Seasonal Reversal of the Near‐Surface Chlorophyll Response to the Presence of Mesoscale Eddies in the South Pacific Subtropical Countercurrent

2020 ◽  
Vol 125 (3) ◽  
Author(s):  
Seth Travis ◽  
Bo Qiu
Keyword(s):  
Mesoscale Eddies ◽  
South Pacific ◽  
The South ◽  
Near Surface ◽  
Subtropical Countercurrent

scholarly journals Uncovering the Composition and Diversity of Pelagic Copepods in the Oligotrophic Blue Water of the South Pacific Subtropical Gyre

2021 ◽  
Vol 8 ◽  
Author(s):  
Johanna Medellín-Mora ◽  
Rubén Escribano ◽  
Andrea Corredor-Acosta ◽  
Pamela Hidalgo ◽  
Wolfgang Schneider
Keyword(s):  
Coastal Upwelling ◽  
Mesoscale Eddies ◽  
South Pacific ◽  
Subtropical Gyre ◽  
The South ◽  
Austral Spring ◽  
Near Surface ◽  
Shallow Habitat ◽  
Basin Scale ◽  
Pelagic Copepods

The subtropical gyres occupy approximately 40% of the surface of the Earth and are widely recognized as oligotrophic zones. Among them, the South Pacific subtropical gyre (SPSG) shows the lowest chlorophyll-a levels (0.02–0.04 μgL–1), the deepest nutricline (>200 m) and euphotic zone (∼160 m), and the lowest rates of nitrogen fixation. The zooplankton community is poorly known in the SPSG. We report a study focused on the composition and distribution of pelagic copepods within the gyre so as to uncover the diversity and habitat conditions of this special community. Therefore, during the austral spring of 2015, an oceanographic cruise was conducted across the eastern side of the SPSG. Physical and chemical variables were measured in the upper 1000 m, while zooplankton samples were collected by means of vertically stratified hauls using a multiple net sampler for five layers (0–800 m). Satellite data were also used to assess near-surface phytoplankton biomass (Chl-a) and physical-dynamics conditions during the cruise, and 121 species of copepods were identified, which belonged to five taxonomic orders, 24 families, and 50 genera. Calanoida and Cyclopoida were the most frequent orders, containing 57% and 38% of species, respectively, whereas Harpacticoida and Mormonilloida contained 2% of species each, and Siphonostomatoida contained 1% of species. The vertical distribution of copepods revealed an ecological zonation linked to a strongly stratified water column, such that three different vertical habitats were defined: shallow (0–200 m), intermediate (200–400 m), and deep (400–800 m). Both the abundance and diversity of copepods were greater in the shallow habitat and were strongly associated with water temperature, whereas copepods in the subsurface layers subsisted with relatively low oxygen waters (2–3 mL O2 L–1) and presumably originated at the Chilean upwelling zone, being transported offshore by mesoscale eddies. Furthermore, the analysis of species composition revealed a marked dominance of small-sized copepods, which may play a key role in nutrient recycling under an oligotrophic condition, as inferred from their mostly omnivorous feeding behavior. Our findings also suggested a potentially high endemism within the gyre, although basin-scale circulation and mesoscale eddies, traveling from the coastal upwelling zone and transporting plankton, can also influence the epipelagic fauna.

Culture and leadership: Project GLOBE in the South Pacific

2009 ◽  
Author(s):  
Anthony R. Paquin ◽  
Reinout E. de Vries ◽  
Raghuvar D. Pathak ◽  
Rafia Naz
Keyword(s):  
South Pacific ◽  
The South

Tourism Development in the South Pacific: The Cases of Nauru and Tuvalu

2019 ◽  
Vol 39 (1) ◽  
Author(s):  
Nick Towner ◽  
Semisi Taumoepeau
Keyword(s):  
Swot Analysis ◽  
Tourism Development ◽  
Geographic Location ◽  
South Pacific ◽  
The South ◽  
South Pacific Ocean ◽  
Economic Survival ◽  
Processing Centre ◽  
Remote Island ◽  
The Impact

Abstract Tuvalu and Nauru are isolated developing island nations located in the South Pacific Ocean. In contrast to the established larger Pacific destinations such as Fiji and Tahiti, the tourism industries on both Tuvalu and Nauru are in their infancy. Tourism development in these remote island nations faces a myriad of challenges which include a lack of infrastructure, environmental susceptibility, economic vulnerability, difficulties with access and considerable distances from major tourist markets. This paper reviews tourism on Tuvalu and Nauru and evaluates their current situation regarding potential tourism development through workshops with relevant stakeholders, surveys and subsequent SWOT analysis. The results of the paper outlined a large number of challenges faced by Tuvalu and Nauru due to their geographic location but also highlighted that both Islands possess fascinating and unique features that have the potential to attract niche tourism markets. A key finding of this paper is that the tourism stimulus or potential attraction can also be the chief threat to the islands’ economic survival hence the two edges of the sword. Further research is required to assess the effect of the withdrawal of the Refugee Processing Centre on Nauru’s economy and to evaluate the impact of climate change on Tuvalu’s society and potential adaption strategies.

Characterising essential breeding habitat for whales informs the development of large-scale Marine Protected Areas in the South Pacific

2016 ◽  
Vol 548 ◽  
pp. 263-275 ◽  
Author(s):  
RE Lindsay ◽  
R Constantine ◽  
J Robbins ◽  
DK Mattila ◽  
A Tagarino ◽  
...  
Keyword(s):  
Protected Areas ◽  
Marine Protected Areas ◽  
Large Scale ◽  
South Pacific ◽  
Breeding Habitat ◽  
The South

: Some Dependent Peoples of the South Pacific . Linden A. Mander.

1955 ◽  
Vol 24 (7) ◽  
pp. 112-112
Author(s):  
Ward H. Goodenough
Keyword(s):  
South Pacific ◽  
The South

Overview of the Development and Modern Landscape of Marine Pearl Culture in the South Pacific

2019 ◽  
Vol 38 (3) ◽  
pp. 499 ◽  
Author(s):  
William Johnston ◽  
Damian Hine ◽  
Paul C. Southgate
Keyword(s):  
South Pacific ◽  
The South ◽  
Modern Landscape

Evaluasi Awal Ketahanan Beberapa Kultivar Talas Terhadap Serangan Kumbang Talas, Papuana spp. (Coleoptera : Scarabaeidae)

Agrotek ◽  
2018 ◽  
Vol 2 (3) ◽  
Author(s):  
Alexander Yaku
Keyword(s):  
South Pacific ◽  
Insect Behavior ◽  
Natural Resistance ◽  
The South ◽  
White Colour ◽  
Selection Of

Taro beetles, Papuana spp., (Coleoptera: Scarabaeidae) are pests of taro (Colozasia esculenta) and a number of other plants in the South Pacific regions including Papua. The pest have become serious threat for taro farmers because it damage corm resulting in the loss of production. To control the taro beetle, 104 taro cultivars were evaluated for their natural resistance. The experiment was conducted in the Unipa Farm located in East Amban. Results of research shows that there are three cultivars being highly resistance and 36 cultivars being only resistance. The taro with white colour of corm flesh seems to be a non-preference factor that alter insect behavior, resulting in the selection of alternate taro cultivars.

Carbon monoxide in the South Pacific Ocean

Tellus ◽  
1974 ◽  
Vol 26 (1-2) ◽  
pp. 136-142 ◽  
Author(s):  
J. W. Swinnerton ◽  
R. A. Lamontagne
Keyword(s):  
Carbon Monoxide ◽  
Pacific Ocean ◽  
South Pacific ◽  
The South ◽  
South Pacific Ocean
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