Developing positive attitudes by upgrading the environmental literacy level is very important to protect nature from anthropogenic pressures. This study evaluates existing knowledge, awareness, attitude and behavior, perceived issues, and solutions of undergraduates on major environmental issues of two national universities with different teaching methods of the Open University of Sri Lanka (OUSL: open distance learning) and the University of Peradeniya (UP: conventional). A questionnaire survey (29 structured and 04 open-ended items) was adapted with 800 undergraduates of engineering, science, management, law, and arts/ social sciences disciplines. We computerized descriptive statistics, such as frequency and cross-tabulation, and mean comparison using the SPSS software. The results showed that there was no significant difference (p > 0.05) of existing environmental knowledge in undergraduates of two universities. However, there was a significant difference in undergraduates’ family income (F = 5.387, p < 0.001) and family educational background (p < 0.05) with environmental knowledge. School education played a main role in building environmental concepts for undergraduates. The environmental attitude and behavior of both student groups showed a fairly favorable status. The majority of respondents suggested that TV and radio were the most effective media for environmental awareness. Undergraduates of the OUSL and UP were more interested in “tree planting”/ “gardening” (22.7%) and “hiking (mountain climbing)” (25.7%), respectively. Both OUSL and UP groups recognized “global warming” as the major global environmental issue and air pollution as the local issue. This study highlights the importance of building environmental knowledge among undergraduates, mainly on global and local environmental issues, to improve sustainable environment management.

The study aims to examine the environmental literacy level of G.C.E A/L students (comparable to British Advanced Level) in the Kandy District, Sri Lanka, and to evaluate environment modules embedded into the curriculum. Furthermore, we find the relationships between environmental literacy level and socioeconomic and discipline levels. A survey with a sample of 300 students was selected randomly from four different disciplines, with 25 students in each subject (biological science, mathematics, arts, and commerce) from three different types of schools (Public, Private, and International). A piloted, self-administered, and structured questionnaire with 44 items under six sections (personal background, environmental issues, attitudes, behavior, suggestion, and mitigation) was randomly distributed among the study sample. Results showed that most respondents reside in an urban area, the education level of parents was positioned in the G.C.E. (A/L) category, and the monthly total family income was more than SLR 90,000.00. Overall, the environmental literacy (EL) was similar among students of three different types of schools. The type of permanent residence, discipline, and educational background of parents were recognized as determining factors of EL levels (p < 0.05). The environmental literacy knowledge of biological science students was the highest (44%), followed by mathematics (36%), art (32%), and commerce (28%). Furthermore, the EL of the biology discipline was significantly different from commerce (18%) and art (14%) students. Students acquired environmental knowledge from television and radio (44%), internet (22%), school (27%), and parents (7%). The A/L Curriculum evaluation results proved that much less environment-related components were included in the commerce, art, and mathematics subjects. Of the disciplines, geography (35%) and biological science (11%) included a higher amount of EL knowledge, comparatively. Students suggested that recycling/ reuse of waste conserves natural resources, the green building concept, and the use of public transportation to conserve the environment. This study recommends that environmental concepts should be integrated with formal G.C.E A/L syllabus with activity learning, especially for non-science disciplines, and that environment-related television and radio programs should be enhanced.

This study evaluates multi-year changes of vegetation in the Sinharaja forest reserve using mappable vegetation related indices viz., Normalized Difference Vegetation Index (NDVI) and Burn Index (BI). Land-cover changes in the Sinharaja forest reserve region are detected using Landsat 7 ETM+ images for 1993, 2001, and 2005. Seven individual bands of each image were converted to new multiband files by layer stacking using ENVI ® 4.5. Then the multiband files were re-projected to UTM Zone 44 North, WGS-84 Datum. Each data set was exported to ENVI ® EX software package to detect the changes between time steps based on NDVI and BI using an image difference tool. Land-cover data, which were obtained from the DIVA GIS web portal were compared with Landsat image data. Results of BI showed that the forest reserve fringe was vulnerable to forest fire. For example, 1993-2001 period 160 ha identified as burn area, while it was 79 ha in 2001-2005 and 10 ha for the entire period of 1993-2005. NDVI resulted in a 962 ha increase of vegetation prime at the western Sinharaja in 2001-2005 periods. In addition, a 15 ha decrease in vegetation for 1993-2005 periods. The results are visualized using an embedded 3D render window of Google Earth and 2D view of ArcGIS explorer online. In conclusion, in-situ ground truthing data for the fire-influenced area is important to implement sustainable forest resource management at the Sinharaja forest reserve.

A sufficient knowledge on prehistoric culture and habitat of earliest Homo sapiens (Balangoda man) is available in Batadomba-lena cave, a noticeable rock shelter in lowland rainforest of southwestern Sri Lanka goes upto Pleistocene and Holocene eras. Late Pleistocene inhabitants of Batadombalena cave’s foraged for a broad spectrum of plant and mainly arboreal animal resources such as, monkeys, squirrels and rainforest snails etc. Archaeo-faunal evidence would help to describe the prehistoric man eating behavior as well as availability of nature pre-historic flora, fauna and environmental status. The family Acavidae is very sensitive to climatic variations, hence used as a bio-indicator to describe the variations of paleo-climatic nature. This study examined the morphological features of 20 samples of Acavidae family (living/fossil samples of Acavus superbus, and sub fossil samples of Oligospira waltoni) collected from soils by digger method in 2005 and compared with 20 samples from the same area at presently available. The shell characters of snails such as, height, width, diameter of mouth, thickness of lip, and angular of axis were measured and subjected to multivariate analysis to understand how climatic variability and nature of paleo-diet contribute survival of Acavidae species. Results showed that Acavus superbus living species had large shell characteristics than the sub fossils. Results of similar study in the same climatic status in 2000 showed that the shell measurements of Acavus superbus are relatively larger than both living and sub fossils in Batadobalena cave. Ordination diagram derived from species shell characteristics showed that Acavus superbus living species grouped as scattered /diffuse clusters, while sub fossil species grouped as a single cluster at the center of the ordination diagram. It is imply a trend of speciation /diversification of Acavus species from Pleistocene era to date. Multivariate analyses prove that, a strong positive correlation of species characteristics, such as height (r = 0.62), thickness of lip (r = 0.544) and angular of axis (r = 0.744), and a strong negative relationship (r = 0.832) for shell width for the species were observed. Our results are useful to compare with other fossil snails to see whether the climate change influence for changing body size. In conclusion, palaeo-environment, and present environment variation has been occurred in minimum way without much changes to observed Acavidae species compositions present and past.