Results 91 to 100 of about 74,628 (272)

Sediment trap preservative choice impacts particle‐associated microbial community composition

Limnology and Oceanography: Methods, EarlyView.
Abstract Understanding and quantifying the microbial contribution to particulate organic matter (POM) flux and carbon cycling in the ocean relies largely on the collection of sinking POM. A critical aspect of evaluating microbial communities on sediment trap‐collected POM is their preservation until recovery and sample processing.
Nicola L. Paul, Colleen A. Durkin, Sebastian Sudek, Matthieu Bressac, Philip W. Boyd, Eric J. Tappa, Claudia R. Benitez‐Nelson, Alyson E. Santoro   +7 more
wiley   +1 more source

The carbonate pump feedback on alkalinity and the carbon cycle in the 21st century and beyond [PDF]

Earth System Dynamics
Ocean acidification is likely to impact all stages of the ocean carbonate pump, i.e. the production, export, dissolution and burial of biogenic CaCO3. However, the associated feedback on anthropogenic carbon uptake and ocean acidification has received ...
A. Planchat, L. Bopp, L. Kwiatkowski, O. Torres   +3 more
doaj   +1 more source

Chemical stabilization of glass microfiber type F filters for measuring particulate phosphorus using the extra high‐temperature dry combustion method

Limnology and Oceanography: Methods, EarlyView.
Abstract Accurate quantification of particulate phosphorus is critical for understanding biogeochemical processes in aquatic systems. Extra high‐temperature dry combustion at 800°C improves phosphorus recovery by ~ 11% compared to lower‐temperature methods.
Ying‐Yu Hu, Andrew J. Irwin, Zoe V. Finkel   +2 more
wiley   +1 more source

Extensive dissolution of live pteropods in the Southern Ocean [PDF]

, 2012
The carbonate chemistry of the surface ocean is rapidly changing with ocean acidification, a result of human activities. In the upper layers of the Southern Ocean, aragonite—a metastable form of calcium carbonate with rapid dissolution kinetics—may ...
A. Kuzirian, AG Dickson, AG Dickson, B. Lézé, BI McNeil, BPV Hunt, C Le Quere, C Mehrbach, D Roberts, D. C. E. Bakker, E Jones, E. J. Murphy, E. M. Jones, G. A. Tarling, H Jansen, H. J. Venables, J Park, JC Orr, KJ Heywood, KM Johnson, M Kahru, M Steinacher, M Yamamoto-Kawai, N Bednarsek, N Bednarsek, N. Bednaršek, P. Ward, PR Betzer, R Francois, R. A. Feely, RA Feely, RA Feely, RA Feely, RH Byrne, S Comeau, S Comeau, S. Fielding, VJ Fabry, VJ Fabry, WS Broecker   +39 more
core   +3 more sources

Marine trophic architecture and hidden ecological connections in the Strait of Magellan: keystone species and ecosystem resilience

Oikos, EarlyView.
Understanding the ecological implications of species coexistence is central to biodiversity studies and to identify environmental and anthropogenic drivers of ecosystem dynamics, where ecological network analysis offers valuable insights. This study examines the complexity, structure, and potential responses to disturbances of the Strait of Magellan's ...
Claudia D. Andrade, Taryn Sepúlveda, Cristóbal Rivera, Cristian Aldea, Tomás I. Marina   +4 more
wiley   +1 more source

Effect of ocean acidification on marine fish sperm (Baltic cod: Gadus morhua) [PDF]

, 2010
Ocean acidification, as a consequence of increasing marine pCO2, may have severe effects on the physiology of marine organisms. However, experimental studies remain scarce, in particular concerning fish.
Clemmesen, Catriona, Frommel, Andrea, Havenhand, J., Stiebens, Victor   +3 more
core   +2 more sources

Deep Proteomic Profiles of the Antarctic Diatom Fragilariopsis Cylindrus Under Varying Iron and Manganese Conditions

PROTEOMICS, EarlyView.
ABSTRACT Fragilariopsis cylindrus is a key diatom in the Southern Ocean, where low iron and manganese availability constrain primary production and biogeochemical activity. The molecular mechanisms used by polar diatoms, including F. cylindrus, to cope with trace metal limitations remain largely unexplored.
Loay J. Jabre, Elden Rowland, J. Scott P. McCain, Erin M. Bertrand   +3 more
wiley   +1 more source

CO2 perturbation experiments: similarities and differences between dissolved inorganic carbon and total alkalinity manipulations [PDF]

, 2009
Increasing atmospheric carbon dioxide (CO2) through human activities and invasion of anthropogenic CO2 into the surface ocean alters the seawater carbonate chemistry, increasing CO2 and bicarbonate (HCO3−) at the expense of carbonate ion (CO32 ...
Barcelos e Ramos, Joana, Riebesell, Ulf, Schulz, Kai, Zeebe, R. E.   +3 more
core  

No compromise between metabolism and behavior of decorator crabs in reduced pH conditions. [PDF]

, 2019
Many marine calcifiers experience metabolic costs when exposed to experimental ocean acidification conditions, potentially limiting the energy available to support regulatory processes and behaviors. Decorator crabs expend energy on decoration camouflage
Graeve, Olivia A, Rankin, Ashley, Seo, Kyungah, Taylor, Jennifer RA   +3 more
core   +3 more sources

Cryostratigraphy of Rhythmic Segregated Ice in Colluvium and Implications for Permafrost Slope Stability

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT The amount and stratigraphic setting of ground ice in permafrost slopes is a key control on the style and magnitude of permafrost mass wasting. Understanding the spatial and stratigraphic variations in ground ice distribution on permafrost slopes is therefore a fundamental property in assessing the stability of permafrost hillslopes.
Joseph M. Young, Alejandro Alvarez, Duane Froese   +2 more
wiley   +1 more source