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Acousmed Project. Optimization of Survey design by means of indicator geostatistic and Q(s) curves. Marco Barra, Gualtiero Basilone , Angelo Bonanno IAMC-CNR Capo Granitola. Study Area. Sampling period: 2002 - 2008 Month: June – July (October 2004) Surveyed area (NM 2 ): ≈ 2658

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acousmed project

Acousmed Project

Optimization of Survey design bymeansof indicator geostatistic and Q(s) curves

Marco Barra, Gualtiero Basilone, Angelo Bonanno

IAMC-CNR Capo Granitola

study area
StudyArea
  • Sampling period: 2002 - 2008
  • Month: June – July (October 2004)
  • Surveyed area (NM2): ≈ 2658

- 2239 NM2 parallel transect;

-Max tr. length: 24 NM

-Min tr length: 7 NM

- 418 NM2 Zigzag.

  • Intertransect distance: 5 NM
  • Echo sounder:

- Simrad EK500 (2002-2004)

- Simrad EK60 (2005-2008)

  • Life stage: adults, juveniles (2004)
geostatistical analisys indicator
GeostatisticalAnalisys (Indicator)
  • Software used: RGeoS
  • Structural tools: Semivariance
  • Treshold selection criterion:
    • z such that Q(z) ≈ 80% of Q(0)
  • Analyzed dataset:
    • Parallel transect design:
      • Anchovy: ton/NM2 (2002-2008)
      • Sardine: ton/NM2 (2002-2008)
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