The quarterly volume and value of commercial fisheries production by species by province are the data generated by the survey. The Fisheries Statistics Division of the Philippine Statistics Authority (PSA) maintained the quarterly data series since 2002. Prior to 2002, only annual commercial fisheries data were available by province by region and by species. These data were published in yearly publication of Fisheries Statistics of the Philippines.
Data collection for fisheries was originally under the Bureau of Fisheries and Aquatic Resources (BFAR) until the creation of the BAS in 1987. Pilot survey of commercial fisheries was conducted in 1976. Sampling over space and time was done. Monthly survey was conducted in sample landing centers in selected days of the month in every coastal province in the Philippines. Contractual Data Collectors (CDCs) were hired to observe actual unloadings of fish in sample fish landing centers. Annual commercial fisheries data were available by region and by province. Catch by species, by fishing ground and by fishing gear were also generated from the survey. These data were published annually in Fisheries Statistics of the Philipines until 1987.
When the mandate of collecting fisheries statistics was transferred from BFAR to BAS (now PSA), actual field data collection was temporarily suspended for administrative reasons. Alternative methods of estimation were used to produce fisheries statistics in the absence of surveys. Estimation of fish production was done at national level with some indicators coming from Operations Centers. Regional and provincial outputs were distributed with 1985 as the baseline data.
Improvements of survey design were developed through the years, until the quarterly survey of landing centers was adopted in 2002. Due to budgetary constraints, this quarterly survey of commerciall fish landing centers was deemed to be the most appropriate design to get the desired information on volume and value of fish production. Since then, the BAS, and subsequently PSA, started to generate fish production by quarter, by province and by region.
Commercial fisheries is one of the three (3) sectors of fisheries, the others being Municipal fisheries and Aquaculture. The Quarterly Commercial Fisheries Survey is a survey on volume and price of fish unloaded at sample commercial fish landing centers by fishing boats with gross tonnage of more than three (3) tons.
Data on commercial fisheries are collected in fish landing centers where fishermen unload and trade their catch. There are different types of fish landing centers, namely: the traditional, private landing centers and those managed by Philippine Fish Development Authority (PFDA) and Local Government Units (LGUs).
For the traditonal landing center, data are collected through personal interview of at least five (5) key informants knowledgeable on the fishing activites at the sample fish landing center. Key informants may be a fisherman, fishing boat operator, fish trader, fish broker, or barangay officials. Monthly volume and price of fish unloaded at the landing centers are gathered on the last week of the last month of the reference quarter. Statistical Researchers (SRs) are hired to conduct the actual interview of fishermen unloading at the sample landing centers.
Admistrative data from LGUs, privately-managed, and PFDA landing centers are collected by regular staff or SRs during the reference quarter.
The general objective of the survey is to generate information on the quarterly volume and value of fish unloading by species at the provincial, regional and national levels.
Kind of Data
Sample survey data [ssd]
Unit of Analysis
The scope of the Quarterly Commercial Fisheries Survey in traditional fish landing centers include:
1. Quarter and Year (Reference quarter for the current year)
2. General information (Region and province)
3. Landing Center (Complete name and stratum or classification of the sample fish landing center)
4. Respondent information
5. Unloaded species (Monthly volume of fish unloaded by species during the reference quarter)
6. Price (Monthly price per kilogram of species unloaded in the landing center during the reference quarter)
7. Reasons for change in volume of unloading species
Agriculture, forestry, fisheries
All commercial fish landing centers nationwide
Producers and sponsors
Philippines Statistics Authority
National Economic and Development Authority
Government of the Philippines
The list of all commercial fish landing centers in the country serves as the sampling frame for the Quarterly Commercial Fisheries Survey (QCFS) of traditional fish landing centers. Stratified sampling by province was employed with volume of unloading per day as stratification variable. The landing center served as the primary sampling unit. The landing centers were grouped into the following strata:
Stratum 1 - consists of the top producing fish landing centers
Stratum 2 - consists of the major producing fish landing centers
Stratum 3 - consists of all other landing centers
Simple random sampling was used in drawing the sample landing centers from the stratum. Replacement of sample landing center was allowed for landing centers with unstable peace and order situation and for hard or difficult to reach areas. A total of 188 sample landing centers were covered distributed in 58 provinces.
All private, PFDA-managed fish ports and LGU-managed landing centers were completely covered (complete enumeration).
Response rate for quarterly commercial fisheries survey is 100%.
A factor derived from the number of total fish landing centers over the sample fish landing centers by stratum is used to estimate the total volume of fish landed by commercial fishing boats in the province. This factor varies from one province to another.
Dates of Data Collection
Data Collection Mode
Face-to-face paper [f2f]
Chief, Knowledge Management and Communication Division
The PSA and its field personnel shall hold all data supplied by the establishments/households/individuals in confidence. The information obtained from each respondent of the census/survey or individual/establishment in administrative records shall be for statistical purposes only and not for taxation, regulation nor investigation purposes. The data shall be processed with others of the same category and shall be disseminated in summary forms or statistical tables so as not to reveal the identity of any respondent.
Confidentiality of primary data collected from respondents/administrative records systems is guaranteed by Section 26 of the Republic Act No. 10625 (Philippine Statistics Act of 2013). Penalties shall be enforced to acts of breach of confidential information pursuant to Section 27 of the said Act.
Authorization to use this data is granted only to the client or data user and persons within its organization, if applicable. Under no circumstances shall the client reproduce, distribute, sell or lend the entire data or parts thereof to any other data user apart from himself or that of authorized employees in his organization. The PSA shall hold the data user fully responsible for safeguarding the data from any unauthorized access or use.
Before being granted access to the dataset, all users have to formally agree:
1. To make no copies of any files or portions of files to which s/he is granted access except those authorized by the PSA.
2. Not to use any technique in an attempt to learn the identity of any person, establishment, or sampling unit not identified in the dataset.
3. To hold in strictest confidence the identification of any establishment or individual that may be inadvertently revealed in any documents or discussion, or analysis. Such inadvertent identification revealed in her/his analysis will be immediately be reported to the PSA.
Disclaimer and copyrights
The data users/researchers acknowledge that the PSA bears no liabilities and responsibilities for any particular, indirect, or consequential damages or any damages, whatsoever resulting from loss of use, or of data in connection with the use or for interpretations or inferences based upon such uses.