Tom F. Pedersen

TL;DR: In this paper, a >100 point comparison of sediment trap and surface sedimentary nitrogen isotope values demonstrates that, at sites located off of the continental margins, an increase in sediment 15N/14N occurs during early burial, likely at the seafloor.

TL;DR: It is suggested that water column oxygen depletion has a substantial impact on Cd biogeochemical cycling, impacting the global relationship between Cd and major nutrients and suggesting that Cd may be a previously unidentified tracer for water columnoxy deficiency on geological timescales.

TL;DR: In this article, the authors reviewed published palaeoceanographic records of export production over the last 800 kyrs from the open North Pacific (north of ∼35°N) and found that there is no compelling evidence for an overall increase in productivity during glacials in the subarctic region, challenging the paradigm that dust-born Fe fertilization of this region has contributed to the glacial draw down of atmospheric CO2.

TL;DR: In this article, high-resolution N isotope records from the Gulf of Tehuantepec and the Nicaragua Basin spanning the last 50-70 ka were presented, showing that the influence of heavy nitrate leakage from the ETSP is still noticeable, although attenuated, in the Gulf N-15 record, particularly at the end of the Heinrich events.

TL;DR: The sedimentary record in a 40.9 m giant piston core (MD02-2494) raised from the inner basin within Effingham Inlet, British Columbia, Canada, during the 2002 Marges Ouest Nord Americaines (MONA) campaign, spans from 14 360 14 C years BP (17 300 calibrated calendar (cal.) years BP) to about nine centuries before present as mentioned in this paper.