Abstract
Differences in water deficit adaptation during early growth of Brazilian dry forest Caatinga trees
Highlights
Caatinga is the predominant biome in the semiarid region of north-eastern Brazil
We studied the morphological characteristics of leaves, which may be related to drought adaptation strategies
To calculate the daily amount of water to be applied to each pot, the surface area and total amount of water to be applied divided by the number of days of the experiment were taken into account
Summary
Caatinga is the predominant biome in the semiarid region of north-eastern Brazil. Most of its area presents average annual rainfall lower than 1,000 mm (Menezes et al 2012). Due to variable soil depth, which is most often low (Menezes et al 2013), and local climate characteristics, the water availability is concentrated in some months but non-homogeneous over Caatinga. Water stress is one of the major limiting factors for plant growth and development (Shane et al 2010).In Caatinga, the availability of water affects the abundance of species in a population (Andrade et al 2009). In such conditions the plants must balance strategies to maintain growth and to survive (Claeys and Inzé 2013). Studies of the ecosystem have led us to suggest that these mechanisms are present but with variable intensities over Caatinga species
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