Distribution and abundance of the diatom Ethmodiscus rex off the west coast of North America

McHugh, James L.

doi:10.1016/0146-6313(54)90004-0

Cited by 14 publications

(2 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Under low nutrient-flux conditions, netplankton biomass decreased below 25% of the total chlorophyll a. The existence of a variety of netphytoplankton with extremely low biomass in the euphotic zone has been confirmed in various pelagic waters with low nutrient flux (McHugh, 1954;Takahashi et al, 1983Takahashi et al, , 2000Goldman, 1993;Ishizaka et al, 1997). Large diatom cells are known to maintain their active photosynthetic rate under such poor nutrient flux in natural water (Goldman, 1993;Kuwata et al, 1996), but they cannot increase their biomass due to possible losses by grazing and sinking.…”

Section: Discussionmentioning

confidence: 96%

Netplankton Chlorophyll Biomass along 175°E in the Pacific Ocean

Han¹,

Ikeya²,

Takahashi³

2004

Journal of Oceanography

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 96%

Netplankton Chlorophyll Biomass along 175°E in the Pacific Ocean

Han¹,

Ikeya²,

Takahashi³

2004

Journal of Oceanography

View full text Add to dashboard Cite

“…Indian Oceans (Villareal 1993 and references therein), and tropical waters (Swift 1973, Round 1980. It also has been found in coastal waters (McHugh 1954). In equatorial oceans, Ethmodiscus rex is one of the three most common diatoms (Swift 1973).…”

mentioning

confidence: 99%

GROWTH CHARACTERISTICS OF MARINE PHYTOPLANKTON DETERMINED BY CELL CYCLE PROTEINS: THE CELL CYCLE OF ETHMODISCUS REX (BACILLARIOPHYCEAE) IN THE SOUTHWESTERN NORTH ATLANTIC OCEAN AND CARIBBEAN SEA¹

Lin

Carpenter

1995

Journal of Phycology

View full text Add to dashboard Cite

Ethmodiscus spp. is an important contributor to oceanic tropical‐ooze sediments and thus might be an important transport vehicle of carbon from the ocean surface to sediments. The knowledge of its cell cycle and growth rate, which is still lacking, is necessary to evaluate the importance of Ethmodiscus in nutrient cycling and to solve the discrepancy between its high sedimentary abundance and rarity in the plankton. We used immunofluorescence of a cell cycle protein, prolqerating cell nuclear antigen (PCNA), and DNA‐specific staining to study the progression of the cell cycle and roughly estimate the growth rate for E. rex (Rattray) Wiseman and Hendey in the southwestern North Atlantic Ocean and Caribbean Sea in June 1994 and January 1995. During the cell division cycle, the chloroplasts appeared to synthesize DNA before the nucleus (S phase). Following the S phase, the nucleus moved from one end of the cell toward the center underneath the midline of the girdle band (G2 phase) where it divided (M phase). During a very brief period, the parent cell split and moved apart from the girdle midline, and two new valves were produced (late M phase). The two daughter nuclei apparently remained attached at the joint of the two newly produced valves, where they appeared to be responsible for coordinating the symmetrical formation of the new valves. The morphologically complete daughter cells remained joined for a short period of time before separating into solitary cells whose nucleus was located at one end of the cell. Derived from the phase fraction curves, the duration of the cell cycle phases decreased in the order from G1, S, G2, to M. A conservative estimate of the growth rate in the study area obtained by using PCNA immunostaining was 0.39–0.46 d−1 in June and 0.15 d−1 in January. The validity and implication of the growth rate estimates are discussed.

show abstract

Spatial and Temporal Discontinuities of Biological Processes in Pelagic Surface Waters

Goldman

1988

Toward a Theory on Biological-Physical Interactions in the World Ocean

110

View full text Add to dashboard Cite

Distribution and abundance of the diatom Ethmodiscus rex off the west coast of North America

Cited by 14 publications

References 7 publications

Netplankton Chlorophyll Biomass along 175°E in the Pacific Ocean

Netplankton Chlorophyll Biomass along 175°E in the Pacific Ocean

GROWTH CHARACTERISTICS OF MARINE PHYTOPLANKTON DETERMINED BY CELL CYCLE PROTEINS: THE CELL CYCLE OF ETHMODISCUS REX (BACILLARIOPHYCEAE) IN THE SOUTHWESTERN NORTH ATLANTIC OCEAN AND CARIBBEAN SEA¹

Spatial and Temporal Discontinuities of Biological Processes in Pelagic Surface Waters

Contact Info

Product

Resources

About

Distribution and abundance of the diatom Ethmodiscus rex off the west coast of North America

Cited by 14 publications

References 7 publications

Netplankton Chlorophyll Biomass along 175°E in the Pacific Ocean

Netplankton Chlorophyll Biomass along 175°E in the Pacific Ocean

GROWTH CHARACTERISTICS OF MARINE PHYTOPLANKTON DETERMINED BY CELL CYCLE PROTEINS: THE CELL CYCLE OF ETHMODISCUS REX (BACILLARIOPHYCEAE) IN THE SOUTHWESTERN NORTH ATLANTIC OCEAN AND CARIBBEAN SEA1

Spatial and Temporal Discontinuities of Biological Processes in Pelagic Surface Waters

Contact Info

Product

Resources

About

GROWTH CHARACTERISTICS OF MARINE PHYTOPLANKTON DETERMINED BY CELL CYCLE PROTEINS: THE CELL CYCLE OF ETHMODISCUS REX (BACILLARIOPHYCEAE) IN THE SOUTHWESTERN NORTH ATLANTIC OCEAN AND CARIBBEAN SEA¹