Subject: Population: N Atlantic humpback whales (fwd)

Mike Williamson (
Wed, 24 Feb 1999 10:06:36 -0500 (EST)

---------- Forwarded message ----------
Date: Tue, 16 Feb 1999 14:32:53 -0500
From: Phil Clapham <>
Reply-To: Marine Mammals Research and Conservation Discussion
Subject: N Atlantic humpback whales

A couple of notes on, and one minor correction to, the recent CRS
summary, regarding North Atlantic humpback whales:

The new estimate of abundance is indeed 10,600, but it's worth noting
that the 95% c.i. is pretty tight: 9,300 to 12,100.  This was recently
published by Smith et al. (1999, Mar Mammal Sci 15: 1-32), and it is
broadly consistent with a male-only mark-recapture estimate calculated
using genotype data (Palsboll et al. 1997, Nature 388: 767-769).

These estimates come from the Years of the North Atlantic Humpback
(YONAH) project, which was a seven-nation (not six) effort.  Also, I
should point put that YONAH was not initiated solely by the Center for
Coastal Studies (CCS), but by a collaboration involving CCS, the
Northeast Fisheries Science Center (Woods Hole) and the Sea Mammal
Research Unit (UK).

Phil Clapham


Phillip J. Clapham, Ph.D.
Large Whale Biology Program
Northeast Fisheries Science Center
166 Water Street
Woods Hole, MA 02543

tel (508) 495-2316
fax (508) 495-2066