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OBSERVATIONS ON NAVICULA THALLODES (BACILLARIOPHYCEAE), A BLADE‐FORMING DIATOM FROM THE BERING SEA1

John Patrick Kociolek, Michael J. Wynne

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Abstract

ABSTRACT A thallus‐forming diatom, Navicula thallodes Proschkina‐Lavrenko, previously known only from the original collection at Bering Island (U.S.S.R.), has been found at Amchitka Island in the Aleutians, Alaska. The most remarkable observation of the present report is that N. thallodes may form blades up to 50 cm long, which to our knowledge is the greatest length reported for a colonial diatom. SEM observations of this diatom are presented for the first time.

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What this paper is about

ABSTRACT A thallus‐forming diatom, Navicula thallodes Proschkina‐Lavrenko, previously known only from the original collection at Bering Island (U.S.S.R.), has been found at Amchitka Island in the Aleutians, Alaska. The most remarkable observation of the present report is that N. thallodes may form blades up to 50 cm long, which to our knowledge is the greatest length reported for a colonial diatom. SEM observations of this diatom are presented for the first time.

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Available abstract

ABSTRACT A thallus‐forming diatom, Navicula thallodes Proschkina‐Lavrenko, previously known only from the original collection at Bering Island (U.S.S.R.), has been found at Amchitka Island in the Aleutians, Alaska. The most remarkable observation of the present report is that N. thallodes may form blades up to 50 cm long, which to our knowledge is the greatest length reported for a colonial diatom. SEM observations of this diatom are presented for the first time.

Key concepts: Navicula, Diatom, Biology, Thallus, Oceanography, Algae, Nitzschia, Botany

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