Reply on RC3 DOI Creative Commons

Christoph Heinze

Published: March 12, 2024

Abstract. Abrupt changes in ocean biogeochemical variables occur as a result of human-induced climate forcing well those which are more gradual and over longer timescales. These abrupt have not yet been identified quantified to the same extent ones. We review synthesise biogeochemistry under climatic forcing. specifically address carbon oxygen cycles because related processes acidification deoxygenation provide important ecosystem hazards. Since depend also on physical environment, we describe relevant warming, circulation, sea ice. include an overview reversibility or irreversibility marine changes. Important implications for ecosystems discussed. conclude that there is evidence increasing occurrence consequence rising greenhouse gas emissions.

Language: Английский

Variations of suspended particulate matter concentrations of the Mackenzie River plume (Beaufort Sea, Arctic Ocean) over the last two decades DOI Creative Commons
A.G. Tarasenko, David Doxaran,

Bernard Gentili

et al.

Marine Pollution Bulletin, Journal Year: 2023, Volume and Issue: 196, P. 115619 - 115619

Published: Oct. 15, 2023

This work addresses the last 20 years' evolution of suspended particulate matter (SPM) concentrations in Beaufort Sea (Canadian Arctic Ocean) directly influenced by Mackenzie River discharge. The SPM variations coastal zone are highlighted and related to freshwater solid discharges river measured situ at Red station (150 km upstream delta). correlation between discharge concentration within surface layer waters is obvious. Rather unexpectedly, both have been slightly but significantly decreasing from 2003 2018-2019 started increase very recently (2019-2022). change regime could be explained changing winter precipitation groundwater distribution, progressively accumulating sediments thawing permafrost its recent release into together with thermokarst lakes' rapid drainage.

Language: Английский

Citations

1
Legacy Contamination from Mercury Mining in the Fergana Valley Region of Central Asia DOI
Alexander R. Pelletier, Alexander V. Zhulidov,

А. В. Кожара

et al.

ACS Chemical Health & Safety, Journal Year: 2023, Volume and Issue: unknown

Published: Nov. 28, 2023

The toxic metal mercury (Hg) has been mined, processed, and used throughout the Fergana Valley region of post-Soviet Central Asia for millennia. Although most historical Hg mining activities have ceased region, is still exported globally from Khaidarkan kombinat in southwestern Kyrgyzstan. Despite rich history use legacy effects these on environmental contamination remain undescribed. Mercury concentrations were analyzed topsoil, terrestrial vegetation, earthworms, riverine sediments, fish collected sites with varied histories within region. Environmental biological greatest at contemporary where mined after 1940, intermediate ancient all before 1300 AD, lowest reference without known history. For media biota, 1–2 orders magnitude greater than sites. Elevated are attributed to recency intensity showcase detrimental diverse biota. a combination (1) soils sediments introduced by processing over 700 years ago (2) presence naturally Hg-rich geologic belts upon which mines constructed.

Language: Английский

Citations

1
Comment on bg-2023-182 DOI Creative Commons
Christoph Heinze, Thorsten Blenckner, Peter J. Brown

et al.

Published: Feb. 12, 2024

Abstract. Abrupt changes in ocean biogeochemical variables occur as a result of human-induced climate forcing well those which are more gradual and over longer timescales. These abrupt have not yet been identified quantified to the same extent ones. We review synthesise biogeochemistry under climatic forcing. specifically address carbon oxygen cycles because related processes acidification deoxygenation provide important ecosystem hazards. Since depend also on physical environment, we describe relevant warming, circulation, sea ice. include an overview reversibility or irreversibility marine changes. Important implications for ecosystems discussed. conclude that there is evidence increasing occurrence consequence rising greenhouse gas emissions.

Language: Английский

Citations

0
Reply on RC1 DOI Creative Commons

Christoph Heinze

Published: March 12, 2024

Abstract. Abrupt changes in ocean biogeochemical variables occur as a result of human-induced climate forcing well those which are more gradual and over longer timescales. These abrupt have not yet been identified quantified to the same extent ones. We review synthesise biogeochemistry under climatic forcing. specifically address carbon oxygen cycles because related processes acidification deoxygenation provide important ecosystem hazards. Since depend also on physical environment, we describe relevant warming, circulation, sea ice. include an overview reversibility or irreversibility marine changes. Important implications for ecosystems discussed. conclude that there is evidence increasing occurrence consequence rising greenhouse gas emissions.

Language: Английский

Citations

0
Reply on RC3 DOI Creative Commons

Christoph Heinze

Published: March 12, 2024

Abstract. Abrupt changes in ocean biogeochemical variables occur as a result of human-induced climate forcing well those which are more gradual and over longer timescales. These abrupt have not yet been identified quantified to the same extent ones. We review synthesise biogeochemistry under climatic forcing. specifically address carbon oxygen cycles because related processes acidification deoxygenation provide important ecosystem hazards. Since depend also on physical environment, we describe relevant warming, circulation, sea ice. include an overview reversibility or irreversibility marine changes. Important implications for ecosystems discussed. conclude that there is evidence increasing occurrence consequence rising greenhouse gas emissions.

Language: Английский

Citations

0