A potential habitat corridor for Western Purple-faced Langur between Forest Reserves in Sri Lanka: GIS as a tool in connectivity modelling

2019 ◽  
Vol 39 (3) ◽  
pp. 194-201
Author(s):  
P.A.B.G. Panagoda ◽  
V.P.A. Weerasinghe
2015 ◽  
Vol 62 ◽  
pp. 58-65 ◽  
Author(s):  
Louis Redon (de) ◽  
Isabelle Le Viol ◽  
Frédéric Jiguet ◽  
Nathalie Machon ◽  
Olivier Scher ◽  
...  

Phytotaxa ◽  
2017 ◽  
Vol 308 (1) ◽  
pp. 37
Author(s):  
W.A.M.P. ARIYARATHNE ◽  
DEEPTHI YAKANDAWALA ◽  
ROSABELLE SAMUEL ◽  
SIRIL WIJESUNDARA

Sri Lanka is a country with unique landscapes and positioning. Its land profile varies from coastal areas through lowland hills to central montane region, and the climatic zones governed by seasonal monsoons results in a significantly high biodiversity.         Sri Lanka together with Western Ghats is a biodiversity hot spot among the 35 regions known worldwide. Sri Lanka harbors 3154 species of which 894 are endemics belonging to different angiosperm families. The orchid flora of the country, with 189 known species including 55 endemics is one that contributes very much for this high endemism. However 70.6% are currently listed as nationally threatened species during National Red listing in 2012.         The present study was conducted to investigate the current status and occurrence of species of the family Orchidaceae within and outside the conservation areas including few unexplored/ undocumented regions in the country. Field visits were carried out mainly focusing on the flowering seasons. Fourteen different sites including Forest Reserves, Sanctuaries, Strict Nature Reserves and Wildlife Parks were taken into consideration during this study. Observations were made in the field and locations recorded, collected data were tabulated and compared with available information. The observation made during the present study would make a large contribution for updating the conservation status of orchids at national and global level red listing.


Land ◽  
2020 ◽  
Vol 9 (1) ◽  
pp. 27 ◽  
Author(s):  
Chithrangani WM Rathnayake ◽  
Simon Jones ◽  
Mariela Soto-Berelov

Land use and land cover change (LULCC) are dynamic over time and space due to human and biophysical factors. Accurate and up-to-date LULCC information is a mandatory part of environmental change analysis and natural resource management. In Sri Lanka, there is a significant temporal gap in the existing LULCC information due to the civil war that took place from 1983 to 2009. In order to fill this gap, this study presents a whole-country LULCC map for Sri Lanka over a 25-year period using Landsat time-series imagery from 1993 to 2018. The LandTrendr change detection algorithm, utilising the normalised burn ratio (NBR) and normalised difference vegetation index (NDVI), was used to develop spectral trajectories over this time period. A land cover change and disturbance map was created with random forest, using 2117 manually interpreted reference pixels, of which 75% were used for training and 25% for validation. The model achieved an overall accuracy of 94.14%. The study found that 890,003.52 hectares (ha) (13.5%) of the land has changed, while 72,266.31 ha (1%) was disturbed (but not permanently changed) over the last 25 years. LULCC was found to concentrate on two distinct periods (2000 to 2004 and 2010 to 2018) when social and economic stability allowed greater land clearing and investment opportunities. In addition, LULCC was found to impact forest reserves and protected areas. This new set of Sri Lanka-wide land cover information describing change and disturbance may provide a reference point for policy makers and other stakeholders to aid in decision making and for planning purposes.


2015 ◽  
Vol 21 ◽  
pp. 114-115
Author(s):  
Kavinga Gunawardane ◽  
Noel Somasundaram ◽  
Neil Thalagala ◽  
Pubudu Chulasiri ◽  
Sudath Fernando

Crisis ◽  
2010 ◽  
Vol 31 (1) ◽  
pp. 30-35 ◽  
Author(s):  
Sudath Samaraweera ◽  
Athula Sumathipala ◽  
Sisira Siribaddana ◽  
S. Sivayogan ◽  
Dinesh Bhugra

Background: Suicidal ideation can often lead to suicide attempts and completed suicide. Studies have shown that Sri Lanka has one of the highest rates of suicide in the world but so far no studies have looked at prevalence of suicidal ideation in a general population in Sri Lanka. Aims: We wanted to determine the prevalence of suicidal ideation by randomly selecting six Divisional Secretariats (Dss) out of 17 in one district. This district is known to have higher than national average rates of suicide. Methods: 808 participants were interviewed using Sinhala versions of GHQ-30 and Beck’s Scale for Suicidal Ideation. Of these, 387 (48%) were males, and 421 (52%) were female. Results: On Beck’s Scale for Suicidal Ideation, 29 individuals (4%) had active suicidal ideation and 23 (3%) had passive suicidal ideation. The active suicidal ideators were young, physically ill and had higher levels of helplessness and hopelessness. Conclusions: The prevalence of suicidal ideation in Sri Lanka is lower than reported from the West and yet suicide rates are higher. Further work must explore cultural and religious factors.


Crisis ◽  
2002 ◽  
Vol 23 (3) ◽  
pp. 104-107 ◽  
Author(s):  
Murad M. Khan

Summary: The Indian subcontinent comprises eight countries (India, Pakistan, Bangladesh, Nepal, Sri Lanka, Afghanistan, Bhutan, and the Maldives) and a collective population of more than 1.3 billion people. 10% of the world's suicides (more than 100,000 people) take place in just three of these countries, viz. India, Sri Lanka, and Pakistan. There is very little information on suicides from the other four countries. Some differences from suicides in Western countries include the high use of organophosphate insecticides, larger numbers of married women, fewer elderly subjects, and interpersonal relationship problems and life events as important causative factors. There is need for more and better information regarding suicide in the countries of the Indian subcontinent. In particular, studies must address culture-specific risk factors associated with suicide in these countries. The prevention of this important public health problem in an area of the world with myriad socio-economic problems, meager resources, and stigmatization of mental illness poses a formidable challenge to mental health professionals, policy makers, and governments of these countries.


1998 ◽  
Vol 53 (7) ◽  
pp. 771-777 ◽  
Author(s):  
John D. Rogers ◽  
Jonathan Spencer ◽  
Jayadeva Uyangoda

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