Journal article

Stage-dependent effects of river flow and temperature regimes on the growth dynamics of an apex predator

Rick J Stoffels, Kyle E Weatherman, Nick R Bond, John R Morrongiello, Jason D Thiem, Gavin Butler, Wayne Koster, R Keller Kopf, Nicole McCasker, Qifeng Ye, Brenton Zampatti, Ben Broadhurst

Global Change Biology | WILEY | Published : 2020

Abstract

In the world's rivers, alteration of flow is a major driver of biodiversity decline. Global warming is now affecting the thermal and hydrological regimes of rivers, compounding the threat and complicating conservation planning. To inform management under a non‐stationary climate, we must improve our understanding of how flow and thermal regimes interact to affect the population dynamics of riverine biota. We used long‐term growth biochronologies, spanning 34 years and 400,000 km2, to model the growth dynamics of a long‐lived, apex predator (Murray cod) as a function of factors extrinsic (river discharge; air temperature; sub‐catchment) and intrinsic (age; individual) to the population. Annua..

View full abstract

University of Melbourne Researchers