Gert L Van Dijken
Dados Biográficos
| ID | 8853541 |
|---|---|
| NOME | Gert L Van Dijken |
| PRENOMES | Gert L |
| SOBRENOME | Van Dijken |
| ASSINATURA | VAN DIJKEN G L |
| AFILIAÇÕES | Stanford University |
| ORCID | 0000-0002-9587-6317 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 8 |
| TOTAL DE CITAÇÕES | 0 |
| TOTAL COMO AUTOR | 8 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1996 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2024 |
| ÍNDICE H | 0 |
Pan-Arctic analysis of the frequency of under-ice and marginal ice zone phytoplankton blooms, 2003–2021
Under-ice (UI) phytoplankton blooms have been observed in most of the marginal seas of the Arctic Ocean and are often found to contribute substantially to total primary production. However, because remote sensing studies cannot directly measure UI blooms and limited in situ observations prevent analysis of their frequency across the region as a whole, their distribution has not been characterized across the Arctic Ocean. Here, we use remote sensi…
Linking multiple stressor science to policy opportunities through network modeling
Global climate change and a suite of other human-generated stressors are causing significant changes in the world’s oceans. Ocean stressors combine and interact, and when there are multiple stressors, the interactions are often synergistic – the combined impact is greater than the sum of their individual effects. Synergistic interactions yield non-linear impacts, which means that failure to account for synergies may vastly underestimate risk. How…
Increases in Arctic sea ice algal habitat, 1985–2018
In the Arctic Ocean, sea ice algae are responsible for a small but seasonally important pulse of primary production. Their persistence is threatened by the rapid loss of sea ice from the Arctic Ocean due to climate change, but this threat will be at least partially offset by the replacement of multiyear ice (MYI) with first-year ice (FYI). FYI is thinner and usually features a thinner snow cover than MYI, thus transmitting more light to support i…
Response of Lower Sacramento River phytoplankton to high-ammonium wastewater effluent
Since the 1980s, the San Francisco Bay Delta ecosystem has experienced large declines in primary production. Hypothesized reasons for this decline include (1) suppression of nitrate (NO3−) uptake, and thus phytoplankton growth, due to high concentrations of ammonium (NH4+), and (2) wastewater NH4+-induced changes in phytoplankton community composition away from large-celled diatoms. These twin hypotheses implicate NH4+ loading from the Sacramento…
Environmental drivers of under-ice phytoplankton bloom dynamics in the Arctic Ocean
The decline of sea-ice thickness, area, and volume due to the transition from multi-year to first-year sea ice has improved the under-ice light environment for pelagic Arctic ecosystems. One unexpected and direct consequence of this transition, the proliferation of under-ice phytoplankton blooms (UIBs), challenges the paradigm that waters beneath the ice pack harbor little planktonic life. Little is known about the diversity and spatial distribut…
A carbon budget for the Amundsen Sea Polynya, Antarctica
Polynyas, or recurring areas of seasonally open water surrounded by sea ice, are foci for energy and material transfer between the atmosphere and the polar ocean. They are also climate sensitive, with both sea ice extent and glacial melt influencing their productivity. The Amundsen Sea Polynya (ASP) is the greenest polynya in the Southern Ocean, with summertime chlorophyll a concentrations exceeding 20 μg L−1. During the Amundsen Sea Polynya Inte…
Fe availability drives phytoplankton photosynthesis rates during spring bloom in the Amundsen Sea Polynya, Antarctica
To evaluate what drives phytoplankton photosynthesis rates in the Amundsen Sea Polynya (ASP), Antarctica, during the spring bloom, we studied phytoplankton biomass, photosynthesis rates, and water column productivity during a bloom of Phaeocystis antarctica (Haptophyceae) and tested effects of iron (Fe) and light availability on these parameters in bioassay experiments in deck incubators. Phytoplankton biomass and productivity were highest (20 μg…
Effects of ultraviolet radiation on marine ecosystems
Stratospheric ozone depletion, now on a global scale, is causing renewed concern about the consequences of increased levels of ultraviolet radiation (UV‐B in particular) reaching the Earth's biosphere. UV‐B interacts directly with DNA and a variety of other cellular constituents, generating several photoproducts that have deleterious effects on the living cells. Even without ozone depletion, ambient levels of UV‐B radiation across latitudes, alti…
Sem obras proeminentes nesta página.
Effects of ultraviolet radiation on marine ecosystems
Stratospheric ozone depletion, now on a global scale, is causing renewed concern about the consequences of increased levels of ultraviolet radiation (UV‐B in particular) reaching the Earth's biosphere. UV‐B interacts directly with DNA and a variety of other cellular constituents, generating several photoproducts that have deleterious effects on the living cells. Even without ozone depletion, ambient levels of UV‐B radiation across latitudes, alti…
Fe availability drives phytoplankton photosynthesis rates during spring bloom in the Amundsen Sea Polynya, Antarctica
To evaluate what drives phytoplankton photosynthesis rates in the Amundsen Sea Polynya (ASP), Antarctica, during the spring bloom, we studied phytoplankton biomass, photosynthesis rates, and water column productivity during a bloom of Phaeocystis antarctica (Haptophyceae) and tested effects of iron (Fe) and light availability on these parameters in bioassay experiments in deck incubators. Phytoplankton biomass and productivity were highest (20 μg…
A carbon budget for the Amundsen Sea Polynya, Antarctica
Polynyas, or recurring areas of seasonally open water surrounded by sea ice, are foci for energy and material transfer between the atmosphere and the polar ocean. They are also climate sensitive, with both sea ice extent and glacial melt influencing their productivity. The Amundsen Sea Polynya (ASP) is the greenest polynya in the Southern Ocean, with summertime chlorophyll a concentrations exceeding 20 μg L−1. During the Amundsen Sea Polynya Inte…
Environmental drivers of under-ice phytoplankton bloom dynamics in the Arctic Ocean
The decline of sea-ice thickness, area, and volume due to the transition from multi-year to first-year sea ice has improved the under-ice light environment for pelagic Arctic ecosystems. One unexpected and direct consequence of this transition, the proliferation of under-ice phytoplankton blooms (UIBs), challenges the paradigm that waters beneath the ice pack harbor little planktonic life. Little is known about the diversity and spatial distribut…
Response of Lower Sacramento River phytoplankton to high-ammonium wastewater effluent
Since the 1980s, the San Francisco Bay Delta ecosystem has experienced large declines in primary production. Hypothesized reasons for this decline include (1) suppression of nitrate (NO3−) uptake, and thus phytoplankton growth, due to high concentrations of ammonium (NH4+), and (2) wastewater NH4+-induced changes in phytoplankton community composition away from large-celled diatoms. These twin hypotheses implicate NH4+ loading from the Sacramento…
Linking multiple stressor science to policy opportunities through network modeling
Global climate change and a suite of other human-generated stressors are causing significant changes in the world’s oceans. Ocean stressors combine and interact, and when there are multiple stressors, the interactions are often synergistic – the combined impact is greater than the sum of their individual effects. Synergistic interactions yield non-linear impacts, which means that failure to account for synergies may vastly underestimate risk. How…
Increases in Arctic sea ice algal habitat, 1985–2018
In the Arctic Ocean, sea ice algae are responsible for a small but seasonally important pulse of primary production. Their persistence is threatened by the rapid loss of sea ice from the Arctic Ocean due to climate change, but this threat will be at least partially offset by the replacement of multiyear ice (MYI) with first-year ice (FYI). FYI is thinner and usually features a thinner snow cover than MYI, thus transmitting more light to support i…
Pan-Arctic analysis of the frequency of under-ice and marginal ice zone phytoplankton blooms, 2003–2021
Under-ice (UI) phytoplankton blooms have been observed in most of the marginal seas of the Arctic Ocean and are often found to contribute substantially to total primary production. However, because remote sensing studies cannot directly measure UI blooms and limited in situ observations prevent analysis of their frequency across the region as a whole, their distribution has not been characterized across the Arctic Ocean. Here, we use remote sensi…
Biology (8 obras) · Ecology (8 obras) · Environmental Science (8 obras) · Marine and coastal ecosystems (7 obras) · Geology (6 obras) · Nutrient (6 obras) · Oceanography (6 obras) · Phytoplankton (6 obras) · Arctic and Antarctic ice dynamics (5 obras) · Sea ice (4 obras)