Humpback whale Megaptera novaeangliae (Cetartiodactyla: Balaenopteridae) group sizes in line transect ship surveys: An evaluation of observer errors

ABSTRACT Accurate estimates of group sizes through line transect sampling methods are important to correctly ascertain the abundance of animals that occur in groups. Since the average observed group size is a component of the distance sampling formula, bias in these data leads to biased abundance es...

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Bibliographic Details
Main Authors: Guilherme A. Bortolotto, Daniel Danilewicz, Artur Andriolo, Alexandre N. Zerbini
Format: Article
Language:English
Published: Pensoft Publishers 2016-01-01
Series:Zoologia (Curitiba)
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000204001&lng=en&tlng=en