scholarly journals Length-weight relationships of four different sea cucumber species in North-East coastal region of Sri Lanka

2018 ◽  
Vol 29 (2) ◽  
pp. 212 ◽  
Author(s):  
K. Veronika ◽  
U. Edrisinghe ◽  
K. Sivashanthini ◽  
A. R. S. B. Athauda
Keyword(s):  
Sri Lanka ◽  
Sea Cucumber ◽  
Coastal Region ◽  
North East

Sea cucumber fishing pattern and the socio-economic characteristics of fisher communities in Sri Lanka

2019 ◽  
Vol 32 ◽  
pp. 12 ◽  
Author(s):  
Ganeshan Nishanthan ◽  
Ajith Kumara ◽  
Pahan Prasada ◽  
Chamari Dissanayake
Keyword(s):  
Sri Lanka ◽  
Value Chain ◽  
Sea Cucumber ◽  
Dominant Role ◽  
Market Price ◽  
Northern Region ◽  
Breath Hold ◽  
North East ◽  
Scuba Divers ◽  
Management Measures

Sea cucumber fishing pattern and the social and economic characteristics of sea cucumber fisher communities in the north, north-west and north-east regions of Sri Lanka were assessed using the data collected from November 2015 to January 2017. A total of 9 sea cucumber species is landed in these areas using three fishing methods; diving (SCUBA and breath-hold), gleaning and surrounding nets. SCUBA diving is the dominant fishing method and SCUBA divers do both day and night fishing reporting the highest catch rates (CPUE ± SD in numbers/person/day) than the other fishers (p < 0.05; ANOVA). Gleaning is entirely carried out by fisherwomen in the northern region whereas 28 surrounding nets are used targeting low-value Stichopus naso. CPUE found to be varied with respect to species, region and fishing method (p < 0.05; ANOVA). Bohadschia vitiensis made the highest percentage contribution (61.3%) to the total sea cucumber landings during the study period. Among all fishers, SCUBA divers reported the highest average net monthly income. Men play a dominant role in sea cucumber fishing (98%), processing (99%) and marketing (100%). Fishermen in the age range of 25–67 yr, having only primary education mainly involved in the sea cucumber industry. The sea cucumber value chain consists of fishers (∼2000), middlemen (12), processors (16) and exporters (7). A significant increase in overall price development from fishers to the exporters was reported for all 9 species (p < 0.05; ANOVA). Fishers received a proportionally higher share of the end-market price mainly for low-value Bohadschia spp. Although fishers receive disproportionately low returns compared to other value chain players, 47.8% of fishers showed high satisfaction towards the prices they received from buyers. However, 83.6% of fishers are not satisfied with existing management measures. Apart from strengthening the existing management measures, this information is important to update the regional and global sea cucumber statistics.

scholarly journals Patterns, Trends and Drivers of Water Transparency in Sri Lanka Using Landsat 8 Observations and Google Earth Engine

2021 ◽  
Vol 13 (11) ◽  
pp. 2193
Author(s):  
Deepakrishna Somasundaram ◽  
Fangfang Zhang ◽  
Sisira Ediriweera ◽  
Shenglei Wang ◽  
Ziyao Yin ◽  
...  
Keyword(s):  
Sri Lanka ◽  
Human Activity ◽  
Google Earth ◽  
Water Transparency ◽  
Conservation Strategies ◽  
Landsat 8 ◽  
Essential Information ◽  
Annual Variations ◽  
North East ◽  
South West Monsoon

Addressing inland water transparency and driver effects to ensure the sustainability and provision of good quality water in Sri Lanka has been a timely prerequisite, especially under the Sustainable Development Goals 2030 agenda. Natural and anthropogenic changes lead to significant variations in water quality in the country. Therefore, an urgent need has emerged to understand the variability, spatiotemporal patterns, changing trends and impact of drivers on transparency, which are unclear to date. This study used all available Landsat 8 images from 2013 to 2020 and a quasi-analytical approach to assess the spatiotemporal Secchi disk depth (ZSD) variability of 550 reservoirs and its relationship with natural (precipitation, wind and temperature) and anthropogenic (human activity and population density) drivers. ZSD varied from 9.68 cm to 199.47 with an average of 64.71 cm and 93% of reservoirs had transparency below 100 cm. Overall, slightly increasing trends were shown in the annual mean ZSD. Notable intra-annual variations were also indicating the highest and lowest ZSD during the north-east monsoon and south-west monsoon, respectively. The highest ZSD was found in wet zone reservoirs, while dry zone showed the least. All of the drivers were significantly affecting the water transparency in the entire island. The combined impact of natural factors on ZSD changes was more significant (77.70%) than anthropogenic variables, whereas, specifically, human activity accounted for the highest variability across all climatic zones. The findings of this study provide the first comprehensive estimation of the ZSD of entire reservoirs and driver contribution and also provides essential information for future sustainable water management and conservation strategies.

Redescription of Pseudogilquinia pillersi (Southwell, 1929) (Cestoda, Trypanorhyncha) from serranid and lethrinid fishes from New Caledonia and Australia

2007 ◽  
Vol 52 (3) ◽  
Author(s):  
Ian Beveridge ◽  
Claude Chauvet ◽  
Jean-Lou Justine
Keyword(s):  
Sri Lanka ◽  
Host Range ◽  
East Coast ◽  
New Caledonia ◽  
Epinephelus Coioides ◽  
North East ◽  
The North ◽  
Specific Variation ◽  
Epinephelus Malabaricus

AbstractPseudogilquinia pillersi (Southwell, 1929), a poorly known species of trypanorhynch, is redescribed from plerocerci collected from Epinephelus coioides (Hamilton, 1922), Epinephelus malabaricus (Bloch et Schneider, 1801) (Serranidae) and Plectropomus laevis (Lacépède, 1801) (Serranidae) off New Caledonia. These were compared with specimens from Lethrinus atkinsoni Seale, 1910 and Lethrinus miniatus (Forster, 1801) (Lethrinidae) off the north-east coast of Australia as well as syntypes from Protonibea diacantha (Lacépède, 1802) from Sri Lanka. Although size differences were found in parts of the scolex as well as in the sizes of the tentacular hooks, the hook arrangements were identical in all specimens. The differences observed were attributed provisionally to intra-specific variation across a wide geographic and host range.

scholarly journals A Study of the Surface Air Temperature Variations in Nigeria

2017 ◽  
Vol 11 (1) ◽  
pp. 54-70 ◽  
Author(s):  
Najib Yusuf ◽  
Daniel Okoh ◽  
Ibrahim Musa ◽  
Samson Adedoja ◽  
Rabia Said
Keyword(s):  
Air Temperature ◽  
Cloud Cover ◽  
Coastal Region ◽  
Surface Air Temperature ◽  
The South ◽  
Climate Type ◽  
Temperature Variations ◽  
North Central ◽  
North East ◽  
The North

Background: Simultaneous measurements of air temperature were carried out using automatic weather stations at 14 tropical locations in Nigeria. Diurnal variations were derived from the 5-minute update cycle initial data for the years ranging between 2007 and 2013. The temperature trends in Nigeria revealed a continuous variability that is seasonally dependent within any particular year considered. Method: The analysis was carried out using available data from the network and the results are presented with a focus to characterize the temperature variations at different locations in the country using the mean, maximum and minimum temperatures from the north which is arid in nature to the south, which is a tropical monsoon climate type and a coastal region. Result: In overall, temperature variations in Nigeria were observed to have higher values in the far north, attributed to the influence of Sahara Desert, which has less cloud cover and therefore is more transparent to solar irradiance and lowers values in the south, where there are more cloud cover and abundant vegetation. Conclusion: Measured maximum and minimum temperatures in Nigeria are respectively 43.1°C at Yola (north-east part of Nigeria) and 10.2°C for Jos (north-central part of Nigeria). The least temperature variations were recorded for stations in the southern part of the country, while the largest variations were recorded in the north-central region of the country.

Elemental and Mineralogical Analysis of Beachrocks in Southern Coastal Region Sri Lanka

2019 ◽  
Author(s):  
Anjula Dassanayake ◽  
Chulatha Jayawardena ◽  
Indeewari Edirisooriya ◽  
Dharshana Thilakarathna ◽  
Vijitha Thirunavukarsu
Keyword(s):  
Sri Lanka ◽  
Coastal Region ◽  
Mineralogical Analysis

Predation of livestock by wild dogs in eastern New South Wales.

1989 ◽  
Vol 11 (2) ◽  
pp. 61 ◽  
Author(s):  
PJS Fleming ◽  
TJ Korn
Keyword(s):  
New South ◽  
New South Wales ◽  
Coastal Region ◽  
North East ◽  
The North ◽  
East Region ◽  
South Wales ◽  
Control Programmes ◽  
June July ◽  
Wild Dogs

A monthly survey involving officers from eastern New South Wales Pastures Protection Boards was conducted over four years from 1982 to 1985. Information was collected on the number and type of livestock attacked within each board district, sightings of wild dogs, the number of wild dogs kiied, the method by which they were kiied and the locations at which the observations occurred. A total of 25,644 livestock animals were reported killed or wounded from four regions; the North-East Coastal Region, the North-East Tablelands Region, the Central-East Region and South-East Region. Sheep were the most commonly attacked domestic animals followed by cattle and goats. Regional differences were apparent in the type of livestock killed and seasonal patterns of predation were evident. We recommend that annual control programmes be brought forward from June/July to late April in order to precede predation peaks.

scholarly journals Influence of Seaweed (Padina antrillarum) Extract Foliar Application on Growth and Flowering of Roses Variety ‘Local’

2021 ◽  
Vol 9 (4) ◽  
pp. 235-241
Author(s):  
M.A.M.N. Kularathne ◽  
S. Srikrishnah ◽  
S. Sutharsan
Keyword(s):  
Sri Lanka ◽  
Management Practices ◽  
Plant Biomass ◽  
Foliar Application ◽  
Coastal Region ◽  
Seaweed Extract ◽  
Control Treatment ◽  
Liquid Extract ◽  
Randomized Design ◽  
Wide Range

The Seaweed (Padina antrillarum) abundantly found in the coastal region of Eastern Sri Lanka. Seaweed contains a wide range of nutrients and hormones for plant growth. An experiment was conducted at the Crop Farm, Eastern University, Sri Lanka to assess the effects of seaweed (Padina antrillarum) extract on the flowering of roses var. ‘Local’ from July to September 2020. Four treatments were used in this experiment viz. 10% (T1), 20% (T2), and 30% (T3) seaweed extracts with control treatment (T4). Treatments were applied at once-a-week interval. The experimental design was a completely randomized design with three replications. All other management practices were followed uniformly. Measurements were done at once a month. Collected data were analyzed. The higher performances in measured parameters (plant height, leaf area, plant biomass, number of flowers per plant) were observed in T2. It showed that once a week application of 20% seaweed liquid extract had the potential to increase growth and flower production in roses. It might be due to the presence of nutrients and the growth hormones in seaweed extract and optimum concentration of seaweed extract received by plants at T2. In T1 and T3, plants received sub-optimum and higher concentration respectively. It could be the reason for the lowest performances in these treatments. From this experiment, it could be concluded that once a week application of 20% seaweed liquid extract of Padina antrillarum is suitable to increase flowering in roses of treatment tested.  

scholarly journals Socio-economic and Psychological Profile of Farmers Practicing Integrated Farming Systems (IFS) in Andhra Pradesh

2021 ◽  
pp. 305-316
Author(s):  
T. Sri Chandana ◽  
P. L. R. J. Praveena ◽  
T. Lakshmi ◽  
D. Subramanyam ◽  
B. Ravindra Reddy
Keyword(s):  
Nuclear Family ◽  
Coastal Region ◽  
Farming Systems ◽  
Farming System ◽  
Cropping Pattern ◽  
Psychological Profile ◽  
Indian Agriculture ◽  
North East ◽  
Integrated Farming ◽  
Mass Media Exposure

Agriculture is always been considered as the backbone of our country. In India, 70 per cent of the rural population is engaged in agriculture and 80 per cent of the population lives directly or indirectly on agriculture. There are 115 million operational holdings in the country and about 80 per cent are marginal and small farmers [1]. Indian agriculture has been taken the responsibility of providing food and employment to its millions of people. The present study described the socio-economic and psychological profile of Integrated Farming System practicing farmers in Chittoor from Rayalaseema region, East Godavari from North East Coastal region and Srikakulam from North Coastal region. The sample constituted to a total of 189 farmers. The farmers practicing Integrated Farming System were middle aged (52.38%), completed graduation (26.98%), were small land holders (43.39%) with high experience in IFS (55.56%), had nuclear family (88.89%) and with fair cropping pattern (69.31%). The major occupation of the IFS farmers was cultivation (51.85%) with medium family size (67.72%), annual income (49.21%), extension contact (43.39%), mass media exposure (43.92%), economic motivation (54.50%), decision making ability (46.03%), risk preference (53.44%), enterprise combination (100.00%) and members of at least one organization (65.08%).

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