There is extensive documentation of a wide range of invertebrate bycatch in fishing gear (Ardron,... more There is extensive documentation of a wide range of invertebrate bycatch in fishing gear (Ardron, 2005; Gass and Willison, 2005; Mortensen et al., 2005; Shester and Ayers, 2005; Stone, 2006; Clark and Koslow, 2007; Edinger et al., 2007; Althaus et al., 2009; Clark and Rowden, 2009). Bottom fishing has been shown to not only damage or destroy long-lived emergent epifaunal animals such as corals and sponges, but also to harm the three-dimensional complexity of the seabed, reducing species diversity and faunal biomass ( ...
We present data for North Atlantic core Biogeochemical Ocean Flux Study (BOFS) 16K (59°N, 23°W, w... more We present data for North Atlantic core Biogeochemical Ocean Flux Study (BOFS) 16K (59°N, 23°W, water depth 2370 m) including coccolith flora, ∂18O, planktonic foraminiferal sea surface temperatures (SSTs) by FA20 and SIMMAX methods, and alkenone-based U37K, and U37K', SSTs. A good correlation exists between the abundances of cold water coccolith species and foraminifera, and a broad correlation exists between
Europe's deep-ocean margin stretches over a distance of 15,000 km along the Atlantic Ocean from t... more Europe's deep-ocean margin stretches over a distance of 15,000 km along the Atlantic Ocean from the Arctic to the that are constrained by chemical, physical, topographic, and geological factors and that contain a wealth of unknown species that thrive in insular habitats.
The north-east Atlantic continental margin displays a wide range of sediment transport systems wi... more The north-east Atlantic continental margin displays a wide range of sediment transport systems with both along-slope and down-slope processes. Off most of the north-west African margin, south of 26°N, upwelling produces elevated accumulation rates, although there is little¯uvial input. This area is subject to infrequent but large-scale mass movements, giving rise to debris¯ows and turbidity currents. The turbidity currents traverse the slope and deposit thick layers on the abyssal plains, while debris¯ows deposit on the continental slope and rise. From the Atlas Mountains northwards to 56°N, the margin is less prone to mass movements, but is cut by a large number of canyons, which also funnel turbidity currents to the abyssal plains. The presence of a lithospheric plate boundary off SW Iberia is believed to have led to high rates of sediment transport to the deep sea. Even larger quantities of coarse sediments have fed the canyons and abyssal plains in the Bay of Biscay as a result of drainage from melting icecaps. Bottom currents have built sediment waves off the African and Iberian margins, and created erosional furrows south of the Canaries. The Mediterranean out¯ow is a particularly strong bottom current near the Straits of Gibraltar, depositing sand waves and mud waves in the Gulf of Cadiz. North of 56°N, the margin is heavily in¯uenced by glacial and glaciomarine processes active during glacial times, which built glacial trough-mouth fans, such as the North Sea Fan, and left iceberg scour marks on the upper slope and shelf. Over a long period, especially during interglacials, this part of the margin has been greatly affected by along-slope currents, with less effect by turbidity currents than on the lower latitude margins. Large-scale mass movements are again a prominent feature, particularly off Norway and the Faeroes. Some of these mass movements have occurred during the Holocene, although high glacial sedimentation rates may have contributed to the instability.
Background: Environmental impacts of human activities on the deep seafloor are of increasing conc... more Background: Environmental impacts of human activities on the deep seafloor are of increasing concern. While activities within waters shallower than 200 m have been the focus of previous assessments of anthropogenic impacts, no study has quantified the extent of individual activities or determined the relative severity of each type of impact in the deep sea.
A series of cores from east of New Zealand have been examined to determine the paleoceanographic ... more A series of cores from east of New Zealand have been examined to determine the paleoceanographic history of the late Quaternary in the SW Pacific using planktonic foraminiferal data. Distinct shifts of species can be seen between glacial and interglacial times especially south of ...
Geological Society, London, Special Publications, 1987
... during glacial-interglacial transitions was given by Johnson & Rasmussen (1984) in the so... more ... during glacial-interglacial transitions was given by Johnson & Rasmussen (1984) in the southern Brazil Basin. ... area represents the end of the line for sediment deriving from the NW African shelf. ... lies between 30~ and 33~ and between 23~ and 26~ on the Madeira Abyssal Plain ...
There is extensive documentation of a wide range of invertebrate bycatch in fishing gear (Ardron,... more There is extensive documentation of a wide range of invertebrate bycatch in fishing gear (Ardron, 2005; Gass and Willison, 2005; Mortensen et al., 2005; Shester and Ayers, 2005; Stone, 2006; Clark and Koslow, 2007; Edinger et al., 2007; Althaus et al., 2009; Clark and Rowden, 2009). Bottom fishing has been shown to not only damage or destroy long-lived emergent epifaunal animals such as corals and sponges, but also to harm the three-dimensional complexity of the seabed, reducing species diversity and faunal biomass ( ...
We present data for North Atlantic core Biogeochemical Ocean Flux Study (BOFS) 16K (59°N, 23°W, w... more We present data for North Atlantic core Biogeochemical Ocean Flux Study (BOFS) 16K (59°N, 23°W, water depth 2370 m) including coccolith flora, ∂18O, planktonic foraminiferal sea surface temperatures (SSTs) by FA20 and SIMMAX methods, and alkenone-based U37K, and U37K', SSTs. A good correlation exists between the abundances of cold water coccolith species and foraminifera, and a broad correlation exists between
Europe's deep-ocean margin stretches over a distance of 15,000 km along the Atlantic Ocean from t... more Europe's deep-ocean margin stretches over a distance of 15,000 km along the Atlantic Ocean from the Arctic to the that are constrained by chemical, physical, topographic, and geological factors and that contain a wealth of unknown species that thrive in insular habitats.
The north-east Atlantic continental margin displays a wide range of sediment transport systems wi... more The north-east Atlantic continental margin displays a wide range of sediment transport systems with both along-slope and down-slope processes. Off most of the north-west African margin, south of 26°N, upwelling produces elevated accumulation rates, although there is little¯uvial input. This area is subject to infrequent but large-scale mass movements, giving rise to debris¯ows and turbidity currents. The turbidity currents traverse the slope and deposit thick layers on the abyssal plains, while debris¯ows deposit on the continental slope and rise. From the Atlas Mountains northwards to 56°N, the margin is less prone to mass movements, but is cut by a large number of canyons, which also funnel turbidity currents to the abyssal plains. The presence of a lithospheric plate boundary off SW Iberia is believed to have led to high rates of sediment transport to the deep sea. Even larger quantities of coarse sediments have fed the canyons and abyssal plains in the Bay of Biscay as a result of drainage from melting icecaps. Bottom currents have built sediment waves off the African and Iberian margins, and created erosional furrows south of the Canaries. The Mediterranean out¯ow is a particularly strong bottom current near the Straits of Gibraltar, depositing sand waves and mud waves in the Gulf of Cadiz. North of 56°N, the margin is heavily in¯uenced by glacial and glaciomarine processes active during glacial times, which built glacial trough-mouth fans, such as the North Sea Fan, and left iceberg scour marks on the upper slope and shelf. Over a long period, especially during interglacials, this part of the margin has been greatly affected by along-slope currents, with less effect by turbidity currents than on the lower latitude margins. Large-scale mass movements are again a prominent feature, particularly off Norway and the Faeroes. Some of these mass movements have occurred during the Holocene, although high glacial sedimentation rates may have contributed to the instability.
Background: Environmental impacts of human activities on the deep seafloor are of increasing conc... more Background: Environmental impacts of human activities on the deep seafloor are of increasing concern. While activities within waters shallower than 200 m have been the focus of previous assessments of anthropogenic impacts, no study has quantified the extent of individual activities or determined the relative severity of each type of impact in the deep sea.
A series of cores from east of New Zealand have been examined to determine the paleoceanographic ... more A series of cores from east of New Zealand have been examined to determine the paleoceanographic history of the late Quaternary in the SW Pacific using planktonic foraminiferal data. Distinct shifts of species can be seen between glacial and interglacial times especially south of ...
Geological Society, London, Special Publications, 1987
... during glacial-interglacial transitions was given by Johnson & Rasmussen (1984) in the so... more ... during glacial-interglacial transitions was given by Johnson & Rasmussen (1984) in the southern Brazil Basin. ... area represents the end of the line for sediment deriving from the NW African shelf. ... lies between 30~ and 33~ and between 23~ and 26~ on the Madeira Abyssal Plain ...
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