Results 141 to 150 of about 195,443 (302)

A circumpolar perspective on fluvial sediment flux to the Arctic ocean [PDF]

, 2002
Quantification of sediment fluxes from rivers is fundamental to understanding land‐ocean linkages in the Arctic. Numerous publications have focused on this subject over the past century, yet assessments of temporal trends are scarce and consensus on ...
Holmes, Robert M., McClelland, James W., Peterson, Bruce J.   +2 more
core   +2 more sources

Salmonella enterica serovars co‐exist sporadically and at low abundance in US mid‐Atlantic irrigation ponds

Journal of the Science of Food and Agriculture, EarlyView.
Abstract BACKGROUND Spring or rain‐fed ponds are frequent features on US mid‐Atlantic farms. The need to conduct preharvest agricultural water assessments to identify microbial hazards, as required by the US Produce Safety Rule, highlights knowledge gaps pertaining to pond water adequacy for vegetable production.
Shirley A Micallef, Mary Theresa Callahan, Nikki W Shariat, Yisrael Katz, Xingchen Liu   +4 more
wiley   +1 more source

Calculations of Arctic Ice‐Ocean Interface Photosynthetically Active Radiation (PAR) Transmittance Values

Earth and Space Science
Sea ice algae play an important role in the Arctic Ocean ecosystem, driving primary production in the spring and sequestering carbon to the deep ocean.
B. H. Redmond Roche, M. D. King
doaj   +1 more source

Impact of assimilation of absolute dynamic topography on Arctic Ocean circulation

Frontiers in Marine Science
The ocean circulation is typically constrained in operational analysis and forecasting systems through the assimilation of sea level anomaly (SLA) retrievals from satellite altimetry. This approach has limited benefits in the Arctic Ocean and surrounding
Gregory C. Smith, Charlie Hébert-Pinard, Audrey-Anne Gauthier, François Roy, Kenneth Andrew Peterson, Pierre Veillard, Yannice Faugère, Sandrine Mulet, Miguel Morales Maqueda   +8 more
doaj   +1 more source

Demonstration, validation, and application of hyperspectral microscopy for the collection of cyanobacterial spectral signatures

Limnology and Oceanography: Methods, EarlyView.
Abstract Cyanobacterial and other algal blooms are an environmental concern in waterbodies worldwide. While these blooms are a nuisance for recreational activities, they can also be harmful to human and wildlife health when the algae produce and release toxins.
Natalie C. Hall, Adam C. Mumford, Aaron M. Goldfain, David W. Allen, E. Terrence Slonecker, Alisa Shtabnoy, Carl J. Legleiter, Sarah A. Spaulding   +7 more
wiley   +1 more source

Performance of a glider‐mounted multifrequency echosounder for measuring the vertical distribution and abundance of large pelagic copepods

Limnology and Oceanography: Methods, EarlyView.
Abstract The difficulty of sampling zooplankton communities in situ has driven advancements in autonomous, remote sensing technology. The goal of this paper was to perform a gear comparison study testing the performance of one such piece of technology—a glider‐mounted four‐frequency echosounder—against traditional shipboard methods of measuring ...
Delphine Mossman, Joseph D. Warren, Natasha J. Hynes, Kimberley T. A. Davies   +3 more
wiley   +1 more source

Applicability of the steady‐state oxygen stable isotope method for estimating metabolism in low‐productivity Arctic lakes

Limnology and Oceanography: Methods, EarlyView.
Abstract Metabolism is a key property of lake ecosystem functioning, but logistical challenges make it difficult to estimate across remote regions. The steady‐state dissolved oxygen (DO) stable isotope method (18O method) estimates metabolism from discrete water samples and thus enables large‐scale surveys.
Fredrik Alriksson, Marcus Klaus, Cristian Gudasz, Matthew Bogard, Gerard Rocher‐Ros, Dominic Vachon, Jan Karlsson   +6 more
wiley   +1 more source

Assessment of contemporary Arctic river runoff based on observational discharge records [PDF]

, 2001
We describe the contemporary hydrography of the pan‐Arctic land area draining into the Arctic Ocean, northern Bering Sea, and Hudson Bay on the basis of observational records of river discharge and computed runoff.
Fekete, Balazs M., Lammers, Richard B., Peterson, Bruce J., Shiklomanov, Alexander I., Vorosmarty, Charles J.   +4 more
core   +1 more source

Lipid correction of hydrogen stable isotope ratios in fish

Limnology and Oceanography: Methods, EarlyView.
Abstract Lipids are known to affect stable isotope ratio of organisms, especially δ13C values, and simple arithmetic lipid‐correction procedures have been developed based on the carbon to nitrogen ratio (C : N) that is a proxy for lipid content. Equivalent issues will likely arise with the increasing use of hydrogen isotopes in ecology, but as yet no ...
Kang Wang, Mikko Kiljunen, Jos Schilder, Heikki Hämäläinen, Kimmo K. Kahilainen, Roger I. Jones   +5 more
wiley   +1 more source

Controls on zooplankton assemblages in the northeastern Chukchi Sea [PDF]

, 2016
Thesis (Ph.D.) University of Alaska Fairbanks, 2016The Chukchi Sea is a broad and shallow marginal sea of the western Arctic Ocean that lies between the Bering Sea and the deeper Amerasian basin.
Questel, Jennifer
core