Review: geological and experimental evidence for
... thought to be responsible for systematic changes in the polymorph mineralogy of ooids and marine cements throughout Phanerozoic time (Sandberg, 1983). During intervals of low seawater Mg/Ca (<2), such as early Cambrian through late Mississippian time and Middle Jurassic through middle Paleogene time ...
... thought to be responsible for systematic changes in the polymorph mineralogy of ooids and marine cements throughout Phanerozoic time (Sandberg, 1983). During intervals of low seawater Mg/Ca (<2), such as early Cambrian through late Mississippian time and Middle Jurassic through middle Paleogene time ...
thesis
... First and foremost, I would like to thank my two academic advisors without whom this thesis would not have been a reality. I would like to thank my primary advisor Katherine Richardson for giving me the opportunity to work within the very interesting and challenging topic of phytoplankton macroecolo ...
... First and foremost, I would like to thank my two academic advisors without whom this thesis would not have been a reality. I would like to thank my primary advisor Katherine Richardson for giving me the opportunity to work within the very interesting and challenging topic of phytoplankton macroecolo ...
The Distribution, Abundance and Ecology of
... account for a significant fraction of total bacterivory on occasion. The distribution and abundance of mixotrophic algae have not been widely characterized, however, and the factors that control their abundances and phagotrophic activity in aquatic environments are poorly understood. The vertical di ...
... account for a significant fraction of total bacterivory on occasion. The distribution and abundance of mixotrophic algae have not been widely characterized, however, and the factors that control their abundances and phagotrophic activity in aquatic environments are poorly understood. The vertical di ...
Prochlorococcus Mak A. Saito
... and function of these trace elements been documented in marine organisms (Price and Morel 1990; Lane and Morel 2000). Seawater concentrations of cobalt are extremely low (Saito and Moffett 2002) and can display a nutrient-like depth profile (Martin and Gordon 1988; Saito and Moffett 2001a,b). Moreov ...
... and function of these trace elements been documented in marine organisms (Price and Morel 1990; Lane and Morel 2000). Seawater concentrations of cobalt are extremely low (Saito and Moffett 2002) and can display a nutrient-like depth profile (Martin and Gordon 1988; Saito and Moffett 2001a,b). Moreov ...
Thin Phytoplankton Layers: Characteristics
... of thin layers, resulting in the thinnest phytoplankton peaks being smeared or missed altogether (Donaghay et al. 1992). In the past 15 years we have seen a renaissance of thin layer observations, triggered by major advances in our ability to quantify thin layers of phytoplankton—and zooplankton, wh ...
... of thin layers, resulting in the thinnest phytoplankton peaks being smeared or missed altogether (Donaghay et al. 1992). In the past 15 years we have seen a renaissance of thin layer observations, triggered by major advances in our ability to quantify thin layers of phytoplankton—and zooplankton, wh ...
Levine_etal_EMI_2012
... of the marine sulfur cycle to anthropogenically induced changes can be made. ...
... of the marine sulfur cycle to anthropogenically induced changes can be made. ...
early spring phytoplankton dynamics in the subpolar north atlantic
... Of all losses affecting PP, the largest is due to grazing (Banse 1994). In particular, herbivory by ubiquitous <200 µm heterotrophic protists (HP), such as ciliates and dinoflagellates, has been identified as the major fate of ocean PP (Calbet & Landry 2004, Sherr & Sherr 2009, Strom 2002). Thanks t ...
... Of all losses affecting PP, the largest is due to grazing (Banse 1994). In particular, herbivory by ubiquitous <200 µm heterotrophic protists (HP), such as ciliates and dinoflagellates, has been identified as the major fate of ocean PP (Calbet & Landry 2004, Sherr & Sherr 2009, Strom 2002). Thanks t ...
Full text PDF - Geochemical Perspectives
... glimpses into the author’s scientific life, how ideas were generated and pitfalls along the way. Perspectives articles are intended to appeal to the entire geochemical community, not only to experts. They are not reviews or monographs; they go beyond the current state of the art, providing opinions ...
... glimpses into the author’s scientific life, how ideas were generated and pitfalls along the way. Perspectives articles are intended to appeal to the entire geochemical community, not only to experts. They are not reviews or monographs; they go beyond the current state of the art, providing opinions ...
Book of Abstracts
... Prediction of the impact of global climate change on marine harmful algal blooms is fraught with difficulties. However, we can learn important lessons from the fossil record of dinoflagellate cysts, long-term monitoring programmes such as the Continuous Plankton Recorder surveys and short-term phyto ...
... Prediction of the impact of global climate change on marine harmful algal blooms is fraught with difficulties. However, we can learn important lessons from the fossil record of dinoflagellate cysts, long-term monitoring programmes such as the Continuous Plankton Recorder surveys and short-term phyto ...
Oxygen Sensitivity of Anammox and Coupled N
... Nutrient measurements indicate that 30–50% of the total nitrogen (N) loss in the ocean occurs in oxygen minimum zones (OMZs). This pelagic N-removal takes place within only ,0.1% of the ocean volume, hence moderate variations in the extent of OMZs due to global warming may have a large impact on the ...
... Nutrient measurements indicate that 30–50% of the total nitrogen (N) loss in the ocean occurs in oxygen minimum zones (OMZs). This pelagic N-removal takes place within only ,0.1% of the ocean volume, hence moderate variations in the extent of OMZs due to global warming may have a large impact on the ...
9th International Conference on Harmful Algal Blooms, 7-11
... Øjvind MOESTRUP (Denmark) Beatriz REGUERA (Spain) Sandra SHUMWAY (USA) Max TAYLOR (Canada) Takeshi YASUMOTO (Japan) ...
... Øjvind MOESTRUP (Denmark) Beatriz REGUERA (Spain) Sandra SHUMWAY (USA) Max TAYLOR (Canada) Takeshi YASUMOTO (Japan) ...
The distribution of reactive iron in northern Gulf of Alaska coastal
... samples, it is likely insignificant, especially compared to the leachable particulate Fe concentrations that are reported. Filters were leached following the procedure of Berger et al. (2008). Briefly, the leach method involved adding 1 mL of 25% acetic acid (HAc) with 0.02 M hydroxylamine hydrochlori ...
... samples, it is likely insignificant, especially compared to the leachable particulate Fe concentrations that are reported. Filters were leached following the procedure of Berger et al. (2008). Briefly, the leach method involved adding 1 mL of 25% acetic acid (HAc) with 0.02 M hydroxylamine hydrochlori ...
Mimicking the oxygen minimum zones: stimulating interaction of
... Activity of marine anammox bacteria under oxygen limitation Freshwater anammox bacteria are known to be reversibly inhibited by low oxygen concentrations (Strous et al., 1997). Nevertheless, marine anammox bacteria were detected in significant amounts in OMZs, not only in the OMZ core (with O2 ~ 1 m ...
... Activity of marine anammox bacteria under oxygen limitation Freshwater anammox bacteria are known to be reversibly inhibited by low oxygen concentrations (Strous et al., 1997). Nevertheless, marine anammox bacteria were detected in significant amounts in OMZs, not only in the OMZ core (with O2 ~ 1 m ...
the microbial loop - UMass Boston OpenCourseWare
... ecology. Before these techniques were introduced, microbial ecologists had to rely on laboratory culture techniques to estimate field populations. In the most probable number (mpn) technique, a field sample is diluted until the highest dilution factor that produces growth is found. From this dilutio ...
... ecology. Before these techniques were introduced, microbial ecologists had to rely on laboratory culture techniques to estimate field populations. In the most probable number (mpn) technique, a field sample is diluted until the highest dilution factor that produces growth is found. From this dilutio ...
IMPLICATIONS OF PHYTOPLANKTON CELL DEATH LOSSES TESIS DOCTORAL Autor: Sébastien Lasternas
... homogeneous, well-mixed environments, species that compete for the same resource cannot coexist, and one species should finally take advantage over the others. Thus, while in many natural waters, nutrients and light are the major limiting resources and natural phytoplankton population would be compe ...
... homogeneous, well-mixed environments, species that compete for the same resource cannot coexist, and one species should finally take advantage over the others. Thus, while in many natural waters, nutrients and light are the major limiting resources and natural phytoplankton population would be compe ...
Final Report - UCLA Institute of the Environment and
... The BWER was once a thriving set of coastal estuarine habitats that covered over 2,000 acres (Tsihrintzis 1996, Dark et al. 2011). Today, the size of the BWER has been reduced to roughly 600 acres, with only approximately 15 acres of tidally influenced estuarine habitat, several contiguous areas of ...
... The BWER was once a thriving set of coastal estuarine habitats that covered over 2,000 acres (Tsihrintzis 1996, Dark et al. 2011). Today, the size of the BWER has been reduced to roughly 600 acres, with only approximately 15 acres of tidally influenced estuarine habitat, several contiguous areas of ...
41 - Association for the Sciences of Limnology and Oceanography
... separated adequately, but the sensitivity was relatively low. Conversely, with 30 mM NaOH, important compounds were not well separated, but sensitivity was enhanced. We used 12 mM NaOH as the solvent and found that glucose was often the only monosaccharide present (see results), allowing us to use t ...
... separated adequately, but the sensitivity was relatively low. Conversely, with 30 mM NaOH, important compounds were not well separated, but sensitivity was enhanced. We used 12 mM NaOH as the solvent and found that glucose was often the only monosaccharide present (see results), allowing us to use t ...
Resource Supply Overrides Temperature as a Controlling Factor of
... favourable thermal ranges, there exists a positive, often exponential, increase in metabolic rate as temperature rises [1,2]. On-going and predicted ocean warming [3] prompts the question of how phytoplankton photosynthetic activity and growth may respond to increasing sea surface temperatures [4–6] ...
... favourable thermal ranges, there exists a positive, often exponential, increase in metabolic rate as temperature rises [1,2]. On-going and predicted ocean warming [3] prompts the question of how phytoplankton photosynthetic activity and growth may respond to increasing sea surface temperatures [4–6] ...
Biogeosciences Coastal hypoxia and sediment biogeochemistry
... to human alteration of coastal ecosystems and changes in oceanographic conditions due to global warming. Here we provide a concise review of the consequences of coastal hypoxia for sediment biogeochemistry. Changes in bottomwater oxygen levels have consequences for early diagenetic pathways (more an ...
... to human alteration of coastal ecosystems and changes in oceanographic conditions due to global warming. Here we provide a concise review of the consequences of coastal hypoxia for sediment biogeochemistry. Changes in bottomwater oxygen levels have consequences for early diagenetic pathways (more an ...
eXtra Botany - Oxford Academic
... conclusion is that iron uptake resembles Strategy I of vascular plants, with reduction of the predominant ferric iron in the medium just before or during transport (Anderson and Morel, 1982; Kustka et al., 2007; for a general view of marine microbial iron acquisition, see Desai et al., 2012). Kustka ...
... conclusion is that iron uptake resembles Strategy I of vascular plants, with reduction of the predominant ferric iron in the medium just before or during transport (Anderson and Morel, 1982; Kustka et al., 2007; for a general view of marine microbial iron acquisition, see Desai et al., 2012). Kustka ...
4.4. Phytoplankton and primary productivity off Northwest Africa The
... of the global marine production. Upwelling systems are a major source of the net primary production (NPP) in tropical and subtropical latitudes and sustain the most productive pelagic fisheries of the world, accounting for 20% to 30% of global marine fisheries production (FAO, 2012 ...
... of the global marine production. Upwelling systems are a major source of the net primary production (NPP) in tropical and subtropical latitudes and sustain the most productive pelagic fisheries of the world, accounting for 20% to 30% of global marine fisheries production (FAO, 2012 ...
Behavior, physiology and the niche of depth
... abundance as functions of hydrographic processes, nutrient distributions and the potential impact of herbivores. This understanding could be applied to determine the principal causes of HABs (e.g., eutrophication, upwelling, stratification, advection), to achieve better skill at forecasting their oc ...
... abundance as functions of hydrographic processes, nutrient distributions and the potential impact of herbivores. This understanding could be applied to determine the principal causes of HABs (e.g., eutrophication, upwelling, stratification, advection), to achieve better skill at forecasting their oc ...
Behavior, physiology and the niche of depth
... abundance as functions of hydrographic processes, nutrient distributions and the potential impact of herbivores. This understanding could be applied to determine the principal causes of HABs (e.g., eutrophication, upwelling, stratification, advection), to achieve better skill at forecasting their oc ...
... abundance as functions of hydrographic processes, nutrient distributions and the potential impact of herbivores. This understanding could be applied to determine the principal causes of HABs (e.g., eutrophication, upwelling, stratification, advection), to achieve better skill at forecasting their oc ...
50 - Association for the Sciences of Limnology and Oceanography
... possible to examine whether the changes in DO concentrations are a result of physical or biological processes by variations in d(O2 /Ar) values. Vertical variations in d(O2 /Ar) during 4 months were plotted in Fig. 2b. This figure shows that d(O2 /Ar) in the mixed layer is low during October, and th ...
... possible to examine whether the changes in DO concentrations are a result of physical or biological processes by variations in d(O2 /Ar) values. Vertical variations in d(O2 /Ar) during 4 months were plotted in Fig. 2b. This figure shows that d(O2 /Ar) in the mixed layer is low during October, and th ...
Marine Algal Toxins: Origins, Health Effects, and
... Marine algal toxins are responsible for an array of human illnesses associated with consumption of seafood and, in some cases, respiratory exposure to aerosolized toxins. Approximately 20% of all foodborne disease outbreaks in the United States result from the consumption of seafoods, with half of t ...
... Marine algal toxins are responsible for an array of human illnesses associated with consumption of seafood and, in some cases, respiratory exposure to aerosolized toxins. Approximately 20% of all foodborne disease outbreaks in the United States result from the consumption of seafoods, with half of t ...