For example, these two species have distinct differences with respect to the transition from earlywood
to latewood with Douglas-fir having an abrupt transition and white fir having a gradual transition.
Previous work on spin--spin relaxation rates in wood suggested that MR measurements could differentiate lumen water in earlywood
and latewood owing to different cell cavity sizes.
First, the data from five representative oak sites were collected and combined for a regional approach where the obtained chronologies displaying the earlywood
, latewood and annual growth (i.
A second reconstruction of PDSI values was made for east-central Mexico by using the earlywood
width chronology derived from ancient Douglas fir trees at Cuauhtemoc la Fragua, Puebla (Figure 1, panel B).
The anatomical demarcation between rings is readily identifiable in most conifers due to formation of denser, darker latewood at the end of the growing season that contrasts with the lighter earlywood
of the following year.
In members of the Thymelaeaceae, tori are especially well-developed in the latewood, and it is thought that this tissue provides a back-up water conducting system in case the earlywood
should become embolized (Dute et al.
looks light, whereas latewood looks dark (Zink-Sharp & Davis, 2008).
could be distinguished from latewood by its wider vessels and parenchyma and thinner-walled fibres (Fig.
Ring-porous woody species, with a band of wide vessels in earlywood
followed by much narrower vessels in latewood should be successful if plants maintain similar water status throughout the season.
Dates of fires were then recorded and seasonality of wounds, determined by location within earlywood
or latewood, was noted.
A clear boundary can exist between earlywood
and latewood, representing a false tree ring (Fritts, 2001).
10) Paint cracking, checking, and delamination of film layer from the wood substrate can be enhanced by large differences between the densities of earlywood
and latewood in wood species like southern pine.