BULA 2

Name: BULA 2
Start: 2002-03-12
End: 2002-03-19
Location: Southwest Pacific Ocean (140W)

Type	Oceanographic cruise
Set	This cruise is part of the set BULA
Ship	Alis
Ship owner	IRD
Dates	12/03/2002 - 19/03/2002
Chief scientist(s)	TORRETON Jean-Pascal
	IRD CENTRE DE NOUMEA 101 promenade Roger Laroque BP A5 98848 NOUMEA CEDEX (+687) 26 10 00 nouvelle-caledonie@ird.fr https://nouvelle-caledonie.ird.fr/
DOI	10.17600/2100040
Objective	Mission to characterize the non-living environment and initial estimates of plankton biomass and activity in the lagoon surrounding the town of Suva at the end of the warm season. Initial estimates of benthic activity. Characterizing physical-chemical distribution in the lagoon's waters. Distribution of bacterial biomass, bacterial production, primary production under constant light (300 microE) and of chloropigments in 3 size classes (total, >2, >10 micron), abundance distribution of picoplankton (flow cytometry), microphytoplankton (inverted microscopy), protists (ciliates, inverted microscopy) and bacterial diversity (T-RFLP). Determining concentrations of dissolved metals. Distribution of radionuclides (210Pb/210Po, 234Th/238U) in particulate matter, zooplankton and faecal pellets from zooplankton, in order to specify the respective importance of geochemical and biological pathways for particulate transfer.

Sea/Ocean

Southwest Pacific Ocean (140W)

Ports

Port of departure : Suva (Fiji)

Port of return : Suva (Fiji)

Scientific Authority

IRD CENTRE DE NOUMEA

101 promenade Roger Laroque

BP A5

98848 NOUMEA CEDEX

(+687) 26 10 00

nouvelle-caledonie@ird.fr

https://nouvelle-caledonie.ird.fr/

Participating bodie(s)

IRD (Centre de Noumea), ANSTO (Australie)

Discipline(s)

PHYSICAL OCEANOGRAPHY
BIOLOGICAL OCEANOGRAPHY
CHEMICAL OCEANOGRAPHY
ENVIRONMENT

Code	Label	Quantity	PI
B01	Primary productivity Mesures a 300 microE en 3 classes de taille totale,>2 et >10 microm	40 stations	JACQUET Severine
B02	Phytoplankton pigments (eg chloroph 40 st. en 3 classes de taille (totale,>2,>10microm),14 st. Chl.a total	56 stations	CHIFFLET Sandrine
B06	Dissolved organic matter (inc DOC) NOD, POD	56	CHIFFLET Sandrine
B07	Pelagic bacteria/micro-organisms Abond. & prod bacter. (40 st).Diversite bacterienne par T-RFLP	38	JACQUET Severine
B08	Phytoplankton Picoplanct/cytometrie en flux,nano/micro-phytopl. par microscopie inv.	38	TORRETON Jean-Pascal
B09	Zooplankton Pour analyse isotopique du zoo et des pelotes fecales	2	JEFFREE Ross
B16	Benthic bacteria/micro-organisms Respiration benthique, diversite par T-RFLP	9	PRINGAULT Olivier
B71	Particulate organic matter (inc POC C,N,P	56	CHIFFLET Sandrine
G04	Core soft bottom	13 cores	PRINGAULT Olivier
H09	Water bottle stations	56 stations	TORRETON Jean-Pascal
H10	CTD stations Profils CTD	55 stations	PANCHE Jean-Yves
H17	Optics (eg underwater light levels) Profils PAR,fluoresence in vivo,nephelometrie	55 stations	TORRETON Jean-Pascal
H22	Phosphate	55 stations	CHIFFLET Sandrine
H23	Total - P	-	CHIFFLET Sandrine
H24	Nitrate	56 stations	CHIFFLET Sandrine
H26	Silicate	56 stations	CHIFFLET Sandrine
H27	Alkalinity	40 stations	TORRETON Jean-Pascal
H32	Isotopes 210Pb/210Po, 234Th/238U	3 stations	SZYMCZAK Ron
H75	Total - N	56 stations	CHIFFLET Sandrine
H76	Ammonia	56 stations	CHIFFLET Sandrine
P02	Trace metals Dissous et particulaires	26 stations	MORETON Benjamin

Summary of measurements

-CTD (SBE19) profiles using PAR sensors, turbidity and fluorescence in situ.
- Water samples were taken to analyze dissolved nutrients.
- Water samples and filtration to analyze particulate matter.
- Water samples to analyze dissolved metals (retention on water column).
-Water samples and filtering for isotope analyses (210Pb/210Po, 234Th/238U).
-Sequential filtering (200, 20, 2 and 0.2 micron) in situ for isotope analyses (210Pb/210Po, 234Th/238U).
-Zooplankton samples for isotope analyses (210Pb/210Po, 234Th/238U) of organisms and faecal pellets.
- Water samples to analyze plankton communities in terms of abundance (bacteria, autotrophic picoplankton, nano- and microphytoplankton, protists) and diversity (bacteria).
-Water samples and analysis of bacterial and plankton primary production (total, >2, >10 m, under constant light 300 microE).
-Sediment samples and analyses of benthic primary production and respiration.

Location map

Joint document(s)

Data managed by SISMER

Bibliography

Publications

von Schuckmann Karina, Le Traon Pierre-Yves , Smith Neville, Pascual Ananda, Djavidnia Samuel, Brasseur Pierre, Grégoire Marilaure (2022). Copernicus Ocean State Report. Journal Of Operational Oceanography, 15(sup1), 1-220. Publisher's official version : https://doi.org/10.1080/1755876X.2022.2095169 , Open Access version : https://archimer.ifremer.fr/doc/00883/99470/

Koliyavu Timoci, Martias Chloe, Singh Awnesh, Mounier Stéphane, Gérard Philippe, Dupouy Cecile (2021). In-Situ Variability of DOM in Relation with Biogeochemical and Physical Parameters in December 2017 in Laucala Bay (Fiji Islands) after a Strong Rain Event. Journal Of Marine Science And Engineering, 9(3), 241 (22p.). Publisher's official version : https://doi.org/10.3390/jmse9030241 , Open Access version : https://archimer.ifremer.fr/doc/00682/79372/