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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
11/09/2020 |
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Data da última atualização: |
11/09/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CURTO, R. De A.; MATTOS, P. P. de; BRAZ, E. M.; CANETTI, A.; PÉLLICO NETTO, S. |
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Afiliação: |
Rafaella De Angeli Curto, UFRJ; PATRICIA POVOA DE MATTOS, CNPF; EVALDO MUNOZ BRAZ, CNPF; Aline Canetti, Consultora florestal; Sylvio Péllico Netto, UFPR. |
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Título: |
Effectiveness of competition indices for understanding growth in an overstocked stand. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Forest Ecology and Management , v. 477, 118472, 2020. 11 p. |
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DOI: |
https://doi.org/10.1016/j.foreco.2020.118472 |
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Idioma: |
Inglês |
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Conteúdo: |
The objective of this study was to select and discuss indices to explain competition among trees in an unmanaged stand in order to support decision-making in forest management. The work was carried out in a plantation of Araucaria angustifolia (Bertol.) Kuntze located in a national forest in southern Brazil. The plantation was established in 1946 in 2 × 2 m spacing, with only one thinning that happened sometime between 1970 and 1980. Forty-six sample plots were established using an adaptation of the Prodan method. We tested distance-independent and distance-dependent competition indices that included or excluded crown area variables. An equation was generated to describe the relation between diameter at breast height and crown diameter, since these were highly correlated (r = 0.87); this permitted calculation of the growth space required for the trees in the stand. It is important to carefully choose the variables and competition indices to be tested in each study case. Including crown variables did not improve prediction ability to overcome the performance of the Stage distance-independent index. In general, the distance-independent indices performed better than the distance-dependent ones, even the stand arrangement in our study area was modified through thinning, mortality, and natural regeneration. When the goal is to better understand the ecological significance of a competition index and not only its statistical ability to predict short-term growth, simpler indices are recommended. MenosThe objective of this study was to select and discuss indices to explain competition among trees in an unmanaged stand in order to support decision-making in forest management. The work was carried out in a plantation of Araucaria angustifolia (Bertol.) Kuntze located in a national forest in southern Brazil. The plantation was established in 1946 in 2 × 2 m spacing, with only one thinning that happened sometime between 1970 and 1980. Forty-six sample plots were established using an adaptation of the Prodan method. We tested distance-independent and distance-dependent competition indices that included or excluded crown area variables. An equation was generated to describe the relation between diameter at breast height and crown diameter, since these were highly correlated (r = 0.87); this permitted calculation of the growth space required for the trees in the stand. It is important to carefully choose the variables and competition indices to be tested in each study case. Including crown variables did not improve prediction ability to overcome the performance of the Stage distance-independent index. In general, the distance-independent indices performed better than the distance-dependent ones, even the stand arrangement in our study area was modified through thinning, mortality, and natural regeneration. When the goal is to better understand the ecological significance of a competition index and not only its statistical ability to predict short-term growth, simpler indices are... Mostrar Tudo |
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Palavras-Chave: |
Growing space; Manejo florestal. |
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Thesagro: |
Araucária Angustifólia; Crescimento; Espécie Nativa; Pinheiro do Paraná. |
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Thesaurus Nal: |
Forest management. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02330naa a2200265 a 4500
001 2124864
005 2020-09-11
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.foreco.2020.118472$2DOI
100 1 $aCURTO, R. De A.
245 $aEffectiveness of competition indices for understanding growth in an overstocked stand.$h[electronic resource]
260 $c2020
520 $aThe objective of this study was to select and discuss indices to explain competition among trees in an unmanaged stand in order to support decision-making in forest management. The work was carried out in a plantation of Araucaria angustifolia (Bertol.) Kuntze located in a national forest in southern Brazil. The plantation was established in 1946 in 2 × 2 m spacing, with only one thinning that happened sometime between 1970 and 1980. Forty-six sample plots were established using an adaptation of the Prodan method. We tested distance-independent and distance-dependent competition indices that included or excluded crown area variables. An equation was generated to describe the relation between diameter at breast height and crown diameter, since these were highly correlated (r = 0.87); this permitted calculation of the growth space required for the trees in the stand. It is important to carefully choose the variables and competition indices to be tested in each study case. Including crown variables did not improve prediction ability to overcome the performance of the Stage distance-independent index. In general, the distance-independent indices performed better than the distance-dependent ones, even the stand arrangement in our study area was modified through thinning, mortality, and natural regeneration. When the goal is to better understand the ecological significance of a competition index and not only its statistical ability to predict short-term growth, simpler indices are recommended.
650 $aForest management
650 $aAraucária Angustifólia
650 $aCrescimento
650 $aEspécie Nativa
650 $aPinheiro do Paraná
653 $aGrowing space
653 $aManejo florestal
700 1 $aMATTOS, P. P. de
700 1 $aBRAZ, E. M.
700 1 $aCANETTI, A.
700 1 $aPÉLLICO NETTO, S.
773 $tForest Ecology and Management$gv. 477, 118472, 2020. 11 p.
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Registro original: |
Embrapa Florestas (CNPF) |
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Biblioteca |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
25/09/2018 |
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Data da última atualização: |
11/03/2019 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
SANTOS, F. M.; MACEDO, G. C. DE; BARRETO, W. T. G.; OLIVEIRA-SANTOS, L. G. R.; GARCIA, C. M.; MOURAO, G. de M.; PORFÍRIO, G. E. de O.; MARINO, E. D.; ANDRE, M. R.; PERLES, L.; OLIVEIRA, C. E. de; ANDRADE, G. B. de; JANSEN, A. M.; HERRERA, H. M. |
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Afiliação: |
FILIPE MARTINS SANTOS, UCDB; GABRIEL CARVALHO DE MACEDO, UCDB; WANESSA TEIXEIRA GOMES BARRETO, UFMS; LUIZ GUSTAVO RODRIGUES OLIVEIRA-SANTOS, UFMS; CAROLINA MARTINS GARCIA, UFMS; GUILHERME DE MIRANDA MOURAO, CPAP; GRASIELA EDITH DE OLIVEIRA PORFÍRIO, UCDB; ELIZANGELA DOMENIS MARINO, UCDB; MARCOS ROGÉRIO ANDRE, UNESP; LÍVIA PERLES, UNESP; CARINA ELISEI DE OLIVEIRA, UCDB; GISELE BRAZILIANO DE ANDRADE, UCDB; ANA MARIA JANSEN, FIOCRUZ; HEITOR MIRAGLIA HERRERA, UFMS. |
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Título: |
Outcomes of Trypanosoma cruzi and Trypanosoma evansi infections on health of Southern coati (Nasua nasua), crab-eating fox (Cerdocyon thous), and ocelot (Leopardus pardalis) in the Brazilian Pantanal. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Plos One, v. 13, n. 8, p. 1-15, 2018. |
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Idioma: |
Inglês |
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Conteúdo: |
The occurrence of Trypanosoma spp. in wild carnivore populations has been intensively investigated during the last decades. However, the impact of these parasites on the health of free-living infected animals has been largely neglected. The Pantanal biome is the world's largest seasonal wetland, harboring a great diversity of species and habitats. This includes 174 species of mammals, of which 20 belong to the order Carnivora. The present study aimed to investigate the effect of Trypanosoma evansi and Trypanosoma cruzi infections and coinfections on the health of the most abundant carnivores in the Pantanal: coati (Nasua nasua), crab-eating fox (Cerdocyon thous), and ocelot (Leopardus pardalis). We captured 39 coatis, 48 crab-eating foxes, and 19 ocelots. Diagnostic tests showed T. cruzi infection in 7 crab-eating foxes and 5 coatis. Additionally, 7 crab-eating foxes, 10 coatis, and 12 ocelots were positive for T. evansi. We observed coinfections in 9 crab-eating foxes, 8 coatis, and 2 ocelots. This is the first report of T. evansi and T. cruzi infection on the health of free-living ocelots and crab-eating foxes. We showed that single T. evansi or T. cruzi infection, as well as coinfection, caused some degree of anemia in all animals, as well as an indirect negative effect on body condition in coatis and crab-eating foxes via anemia indicators and immune investment, respectively. Furthermore, the vigorous immune investment observed in sampled coatis, crab-eating foxes and ocelots infected by T. evansi, T. cruzi and coinfected can be highly harmful to their health. Overall, our results indicate that single and combined infection with T. evansi and T. cruzi represent a severe risk to the health of wild carnivores in the Pantanal region. MenosThe occurrence of Trypanosoma spp. in wild carnivore populations has been intensively investigated during the last decades. However, the impact of these parasites on the health of free-living infected animals has been largely neglected. The Pantanal biome is the world's largest seasonal wetland, harboring a great diversity of species and habitats. This includes 174 species of mammals, of which 20 belong to the order Carnivora. The present study aimed to investigate the effect of Trypanosoma evansi and Trypanosoma cruzi infections and coinfections on the health of the most abundant carnivores in the Pantanal: coati (Nasua nasua), crab-eating fox (Cerdocyon thous), and ocelot (Leopardus pardalis). We captured 39 coatis, 48 crab-eating foxes, and 19 ocelots. Diagnostic tests showed T. cruzi infection in 7 crab-eating foxes and 5 coatis. Additionally, 7 crab-eating foxes, 10 coatis, and 12 ocelots were positive for T. evansi. We observed coinfections in 9 crab-eating foxes, 8 coatis, and 2 ocelots. This is the first report of T. evansi and T. cruzi infection on the health of free-living ocelots and crab-eating foxes. We showed that single T. evansi or T. cruzi infection, as well as coinfection, caused some degree of anemia in all animals, as well as an indirect negative effect on body condition in coatis and crab-eating foxes via anemia indicators and immune investment, respectively. Furthermore, the vigorous immune investment observed in sampled coatis, crab-eating foxes and oc... Mostrar Tudo |
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Thesagro: |
Animal de Caca; Animal Selvagem; Trypanosoma Cruzi. |
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Thesaurus NAL: |
Carnivores; Trypanosoma; Wild animals. |
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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/183485/1/2018-Outcomes-of-Trypanosoma-cruzi.pdf
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Marc: |
LEADER 02856naa a2200349 a 4500
001 2096260
005 2019-03-11
008 2018 bl uuuu u00u1 u #d
100 1 $aSANTOS, F. M.
245 $aOutcomes of Trypanosoma cruzi and Trypanosoma evansi infections on health of Southern coati (Nasua nasua), crab-eating fox (Cerdocyon thous), and ocelot (Leopardus pardalis) in the Brazilian Pantanal.$h[electronic resource]
260 $c2018
520 $aThe occurrence of Trypanosoma spp. in wild carnivore populations has been intensively investigated during the last decades. However, the impact of these parasites on the health of free-living infected animals has been largely neglected. The Pantanal biome is the world's largest seasonal wetland, harboring a great diversity of species and habitats. This includes 174 species of mammals, of which 20 belong to the order Carnivora. The present study aimed to investigate the effect of Trypanosoma evansi and Trypanosoma cruzi infections and coinfections on the health of the most abundant carnivores in the Pantanal: coati (Nasua nasua), crab-eating fox (Cerdocyon thous), and ocelot (Leopardus pardalis). We captured 39 coatis, 48 crab-eating foxes, and 19 ocelots. Diagnostic tests showed T. cruzi infection in 7 crab-eating foxes and 5 coatis. Additionally, 7 crab-eating foxes, 10 coatis, and 12 ocelots were positive for T. evansi. We observed coinfections in 9 crab-eating foxes, 8 coatis, and 2 ocelots. This is the first report of T. evansi and T. cruzi infection on the health of free-living ocelots and crab-eating foxes. We showed that single T. evansi or T. cruzi infection, as well as coinfection, caused some degree of anemia in all animals, as well as an indirect negative effect on body condition in coatis and crab-eating foxes via anemia indicators and immune investment, respectively. Furthermore, the vigorous immune investment observed in sampled coatis, crab-eating foxes and ocelots infected by T. evansi, T. cruzi and coinfected can be highly harmful to their health. Overall, our results indicate that single and combined infection with T. evansi and T. cruzi represent a severe risk to the health of wild carnivores in the Pantanal region.
650 $aCarnivores
650 $aTrypanosoma
650 $aWild animals
650 $aAnimal de Caca
650 $aAnimal Selvagem
650 $aTrypanosoma Cruzi
700 1 $aMACEDO, G. C. DE
700 1 $aBARRETO, W. T. G.
700 1 $aOLIVEIRA-SANTOS, L. G. R.
700 1 $aGARCIA, C. M.
700 1 $aMOURAO, G. de M.
700 1 $aPORFÍRIO, G. E. de O.
700 1 $aMARINO, E. D.
700 1 $aANDRE, M. R.
700 1 $aPERLES, L.
700 1 $aOLIVEIRA, C. E. de
700 1 $aANDRADE, G. B. de
700 1 $aJANSEN, A. M.
700 1 $aHERRERA, H. M.
773 $tPlos One$gv. 13, n. 8, p. 1-15, 2018.
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Embrapa Pantanal (CPAP) |
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