The recovery of logged forests proves that a viable management is possible in the Venezuelan Guayana Shield
Aim of study: To compare the diversity and biomass of logged forests, with different ages after harvesting and the risk of their degradation to liana forests. Area of study: We studied 18 plots at the central zone of the Imataca Forest Reserve (Guayana shield), Venezuela. Material and methods...
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| Format: | Article |
| Language: | English |
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Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria
2022-11-01
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| Series: | Forest Systems |
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| Online Access: | https://revistas.inia.es/index.php/fs/article/view/19267 |
| _version_ | 1797986804304969728 |
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| author | José R. Lozada Yrma A. Carrero Mariano Durán Pilar Soriano |
| author_facet | José R. Lozada Yrma A. Carrero Mariano Durán Pilar Soriano |
| author_sort | José R. Lozada |
| collection | DOAJ |
| description |
Aim of study: To compare the diversity and biomass of logged forests, with different ages after harvesting and the risk of their degradation to liana forests.
Area of study: We studied 18 plots at the central zone of the Imataca Forest Reserve (Guayana shield), Venezuela.
Material and methods: We used 1-ha plots, to measure individuals with dbh > 10 cm in control plots (0 years) and in logged plots with 3, 9, 12, 15 and 18 years after logging. The main variables evaluated were enlarge importance index (EII), richness (R), Shannon-Weaner index (H´), Alpha Fischer (α), basal area for commercial species (BA_comm), above-ground carbon (C) and lianas abundance at the understory (Lianas_%Au).
Main results: Diversity variables (R: 62-77 spp ha-1, p: 0.117-0.838; H´: 2.8-3.4, p: 0.181-0.677; α: 18.6-25.4, p: 0.293-0.922) and biomass (89.6-180.2 MgC ha-1, p: 0.171-0.895) did not have significant differences between control and most of the logged plots. Only the 18 years-old forests had statistically higher values of diversity (R: 81-94 spp ha-1, p: 0.000; H´: 3.8-3.9, p: 0.000; α: 26.8-31.7, p: 0.000), perhaps due to a high impact skidding operation. Commercial species were not recovering after logging.
Research highlights: Forest management can be viable in this area, but it requires reduced impact logging techniques and better silvicultural systems to guarantee future harvest of high value commercial timber.
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| first_indexed | 2024-04-11T07:37:44Z |
| format | Article |
| id | doaj.art-ba9cc48d795343c887d2fd95dfd6d3f0 |
| institution | Directory Open Access Journal |
| issn | 2171-9845 |
| language | English |
| last_indexed | 2024-04-11T07:37:44Z |
| publishDate | 2022-11-01 |
| publisher | Instituto Nacional de Investigación y Tecnología Agraria y Alimentaria |
| record_format | Article |
| series | Forest Systems |
| spelling | doaj.art-ba9cc48d795343c887d2fd95dfd6d3f02022-12-22T04:36:40ZengInstituto Nacional de Investigación y Tecnología Agraria y AlimentariaForest Systems2171-98452022-11-0131310.5424/fs/2022313-19267The recovery of logged forests proves that a viable management is possible in the Venezuelan Guayana ShieldJosé R. Lozada0Yrma A. Carrero1Mariano Durán2Pilar Soriano3Forestry Development Research Institute, Forestry and Environmental Sciences Faculty, Los Andes University, Mérida 5101, VenezuelaMSc Program on Forest Management, Forestry and Environmental Sciences Faculty, Los Andes University, Mérida 5101, VenezuelaForest Management Department, Forestry and Environmental Sciences Faculty, Los Andes University, Mérida 5101, VenezuelaBotanic Garden, Valencia University, Valencia 46008, Spain Aim of study: To compare the diversity and biomass of logged forests, with different ages after harvesting and the risk of their degradation to liana forests. Area of study: We studied 18 plots at the central zone of the Imataca Forest Reserve (Guayana shield), Venezuela. Material and methods: We used 1-ha plots, to measure individuals with dbh > 10 cm in control plots (0 years) and in logged plots with 3, 9, 12, 15 and 18 years after logging. The main variables evaluated were enlarge importance index (EII), richness (R), Shannon-Weaner index (H´), Alpha Fischer (α), basal area for commercial species (BA_comm), above-ground carbon (C) and lianas abundance at the understory (Lianas_%Au). Main results: Diversity variables (R: 62-77 spp ha-1, p: 0.117-0.838; H´: 2.8-3.4, p: 0.181-0.677; α: 18.6-25.4, p: 0.293-0.922) and biomass (89.6-180.2 MgC ha-1, p: 0.171-0.895) did not have significant differences between control and most of the logged plots. Only the 18 years-old forests had statistically higher values of diversity (R: 81-94 spp ha-1, p: 0.000; H´: 3.8-3.9, p: 0.000; α: 26.8-31.7, p: 0.000), perhaps due to a high impact skidding operation. Commercial species were not recovering after logging. Research highlights: Forest management can be viable in this area, but it requires reduced impact logging techniques and better silvicultural systems to guarantee future harvest of high value commercial timber. https://revistas.inia.es/index.php/fs/article/view/19267ImatacaVenezuelan Amazontropical silvicultureloggingecological restorationabove-ground carbon stock |
| spellingShingle | José R. Lozada Yrma A. Carrero Mariano Durán Pilar Soriano The recovery of logged forests proves that a viable management is possible in the Venezuelan Guayana Shield Forest Systems Imataca Venezuelan Amazon tropical silviculture logging ecological restoration above-ground carbon stock |
| title | The recovery of logged forests proves that a viable management is possible in the Venezuelan Guayana Shield |
| title_full | The recovery of logged forests proves that a viable management is possible in the Venezuelan Guayana Shield |
| title_fullStr | The recovery of logged forests proves that a viable management is possible in the Venezuelan Guayana Shield |
| title_full_unstemmed | The recovery of logged forests proves that a viable management is possible in the Venezuelan Guayana Shield |
| title_short | The recovery of logged forests proves that a viable management is possible in the Venezuelan Guayana Shield |
| title_sort | recovery of logged forests proves that a viable management is possible in the venezuelan guayana shield |
| topic | Imataca Venezuelan Amazon tropical silviculture logging ecological restoration above-ground carbon stock |
| url | https://revistas.inia.es/index.php/fs/article/view/19267 |
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