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 | Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Solos. |
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Data corrente: |
08/10/2021 |
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Data da última atualização: |
08/10/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SILVA, L. F. S. G.; CASTILHO, C. V. de; CAVALCANTE, C. O.; PIMENTEL, T. P.; FEARNSIDE, P. M.; BARBOSA, R. I. |
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Afiliação: |
LUIS FELIPE SANTOS GONÇALVES SILVA, UFRR; CAROLINA VOLKMER DE CASTILHO, CNPS; CLAYMIRDE OLIVEIRA CAVALCANTE, UFRR; TANIA PENA PIMENTEL, INPA; PHILIP M. FEARNSIDE, INPA; REINALDO IMBROZIO BARBOSA, INPA. |
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Título: |
Production and stock of coarse woody debris across a hydro-edaphic gradient of oligotrophic forests in the northern Brazilian Amazon. |
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Ano de publicação: |
2016 |
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Fonte/Imprenta: |
Forest Ecology and Management, v. 364, p. 1-9, Mar. 2016. |
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DOI: |
https://doi.org/10.1016/j.foreco.2015.12.045 |
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Idioma: |
Inglês |
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Conteúdo: |
Most studies on coarse woody debris (CWD) in Brazilian Amazonia have been done in disturbed and undisturbed upland forests. However, oligotrophic forest types occupying seasonal flooding environments have been neglected, although they occupy about one-third of the Amazon region. We examined the effect of an environmental gradient with different hydro-edaphic features on production and stock of CWD in an area of the Rio Negro-Rio Branco basin, in Brazil's state of Roraima. We used 60 km of trails (production) and 30 permanent plots (stock) in a sampling grid established at Viruá National Park. Our study demonstrated that production and stock of CWD carbon are the lowest in all of Amazonia. The highest CWD carbon production was found in open-canopy submontane rainforest (0.58 ± 0.63 MgC ha-1 yr-1), which occur in environments that are free of any influence of seasonal flooding. The lowest stocks of CWD carbon (0.35 ± 0.30 MgC ha-1) was associated with low tree biomass in forest types occurring on sandy soils that are strongly influenced by seasonal flooding. CWD stocks in oligotrophic forests at Viruá are partially explained (~21%) by tree biomass, which is determined by different environmental conditions across hydro-edaphic gradients. Reference values (CWD carbon as a percentage of tree carbon) were among the lowest in Amazonia (0.91-4.38%), with lower values being associated with formations with low production and stock of CWD. This finding suggests that values vary among oligotrophic forest types and that separate reference values should be adopted for estimates of undisturbed forest carbon stocks in the different ecosystems in Brazilian Amazonia. Different reference values represent the variability of CWD among forest types and contribute to reducing uncertainties in current estimates of carbon stock in Amazonia. MenosMost studies on coarse woody debris (CWD) in Brazilian Amazonia have been done in disturbed and undisturbed upland forests. However, oligotrophic forest types occupying seasonal flooding environments have been neglected, although they occupy about one-third of the Amazon region. We examined the effect of an environmental gradient with different hydro-edaphic features on production and stock of CWD in an area of the Rio Negro-Rio Branco basin, in Brazil's state of Roraima. We used 60 km of trails (production) and 30 permanent plots (stock) in a sampling grid established at Viruá National Park. Our study demonstrated that production and stock of CWD carbon are the lowest in all of Amazonia. The highest CWD carbon production was found in open-canopy submontane rainforest (0.58 ± 0.63 MgC ha-1 yr-1), which occur in environments that are free of any influence of seasonal flooding. The lowest stocks of CWD carbon (0.35 ± 0.30 MgC ha-1) was associated with low tree biomass in forest types occurring on sandy soils that are strongly influenced by seasonal flooding. CWD stocks in oligotrophic forests at Viruá are partially explained (~21%) by tree biomass, which is determined by different environmental conditions across hydro-edaphic gradients. Reference values (CWD carbon as a percentage of tree carbon) were among the lowest in Amazonia (0.91-4.38%), with lower values being associated with formations with low production and stock of CWD. This finding suggests that values vary among o... Mostrar Tudo |
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Palavras-Chave: |
Dead biomass; Hydro-edaphic determinants; Oligotrophic forests. |
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Thesaurus Nal: |
Necromass. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 02659naa a2200241 a 4500
001 2135223
005 2021-10-08
008 2016 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.foreco.2015.12.045$2DOI
100 1 $aSILVA, L. F. S. G.
245 $aProduction and stock of coarse woody debris across a hydro-edaphic gradient of oligotrophic forests in the northern Brazilian Amazon.$h[electronic resource]
260 $c2016
520 $aMost studies on coarse woody debris (CWD) in Brazilian Amazonia have been done in disturbed and undisturbed upland forests. However, oligotrophic forest types occupying seasonal flooding environments have been neglected, although they occupy about one-third of the Amazon region. We examined the effect of an environmental gradient with different hydro-edaphic features on production and stock of CWD in an area of the Rio Negro-Rio Branco basin, in Brazil's state of Roraima. We used 60 km of trails (production) and 30 permanent plots (stock) in a sampling grid established at Viruá National Park. Our study demonstrated that production and stock of CWD carbon are the lowest in all of Amazonia. The highest CWD carbon production was found in open-canopy submontane rainforest (0.58 ± 0.63 MgC ha-1 yr-1), which occur in environments that are free of any influence of seasonal flooding. The lowest stocks of CWD carbon (0.35 ± 0.30 MgC ha-1) was associated with low tree biomass in forest types occurring on sandy soils that are strongly influenced by seasonal flooding. CWD stocks in oligotrophic forests at Viruá are partially explained (~21%) by tree biomass, which is determined by different environmental conditions across hydro-edaphic gradients. Reference values (CWD carbon as a percentage of tree carbon) were among the lowest in Amazonia (0.91-4.38%), with lower values being associated with formations with low production and stock of CWD. This finding suggests that values vary among oligotrophic forest types and that separate reference values should be adopted for estimates of undisturbed forest carbon stocks in the different ecosystems in Brazilian Amazonia. Different reference values represent the variability of CWD among forest types and contribute to reducing uncertainties in current estimates of carbon stock in Amazonia.
650 $aNecromass
653 $aDead biomass
653 $aHydro-edaphic determinants
653 $aOligotrophic forests
700 1 $aCASTILHO, C. V. de
700 1 $aCAVALCANTE, C. O.
700 1 $aPIMENTEL, T. P.
700 1 $aFEARNSIDE, P. M.
700 1 $aBARBOSA, R. I.
773 $tForest Ecology and Management$gv. 364, p. 1-9, Mar. 2016.
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Registro original: |
Embrapa Solos (CNPS) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
28/11/2023 |
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Data da última atualização: |
18/01/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 3 |
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Autoria: |
PIOVESAN, B.; GONÇALVES, R. da S.; NÖRNBERG, S. D.; LLANO, J. H. G.; CONTRERAS-MIRANDA, J.; BERNARDI, D.; NAVA, D. E. |
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Afiliação: |
BRUNA PIOVESAN, UNIVERSIDADE FEDERAL DE PELOTAS; RAFAEL DA SILVA GONÇALVES, PARTAMON; SANDRO DANIEL NÖRNBERG, PARTAMON; JESUS HERNANDO GOMEZ LLANO, UNIVERSIDADE FEDERAL DE PELOTAS; JAVIER CONTRERAS-MIRANDA, UNIVERSIDADE FEDERAL DE PELOTAS; DANIEL BERNARDI, UNIVERSIDADE FEDERAL DE PELOTAS; DORI EDSON NAVA, CPACT. |
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Título: |
Spatial and temporal dispersion of Doryctobracon areolatus (Szépligeti) (Hymenoptera: Braconidae) in orchards infested with Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae). |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Environmental Entomology, v. 52, n. 4, p. 565-573, Aug. 2023. |
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DOI: |
https://doi.org/10.1093/ee/nvad059 |
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Idioma: |
Inglês |
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Notas: |
Accepted on 1 June 2023. |
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Conteúdo: |
Doryctobracon areolatus (Szépligeti) is an endoparasitoid and promising fruit fly control agent. The objective of the study was to determine the spatial (horizontal and vertical) and temporal dispersion of D. areolatus in the field. To evaluate the horizontal and temporal dispersion, two peach orchards were selected. In each orchard, 50 points were marked at different distances from the central point, from where 4,100 couples of D. areolatus were released. Four hours after release, parasitism units (PU) (3 per point) were fixed to the trees at a height of 1.5 m from the ground. The PUs were composed of ripe apples artificially infested with second instar larvae of Anastrepha fraterculus (30 larvae/fruit). For the evaluation of vertical dispersion, in an olive orchard six points were selected (trees of ≈4 m in height). Each tree was divided into three heights in relation to the ground (1.17, 2.34, and 3.51 m). Doryctobracon areolatus was able to disperse horizontally at a distance >60 m from the release point. However, the highest parasitism rates [15–45% (area 1); 15–27% (area 2)] were observed up to 25 m. Higher percentages of parasitism and of recovered offspring occur in the first days after the release of the parasitoid (2 DAR). As for vertical dispersion, D. areolatus parasitized A. fraterculus larvae up to the highest attachment height of the evaluated PUs (3.51). The results showed the potential use of D. areolatus in the management of fruit flies in the field. |
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Thesagro: |
Mosca das Frutas; Pêssego. |
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Thesaurus NAL: |
Doryctobracon areolatus. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1158782/1/Artigo-5-Environmental-Entomology.pdf
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Marc: |
LEADER 02383naa a2200253 a 4500
001 2158782
005 2024-01-18
008 2023 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1093/ee/nvad059$2DOI
100 1 $aPIOVESAN, B.
245 $aSpatial and temporal dispersion of Doryctobracon areolatus (Szépligeti) (Hymenoptera$bBraconidae) in orchards infested with Anastrepha fraterculus (Wiedemann) (Diptera: Tephritidae).$h[electronic resource]
260 $c2023
500 $aAccepted on 1 June 2023.
520 $aDoryctobracon areolatus (Szépligeti) is an endoparasitoid and promising fruit fly control agent. The objective of the study was to determine the spatial (horizontal and vertical) and temporal dispersion of D. areolatus in the field. To evaluate the horizontal and temporal dispersion, two peach orchards were selected. In each orchard, 50 points were marked at different distances from the central point, from where 4,100 couples of D. areolatus were released. Four hours after release, parasitism units (PU) (3 per point) were fixed to the trees at a height of 1.5 m from the ground. The PUs were composed of ripe apples artificially infested with second instar larvae of Anastrepha fraterculus (30 larvae/fruit). For the evaluation of vertical dispersion, in an olive orchard six points were selected (trees of ≈4 m in height). Each tree was divided into three heights in relation to the ground (1.17, 2.34, and 3.51 m). Doryctobracon areolatus was able to disperse horizontally at a distance >60 m from the release point. However, the highest parasitism rates [15–45% (area 1); 15–27% (area 2)] were observed up to 25 m. Higher percentages of parasitism and of recovered offspring occur in the first days after the release of the parasitoid (2 DAR). As for vertical dispersion, D. areolatus parasitized A. fraterculus larvae up to the highest attachment height of the evaluated PUs (3.51). The results showed the potential use of D. areolatus in the management of fruit flies in the field.
650 $aDoryctobracon areolatus
650 $aMosca das Frutas
650 $aPêssego
700 1 $aGONÇALVES, R. da S.
700 1 $aNÖRNBERG, S. D.
700 1 $aLLANO, J. H. G.
700 1 $aCONTRERAS-MIRANDA, J.
700 1 $aBERNARDI, D.
700 1 $aNAVA, D. E.
773 $tEnvironmental Entomology$gv. 52, n. 4, p. 565-573, Aug. 2023.
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