Imaging of plankton specimens with the lightframe on-sight keyspecies investigation (LOKI) system (bibtex)
by Jan Schulz, Kristina Barz, Patricia Ayon, Andree Luedtke, Oliver Zielinski, Dirk Mengedoht, Hans-Juergen Hirche
Abstract:
Zooplankton is a key element in aquatic food webs. Rapid mapping of abundance, combined with information on taxonomic and size composition is necessary to understand ecosystem dynamics. Classical sampling with towed plankton nets does not allow resolving fine scale distributions along hydrographic gradients (e.g. fronts and clines) although such structures determine community assemblages and trophic interactions. Furthermore, sample analysis is labor intensive and time consuming. To overcome these shortcomings, Lightframe On-sight Keyspecies Investigation (LOKI), a new imaging device, was developed for sensing spatial variability of plankton distribution on scales below the 1 m level. Here, we give a brief description of the LOKI system and demonstrate its potential for taxonomic identification using images of various zooplankton taxa collected in the south east Pacific.
Reference:
Jan Schulz, Kristina Barz, Patricia Ayon, Andree Luedtke, Oliver Zielinski, Dirk Mengedoht, Hans-Juergen Hirche, "Imaging of plankton specimens with the lightframe on-sight keyspecies investigation (LOKI) system", In Journal of the European Optical Society, vol. Rapid Publications 5, 2010.
Bibtex Entry:
@ARTICLE{Schulz2010a,
  author = {Schulz, Jan and Barz, Kristina and Ayon, Patricia and Luedtke, Andree
	and Zielinski, Oliver and Mengedoht, Dirk and Hirche, Hans-Juergen},
  title = {{Imaging of plankton specimens with the lightframe on-sight keyspecies
	investigation (LOKI) system}},
  journal = {Journal of the European Optical Society},
  year = {2010},
  volume = {Rapid Publications 5},
  abstract = {Zooplankton is a key element in aquatic food webs. Rapid mapping of
	abundance, combined with information on taxonomic and size composition
	is necessary to understand ecosystem dynamics. Classical sampling
	with towed plankton nets does not allow resolving fine scale distributions
	along hydrographic gradients (e.g. fronts and clines) although such
	structures determine community assemblages and trophic interactions.
	Furthermore, sample analysis is labor intensive and time consuming.
	To overcome these shortcomings, Lightframe On-sight Keyspecies Investigation
	(LOKI), a new imaging device, was developed for sensing spatial variability
	of plankton distribution on scales below the 1 m level. Here, we
	give a brief description of the LOKI system and demonstrate its potential
	for taxonomic identification using images of various zooplankton
	taxa collected in the south east Pacific.},
  doi = {10.2971/jeos.2010.10017s},
  keywords = {zooplankton,imaging,image analysis,lightframe on-sight keyspecies
	investigation (LOKI),small scale distribution},
  owner = {pmania},
  timestamp = {2012.11.06},
  url = {https://www.jeos.org/index.php/jeos{\_}rp/article/view/10017s/569}
}
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