scholarly journals THE IMPACT OF OCEANOGRAPHIC PARAMETERS CHANGES ON THE DISTRIBUTION AND ABUNDANCE OF SKIPJACK TUNA Katsuwonus pelamis IN MAKASSAR STRAIT

2019 ◽  
Vol 11 (1) ◽  
pp. 171-180 ◽  
Author(s):  
Zabhika Dinda Istnaeni ◽  
Mukti Zainuddin
Keyword(s):  
Generalized Additive Models ◽  
Secondary Data ◽  
Additive Models ◽  
Primary Data ◽  
Survey Method ◽  
Skipjack Tuna ◽  
Catch Per Unit Effort ◽  
Chl A ◽  
Level 3 ◽  
The Impact

This study aimed to identify the changes of oceanographic parameters and to analyze the effects of the parameter changes on the distribution and abundance of skipjack tuna captured by purse seine fishing gear operated in Coastal Waters of Makassar Strait. This study collected fishing and field oceanographic data from May to October 2017. A survey method was used to obtain primary data (skipjack catch per unit effort/CPUE) and secondary data including sea surface temperature (SST) and Chl-a level 3 with a monthly temporal and spatial resolution of 4 km from 2007-2017, interview, and study literature. The data were processed by using SeaDAS and ArcGIS software packages and were analyzed by anomalies, standard deviation, and Generalized Additive Models (GAMs) analyses. The results showed there were anomalies for both SST and Chl-a near study area reflecting the significant changes in the oceanographic conditions. The changes for both SST and Chl-a were 1.5ºC and -0.97 mg.m-3 respectively. This study suggests that the Chl-a parameter has more significant effects on skipjack tuna distribution and CPUE than SST. Understanding of the areas of the oceanographic changes strongly supports the available habitat for the fishing operation and conservation

scholarly journals Cod pots in a Baltic fishery: are they efficient and what affects their efficiency?

2015 ◽  
Vol 72 (5) ◽  
pp. 1545-1554 ◽  
Author(s):  
Sara J. Königson ◽  
Ronny E. Fredriksson ◽  
Sven-Gunnar Lunneryd ◽  
Patrick Strömberg ◽  
Ulf M. Bergström
Keyword(s):  
Water Depth ◽  
Generalized Additive Models ◽  
Additive Models ◽  
Water Current ◽  
Catch Per Unit Effort ◽  
Seal Population ◽  
Time Of Year ◽  
The Baltic ◽  
Longline Fisheries ◽  
The Impact

Abstract With the growing grey seal population in the Baltic Sea, the inshore cod fishery has suffered dramatic increases in both catch losses and damage to fishing gear. To mitigate this situation, cod pots were evaluated as an alternative to traditional gillnets and longlines. During a 3-year study, cod pots were used by commercial fishers in two areas off the coast of Sweden. Using the data from this study, we evaluated catches from pots in relation to other gear types and investigated the effects of environmental and fisheries-related variables such as depth and soak time. The comparison of pots with other gear types showed that, during the first half of the year, the pot fishery generated lower daily catches than the gillnet and longline fisheries at comparable fishing efforts. During the second half of the year, catches in the pot fishery exceeded or were equal to those in the traditional fisheries. Using generalized additive models to evaluate the impact of environmental and fisheries-related variables on pot catches, we showed that, in both areas, the catch per unit effort (cpue) of legal-sized cod was affected by the water depth, the time of year (months), and the soak time. In one of the areas, cpue was also affected by the direction of the water current in relation to the orientation of the string of pots. The cpue of undersized cod was affected by topographic variables such as the slope and the complexity of the bottom, in addition to the water depth, month of the year, and soak time. The results from the study indicate that pots can be a useful alternative gear in the Baltic cod fishery, at least during part of the year. By using our information on how catches are affected by environmental and fisheries-related variables, the pot fishery may be further optimized to increase catches.

scholarly journals The impact of Covid-19 pandemic on people’s behavior and herbal drink (jamu) processing businesses in Banjarbaru, South Kalimantan

2021 ◽  
Vol 306 ◽  
pp. 02046
Author(s):  
Susi Lesmayati ◽  
Retna Qomariah ◽  
Awanis ◽  
Lelya Pramudyani
Keyword(s):  
Herbal Medicine ◽  
Positive Impact ◽  
Secondary Data ◽  
Primary Data ◽  
Survey Method ◽  
Volume Production ◽  
The Impact

This study aimed to determine and analyze the impact of the Covid-19 pandemic on (1) people's behavior to avoid exposure to the virus with consumed traditional herbal drink (jamu), and (2) jamu processing businesses in Banjarbaru City, South Kalimantan. The research location was determined purposively in the centre of traditional herbal drink processing known as Kampung Pejabat, Loktabat Selatan Village, South Banjarbaru District Banjarbaru City. The research was carried out from February to March 2021 and was conducted using a survey method to obtain primary data and supported by secondary data from reports and other sources. The data were analyzed descriptively. The studies showed that (1) Preventive efforts avoid the virus done by the peoples at the beginning of the pandemic until now by consuming jamu. Around 82 – 88% of people consuming jamu that they bought or made themselves, and they also consuming others in smaller amounts. The peoples already know the benefits of jamu as herbal medicine because it is a hereditary knowledge. Besides, consuming jamu gendong does not require a high cost. (2) there was an increase in volume production of jamu gendong around 100% at the beginning of the pandemic compared with production before the pandemic. The R/C ratio of jamu processing is increased from 1,3 to 1,54 it means the pandemic had a positive impact on the jamu processing business.

scholarly journals The impact of education and experience on profit of smallholder dairy farming at Batu City of Malang Raya, Indonesia

2022 ◽  
Vol 335 ◽  
pp. 00051
Author(s):  
Hari Dwi Utami ◽  
MB Hariyono ◽  
Umi Wisaptiningsih ◽  
Hary Nugroho ◽  
Nur Cholis
Keyword(s):  
Secondary Data ◽  
Dairy Farming ◽  
School Education ◽  
Primary Data ◽  
Survey Method ◽  
Multiple Regression Technique ◽  
Smallholder Dairy ◽  
Smallholder Dairy Farming ◽  
Multistage Sampling ◽  
The Impact

The research was conducted at Batu, City, Malang Raya of Indonesia. Study addressed to examine the farmer characteristics, dairy farming income, and the factors influencing on profit. The case study applied multistage sampling method to select 34 representative farmers which divided into three strata namely, stratum-1 (rearing <4 Animal Units), stratum-2 (owning 4-8 AU), and stratum-3 (controlling >8 AU). Primary data collection used survey method with structured questionnaire, whereas secondary data were available in related institutions and sources. Data analysis implemented descriptive and multiple regression technique. Results confirmed that farmers has experienced about 6-10 years in raising dairy farming and they has secondary school education. The profitable dairy farming was smallholder dairy farming that rearing more than 8 AU with daily income per Animal Unit of IDR 64,554 and structured with IDR 11,131 of revenue and IDR 47,577 of production cost. Farmer’s experience was positively explaining the smallholder dairy profit, and the high school education attainment was more likely to increase venture’s income. The farm return has positive and strong relationships with the more number of dairy cattle owned.

scholarly journals STUDY OF ENVIRONMENTAL IMPACT ON SCHOOL BUILDING CONSTRUCTION (CASE STUDY: SDN HARJAMUKTI 5, DEPOK CITY)

ASTONJADRO ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 80
Author(s):  
Alimudin Alimudin
Keyword(s):  
Environmental Impact ◽  
Environmental Impacts ◽  
Secondary Data ◽  
Green Building ◽  
Ambient Air ◽  
Quality Data ◽  
Primary Data ◽  
Survey Method ◽  
Water Quality Data ◽  
The Impact

<p class="ListParagraph1">Improvement of education building facilities and infrastructure is needed to improve services to the community. In line with the green building planning, Housing and Settlements Department, Depok City plans to build SDN Harjamukti 5 Public with due regard to environmentally friendly development. The activity is predicted to cause environmental impacts, so a study of environmental impact analysis is needed. The purpose of this study is to determine the baseline condition of the study site and analyze the environmental impacts and obtain ways to overcome the results of the analysis in an effort to minimize the impact that will then be used as a reference in order to properly protect the environment. The method used is survey method. This research uses primary data and secondary data. Primary data include water quality data, ambient air quality and noise data, and flora and fauna data while secondary data include climate data and socio-economic data. The results of the study obtained an analysis of environmental impacts that occur and how to minimize impacts with good handling in order to create a construction that is green building concept.</p>

scholarly journals PROFIL USAHA PERIKANAN PANCING FUNAE DI KELURAHAN BUNAKEN KOTA MANADO PROVINSI SULAWESI UTARA

2014 ◽  
Vol 2 (3) ◽  
Author(s):  
Christian Karimba ◽  
Christian R. Dien ◽  
Otniel Pontoh
Keyword(s):  
Financial Analysis ◽  
Secondary Data ◽  
Financial Capital ◽  
Primary Data ◽  
Survey Method ◽  
Small Scale ◽  
Fishing Gear ◽  
Skipjack Tuna ◽  
Income Share ◽  
Operation Process

Abstract Funae fishery using fishing technology modified from skipjack pole-line fishery. However, the target of fishing remains similar i.e. Skipjack Tuna. The modification purpose is to reduce cost according to the financial capital owned by the local small-scale fisherman. How far this modification was done by the fisherman is the question which needs answer through this study. The study performed at Bunaken fishing base aimed at to learn and describe profile of funae fishery in term of boat performance, fishing gear, fishing operation process, income share system and financial analysis. Study performed based on survey method was primary data collected using interview with boat owners and his crews. While secondary data gathered from related institutions. The result of study indicated that the funae fishery is typical of small-scale fishery in term of smaller boat performance compared those of pole-line fishery, small size of gear, daily operation process mixed income share system and financially profitable fishery. Keywords: Profile, Business, Funae, Fishery Abstrak Usaha perikanan funae merupakan hasil modifikasi dari alat tangkap usaha perikanan Huhate. Walau demikian, target operasi penangkapan tetap sama yaitu ikan Cakalang dan Tuna. Tujuan modifikasi adalah penghematan biaya sesuai dengan kemampuan modal yang dimiliki oleh nelayan lokal. Sampai berapa jauh modifikasi itu dilakukan oleh nelayan merupakan pertanyaan yang membutuhkan jawaban melalui penelitian ini. Penelitian telah dilaksanakan di pangkalan perikanan desa Bunaken bertolak dari tujuan untuk mempelajari dan mengkaji proil perikanan funae melalui telaah beberapa variabel seperti penampilan perahu dan alat tangkap, proses operasi penangkapan, sistem bagi hasil, dan analisis keuangan. Penelitian dilaksanakan dengan menggunakan metode survei dimana data primer dikumpulkan langsung dari pemilik dan awak perahu. Sedangkan data sekunder diambil dari berbagai instansi terkait. Hasil penelitian menunjukkan bahwa perikanan funae adalah khas usaha perikanan skala kecil. Hal ini nampak dari penampilan perahu dan alat tangkap yang lebih kecil dibandingkan dengan usaha perikanan Huhate. Di samping alat tangkap kecil juga proses penangkapan harian, sistem bagi hasil campuran dan secara finansial memberi laba. Kata Kunci : Profil, Usaha Perikanan, Pancing, Funae

scholarly journals DAMPAK PENGEMBANGAN PROGRAM EKOWISATA BERBASIS SATWA ENDEMIK DI TANGKOKO BITUNG

ZOOTEC ◽  
2017 ◽  
Vol 37 (2) ◽  
pp. 448
Author(s):  
Fergina Baware ◽  
H.J. Kiroh ◽  
R.H. Wungow ◽  
M. Kawatu
Keyword(s):  
Program Development ◽  
Nature Reserve ◽  
Positive Impact ◽  
Secondary Data ◽  
Tourism Industry ◽  
Primary Data ◽  
Survey Method ◽  
Income Source ◽  
Sulawesi Macaque ◽  
The Impact

THE IMPACT OF ENDEMIC ECOTOURISM PROGRAM DEVELOPMENT BASED ON  TANGKOKO  NATURE RESERVE OF BITUNG. Tangkoko National Reserve is one of the nature reserves located in Bitung regency of North Sulawesi. The reserve covers an area of 8,745 hectares. There is abundant biodiversity such as various types of protected flora and fauna can be found in the reserve. Among them there are endemic wildlifes such as Sulawesi Macaque (Macaca nigra), Tarsiers (Tarsius spectrum), the Sulawesi bear cuscus (Ailurops ursinus), and Hornbill (Rhyticeros cassidix). Here is where the tourists can enjoy the beauty of the reserve or seen firsthand the wealthy of nature in such a protected forest, where the forest has potential as anecotourism spot. Tourism industry has an important role in the development efforts and the development of the region where the tourism spot located.Even in some areas show that tourism industry is able to develop the region as well as create a main income source. The present study was conducted to elaborate the impacts of endemic ecotourism program development basedon the development of Tangkoko nature reserve of Bitung. The study was conducted from November 2016 to January 2017. The ellaboration of the study was focused on the impact of ecotourism developmentonthe existing endemic Sulawesi Black Monkeys and Tarsiers. Survey method was employed to collect and analyze various data and information on endemic fauna of Sulawesi Black Monkeys and Tarsiers. The primary data was obtained through direct interviews with various communities around nature reserve area, and secondary data was obtained from related government sources in Bitung regency.Variables observed were:1) vegetation, 2) the existing wildlife conditions, 3) community income, and 4) the income of the region of Bitung regency.Based on results and discussion, it can be concluded that ecotourism is the best program to be implemented as it could give positive impact towards conservation efforts,increase community's income, and regional income.Keywords: Tangkoko reserve, Ecotourism, Endemic Fauna.

scholarly journals Pengaruh Program "Yuk Nabung Saham" Terhadap Minat Investasi Pada Kelompok UKM di Kota Prabumulih Sumatera Selatan

2020 ◽  
Vol 4 (1) ◽  
pp. 364-370
Author(s):  
Zakaria Harahap
Keyword(s):  
Correlation Coefficient ◽  
Secondary Data ◽  
Primary Data ◽  
Coefficient Of Determination ◽  
Survey Method ◽  
Simple Linear Regression ◽  
Purposive Sampling ◽  
Independent Variables ◽  
The Impact ◽  
Selection Of

Let's Save Stocks Against Investment Interest in SMEs Group in Prabumulih City, South Sumatra. The purpose of this study is to analyze the impact of the "Yuk Nabung Saham" program on investment interest in the SME group in Prabumulih City, South Sumatra. The research method used in this study using a survey method. By collecting primary data and secondary data. The selection of the research location was determined deliberately (purposive sampling) then the data obtained would be analyzed using the T test with simple linear regression. The population selection in this study was the UKM group in Prabumulih as many as 5,436 UKM, the method of determining the sample used was purposive sampling with the consideration of respondents who were influencers / deciders, with sampling using the Slovin Umar formula (2013), so the sample to be used in this study is as many as 98 respondents representing a randomly selected population. The results show that the value of the correlation coefficient and the coefficient of determination can be used to determine the proportion of the independent variables (X) in explaining the Y variable.The correlation coefficient of 0.827 indicates that there is a strong and unidirectional influence between saving stocks and investment interest in the Prabumulih City UKM group. . The coefficient of determination is 0.827 or 82.7%, the variation of saving stocks, which can explain the investment interest variable, while the remaining 13.7% is explained by other variables not examined in this study. Keywords: Saving Stocks and Investment Interest

scholarly journals Information Communication Technology (ICT) usage in the South African Construction Professional Practice: Lessons Learnt

2013 ◽  
Vol 5 (10) ◽  
pp. 652-659
Author(s):  
Aigbavboa C.O. ◽  
Lesito K.P. .
Keyword(s):  
Construction Industry ◽  
South African ◽  
Professional Practice ◽  
Secondary Data ◽  
Document Management ◽  
Primary Data ◽  
Survey Method ◽  
Valuable Insight ◽  
The South ◽  
The Impact

This paper examines the impact of ICT in professional practice in the South African construction industry. This is with the view that ICT utilization in professional practice has the potential to facilitate better decision-making ability and savings in operating costs, amongst others. The data for the study was derived from both primary and secondary sources. The primary data was obtained through the survey method, while the secondary data was obtained from the review of literature. The primary data for the study was collected through a structured questionnaire survey distributed to a sample of 37 professionals in the construction industry. The results revealed that architectural, engineering and quantity surveying functions have been largely computerised. However, data and document management is still done through the traditional way of manual filing. Therefore, because construction industry professionals are a rich source of information about ICT and its improvement within the industry, the study provide valuable insight into the current usage of ICT in construction professional practise firms, which thus reveals the level of ICT adaptation in South African CI. Hence, this thus shows that ICT surveys can be used to determine the number of users of these systems, identify the core impacts ICT has had on day to day activities.

scholarly journals Prediction of Potential Fishing Zones for Skipjack Tuna During the Northwest Monsoon Using Remotely Sensed Satellite Data

2017 ◽  
Vol 22 (2) ◽  
pp. 59-66
Author(s):  
Mukti Zainuddin ◽  
Safruddin Safruddin ◽  
Muhammad Banda Selamat ◽  
Aisjah Farhum ◽  
Sarip Hidayat
Keyword(s):  
Chlorophyll A ◽  
Generalized Additive Models ◽  
Additive Models ◽  
Skipjack Tuna ◽  
Catch Per Unit Effort ◽  
Catch Data ◽  
Mean Sea Surface ◽  
Fishery Data ◽  
And Migration ◽  
The Relationship

One of economically important fish in the Bay of Bone is Skipjack tuna which their distribution and migration are influenced by surrounding environment.  This study aims to investigate the relationship between skipjack tuna and their environments, and to predict potential fishing zones (PFZs) for the fish in the Bone Bay-Flores Sea using satellite-based oceanography and catch data. Generalized additive models (GAMs) were used to assess the relationship. A generalized linear model(GLM) constructed from GAMs was used for prediction. Monthly mean sea surface temperature (SST) and chlorophyll-a during the northwest monsoon (December-January) together with catch data were used for the year 2012-2013. We used the GAMs to assess the effect of the environment variables on skipjack tuna CPUE (catch per unit effort). The best GLM was selected to predict skipjack tuna abundance.  Results indicated that the highest CPUEs (fish/trip) occurred in areas where SST and chlorophyll-a ranged from 29.5°-31.5°C and 0.15 - 0.25 mg m-3, respectively. The PFZs for skipjack were closely related to the spatial distribution of the optimum oceanographic conditions and these mainly developed in three locations, northern area of Bone Bay in December, in the middle area of the bay (4°-5.5°S and 120.5°-121.5°E) during January and moved to the Flores Sea in February. The movement of skipjack concentration was consistent with the fishery data.  This suggests that the dynamics of the optimum oceanographic signatures provided a good indicator for predicting feeding grounds as hotspot areas for skipjack tuna in Bone Bay-Flores Sea during northwest monsoon. Keywords:  skipjack tuna, potential fishing zones, satellite based-oceanographic data, Northwest monsoon

STABILITAS HARGA IKAN DI KOTA AMBON MELALUI PERAN COLD STORAGE, OPTIMASI PRODUKSI DAN EFISIENSI TEKNIS

2018 ◽  
Vol 2 (2) ◽  
pp. 74-84
Author(s):  
Stevanus Marelly Siahainenia ◽  
Dionisius Bawole ◽  
Eygner Gerald Talakua
Keyword(s):  
Cold Storage ◽  
Secondary Data ◽  
Raw Material ◽  
Primary Data ◽  
Survey Method ◽  
Production Factors ◽  
Flying Fish ◽  
Qualitative Descriptive ◽  
Installed Capacity ◽  
Space Capacity

The purpose of this study was to find out the function of cold storage in stabilizing fish prices in Ambon City, analyzing optimal production levels of various types of dominant fish, and analyzing the level of efficiency of utilization of cold storage and auxiliary machinery. This study uses the survey method. Primary data collection through questionnaires is built empirically while secondary data is obtained from several agencies related to this study. The research sample was drawn by exhausting sampling, amounting to 6 cold storage units in Ambon City. The role of cold storage to stabilize fish prices was analyzed using a qualitative descriptive approach, while the quantitative techniques used included analysis of optimization of cold storage production with linear programming and analysis of the efficiency of utilization of cold storage. The results of the study show that cold storage has not played a role properly to stabilize fish prices in Ambon City. To achieve optimal use of production factors, the cold storage management needs to reduce the raw material by 24,915.9 kg / month; 7 HOK / month workforce; cold storage storage space capacity of 2.09 kg / month; and demand for flying fish 1,402.6 kg / month, while the use of production factors efficiently (fully utulized) is the capacity of the freezing machine, demand for tuna, skipjack, and cob. The level of technical efficiency of the utilization of cold storage facilities is reached, the total use of installed capacity must be proportional to the capacity used.

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