The phrase "are linked to massive" is correct and usable in written English.
It can be used when discussing connections or relationships between two or more subjects, particularly in contexts involving significant or large-scale issues.
Example: "The recent studies indicate that environmental changes are linked to massive shifts in wildlife populations."
Alternatives: "are associated with significant" or "are connected to large-scale".
And the department was alarmed to find that 20 firefighters had come down with sarcoidosis in the first two years after Sept. 11, "a substantial increase from prior years" that was believed to be linked to "massive dust inhalation" at ground zero.
The Anthropocene is linked to massive land use changes as a result of human activity.
It is believed that one of the reasons for the Nazca's disappearance can be linked to massive regional climate change".
The science is increasingly clear when it comes to neonics; they've been linked to massive bee kills and they can interfere with the brain functions that bees need to navigate, forage and reproduce.
A recent study showed that the 2007 Luebo outbreak in DRC was linked to massive fruit bat migration, strongly suggesting for the first time that humans could be infected directly by bats [25].
In Ethiopia, excessive government bureaucracies were linked to massive delays in procurement of insecticide-treated nets [ 6, 21].
The fall of rates in the USA after 2001 was linked to massive drops in the use of hormone replacement treatment (HRT) after publication of the Women's Health Initiative trial, and falls of rates have affected breast cancer of all stages and of all sizes [ 31, 62].
Thus growth factor abrogation [ 82, 83], death induction through activation of the TNF-α receptor [ 89, 90] or genotoxic stress [ 91, 92] all are linked to the induction of massive ROS production, which is essential for cell death.
A prominent example in this respect may be the decline of monarch butterfly populations in the US which has been linked to the massive loss of their food plants upon widespread adoption of HR crops.
