User profiles for P. J. Wallhead
Phil WallheadResearch Scientist, NIVA Verified email at niva.no Cited by 791 |
[HTML][HTML] Probing the rare biosphere of the North-West Mediterranean Sea: an experiment with high sequencing effort
High-throughput sequencing (HTS) techniques have suggested the existence of a wealth of
species with very low relative abundance: the rare biosphere. We attempted to exhaustively …
species with very low relative abundance: the rare biosphere. We attempted to exhaustively …
Spatially implicit plankton population models: transient spatial variability
PJ Wallhead, AP Martin, MA Srokosz - Journal of Theoretical Biology, 2008 - Elsevier
Ocean plankton models are useful tools for understanding and predicting the behaviour of
planktonic ecosystems. However, when the regions represented by the model grid cells are …
planktonic ecosystems. However, when the regions represented by the model grid cells are …
Bottom water acidification and warming on the western Eurasian Arctic shelves: dynamical downscaling projections
The impacts of oceanic CO 2 uptake and global warming on the surface ocean environment
have received substantial attention, but few studies have focused on shelf bottom water, …
have received substantial attention, but few studies have focused on shelf bottom water, …
Long‐term variability of phytoplankton carbon biomass in the Sargasso Sea
PJ Wallhead, VC Garçon, JR Casey… - Global …, 2014 - Wiley Online Library
Time series of phytoplankton carbon biomass are scarce yet may provide important insights
into ocean productivity and carbon export to depth via the oceanic biological pump. We …
into ocean productivity and carbon export to depth via the oceanic biological pump. We …
Efficient upscaling of ocean biogeochemistry
PJ Wallhead, VC Garçon, AP Martin - Ocean Modelling, 2013 - Elsevier
More accurate methods are needed to represent biogeochemistry in ocean models with coarse
spatial resolution, in order to assess the response of marine ecosystems to global change…
spatial resolution, in order to assess the response of marine ecosystems to global change…
Skill assessment via cross-validation and Monte Carlo simulation: An application to Georges Bank plankton models
PJ Wallhead, AP Martin, MA Srokosz… - Journal of Marine …, 2009 - Elsevier
Better methods are required to assess the skill or uncertainty of plankton model predictions.
A method is presented which combines cross-validation with simulated repeat samplings of …
A method is presented which combines cross-validation with simulated repeat samplings of …
Accounting for unresolved spatial variability in marine ecosystems using time lags
PJ Wallhead, AP Martin, MA Srokosz… - Journal of Marine …, 2006 - ingentaconnect.com
The formulation and calibration of models is a vital method for probing and predicting the
behavior of marine ecosystems. The ability to do this may suffer, however, if the calibrating data …
behavior of marine ecosystems. The ability to do this may suffer, however, if the calibrating data …
Probing the fabric of the rare biosphere
The relatively recent development of high-throughput sequencing (HTS) techniques has
revealed a wealth of novel sequences found in very low abundance: the rare biosphere. Today, …
revealed a wealth of novel sequences found in very low abundance: the rare biosphere. Today, …
[PDF][PDF] Accounting for unpredictable spatial variability in plankton ecosystem models
PJ Wallhead - 2008 - eprints.soton.ac.uk
… • Family members for their unflagging support and encouragement over the years: my mother
Margaret Wallhead, my father Melvyn Wallhead and my brothers Nick and Chris Wallhead. …
Margaret Wallhead, my father Melvyn Wallhead and my brothers Nick and Chris Wallhead. …
[PDF][PDF] Probing the rare biosphere of the North-West Mediterranean Sea
The relatively recent development of high-throughput sequencing (HTS) techniques has
revealed a wealth of novel sequences found in very low abundance: the rare biosphere. We …
revealed a wealth of novel sequences found in very low abundance: the rare biosphere. We …