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Diatoms of North America
Practitioners
Morphology
Centric
Araphid
Eunotioid
Symmetric Biraphid
Monoraphid
Asymmetric Biraphid
Epithemioid
Nitzschioid
Surirelloid
Genera
Species
Glossary
About Us
News
Projects
Review Board
Taxon Contributors
Contact Us
What are diatoms?
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Species
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Planktonic
Size Range,
µm
3
11-100
101-1000
1001-10000
10001-100000
100001-1000000
Length/Diameter,
µm
Width,
µm
Stria density
per 10 μm, near center
Motility
Non-motile
Weakly motile
Slightly motile
Moderately motile
Highly motile
Attachment
Unattached
Prostrate
Tube-Forming
Vertical
Habitat
Soils
Moist habitats
Benthic
Planktonic
Milieu
Rivers
Lakes
Wetlands
Springs
Splash zones
Estuaries
Neritic
Sea Ice
Colony
Solitary
Colonies occasional
Colonies common
Biological Condition Gradient
BCG 1
BCG 2
BCG 3
BCG 4
BCG 5
Distribution
Western rivers 2004
Southeast rivers 2014
Northeast rivers 2016
Northwest rivers 2015
California coastal rivers 2017
Northeast lake sediments
Nat. Eco. Obs. Network (NEON)
Great Lakes inventory
Nitrogen Fixer
Nitrogen Fixer
Rare
Rare
Extinct
Extinct
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Displaying
29
of 1101 species
GC
Genus Considered
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Acanthoceras
Acanthoceras zachariasii
Asterionella
Asterionella formosa
Asterionella ralfsii var. americana
Aulacoseira
Aulacoseira granulata var. angustissima
Aulacoseira pusilla
Aulacoseira islandica
Bacillaria
Bacillaria paxillifera
Cavinula
Cavinula jaernefeltii
Cyclotella
Cyclotella kingstonii
Discostella
Discostella lakuskarluki
Discostella asterocostata
Distrionella
Distrionella incognita
Eunotia
Eunotia zasuminensis
Fragilaria
Fragilaria cyclopum
Lindavia
Lindavia affinis
Lindavia bodanica
Melosira
Melosira varians
Staurosirella
Staurosirella berolinensis
Staurosirella neopinnata
Stephanodiscus
Stephanodiscus hantzschii f. tenuis
Stephanodiscus reimeri
Tabularia
Tabularia fasciculata
Thalassiosira
Thalassiosira weissflogii
Thalassiosira lacustris
Ulnaria
Ulnaria contracta
Ulnaria acus
Ulnaria delicatissima
Ulnaria capitata
Urosolenia
Urosolenia eriensis