Results 71 to 80 of about 4,997 (224)

The role of wind and buoyancy forcing on mixed layer depths and productivity on the Chatham Rise from ocean glider and ship‐based observations

New Zealand Journal of Marine and Freshwater Research, Volume 59, Issue 5, Page 1350-1370, December 2025.
ABSTRACT The Subtropical Front (STF) and associated biological productivity are topographically locked to the Chatham Rise. Year‐to‐year differences of upper ocean dynamics and associated responses of phytoplankton are valuable for understanding variability in fisheries biomass as well as providing new knowledge of environmental condition for potential
Charine Collins, Joe O’Callaghan, Malcolm R. Clark, Scott D. Nodder   +3 more
wiley   +1 more source

Geochemical and Isotopic (Nd, Sr) Tracing of the Origin of REE Enrichment in the Cambrian Georgina Basin Phosphorites

Geochemistry, Geophysics, Geosystems
Phosphorites of the Georgina Basin (northern Australia) are an established economic source of phosphate and have recently been recognized to be a potential source of rare earth elements (REE).
Diana Zivak, Carl Spandler, Matthew Valetich   +2 more
doaj   +1 more source

Potential-productive intervals determination of the tutleim formation in the central part of the Krasnoleninsky arch

Georesursy
The article presents the results of the Tutleim formation complex studies of core from 16 wells drilled on an area of 900 km2 near the Kamennaya crest of the Krasnoleninsky arch.
M. M. Fomina, N. S. Balushkina, O. V. Khotylev, A. G. Kalmykov, G. A. Kalmykov, I. O. Reutskaya, S. A. Romanenko, M. S. Topchy, I. Ya. Bogatyreva, A. A. Alekhin   +9 more
doaj   +1 more source

Experimental seabed disturbance effects on Chatham Rise deep‐sea meiofaunal communities, Southwest Pacific

New Zealand Journal of Marine and Freshwater Research, Volume 59, Issue 5, Page 1388-1421, December 2025.
ABSTRACT Growing global demand for deep‐sea resources may lead to increased pressure on benthic ecosystems. Here we examined changes in meiofaunal communities following an in situ physical disturbance experiment. A significant change in meiofaunal community structure in surface (0‐1 cm) and subsurface (1‐5 cm) sediments was observed immediately ...
Daniel Leduc, Campbell Murray, Ashley A. Rowden, Scott D. Nodder, Rachel Hale, Malcolm R. Clark   +5 more
wiley   +1 more source

Bioorganic Mineral Fertilizer on the Basis of Black Manage, Phosphorite Raw Materials and Biopreparts of Microorganisms [PDF]

E3S Web of Conferences
This article presents the results of studies on the production of bioorganic mineral fertilizers by treating a mixture based on black manure and phosphorite raw materials with a solution that accelerates the humification of organic matter, binds ...
Kanoatov Khayrullo, Namazov Shafoat, Temirov Uktam, Usanboyev Najimuddin, Pirimov Tuychi   +4 more
doaj   +1 more source

Benthic phosphorus cycling in the Peruvian oxygen minimum zone [PDF]

, 2016
Oxygen minimum zones (OMZs) that impinge on continental margins favor the release of phosphorus (P) from the sediments to the water column, enhancing primary productivity and the maintenance or expansion of low-oxygen waters.
Dale, Andrew W., Hensen, Christian, Lomnitz, Ulrike, Löscher, Carolin R., Noffke, Anna, Sommer, Stefan, Wallmann, Klaus   +6 more
core   +2 more sources

Effects of experimental in situ seabed disturbance on deep‐sea macrofaunal communities of Chatham Rise, Southwest Pacific

New Zealand Journal of Marine and Freshwater Research, Volume 59, Issue 5, Page 1422-1459, December 2025.
ABSTRACT With the possibility of deep‐sea mining of mineral resources occurring, it is necessary to understand potential impacts on benthic communities. Previous simulated mining experiments revealed direct benthic impacts; however, indirect impacts of sedimentation are not well understood.
Campbell Murray, Ashley A. Rowden, Daniel Leduc, Scott D. Nodder, Rachel Hale, Jane Halliday, Malcolm R. Clark   +6 more
wiley   +1 more source

Influence of certain types of phosphate raw materials on the technological process of production extraction phosphoric acid and complex fertilizers [PDF]

, 2013
Research on definition of phase structure of various sources of phosphate raw materials was carried out. The possible material compositions of the studied natural phosphate are calculated on the basis of cations and anions balance according to their ...
Cherches, G. H., Dormeshkin, O. B., Gavrilyuk, A. N.   +2 more
core  

Near‐seabed sediment dynamics and fluxes on Chatham Rise, the effects of seabed disturbance, and implications for deep‐sea bottom trawling and seabed mining

New Zealand Journal of Marine and Freshwater Research, Volume 59, Issue 5, Page 1460-1495, December 2025.
ABSTRACT Anthropogenic impacts are increasingly affecting deep‐sea environments, including seafloor sediment disturbances by bottom trawling and seafloor mining. Fieldwork in the ‘Resilience Of Benthic Ecosystems to Sedimentation’ (ROBES) project were conducted in 2018–2020 on the 400 m‐deep Chatham Rise crest, eastern Aotearoa New Zealand.
Scott D. Nodder, Christopher A. Eager, Joe O’Callaghan, Daniel Leduc, Sam Davidson, Stacy Deppeler, Grace Frontin‐Rollet, Peter Gerring, Sarah Searson, William Quinn, Steve George, Ron Ovenden, Sarah J. Bury, Julie Brown, Malcolm R. Clark   +14 more
wiley   +1 more source

The Albian-Cenomanian boudary in the northern part of the Don-Medveditsa dislocations. Paper 2. Oryctocoenoses analysis. Conclusions [PDF]

Известия Саратовского университета. Новая серия: Серия Науки о Земле
Ammonite finds at the Miroshniki site, within the Albian-Cenomanian boundary interval, make it possible to identify the presence of the analogues of the Upper Albian zones Mortoniceras fallax (autochthonous burial within aleurolites) and Mortoniceras ...
Pervushov, Evgeniy Mikhaylovich, Baraboshkin, Evgeniy Yurievich, Shelepov, Dmirtiy Aleksandrovich, Biryukov, Aleksei Vladimirovich   +3 more
doaj   +1 more source