Big Picture
The animals that are the main subjects of study for this paper.
What are brachiopods?
Where samples were taken from (a region in eastern North America).
What is the Appalachian Basin?
The main conclusion of this paper is that after the extinction, surviving species mostly kept the same habitat. What is this pattern called?
What is niche conservatism?
One hypothesis was that after a mass extinction event, different species swap in from elsewhere. This process of swapping is often called.
What is faunal replacement or faunal turnover?
To test niche conservatism, the authors used this kind of statistical test which typically produces an r^2 value.
What is correlation/regression?
The two environmental gradients that are used to label the axes of the graphs.
What are onshore-offshore and distribution frequency?
The major extinction interval in the Late Devonian that this study focuses on.
What is the Lower Kellwasser event?
The method used to place samples on a map- closer points have more similar species composition.
What is nMDS (non-metric multidimensional scaling)?
After the extinction pulse, many of the dominant brachiopods belonged to this group.
What are productids?