Health of Grey whales declines

Geplaatst Geplaatst in grijze walvis

Three years of “health check-ups” on Oregon’s summer resident gray whales shows a compelling relationship between whales’ overall body condition and changing ocean conditions that likely limited availability of prey for the mammals, a new study from Oregon State University indicates. >> read more …

What killed hundreds of mighty gray whales? Beloved Puget Sound visitors may hold clues

Geplaatst Geplaatst in grijze walvis

The mighty grays undertake one of the longest migrations of any mammal, traveling from Arctic feeding grounds to calving areas in Mexico, then back north again come spring. A small group of about a dozen whales pause along the way, sticking around in northern Puget Sound typically from March through May, though some arrive earlier, […]

Gray whales strand more often on days with increased levels of atmospheric radio-frequency noise

Geplaatst Geplaatst in grijze walvis, onderzoek

We use 31 years of gray whale (Eschrichtius robustus) stranding data to build on earlier work that found a positive relationship between strandings and sunspot counts. The increase in strandings under high solar activity is best explained by an effect on the sensor, not on the magnetic field itself. >> read more …