Calving rate decline in humpback whales (Megaptera novaeangliae) of northern British Columbia, Canada.

The population dynamics of large mammals are characterized by highly variable and relatively poor juvenile survival (Baker & Thompson, [8]; Caughley, [20]; Clutton-Brock & Lonergan, [28]; Clutton-Brock, Price, Albon, & Jewell, [29]; Kraus, Thompson, Kunkele, & Trillmich, [58]). However, the recent monitoring update from Glacier Bay did report an alarming decline in sightings of humpback adults and calves and a steady decline in crude calving rate since 2011 (Neilson & Gabriele, [60]). High pregnancy rates in humpback whales (Megaptera novaeangliae) around the Western Antarctic Peninsula, evidence of a rapidly growing population. [Extracted from the article]

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