Forest Cover in Tunisia Before and After the 2011 Tunisian Revolution: a Spatial Analysis Approach

2018 ◽  
Vol 2 (2) ◽  
Author(s):  
Hammadi Achour ◽  
Ahmed Toujani ◽  
Touhami Rzigui ◽  
Sami Faïz
Keyword(s):  
Spatial Analysis ◽  
Forest Cover ◽  
Analysis Approach ◽  
Before And After ◽  
Tunisian Revolution

scholarly journals Evaluating the environmental impact of payments for ecosystem services in Coatepec (Mexico) using remote sensing and on-site interviews

2011 ◽  
Vol 38 (4) ◽  
pp. 426-434 ◽  
Author(s):  
JASON SCULLION ◽  
CRAIG W. THOMAS ◽  
KRISTINA A. VOGT ◽  
OCTAVIO PÉREZ-MAQUEO ◽  
MILES G. LOGSDON
Keyword(s):  
Remote Sensing ◽  
Ecosystem Services ◽  
Forest Cover ◽  
Remote Sensing Data ◽  
Environmental Benefits ◽  
Payments For Ecosystem Services ◽  
Programme Implementation ◽  
Before And After ◽  
Monitoring And Enforcement ◽  
Landsat Satellite

SUMMARYOver the last decade, hundreds of payments for ecosystem services (PES) programmes have been initiated around the world, but evidence of their environmental benefits remains limited. In this study, two PES programmes operating in the municipality of Coatepec (Mexico) were evaluated to assess their effectiveness in protecting the region's endangered upland forests. Landsat satellite data were analysed to assess changes in forest cover before and after programme implementation using a difference-in-differences estimator. Additionally, surveys and interviews were conducted with local residents and a subset of PES programme participants to evaluate the programmes’ social and environmental impacts, particularly the effect of the programmes on landowner behaviour. The remote-sensing data show that deforestation was substantially lower on properties receiving PES payments compared to properties not enrolled in the programmes, but the programmes did not prevent the net loss of forests within Coatepec. Moreover, the on-site interviews suggest that the payments may have had little impact on deforestation rates, and that other factors contributed to the conservation of forests in PES properties. These findings suggest that risk-targeted payments, robust monitoring and enforcement programmes, and additional conservation initiatives should be included in all PES schemes to ensure environmental effectiveness.

scholarly journals PEMERIKSAAN KANDUNGAN ZAT KIMIA FORMALIN PADA BAKSO IKAN DAN TAHU

2020 ◽  
Vol 5 (1) ◽  
pp. 81
Author(s):  
Tuti Handayani ◽  
Sherly Mutiara
Keyword(s):  
Health Education ◽  
Qualitative Analysis ◽  
Experimental Method ◽  
Chemical Compound ◽  
Food Additives ◽  
Food Products ◽  
Analysis Approach ◽  
Toxic Chemical ◽  
Protein Sources ◽  
Before And After

<p><em>Formaldehyde a toxic chemical compound. Formaldehyde is prohibited for use in food according to the RI Minister of Health Regulation No.033 of 2012 concerning food additives. Meatballs, Fish and Tofu are protein sources of food. This material is easily damaged by microorganisms. There have been many cases of formaldehyde found in food products in Indonesia. The purpose of this study was to determine the presence or absence of formaldehyde in fish, meatball and tofu before and after providing health education. the method used in this study is an experimental method using a Qualitative Analysis approach. The results obtained were found 16  samples (fish and dry fish) is positive of formaldehyde. after providing education to traders the 15 samples still found in the market. That means counselling is not effective as an effort to eliminate formaldehyde in food products.</em></p>

scholarly journals Identification of land cover changes before and after forest and land fires in conservation areas of North Sumatra, Indonesia

2021 ◽  
Vol 912 (1) ◽  
pp. 012026
Author(s):  
A S Thoha ◽  
N Sulistiyono ◽  
N Saraswita ◽  
D Wiranata ◽  
S M Sirait ◽  
...  
Keyword(s):  
Land Cover ◽  
Forest Fires ◽  
Forest Cover ◽  
Land Cover Changes ◽  
Conservation Areas ◽  
Field Verification ◽  
Before And After ◽  
Temporal And Spatial ◽  
Wildlife Reserve ◽  
North Sumatra

Abstract Damage to conservation areas in North Sumatra can be mitigated by understanding the pattern of land cover change, which can be performed by detecting hotspots and their temporal and spatial patterns. This study aimed to explore land cover spatially and temporally before and after forest fires in the conservation areas in North Sumatra. Data on the hotspots, satellite imagery, land cover maps, and field verification were used to see the transition of land cover changes before and after forest and land fires. Temporal and spatial analysis was employed to see the trend of land cover changes of the land before and after the fires. Field verification was conducted through observations and interviews related to land cover conditions in the field caused by forest and land fires. This study found three conservation areas with the highest number of hotspots in 2014 in the period 2001-2019, including Gunung Leuser National Park (GLNP), Dolok Surungan Wildlife Reserve, and Barumun Wildlife Reserve during the 2001-2019 period. In 2010 and 2014 there were strong indications of a large area of land burning in three conservation areas. The burned land was near the outer boundary of the conservation areas and continued to expand into the areas over time. The area of the non-forest cover was relatively stable between periods prior to the discovery of several hotspots. Changes in forest cover to non-forest have become more widespread after the highest number of hotspots were detected in 2010. Conservation area management and various parties need to prevent the expansion of forest clearing considering the strategic role especially in GNLP as a world heritage.

scholarly journals Relationship between local presence and density of Aedes aegypti eggs with dengue cases: a spatial analysis approach

2018 ◽  
Vol 23 (11) ◽  
pp. 1269-1279 ◽  
Author(s):  
Bernardino Cláudio de Albuquerque ◽  
Rosemary Costa Pinto ◽  
Megumi Sadahiro ◽  
Vanderson Souza Sampaio ◽  
Daniel Barros de Castro ◽  
...  
Keyword(s):  
Spatial Analysis ◽  
Aedes Aegypti ◽  
Analysis Approach

scholarly journals Recovery within a population of the Critically Endangered citron-crested cockatoo Cacatua sulphurea citrinocristata in Indonesia after 10 years of international trade control

Oryx ◽  
2006 ◽  
Vol 40 (2) ◽  
pp. 161-167 ◽  
Author(s):  
Alexis J. Cahill ◽  
Jonathan S. Walker ◽  
Stuart J. Marsden
Keyword(s):  
International Trade ◽  
Forest Cover ◽  
Population Data ◽  
Small Population ◽  
Forest Patches ◽  
Field Methods ◽  
Forest Patch ◽  
Forest Sites ◽  
Before And After ◽  
Trade Control

Moratoria on international trade are frequently used to protect threatened species but few studies have examined their effectiveness in allowing populations to recover. We present population data collected before and after a moratorium on trade in the citron-crested cockatoo Cacatua sulphurea citrinocristata, a distinctive subspecies of the yellow-crested cockatoo endemic to Sumba, Indonesia. Before legal trade ceased in 1993 numbers of cockatoos leaving Sumba averaged c. 1,600 per year, and the 1992 population, estimated at 3,200, surely could not sustain such a level of trade. We surveyed cockatoos in four forest patches on Sumba in 1992, and then surveyed these same forest patches 10 years later, using the same field methods. Forest cover within the four patches was similar between years. We recorded a statistically significant increase in overall cockatoo density, from c. 2 birds per km2 in 1992 to >4 per km2 in 2002. Group sizes were also larger in 2002 than in 1992. Densities at two forest sites had increased considerably, at another the population was stable, but at one small forest patch a small population in 1992 had probably decreased. While the population has made a modest recovery, densities remain low compared to cockatoo populations elsewhere. Illegal trade is known to persist and its volume should be monitored closely.

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