The dynamics of the marine nitrogen cycle across the last deglaciation
... and denitrification required to match the observed sedimentary ı 15 N changes between 30 kyr B.P. and the late Holocene. This is achieved by optimizing a set of seven parameters that describe the strengths of three ocean-internal N feedbacks and the response of the oceanic N cycle to four external f ...
... and denitrification required to match the observed sedimentary ı 15 N changes between 30 kyr B.P. and the late Holocene. This is achieved by optimizing a set of seven parameters that describe the strengths of three ocean-internal N feedbacks and the response of the oceanic N cycle to four external f ...
A scientific critique of oceanic iron fertilization as a climate
... oceans, iron is necessary for a number of cellular functions including the synthesis of chlorophyll, a pigment required for photosynthesis. In about one third of the world ocean, the major nutrients required for phytoplankton growth, such as nitrates and phosphates, are in plentiful supply and yet t ...
... oceans, iron is necessary for a number of cellular functions including the synthesis of chlorophyll, a pigment required for photosynthesis. In about one third of the world ocean, the major nutrients required for phytoplankton growth, such as nitrates and phosphates, are in plentiful supply and yet t ...
ABSTRACT
... Zeng for his valuable support, guidance, and patience over years. His optimism, patience and scientific supervision have fostered my enthusiasm for the research presented here. I would like to thank my committee members: Professor Eugenia Kalnay, Raghu Murtugudde, Christopher Justice, and Dr. G. Jam ...
... Zeng for his valuable support, guidance, and patience over years. His optimism, patience and scientific supervision have fostered my enthusiasm for the research presented here. I would like to thank my committee members: Professor Eugenia Kalnay, Raghu Murtugudde, Christopher Justice, and Dr. G. Jam ...
Coral communities of Biscayne Bay, Florida and adjacent o¡shore
... preservation and protection of the South Florida regional ecosystem. The multiple components of this plan have been designed to restore historic hydrologic conditions and increase water storage and supply for the natural system as well as for urban and agricultural use. One of the proposed goals of ...
... preservation and protection of the South Florida regional ecosystem. The multiple components of this plan have been designed to restore historic hydrologic conditions and increase water storage and supply for the natural system as well as for urban and agricultural use. One of the proposed goals of ...
A scientific critique of oceanic iron fertilization as a climate change
... oceans, iron is necessary for a number of cellular functions including the synthesis of chlorophyll, a pigment required for photosynthesis. In about one third of the world ocean, the major nutrients required for phytoplankton growth, such as nitrates and phosphates, are in plentiful supply and yet t ...
... oceans, iron is necessary for a number of cellular functions including the synthesis of chlorophyll, a pigment required for photosynthesis. In about one third of the world ocean, the major nutrients required for phytoplankton growth, such as nitrates and phosphates, are in plentiful supply and yet t ...
Ocean and Coastal Acidification off New England and Nova Scotia
... Network (NECAN) study area where ocean acidification will be more readily discernible than could be the case for the complex nearshore environments. The rate of ocean acidification of these waters is similar to the rate of atmospheric CO2 increase further modified by the effects of multidecadal osci ...
... Network (NECAN) study area where ocean acidification will be more readily discernible than could be the case for the complex nearshore environments. The rate of ocean acidification of these waters is similar to the rate of atmospheric CO2 increase further modified by the effects of multidecadal osci ...
SECTION HEADING - School of Ocean and Earth Science and
... ecosystem services fundamental to global geochemical cycles. For example, deep-sea sediments are major sites of nutrient recycling, and are responsible for much of the carbon burial occurring on the planet. (4) Because deep-sea ecosystems are significantly buffered from the high-frequency variations ...
... ecosystem services fundamental to global geochemical cycles. For example, deep-sea sediments are major sites of nutrient recycling, and are responsible for much of the carbon burial occurring on the planet. (4) Because deep-sea ecosystems are significantly buffered from the high-frequency variations ...
Present and Future Impacts of Ocean Acidification Report of the
... that will reduce potential negative impacts of ocean acidification? Ocean acidification-relevant indicators beyond basic water-column carbonate chemistry have yet to be adequately developed. Parameters that can be measured routinely and that detect biotic effects of ocean acidification reliably, su ...
... that will reduce potential negative impacts of ocean acidification? Ocean acidification-relevant indicators beyond basic water-column carbonate chemistry have yet to be adequately developed. Parameters that can be measured routinely and that detect biotic effects of ocean acidification reliably, su ...
Baltic photic sand dominated by stable
... 20% of mud/silt/clay fraction (<63 µm), and the proportion of sand (grain size 0.063–2 mm) exceeds 70% of the combined gravel and sand fraction. Stable aggregations of unattached perennial vegetation covers at least 10%, while perennial attached erect groups cover less than 10% of the bottom. The bi ...
... 20% of mud/silt/clay fraction (<63 µm), and the proportion of sand (grain size 0.063–2 mm) exceeds 70% of the combined gravel and sand fraction. Stable aggregations of unattached perennial vegetation covers at least 10%, while perennial attached erect groups cover less than 10% of the bottom. The bi ...
Ocean acidification in the Arabian Sea and the Red - BORA
... Surface summer distribution of (A) SST by ◦ C and (B) SSS in the upper 50 m of the Arabian Sea and the Red Sea. . . . . . . . . . . Distribution of CT [µmol kg−1 ] in the upper 50 m of the Arabian Sea and the Red Sea during (A) winter and (B) summer seasons. . . The relation between (A) CT and NO3 , ...
... Surface summer distribution of (A) SST by ◦ C and (B) SSS in the upper 50 m of the Arabian Sea and the Red Sea. . . . . . . . . . . Distribution of CT [µmol kg−1 ] in the upper 50 m of the Arabian Sea and the Red Sea during (A) winter and (B) summer seasons. . . The relation between (A) CT and NO3 , ...
Chapter 46 – Hydrothermal vents and cold seeps
... methane oxidation by microbial consortia in sediments (Boetius and Wenzhöfer, 2013). Recent evidence shows that hydrothermal vent plumes sustain microbial communities with potential connections to zooplankton communities and biogeochemical fluxes in the deep ocean (Dick et al., 2013). The biological ...
... methane oxidation by microbial consortia in sediments (Boetius and Wenzhöfer, 2013). Recent evidence shows that hydrothermal vent plumes sustain microbial communities with potential connections to zooplankton communities and biogeochemical fluxes in the deep ocean (Dick et al., 2013). The biological ...
WOR 1 - World Ocean Review
... The oceans, however, are vast and largely inaccessible, and our awareness and understanding of them are correspondingly small. What’s more, they have hardly any advocates or lobby to represent their interests. This is especially remarkable when we consider that the seas crucially influence our clima ...
... The oceans, however, are vast and largely inaccessible, and our awareness and understanding of them are correspondingly small. What’s more, they have hardly any advocates or lobby to represent their interests. This is especially remarkable when we consider that the seas crucially influence our clima ...
Using EUNIS habitat classification for benthic - Archimer
... categories and respective codes. For this reason substantial efforts have been made to include information on marine benthic habitats from different regions, aiming to provide a comprehensive geographical coverage of European seas. However, there still remain many concerns on its applicability as on ...
... categories and respective codes. For this reason substantial efforts have been made to include information on marine benthic habitats from different regions, aiming to provide a comprehensive geographical coverage of European seas. However, there still remain many concerns on its applicability as on ...
Microbial Ecosystem Functions Along the Steep Oxygen
... driver of ecosystem functions and hence a prerequisite for sustaining plant and animal life in the sea and on Earth. Despite its ecological importance, information on the complexity of microbial functions and how these are related to environmental conditions is limited. Due to climate change and eut ...
... driver of ecosystem functions and hence a prerequisite for sustaining plant and animal life in the sea and on Earth. Despite its ecological importance, information on the complexity of microbial functions and how these are related to environmental conditions is limited. Due to climate change and eut ...
Post-glacial flooding of the Beringia Land Bridge dated to 11,000 cal
... ages are calibrated using the approach as for Core 2-PC1 described above. One of two dates at 417 cm depth is, however, clearly too old when compared to the other radiocarbon samples (Table 1; Fig. 3B). This date is considered to have been derived from a reworked shell and therefore treated as an ou ...
... ages are calibrated using the approach as for Core 2-PC1 described above. One of two dates at 417 cm depth is, however, clearly too old when compared to the other radiocarbon samples (Table 1; Fig. 3B). This date is considered to have been derived from a reworked shell and therefore treated as an ou ...
DEEP SEA. WASTE DISPOSAL
... each of the four areas of science will rely heavily on information from research in the other fields of study. The need for an increased research effort Work in connexion with deep ocean waste disposal will be intimately related to other oceanic research undertaken for practical purposes or in quest ...
... each of the four areas of science will rely heavily on information from research in the other fields of study. The need for an increased research effort Work in connexion with deep ocean waste disposal will be intimately related to other oceanic research undertaken for practical purposes or in quest ...
A new imperative for improving management of large marine
... deforestation as they relate to these threats are also addressed. GEF projects are implemented by UNDP, UNEP, and the World Bank and expanded opportunities exist for participation by other agencies. The only new funding source to emerge from the 1992 Earth Summit, GEF today counts 171 countries as m ...
... deforestation as they relate to these threats are also addressed. GEF projects are implemented by UNDP, UNEP, and the World Bank and expanded opportunities exist for participation by other agencies. The only new funding source to emerge from the 1992 Earth Summit, GEF today counts 171 countries as m ...
nitrogen fixation in an estuarine environment
... may inhabit the sediment-water interface. One might reason that organic estuarine sediment is an unlikely habitat for nitrogen-fixing organisms since this environment is normally considered to be rich in the fixed nitrogen Howcvcr, nitrogen. measured by chemical analysis is not necessarily identical ...
... may inhabit the sediment-water interface. One might reason that organic estuarine sediment is an unlikely habitat for nitrogen-fixing organisms since this environment is normally considered to be rich in the fixed nitrogen Howcvcr, nitrogen. measured by chemical analysis is not necessarily identical ...
Registered talks and posters, OMARC conference
... Pressurised coring and ‘in-situ’ monitoring systems for deep-sea research on gas hydrates, geomicrobiology and other specific ecosystem research - one case study: Anaximander Mountains, Eastern Mediterranean Deep sea environment: may it be a final sink of Persistent Organic Pollutants? The case of t ...
... Pressurised coring and ‘in-situ’ monitoring systems for deep-sea research on gas hydrates, geomicrobiology and other specific ecosystem research - one case study: Anaximander Mountains, Eastern Mediterranean Deep sea environment: may it be a final sink of Persistent Organic Pollutants? The case of t ...
Bermuda Atlantic Time-series Study (BATS): Years 16-20
... BOUSHABA, K., and M. PASCUAL. 2005. Dynamics of the 'echo' effect in a phytoplankton system with nitrogen fixation. Bulletin of Mathematical Biology 67: 487-507. COLMAN, A., R. BLAKE, D. KARL, M. FOGEL, and K. TUREKIAN. 2005. Marine phosphate oxygen isotopes and organic matter remineralization in th ...
... BOUSHABA, K., and M. PASCUAL. 2005. Dynamics of the 'echo' effect in a phytoplankton system with nitrogen fixation. Bulletin of Mathematical Biology 67: 487-507. COLMAN, A., R. BLAKE, D. KARL, M. FOGEL, and K. TUREKIAN. 2005. Marine phosphate oxygen isotopes and organic matter remineralization in th ...
Projecting future climate change: implications of carbon cycle model
... here were also used in the IPCC TAR [Prentice et al., 2001], however, the climate projections were not. Increasing levels of detail are being required to simulate mechanisms hypothesized to be important for global carbon cycle, and to allow comparison to observational data on the scales on which the ...
... here were also used in the IPCC TAR [Prentice et al., 2001], however, the climate projections were not. Increasing levels of detail are being required to simulate mechanisms hypothesized to be important for global carbon cycle, and to allow comparison to observational data on the scales on which the ...
The distribution of macrofauna on the inner continental
... The benthic macrofauna included annelids, crustaceans, mollusks, echinoderms, cnidarians, nemerteans, cephalochordates, sipunculids and bryozoans. A total of 37,213 individuals belonging to 1112 species were collected during the two sampling campaigns, of which 24,165 individuals and 855 species wer ...
... The benthic macrofauna included annelids, crustaceans, mollusks, echinoderms, cnidarians, nemerteans, cephalochordates, sipunculids and bryozoans. A total of 37,213 individuals belonging to 1112 species were collected during the two sampling campaigns, of which 24,165 individuals and 855 species wer ...
Resource Supply Overrides Temperature as a Controlling Factor of
... ocean warming. Determining the temperature sensitivity of phytoplankton metabolism and growth is of special importance because this group of organisms is responsible for nearly half of global primary production, sustains most marine food webs, and contributes to regulate the exchange of CO2 between ...
... ocean warming. Determining the temperature sensitivity of phytoplankton metabolism and growth is of special importance because this group of organisms is responsible for nearly half of global primary production, sustains most marine food webs, and contributes to regulate the exchange of CO2 between ...
Flux and composition of settling particles across
... The GoL margin is located in the Western Mediterranean and extends from Cap Croisette in the northeast to Cap de Creus in the southwest (Fig. 1). It is a wide, progressive margin incised by numerous submarine canyons extending down to the Algero-Balearic basin. The continental shelf is feded by diff ...
... The GoL margin is located in the Western Mediterranean and extends from Cap Croisette in the northeast to Cap de Creus in the southwest (Fig. 1). It is a wide, progressive margin incised by numerous submarine canyons extending down to the Algero-Balearic basin. The continental shelf is feded by diff ...
The Possible Importance of Silicon in Marine Eutrophication
... Diatoms require the major nutrients nitrogen, phosphorus and silicon for their photosynthesis; diatoms use silicon in approximately a one-to-one atomic ratio with nitrogen (Redfield et al., 1963). The flagellates associated with coastal eutrophication effects need only nitrogen and phosphorus, toget ...
... Diatoms require the major nutrients nitrogen, phosphorus and silicon for their photosynthesis; diatoms use silicon in approximately a one-to-one atomic ratio with nitrogen (Redfield et al., 1963). The flagellates associated with coastal eutrophication effects need only nitrogen and phosphorus, toget ...