Sentence examples for important ecological problems from inspiring English sources
Several important ecological problems are related to the hierarchical organization of ecosystems.
Sinceone of the most important ecological problems associated with the populations dynamical system is to study the long-term coexistence of all the involved species, such problem in the nondelayed discrete systems had already attracted much attention and thereby many excellent results had appeared ([6 11]).
Expansion of invasive species inducing sands stabilization is becoming an important ecological problem in coastal dunes in some parts of the world.
We are interested in solvability of a multiple optimal stopping problem that has not been focused on so far, which is related to animal migration: an important ecological problem.
The initial condition of equation (1.2) is x ( k ) = ϕ ( k ) > 0 for − τ ≤ k ≤ 0. In the study of biological systems, an important ecological problem is concerned with the existence of positive periodic solutions or positive almost periodic solutions.
An important class of ecological problems concerns propagation processes.
Dispersal of clonal fragments has resulted in a rapid expansion of the geographical range of A. philoxeroides in China [20], [25], where the species has become an important ecological and agricultural problem in both terrestrial and aquatic habitats [19], [26].
Understanding and quantifying sediment loads is important in watersheds with highly erodible materials, which will eventually cause environmental and ecological problems.
This is especially important in Mexico, where there is a strong need for economical solutions to ecological problems.
It is also important to consider the whole river as an integrated unit to solve the ecological problems created by the basin states.
Hence, by establishing a differential equation model to study the ecological problems and a suitable model to study the dynamic relationship between the phytoplankton and zooplankton is still very important.
