ABSTRACT

Lastly, the frequent corollary of excess salts is often ignored, at least in maritime environments: many plants suffer because their roots are submerged in water. Scientists have tried their best to differentiate these two factors (salt and water) in the reduction of growth (Rogers and West 1993). The results obtained greatly depend on species. Some species have systems whereby they take in atmospheric oxygen, permitting them to tolerate submergence (Chap. 12, § 12.6), but others do not. Along with salinity, the duration of submergence seems to be a fundamental ecological criterion for distribution of plant species (Rogel et al. 2001b).