التفاصيل البيبلوغرافية
| العنوان: |
Relative infaunal bivalve density assessed from split beam echosounder angular information |
| المؤلفون: |
Noela Sánchez-Carnero, Daniel Rodríguez-Pérez, Nuria Zaragozá, Victor Espinosa, Juan Freire |
| المصدر: |
Oceanologia, Vol 56, Iss 3, Pp 497-522 (2014) |
| بيانات النشر: |
Elsevier, 2014. |
| سنة النشر: |
2014 |
| المجموعة: |
LCC:Oceanography |
| مصطلحات موضوعية: |
Shellfish beds, Stock assessment, Split-beam echosounder, Angular information, Haralick textural features, Benthic habitat mapping, Oceanography, GC1-1581 |
| الوصف: |
Management of shellfish resources requires a spatial approach where mapping is a key tool. Acoustic techniques have been rarely used to map infaunal organisms with a patchy distribution. We propose and test the use of split-beam echosounder angular information to assess razor shell presence and relative density. Our statistical approach combines textural analysis of angular echograms, standard unsupervised multivariate methods and hierarchical classification through dendrograms to identify groups of locations with similar clam densities. The statistical analyses show that the classification is consistent with groundtruthing data and that results are insensitive to boat motion or seabed granulometry. The method developed here constitutes a promising tool for assessing the relative density of razor clam grounds. |
| نوع الوثيقة: |
article |
| وصف الملف: |
electronic resource |
| اللغة: |
English |
| تدمد: |
0078-3234 |
| Relation: |
http://www.sciencedirect.com/science/article/pii/S0078323414500280; https://doaj.org/toc/0078-3234 |
| DOI: |
10.5697/oc.55-3.497 |
| URL الوصول: |
https://doaj.org/article/c8b24a1f728e4a95a5d48c1ddc376372 |
| رقم الانضمام: |
edsdoj.8b24a1f728e4a95a5d48c1ddc376372 |
| قاعدة البيانات: |
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