scholarly journals Knowledge and Perception of Malaysian Forest Fringe Population towards Zika Infection

2021 ◽  
Vol 16 (2) ◽  
pp. 309
Keyword(s):  
PLoS ONE ◽  
2021 ◽  
Vol 16 (1) ◽  
pp. e0245087
Author(s):  
Leonardo Suveges Moreira Chaves ◽  
Eduardo Sterlino Bergo ◽  
Jan E. Conn ◽  
Gabriel Zorello Laporta ◽  
Paula Ribeiro Prist ◽  
...  

Inter-relationships among mosquito vectors, Plasmodium parasites, human ecology, and biotic and abiotic factors, drive malaria risk. Specifically, rural landscapes shaped by human activities have a great potential to increase the abundance of malaria vectors, putting many vulnerable people at risk. Understanding at which point the abundance of vectors increases in the landscape can help to design policies and interventions for effective and sustainable control. Using a dataset of adult female mosquitoes collected at 79 sites in malaria endemic areas in the Brazilian Amazon, this study aimed to (1) verify the association among forest cover percentage (PLAND), forest edge density (ED), and variation in mosquito diversity; and to (2) test the hypothesis of an association between landscape structure (i.e., PLAND and ED) and Nyssorhynchus darlingi (Root) dominance. Mosquito collections were performed employing human landing catch (HLC) (peridomestic habitat) and Shannon trap combined with HLC (forest fringe habitat). Nyssorhynchus darlingi abundance was used as the response variable in a generalized linear mixed model, and the Shannon diversity index (H’) of the Culicidae community, PLAND, and the distance house-water drainage were used as predictors. Three ED categories were also used as random effects. A path analysis was used to understand comparative strengths of direct and indirect relationships among Amazon vegetation classes, Culicidae community, and Ny. darlingi abundance. Our results demonstrate that Ny. darlingi is negatively affected by H´ and PLAND of peridomestic habitat, and that increasing these variables (one-unit value at β0 = 768) leads to a decrease of 226 (P < 0.001) and 533 (P = 0.003) individuals, respectively. At the forest fringe, a similar result was found for H’ (β1 = -218; P < 0.001) and PLAND (β1 = -337; P = 0.04). Anthropogenic changes in the Amazon vegetation classes decreased mosquito biodiversity, leading to increased Ny. darlingi abundance. Changes in landscape structure, specifically decreases in PLAND and increases in ED, led to Ny. darlingi becoming the dominant species, increasing malaria risk. Ecological mechanisms involving changes in landscape and mosquito species composition can help to understand changes in the epidemiology of malaria.


2021 ◽  
pp. 163-194
Author(s):  
Muneesa Banday ◽  
M. A. Islam ◽  
Nazir A. Pala ◽  
Megna Rashid ◽  
Peerzada Ishtiyak Ahmad ◽  
...  

Forests ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 411
Author(s):  
Emmanuel O. Acheampong ◽  
Jeffrey Sayer ◽  
Colin Macgregor ◽  
Sean Sloan

Research Highlights: Landscape approach principles were developed to address competing claims on resources at local scales. We used the principles to address agricultural expansion in Ghana’s forest reserves. Background and Objectives: Agricultural expansion is a major cause of Ghana’s forest-cover loss. Cultivation has totally deforested some forest reserves. The situation in Ghana illustrates the trade-off between attaining the Sustainable Development Goals (SDGs). SDG 1—reduction of poverty, and 2—achieving food security, are in conflict with SDG 15—protecting and restoring forests. We examined how farmers in forest fringe communities could be engaged in restoring degraded forests using the landscape approach and whether their livelihoods were improved through the use of this approach. Materials and Methods: The Ongwam II Forest Reserve in the Ashanti region of Ghana is encroached by farmers from two communities adjacent to the reserve. We employed the 10 principles of the landscape approach to engage farmers in restoring the degraded reserve. The flexibility of the landscape approach provided a framework against which to assess farmer behaviour. We encouraged farmers to plant trees on 10 ha of the degraded reserve and to benefit through the cultivation of food crops amongst the trees. Results: Access to fertile forest soils for cultivation was the main motivation for the farmers to participate in the reforestation project. The farmers’ access to natural and financial capital increased and they became food secure in the first year of the project’s operation. Conclusions: Effective implementation of several small-scale reforestation projects using the landscape approach could together lead to a forest transition, more trees in agricultural systems and better protection of residual natural forests while improving farmers’ livelihoods, all combining to achieve the SDGs.


2008 ◽  
Vol 38 (5) ◽  
pp. 1083-1094 ◽  
Author(s):  
Bernhard Denneler ◽  
Hugo Asselin ◽  
Yves Bergeron ◽  
Yves Bégin

The relative importance of fire and flooding on the population dynamics of eastern white-cedar ( Thuja occidentalis L.) and black ash ( Fraxinus nigra Marsh.) was evaluated in eight old-growth riparian stands of southwestern boreal Quebec, Canada. Rising water levels and decreasing fire frequency since the end of the Little Ice Age (ca. 1850) were expected to have favoured an inland migration of the riparian forest fringe, with the flood-tolerant black ash colonizing the lower parts of the shore terraces and eastern white-cedar the upper parts. Black ash was found to be restricted to the riparian zone (<200 cm elevation), whereas eastern white-cedar trees did not occur below 100 cm above lake level. Gaps of postfire eastern white-cedar recruitment were noted in stands exposed to riparian disturbances, whereas relatively continuous recruitment occurred at protected sites. Black ash, more tolerant to flooding and ice push, invaded the shore terrace sites left vacant by eastern white-cedar. The riparian forest fringe surrounding Lake Duparquet is currently migrating upland and this trend is expected to continue as water levels continue to increase and fire frequency continues to decrease during the 21st century.


2010 ◽  
Vol 143 (2) ◽  
pp. 128-137 ◽  
Author(s):  
Thomas Mignaud ◽  
Bruno Senterre ◽  
Jonas V. Müller ◽  
Jean Lejoly ◽  
Ingrid Parmentier

2012 ◽  
Vol 3 (2) ◽  
pp. 83-105
Author(s):  
Somnath Ghosal

The ever-increasing pressures on tropical forests due to the increasing population of socio-economically deprived communities dwelling in forest fringe areas are not only a matter of ecological concern, but also affect the sustainable livelihoods of these communities. Alternative sources of income are urgently needed for these communities. Forest is the principal natural resource for the Purulia, Bankura and West Midnapur districts of West Bengal, India. More sustainable harvesting of forest products, particularly Non-Timber Forest Products(NTFPs) and the production of value added products would therefore be the best possible way to improve the existing economic conditions of deprived forest fringe communities and save native forest biodiversity for the future.


2021 ◽  
Vol 16 (1) ◽  
pp. 190-206
Author(s):  
Chin Mun Wong ◽  

The World Health Organization (WHO) has declared Zika infection as Public Health Emergency of International Concern in 2016. In this study, we aimed to assess the knowledge and risk perception towards Zika infection among the forest fringe population in Malaysia. A cross-sectional study of with 433 adult respondents in Malaysia completed the assisted-administered validated questionnaire on knowledge and perception to Zika infection. Bidirectional analysis on the person and item abilities were tested using Statistical Package for the Social Sciences (SPSS) and Rasch. The knowledge and perception levels were tested against significant sociodemographic or socioeconomic variables using Pearson’s Chi Square; covariates were then adjusted at multivariate level using binary logistic regression. Both knowledge and perception domains were well-targeted. Complementing results from SPSS and Rasch showed poor knowledge and poor risk perception levels in slightly more than half of the respondents [knowledge score: 50.8% (SPSS), 55.4% (Rasch); perception score: (58.0% (SPSS), 58.2% (Rasch)]. With covariates adjusted, non-bumiputra (non-natives) of higher education level, higher household income and recent jungle visits showed good knowledge level. Adult, menopaused women from Perak state showed better risk perception level towards Zika. Majority of the forest fringe population in Malaysia have poor knowledge and risk perception towards the Zika infection. This questionnaire is a suitable tool to assess knowledge and perception towards Zika infection among the forest fringe populations in Southeast Asia.


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