Temporal shifts in intraguild predation pressure between beluga whales and Greenland halibut in a changing Arctic.

ABSTRACT: Asymmetrical intraguild predation (AIGP), which combines both predation and competition between predator species, is pervasive in nature with relative strengths varying by prey availability. But with species redistributions associated with climate change, the response by endemic predators within an AIGP context to changing biotic-abiotic conditions over time (i.e. seasonal and decadal) has yet to be quantified. Furthermore, little is known on AIGP dynamics in ecosystems undergoing rapid directional change such as the Arctic. Here, we investigate the flexibility of AIGP among two predators in the same trophic guild: beluga (Delphinapterus leucas) and Greenland halibut (Reinhardtius hippoglossoides), by season and over 30 years in Cumberland Sound-a system where forage fish capelin (Mallotus

SUBMITTER: Yurkowski DJ 

PROVIDER: S-EPMC5719374 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature