The Environment Agency undertakes fisheries monitoring work on rivers, lakes and transitional and coastal waters (TraC).

This dataset contains site and survey information, the numbers and species of fish caught, fish lengths, weights and ages (where available), for all the freshwater fish surveys carried out across England from 1975 onwards.

Notes: - These survey data are stored in an archive more commonly known as the NFPD (National Fish Populations Database). - This dataset contains Freshwater fish surveys only. - Third party data held on the NFPD are excluded from the dataset. - Some historic surveys (particularly in Anglian Central) have incorrect survey lengths and survey widths. These can be identified by a survey length of 1 and a survey width that is equal to the area. The survey areas are correct. This is due to the migration of old historic data from previous databases into the NFPD. - Approved for Access under AfA347.

Please see the Dataset Documentation for further detail.

Accurate and precise stock assessments are predicated on accurate and precise estimates of life history parameters, abundance, and catch across the range of the stock. In its continued efforts to improve the data used in stock assessments, the NOAA Pacific islands Fisheries Science Center (PIFSC) implemented a Bottomfish Fishery-Independent Survey in Hawaii (BFISH) in 2016. The BFISH survey utilizes two gear types, Cooperative Research hook-and-line fishing operations (CRF) and the Modular Optical Underwater Survey System (MOUSS). Survey sampling is conducted annually, typically in the fall, surrounding the Main Hawaiian Islands (MHI), in accordance with a stratified-random sampling design. Under this design, the waters surrounding the MHI are gridded at 500 meter resolution. Each grid is given attributes of depth, slope, and seafloor hardness. Depth categories are Shallow (75-200 meters), Medium (200-300 meters) and Deep (300-400 meters). Slope categories are Low slope (0-10 degrees) and High (10-90 degrees). Seafloor categories are Hardbottom and Softbottom. Annual survey data are processed to produce relative and absolute abundance and biomass estimates for the Stock Assessment for the Main Hawaiian Islands Deep 7 Bottomfish Complex. CRF Activities have been conducted under contract with the Pacific Islands Fisheries Group (PIFG). Fishing methods are standardized among vessels. Each vessel conducts fishing operations with assigned grid cells for 30 minutes per cell. Each vessel deploys two fishing lines. Each line contains four standard size hooks. Half of the hooks are baited with squid, half with fish. Caught individuals are recorded to the lowest possible taxon on standardized paper datasheets. Each individual is measured (fork-length) in centimeters. Deep7 species are retained by PIFSC for biological analysis.

These data include goals, objectives, and performance measures from management plans and monitoring surveys related to fisheries management in the St. Clair-Detroit River System and the Western Basin of Lake Erie. Researchers extracted these data from existing management plans identified from on-line grey literature searches and discussions with collaborators and regional fisheries management personnel

The Southeast Fisheries Science Center Mississippi Laboratories conducts standardized fisheries independent resource surveys in the Gulf of Mexico, South Atlantic, and U.S. Caribbean to provide abundance and distribution information to support regional and international stock assessments. A standardized reef fish survey is conducted in the U.S. Caribbean every 2nd or 3rd year with the objective of determining the relative abundance of reef fish on the shelf waters of Puerto Rico and the U.S. Virgin Islands. This survey uses video cameras, fish traps and vertical line gear, with approximately 200 video cameras, 200 vertical line and 100 traps conducted. The camera array consists of four housings positioned orthogonally and center mounted at a height of 51 cm above the bottom of the array. Each housing contains a pair of black-and-white Videre stereo cameras along with a color mpeg camera. Sampling of reef sites with video cameras occurs only during daylight hours, with the first gear deployment one hour after sunrise and the last gear retrieval one hour prior to sunset. Video arrays are soaked for 35 minutes. At sites selected for fish sampling, a chevron (or arrow) fish trap or vertical line is used to capture fish for biological samples. The chevron fish trap is constructed with 1.5-inch vinyl-clad mesh. In its greatest dimensions, the trap is 1.76 m in length, 1.52 m in width and 0.61 m in depth. A 0.4 m by 0.29 m blow out panel is placed on one side and kept closed using 7-day magnesium releases. The fish trap soaks for one hour and is baited with squid. The vertical line consists of a mainline with 10 gangions attached that is either deployed or attached to the vessel. One 8/0, 11/0 or 15/0 circle hook is attached to each gangion and baited with mackerel (Scomber scombrus). The mainline is soaked for five minutes. Most of the animals captured are measured, weighed, tagged and then released. Those individuals which are moribund or have expired are retained to collect biological data pertaining to the life history of these fishes. Habitat mapping is conducted using the SIMRAD ME70 multibeam echosounder. At each site hydrological data is collected using Conductivity Temperature Depth sensor (CTD).

In the spring of 2003, California Department of Fish and Game (CDFG) personnel began quarterly sampling of Salton Sea fish at fourteen stations around the sea, as the basis of a long term monitoring program. To allow comparison of current and future monitoring efforts by CDFG to past results, the protocol was adapted from those previously used by researchers at the Salton Sea. Each quarter, if conditions allow, this protocol will produce about 816 net-hours of sampling. To date data collection was started in the spring of 2003, continuing quarterly. Data collection is ongoing as of 2008. Two seasons were missed due to unavailability of launch sites: Fall 2007 and Winter 2007. *Note: This dataset should be viewed with the Quarterly Water Quality Surveys - Salton Sea [ds429] dataset. Methods: The 11 sampling sites comprise three broad habitat types: pelagic (3 sites), near-shore (8 sites), and estuarine (3 sites). The pelagic sites are in the approximate middles of the north basin, south basin and inter-basin areas of the Sea. The near-shore sites are spaced widely apart, four each, near the west and east shores, to capture as much breadth of habitat as possible. The estuarine sites are in the body of the Sea, close enough to the mouths of the New, Alamo, and Whitewater Rivers, to be under the influence of their outflows. Sampling takes place during each of the putative seasons, as follows: spring- April and May; summer- July and August; fall- October and November; winter- January and February. We attempt to compress the total sampling period into as few days as possible, to the extent that the weather, equipment maintenance, and personnel scheduling constraints allow. Nets are typically set at one or two sites in the morning, and hauled in after approximately 24 hours. The exact number of hours set is recorded for each net, to the nearest quarter-hour. Fish are sampled by deploying multi-panel monofilament gill nets with 6 X 30 foot panels of 0.5, 1, 2, 3, and 4 inch mesh. Two nets are set at all sites at the waters surface. The nets are set far enough apart to allow room for maneuvering a boat during setting and retrieval, usually 100-200 meters. The nets at near-shore and estuarine sites are set in 2.5 to 4.5 meters of water, typically 200-300 meters from the shore. Two additional nets are set at the bottom of water column at the three pelagic sites. The conditions fish experience at the bottom in deep water is different enough from the surface water, in dissolved oxygen, light, food availability and temperature, that this can be considered a discrete habitat, and thus we sample it as though it were a separate site. At the time of each set and retrieval, water depth, water temperature, conductivity, salinity, and dissolved oxygen are measured and recorded. When nets are pulled in the following day, all fish are removed and immediately stored on ice. Data are collected from these fish as soon as possible, almost always the same day they are hauled in. All fish are identified to species level and counted. For the four sport fish in the Salton Sea, (tilapia, Gulf croaker, orangemouth corvina and sargo) weights, lengths (fork length), sex, physical condition, and reproductive status are recorded. Fish above five pounds are weighed to the nearest ounce. Fish below five pounds are weighed to the nearest half ounce. Lengths of fish under 50 centimeters are recorded to the nearest millimeter. Lengths of fish over 50 centimeters are recorded to the nearest centimeter. The sex of adult fish is determined by dissection. A sample of at least ten fish of each species is also dissected to determine physical condition and breeding status. Changes to Protocol after Year One: For previous researchers, deep water habitats provided some low level of productivity for the fisheries, and were important habitat components to sample. During the first year of sampling, however, the three deep water sites (north basin, south basin and inter-basin) were completely unproductive, a costly element of our efforts, and the least probable site for fish use, given the severe reduction in population size which was discovered in 2003. We therefore eliminated sampling at the three deep water sites, which reduced our efforts by 288 net-hours, to a quarterly total effort of 528 net-hours. These sites were left in the protocol, since they will likely provide useful information about population trends and habitat use, should the fisheries rebound to levels which allow robust comparisons among these and the other sampling sites. Footnote: There was a marked change in the weather immediately after our first sampling run on October 13, 2004 resulting in a 6º C drop in water temperature. After seeing how far the number of fish sampled on October 13, 2004 was out of the range of results at subsequent sites, we felt this drop in water temperatures justified resampling the two October 13, 2004 sites. The results were added to the total to compute a CPUE. We originally selected the months of October and November to enclose a putative Fall season, following the convention of Costa-Pierce and Riedel''s study at the Salton Sea in 1999-2000. This approach assumes a biologically significant change in water temperatures between sampling seasons. We have become more hesitant about assuming that the seasons at the Salton Sea fall within their assigned calendar months, and are so clearly discrete. As we saw during this Fall 2004 sampling period, water temperature changes within a sampling period may be as great or greater than those between sampling periods.

The deepwater survey was conducted by Marine Institute (MI) and the National University of Ireland, Galway (NUIG) from 9th - 22nd September, 2008. This survey was the third in a series, carried out on the RV Celtic Explorer, to acquire fishery and hydrographic data on the continental slope to the north and west of Ireland, and on the Porcupine Bank. As in the previous two years the survey was again coordinated with the Scottish Fisheries Research Service. This 2008 survey was carried out in the same three areas as 2006 and 2007. In each area trawl hauls were made at four depths, 500m, 1000m, 1500m and 1800 meters, along the slope. Conductivity, Temperature and Depth (CTD) transects were carried out as well as plankton sampling. At each station the entire catch was sorted to species level and weighed. Full biological sampling, length, weight, sex, maturity and age, was carried out on all commercial species. Additional biological sampling, without ageing, was carried out on all elasmobranchs and chimareids. All Invertebrates from each fishing tow were identified as far as possible and their catches weighed. A Marine Mammal Observer (MMO) was also present on board to conduct a visual survey for cetaceans. The main purpose of the survey was to collect biological data on the main deepwater fish species and invertebrates. The fisheries data collected will provide information for assessment of deepwater stock. Other purposes for the survey were to collect CTD data at set stations, and to carry out visual observations for marine mammals and seabirds.

General Fish Surveys compare trends among the fishery species in Lake Perris utilizing data that calculates catch per unit of effort (CPUE), relative abundance of each species and several population indices including length distribution, weight-length relationships, relative weight (Wr), and proportional size distributions (PSD) This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000450. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.

In situ visual surveys were conducted to generate size estimates and species composition of fish community habitat measurements (ledge height, macroalgal ht, sessile invertebrate ht) to characterize seafloor relief at survey locations

Total numbers of individual fish identified during the Cefas Young Fish Survey (YFS) which ran from 1981 to 2010. The survey deployed a light 2-meter beam trawl to survey inshore locations for small / young fish around the British Isles, predominantly along the south and east coasts. Total numbers of fish (identified to species or if not to the highest taxonomic level) were recorded at each station, and were measured in the majority of cases. The surveys were primarily undertaken to evaluate the abundance of juvenile sole and plaice, as well as providing further information on the abundance of other species of fish. Alongside the main 'Young Fish Survey Data 1981 to 2010' data table are three further data tables marked as 'YFS_DWC' which give the same data in EventCore format and a readme file which describes historic versions of metadata which this record has replaced.

General Fish Surveys compare trends among the fishery species in Lake Skinner utilizing data that calculates catch per unit of effort (CPUE), relative abundance of each species and several population indices including length distribution, weight-length relationships, relative weight (Wr), and proportional size distributions (PSD)

This data and metadata were submitted by California Department of Fish and Wildlife (CDFW) Staff though the Data Management Plan (DMP) framework with the id: DMP000449. For more information, please visit https://wildlife.ca.gov/Data/Sci-Data.

Marine Institute Herring Acousic Survey: The northwest and west coast herring acoustic survey programme was first implemented in 1994. Prior to this a larval survey programme was carried out between 1981 and 1986. The stock in this area is composed of 2 spawning components (autum and winter), covering a large geographical area. Spawning may extend over a 4 month period from late September through to late March (Molloy et al, 2000). Traditionally fishing activity has targeted spawning and pre-spawning aggrefations, no summer matjie fishery exists in this area, as is the case in the Celtic Sea. A project is currently underway to describe stock structure and discrimination of herring around Ireland. The results of this project may have implications for the design of this survey and for the stock assessment. This is the second survey of this stock carried out by the Celtic Explorer. Standard oceanographic research data collection to ascertain the condition of the ocean. MSFD characteristics. MSP scientific research. ICES CTD reporting. Fisheries ecosystem metocean analysis.

The data is reported in Catch Per Unit Angler (CPUA) which is a simple calculation of the number of fish caught divided by the number of anglers targeting the fishery type within a particular 1’ block in a given period. CRFS Catch records for all caught species were aggregated into 5-year bins from 2004-2022 as well as the entire period. All catch of these species were summed and attributed to the blocks (1’ x 1’ area) which were recorded during the survey interview. If multiple blocks were recorded, then the catch data was divided across all blocks indicated. Catch data is further divided into ‘kept’ and ‘released’ fish which is used to calculate a CPUA for only kept fish and a CPUA for both kept and released fish. The total number of anglers targeting any species in each block was calculated for each time frame. An angler represents a single person fishing in a block on a single day. The data is limited to blocks that had 3 or more reported fishing trips over the entire time period. Effort under the ‘All’ trip type is an aggregation of all anglers surveyed. This includes anglers from specific trip types such as highly migratory, salmon, bottomfish, coastal migratory, inshore, other anadromous, invertebrates and anything.Raw data from 2004 – 2015 was extracted from the Pacific States Marine Fisheries Commission (PSMFC) legacy RecFIN database. Data from 2016 – 2022 was extracted from the CDFW’s CRFS data system. The data is divided into reported catch (includes reported kept, reported released alive, and reported released dead), observed kept catch, effort and _location tables. Attributes:Block: 1’ grid where the data was reported.Catch: The species or the name of the species group whose individual catch records were aggregated. Trip Type: Trip type category that includes the primary target species for the angler that was aggregated. This layer is an aggregation of all angler effort. All_04_09: CPUA for both kept and released catch for 2004-2009. All_10_15: CPUA for both kept and released catch for 2010-2015. All_16_20: CPUA for both kept and released catch for 2016-2020. All_21_23: CPUA for both kept and released catch for 2021-2023. Kept_04_09: CPUA for only kept catch for 2004-2009. Kept_10_15: CPUA for only kept catch for 2010-2015. Kept_16_20: CPUA for only kept catch for 2016-2020. Kept_21_23: CPUA for only kept catch for 2021-2023. CPUA_All: CPUA for both kept and released catch for the entire 2004-2022 period. CPUA_Kept: CPUA for only kept catch for the entire 2004-2022 period. This field is used as the source of the symbology for this layer. Gray blocks represent where effort occurred, but no catch was reported. Samples: The number of individual survey samples that reported fishing in block for the entire period.

A key objective of the government's Policy for a More Competitive and Sustainable Fisheries Sector is to conduct national recreational fishing surveys every 5 years.

This report presents a cost-effective and repeatable framework for these surveys.

Archival data from fishing surveys conducted during cruises by the Marine Fisheries Institute.

the cgfs campaign is part of a historical series of fishing surveys that began in 1988 (cgfs eastern part, conducted on the r/v gwen drez) and was extended to cover the entire english channel regularly from 2018 (on r/v thalassa). oinly data for the eastern channel is presented. for data from the western channel please see "wcgfs".for both surveys, the main objective is to collect basic data for estimating the state of resources through direct assessment of stock abundance and distribution, along with biological sampling of the catches. taking place every year between mid-september and mid-october, it contributes to the european project for the contractualization of basic fishery data collection (dcf). the campaign also allows for sampling and a better understanding of the entire ecosystem, aligning with the implementation of an ecosystem-based approach to fisheries at the community level. the cgfs also provides data for numerous national and international research projects. the collected and validated data are transmitted at the end of each campaign to national databases (sih, harmonie, coriolis) and the european database (datras), enabling their use by different working groups and ensuring public access to this data. finally, the cgfs data contributes to the baseline assessment of the impact of numerous marine aggregates extraction projects (through a multi-year convention signed between the ministry of ecology, sustainable development and spatial planning, ifremer, and brgm) planned or underway in the eastern english channel.

The CGFS campaign is part of a historical series of fishing surveys that began in 1988 (CGFS Eastern part, conducted on the R/V Gwen Drez) and was extended to cover the entire English Channel regularly from 2018 (on R/V Thalassa). Only data for the Western Channel is presented. For data from the Eastern Channel please see "CGFS here: https://www.seanoe.org/data/00894/100620/". For both surveys, the main objective is to collect basic data to estimate the state of resources through direct assessment of stock abundance and distribution and biological sampling of the catches. Taking place every year between mid-September and end-September, it contributes to the European project for the contractualization of basic fishery data collection (DCF). The campaign also allows for sampling and a better understanding of the entire ecosystem, aligning with implementing an ecosystem-based approach to fisheries at the community level. The CGFS also provides data for numerous national and international research projects. The collected and validated data are transmitted at the end of each campaign to national databases (SIH, Harmonie, Coriolis) and the European database (DATRAS), enabling their use by different working groups and ensuring public access to this data. Finally, the CGFS data contributes to the baseline assessment of the impact of numerous marine aggregates extraction projects (through a multi-year convention signed between the Ministry of Ecology, Sustainable Development and Spatial Planning, IFREMER, and BRGM) planned or underway in the Eastern English Channel.

Abstract

Methods

Usage notes

Funding

These are the results of the annual DFO survey of key fish stocks. This survey tracks Fisheries and Oceans Canada’s implementation of its Sustainable Fisheries Framework policies.

The stationary point count (nSPC) method is used by the NOAA Pacific Islands Fisheries Science Center (PIFSC), Ecosystem Sciences Division (ESD; formerly the Coral Reef Ecosystem Division) to conduct reef fish surveys in the Hawaiian and Mariana Archipelagos, American Samoa, and the Pacific Remote Island Areas. The first iteration of the nSPC surveys were conducted as part of the Pacific Reef Assessment and Monitoring Program (RAMP) from 2008-2012. In 2013 the reef fish surveys, and Pacific RAMP, became part of the NOAA National Coral Reef Monitoring Program (NCRMP).

The nSPC method catalogs the diversity (species richness), abundance (numeric density) and biomass (fish mass per unit area) of diurnally active reef fish assemblages in shallow-water (less than 30 m) hard-bottom habitats. Visual estimates of benthic cover and topographic complexity are also recorded, with benthic organisms grouped into broad functional categories (e.g., 'Hard Coral', 'Macroalgae'). A stratified random sampling (StRS) design is employed to survey the coral reef ecosystems throughout the U.S.-Pacific regions. For all regions, the survey domain encompasses the majority of the mapped area of reef and hard bottom habitats and the stratification includes island, reef zone, and depth, with the exception of the Main Hawaiian Islands that includes habitat structure type as well. Sampling effort is allocated based on strata area.

Reef fish and benthic estimate data provided in this data set were primarily collected during ESD-led research cruises funded by the NOAA Coral Reef Conservation Program (CRCP) as part of Pacific RAMP or NCRMP. Additionally, data collected during Papahānaumokuākea Marine National Monument led research cruises to the Northwestern Hawaiian Islands from 2007 to 2017, and PIFSC annual Reef Fish Survey cruises from 2014 to 2016 in Guam, the main Hawaiian Islands, and American Samoa, respectively, are also included as these data are funded separately from but are complementary to the CRCP-funded data.