unit of measure
The rate or amount of precipitation (liquid or solid) deposited from the atmosphere.
Abiotic parameters are physical and chemical environmental factors that influence an ecosystem, such as temperature, light, water, soil, and chemical composition, independent of living organisms.
A data template is a standardized structure for organizing and recording data in a consistent and reproducible manner.
The amount of water vapour (relative humidity, dew point temperature) in the atmosphere.
Depth is the vertical distance below the surface.
A spatial region or named place.
Quantity (i.e. number of moles) of acid-neutralising bases per unit mass of the water column.
Concentration of arsenic per unit volume of the water body.
Concentration of cadmium per unit volume of the water body
The quantity (i.e. number of moles) of organic carbon (i.e. carbon not in carbonate or bicarbonate molecules) dissolved per unit volume of the water column
Volume of oxygen dissolved per unit volume of the water column.
The concentration of dissolved oxygen expressed as a proportion of the oxygen concentration in water that is in equilibrium with the atmosphere.
Minus the log of the hydrogen ion concentration (moles per litre) in the water column.
Concentration of inorganic carbon per unit volume of the water body, filtration and method unknown.
Quantity (i.e. number of moles) of inorganic nitrogen (i.e. nitrogen not in carbon compounds) dissolved per unit volume of the water column.
The amount (volume or mass) of suspended particule material per amount (volume or mass) of a body of water.
Concentrations of dissolved inorganic silicon usually as hydrosilicic acid (often called silicate) and biogenic silica.
The quantity of an entity gravitationally settling through a medium per unit area per unit time.
The mass of sodium chloride dissolved per unit mass of the water column (definition prior to introduction of PSS-78 Practical Salinity Scale).
Term to be used when the property reported is a characteristic of a survey (for example its area, its duration). A survey is a sampling activity which can be made up of a single or multiple sampling events.
An action that occurs at some location during some time.
The Phytoplankton Virtual Research Environment (PHYTO VRE) supports research on phytoplankton assemblages and their structure, organization, and ecological functions. It integrates data resources, web services, and modelling tools to address both basic and applied studies in phytoplankton ecology, with a level of resolution ranging from individual cells to entire assemblages.
One of six chemical elements classified as an alkaline earth metal. Its atomic number is 20.
Geometric model composed of more than one geometric shape.
The approximate shape of an organism.
A web service including a catalogue of geometrical models for calculating biovolume and surface area of phytoplankton taxa. It includes illustrative schemes of simple and complex shapes.
Volume of an organism (cell or colony). It is calculated according to the geometric equations, after association of geometric shape to the real shape of the organism and measurements of linear dimensions (length, width). It is used for samples that are analysed by imaging systems.
Biotic parameters are environmental factors related to living organisms and their interactions, including competition, predation, mutualism, and population density within an ecosystem.
An organism that lives on, in, or near the bottom of a water body, such as the seabed or the bottom of a freshwater system. This includes habitats in the littoral, sublittoral, and abyssal zones, and may cover areas exposed during low tide. The term may be further subdivided into depth-related benthic zones (e.g., infralittoral, circalittoral, bathyal, abyssal), which can also be used as attributes to describe the organism’s specific vertical distribution.
A web service for phytoplankton identification and classification. It provides illustrative pages for phytoplankton taxa including taxonomic information with photographs and or synonyms bibliographic references ecological and morphological characteristics and geographical distribution.
A geometric model composed of a single geometric shape.
An organism shape that approximates a cone.
Fine, parallel lines, rows of areolae, or grooves on the surface of algal cell walls (especially diatom frustules), often used as taxonomic characters.
The distribution of organisms in distinct areas, layers, or zones. Variations in depth and definition occur depending on the source, area, or research purpose.
An organism that live in the water column and is passively transported by currents, at least during part of their life.
Carbon content determined directly as particulate organic carbon of individual organisms or bulk communities, or indirectly by converting biovolume to carbon using empirical or theoretically derived equations.
Any group of organisms, often genetically identical, living together or in close proximity, association. It refers to a group of organisms in which the members act as specialised subunits and are able to function as a single organism.
A slender, filament-like organelle found in haptophyte algae, superficially resembling a flagellum but structurally and functionally distinct. The haptonema is not used for locomotion but for attachment, food capture, and sensing the environment.
The amount of living organic matter per unit area or per unit volume. It can be expressed in terms of biovolume, weight or carbon content and can be measured at different organisational levels.
The number of organisms, designated by taxonomic names (e.g. species, genus, family), per unit area or per unit volume.
The inherent ability of an organism to produce, accumulate, or release biochemical compounds that are harmful to other organisms, influencing survival, growth, or behavior.
Any environment that is primarily water-based.
The area occupied by the organism's surface.
Third dimension of a cell, measured perpendicular to its length and width.
Linear dimensions refer to measurements taken along a single straight line, such as diameter, width, height, or length, used to describe the size or spatial extent of an object.
An organism that can synthesise organic molecules from inorganic sources using energy from light via photosynthesis or from chemical reactions via chemosynthesis.
Bristle-like siliceous projections extending from the valves of certain diatoms (e.g., Chaetoceros). Setae can aid in buoyancy, defense, and colony formation, and their length, thickness, and ornamentation are important taxonomic features.
A longitudinal slit in the silica valve of motile diatoms, allowing the secretion of mucilage used for gliding locomotion.
Coccolith polygonal, may have perforations.
Microscopic calcium carbonate plates produced by coccolithophores. Coccoliths are secreted inside the cell and then extruded to cover the cell surface, forming a coccosphere. They occur in different shapes (e.g., calyptroliths, lopadoliths, scapholiths) and are important taxonomic features.
The full scientific name of the genus in which the taxon is classified.
A group of organisms (sensu http://purl.obolibrary.org/obo/OBI_0100026) considered by taxonomists to form a homogeneous unit.
An opening on the cell surface through which a flagellum emerges.
An online software service that enables interoperability between systems and applications via the internet. In the phytoplankton VRE, web services provide access to databases, modeling functions, or interactive data visualization.
Total concentration of suspended solid particles in water.
Concentration or amount of potassium ions.
Refers to waters that are nutrient-rich, with high concentrations of nitrogen and phosphorus, abundant algal and plant growth, reduced transparency, and possible oxygen depletion.
Water trophic status refers to the classification of water bodies based on their nutrient availability and biological productivity, which together determine the capacity of the system to support algal and plant growth.
Ellipsoidal coccoliths with a raised rim, in some cases the high rim forms a vase or cup-like structure.
The first girdle band of a diatom frustule, directly attached to a valve (epivalve or hypovalve). It is usually distinguished from the other girdle bands by its position and, in some taxa, by its ornamentation.
One of the two siliceous halves of a diatom frustule. Each valve forms part of the rigid cell wall and is usually highly ornamented with features such as striae, areolae, and raphe. The two valves (epivalve and hypovalve) overlap at their margins and are joined by the girdle (cingulum) to form the complete frustule.
Sum of all nitrogen forms (organic, nitrate, nitrite, ammonia) in a sample.
The full scientific name of the superfamily in which the taxon is classified.
The axis running perpendicular to the apical axis, across the width of the valve in apical view. Third axis of a bilateral diatom.
The name of the water body in which the location occurs.
Organic carbon suspended in water as particles, including phytoplankton and detritus, per unit volume of the water column.
The orientation of a phytoplankton cell when observed from the ventral (front) side, usually defined relative to the sulcus (in dinoflagellates) or the main body axis.
Orientation of a diatom cell when observed from the side of one of its valves (the flat surface of the epivalve or hypovalve). In this view, the valve face and its ornamentation (striae, areolae, raphe) are visible.
A web service to analyze and interpret phytoplankton size-class distribution patterns.
The name of the first or species epithet of the scientificName.
The full scientific name of the class in which the taxon is classified.
Coccolith rhombohedral, with parallel lines in center.
Size-fractionated phytoplankton biomass for microplankton.
Postcingular plates are the thecal plates located immediately below the cingulum, forming the upper portion of the hypotheca.
Thecal plates are rigid, cellulose-based structural elements that together form the theca, the protective outer covering of thecate dinoflagellates. They are arranged in a species-specific pattern, and their number, shape, and arrangement define the cell morphology, polarity, and structural organization. The configuration of thecal plates is a primary diagnostic feature in dinoflagellate taxonomy and systematics.
An organism possessing cellulose thecal plates.
The specific description of the place.
An identifier (preferably unique) for the record within the data set or collection.
An existence of a dwc:Organism at a particular place at a particular time.
Primary production for picoplankton.
The rate at which photosynthetic organisms produce net useful chemical energy after accounting for respiration.
Disc- or bowl-shaped coccoliths
The full scientific name of the family in which the taxon is classified.
Radiating ridges or thickened lines on certain thecal plates of dinoflagellates, used as diagnostic features in tabulation.
A diversity index that accounts for both species richness and evenness based on information theory.
A web service to calculate phytoplankton community indices using different combinations of spatial and temporal levels. Common indices include Shannon, Simpson, and Pielou's Evenness and others.
Cluster analysis is a set of exploratory multivariate statistical techniques used for the grouping of samples or species, aiming to classify objects (observations or variables) into clusters based on their similarity or dissimilarity in order to reveal underlying patterns or structures in the data.The grouping is based on a measure of distance or similarity (e.g., Euclidean distance, Manhattan distance, correlation) and is carried out without a priori assumptions regarding the number or structure of the clusters.
Systematic examination of data.
A projection extending from the posterior (antapex) of some dinoflagellate cells.
Antapical plates are the posterior-most thecal plates, located at the antapex of the cell. They form the terminal part of the hypotheca and may give rise to antapical spines or horns.
Fine, hair-like projections on the surface of flagella in some algae (e.g., chrysophytes, cryptophytes). They increase the surface area of the flagellum and enhance swimming efficiency.
Long, whip-like appendages used for movement or feeding.
Total concentration of dissolved substances (such as calcium, magnesium, sodium, chlorides, sulfates, and bicarbonates) and small amounts of dissolved organic matter in water.
In dinoflagellate morphology, para , meta and ortho are terms used to describe the cell shape based on the relative displacement of the epitheca and hypotheca along the longitudinal axis. In ORTHO shape, epitheca and hypotheca are arranged in a straight, continuous line along the longitudinal axis, with no displacement or offset. The cell appears symmetrical and elongated, with the cingulum encircling the middle.
Eyespot (stigma) is a light-sensitive intracellular structure found in some motile phytoplankton, involved in light perception and phototactic orientation.
Rarefaction analysis is a statistical resampling method used to standardize species richness or diversity among samples with different sampling efforts, allowing meaningful comparisons by estimating the expected number of species for a given number of individuals or samples.
A protein-rich body inside chloroplasts where starch or other reserve products are stored.
Refers to waters with intermediate nutrient levels and productivity, supporting moderate algal and plant growth. Considered transitional between oligotrophic and eutrophic states.
The type of quantification system used for the quantity of organisms.
A cap-like structure or covering at the end of a cell or filament, often seen in certain algae and cyanobacteria.
The upper or anterior half of a phytoplankton cell covering (e.g. theca in dinoflagellates, frustule in diatoms), usually the larger portion.
The rigid siliceous cell wall of diatoms, composed of two valves (epivalve and hypovalve) joined by a series of girdle bands (cingulum). The frustule is often intricately ornamented with features such as striae, areolae, and pores, which are important in diatom taxonomy.
Total phosphorus in all forms (organic, inorganic, particulate, dissolved).
The process that is used to produce a specific research result in a concrete domain. A workflow comprises a series of components that are arranged in a directed graph to set the order of execution of such components. Therefore, a workflow is usually a complex process and may involve both automatic and manual procedures for dealing with research objects and documenting them. Workflows may need instantiation in terms of input data and process parameters.
Radiating, unornamented lines or sectors extending from the valve center toward the margin in some diatoms, forming clear radial zones without perforations, striae or areolae.
A contractile organelle in some dinoflagellates thought to play a role in osmoregulation.
Total concentration of Ca²⁺ and Mg²⁺ ions in water.
Concentration or amount of magnesium ions.
Power of electromagnetic radiation per unit area (light received).
The number of transects refers to the number of diametral transects counted across the bottom of a sedimentation chamber.
Density by diameter transect counting is a quantitative microscopy method in which organisms settled on the bottom of a sedimentation chamber are counted along one or more transects spanning the chamber diameter.
The Utermöhl method is the standard quantitative technique for phytoplankton counting. Samples are preserved (commonly with Lugol’s iodine), allowed to sediment in counting chambers, and examined using an inverted microscope.
Thin, plate-like extensions of the theca along the edges of the cingulum in some dinoflagellates.
The equatorial groove of dinoflagellates that contains the transverse flagellum.
Root Mean Square Error (RMSE) is a widely used metric to evaluate model performance; quantifies average difference between observed and predicted values.
A dominance index that quantifies the relative importance of the most abundant species in a community.
The number of striae (rows of areolae) counted within a 10 µm section when arranged diagonally (obliquely) to the main axes of a diatom valve.
Basket or cup-shaped coccoliths with a high rim, opening distally
Density by whole chamber counting is a quantitative microscopy approach in which all organisms settled on the bottom of the sedimentation chamber are counted, rather than a subsample of fields or transects.
Horseshoe or wishbone shaped coccoliths.
Ordination method that represents pairwise dissimilarities between samples in a low-dimensional space.
Primary production for microplankton.
In dinoflagellate morphology, para , meta and ortho are terms used to describe the cell shape based on the relative displacement of the epitheca and hypotheca along the longitudinal axis. In META shape, Epitheca and hypotheca are offset (displaced) along the longitudinal axis, giving the cell an asymmetrical appearance with displaced halves.
A number or enumeration value for the quantity of organisms.
The lower half of a diatom frustule, usually the smaller valve, which fits partly inside the upper valve (epivalve).
A web service for cleaning or subsetting raw data and to exclude from the data files taxa based on their ranked distribution in density, biovolume or carbon content.
A membrane-bound organelle found in algae and plants that contains pigments and is the site of photosynthesis and other biosynthetic processes. In phytoplankton, plastids may contain chlorophylls and accessory pigments, giving cells their characteristic colors.
The area of one microscope field of view at the used magnification.
The diameter of the field of view (FOV) is the linear distance across the circular area visible through a microscope at a given magnification. Used to calculate the field area and estimate the scale of observed specimens.
The infrageneric part of a binomial name at ranks above species but below genus.
The four-digit year in which the event occurred, according to the Common Era Calendar.
Refers to waters enriched with humic substances from decaying organic matter, typically brown in color, acidic, with low availability of nutrients for algae despite high organic content (common in bogs and peatlands).
The status of the use of the scientificName as a label for a taxon. Requires taxonomic opinion to define the scope of a taxon. Rules of priority then are used to define the taxonomic status of the nomenclature contained in that scope, combined with the experts opinion. It must be linked to a specific taxonomic reference that defines the concept.
The integer month in which the event occurred.
The axis running through the center point of the two valves of a diatom.
A placolith with a spiral margin
Highest rate of photosynthesis under optimal light conditions.
Refers to organisms inhabiting coastal waters over the continental shelf, typically nutrient-rich and well-lit, as opposed to oceanic or deep-sea zones.
Depth of visible light penetration, often measured with Secchi disk.
A perforated siliceous plate covering an areola in the valve of some diatoms. The cribrum has many tiny pores and functions as a sieve-like structure.
Pigment-containing structures that give cells their color and may aid in photosynthesis.
The full scientific name of the order in which the taxon is classified.
Apical plate 3′ is the third plate of the apical series in the epitheca of thecate dinoflagellates.
Apical plates are a set of thecal plates located in the epitheca, near the apex of the cell, in thecate dinoflagellates. They form part of the apical series in the Kofoidian plate tabulation system and are conventionally indicated by prime symbols (′). The number, shape, and arrangement of apical plates are key diagnostic characters in dinoflagellate taxonomy.
A pore or pore-bearing plate at the apex of some dinoflagellates, often used as a diagnostic feature in tabulation.
The apical axis is the longitudinal morphological axis of a phytoplankton cell that extends from the apex (anterior end) to the antapex (posterior end).
An evenness index that measures how evenly individuals are distributed among species in a community.
The name of the country or major administrative unit in which the location occurs.
The integer day of the month on which the event occurred.
The main external opening of a diatom areola, typically visible on the valve surface. In some taxa, the foramen is covered internally by a cribrum or other sieve-like structure.
A hyaline ring-shaped structure or zone on the surface of some phytoplankton cells, often surrounding a central pore or area.
Concentration of nitrate nitrogen per unit volume of the water column.
Inorganic phosphorus available for biological uptake (usually orthophosphate).
Hurlbert’s PIE (Probability of Interspecific Encounter) measures the probability that two randomly selected individuals from a community belong to different species.
Convex disc shaped coccoliths, may with a projecting central process.
A species richness index that relates the number of species to the logarithm of total abundance.
Disc-shaped coccoliths, with numerous perforations in the central area.
Apical plate 1′ is the first plate of the apical series located in the epitheca of a thecate dinoflagellate, positioned adjacent to the apical pore complex.
Concentration or amount of lead.
The full scientific name of the kingdom in which the taxon is classified.
Concentration or amount of manganese.
Refers to phytoplankton species that have been reported as potentially toxin-producing, but without consistent or conclusive confirmation across studies or strains.
A type of coccolith (calcium carbonate plate) produced by coccolithophores, typically formed during the haploid phase of the life cycle. Zygoliths differ in shape and structure from coccoliths of the diploid phase and are important for identifying life-cycle stages in coccolithophores.
The effective number of species derived from Simpson’s index, representing the number of equally abundant species needed to produce the observed Simpson diversity.
The posterior (lower) portion of a dinoflagellate cell below the cingulum.
Concentration of nitrite nitrogen per unit volume of the water column.
Refers to waters that are nutrient-poor, with low concentrations of nitrogen and phosphorus, high oxygen content, low biological productivity, and usually high transparency.
The geographic latitude (in decimal degrees, using the spatial reference system) of the geographic center of a location. Positive values are north of the Equator, negative values are south of it. Legal values lie between -90 and 90, inclusive.
A central, unornamented zone on the valve that resembles a raphe but lacks a true slit and is non-functional for motility.
Electron Transport Rate (ETR) is a photosynthetic parameter that quantifies the rate at which electrons are transferred through the photosynthetic electron transport chain, primarily associated with Photosystem II (PSII) during the light reactions of photosynthesis. ETR is commonly used as an indicator of photosynthetic activity and efficiency.
Organelles containing pigments (like chlorophyll) where photosynthesis takes place.
The full scientific name, with authorship and date information if known. When forming part of a identification, this should be the name in lowest level taxonomic rank that can be determined.
Short, hair-like projections covering the cell surface, used for movement or creating currents.
Concentration or amount of sulfate ions.
The name of the lowest or terminal infraspecific epithet of the scientificName, excluding any rank designation.
Refers to phytoplankton species or blooms that negatively affect ecosystems, human health, or water quality (e.g., harmful algal blooms).
Primary production for nanoplankton.
A measure of compositional dissimilarity between communities or samples, based on species abundances or presence–absence data.
A thickened area or silica deposit on the valve resembling a nodule, but not a true structural nodule.
Microscopic photosynthetic organisms (mainly unicellular algae and cyanobacteria) that live suspended in aquatic environments. They form the base of the aquatic food web and produce a significant share of Earth’s oxygen through photosynthesis.
Efficiency of photosystem II photochemistry in dark-adapted state.
The full scientific name of the phylum or division in which the taxon is classified.
Total carbon fixed by photosynthesis in an ecosystem.
Basket-shaped coccoliths with openings near the base.
The effective number of species derived from the Shannon index, representing the number of equally abundant species needed to produce the observed Shannon diversity.
A gelatinous, sticky substance secreted by cells, often forming protective layers or colonies.
The number of random fields refers to the count of microscope fields of view selected at random within the sedimentation chamber and examined during microscopic analysis.
Density by random field counting is a quantitative microscopy method in which organism density is estimated by counting individuals in a fixed number of randomly selected microscope fields of view within the sedimentation chamber.
Water temperature measured in situ.
The degree of hotness of an object, a measurement matrix, an environment, expressed against a standard scale.
Degré de chaleur d'un objet, d'une matrice, d'un environnement, exprimé selon une échelle standard.
Concentration or amount of chloride ions
A diversity index based on the distance of a community from a hypothetical community in which all species are equally abundant.
The posterior end of a phytoplankton cell, opposite the apical region.
PCA is an unsupervised ordination method that reduces dimensionality by summarizing variance in species data into a reduced set of orthogonal components. PCA achieves this by transforming a set of possibly correlated variables into a smaller number of uncorrelated variables, known as principal components, which are linear combinations of the original variables and are ordered according to the amount of variance they explain.
A girdle band is an individual silica band forming part of the girdle of a diatom frustule.
The part of the frustule located between the epivalve and the hypovalve, consisting of the epicingulum and hypocingulum
Orientation of a cell when observed from the side of the girdle (cingulum).
Concentration or amount of iron.
A raised ridge or fold along the cingulum, sometimes bearing lists, characteristic of some dinoflagellate genera.
Setae (bristle-like siliceous projections) that arise from the terminal ends of a diatom cell or valve. They may aid in buoyancy, defense, or colony formation and are diagnostic in some genera.
A longitudinal groove on the surface of dinoflagellates, where the longitudinal flagellum is inserted.
A single plate with a club-shaped central process.
A replicate is an independent repetition of a measurement, observation, or experimental unit performed under the same conditions to assess variability, improve precision, and ensure reliability of results.
Number of species present in a community or sample.
The dilution (or concentration) factor is a dimensionless coefficient that quantifies the change in concentration of a sample resulting from dilution or concentration procedures. It is defined as the ratio between the final volume and the original sample volume and is used to convert measured concentrations to original (or concentrated) values.
Redundancy Analysis (RDA) is a constrained ordination technique and an extension of Principal Component Analysis (PCA) that relates multivariate response data to explanatory variables through linear constraints.
A species richness index that accounts for the number of species relative to the logarithm of total abundance. The Gleason Index is defined as (S − 1) / ln(N), where S is species richness and N is total abundance.
A tubular or funnel-like invagination of the cell membrane used to ingest food particles.
Size-fractionated phytoplankton biomass for nanoplankton.
Refers to waters that are extremely nutrient-enriched, with excessive algal blooms, very poor water clarity, frequent oxygen depletion (anoxia), and degraded ecological conditions.
Apical plate 2′ is the second plate of the apical series in the epitheca of thecate dinoflagellates.
The geographic longitude (in decimal degrees, using the spatial reference system) of the geographic center of a location. Positive values are east of the Greenwich Meridian, negative values are west of it. Legal values lie between -180 and 180, inclusive.
Ordination method that relates community composition directly to environmental variables.
A measure of species turnover or variation in species composition among sites or samples.
A type of coccolith produced by coccolithophores, distinguished by its elongated, boat- or canoe-shaped morphology.
Apical plate 4′ is the fourth plate of the apical series located in the epitheca of thecate dinoflagellates.
Placoliths are a type of coccolith, characterized by a flat, disk-like structure composed of two shields (a distal shield and a proximal shield) connected by a central tube or collar.
The arrangement and pattern of thecal plates forming the outer covering of dinoflagellates, used for classification.
A treatment is a defined experimental condition applied to test its effect on a response variable.
The settling volume is the volume of sample introduced into the sedimentation chamber and allowed to settle before microscopic examination.
A tubular process on the valve of centric diatoms, typically surrounded by satellite pores. Fultoportulae function in secretion and buoyancy regulation and are diagnostic morphological features in many diatom groups.
The full scientific name of the subfamily in which the taxon is classified.
Small pore-like structures on the surface of some algal cell walls, typically arranged in patterns.
The upper half of a diatom frustule, usually the larger valve, which overlaps the lower valve (hypovalve).
A thin perforated layer of silica across an areola.
Regularly repeated perforation through the valve wall, often marked by more or less elaborate multiangular walls or ribs.
A projection or extension from the apical end of some dinoflagellate cells.
SARIMAX (Seasonal AutoRegressive Integrated Moving Average with eXogenous regressors) is a seasonal extension of ARIMA that incorporates external regressors to model and forecast time series influenced by both internal dynamics and exogenous factors.
An identifier for the broader dwc:Event that groups this and potentially other events.
Refers to organisms that normally live attached to surfaces or in benthic habitats, but which can occur temporarily in the plankton when detached and carried by water movements.
A simplified computation method within the Trait Computation web service that uses shape approximations (e.g., length × width) to estimate size-related traits such as biovolume and surface area; faster and widely used.
A web service for the calculation of phytoplankton traits, such as biovolume, surface area, surface-to-volume ratio, density, cell carbon content, total biovolume, and total carbon content.
The standard code for the country in which the location occurs.
An identifier for the set of information associated with a event (something that occurs at a place and time). May be a global unique identifier or an identifier specific to the data set.
The linear distance from the edge of the valve face to the base of the mantle, usually expressed in micrometers (µm).
The side wall of a diatom valve, connecting the valve face to the girdle (cingulum). The mantle often bears striae or areolae and is important in species identification.
Orientation of a phytoplankton cell observed from the side opposite to a main groove or sulcus (general orientation term).
Concentration or amount of mercury.
A dominance index that measures the proportional contribution of the most abundant species to the total community abundance.
The authorship information for the scientificName formatted according to the conventions of the applicable nomenclaturalCode.
A diversity index that measures the probability that two randomly selected individuals belong to the same species.
Orientation of a phytoplankton cell seen from the side, without emphasis on grooves or transverse bands.
An evenness index derived from the Shannon index that measures how evenly individuals are distributed among species in a community.
A species richness index that relates the number of species to the square root of total abundance.
Comments or notes about the taxon or name.
An advanced computation method for the Trait Computation web service that uses species-specific geometric models and multiple measured dimensions (e.g., a, b, h) to compute biovolume and/or surface area.
Gas-filled intracellular structures (also referred to as gas vesicles) found in certain aquatic microorganisms, particularly cyanobacteria. They provide buoyancy regulation, allowing cells to adjust their vertical position in the water column.
A web service to create a community matrix (usually rows = samples, columns = taxa/species) , from the input data file for each taxonomic, spatial and temporal level selected, based on the trait density, carbon content, biovolume.
Size-fractionated phytoplankton biomass for picoplankton.
The full scientific name of the subgenus in which the taxon is classified.
A web service to calculate size - abundance relationships at local, regional or global scale.
Cingular plates are the thecal plates forming the cingulum, the equatorial groove that encircles the cell and separates the epitheca from the hypotheca.
Identifier assigned to a specific sampling event by a cruise.
The anterior (upper) portion of a dinoflagellate cell above the cingulum.
A season is a recurring period within a year characterized by consistent environmental, climatic, or biological conditions, such as changes in temperature, precipitation, or photoperiod.
Plate-like bands that make up the cingulum in dinoflagellates, forming its structural elements.
Precingular plates are the thecal plates located immediately below the apical plates and above the cingulum.
Refers to algae that grow attached to substrates (such as rocks, sediments, or plants) but are not firmly fixed, forming loose mats or layers that can detach and float in the water
The lower or posterior half of a phytoplankton cell covering, typically the smaller portion that fits into the epitheca. Lower part of frustule.
In dinoflagellate morphology, para , meta and ortho are terms used to describe the cell shape based on the relative displacement of the epitheca and hypotheca along the longitudinal axis. In PARA shape, epitheca and hypotheca are aligned, giving the cell a symmetrical appearance.
Comments or notes accompanying the MeasurementOrFact.
The area of the sedimentation chamber is the bottom surface area of the counting chamber over which particles or organisms settle during sedimentation prior to microscopic examination.
The straight-line distance across the circular sedimentation counting chamber. Used to calculate the chamber’s total area when circular (Area = π × radius²).
All of the processes used by organisms to generate metabolically usable energy, chieﬂy in the form of ATP, from the oxidative breakdown of foodstuffs. May refer to processes ranging from the exchange of oxygen and carbon dioxide between organism and environ­ment, to the biochemical processes gen­erating ATP at the cellular level. a. respiratory, pert. or involved in re­spiration. see also aerobic respiration, anaerobic respiration, glycolysis, oxidative phosphorylation.
Statistical or computational model designed to estimate or predict the value of a response variable for new or future observations based on the relationship between one or more predictor (independent) variables and the outcome.
The full name, with authorship and date information if known, of the currently valid (zoological) or accepted (botanical) taxon.
An organism growing on the surface of rocks or other hard inorganic or organic substrata.
Organism not known to produce or accumulate harmful biochemical compounds.
An organism lacking cellulose thecal plates.
The number of areolae counted within a 10 µm section along a diatom girdle band (part of the cingulum).
The number of areolae counted within a 10 µm section of the valve face.
The number of costae counted along a 10 µm section of the frustule, used as a diagnostic morphometric character in diatom taxonomy.
Thickened, rib-like silica structures on the frustule of certain diatoms, usually alternating with striae, providing support and rigidity.
The spectral range of solar radiation from 400 to 700 nanometers that organisms are able to use for photosynthesis.
An organism growing on the surface of a living plant but not parasitic upon it.
The dimension of the lorica, measured perpendicular to its length, usually expressed in micrometers (µm).
A protective external covering or shell secreted by some unicellular organisms.
The shortest linear dimension of a cell, measured perpendicular to its length, from end to end along the shortest axis of the cell.
The linear distance across a auxospore measured through its center.
Specialized cell formed during the sexual reproduction of diatoms. Auxospores restore the maximum cell size of the lineage, which progressively decreases during successive vegetative divisions. The auxospore expands and develops into a new frustule, re-establishing the original size range of the species.
Organism able to produce or accumulate toxins that can negatively affect other organisms.
The linear dimension of an akinete measured along its longest axis.
A single-celled, thick-walled, non-motile spore derived from vegetative cell of filamentous, heterocyst-forming cyanobacteria (orders Nostocales and Stigonematales). Akinetes are typically larger than vegetative cells, withstand environmental extremes such as cold and desiccation, and germinate when conditions improve.
The total distance from point to point along the longest axis of a cell.
An organism that can obtain energy and nutrients through both autotrophic (self-feeding) and heterotrophic (consuming other organisms) methods.
Feeding by engulfing a food cell or particle and ingesting it in a phagocytic vacuoles. Heterotrophic feeding mode in some dinoflagellates (e.i.Gyrodinium spirale).
Diatoms in which both valves possess a raphe. These are typically motile diatoms, capable of gliding locomotion along surfaces.
The linear dimension of an akinete measured perpendicular to its longest axis, usually expressed in micrometers (µm).
The number of areolae (pores) counted within a 10 µm section along the margin of a diatom valve.
The number of fibulae (silica cross-struts supporting the raphe canal) counted within a 10 µm section along the valve margin of a diatom. This morphometric feature is widely used as a diagnostic character in the taxonomy of genera such as Nitzschia and related taxa.
The series of thickened silica cross-struts that support the raphe canal in certain diatoms.
The linear distance measured across a coccolith (calcium carbonate plate of coccolithophores), usually expressed in micrometers (µm). It is a key morphometric character for identifying and classifying coccolithophore species.
Linear dimension of the lorica measured along its longitudinal axis,usually expressed in micrometers (µm).
The number of areolae counted within a 10 µm section along the lateral (side) areas of a diatom valve.
Diatoms that entirely lack a raphe. These forms are generally non-motile.
The linear distance across a heterocyst measured through its center.
A specialized, thick-walled cell formed by certain filamentous cyanobacteria, whose primary function is biological nitrogen fixation.
The production and emission of light by a living organism. Bioluminescence is strongly related to intraspecific communication, such as mate finding,or predator–prey interactions.
The linear dimension of a coccolith measured perpendicular to its length (the shorter axis), usually expressed in micrometers (µm).
The thickness or vertical dimension of a coccolith (its three-dimensional relief), usually expressed in micrometers (µm).
The cross-sectional diameter or thickness of a trichome, measured perpendicular to its longitudinal axis.
Chain or filaments of connected cells forming part of a colonial or filamentous structure.
An organism growing or living on mud (sediments, clays, and silt), residing at the interface of water and sediment.
The number of areolae counted within a 10 µm section along the mantle (side wall) of a diatom valve.
An organism that is unable of making organic molecules from inorganic sources of carbon and relies on the consumption of organic molecules synthesized by other organisms.
The linear dimension of a coccolith measured along its longest axis, expressed in micrometers (µm).
An organism that consists of only one cell.
The number of areolae counted in a 10 µm section located between the central and apical areas of a diatom valve.
An evenness measure based on the relationship between observed diversity and maximum possible diversity.
Concentration of ammonium per unit volume of a river, estuary, sea or ocean by any method in filtered or unfiltered water.
The speed of air relative to the ground or sea surface.
Variables associated with the determination of the air temperature near the Earth's surface.
For macroalgae, it refers to the surface occupied by the thallus. It can be estimated using colorimetry, image analysis and physical measurement of leaf area (Armstrong et al., 2003).
For phytoplankton, it refers to the area of a single cell or colony, after association of geometric shape to the real shape of the organism (Hillebrand et al., 1999).
Prorocentrum, Dinophysis, Heterocapsa, Alexandrium.
Bray-Curtis, Jaccard, Euclidean
Amphidinium, Gymnodinium, Gyrodinium, Karlodinium, Karenia.
Rainfall
phyto vre thesaurus
Abiotic parameter
Data Template
Humidity
Humidité
depth
Location
ALKALINITY
Arsenic in water body
Cadmium in water body
DISSOLVED ORGANIC CARBON
DISSOLVED OXYGEN
OXYGEN SATURATION
PARTICULATE INORGANIC CARBON
DISSOLVED INORGANIC NITROGEN
Conductivity
Turbidity
Silicates
Sedimentation flux
Salinity
survey
Event
PHYTOPLANKTON VRE
Calcium
Complex shape
Shape
Atlas of Shapes
Biovolume
Biotic parameter
Benthic
Atlas of Phytoplankton
Simple shape
Cone
Transversal striae in 10µm
Striae in 10 µm
Striae
Distribution
Central striae in 10 µm
Pervalvar striae in 10µm
Dorsal striae in 10µm
Planktonic
Carbon content
Colonial
Length of haptonema
Haptonema
Biomass
Density
Toxicity
Transapical striae in 10µm
Aquatic
Surface Area
Cell thickness
Linear dimensions
Striae along the setae in 10µm
Autotroph
Setae per valve
Setae
Terminal striae in 10 µm
Marginal striae in 10 µm
Monoraphid
Raphe
Striae (apex) in 10µm
Coccolith-prismatolith
Coccoliths
Genus
Taxon
Flagellar pore
e-Service
Total Suspended Solids
Potassium
Eutrophic
Water trophic status
Coccoliths-discolith
Valvocopula
Valve
Total Nitrogen
Superfamily
Transapical axis
Water Body
Particulate Organic Carbon
Ventral view
Valve view
Size Class
Specific Epithet
Class
Coccolith-scapholith
Chlorophyll Microplankton
Chlorophyll a content
Postcingular plates
Thecal plates
Thecate
Locality
Catalog Number
Occurrence
Primary Production Picoplankton
Net Primary Production
Coccoliths-caneolith
Family
Ribs
Shannon Index
Diversity Indices
Cluster Analysis
Data analysis
Antapical horn
Antapical plates
Mastigonemes
Flagella
Total Dissolved Solids
Ortho shape
Eyespot
Rarefaction Analysis
Pyrenoid
Mesotrophic
Organism Quantity Type
Calyptra
Epitheca
Frustule
Total Phosphorus
Workflow
Hyaline band
Pusula
Hardness
Magnesium
Light intensity (irradiance)
Number of Transects
Density per Diameter Transects
Utermöhl Counting Method
Cingular lists
Cingulum
Root Mean Square Error
Berger-Parker Index
Oblique striae in 10µm
Coccolith-lopadolith
Density by Whole Chamber Counting
Coccoliths-ceratolith
Non-metric Multidimensional Scaling
Primary Production Microplankton
Meta shape
Organism Quantity
Lower valvae
Data Filtering
Plastid
Area of Field of View
Diameter of Field of View
Infrageneric Epithet
Year
Dystrophic
Taxonomic Status
Month
Pervalvar axis
Coccolith-helicolith
Maximum Photosynthetic Rate
Neritic
Transparency
Cribrum
Chromatophors
Order
Apical plate 3'
Apical plates
Apical Pore
Apical Axis
Pielou's Evenness
Country
Day
Foramen
Annulus
Nitrate
Dissolved Inorganic Phosphorus
Hurlbert’s Index
Coccoliths-cyrtolith
Margalef Index
Coccoliths-cribrilith
Apical plate 1'
Lead
Kingdom
Manganese
Possibly toxic
Coccolith-zygolith
Simpson Equivalents
Hypocone
Nitrite
Oligotrophic
Decimal Latitude
Pseudoraphe
Electron Transport Rate
Chloroplasts
Scientific Name
Cilia
Sulfate
Infraspecific Epithet
Harmful
Primary Production Nanoplankton
Dissimilarity Index
Pseudonodule
Phytoplankton
Maximum Quantum Yield of PSII
Phylum
Gross Primary Production
Calyptroliths
Shannon Equivalents
Mucilage
Number of Random Fields
Density per Random Fields
Water Temperature
Temperature
température
Chloride
McIntosh Index
Antapex
Principal Component Analysis
Girdle band
Girdle
Girdle view
Iron
Cingular crest
Terminal setae
Sulcus
Total Chlorophyll
Coccolith-rhabdolith
Replicate
Taxonomic Richness
Factor
Redundancy Analysis
Gleason Index
Gullet
Chlorophyll Nanoplankton
Hypertrophic
Apical plate 2'
Decimal Longitude
Canonical Correspondence Analysis
Beta Diversity
Coccoliths-scapholith
Apical plate 4'
Coccolith-placolith
Tabulation
Treatment
Settling Volume
Fultopurtula
Subfamily
Poroids
Upper valvae
Velum
Areola
Apical horn
Seasonal AutoRegressive Integrated Moving Average with eXogenous regressors
Parent Event ID
Tychoplanktic
Traits Computation (simplified)
Traits Computation
Country Code
Event ID
Mantle height
Mantle
Dorsal view
Mercury
McNaughton Dominance
Scientific Name Authorship
Simpson Index
Lateral view
Sheldon Evenness
Menhinick Index
Taxon Remarks
Traits Computation (advanced)
Aerotopes
Community Matrix
Chlorophyll Picoplankton
Subgenus
Size Density Relationship
Cingular plates
Cruise
Epicone
Season
Cingular bands
Precingular plates
Metaphytic
Hypotheca
Para shape
Measurement Remarks
Area of Sedimentation Chamber
Diameter of Sedimentation Chamber
Respiration
Previsional Model
Accepted Name Usage
Epilithic
Non toxic
Athecate
Areolae (bands) in 10µm
Areolae in 10µm
Costae in 10 µm
Costae
Photosynthetically Active Radiation
Epiphytic
Lorica width
Lorica
Cell width
Auxospore diameter
Auxospore
Toxic
Akinete length
Akinete
Cell length
Mixotroph
Phagotrophic feeding
Biraphid
Akinete width
Marginal areolae in 10 µm
Fibulae in 10 µm
Fibulae
Coccolith Diameter
Lorica length
Lateral areolae in 10 µm
Araphid
Heterocysts diameter
Heterocyst
Bioluminescence
Coccolith Width
Coccolith height
Trichome width
Trichome
Epipelic
Areolae (mantle) in 10µm
Heterotroph
Coccolith Length
Unicellular
Intermediate areolae in 10µm
Ludwig-Reynolds Evenness
Water body ammonium
Wind speed
Air Temperature
Température de l'air
ALKW
ARSW
CADW
PHYTO VRE
Combination of shapes
Cell shape
Form
Type
Biov
Cell volume
Benthonic
Benthos
Cone-shaped
Conic
Conical
Coniform
Conoid
Coloniality
Modular
Modularity
Haptonema length
Absolute density
Abundance
Cell height
Cellular height
Cellular thickness
Autotrophic
Autotrophs
autotrophic organisms
autotrophy
photoautotrophs
photoautotrophy
photosynthetic organisms
phototroph
phoyoautotrophic organisms
Seta
Prismatolith
genus
TSS
Discolith
Valves
superfamily
waterBody
POC
specificEpithet
class
Scapholith
Chl micro
Armored
with teca
locality
catalogNumber
PP pico
NPP
Caneolith
family
TDS
Stigma
Rarefaction
organismQuantityType
Hard
Mg²⁺
Irr
n_transects
Utermöhl
RMSE
Lopadolith
Ceratolith
NMDS
PP micro
organismQuantity
Hypovalve
Area FOV
FOV
diameter FOV
infragenericEpithet
year
taxonomicStatus
month
Helicolith
Secchi disk
Transp
order
(Po)
apical axis
country
day
Foramina
NO₃⁻
DIP
Orthophosphate
PO₄³⁻
Hurlbert’s PIE (Probability of Interspecific Encounter)
Cyrtolith
Cribrilith
kingdom
Zygolith
NO₂⁻
dec LAT
decimalLatitude
pseudo-raphe
ETR
scientificName
SO₄²⁻
infraspecificEpithet
PP nano
Fv/Fm
phylum
GPP
Calyptrolith
N field
n_fields
Cl⁻
PCA
Cinture
Chl tot
Rhabdolith
RDA
Chl nano
Hypereutrophic
dec LONG
decimalLongitude
CCA
β diversity
β-diversity
Placolith
volume of sedimentation chamber
Fultopurtulae
subfamily
Epivalve
SARIMAX
parentEventID
countryCode
eventID
mantle (phytoplankton)
scientifcNameAuthorship
taxonRemarks
Chl pico
subgenus
measurementRemarks
acceptedNameUsage
PAR
Epiphyte
Epiphytes
Width of lorica
Cellular width
Diameter of auxospore
Length of akinete
Cellular length
Width of akinete
fibula
Length of lorica
Diameter of heterocysts
Heterotrophic
Heterotrophs
heterotrophic organisms
Single-Cell Organism
Single-cell
Solitary
Ammonium
accepted
Harris, R.P., Wiebe, P.H., Lenz, J., Skjoldal, H.R., Huntley, M. (Eds) ICES Zooplankton Methodology Manual, Academic Press, 684 pp.
MarLIN, 2006. BIOTIC - Biological Traits Information Catalogue. www.marlin.ac.uk/biotic
Kofoid, C. A. (1909). On the classification of dinoflagellates. Zoologischer Anzeiger, 34, 192–203.
Lincoln, R.J., Boxshall, G.A., Clark, P.F., 1998. Dictionary of ecology, evolution and systematics. 2nd ed. Cambridge: Cambridge University Press.
McLeod, C.R., 1996. Glossary of marine ecological terms, acronyms and abbreviations used in MNCR work. In: Marine Nature Conservation Review: Rationale and methods, (ed. K. Hiscock), pp 93-117. Peterborough: Joint Nature Conservation Committee.
Dodds, W.K. and Whiles, M.R. (2010) Concepts of Ecology: Concepts and Environmental Applications of Limnology. Second Edition. Elsevier Inc. 829 pp.