From the Hensen net toward four-dimensional biological oceanography

Wiebe, Peter H.; Benfield, Mark C.

doi:10.1016/s0079-6611(02)00140-4

Cited by 264 publications

(158 citation statements)

References 220 publications

Supporting

Mentioning

157

Contrasting

Unclassified

Order By: Relevance

“…This new approach has many potential applications. For example, when combined with underwater electronics, 3-D RI imaging of live phytoplankton could be of particular interest to marine microbiologists trying to study biological oceanography [67] and plankton ecology [68]. In addition, 3-D RI tomogram of individual phytoplankton can also be utilized for automated plankton identification [69] or the study of fluid dynamics of plankton [62,70,71].…”

Section: Discussionmentioning

confidence: 99%

High-Resolution 3-D Refractive Index Tomography and 2-D Synthetic Aperture Imaging of Live Phytoplankton

Lee¹,

K²,

Mubarok³

et al. 2014

Journal of the Optical Society of Korea

View full text Add to dashboard Cite

Optical measurements of the morphological and biochemical imaging of phytoplankton are presented. Employing quantitative phase imaging techniques, 3-D refractive index maps and high-resolution 2-D quantitative phase images of individual live phytoplankton are simultaneously obtained without exogenous labeling agents. In addition, biochemical information of individual phytoplankton including volume, mass, and density of individual phytoplankton are also quantitatively obtained from the measured refractive index distributions. We expect the present method to become a powerful tool for the study of phytoplankton.

show abstract

Section: Discussionmentioning

confidence: 99%

High-Resolution 3-D Refractive Index Tomography and 2-D Synthetic Aperture Imaging of Live Phytoplankton

Lee¹,

K²,

Mubarok³

et al. 2014

Journal of the Optical Society of Korea

View full text Add to dashboard Cite

show abstract

“…Vertical distributions are also finely structured and the need to quantify these 3-D patterns has encouraged development of sampling gears that can properly quantify zooplankton abundance and community structure (Wiebe et al 2002). The development of multiple net sampling systems, designed to discriminate discrete depth strata, has improved the precision with which we can determine the abundance and depth distribution of zooplankton (see review by Wiebe and Benfield 2003). The choice of mesh size and net type is a basic consideration with regard to achieving appropriate sampling efficiency (Pearcy et al 1983).…”

Section: Introductionmentioning

confidence: 99%

Characterisation of large zooplankton sampled with two different gears during midwinter in Rijpfjorden, Svalbard

Błachowiak‐Samołyk¹,

Zwolicki²,

Webster³

et al. 2017

Polish Polar Research

View full text Add to dashboard Cite

During a midwinter cruise north of 80 o N to Rijpfjorden, Svalbard, the composition and vertical distribution of the zooplankton community were studied using two different samplers 1) a vertically hauled multiple plankton sampler (MPS; mouth area 0.25 m², mesh size 200 μm) and 2) a horizontally towed Methot Isaacs Kidd trawl (MIK; mouth area 3.14 m², mesh size 1500 μm). Our results revealed substantially higher species diversity (49 taxa) than if a single sampler (MPS: 38 taxa, MIK: 28) had been used. The youngest stage present (CIII) of Calanus spp. (including C. finmarchicus and C. glacialis) was sampled exclusively by the MPS, and the frequency of CIV copepodites in MPS was double that than in MIK samples. In contrast, catches of the CV-CVI copepodites of Calanus spp. were substantially higher in the MIK samples (3-fold and 5-fold higher for adult males and females, respectively). The MIK sampling clearly showed that the highest abundances of all three Thysanoessa spp. were in the upper layers, although there was a tendency for the larger-sized euphausiids to occur deeper. Consistent patterns for the vertical distributions of the large zooplankters (e.g. ctenophores, euphausiids) collected by the MPS and MIK samplers provided more complete data on their abundances and sizes than obtained by the single net. Possible 460mechanisms contributing to the observed patterns of distribution, e.g. high abundances of both Calanus spp. and their predators (ctenophores and chaetognaths) in the upper water layers during midwinter are discussed.

show abstract

“…[1], [2]) and today digital technology allows in-situ imaging combined with data from a complex network of environmental sensors. The optical systems image objects dispersed in water, while sensors record a multitude of associated hydrographic parameters.…”

Section: Introductionmentioning

confidence: 99%