Results 121 to 130 of about 9,559 (293)

A Multi‐Basin Calibration of Magnetofossils as a Quantitative Proxy for Bottom Water Oxygenation

Geophysical Research Letters
Magnetofossils, produced by magnetotactic bacteria, are widespread in marine sediments and are thought to be linked to oxygen concentrations. Until recently, their applications as a quantitative proxy for bottom water oxygen (BWO) are limited due to the ...
Rong Huang, Liao Chang, Shengfa Liu, Jimin Yu, Wanyi Lu, Jianghui Du, Babette A. A. Hoogakker, Masanobu Yamamoto, Keiji Horikawa, Yuhji Yamamoto, Yusuke Okazaki, Pengfei Xue, Qishun Sun, Yanting Lin, Xuefa Shi, Somkiat Khokiattiwong, Narumol Kornkanitnan   +16 more
doaj   +1 more source

Sedimentological survey by the icebreaker Shirase during JARE-61

Antarctic Record
The first systematic sediment survey by the icebreaker Shirase (AGB-5003) was conducted during the 61st Japanese Antarctic Research Expedition (JARE-61).
Takuya Itaki, Yuki Tokuda, Takeshige Ishiwa, Satoshi Sasaki, Yusuke Suganuma, Shigeru Aoki   +5 more
doaj   +1 more source

Intercomparison of carbon‐13 and carbon‐14 tracer approaches for estimating marine calcification and net primary production

Limnology and Oceanography: Methods, EarlyView.
Abstract Accurate measurements of phytoplankton net primary production (NPP) and calcification are essential for quantifying marine carbon cycling, yet in situ calcification rates remain poorly constrained. We compared 13C‐ and 14C‐based tracer methods for NPP in laboratory cultures of the diatom Chaetoceros tenuissimus and the coccolithophore ...
Chloe L. Smith, Austin Grubb, Kay D. Bidle, Kimberlee Thamatrakoln, Adam V. Subhas   +4 more
wiley   +1 more source

Data Sharing Effect on Article Citation Rate in Paleoceanography

, 2014
The validation of scientific results requires reproducible methods and data. Often, however, data sets supporting research articles are not openly accessible and interlinked. This analysis tests whether open sharing and linking of supporting data through
Jonathan Sears (651636)
core   +1 more source

Is DNA metabarcoding an option for formaldehyde‐preserved zooplankton time series?

Limnology and Oceanography: Methods, EarlyView.
Abstract The recovery of amplifiable DNA from formaldehyde‐fixed (FF) zooplankton samples has long been considered problematic, but advances in degraded‐DNA retrieval have renewed interest in FF samples. To access the information stored in long‐term zooplankton time series, we evaluated methods for extracting amplifiable DNA from community samples ...
Aitor Albaina, Anders Lanzén, Irati Miguel, Fernando Rendo, María Santos   +4 more
wiley   +1 more source

Contribution of ultrafine particles to alkalinity in a limestone‐treated waterbody

Limnology and Oceanography: Methods, EarlyView.
Abstract While it is well recognized that suspended particles can bias titration‐based total alkalinity (TA), whether addition of minerals for alkalinity enhancement introduces systematic TA artifacts remains poorly quantified. To address this gap, we quantified the contribution of ultrafine particles (< 0.2 μm) to TA titration introduced by limestone (
Teresa G. Schwemmer, Fiona Teevan‐Kamhawi, Hongjie Wang   +2 more
wiley   +1 more source

Method‐dependent differences in zooplankton abundance and size metrics: Microscopy vs. ZooScan

Limnology and Oceanography: Methods, EarlyView.
Abstract Image‐based approaches such as ZooScan are increasingly used for high‐throughput zooplankton monitoring. However, quantitative evaluations of methodological differences relative to conventional microscopy remain limited. In this study, zooplankton abundance and size‐based metrics obtained from microscopy and ZooScan image analysis were ...
Young Seok Jeong, Min‐Chul Jang, Min Ho Seo, Dong‐Hun Lee, Ho Young Soh   +4 more
wiley   +1 more source

Regional Fluctuations in the Eastern Tropical North Pacific Oxygen Minimum Zone during the Late Holocene

Oceans
This study presents a high-resolution record of δ15Nsed, which serves as a proxy for water column denitrification and oxygen minimum zone (OMZ) intensity, from the Soledad Basin in the Eastern Tropical North Pacific OMZ.
Caitlin E. Tems, Eric Tappa
doaj   +1 more source

The MMCO-EOT conundrum: same benthic δ18O, different CO2; data supplement

, 2016
<p>Data supplement to "The MMCO-EOT conundrum: same benthic δ18O, different CO2" by Stap et al.
Lourens, Lucas J., Lourens, Lucas J. (5284657), Stap, Lennert B., De Boer, Bas (5284666), Van de Wal, Roderik S.W., Stap, Lennert B. (5284663), Bintanja, Richard (5284660), Bintanja, Richard, De Boer, Bas, Van de Wal, Roderik S.W. (5284654)   +9 more
core   +1 more source

Cotton strips as a model substrate for analysis of leaf‐litter‐colonizing microbial assemblages in streams

Limnology and Oceanography: Methods, EarlyView.
Abstract Leaf‐litter decomposition is a key indicator of the functional integrity of stream ecosystems and cotton strips have been employed as a standard substrate for quantification of litter‐decomposition rates in streams across the globe. Cotton strips also offer a standardized method for assessing structural integrity of stream microbial ...
Trinity Shoemaker, Cynthia Nguyen, Scott D. Tiegs, David M. Costello, John J. Kelly   +4 more
wiley   +1 more source