Meal Sizes and Feeding Rates of Christmas Shearwaters and Phoenix Petrels on Christmas Island, Central Pacific Ocean

Information on environmental conditions shaping archaeal communities thriving at the seafloor of the central Pacific Ocean is limited. The present study was conducted to investigate the diversity, composition, and function of both entire and potentially active archaeal communities within Pacific deep-sea sediments. For this purpose, sediment samples were taken along the 180° meridian of the central Pacific Ocean. Community composition and diversity were assessed by Illumina tag sequencing targeting archaeal 16S rRNA genes and transcripts. Archaeal communities were dominated by CandidatusNitrosopumilus(Thaumarchaeota) and other members of theNitrosopumilaceae(Thaumarchaeota), but higher relative abundances of the Marine Group II (Euryarchaeota) were observed in the active compared to the entire archaeal community. The composition of the entire and the active archaeal communities was strongly linked to primary production (chlorophyll content), explaining more than 40% of the variance. Furthermore, we found a strong correlation of the entire archaeal community composition to latitude and silicic acid content, while the active community was significantly correlated with primary production and ferric oxide content. We predicted functional profiles from 16S rRNA data to assess archaeal community functions. Latitude was significantly correlated with functional profiles of the entire community, whereas those of the active community were significantly correlated with nitrate and chlorophyll content. The results of the present study provide first insights into benthic archaeal communities in the Pacific Ocean and environmental conditions shaping their diversity, distribution, and function. Additionally, they might serve as a template for further studies investigating archaea colonizing deep-sea sediments.

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The Birds of Fanning Island, Central Pacific Ocean

The Condor ◽

10.2307/1363030 ◽

1925 ◽

Vol 27 (5) ◽

pp. 185-196 ◽

Cited By ~ 8

Author(s):

Harold Kirby,

Keyword(s):

Pacific Ocean ◽

Central Pacific ◽

Central Pacific Ocean

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Intraspecific variability in the life histories of endemic coral-reef fishes between photic and mesophotic depths across the Central Pacific Ocean

Coral Reefs ◽

10.1007/s00338-017-1559-8 ◽

2017 ◽

Vol 36 (2) ◽

pp. 663-674 ◽

Cited By ~ 4

Author(s):

M. S. Winston ◽

B. M. Taylor ◽

E. C. Franklin

Keyword(s):

Coral Reef ◽

Pacific Ocean ◽

Life Histories ◽

Intraspecific Variability ◽

Reef Fishes ◽

Coral Reef Fishes ◽

Central Pacific ◽

Central Pacific Ocean

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The structure of tuna access agreements in the Western and Central Pacific Ocean: Lessons for Vessel Day Scheme planning

Marine Policy ◽

10.1016/j.marpol.2010.02.004 ◽

2010 ◽

Vol 34 (5) ◽

pp. 979-987 ◽

Cited By ~ 22

Author(s):

Elizabeth Havice

Keyword(s):

Pacific Ocean ◽

Central Pacific ◽

Central Pacific Ocean

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Coasean Approaches to Ending Overfishing: Bigeye Tuna Conservation in the Western and Central Pacific Ocean

SSRN Electronic Journal ◽

10.2139/ssrn.3692157 ◽

2020 ◽

Author(s):

Daniel Ovando ◽

Gary Libecap ◽

Katherine Millage ◽

Lennon Thomas

Keyword(s):

Pacific Ocean ◽

Bigeye Tuna ◽

Central Pacific ◽

Central Pacific Ocean

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The Relationship between Equatorial Mixed Rossby–Gravity and Eastward Inertio-Gravity Waves. Part II

Journal of the Atmospheric Sciences ◽

10.1175/jas-d-15-0231.1 ◽

2016 ◽

Vol 73 (5) ◽

pp. 2147-2163 ◽

Cited By ~ 7

Author(s):

Juliana Dias ◽

George N. Kiladis

Keyword(s):

Pacific Ocean ◽

Gravity Waves ◽

Companion Paper ◽

Empirical Orthogonal Functions ◽

Central Pacific ◽

The West ◽

Orthogonal Functions ◽

Central Pacific Ocean ◽

The Relationship ◽

Zonal Propagation

Abstract Space–time spectral analysis of tropical cloudiness data shows strong evidence that convectively coupled n = 0 mixed Rossby–gravity waves (MRGs) and eastward inertio-gravity waves (EIGs) occur primarily within the western/central Pacific Ocean. Spectral filtering also shows that MRG and EIG cloudiness patterns are antisymmetric with respect to the equator, and they propagate coherently toward the west and east, respectively, with periods between 3 and 5 days, in agreement with Matsuno’s linear shallow-water theory. In contrast to the spectral approach, in a companion paper it has been shown that empirical orthogonal functions (EOFs) of 2–6-day-filtered cloudiness data within the tropical Pacific Ocean also suggest an antisymmetric pattern, but with the leading EOFs implying a zonally standing but poleward-propagating oscillation, along with the associated tropospheric flow moving to the west. In the present paper, these two views are reconciled by applying an independent approach based on a tracking method to assess tropical convection organization. It is shown that, on average, two-thirds of MRG and EIG events develop independently of one another, and one-third of the events overlap in space and time. This analysis also verifies that MRG and EIG cloudiness fields tend to propagate meridionally away from the equator. It is demonstrated that the lack of zonal propagation implied from the EOF analysis is likely due to the interference between eastward- and westward-propagating disturbances. In addition, it is shown that the westward-propagating circulation associated with the leading EOF is consistent with the expected theoretical behavior of an interference between MRGs and EIGs.

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Peer Review #2 of "Weight–length relationships and Fulton’s condition factors of skipjack tuna (Katsuwonus pelamis) in the western and central Pacific Ocean (v0.1)"

10.7287/peerj.758v0.1/reviews/2 ◽

2015 ◽

Author(s):

M Soto-Jimenez

Keyword(s):

Pacific Ocean ◽

Peer Review ◽

Skipjack Tuna ◽

Central Pacific ◽

Katsuwonus Pelamis ◽

Central Pacific Ocean

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Ship- and island-based soundings from the 2016 El Niño Rapid Response (ENRR) field campaign

10.5194/essd-2018-7 ◽

2018 ◽

Cited By ~ 1

Author(s):

Leslie M. Hartten ◽

Christopher J. Cox ◽

Paul E. Johnston ◽

Daniel E. Wolfe ◽

Scott Abbott ◽

...

Keyword(s):

El Niño ◽

El Nino ◽

Rapid Response ◽

Public Access ◽

Central Pacific ◽

Quasi Biennial Oscillation ◽

East Central ◽

Field Campaign ◽

Central Pacific Ocean ◽

Christmas Island

Abstract. As the 2015/2016 El Niño was gathering strength in late 2015, scientists at the Earth System Research Laboratory's Physical Sciences Division proposed and led the implementation of NOAA's El Niño Rapid Response (ENRR) Field Campaign. ENRR observations included wind and thermodynamic profiles of the atmosphere over the near-equatorial east-central Pacific Ocean, many of which were collected from two field sites and transmitted in near-real time for inclusion in global forecasting models. From 26 January to 28 March 2016, twice-daily rawinsonde observations were made from Kiritimati (pronounced Christmas) Island (2.0°N, 157.4°E; call sign CXENRR). From 16 February to 16 March 2016, three to eight radiosondes were launched each day from the NOAA Ship Ronald H. Brown (allocated call sign WTEC) as it travelled southeast from Hawaii to service Tropical Atmosphere Ocean (TAO) buoys along longitudes 140°W and 125°W and then north to San Diego, California. Both the rapid and the remote nature of these deployments created particular difficulties in collecting and disseminating the soundings; these are described together with the methods used to reprocess the data after the field campaign finished. The reprocessed and lightly quality-controlled data have been put into an easy-to-read text format, qualifying them to be termed Level 2 soundings. They are archived and freely available for public access at NOAA's National Centers for Environmental Information (NCEI) in the form of two separate data sets: one consisting of 125 soundings from Kiritimati Island (doi:10.7289/V55Q4T5K), the other of 193 soundings from the NOAA Ship Ronald H. Brown (doi:10.7289/V5X63K15). Of the Kiritimati soundings, 94 % reached the tropopause and 88 % reached 40 hPa, while 89 % of the ship's soundings reached the tropopause and 87 % reached 40 hPa. The soundings captured the repeated advance and retreat of the ITCZ at Kiritimati, a variety of marine tropospheric environments encountered by the ship, and lower-stratospheric features of the 2015–2016 QBO (quasi-biennial oscillation), all providing a rich view of the local atmosphere's response to the east-central Pacific's extremely warm waters during the 2015/16 El Niño.

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