early spring phytoplankton dynamics in the subpolar north atlantic
... decreasing phytoplankton grazing losses below the very low but positive rates of winter phytoplankton growth, thus allowing blooms to initiate during winter. Behrenfeld (2010) further postulated that the gradual seasonal shoaling of the mixed layer “re-couples” predators with their prey, resulting i ...
... decreasing phytoplankton grazing losses below the very low but positive rates of winter phytoplankton growth, thus allowing blooms to initiate during winter. Behrenfeld (2010) further postulated that the gradual seasonal shoaling of the mixed layer “re-couples” predators with their prey, resulting i ...
Role of the low-latitude ocean
... why OGCMs are more low-latitude sensitive than box models. We compare the low-latitude sensitivities of the 3-box model of Toggweiler et al. [2003], the 5-box model with an explicit thermocline box of Follows et al. [2002], and a 3-dimensional abiotic carbon cycling model based on the OGCM of Primea ...
... why OGCMs are more low-latitude sensitive than box models. We compare the low-latitude sensitivities of the 3-box model of Toggweiler et al. [2003], the 5-box model with an explicit thermocline box of Follows et al. [2002], and a 3-dimensional abiotic carbon cycling model based on the OGCM of Primea ...
Benthic protists: the under
... Marine protist diversity inventories have largely focused on planktonic environments, while benthic protists have received relatively little attention. We therefore hypothesize that current diversity surveys have only skimmed the surface of protist diversity in marine sediments, which may harbor gre ...
... Marine protist diversity inventories have largely focused on planktonic environments, while benthic protists have received relatively little attention. We therefore hypothesize that current diversity surveys have only skimmed the surface of protist diversity in marine sediments, which may harbor gre ...
Benthic protists: the under-charted majority
... Marine protist diversity inventories have largely focused on planktonic environments, while benthic protists have received relatively little attention. We therefore hypothesize that current diversity surveys have only skimmed the surface of protist diversity in marine sediments, which may harbor gre ...
... Marine protist diversity inventories have largely focused on planktonic environments, while benthic protists have received relatively little attention. We therefore hypothesize that current diversity surveys have only skimmed the surface of protist diversity in marine sediments, which may harbor gre ...
Internal report - The Marine Life Information Network
... extremes are a shift from a high to a low energy environment (or vice versa). The biota associated with these extremes will be markedly different as will the substrate, sediment supply/transport and associated seabed elevation changes. The potential exists for profound changes (e.g. coastal erosion/ ...
... extremes are a shift from a high to a low energy environment (or vice versa). The biota associated with these extremes will be markedly different as will the substrate, sediment supply/transport and associated seabed elevation changes. The potential exists for profound changes (e.g. coastal erosion/ ...
The Impacts of Shoreline Development on Shallow-water Benthic Communities in the Patuxent River, MD
... Natural coastal habitats throughout Chesapeake Bay are increasingly threatened with shoreline modification due to population growth and rising rates of development. The replacement of these natural coastlines with hardened structures such as seawalls (bulkheads) and stone revetments (riprap) not onl ...
... Natural coastal habitats throughout Chesapeake Bay are increasingly threatened with shoreline modification due to population growth and rising rates of development. The replacement of these natural coastlines with hardened structures such as seawalls (bulkheads) and stone revetments (riprap) not onl ...
Low Res - SAHFOS
... The fossil record and present field and laboratory observations confirm links between key environmental drivers and responses of ocean ecosystems to climate change (high confidence). For millions of years in Earth history, natural climate change at rates slower than today’s anthropogenic change has ...
... The fossil record and present field and laboratory observations confirm links between key environmental drivers and responses of ocean ecosystems to climate change (high confidence). For millions of years in Earth history, natural climate change at rates slower than today’s anthropogenic change has ...
Ocean systems. In: Climate Change 2014
... The fossil record and present field and laboratory observations confirm links between key environmental drivers and responses of ocean ecosystems to climate change (high confidence). For millions of years in Earth history, natural climate change at rates slower than today’s anthropogenic change has ...
... The fossil record and present field and laboratory observations confirm links between key environmental drivers and responses of ocean ecosystems to climate change (high confidence). For millions of years in Earth history, natural climate change at rates slower than today’s anthropogenic change has ...
Paleoceanographical proxies based on deep-sea
... by the availability of food particles within the sediment, whereas in eutrophic systems a critical oxygen level decides down to what depth in the sediment most species can live (Figure 1). Some authors have suggested that oxygen concentration is not a major limiting factor for many taxa (e.g., Rathb ...
... by the availability of food particles within the sediment, whereas in eutrophic systems a critical oxygen level decides down to what depth in the sediment most species can live (Figure 1). Some authors have suggested that oxygen concentration is not a major limiting factor for many taxa (e.g., Rathb ...
6.19 The Oceanic CaCO3 Cycle - Earth and Environmental Sciences
... zone is also of interest, its definition suffers from the same problems associated with the use of the terms “lysocline” and “compensation depth,” namely, the boundaries are gradual rather than sharp. While determinations of sediment CaCO3 content as a function of water depth in today’s ocean or at ...
... zone is also of interest, its definition suffers from the same problems associated with the use of the terms “lysocline” and “compensation depth,” namely, the boundaries are gradual rather than sharp. While determinations of sediment CaCO3 content as a function of water depth in today’s ocean or at ...
3.1 Sediments and Water Quality
... between grains of sediment (pore water), and may bind them so strongly that their movement in the environment is limited (United States [U.S.] Environmental Protection Agency 2008a). Conversely, fine-grained sediments are easily disturbed by currents and bottom-dwelling organisms (Hedges and Oades 1 ...
... between grains of sediment (pore water), and may bind them so strongly that their movement in the environment is limited (United States [U.S.] Environmental Protection Agency 2008a). Conversely, fine-grained sediments are easily disturbed by currents and bottom-dwelling organisms (Hedges and Oades 1 ...
The Mg isotopic composition of Cenozoic seawater – evidence for a
... Cenozoic record with sedimentation rates averaging 2–3 cm/kyr at site 807 and <1 cm/kyr at site 1265. Although making up <50% of the carbonate sediment, foraminiferal calcite contributes >90% of Mg in bulk pelagic carbonate sediments, due to the high ratio of Mg to Ca in foraminifera (1–5 mmol mol−1 ...
... Cenozoic record with sedimentation rates averaging 2–3 cm/kyr at site 807 and <1 cm/kyr at site 1265. Although making up <50% of the carbonate sediment, foraminiferal calcite contributes >90% of Mg in bulk pelagic carbonate sediments, due to the high ratio of Mg to Ca in foraminifera (1–5 mmol mol−1 ...
Mangrove Workshop Manual - Smithsonian Environmental
... well as mature-phase species. They not only help form these environments, they create habitats for a diverse and characteristic community, including numerous mangrove-dependent organisms. The term “mangrove” refers to an ecological rather than a taxonomic assemblage of plants. Worldwide, 34 species ...
... well as mature-phase species. They not only help form these environments, they create habitats for a diverse and characteristic community, including numerous mangrove-dependent organisms. The term “mangrove” refers to an ecological rather than a taxonomic assemblage of plants. Worldwide, 34 species ...
zmt Report 2011/2012
... To support the institute´s management and Supervisory Board in relation to major research-related topics an internal Scientific Council was established in 2012. The ZMT’s ombudsman, nominated for the first time in 2011 and in charge of overseeing the institute’s compliance with the Rules of Good Sci ...
... To support the institute´s management and Supervisory Board in relation to major research-related topics an internal Scientific Council was established in 2012. The ZMT’s ombudsman, nominated for the first time in 2011 and in charge of overseeing the institute’s compliance with the Rules of Good Sci ...
(pdf)
... community in all samples was dominated by diatoms and Phaeocystis sp. However, the relative abundance of these phytoplankton taxa differed significantly between CO2 treatments. Taxonomic pigment analysis and direct microscopic examination of samples revealed that the abundance of diatoms decreased b ...
... community in all samples was dominated by diatoms and Phaeocystis sp. However, the relative abundance of these phytoplankton taxa differed significantly between CO2 treatments. Taxonomic pigment analysis and direct microscopic examination of samples revealed that the abundance of diatoms decreased b ...
7th gd Ecosystems And Biomes
... and other nonwoody plants. Grasslands close to the equator are called savannas. They have shrubs and trees along with grass. Most have fertile soil and grow good ...
... and other nonwoody plants. Grasslands close to the equator are called savannas. They have shrubs and trees along with grass. Most have fertile soil and grow good ...
CHAPTER 22. BIOGENIC AND TERRIGENOUS SEDIMENTATION
... ton, and terrigenous clays and quartz coming mostly from the Amazon and other South American Rivers, although trace amounts may come from Africa by eolian transport (Balsam et al., 1995). We assume that the geographic area covered by the sites is small enough that the input of biogenic carbonate fro ...
... ton, and terrigenous clays and quartz coming mostly from the Amazon and other South American Rivers, although trace amounts may come from Africa by eolian transport (Balsam et al., 1995). We assume that the geographic area covered by the sites is small enough that the input of biogenic carbonate fro ...
Sodasorb Manual - Shearwater Research
... resting conditions, R is 0.8: that is, only 80% as much CO2 is produced as oxygen is consumed. The value of R changes according to dietary intake. Since the respiratory system is an open system which is adjusted to maintain a constant PCO2, the ultimate distribution of carbon dioxide throughout the ...
... resting conditions, R is 0.8: that is, only 80% as much CO2 is produced as oxygen is consumed. The value of R changes according to dietary intake. Since the respiratory system is an open system which is adjusted to maintain a constant PCO2, the ultimate distribution of carbon dioxide throughout the ...
Geochemical conditions in continental margin - E
... Marine biogeochemical cycling of the highly dynamic key nutrients carbon, nitrogen and phosphorus starts with continuous production of organic substances and remineralization in the oceanic water column. Phosphorus is an essential nutrient required by all living organisms and is suspected to control ...
... Marine biogeochemical cycling of the highly dynamic key nutrients carbon, nitrogen and phosphorus starts with continuous production of organic substances and remineralization in the oceanic water column. Phosphorus is an essential nutrient required by all living organisms and is suspected to control ...
Sea Search Manual
... different areas of the state. These include the far east, far west, the bays and inlets, the coastal areas facing Bass Strait, and a special area around Wilsons Promontory which is an important transition zone separating species in the east from those in the west. Across Victoria there are 30 marine ...
... different areas of the state. These include the far east, far west, the bays and inlets, the coastal areas facing Bass Strait, and a special area around Wilsons Promontory which is an important transition zone separating species in the east from those in the west. Across Victoria there are 30 marine ...
40. Neogene Controls on Hydrothermal Activity and
... commonly clay-bearing or clayey nannofossil ooze. The only other lithologies are a thin layer of unfossiliferous pelagic clay at the top of Site 597 and thin chalky layers immediately above basement at Site 598, 600, and 601 (Fig. 3). Foraminifers are rare to common in the calcareous sections but us ...
... commonly clay-bearing or clayey nannofossil ooze. The only other lithologies are a thin layer of unfossiliferous pelagic clay at the top of Site 597 and thin chalky layers immediately above basement at Site 598, 600, and 601 (Fig. 3). Foraminifers are rare to common in the calcareous sections but us ...
- University of Cambridge
... ABSTR AC T. Hothouse climates in Earth’s geologic past, such as the Eocene epoch, are thought to have been caused by the release of large amounts of carbon dioxide and/or methane, which had been stored as carbon in biogenic gases and organic matter in sediments, to the ocean-atmosphere system. Howe ...
... ABSTR AC T. Hothouse climates in Earth’s geologic past, such as the Eocene epoch, are thought to have been caused by the release of large amounts of carbon dioxide and/or methane, which had been stored as carbon in biogenic gases and organic matter in sediments, to the ocean-atmosphere system. Howe ...
Biological and physical processes in and around Astoria submarine
... that the river plume had the highest levels of both total and dissolved organic carbon. Previous studies have shown that potential sources of carbon in marine and coastal ecosystems will have different d13C signatures, and they used the carbon isotopic composition of suspended particulate organic ma ...
... that the river plume had the highest levels of both total and dissolved organic carbon. Previous studies have shown that potential sources of carbon in marine and coastal ecosystems will have different d13C signatures, and they used the carbon isotopic composition of suspended particulate organic ma ...
Frontline Observations on Climate Change and
... The United Nations Conference on Environment and Development (UNCED) convened in 1992 in Rio focused attention on the need for reversing decades of environmental degradation and moving the world toward sustainable development. Follow-on targets prompted by UNCED and the 2002 World Summit on Sustaina ...
... The United Nations Conference on Environment and Development (UNCED) convened in 1992 in Rio focused attention on the need for reversing decades of environmental degradation and moving the world toward sustainable development. Follow-on targets prompted by UNCED and the 2002 World Summit on Sustaina ...
Abrupt Ocean Anoxia During the Late Ordovician Mass Extinction
... events including a greenhouse to icehouse climatic transition, extensive continental glaciation (peaking in the Hirnantian) and associated glacioeustatic sea-level changes despite estimated high atmospheric CO2 levels (Yapp and Poths, 1992; Berner and Kothavala, 2001), a major biologic diversity inc ...
... events including a greenhouse to icehouse climatic transition, extensive continental glaciation (peaking in the Hirnantian) and associated glacioeustatic sea-level changes despite estimated high atmospheric CO2 levels (Yapp and Poths, 1992; Berner and Kothavala, 2001), a major biologic diversity inc ...