from April to August, determined the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Earthworms; Earthworm activity; Amazonia. |
| Ano: 1994 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59671994000400303 |
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| Tripathi,G; Kachhwaha,N.; Dabi,I.; Bandooni,N.. |
| The effects of varying temperatures (12 - 44° C) on the specific activity of cytoplasmic malate dehydrogenase ((cMDH), mitochondrial malate dehydrogenase (mMDH) and lactate dehydrogenase (LDH) of some earthworms (Metaphire posthuma, Perionyx sansibaricus and Lampito mauritii) were studied. The effects of different temperatures on supernatant and mitochondrial protein contents were also investigated. The specific activities of cMDH, mMDH and LDH of the earthworms decreased gradually as a function of increasing temperature from 12 to 44°C. Higher metabolic energy was needed to maintain the activity at low temperatures. Hence, the earthworms showed increased enzyme specific activity at low temperatures. However, the protein content increased upto 28°C.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Enzymes; Proteins; Earthworms; Temperatures. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132011000400017 |
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| Loza-Murguía,Manuel G; Acho,René; Arce,Alcides; Huaycho,Roxana; Aruhiza,Nicanor; Mamani,Sofía. |
| The macrofauna is an important component of ecosystems because its participation in the biodegradation of soil nutrients has beneficial effects on the food chain. During six months, from February through July, a number of worms and their biomass (g m-2) were assessed in the soil of the Estación Experimental of Kallutaca, located on the plateau of La Paz. A study area of one hectare of fallow land was delimited. The study area had been without tillage activity for approximately ten years. This area was divided into five rings. Each ring had eight sampling points. Each sampling point included a square meter of soil and had a depth of 30-35 cm. The density and biomass of earthworms recorded in this study were 13.6 ± 29.74 m-2 and 4.7315 ± 2.3544 g m-2,... |
| Tipo: Journal article |
Palavras-chave: Earthworms; Seasonal density; Soil; Study area. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000300011 |
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