Possible enhancement in ocean productivity associated with wildfire-derived nutrient and black carbon deposition in the Arctic Ocean in 2019–2021

Seok, Min-Woo; Ko, Young Ho; Park, Ki-Tae; Kim, Tae-Wook

doi:10.1016/j.marpolbul.2024.116149

“…In the Northern Hemisphere large fires across Siberian forests and peatlands during the summer of 2014 were suggested to contribute significant reactive nitrogen inputs to the surface Arctic ocean, helping boost and sustain an unusually large phytoplankton bloom (Ardyna et al, 2022). A similar increase in East Siberian Sea productivity (by over 200%) was attributed to direct nutrient (nitrogen) deposition and black carbon-induced fast-ice melting from increased fires on the Eurasian continent in 2019-2020 (Seok et al, 2024). Coastal community shifts were observed in the Santa Barbara Channel (California, USA) during the 2017 record-breaking Thomas fires (Kramer et al, 2020;Ladd et al, 2023).…”

Section: Water Quality and Other Aquatic Impactsmentioning

confidence: 85%

Review period

2024

0

View full text Add to dashboard Cite

“…In the Northern Hemisphere large fires across Siberian forests and peatlands during the summer of 2014 were suggested to contribute significant reactive nitrogen inputs to the surface Arctic ocean, helping boost and sustain an unusually large phytoplankton bloom (Ardyna et al, 2022). A similar increase in East Siberian Sea productivity (by over 200%) was attributed to direct nutrient (nitrogen) deposition and black carbon-induced fast-ice melting from increased fires on the Eurasian continent in 2019-2020 (Seok et al, 2024). Coastal community shifts were observed in the Santa Barbara Channel (California, USA) during the 2017 record-breaking Thomas fires (Kramer et al, 2020;Ladd et al, 2023).…”

Section: Water Quality and Other Aquatic Impactsmentioning

confidence: 85%

Comment on essd-2024-218

Carlson

2024

0

View full text Add to dashboard Cite

The characteristics of nutrient distribution and influencing factors in the Chukchi Plateau and adjacent waters

Ni,

Zhang,

Zhang

et al. 2024

Front. Mar. Sci.

0

View full text Add to dashboard Cite

The Arctic is one of the regions under the most dramatic climate change. Global warming has led to elevated freshwater inflow into the western Arctic Ocean and significantly altered nutrient structure and biogeochemical cycling. In this work, inorganic dissolved nutrients in the Chukchi Plateau (CP) and adjacent regions were investigated to further understand their characteristics and influencing factors. Results showed that relatively high nutrient concentrations occurred in the water masses with salinity >32 psu, especially there was a nutrient-rich layer influenced by Winter Pacific Water in the water column (15.10±1.96, 2.23±0.26, and 23.46±6.64 µmol/L for DIN, PO43– and Si(OH)4, respectively). Contrarily, lower nutrient concentrations occurred in the mixing water of the upper layer (1.76±1.04, 1.15±0.16 and 3.76±2.29 µmol/L for DIN, PO43– and Si(OH)4, respectively) with a low DIN/P ratio (1.44±0.59), suggesting DIN has become the potentially biological limiting factor. Furthermore, the freshening and deepening of the upper layer driven by the Beaufort Gyre has hindered the nutrient transport from underlying layer into the upper layer. A maximum chla was observed at 36‒75 m water depth, and the phytoplankton biomass decreased from the western to the eastern CP, accompanied by a decreased contribution of micro-sized chla but an increased contribution of small-sized chla (74.0±0.1%). The phytoplankton resource use efficiency for DIN was estimated as (3.2±4.6)×10-3, which was primarily influenced by the physicochemical parameters of water and also largely regulated by the size structure of phytoplankton.

show abstract

Possible enhancement in ocean productivity associated with wildfire-derived nutrient and black carbon deposition in the Arctic Ocean in 2019–2021

Cited by 4 publications

References 54 publications

Review period

Review period

Comment on essd-2024-218

The characteristics of nutrient distribution and influencing factors in the Chukchi Plateau and adjacent waters

Contact Info

Product

Resources

About