Not all fisheries research begins at a dinner table — but this study did. A recent study from the University of Alaska Fairbanks found a correlation between chinook salmon size and their population numbers in a changing climate, but that correlation has been clear to the people fishing Western Alaska waters for years.
from the University of Alaska Fairbanks found a correlation between chinook salmon size and their population numbers in a changing climate, but that correlation has been clear to the people fishing Western Alaska waters for years. The study took a new approach, looking to the knowledge of locals to inform its path of research.
At the time, Feddern was a postdoctoral researcher. She’s now a research fish biologist with the National Oceanic and Atmospheric Administration . She and the other researchers hosted a virtual listening session as part of the 2022 Alaska Forum on the Environment and held aof the fish. Many people observed that fish populating the rivers in recent years were smaller than what they’d remembered.
By using both types of data to examine a total of 26 chinook salmon populations, a link emerged between the decline in population productivity with smaller spawner body size and climate impacts. Salmon that are smaller are less likely to produce as many, or as nutritious of eggs as larger fish. In both rivers, the study was able to connect size to productivity, which represents the population’s ability to sustain itself over time.
Feddern said that they were able to find success in honoring the knowledge of others by informing a path of research with the testimonies of those impacted by the changing climate.
A News Chinook Salmon Climate Change Kuskokwim River Megan Feddern Salmon University Of Alaska Fairbanks Yukon River
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