Sentence examples for external ecological from inspiring English sources

We tested whether there was geographic variation in the proportion of bird- and bee-pollination syndrome species richness as a proxy for an external ecological driver.

Although the external (ecological) validity of the design is high, compared with double-blind trials such as provocation studies in the laboratory, the internal validity is lower.

The mutation, expansion and functional diversification of gene family reflect the evolution process of plants to adapt to their differing external ecological circumstances.

External ecological factors, such as abundant food sources in New Guinea, may also explain why male birds of paradise have been able to develop and maintain promiscuous breeding systems, magnificent plumages and elaborate courtship displays.

At least under conditions of gene flow, speciation will be driven by natural selection imposed by external ecological factors [ 5, 8, 9] and models generally agree that intrinsic hybrid inviability is not an initial event that drives speciation [ 1].

Changes in transmission and clearance may often affect recruitment and population dynamics of the host population, and, in turn, external ecological changes of the host population must very often affect transmission and clearance.

Two broad categories of factors have been suggested for explaining these ontogenetic patterns of disparity [ 20]: the external or "ecological" constraints such as the availability of ecological space [ 21, 22], and the internal constraints such as developmental, genetic or functional constraints [ 18, 23, 24].

Thus, experimental control, while enhancing internal validity, jeopardizes external and ecological validity by default.

Social capital is shaped by genealogical relationships and encompasses internal and economical and external and ecological relationships.

The intrinsic relationships within ecosocial theory most relevant to understanding perceived social capital in our study are internal and economical and external and ecological relationships.

Internal and economical, and external and ecological intrinsic relationships shape accountability and agency (who and what is responsible for social inequities in health and for rectifying them) [ 6] among members of society.