reasssement of the photosynthetic quotient
... estimate that errois between 5-15% could commonly occur between oxygen and the 14C method due to the uncertainty over whether the 14C technique is measuring gross or net production and as such would be insufficient to be the principal cause of the high observed PQ values. Further support for this co ...
... estimate that errois between 5-15% could commonly occur between oxygen and the 14C method due to the uncertainty over whether the 14C technique is measuring gross or net production and as such would be insufficient to be the principal cause of the high observed PQ values. Further support for this co ...
Fisheries Fact Sheet - Algae
... algae and photosynthetic bacteria. Although they all share similar habitats, seagrasses are the only true plants found in the marine environment. Algae lack the features of true flowering plants such as roots, stems and vascular tissue. Instead of roots, they anchor themselves to rocks or other orga ...
... algae and photosynthetic bacteria. Although they all share similar habitats, seagrasses are the only true plants found in the marine environment. Algae lack the features of true flowering plants such as roots, stems and vascular tissue. Instead of roots, they anchor themselves to rocks or other orga ...
Algae in Fresh Water Ecosystem (PDF Available)
... of phytoplankton. Phosphorus (P) and Nitrogen (N) are often considered as the principal limiting nutrients for aquatic algal production (Cecilia, 2011 and Hutchinson, 1967). Generally aquatic ecosystems receive excess of this nutrient through untreated domestic sewage and agriculture runoff (Shinde ...
... of phytoplankton. Phosphorus (P) and Nitrogen (N) are often considered as the principal limiting nutrients for aquatic algal production (Cecilia, 2011 and Hutchinson, 1967). Generally aquatic ecosystems receive excess of this nutrient through untreated domestic sewage and agriculture runoff (Shinde ...
Lab/Fieldwork Activity Example
... plants present. The determination the chlorophyll a pigment, using the fluorimetric method, represents the most common method of assessing the production of phytoplankton in the sea. Color sensors on satellites also measure chlorophyll concentrations, however only of surface waters, and consecutive ...
... plants present. The determination the chlorophyll a pigment, using the fluorimetric method, represents the most common method of assessing the production of phytoplankton in the sea. Color sensors on satellites also measure chlorophyll concentrations, however only of surface waters, and consecutive ...
Harmful Algal Blooms in Southern Californian Waters
... food webs, a few are capable of producing substances that are noxious or toxic, resulting in illness and even death of marine life and occasionally humans who consume contaminated seafood. When microalgae create these conditions, we refer to them as harmful algal blooms (HABs). An older term often u ...
... food webs, a few are capable of producing substances that are noxious or toxic, resulting in illness and even death of marine life and occasionally humans who consume contaminated seafood. When microalgae create these conditions, we refer to them as harmful algal blooms (HABs). An older term often u ...
Marine Primary Productivity: Measurements and Variability
... primary producers. Primary producers however, immediately respire some of the organic matter they make to meet their own energy needs, so it is not available as food to other organisms. We are more interested, however, in Net primary production, which is the organic matter that is left over or the c ...
... primary producers. Primary producers however, immediately respire some of the organic matter they make to meet their own energy needs, so it is not available as food to other organisms. We are more interested, however, in Net primary production, which is the organic matter that is left over or the c ...
PICES XV S9-2846 Poster The role of temperature, salinity, light
... ammonium or 20 M urea as the sole nitrogen source. Experiments conducted at high (120 µE·m-2·s-1) and low (40 µE·m-2·s-1) photosynthetic photon flux densities (PPFDs), demonstrate that P. cuspidata grew significantly faster at high PPFD, but showed no preference for one nitrogen source over the oth ...
... ammonium or 20 M urea as the sole nitrogen source. Experiments conducted at high (120 µE·m-2·s-1) and low (40 µE·m-2·s-1) photosynthetic photon flux densities (PPFDs), demonstrate that P. cuspidata grew significantly faster at high PPFD, but showed no preference for one nitrogen source over the oth ...
Life in the Oceanic Realms - Indian Academy of Sciences
... waters, relatively nutrient-poor open oceanic waters, coral reef atolls, metal-rich hydrothermal vent fluids with temperatures of 200-350oC, cold-seeps, estuaries, mangrove swamps, intertidal beaches and rocky shores. Oceans are home to some of the most diverse and unique life forms. This article is ...
... waters, relatively nutrient-poor open oceanic waters, coral reef atolls, metal-rich hydrothermal vent fluids with temperatures of 200-350oC, cold-seeps, estuaries, mangrove swamps, intertidal beaches and rocky shores. Oceans are home to some of the most diverse and unique life forms. This article is ...
Aerosol pollutants can have long-range effects on ocean oxygen
... ‘oxygen minimum zones’, and organisms that live within them require special adaptations in order to survive. Some of the world’s biggest oxygen minimum zones are found in the Pacific Ocean, where oxygen concentrations have decreased considerably in recent years. These are mostly formed naturally, al ...
... ‘oxygen minimum zones’, and organisms that live within them require special adaptations in order to survive. Some of the world’s biggest oxygen minimum zones are found in the Pacific Ocean, where oxygen concentrations have decreased considerably in recent years. These are mostly formed naturally, al ...
marine ecology-final 2008 Lecture 8
... At depth (below photic zone), DOC derived mostly from sinking detrital material. ...
... At depth (below photic zone), DOC derived mostly from sinking detrital material. ...
Biological Formation of Organic Substances from Particulate
... for formation of DOM from plant debris in soils or algal biomass in waters and/or sediments. Note that rates of superoxide production normalized to the proportion of metabolically active cells is detected to vary between 0.02 0.02 amol cell−1 hour−1 (mean ± standard error) and 19.4 5.2 amol cell ...
... for formation of DOM from plant debris in soils or algal biomass in waters and/or sediments. Note that rates of superoxide production normalized to the proportion of metabolically active cells is detected to vary between 0.02 0.02 amol cell−1 hour−1 (mean ± standard error) and 19.4 5.2 amol cell ...
Free Radicals and other reactive species in Disease
... Free radicals and other reactive species are constantly generated in the human body. Some are made by ‘accidents of chemistry’; for example, leakage of electrons directly on to O2 from the intermediate electron carriers of the mitochondrial electron transport chain generates a steady stream of O2. 2 ...
... Free radicals and other reactive species are constantly generated in the human body. Some are made by ‘accidents of chemistry’; for example, leakage of electrons directly on to O2 from the intermediate electron carriers of the mitochondrial electron transport chain generates a steady stream of O2. 2 ...