Dominance of facultative and obligate oligotrophic bacteria in surface waters above Gunnerus and Astrid Ridge, Antarctic Ocean
Facultative and obligate oligotrophs have been enumerated in March/April 1990 by the MPN-method with 14C-protein hydrolysate as tracer substrate. Obligate (10-3360 cells/ml) and facultative (110-9000 cells/ml) oligotrophs revealed to be the dominant population above Gunnerus Ridge (65°30'-68°S;...
Main Authors: | , , , |
---|---|
Format: | Other/Unknown Material |
Language: | English |
Published: |
PANGAEA
1999
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.746515 https://doi.org/10.1594/PANGAEA.746515 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.746515 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.746515 2024-09-15T17:48:05+00:00 Dominance of facultative and obligate oligotrophic bacteria in surface waters above Gunnerus and Astrid Ridge, Antarctic Ocean Tan, Tjhing Lok Joiris, Claude R Glansdorff, Nicolas Rüger, Hans-Jürgen MEDIAN LATITUDE: -66.192152 * MEDIAN LONGITUDE: 25.869352 * SOUTH-BOUND LATITUDE: -67.735000 * WEST-BOUND LONGITUDE: 8.890000 * NORTH-BOUND LATITUDE: -64.956700 * EAST-BOUND LONGITUDE: 37.460000 * DATE/TIME START: 1990-03-24T18:30:00 * DATE/TIME END: 1990-04-15T18:55:00 1999 application/zip, 18 datasets https://doi.pangaea.de/10.1594/PANGAEA.746515 https://doi.org/10.1594/PANGAEA.746515 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.746515 https://doi.org/10.1594/PANGAEA.746515 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Tan, Tjhing Lok; Joiris, Claude R; Glansdorff, Nicolas; Rüger, Hans-Jürgen (1999): Dominance of oligotrophic bacteria in surface waters above Gunnerus and Astrid Ridge, Antarctic Ocean. Archiv für Hydrobiologie Supplement, 54, 237-253 ANT-VIII/6 Cosmonauts Sea Indian Ocean Lazarev Sea Polarstern PS16 PS16/507 PS16/509 PS16/515 PS16/518 PS16/526 PS16/530 PS16/534 PS16/536 PS16/540 PS16/547 PS16/549 PS16/552 PS16/554 PS16/557 Riiser-Larsen Sea South Atlantic Ocean Water sample WS dataset publication series 1999 ftpangaea https://doi.org/10.1594/PANGAEA.746515 2024-07-24T02:31:20Z Facultative and obligate oligotrophs have been enumerated in March/April 1990 by the MPN-method with 14C-protein hydrolysate as tracer substrate. Obligate (10-3360 cells/ml) and facultative (110-9000 cells/ml) oligotrophs revealed to be the dominant population above Gunnerus Ridge (65°30'-68°S; 31-35°E) at a depth of 25 m compared with eutrophic bacteria (5 to 260 CFU/ml). Above Astrid Ridge (65-68°S; 8-18°E), obligate (0-1100 cells/ml) and facultative oligotrophs (300-9000 cells/ml) were also abundant but not always dominant. Bacterial biomass above Gunnerus Ridge was only between 7.3 and 43.6% of particulate biomass, but biomass of bacteria above Astrid Ridge amounted from 56.9 to >100% of particulate biomass; an exception was station no. PS16/552 with only 22.2% of bacterial biomass. Ratio of bacterial biomass to particulate biomass was negatively correlated with maximal primary production, complementing the view that phytoplankton was the dominant population above Gunnerus Ridge, whereas bacteria predominated above Astrid Ridge. Eutrophic bacteria were also more abundant above Astrid Ridge, with 3 to 6380 CFU/ml. Total bacteria by acridine orange direct counts amounted from 1 x 10**4 to 34.2 x 10**4 cells/ml. Bacterial biomass above Gunnerus Ridge was 1.8 to 10.7, and above Astrid Ridge 5.7 to 13.6 mg C/m*3. Maximal primary production above Gunnerus Ridge was 4.5 to 11.0, and above Astrid Ridge 2.3 to 3.5 mg C/m**3/d. Other/Unknown Material Antarc* Antarctic Antarctic Ocean Cosmonauts sea Lazarev Sea Riiser-Larsen Sea South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(8.890000,37.460000,-64.956700,-67.735000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
ANT-VIII/6 Cosmonauts Sea Indian Ocean Lazarev Sea Polarstern PS16 PS16/507 PS16/509 PS16/515 PS16/518 PS16/526 PS16/530 PS16/534 PS16/536 PS16/540 PS16/547 PS16/549 PS16/552 PS16/554 PS16/557 Riiser-Larsen Sea South Atlantic Ocean Water sample WS |
spellingShingle |
ANT-VIII/6 Cosmonauts Sea Indian Ocean Lazarev Sea Polarstern PS16 PS16/507 PS16/509 PS16/515 PS16/518 PS16/526 PS16/530 PS16/534 PS16/536 PS16/540 PS16/547 PS16/549 PS16/552 PS16/554 PS16/557 Riiser-Larsen Sea South Atlantic Ocean Water sample WS Tan, Tjhing Lok Joiris, Claude R Glansdorff, Nicolas Rüger, Hans-Jürgen Dominance of facultative and obligate oligotrophic bacteria in surface waters above Gunnerus and Astrid Ridge, Antarctic Ocean |
topic_facet |
ANT-VIII/6 Cosmonauts Sea Indian Ocean Lazarev Sea Polarstern PS16 PS16/507 PS16/509 PS16/515 PS16/518 PS16/526 PS16/530 PS16/534 PS16/536 PS16/540 PS16/547 PS16/549 PS16/552 PS16/554 PS16/557 Riiser-Larsen Sea South Atlantic Ocean Water sample WS |
description |
Facultative and obligate oligotrophs have been enumerated in March/April 1990 by the MPN-method with 14C-protein hydrolysate as tracer substrate. Obligate (10-3360 cells/ml) and facultative (110-9000 cells/ml) oligotrophs revealed to be the dominant population above Gunnerus Ridge (65°30'-68°S; 31-35°E) at a depth of 25 m compared with eutrophic bacteria (5 to 260 CFU/ml). Above Astrid Ridge (65-68°S; 8-18°E), obligate (0-1100 cells/ml) and facultative oligotrophs (300-9000 cells/ml) were also abundant but not always dominant. Bacterial biomass above Gunnerus Ridge was only between 7.3 and 43.6% of particulate biomass, but biomass of bacteria above Astrid Ridge amounted from 56.9 to >100% of particulate biomass; an exception was station no. PS16/552 with only 22.2% of bacterial biomass. Ratio of bacterial biomass to particulate biomass was negatively correlated with maximal primary production, complementing the view that phytoplankton was the dominant population above Gunnerus Ridge, whereas bacteria predominated above Astrid Ridge. Eutrophic bacteria were also more abundant above Astrid Ridge, with 3 to 6380 CFU/ml. Total bacteria by acridine orange direct counts amounted from 1 x 10**4 to 34.2 x 10**4 cells/ml. Bacterial biomass above Gunnerus Ridge was 1.8 to 10.7, and above Astrid Ridge 5.7 to 13.6 mg C/m*3. Maximal primary production above Gunnerus Ridge was 4.5 to 11.0, and above Astrid Ridge 2.3 to 3.5 mg C/m**3/d. |
format |
Other/Unknown Material |
author |
Tan, Tjhing Lok Joiris, Claude R Glansdorff, Nicolas Rüger, Hans-Jürgen |
author_facet |
Tan, Tjhing Lok Joiris, Claude R Glansdorff, Nicolas Rüger, Hans-Jürgen |
author_sort |
Tan, Tjhing Lok |
title |
Dominance of facultative and obligate oligotrophic bacteria in surface waters above Gunnerus and Astrid Ridge, Antarctic Ocean |
title_short |
Dominance of facultative and obligate oligotrophic bacteria in surface waters above Gunnerus and Astrid Ridge, Antarctic Ocean |
title_full |
Dominance of facultative and obligate oligotrophic bacteria in surface waters above Gunnerus and Astrid Ridge, Antarctic Ocean |
title_fullStr |
Dominance of facultative and obligate oligotrophic bacteria in surface waters above Gunnerus and Astrid Ridge, Antarctic Ocean |
title_full_unstemmed |
Dominance of facultative and obligate oligotrophic bacteria in surface waters above Gunnerus and Astrid Ridge, Antarctic Ocean |
title_sort |
dominance of facultative and obligate oligotrophic bacteria in surface waters above gunnerus and astrid ridge, antarctic ocean |
publisher |
PANGAEA |
publishDate |
1999 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.746515 https://doi.org/10.1594/PANGAEA.746515 |
op_coverage |
MEDIAN LATITUDE: -66.192152 * MEDIAN LONGITUDE: 25.869352 * SOUTH-BOUND LATITUDE: -67.735000 * WEST-BOUND LONGITUDE: 8.890000 * NORTH-BOUND LATITUDE: -64.956700 * EAST-BOUND LONGITUDE: 37.460000 * DATE/TIME START: 1990-03-24T18:30:00 * DATE/TIME END: 1990-04-15T18:55:00 |
long_lat |
ENVELOPE(8.890000,37.460000,-64.956700,-67.735000) |
genre |
Antarc* Antarctic Antarctic Ocean Cosmonauts sea Lazarev Sea Riiser-Larsen Sea South Atlantic Ocean |
genre_facet |
Antarc* Antarctic Antarctic Ocean Cosmonauts sea Lazarev Sea Riiser-Larsen Sea South Atlantic Ocean |
op_source |
Supplement to: Tan, Tjhing Lok; Joiris, Claude R; Glansdorff, Nicolas; Rüger, Hans-Jürgen (1999): Dominance of oligotrophic bacteria in surface waters above Gunnerus and Astrid Ridge, Antarctic Ocean. Archiv für Hydrobiologie Supplement, 54, 237-253 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.746515 https://doi.org/10.1594/PANGAEA.746515 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.746515 |
_version_ |
1810289013514305536 |