Vertical distribution of mesoplankton at the northern margin of the North Atlantic gyre in June-August 2001


Autoria(s): Vinogradov, Georgy M; Vinogradov, Mikhail E; Musaeva, Eteri I
Cobertura

MEDIAN LATITUDE: 44.704444 * MEDIAN LONGITUDE: -34.158889 * SOUTH-BOUND LATITUDE: 41.733333 * WEST-BOUND LONGITUDE: -49.916667 * NORTH-BOUND LATITUDE: 48.100000 * EAST-BOUND LONGITUDE: -16.150000 * DATE/TIME START: 2001-06-10T00:00:00 * DATE/TIME END: 2001-08-25T00:00:00

Data(s)

20/07/2002

Resumo

Vertical distribution of mesoplankton was studied over a single season in 2001 at two sites in the western and eastern parts of the northern margin of the North Atlantic gyre. Plankton was sampled both with use of BR 113/140 net and observed from the Mir deep-sea manned submersible. In near-slope waters southeast of Newfoundland (Titanic Polygon) there occurred intensive interaction between subtropical and sub-polar waters and plankton communities. The subtropical gyre community being more mature from the succession viewpoint created a ''net'' of carnivores and scavengers (shrimp and smaller animals) feeding plankton supplied from the north and thus increasing their own biomass. Due to features of hydrological conditions in 2001 in contrast to other years, the plankton supplied from the north was dominated by small copepods, while abundance of larger Calanus hyperboreus was small. Perhaps due to this fact, abundance of macroplanktonic shrimp decreased, while abundance of mesoplanktonic carnivores (Themisto, Sagitta, and Pareuchaeta) increased. In East Atlantic, within the Porcupine abyssal plain (Bismark Polygon) contrasts in frontal boundaries decreased and community interaction became less expressed. While vertical distribution of plankton at Titanic Polygon was characterized by a series of extraordinary features, distribution at Bismark Polygon was much more ordinary.

Formato

application/zip, 2 datasets

Identificador

https://doi.pangaea.de/10.1594/PANGAEA.763315

doi:10.1594/PANGAEA.763315

Idioma(s)

en

Publicador

PANGAEA

Direitos

CC-BY: Creative Commons Attribution 3.0 Unported

Access constraints: unrestricted

Fonte

Supplement to: Vinogradov, Georgy M; Vinogradov, Mikhail E; Musaeva, Eteri I (2002): Features of the vertical distribution of net mesoplankton at the northern margin of the North Atlantic gyre (June-August 2001). Translated from Okeanologiya, 2002, 42(4), 518-526, Oceanology, 42(4), 494-501

Palavras-Chave #A. clausi; Acanthephyra, biomass; Acanthephyra, biomass per area; Acanthephyra BA; Acanthephyra biom; Acartia clausi; Akademik Mstislav Keldysh; AMK46; AMK46-4149; AMK46-4186-89; AMK46-4236-40; Archive of Ocean Data; ARCOD; Bismark Polygon, Northeast Atlantic; C. finmarchicus BA; C. finmarchicus biom; C. helgolandicus BA; C. helgolandicus biom; C. hyperboreus biom; Calanus finmarchicus, biomass; Calanus finmarchicus, biomass per area; Calanus helgolandicus, biomass; Calanus helgolandicus, biomass per area; Calanus hyperboreus, biomass; Calculated; Chaetognatha, biomass per area; Chaetognatha BA; Counting; Depth, bottom/max; Depth, top/min; DEPTH, water; Depth bot; Depth top; Depth water; Event; M. longa BA; M. longa biom; Mesoplankton, biomass; Mesoplankton, biomass per area; Mesopl BA; Mesopl biom; Metridia, biomass; Metridia, biomass per area; Metridia BA; Metridia biom; Metridia longa, biomass; Metridia longa, biomass per area; Pareuchaeta, biomass; Pareuchaeta, biomass per area; Pareuchaeta BA; Pareuchaeta biom; Plankton net BR 113/140; PN-BR; T. compressa BA; T. compressa biom; Themisto compressa, biomass; Themisto compressa, biomass per area; Titanic Polygon, Northwest Atlantic; with admixture of Calanus finmarchicus
Tipo

Dataset