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| Registros recuperados: 20 | |
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| MARIOT,ALEXANDRE; MANTOVANI,ADELAR; REIS,MAURÍCIO S. DOS. |
| Drimys brasiliensis Miers, locally known as cataia or casca-de-anta, is a native tree species of the Atlantic Rainforest. Its bark is harvested from natural populations. This study examined the recovery capacity of the bark of D. brasiliensis under different bark harvesting methods, as well as the influence of these approaches on its population dynamics and reproductive biology. While none of these treatments resulted in changes in phenological behavior or the rate of increase of diameter at breast height and tree height, the removal of wider bark strips resulted in lower rates of bark recovery and higher rates of insect attack and diseases. Accordingly, the results recommend using strips of bark 2 cm wide and 2 m long, with 4 cm between strips, for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bark harvesting; Medicinal plant; Sustainable management; Drimys brasiliensis; Insect attack. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301315 |
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| Diaz,Maria F; Silva,Wladimir. |
| Sphagnum species, primarily Sphagnum magellanicum Brid., are used internationally as a substrate for horticulture. Market demands have promoted indiscriminate exploitation leading to a number of potentially negative ecological and social consequences, including disruption of Sphagnum ecosystems, changes in water storage capacity of moss wetlands affecting water supply to rural communities and reduction of biodiversity. This study proposes improvements in harvesting techniques to ensure moss regeneration and promote sustainability of moss cover in harvested areas. The aim of this study was to determine the maximum harvesting depth for moss regeneration. Samples were taken and divided into sections associated with different depths. We recorded and marked the... |
| Tipo: Journal article |
Palavras-chave: Sphagnum moss; Sustainable management; Wetlands. |
| Ano: 2012 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392012000200021 |
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| De Lara, Michel; Doyen, Luc; Guilbaud, Therese; Rochet, Marie-joelle. |
| Fisheries management agencies have to drive resources on sustainable paths, i.e. within defined boundaries for an indefinite time. The viable-control approach is proposed as a relevant method to deal with sustainability. We analyse the ICES precautionary approach (PA) by means of the notion of viability domain, and provide a mathematical test for sustainability. It is found that the PA based on spawning-stock biomass (SSB) and fishing mortality (F) indicators is sustainable only when recruits make a significant contribution to SSB. In this case, advice based upon SSB, with an appropriate reference point, is sufficient to ensure sustainability. In all other cases, SSB is not a sufficient metric of stock productivity and must be complemented with other... |
| Tipo: Text |
Palavras-chave: Viability; Sustainable management; Indicators; ICES precautionary approach. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-2821.pdf |
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| Schlindwein,Gilson; Tonietto,Adilson; Abichequer,André Dabdab; Azambuja,Augusto Cruz de; Lisboa,Bruno Brito; Vargas,Luciano Kayser. |
| ABSTRACT: The objective of this study was to evaluate the fruit yield of naturally occurring populations of Pindo palms ( Butia odorata ) in different habitats and agricultural ecosystems. Three areas were selected in the municipalities of Barra do Ribeiro, Tapes and Arambaré, all of which are located on the Litoral Médio in the state of Rio Grande do Sul, Brazil. Eleven 25x100m² plots were selected in the aforementioned areas, and fruit yield was evaluated in the 2008 and 2009 seasons. Chemical conditions of the soil in each plot, elevation of terrain, height, and density of the reproductive Pindo palms were also assessed. Data analysis revealed a strong correlation between the edaphic conditions and the yield from the Pindo palms. Tapes Pindo palms... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Butia odorata; Arecaceae; Chemical characteristics of the soil fruit yield; Sustainable management. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000200404 |
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| Brazil will benefit if it gains control of its vast Amazonian timber resources. Without immediate planning, the fate of much of the Amazon will be decided by predatory and largely unregulated timber interests. Logging in the Amazon is a transient process of natural resource mining. Older logging frontiers are being exhausted of timber resources and will face severe wood shortages within 5 yr. The Brazilian government can avoid the continued repetition of this process in frontier areas by establishing a network of National Forests (Florestas Nacionais or Flonas) to stabilize the timber industry and simultaneously protect large tracts of forest. Flonas currently comprise less than 2% of the Brazilian Amazon (83,000 km2). If all these forests were used for... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Amazon; Brazil; GIS model; Conservation; Logging; National forest; Production forest; Sustainable management; Tropical forest. |
| Ano: 2002 |
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| Registros recuperados: 20 | |
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