Biodiversity Patterns and Processes on the Mid‐Atlantic Ridge

Vecchione, Michael; Bergstad, Odd Aksel; Byrkjedal, Ingvar; Falkenhaug, Tone; Gebruk, Andrey; Godø, Olav Rune; Gíslason, Ástþór; Heino, Mikko; Høines, Åge S.; Menezes, Gui; Piatkowski, Uwe; Priede, Imants George; Skov, Henrik; Søiland, Henrik; Sutton, Tracey; Wenneck, Thomas de Lange

doi:10.1002/9781444325508.ch6

Cited by 28 publications

(18 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…the 2004 G.O. Sars expedition provided ample evidence that the region surrounding the CGFZ represents a 'biological hotspot' across multiple trophic levels(Vecchione et al 2010a).Gaard et al (2008) found that phytoplankton biomass was highest in the Frontal Region (as previously defined), which agreed with earlier findings o fClark et al (2001) andGallienne et al (2001). This was attributed to shallow hydrographic stratification leading to increased nutrient availability within the euphotic zone.Gislason et al (2008) noted higher values of chlorophyll a and higher egg production rates of the copepod Calanus finmarchicus near the CGFZ.…”

supporting

confidence: 68%

“…Besides the MAR itself, oceanic fronts are believed to be the main potential biogeographic barriers in the open North Atlantic (Owen 1981, Angel 1993. The results o f the GO Sars expedition revealed increased production and macrofaunal biomass near the Subpolar Front (e.g., Bergstad et al 2008, Vecchione et al 2010a, which was one of the research foci of this return voyage. The…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Deep-pelagic (0–3000m) fish assemblage structure over the Mid-Atlantic Ridge in the area of the Charlie-Gibbs Fracture Zone

Cook

Sutton

Galbraith

et al. 2013

Deep Sea Research Part II: Topical Studies in Oceanography

Self Cite

View full text Add to dashboard Cite

show abstract

supporting

confidence: 68%

Section: Introductionmentioning

confidence: 99%

Deep-pelagic (0–3000m) fish assemblage structure over the Mid-Atlantic Ridge in the area of the Charlie-Gibbs Fracture Zone

Cook

Sutton

Galbraith

et al. 2013

Deep Sea Research Part II: Topical Studies in Oceanography

Self Cite

View full text Add to dashboard Cite

show abstract

“…The surface migrating depth and the upper thermocline correlate, giving seasonal differences in distribution and abundance of sound scatterers, also encountered on the Mid-Atlantic Ridge (Vecchione et al 2010), with vertical migration reaching more superficial layers in summer. These results reveal the wide range of temperatures endured by myctophids with maximum values well above 25°C in summer.…”

Section: Discussionmentioning

confidence: 92%

Acoustic detection of mesopelagic fishes in scattering layers of the Balearic Sea (western Mediterranean)

Peña

Olivar

Balbín

et al. 2014

Can. J. Fish. Aquat. Sci.

View full text Add to dashboard Cite

The distributions of micronekton layers in the Balearic Sea (western Mediterranean) were investigated by acoustic methods. Two multidisciplinary surveys were carried out in late autumn 2009 and summer 2010, recording acoustic, biological, and hydrographic data. We described acoustic layers, migratory behavior, sampled species, and water masses processes. Acoustic modeling of gas-bearing organisms was employed to explain differences between acoustic estimates and sampled abundances. The influence of environmental variables on the vertical distribution and migration pattern of these organisms was analyzed. The thermocline depth was related to the preferred depth for migrating myctophids, while nonmigrant species dwelled in the oxygen minimum zone of the water column both in late autumn and summer periods.Résumé : La distribution des couches de micronecton a été étudiée par méthode acoustique dans la mer des Baléares (Méditer-ranée occidentale). Deux campagnes multidisciplinaires ont été menées en automne 2009 et en été 2010, par mesures acoustique et échantillonnages biologique et hydrologique. La description des couches acoustiques, le comportement migratoire, les espèces échantillonnées et les couches d'eau sont fournies. La modélisation acoustique des organismes de type gas bearing est utilisée pour expliquer le mascage qui conduit á des différences avec les abondances mesurées. Leur préférence pour certaines gammes de variables externes dans la distribution verticale et le model de migration de ces organismes est analysée. La profondeur de la thermocline a été associée á la profondeur de migration préférée des myctophidés, de même la zone de la colonne d'eau présentant le minimum d'oxygène dissous correspond á la zone de résidence des espèces non-migrantes, tous les deux en automne et en été.

show abstract

“…The surface mixing indicated by the fronts may be responsible for the increased zooplankton and pelagic fish populations observed over the Reykjanes Ridge using acoustic sensors (Vecchione et al, 2010). The primary production over the Reykjanes Ridge, while lower than within the SPF, is significantly higher than the off-ridge regions (Tilstone et al, in press).…”

Section: Fronts Along the Irminger Current / Reykjanes Ridgementioning

confidence: 99%

Thermal front variability along the North Atlantic Current observed using microwave and infrared satellite data

Miller

Read

Dale

2013

Deep Sea Research Part II: Topical Studies in Oceanography

View full text Add to dashboard Cite

Thermal fronts detected using multiple satellite sensors have been integrated to provide new information on the spatial and seasonal distribution of oceanic fronts in the North Atlantic. The branching of the North Atlantic Current (NAC) as it encounters the Mid-Atlantic Ridge (MAR) is reflected in surface thermal fronts, which preferentially occur at the Charlie Gibbs Fracture Zone (CGFZ) and several smaller fracture zones. North of the CGFZ there are few thermal fronts, contrasting with the region to the south, where there are frequent surface thermal fronts that are persistent seasonally and interannually. The alignment of the fronts confirms that the shallower Reykjanes Ridge north of the CGFZ is more of a barrier to water movements than the ridge to the south. Comparison of front distributions with satellite altimetry data indicates that the MAR influence on deep ocean currents is also frequently exhibited in surface temperature. The improved spatial and temporal resolution of the front analysis has revealed consistent seasonality in the branching patterns. These results contribute to our understanding of the variability of the NAC, and the techniques for visualising oceanic fronts can be applied in other regions to reveal details of surface currents that cannot be resolved using satellite altimetry or in situ measurements.

show abstract

Biodiversity Patterns and Processes on the Mid‐Atlantic Ridge

Cited by 28 publications

References 69 publications

Deep-pelagic (0–3000m) fish assemblage structure over the Mid-Atlantic Ridge in the area of the Charlie-Gibbs Fracture Zone

Deep-pelagic (0–3000m) fish assemblage structure over the Mid-Atlantic Ridge in the area of the Charlie-Gibbs Fracture Zone

Acoustic detection of mesopelagic fishes in scattering layers of the Balearic Sea (western Mediterranean)

Thermal front variability along the North Atlantic Current observed using microwave and infrared satellite data

Contact Info

Product

Resources

About