Encyclopedia of Life (original) (raw)

u

ultraoligotrophic alpine freshwater lake

http://eol.org/schema/terms/ultraoligotrophicAlpineFreshwaterLake

ultraoligotrophic freshwater lake

http://eol.org/schema/terms/ultraoligotrophicFreshwaterLake

umbrella

http://purl.obolibrary.org/obo/ENVO\_02000052

A canopy designed to protect against precipitation or sunlight.

umbrisol

http://purl.obolibrary.org/obo/ENVO\_00002253

Umbrisols are soils in which organic matter has accumulated within the mineral surface soil (in most cases with low base saturation) to the extent that it significantly affects the behaviour and utilization of the soil.

unbranched

http://purl.obolibrary.org/obo/PATO\_0000414

lacking branches

uncertainty

http://semanticscience.org/resource/SIO\_000769

The uncertainty value (margin of error) of a measurement is a range of values likely to enclose the true value.

uncommon

http://eol.org/schema/terms/uncommon

Common species and uncommon species are designations used in ecology to describe the population status of a species. Commonness is closely related to abundance. Abundance refers to the frequency with which a species is found in controlled samples; in contrast, species are defined as common or uncommon based on their overall presence in the environment. A species may be locally abundant without being common.

https://en.wikipedia.org/wiki/Common\_species

unconfirmed holotype

http://eol.org/schema/terms/unconfirmedHolotype

A specimen that may be a holotype, but its type status has not yet been confirmed.

unconfirmed lectotype

http://eol.org/schema/terms/unconfirmedLectotype

A specimen that may be a lectotype, but its type status has not yet been confirmed.

unconfirmed paratype

http://eol.org/schema/terms/unconfirmedParatype

A specimen that may be a paratype, but its type status has not yet been confirmed.

unconfirmed syntype

http://eol.org/schema/terms/unconfirmedSyntype

A specimen that may be a syntype, but its type status has not yet been confirmed.

unconfirmed type

http://eol.org/schema/terms/unconfirmedType

A specimen that may be a type, but its type status has not yet been confirmed.

undecanoic acid

http://purl.obolibrary.org/obo/CHEBI\_32368

underground

http://eol.org/schema/terms/underground

underground lake

http://purl.obolibrary.org/obo/ENVO\_00000058

A lake which is formed under the surface of the Earth. Such a lake may be associated with caves and aquifers and springs.

underground river

http://purl.obolibrary.org/obo/ENVO\_00000059

A river that is under the surface of the Earth.

underground stream

http://purl.obolibrary.org/obo/ENVO\_00000060

A stream that is under the surface of the Earth.

underground water

http://purl.obolibrary.org/obo/ENVO\_00005792

underground water body

http://purl.obolibrary.org/obo/ENVO\_00000061

A geographical feature associated with water that is under the surface of the earth.

understory

http://purl.obolibrary.org/obo/ENVO\_01000335

a layer of plant life which grows below the canopy without penetrating it.

undescribed marine species present in museum collections

http://eol.org/schema/terms/UndescribedSpeciesInMuseumCollections

"marine species in this clade which are currently represented in specimen collections (estimate) (Appeltans et al. 2012. The Magnitude of Global Marine Species Diversity. Current Biology 22, 2189–2202. http://dx.doi.org/10.1016/j.cub.2012.09.036)"

undiscovered marine morphospecies

http://eol.org/schema/terms/UndiscoveredMorphospecies

unsampled and undiscovered marine morphospecies in this clade (estimate) (Appeltans et al. 2012. The Magnitude of Global Marine Species Diversity. Current Biology 22, 2189–2202. http://dx.doi.org/10.1016/j.cub.2012.09.036)

undulatory

https://www.wikidata.org/entity/Q7884068

motion characterized by wave-like movement patterns that act to propel an animal forward. eg: crawling in snakes, or swimming in the lamprey. Typically utilized by limbless animals

unguligrade

https://www.wikidata.org/entity/Q476026

species that walk on the tips of their toes, often protected by hooves

unicellular

http://purl.obolibrary.org/obo/PATO\_0001994

consisting of exactly one cell

uninervous

http://eol.org/schema/terms/uninervous

leaf having a central midrib with no lateral veins

unisexual flowers

https://eol.org/schema/terms/unisexual\_flowers

in which either the stamens or the carpels are missing, vestigial or otherwise non-functional. Each flower is either "staminate" (having only functional stamens) and thus "male", or "carpellate" (or "pistillate") (having only functional carpels) and thus "female". If separate staminate and carpellate flowers are always found on the same plant, the species is called monoecious. If separate staminate and carpellate flowers are always found on different plants, the species is called dioecious.

Beentje, Henk (2010). The Kew Plant Glossary. Richmond, Surrey: Royal Botanic Gardens, Kew. ISBN 978-1-84246-422-9.

univoltine

http://eol.org/schema/terms/univoltine

completing one generation per year

unknown

http://eol.org/schema/terms/unknown

This statement may be true or false; the answer to this question is unknown.

unsegmented

https://eol.org/schema/terms/unsegmented

https://www.wikidata.org/entity/Q15332375

upland soil

http://purl.obolibrary.org/obo/ENVO\_00005786

upper confidence limit

http://purl.obolibrary.org/obo/STATO\_0000314

upper confidence limit is a data item which is a largest value bounding a confidence interval

http://bioportal.bioontology.org/ontologies/STATO/

upper cretaceous epoch

http://resource.geosciml.org/classifier/ics/ischart/UpperCretaceous

upper devonian epoch

http://resource.geosciml.org/classifier/ics/ischart/UpperDevonian

International Chronostratigraphic Chart: http://www.stratigraphy.org/index.php/ics-chart-timescale

upper jurassic epoch

http://resource.geosciml.org/classifier/ics/ischart/UpperJurassic

upper montane

http://purl.obolibrary.org/obo/ENVO\_01000345

a montane condition in which an altitude range falls immediately below the tree line

upper ordovician epoch

http://resource.geosciml.org/classifier/ics/ischart/UpperOrdovician

International Chronostratigraphic Chart: http://www.stratigraphy.org/index.php/ics-chart-timescale

upper pleistocene age

http://resource.geosciml.org/classifier/ics/ischart/UpperPleistocene

International Chronostratigraphic Chart: http://www.stratigraphy.org/index.php/ics-chart-timescale

upper triassic epoch

http://resource.geosciml.org/classifier/ics/ischart/UpperTriassic

upper-level epifaunal

http://eol.org/schema/terms/upperEpifaunal

Organism living on the surface of the substratum on rocks or biogenic substrates a considerable distance above the seafloor.

upward conveyor

http://polytraits.lifewatchgreece.eu/terms/RW\_UC

Upward conveyors are vertically oriented species that typically feed head-down at depth in the sediment. Vertically oriented head-down feeders actively select and ingest particles at the deeper sediments and egest these non-locally as faeces in the sediment surface

upward conveyor

https://eol.org/schema/terms/upward\_conveyor

aquatic consumers oriented head-down in sediments, where they feed at depth and transport sediment through their guts to the sediment surface.[18] Major upward-conveyor groups include burrowing polychaetes like the lugworm, Arenicola marina, and Thalassinid shrimps.

https://en.wikipedia.org/wiki/Bioturbation#Evolution

upwelling

http://purl.obolibrary.org/obo/ENVO\_01000005

An oceanographic feature that involves wind-driven motion of dense, cooler, and usually nutrient-rich water towards the ocean surface, replacing the warmer, usually nutrient-deplete surface water.

urban

http://purl.obolibrary.org/obo/ENVO\_01000249

a dense settlement biome which has been urbanised

uric acid

http://purl.obolibrary.org/obo/CHEBI\_27226

An oxopurine that is the final oxidation product of purine metabolism.

urinary system

http://purl.obolibrary.org/obo/NCIT\_C12413

anatomical structure that consists of organs and organ subclasses responsible for certain body functions. Representative examples are the gastrointestinal system, urinary system, and hematopoietic system

used for

http://eol.org/schema/terms/Uses

The uses of the organism or products derived from the organism.