AndreaBozzo/ceres-open-data-index huggingface dataset:
Sessile Benthic Assemblages in Northern Crete assessed from Photographic Quadrats  (2008–2024)

This dataset contains sessile benthic coverage data derived from photographic quadrat samples collected in two time periods (2008–2009 and 2024) at two coastal sites in Northern Crete: Alykes (Heraklion) and Elounda Bay (Agios Nikolaos). Sampling was conducted along two transects per site at five depths (1 m, 5 m, 10 m, 15 m, and 20 m), using two quadrat sizes (25×25 cm and 100×100 cm) to capture replicate images. The data offer valuable insights into temporal shifts in sessile organism communities, highlighting changes potentially linked to climate change and the increasing presence of invasive herbivorous fish species, such as siganid fish and diademid sea urchins.
Sampling was conducted through non-destructive underwater photographic surveys of fixed-area quadrats. Two permanent transects were established in each study area (Alykes and Elounda) and sampled at five depths (1, 5, 10, 15, and 20 meters) during spring seasons of 2008, 2009, and 2024. At each depth, five photographic quadrats (either 25×25 cm or 100×100 cm) were positioned along the transects on hard substrates. Each image was later analysed using a stratified point count method with 100 randomly distributed points per photo to estimate the percent cover of sessile macrobenthic taxa.The study was conducted in northern Crete, specifically in the coastal areas of Alykes and Elounda. Sampling took place during the spring seasons of 2008, 2009, and 2024, with two transects surveyed per site each year across five depth zones (1, 5, 10, 15, and 20 meters). The study focuses on hard substrate habitats and is representative of typical rocky reef environments in the eastern Mediterranean.
SHARK - National marine environmental monitoring of Seal pathology in Sweden

The national monitoring program was initiated by the Swedish Environmental Protection Agency and is now financed by the Swedish Agency for Marine and Water Management.Monitoring is performed by the Swedish Museum of Natural History. Data is stored in the Swedish archive for oceanographic data (SHARK) database, curated by SMHI.Information about the program and the methods are available in Swedish at the website of the Swedish Agency for Marine and Water Management https://www.havochvatten.se/vagledning-foreskrifter-och-lagar/vagledningar/ovriga-vagledningar/overvakningsmanualer-for-miljoovervakning/overvakningsmanualer/patologi-hos-grasal-vikaresal-och-knubbsal.html
Information about the program and the methods are available in Swedish at the website of the Swedish Agency for Marine and Water Management https://www.havochvatten.se/vagledning-foreskrifter-och-lagar/vagledningar/ovriga-vagledningar/overvakningsmanualer-for-miljoovervakning/overvakningsmanualer/patologi-hos-grasal-vikaresal-och-knubbsal.htmlStudy ExtentMonitoring programMethod step description:Seal pathology using necropsy and histopathological findings of dead seals has been monitored in and around Swedish coasts since 2008.This monitoring program is focused toward determining the health status of seal populations via autopsies of animals that are collected and sent to the Swedish Museum of Natural History. In addition, the program is also aimed for finding and measuring potentially harmful substances in biota.Sampling provides information to describe the cause of death among seals.
Phytoplankton community and primary production time series in the coastal and open waters at the Adriatic Sea (2002-2015)

We provide datasets that include parameters regarding phytoplankton community, primary production and chl a measurements. Chlorophyll a concentrations analysis started from 1972 till 2017 and included coastal and open waters stations. Phytoplankton community analysis consist of datasets started from 1952-2017 while primary production measurements were obtained from 1962.
Datasets were gained from projects Vir- Konavle started from 1976. This project included coastal stations along Middle and South Adraitic and was performed seasonaly. National monitoring programe Jadran started 1998 and among coastal stations, measurements were performed at  open waters  (three transects across Adriatic). The project was active till 2012.  Operational and regulatory monitoring of transitional and coastal waters of 2014-2018 is ongoing project. Primary production has been measured monthly form 1962 on two station in coastal and open waters.
Scleractinia of Eastern Australia - AIMS Monograph Series - John (Charlie) Veron

Scleractinia of Eastern Australia
The dataset was digitised from 5 volumes of the monograph series "Scleractinia of Eastern Australia". The dataset contains 329 species, from 267 collecting stations all located within Australian waters. The dataset was digitised by Evanthia Karpouzli of the ALA and using the ALA Spatial Portal and the ALA Gazetteer Service. All the locations were verified by John (Charlie) Veron.
Macrozoobenthos data collected in the Northern part of the Romanian littoral (Danube mouths) between 1977 and 1999

The macrozoobentos dataset includes a number of 347 samples collected in the Northern part of the Romanian littoral between Sulina and Chituc from 5 m to 52m depths. Van Veen grab with a sampling area of 1/20 m2 was employed as a macrozoobenthos sampler. One replicate was collected at every station. Sampling was done in spring, summer and autumn mounths.The samples have been analyzed qualitative (number of species) and quantitative (densities and biomasses). The macroinvertebrates have been identified at species level.
Gelatinous zooplankton in the Belgian part of the North Sea and the adjacent Westerscheldt estuary, period 2011-2012

Many ocean ecosystems ar ethought to be heading towards a domiance of gelatinous organisms. However, gelatinous zooplakton has been largely understudied and the absence of quantitative long-term data for the studied area impeded drawing conclusion on the potential increasing densities. This study gives a comprehensive overview of the spatio-temporal distribution patterns of gealtinous zooplankton in terms of diversity and density bewteen March 2011 and February 2012 in the Belgian part of the North Sea and the adjacent Westerschelde estuary, based on monthly and seasonal samples respectively.
The gelatinous zooplankton samples were collected using a 1m-diameter, 1000µm-mesh CalCOFI plankton net, undulated three times through the water column (sine wave from sea surface to bottom) at a speed of 3 knots. One replicate was taken at each station. In the Belgian part of the North Sea, three stations on a coastal-intermediate-open sea transect were monthly sampled. Additonally, seasonal samples (March, June, September and December) were taken at three stations in the Westerscheldt estuary from the lower over the middle to the upper estuary. Most Ctenophora and Scyphozoa were isolated fro mthe CalCOFI samples on board and immediately identified, counted and measured (oral-aboral length and disch diameter, respectively; mm). The rest of the samples was preserved in a 4% formaldehyde-seawater solution. The fixed samples were further analysed in the laboratory, where the hydromedusae and the remaining small ctenophores and scyphomedusae were isolated, counted and identified to species or higher taxon level.
Ecoscope Observation Database

Dataseries collected for tropical tuna fisheries and research of tuna and associated species.
This dataset represents a part of the joint database of UMR212-EME (Exploited Marine Ecosystems) research unit (IRD, Ifremer, University of Montpellier 2 and related partner like YugNIRO: Southern Scientific Research of Marine Fisheries and Oceanography, Ukraine).This database is used to manage various dataseries collected for tropical tuna fisheries and research of tuna and associated species (so far mainly YugNIRO and IRD datasets).Biology of top predators in the open ocean ecosystem including distribution, size and weight parameters, trophic ecology, and sexual maturity are covered. In the forthcoming years more data will be available.
Macrozoobenthos-North Adriatic-Gulf of Trieste, C1-LTER time-series 2014-2018

Collection of soft-bottom macrozoobenthos invertebrates at a coastal site in the buffer zone of a marine protected area in the Gulf of Trieste. The collection is a time series from July 2014 to January 2018.
The sediments were collected with a van Veen grab (0.1m2; 18L) and the species were identified and counted by using a stereomicroscope. This study, which was carried out by the OCE-OGS group, provides information on species fluctuations and changes over the seasons and years.
SHARK - Regional monitoring and monitoring projects of Epibenthos in Sweden since 1994

Regional monitoring programs for Epibenthos have been performed since 1994 in Sweden. The monitoring is financed by the Swedish county administration boards, Swedish municipalities and Swedish coalitions of water conservation.  Recipient control data financed by companies are also included. Sampling is performed by a large number of different institutes and consulting firms. Data from monitoring projects are also included in this dataset. The data is stored in the database SHARK, hosted and maintained by the Swedish Meteorological and Hydrological Institute. The Epibenthos monitoring programs and projects studies hard and soft bottoms from the surface down to 10-20 meters. Data is collected in transects or squares with help of divers. Species abundances are determined directly by the divers or photographs are taken and analyzed later.
Data is collected in transects or squares with help of divers. Species abundances are determined directly by the divers or photographs/video are taken and analyzed later. Discipline: Marine biology; Datatype: Epibenthos; Measuring area type: point; Platform class: diver, video, photo; Parameters: # counted, Abundance class, Average shoot length, Bare substrate cover, Boulder cover, Cover, Cover (%), Cover class, Cover class, Cover class filamentous algae, Debris cover, Density in covered area, Depth distribution (max depth), Dry weight, Gravel cover, Hard clay cover, Max shoot length, Min shoot length, No species found., Observed species, Rhizome biomass, Rhizome juice sugar content, Rock cover, Salinity, Sand cover, Shoot biomass, Shoot density, Silt soft clay cover, Species distribution max depth, Species distribution min depth, Stone cover, Substrate specific cover, Temperature, Total cover of all species (%), Unidentified algae cover. 

More information about the method is available in Swedish at https://www.havochvatten.se/hav/samordning--fakta/miljoovervakning/miljoovervakningens-programomrade-kust-och-hav/delprogram-vegetationskladda-bottnar.html and https://www.havochvatten.se/hav/samordning--fakta/miljoovervakning/samordning-av-miljoovervakning/regional-miljoovervakning.html
Macrozoobenthos data collected in the East Constanta sector of the Romanian marine waters between 1977 and 1999

The macrozoobentos dataset includes a number of 234 samples collected in the East Constanta sector of the Romanian marine waters from five standard stations (Station 1-5) between 14 m to 55m depths. Van Veen grab with a sampling area of 1/20 m2 was employed as a macrozoobenthos sampler. One replicate was collected at every station. Sampling was done in winter, spring, summer and autumn mounths.The samples have been analyzed qualitative (number of species) and quantitative (densities and biomasses). The macroinvertebrates have been identified at species level.
SNU-FF Macrobenthos (1999)

The macrozoobenthos of the Southern Black Sea coast (Turkey) was quantitatively investigated during May-July 1999.
The macrozoobenthos of the Southern Black Sea coast (Turkey) was quantitatively investigated during May-July 1999. Samples taken at 39 stations (13-79 m depth range) provided the basis for the analysis of the distribution of 130 species and 6335 individuals of benthic invertebrates, as well as of their abundance and biomass. Most common species in the studied soft bottoms were, by numbers of individuals, Melinna palmata, Lentidium mediterraneum, Lucinella divaricata and Chamelea gallina. The polychaets Micronephths cf. maryae, Aricidea fragilis mediterranea, and Chone filicaudata for the entire Black Sea coast and Eumida sanguinea, Mysta picta, and Prionospio (Prionospio) steenstrupi represent new records for the Turkish Black Sea coast.
SNU-FF Meiobenthos (2009-2010)

Meiobenthos data, as well as data on water parameters and sediment parameters, was gathered at 8 stations along the Turkish Black Sea coast, during 12 sampling events, at 2 depths (3 and 10m). All data is restricted.
Meiobenthos data was gathered at 8 stations along the Turkish Black Sea coast, during 12 sampling events, at 2 depths (3 and 10m). Samples were collected by scuba diving, using a sediment tube corer. The following taxa could be observed: Nematoda, Harpacticoida, Polychaeta, Foraminifera (soft-shelled), Bivalvia, Ostracoda, Turbellaria, Oligochaeta, Ciliophora, Gromia and Nauplia. 

In addition, data on water parameters (temperature, salinity, conductivity, pH, dissolved oxygen, nitrate, nitrite, phosphate, silicate and total dissolved solids) and data on sediment parameters (pH, water content, porosity, granule size, organic matter content and redox conditions) were gathered. 

All data is restricted.
Microzooplankton data (Tintinnida) collected during First Ukrainian Antarctic Expedition (March-April 1997) on board of R/V Krenkel

Dataset includes zooplankton data (limited to order Tintinnida Kofoid and Campbel, 1929) collected during First Ukrainian Antarctic Expedition (March-April 1997) on board of R/V Krenkel.
The purpose of the original data collection was the study of Antarctic krill population (Euphausia superba Dana) and other main pelagic component of South-Orkney sub-region Scotia Sea and Bransfield Strait. Dataset includes zooplankton data (limited to order Tintinnida Kofoid and Campbel, 1929) collected during First Ukrainian Antarctic Expedition (March-April 1997) on board of R/V Krenkel. Samples were collected from different depths (25, 50, 70, 75, 100, 135 and 150 m) by bathometer and bucket from the surface. The volume of the sample - 5 L. Samples were concentrated by direct filtration to a final volume of 70 - 100 ml and fixed by formalin. Further samples were concentrated to 10-20 ml and analyzed with optical microscope at magnification x 12.5. 

At IBSS, the data were digitized from paper processing books, quality-controlled and transformed to comply with the Darwin Core/OBIS Schema. Funds for data operations were kindly provided by the Census of Marine Life International Cosmos Prize Fund, through a grant to Rutgers University.
Phytoplankton data collected during cruise 38 (December 1986 - April 1987) on board of R/V Dmitriy Mendeleev

Dataset includes phytoplankton data collected during cruise 38 (December 1986 - April 1987) on board of R/V Dmitriy Mendeleev.
Phytoplankton samples were processed by L. Senichkina (IBSS). Detailed methodology described in: Ecosystems of the Eastern Boundary Currents and Central Regions of the Pacific Ocean, M.E. Vinogradov and E.I. Musaeva, eds., Nauka, Moscow, pp. 213-229. 

At IBSS, the data were digitized from paper processing books, quality-controlled and transformed to comply with the Darwin Core/OBIS Schema. Funds for data operations were kindly provided by the Census of Marine Life International Cosmos Prize Fund, through a grant to Rutgers University.
National Pilot Monitoring Studies August 2017, Improving Environmental Monitoring in the Black Sea - Phase II (EMBLAS-II), ENPI/2013/313-169, (Phytoplankton)

Phytoplankton data: species composition, volume of the cell [µm3], abundance [*1000cells/l], biomass (mg/m3) and Carbon biomass collected during the survey of the National Pilot Monitoring Studies Ukraine (NPMS UA) in the Ukrainian waters (North-Western part of the Black Sea) onboard the M/V "Auguste Piccard" (Ukraine) in August 201
Data collected within the EMBLAS-II "EU-UNDP Project 'Improving Environmental Monitoring in the Black Sea' (EMBLAS-II)" (http://emblasproject.org/). EMBLAS-II is co-financed by the European Commission (EC) and United Nations Development Programme (UNDP). The project implementation started on 1 April 2014 and ended on 31 May 2018, having the total duration of 50 months. The EMBLAS project is addressing the overall need for support in protection and restoring the environmental quality and sustainability of the Black Sea. The specific objectives are as follows: Improve availability and quality of Black Sea environmental data in line with the MSFD and Black Sea Strategic Action Plan (2009) needs; Improve partner countries' ability to perform marine environmental monitoring along MSFD principles, taking into account the Black Sea Diagnostic Report II recommendations on capacity building.
The National Pilot Monitoring Studies (NPMS) and Joint Open Sea Survey (JOSS) Programme was developed within the framework of Project Activities. The NPMS-2017 was performed in period 2017.08.15 to 2017.08.20 in the Ukrainian waters (North-Western part of the Black Sea) onboard the M/V "Auguste Piccard" (Ukraine).  
16 samples were obtained during NPMS UA August 2017. Quantitative phytoplankton samples were collected by vertical series consisting from several sampling depths. The depths were chosen with an idea to collect samples from main hydrophysical layers. These layers were defined according to CTD-sounding which was fulfilled before the phytoplankton sampling at each station. Special attention has been paid to fluorescence profiles obtained simultaneously with the CTD-sounding. The samples were collected from upper mixed layer, upper thermocline layer, lower thermocline layer, near bottom layer and chlorophyll-a maximum (if this maximum did not coincide with other sampling layers). For collecting were used 5 L Niskis bottles, attached to CTD rosette system. The phytoplankton sample was collected at the depth of the fluorescent maximum. 1-2 L of water at each discrete depth were sampled.  Sampling performed by M. Grandova (UkrSCES)
Arqueomonitor project: Abundance of the Bucentaure and Fougueux shipwrecks benthic communities, Cadiz Bay (Spain) 2012-2013

This dataset contains abundance data of the benthic community around the shipwrecks Bucentaure and Fougueux, in the Cadiz Bay, Spain during 2012-2013 within the framework of the Arqueomonitor Project. Three random replicated belt transects of 50× 300 cm by site (shipwreck) and season were carried out. The ARQUEOMONITOR Project, supported by the Spanish Ministry of Economy and Competitiveness and FEDER (CTM2009-08668 and CTM2010-16363) studied in what grade, the generation, conservation or degradation of archaeological sites are influenced by marine environmental variables, employing two wrecks of the same chronology subjected to very different environmental conditions, Fougueux and Bucentaure (1805)
BLM CETAP OPP Sightings

Data of population surveys conducted by the Cetacean and Turtle Assessment Program to assess the distribution and abundance of whales, dolphins and sea turtles inhabiting the study area.
The Cetacean and Turtle Assessment Program (CETAP) was sponsored by the Bureau of Land Management and surveys were conducted between October 1978 and January 1982 by the University of Rhode Island in outer continental shelf waters of the northeastern United States from Cape Hatteras, North Carolina, to the Gulf of Maine and from shore to 9.3 km (5 nautical miles) seaward of the 1,829 m (1,000 fathoms) isobath. Population surveys were conducted by CETAP to assess the distribution and abundance of whales, dolphins and sea turtles inhabiting the study area.


Purpose

This dataset is a subset of CETAP sightings, extracting opportunistic sighting records, with the addition of taxonomic information of species sighted. The full dataset may be available upon request. Requests for more data, further details on the dataset, proper use of the dataset, and questions should be directed to the primary contact person.
Happywhale - Rough-toothed dolphin in North Atlantic Ocean

Happywhale.com is a resource to help you know whales as individuals, and to benefit conservation science with rich data about individual whales.
Supplemental information: Sightings and images were submitted to Happywhale by contributors. A portion of the Happywhale data were transferred to OBIS-SEAMAP upon the agreement between Happywhale and OBIS-SEAMAP. There may be duplicate records among Happywhale datasets and other OBIS-SEAMAP datasets. The precision of date/time vary per record. Some records have date accuracy up to year only. This dataset includes sightings and photos from the following 1 contributors in alphabetic order: Hazel Pittwood
1975 University of London Kent Ficopomatus enigmaticus collections

A monthly sampling programme was carried out in 1975 of an intertidal population of Ficopomatus enigmaticus at Greenhithe, Kent. Greenhithe is on the south side of the Thames Estuary, and the study site (O.S. TQ 59367548), beneath a disused jetty belonging to Empire Paper Mills, is immediately opposite the large power station at West Thurrock, and 33-8 km below London Bridge, the normal limit for sea water ingression.
Hyperiid amphipod abundances from the California Current (24-32°N)

The California Current system (CCS) comprise two large regions, one subarctic from central California to British Columbia, and other subtropical from Point Conception, California to the tip of Baja California peninsula. To progress in the knowledge of the subtropical part of the CCS, was created the IMECOCAL program, which means “Mexican Research of the California Current”. The data base presented here is a product of the zooplankton collection during ten IMECOCAL cruises.
Zooplankton samples were collected with oblique net tows in the upper 200 m (or from 10 m above the sea floor in shallow stations), using a Bongo net of 500 µm mesh width and mouth diameter of 0.7 m. Four cruises correspond to the four seasons of 2005 and the rest are summer cruises preformed during 2002-2008. Hyperiid amphipods were identified using mainly the taxonomic key for Hyperiidea of the world oceans (Vinogradov et al., 1996). The total number of samples analyzed were 482 but hyperiids were absent in 18. The positive samples were 75% of the oceanic stations collected during nighttime, and the rest were from neritic stations (11% nighttime and 14% daytime). The total number of species found are 125, with strong dominance of Vibilia armata, Lestrigonus schizogeneios, Primno brevidens, and Eupronoe minuta. The abundances of these and other common species changes seasonally as described by Lavaniegos - Hereu (2009), and interannually as observed in summer of the period 2002-2008 for the northern Baja California region (Lavaniegos, 2017) and the Gulf of Ulloa and offshore region (Lavaniegos, under review).
Happywhale - Long-finned Pilot Whale in Arctic Ocean

Happywhale.com is a resource to help you know whales as individuals, and to benefit conservation science with rich data about individual whales.
Original provider: Happywhale Dataset credits: Happywhale and contributorsSupplemental information: Sightings and images were submitted to Happywhale by contributors. A portion of the Happywhale data were transferred to OBIS-SEAMAP upon the agreement between Happywhale and OBIS-SEAMAP. There may be duplicate records among Happywhale datasets and other OBIS-SEAMAP datasets. The precision of date/time vary per record. Some records have date accuracy up to year only. This dataset includes sightings and photos from the following 4 contributors in alphabetic order: Amanda Urena; Hondius; MS Otto Sverdrup; Theo Vickers