![]() R/V Alis leaving Nouméa port in 2021 for the Warmalis1 cruise. After more than 30 years of loyal service, the Alis will retire at the end of this mission. This campaign has the particularity of being the very last campaign of the Alis, a ship of the French oceanographic fleet. In the absence of air connections to Kiritimati due to the Covid pandemic, the scientific team will remain on board the boat which will head back to Noumea after resupply with the scientific team disembarking in Samoa, 6 days after resupply. We should reach Kiritimati at the end of September, beginning of October for resupply. Starting on 14 September, the campaign will last 21 days during which 15 sampling stations will be carried out if the weather conditions allow it. Secondary production (zooplankton, micronekton) will be measured with acoustic (TAPS, WBAT, S-ADCP, EK60) and net sampling of zooplankton and micronekton. To characterise physico-chemical conditions and primary production, we will measure temperature, salinity, oxygen, fluorescence, light, currents, nutrients, photosynthetic pigments, phytoplankton abundance, primary production, phytoplanktonic communities. The Warmalis cruises are multidisciplinary, and we will collect seawater physical and chemical data as well as data on zooplankton and micronekton. Our goal is to bring scientific knowledge for a sustainable management of the pelagic resources by understanding the functioning of the pelagic ecosystems (from physics to intermediate levels) and by collecting observations to validate and improve ecosystem models used to analyse the tuna resources (SEAPODYM).Įxample of micronekton catch during Warmalis1 with small fish and shrimps commonly eaten by tuna and other top predators. The aim of our project is to fill the important gap in knowledge on the large pelagic ecosystems of the Pacific. tuna, marine mammals, seabirds) which are their predators. Zooplankton and micronekton are components linking the physical/chemical factors of the ocean, which influence their distribution and abundance, with the megafauna (e.g. ![]() Our project will study the mid-trophic levels (zooplankton and micronekton) of the large pelagic ecosystems of the Pacific where more than 50% of the global tuna catches are produced. The objective of the project is to understand the functioning of the pelagic ocean ecosystem and determine its influence on tuna resources in the western and central Pacific region. Pacific tuna harvest strategies and MSEĪfter the success of the Warmalis1 campaign in 2021, despite a complex situation due to the Covid pandemic, SPC, in collaboration with IRD, is continuing its series of WARMALIS campaigns.įor this second campaign, Warmalis2, we will cross the central Pacific Ocean from south to north, starting from Papeete in French Polynesia and working our way northwards through the Kiribati Line Islands to finish our work in international waters.Bycatch Mitigation Information System (BMIS).
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |