The effect of small-scale logging on stand characteristics and soil biogeochemistry in mangrove forests of Timor Leste

2008 ◽  
Vol 255 (3-4) ◽  
pp. 1359-1366 ◽  
Author(s):  
Daniel M. Alongi ◽  
Narciso A. de Carvalho
Land ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 432
Author(s):  
Robin Gutting ◽  
Ralf-Uwe Syrbe ◽  
Karsten Grunewald ◽  
Ulf Mehlig ◽  
Véronique Helfer ◽  
...  

Mangrove forests provide a large variety of ecosystem services (ES) to coastal societies. Using a case study focusing on the Ajuruteua peninsula in Northern Brazil and two ES, food provisioning (ES1) and global climate regulation (ES2), this paper proposes a new framework for quantifying and valuing mangrove ES and allow for their small-scale mapping. We modelled and spatialised the two ES from different perspectives, the demand (ES1) and the supply (ES2) side respectively. This was performed by combining worldwide databases related to the global human population (ES1) or mangrove distribution and canopy height (ES2) with locally derived parameters, such as crab catches (ES1) or species-specific allometric equations based on local estimates of tree structural parameters (ES2). Based on this approach, we could estimate that the area delivers the basic nutrition of about 1400 households, which equals 2.7 million USD, and that the mangrove biomass in the area contains 2.1 million Mg C, amounting to 50.9 million USD, if it were paid as certificates. In addition to those figures, we provide high-resolution maps showing which areas are more valuable for the two respective ES, information that could help inform management strategies in the future.


2018 ◽  
Author(s):  
A Dubuc ◽  
N. Waltham ◽  
R. Baker ◽  
C. Marchand ◽  
M. Sheaves

AbstractMangrove forests are important habitats for fish. However, their utilisation by fish, and the specific values they confer, are still not fully understood. This study describes how fish use mangrove forests in an Indo-Pacific mangrove-coral reef seascape. Sampling was conducted using underwater video cameras (UVCs) to describe spatial and temporal variations in fish assemblages across a small-scale (~ 2.5 km2) system, and over the tidal and lunar cycle. UVCs were deployed in the two main component habitats of mangrove forests: at the mangrove forest edge, and inside the forest (5 m from the forest edge), to establish patterns of utilisation of fish across the tidal and lunar cycle. Proximity to coral reefs had a strong influence on the mangrove fish community, as most fish recorded were reef-associated. Juveniles of 12 reef species were observed, including two species classified as vulnerable on the IUCN list, and one endemic species. Fish assemblages on the mangrove edge differed significantly from those inside the forest. Most fish utilised the forest edge, with few species making regular use of in-forest habitats, supporting the contention that most fish species remain on the edge and potentially retreat into the forest for opportunistic feeding, or when threatened by larger predators. Species-specific patterns of utilisation varied across the tidal and lunar cycle. Small differences in depth profiles and substrate across the small-scale system had a significant effect on fish assemblages, highlighting the importance of accounting for spatial heterogeneity in these factors. These data provide important information for managers to implement adequate conservation strategies that include broader interconnected habitat mosaics.


Geosaberes ◽  
2020 ◽  
Vol 11 ◽  
pp. 180
Author(s):  
Luciana De Souza Queiroz ◽  
Sergio Rossi ◽  
Aida Tapia Mercander ◽  
Camila Serra-Pompei ◽  
David Vide Pifarré ◽  
...  

Traditional communities situated in mangrove forests near the coast have developed a way of life based on ecosystem services associated with various uses and activities (firewood extraction, artisanal fishing, crab and clam harvesting, etc.).  The importance of food security and sovereignty is frequently mentioned in the context of small-scale fishing but has seldom been articulated as an explicit objective. The present work identifies a knowledge gap concerning the profits generated by artisanal exploitation, which are not recorded in official statistics. We compiled economic data from Cumbe and Curral Velho, in the state of Ceará (Brazil), using a combination of techniques (tracking tables, interviews, zoning and questionnaires). Fishermen typically work up to 5 hours a day for 4.6 days a week, working 23 hours/week, and earning € 127.20/week or € 5.53€/hour of work. It is concluded that the artisanal fishing carried out by coastal communities is not only economically viable but competes directly with industrial monocultures in terms of monetary income and workers’ leisure time.


2013 ◽  
Vol 12 (2) ◽  
pp. 130-145 ◽  
Author(s):  
Austen Moore ◽  
Tom Dormody ◽  
Dawn VanLeeuwen ◽  
Amy Harder

Author(s):  
Juviano Xaiver ◽  
Luh Komang Candra Dewi ◽  
Augusto da Conçeicão Soares

This study aims to determine "How is the marketing strategy for Small Medium Enterprises in the tourism sector, in Atauro tourism object, Dili, Timor-Leste based on SWOT analysis" with indicators of this marketing strategy using the marketing mix or 7P, including: Product (The Services) /, Price, Place / Business Location, Promotion / Promotion Strategy, People / Human Resources (HR), Process / Process or Business Activities, Physical Evidence / Company Physical Evidence. The population in the research or key informants are business actors in the field of tourism, tourists and local officials, with a total of 34 informants with saturated sample determination to take all small and medium-scale business activities in the tourism sector from 4 predetermined villages and the accidental sampling method for tourists. or visitors and probability sampling methods for local officials. The type of data used in this research is qualitative data and data sources will be obtained through interviews, focus group discussions, and direct observation at the place of the research object, with the analysis tool used in this research is SWOT analysis. The results of the analysis, through the evaluation of internal and external matrices, show that the average value is 1.00, the total score for external evaluation is 2.52, the Matrix and EFE results, can be found through the total IFE score with a value of 2.77 as well as the total EFE score of 2.52. Based on the internal and external matrix, the results show that the achievements of the Small and Medium Enterprises group in the tourism sector of Atauro Island, Dili, Timor-Leste are in the quadrant position of column V which means “stability” with a stable position. Strategies that are suitable for this position are market penetration and product development.


Author(s):  
M.G. Chapman ◽  
K. Michie ◽  
T. Lasiak

Leaf litter, pneumatophores, saplings and patches of macro-algae are common characteristics of habitats in mangrove forests. The amounts of these vary among different parts of mangrove forests. In Port Jackson, some parts of forests under the canopy of trees appeared to have more saplings, longer pneumatophores and greater amounts of leaf litter and macro-algae than did other similarly shaded parts of the forest. The former also appeared to have greater densities of snails, Ophicardelus spp. and Salinator solida, which was confirmed by quantitative sampling. Two field experiments were carried out, in which the amount of litter or algae and the length of the pneumatophores, were manipulated to test six alternative models about influences of these features of habitat that might explain these patterns. In each experiment, both species decreased rapidly in plots with reduced litter and showed no response to the length of the pneumatophores. In the first experiment, there was no response to reductions of algae, but in the second experiment, each species showed a decrease in density when algae were reduced. The implications of these rapid responses to changes in small-scale features of habitat are discussed with respect to managing disturbed habitats.


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