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Registro Completo |
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
07/01/2020 |
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Data da última atualização: |
07/01/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
RAMALHO, I. O.; REZENDE, C. de P.; PEREIRA, J. M.; SANTOS, C. A. dos; MONTEIRO, R. C.; ALVES, B. J. R.; CARVALÇHO, I. das N. O. de; URQUIAGA, S.; BODDEY, R. M. |
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Afiliação: |
Israel Oliveira Ramalho, UFRRJ; Claudia de Paula Rezende, CEPLAC, Itabela, BA; José Marques Pereira, CEPLAC, Itabela, BA; Camila Almeida dos Santos, UFRRJ; Rafael Cassador Monteiro, UFRRJ; BRUNO JOSE RODRIGUES ALVES, CNPAB; Isabel das Neves Oiticica de Carvalho, BOLSISTA DA EMBRAPA AGROBIOLOGIA; SEGUNDO SACRAMENTO U CABALLERO, CNPAB; ROBERT MICHAEL BODDEY, CNPAB. |
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Título: |
Deposition and decomposition of litter in periods of grazing and rest of a tropical pasture under rotational grazing. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Ciência Rural, v. 49, n. 12, Epub Dec. 02, 2019 |
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DOI: |
http://dx.doi.org/10.1590/0103-8478cr20190266 |
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Idioma: |
Inglês |
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Notas: |
Título em Português: Deposição e decomposição de serapilheira em períodos de pastejo e descanso de uma pastagem tropical sob pastejo rotativo. |
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Conteúdo: |
The objectives of this study were to determine the rates of plant litter deposition and decomposition in Marandu pastures (Urochloa brizantha cv. Marandu) under a) three forms of nitrogen (N) supply, b) at different stages of rotational grazing and c) to compare the single-exponential decay constant (?k?) derived from litterbags with values derived from estimates of deposited and existing litter (DEL technique). The three N supply treatments were: without or with N fertilization (zero or 150 kg N ha-1 yr-1) or with the legume Desmodium ovalifolium. There were no significant differences (p<0.05) between existing litter and rates of litter deposition and decomposition between the three N supply treatments. The litter decomposition rate was estimated using the DEL technique for the 7-day grazing periods and two subsequent 14-day periods in each 35-day grazing cycle. The litter decomposition rate was (P<0.05) higher for the second rest period (days 21 to 35) at 0.089 g g-1 day-1, than for the grazing period (0.038 g g-1 day-1) and for the first rest period (0.040 g g-1 day-1). The mean half-life of the litter was 12 days using the DEL technique while the estimate from the litterbags was 136 days. Results showed that estimates provided by litterbags severely underestimate the decomposition in relation to the DEL technique and predict a long-term accumulation of litter which is not observed. |
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Palavras-Chave: |
Capim marandu; Comparação de metodologias; Decomposition constant; Methodological comparison. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/208239/1/eposition-and-decomposition-of-litter.pdf
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Marc: |
LEADER 02480naa a2200289 a 4500
001 2118259
005 2020-01-07
008 2019 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.1590/0103-8478cr20190266$2DOI
100 1 $aRAMALHO, I. O.
245 $aDeposition and decomposition of litter in periods of grazing and rest of a tropical pasture under rotational grazing.$h[electronic resource]
260 $c2019
500 $aTítulo em Português: Deposição e decomposição de serapilheira em períodos de pastejo e descanso de uma pastagem tropical sob pastejo rotativo.
520 $aThe objectives of this study were to determine the rates of plant litter deposition and decomposition in Marandu pastures (Urochloa brizantha cv. Marandu) under a) three forms of nitrogen (N) supply, b) at different stages of rotational grazing and c) to compare the single-exponential decay constant (?k?) derived from litterbags with values derived from estimates of deposited and existing litter (DEL technique). The three N supply treatments were: without or with N fertilization (zero or 150 kg N ha-1 yr-1) or with the legume Desmodium ovalifolium. There were no significant differences (p<0.05) between existing litter and rates of litter deposition and decomposition between the three N supply treatments. The litter decomposition rate was estimated using the DEL technique for the 7-day grazing periods and two subsequent 14-day periods in each 35-day grazing cycle. The litter decomposition rate was (P<0.05) higher for the second rest period (days 21 to 35) at 0.089 g g-1 day-1, than for the grazing period (0.038 g g-1 day-1) and for the first rest period (0.040 g g-1 day-1). The mean half-life of the litter was 12 days using the DEL technique while the estimate from the litterbags was 136 days. Results showed that estimates provided by litterbags severely underestimate the decomposition in relation to the DEL technique and predict a long-term accumulation of litter which is not observed.
653 $aCapim marandu
653 $aComparação de metodologias
653 $aDecomposition constant
653 $aMethodological comparison
700 1 $aREZENDE, C. de P.
700 1 $aPEREIRA, J. M.
700 1 $aSANTOS, C. A. dos
700 1 $aMONTEIRO, R. C.
700 1 $aALVES, B. J. R.
700 1 $aCARVALÇHO, I. das N. O. de
700 1 $aURQUIAGA, S.
700 1 $aBODDEY, R. M.
773 $tCiência Rural$gv. 49, n. 12, Epub Dec. 02, 2019
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Registro original: |
Embrapa Agrobiologia (CNPAB) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Pantanal; Embrapa Suínos e Aves. |
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Data corrente: |
01/10/2019 |
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Data da última atualização: |
18/11/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
MARTINS, F. I.; MOURAO, G. de M.; CAMPOS, Z. M. da S.; PELLEGRIN, A. O.; SILVA, V. S. |
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Afiliação: |
FERNANDO I. MARTINS; GUILHERME DE MIRANDA MOURAO, CPAP; ZILCA MARIA DA SILVA CAMPOS, CPAP; AIESCA OLIVEIRA PELLEGRIN, CPAP; VIRGINIA SANTIAGO SILVA, CNPSA. |
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Título: |
Activity pattern and habitat selection by invasive wild boars (Sus scrofa) in brazilian agroecosystems. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Mastozoología Neotropical, v. 26, n. 1, p. 129-141, 2019. |
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DOI: |
10.31687/saremMN.19.26.1.0.08 |
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Idioma: |
Inglês |
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Conteúdo: |
Wild boar populations are rapidly spreading through midwest Brazil, causing crop damage, impacting biodiversity and, possibly, spreading diseases to livestock. Despite their threat, little is known about introduced populations in Brazilian agricultural landscapes. The critical lack of knowledge about basic aspects of wild boar spatial ecology led us to evaluate home range sizes, activity pattern and habitat selection in interface regions of agricultural crops and natural riparian forests. We captured and monitored seven individuals using global position system collars throughout 19 to 77 days. The home range sizes calculated by Minimum Convex Polygon and Biased Random Bridge Kernel ranged from 273 to 1253 ha (median = 497 ha) and from 129 to 779 ha (median = 235 ha), respectively. Animals were more active at night, with an activity peak during the first half of the night (between 19:00-03:00 h) and less activity during the hottest hours of day (12:00 h). Wild boars positively selected riverine forests both during the day and night. They also avoided open areas (like crops and pastures), mainly during daylight. Our study provides information to improve control plans, directing capture efforts towards periods of high activity in the preferred habitats used by wild boars in the studied region. |
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Thesagro: |
Comportamento Animal; Habitat; Javali; Porco Selvagem. |
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Thesaurus NAL: |
Animal behavior; Wild boars; Wildlife habitats. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/202444/1/Activity-pattern-habitat-selection-2019.pdf
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Marc: |
LEADER 02110naa a2200265 a 4500
001 2112634
005 2019-11-18
008 2019 bl uuuu u00u1 u #d
024 7 $a10.31687/saremMN.19.26.1.0.08$2DOI
100 1 $aMARTINS, F. I.
245 $aActivity pattern and habitat selection by invasive wild boars (Sus scrofa) in brazilian agroecosystems.$h[electronic resource]
260 $c2019
520 $aWild boar populations are rapidly spreading through midwest Brazil, causing crop damage, impacting biodiversity and, possibly, spreading diseases to livestock. Despite their threat, little is known about introduced populations in Brazilian agricultural landscapes. The critical lack of knowledge about basic aspects of wild boar spatial ecology led us to evaluate home range sizes, activity pattern and habitat selection in interface regions of agricultural crops and natural riparian forests. We captured and monitored seven individuals using global position system collars throughout 19 to 77 days. The home range sizes calculated by Minimum Convex Polygon and Biased Random Bridge Kernel ranged from 273 to 1253 ha (median = 497 ha) and from 129 to 779 ha (median = 235 ha), respectively. Animals were more active at night, with an activity peak during the first half of the night (between 19:00-03:00 h) and less activity during the hottest hours of day (12:00 h). Wild boars positively selected riverine forests both during the day and night. They also avoided open areas (like crops and pastures), mainly during daylight. Our study provides information to improve control plans, directing capture efforts towards periods of high activity in the preferred habitats used by wild boars in the studied region.
650 $aAnimal behavior
650 $aWild boars
650 $aWildlife habitats
650 $aComportamento Animal
650 $aHabitat
650 $aJavali
650 $aPorco Selvagem
700 1 $aMOURAO, G. de M.
700 1 $aCAMPOS, Z. M. da S.
700 1 $aPELLEGRIN, A. O.
700 1 $aSILVA, V. S.
773 $tMastozoología Neotropical$gv. 26, n. 1, p. 129-141, 2019.
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Registro original: |
Embrapa Pantanal (CPAP) |
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