Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Walker P. Smith"'
Under‐Ice Mixed Layers and the Regulation of Early Spring Phytoplankton Growth in the Southern Ocean
Autor:
Walker O. Smith Jr., Yisen Zhong
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 2, Pp n/a-n/a (2024)
Abstract Under‐ice phytoplankton “blooms” have been observed in the Southern Ocean, although irradiance is extremely low and vertical mixing is assumed to be deep. Most under‐ice data have been collected using Argo floats, as research expedit
Externí odkaz:
https://doaj.org/article/38d10407d4d046519050ea10860f403e
Autor:
Huizi Dong, Meng Zhou, Roshin P. Raj, Walker O. Smith, Sünnje L. Basedow, Rubao Ji, Carin Ashjian, Zhaoru Zhang, Ziyuan Hu
Publikováno v:
Frontiers in Marine Science, Vol 9 (2022)
The substantial productivity of the northern Norwegian Sea is closely related to its strong mesoscale eddy activity, but how eddies affect phytoplankton biomass levels in the upper ocean through horizontal and vertical transport-mixing has not been w
Externí odkaz:
https://doaj.org/article/62fad3933bd24a0bb0471520d9cbbb7b
Autor:
Nadine M. Johnston, Eugene J. Murphy, Angus Atkinson, Andrew J. Constable, Cédric Cotté, Martin Cox, Kendra L. Daly, Ryan Driscoll, Hauke Flores, Svenja Halfter, Natasha Henschke, Simeon L. Hill, Juan Höfer, Brian P. V. Hunt, So Kawaguchi, Dhugal Lindsay, Cecilia Liszka, Valerie Loeb, Clara Manno, Bettina Meyer, Evgeny A. Pakhomov, Matthew H. Pinkerton, Christian S. Reiss, Kate Richerson, Walker O. Smith Jr., Deborah K. Steinberg, Kerrie M. Swadling, Geraint A. Tarling, Sally E. Thorpe, Devi Veytia, Peter Ward, Christine K. Weldrick, Guang Yang
Publikováno v:
Frontiers in Ecology and Evolution, Vol 9 (2022)
In the Southern Ocean, several zooplankton taxonomic groups, euphausiids, copepods, salps and pteropods, are notable because of their biomass and abundance and their roles in maintaining food webs and ecosystem structure and function, including the p
Externí odkaz:
https://doaj.org/article/da5bcc039c4149deb2168894967e029f
Autor:
Jiejie Ma, Walker O. Smith
Publikováno v:
Frontiers in Marine Science, Vol 9 (2022)
Estimates of primary production represent the input of carbon into food webs, as well as the initial step in the biological pump. For the past 60 years, much of the productivity information has been obtained using measurements of 14C-bicarbonate remo
Externí odkaz:
https://doaj.org/article/d4b1f18055bf43118e60108826d5aa5f
Publikováno v:
Frontiers in Microbiology, Vol 12 (2021)
The cosmopolitan algae Phaeocystis globosa forms harmful algal blooms frequently in a number of tropical and subtropical coastal regions in the past two decades. During the bloom, the giant colony, which is formed by P. globosa, is the dominant morph
Externí odkaz:
https://doaj.org/article/7bde73631a094cd997178eae66758179
Autor:
Zhaoru Zhang, Meng Zhou, Yisen Zhong, Guosen Zhang, Shan Jiang, Yonghui Gao, Ruifeng Zhang, Walker O. Smith
Publikováno v:
Frontiers in Marine Science, Vol 7 (2020)
Phytoplankton biomass in estuarine and continental shelf regions are regulated and modified by physical processes, but these interactions have mostly been investigated at a scale of tens of kilometers, and the role of meso- to sub-mesoscale dynamical
Externí odkaz:
https://doaj.org/article/7434b19c63494c10969b06229fd08597
Autor:
Sasha Tozzi, Walker O. Smith
Publikováno v:
AIMS Geosciences, Vol 3, Iss 2, Pp 142-162 (2017)
The Antarctic is a unique environment in which substantial variations in irradiance occur over a number of time scales, and as a result phytoplankton need to acclimate and adapt to these changes. We conducted field and laboratory manipulations in the
Externí odkaz:
https://doaj.org/article/266a13864e6841c18e02f228591667c9
Autor:
Vernon L. Asper, Walker O. Smith
Publikováno v:
Elementa: Science of the Anthropocene, Vol 7, Iss 1 (2019)
The vertical distribution and temporal changes in aggregate abundance and sizes were measured in the Ross Sea, Antarctica between 2002 and 2005 to acquire a more complete understanding of the mechanisms and rates of carbon export from the euphotic la
Externí odkaz:
https://doaj.org/article/b25b9500efba451aac20f1a9d2cf3950
Autor:
Rachel D. Cavanagh, Eugene J. Murphy, Thomas J. Bracegirdle, John Turner, Cheryl A. Knowland, Stuart P. Corney, Walker O. Smith, Claire M. Waluda, Nadine M. Johnston, Richard G. J. Bellerby, Andrew J. Constable, Daniel P. Costa, Eileen E. Hofmann, Jennifer A. Jackson, Iain J. Staniland, Dieter Wolf-Gladrow, José C. Xavier
Publikováno v:
Frontiers in Marine Science, Vol 4 (2017)
Increasing concern about the impacts of climate change on ecosystems is prompting ecologists and ecosystem managers to seek reliable projections of physical drivers of change. The use of global climate models in ecology is growing, although drawing e
Externí odkaz:
https://doaj.org/article/0a36eb35b671465fb9d8f96bd50a4294
Autor:
Walker O. Smith Jr, Kimberly T. Goetz, Daniel E. Kaufman, Bastien Y. Queste, Vernon Asper, Daniel P. Costa, Michael S. Dinniman, Marjorie A.M. Friedrichs, Eileen E. Hofmann, Karen J. Heywood, John M. Klinck, Josh T. Kohut, Craig M. Lee
Publikováno v:
Oceanography, Vol 27, Iss 2, Pp 180-185 (2014)
In 2010–2011, three projects combined to characterize the temporal and spatial distributions of Modified Circumpolar Deep Water (MCDW) in the Ross Sea using icebreaker-based sampling, gliders, instrumented seals, and hindcasts from a numerical circ
Externí odkaz:
https://doaj.org/article/bac4598d562f4a6a80e0b39ef9df7be4