Sentence examples for net speciation rate from inspiring English sources

The parameter can be regarded as explaining the net speciation rate (Nee 2006).

Differentiation in species diversification rate after each palaeo-dispersal was obtained by comparing the net speciation rate in two lineages after the divergence events.

Whereas Eupleridae, Mephitidae, Procyonidae and Ursidae each present a constant net speciation rate over their entire history, the remaining, generally larger, lineages display at least one inflection point in their lineages-through-time plots.

Following an initial rapid radiation, diversification rate analyses indicate a downturn in the net speciation rate within the past three million years as well as a possible increase some 18.0 million years ago; numerous diversification rate shifts within the order were also identified.

Stem group net speciation rates were calculated as Rst = log(N /t, where N is the number of extant species in the lineage, and t is the stem age [ 60].

Following the same relationship between net biodiversity rate, speciation rate, and extinction rate described above, speciation rate (S) is calculated as: S = R+E.

We used models assuming constant per lineage rates of speciation and extinction to estimate average net diversification rates (speciation rate minus extinction rate) for the LT flock and constituent clades (Table S2) [32].

The likelihood was calculated by comparing the observed species diversity of a clade to an expected species diversity given a stem group age and a net diversification rate (speciation rate - extinction rate) estimated from the whole tree.

(ii) Higher substitution rates could produce higher net diversification, both by increasing speciation rate and/ or by reducing extinction rate [ 6]. (iii) A third hypothesis rejects a causal relationship between substitution and diversification rates, and holds that this correlation is due to other factors that influence both rates simultaneously [ 131].

We also investigate a second potential correlate of variation in rate of molecular evolution: net diversification rate (i.e. speciation rate minus extinction rate).

Within Calycanthaceae, the low rate of net diversification is associated with a low speciation rate for the entire clade (0.0182 sp.myr−1) and near-zero extinction (0.0007 sp.myr−1).