scholarly journals The Significance of Habitat Characteristics to the Spatial Distribution of Local Avian Assemblage at Gannoruwa Mountain Forest Reserve, Kandy, Sri Lanka

2016 ◽  
Vol 2016 ◽  
pp. 1-6
Author(s):  
D. G. R. M. M. Kaushalya Rathnayake ◽  
I. Sandunika Ileperuma Arachchi ◽  
Buwaneka S. Pathirana ◽  
S. Wickramasinghe

Distribution patterns corresponding to habitat characteristics in tropical forests have not been largely studied. Natural forest structure as well as the anthropogenic alterations to the forests equally affects the distribution patterns of wet zone avifauna. The study reveals the importance of % canopy closure, distance from the forest edge, tree density, diversity, and elevation to the community composition of local forest birds inhabiting Gannoruwa Forest Reserve, Sri Lanka. The most important factors resulting in the study for shaping the avian distribution pattern are distance from the edge,elevation, and the % canopy closure. With the increase of favouring resources to the avian fauna at the edges and the juxtaposition of the edge, many forest loving species were observed to move towards the edge. The pattern is proven advantageous, but harmful in the long run. Thus, it is advisable that the conservation plans should focus on habitat destruction and the anthropogenic disturbance along forest edges.

2016 ◽  
Vol 8 (3) ◽  
pp. 1
Author(s):  
Abdul Rasheed Sithy Jesmy ◽  
Mohd Zaini Abd Karim ◽  
Shri Dewi Applanaidu

Conflicts in the form of civil war, ethnic tensions and political discord are of enduring concern and a major bottleneck to economic development in Sri Lanka. Three decades of civil war and unethical political culture have caused severe economic problems for the country, including slower rate of growth and a huge defence expenditure. The aim of this study is to examine the effect of military expenditure and conflict on per capita GDP growth rate in Sri Lanka from 1973 to 2014 using the Solow growth model and ARDL bounds test approach. The results of the bounds test are highly significant and lead to cointegration. The negative and significant coefficients of the error correction term illustrate the expected convergence process in the long-run dynamic of per capita GDP. The estimated empirical results show that, the coefficients of military expenditure and conflict are negative and statistically significant in the short-run as well as in the long-run in determining per capita GDP growth rate in Sri Lanka. Hence, it is critically important to take necessary action to decrease military expenditure and provide an efficient political solution to the problem of minorities, specifically in the post-war period.


2017 ◽  
Vol 94 ◽  
pp. 157-173 ◽  
Author(s):  
Leonardo Becchetti ◽  
Stefano Castriota ◽  
Pierluigi Conzo
Keyword(s):  
Long Run ◽  

2021 ◽  
Vol 9 ◽  
Author(s):  
Şerban Procheş ◽  
Syd Ramdhani ◽  
Alice C. Hughes ◽  
Lian Pin Koh

The plight of Southeast Asia’s animals, plants and ecosystems in the face of unsustainable exploitation and habitat destruction has been illustrated in several recent studies, despite often falling outside the global discourse on global conservation priorities. Here, we collate biogeographic and phylogenetic information to argue that this beleaguered region is one of world’s primary macrorefugia, and possibly its best chance of regaining its natural biodiversity distribution patterns after the current Anthropocene upheaval. The region uniquely combines top diversity values in (a) ancient lineage diversity and (b) cosmopolitan lineage diversity, suggesting that it has acted in the past as a biodiversity museum and source of global colonization. This is at least partly due to the interplay between latitudinal diversity gradients and continental connectivity patterns. However, the peak values in South China/North Indochina for cosmopolitan tetrapods and their sister lineages suggest that a key feature is also the availability of diverse climatic conditions. In particular, the north-south orientation of the mountain ranges here has allowed for rapid recolonization within the region following past climatic changes, resulting in high survival values and overall exceptional relict lineage diversity. From this starting point, global colonization occurred on multiple occasions. It is hoped that, with urgent action, the region can once again fulfill this function.


2019 ◽  
Vol 8 (2) ◽  
Author(s):  
A.M.S.K. Abeysekara ◽  
S.K. Yatigammana ◽  
K.T. Premakantha

Carbon dioxide has gained lot of attention in recent past as a greenhouse gas, and therefore it has a potential to affect the climate pattern of the world. Several anthropogenic activities are known to be responsible for the increased level of carbon in the atmosphere and disruption of the global carbon cycle. However, nature has its own mechanism of sequestering and storing the carbon in its “reservoirs”. Forest has the ability to sequester carbon in their biomass and reduce the rate of increase of atmospheric carbon dioxide. The carbon sequestered in the forest trees are mostly referred to as the biomass of a tree or a forest. It has been identified five carbon pools of the terrestrial ecosystem, involving biomass. The study was designed to estimate biomass stock and then the carbon stock of the Udawattakele Forest Reserve (7°17'58 "N, 80°38'20’’E) in Kandy, Sri Lanka. Allometric equations were used to calculate biomass of trees. The total biomass stock was estimated to be 9475.56 t ha-1 (Mega gram-Mg) and the total carbon stock was estimated to be 4,453.55 t ha-1 (Mg) in the Udawattakele Forest Reserve (UFR). This amount is equivalent to 16,344.52 Mg of carbon dioxide in the atmosphere. UFR holds a moderate amount of biomass/carbon stock and the total carbon density of natural forest and plantations was found to be 36.55 Mg ha-1 and 44.89 Mg ha-1 respectively.


2021 ◽  
Vol 28 (6) ◽  
pp. 348-354
Author(s):  
Min Seock Do ◽  
Ki-Baek Nam

Studies on the distribution of species are important to understanding the interspecific ecological niche and habitat selection through geographic environmental information. Particularly, vipers in the same genus have been an important topic because they show differences in the preferred geographical environment, depending on the distance of the phylogenetic relationship. This study investigated the geographical environment of red-tongued pit vipers (Gloydius ussuriensis) and Central Asian pit vipers (Gloydius intermedius) in the mountainous area, Cheonmasan Mountain County Park, South Korea, from April 2012 to October 2014, to understand the relationships among their habitat characteristics and ecological niche. Red-tongued pit vipers mainly lived in low altitude, wet valley areas with a low solar reflectance, while Central Asian pit vipers inhabited high altitude, dry land with large amounts of sunshine. As a result, our study supports that the ecological niche of red-tongued pit vipers and Central Asian pit vipers, inhibiting in Cheonmasan Mountain was overlapped low according to the majority of geographical environmental variables. The differentiated diet preference might be took into consideration as one of the potential key factors to the ecological niche differentiation among two species.


Author(s):  
Muhammad Arshad Kahn

This chapter examines the hypotheses that trade liberalization and financial liberalization jointly enhances economic growth in the four South Asian countries including Bangladesh, India, Pakistan and Sri Lanka for the period 1970-2007 using bounds testing approach to cointegration. The results suggest that in the long-run except for Bangladesh, financial development plays no role in promoting economic growth in these countries. Furthermore, the results suggest that trade openness plays a significant role in promoting economic growth in Bangladesh and India, while exerts negative effect on Pakistan and no effect on Sri Lanka. The share of domestic investment influences real output significantly in Bangladesh, India and Pakistan. In the long- as well as short-run two-way causality between real output, trade openness, share of investment and inflation rate exists for the case of Bangladesh and India. For the case of India two-way causality between finance and growth exists in the short-run. For the case of Pakistan, there is an evidence of long-run causality between real output, finance, trade openness, share of investment and inflation rate. However, in the short-run, two-way causality between real output, trade openness and share of investment is existed and one-way causality between inflation rate, trade openness and share of investment is also observed. No evidence of short-run causality between finance and growth and vice versa for Pakistan has been seen. Finally, for Sri Lanka, an evidence of long-run causality between real output, finance, trade openness and investment share has been found. In the short-run one-way causality between finance-growth, trade-finance, trade-growth and trade-investment has been obtained. These mixed results suggest that the authorities may focuses more and more on the trade liberalization. In addition, there is a need to further deepen the banking and stock markets and provide investment friendly environment to enhance domestic investment which, in turn, promotes economic growth.


2019 ◽  
Vol 12 (3) ◽  
pp. 265-287
Author(s):  
Shruti Shastri

Purpose The purpose of this study is to revisit the twin deficit hypothesis (TDH) and provide insights into the transmission mechanism connecting budget deficits and current account deficits for five major South Asian countries, namely, India, Bangladesh, Pakistan Sri Lanka and Nepal for the period 1985-2016. Design/methodology/approach This study uses a multivariate framework including real interest rate, real exchange rate and real gross domestic product to avoid the possibility of incorrect inferences caused by omission of relevant mediating variables. The long-run relationship and causality are investigated through the autoregressive distributed lag bounds testing approach and Toda Yamamoto approach, respectively, for each individual country. The robustness of the results is assessed with the help of Westerlund’s cointegration test and group mean fully modified ordinary least squares (GM-FMOLS), group mean dynamic ordinary least square (GM-DOLS) and common correlated effect mean group (CCEMG) estimators in the panel framework. Findings Both time series and panel evidences indicate long-run relationship between budget balance (BB) and current account balance (CAB) together with the mediating variables. The results indicate bi-directional causation between the two balances for India and Bangladesh, TDH for Pakistan and Sri Lanka and the reverse causation from CAB to BB for Nepal. Regarding the transmission mechanism, the results indicate the absence of the causal chain postulated by Mundell–Fleming, which predicts that BB causes CAB via interest rate and exchange rate. A CCEMG estimate of the import demand function reveals a positive government spending elasticity of imports suggesting that BB affects CAB by direct impact through demand. Originality/value This study augments the twin deficit literature on South Asian countries by providing insights into the transmission mechanism connecting the BB and CAB. Moreover, the study provides robust evidences on the TDH by using both time series and panel data techniques.


2019 ◽  
Vol 65 (2) ◽  
pp. 430-450
Author(s):  
T. Vinayagathasan ◽  
R. Ramesh

This study attempts to identify the impact of governance indicators on economic growth using time series data for Sri Lanka from 1996 to 2016 published by the World Bank. The Phillips–Perron (PP) unit root test confirmed that all the variables are integrated in order one and suggested the use of cointegration technique to identify the long-run relationship between the variables. All the lag length selection criteria except Schwarz Information Criterion (SIC) advocated the use of one lag as an optimal lag length for this study. Johansen cointegration method detected three cointegrating relationships among the variables. Further, this technique identified a significant and positive relationship between government effectiveness (GE) and gross domestic product per capita (GDPPC) in the long run. This result is in contrast to all the three traditional approaches, such as correlation test, scatter plot and ordinary least squared (OLS), in which they do not identify any clear relationship between them. Moreover, Johansen test found a negative and statistically significant link between political stability and absence of violence (PSAV) and GDPPC in the long run, while all three traditional approaches identified a positive correlation between them. The findings of this study indicate a negative association between rule of law (ROL) and GDPPC in the long run, which coincides with theory, some of the empirical studies and with findings of all three traditional approaches used in this study. Even though OLS did not identify a significant relationship between control of corruption (COC) and GDPPC, Johansen test, correlation test and scatter plot detected a significant and negative correlation between them in the long run as expected by the theoretical evidence. Granger’s causality test identified the bidirectional causality between GE and ROL and unidirectional causality between ROL and COC. However, relationship between governance variables and GDPPC vary based on the estimation methods. These findings suggest that the policymakers need to take considerable attention on the above when they formulate and implement policy to improve GE.


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