According to this mechanism, prime quality individuals are better able to cope with costs of migration and costs of earliness (costs of advancing arrival raise faster for individuals of poor than high quality; Møller 1994b; Kokko 1999).
An American official here said there were only "possibilities at the margins" for the United States' agenda of advancing trade, security and migration control.
Through current case studies, contributors examine the interplay among migration, development, culture, family reunification, human rights, and government, all with the aim of advancing more effective solutions to international migration issues.
Natural disasters lead to mass environmental disruption, displacement and migration of people, and advancing the process of urbanisation.
The global forum represents an important first step in our efforts to harness the power of migration to advance development.
Within 48 h, migration of swarm rings had advanced to a diameter of 1.02 ± 0.08 cm for D. aromatica, 0.94 ± 0.05 cm for D. agitata, and 2.68 ± 0.33 cm for A. suillum, indicating a motility response in these organisms to a substrate concentration gradient.
This cross-shelf glaciation is more pronounced during late Miocene and early Pliocene along Blosseville Kyst and around the Pliocene/Pleistocene boundary off Scoresby Sund; indicating a northward migration of the glacial advance.
There are multiple observations around the globe showing that in many avian species, both the timing of migration and breeding have advanced, due to warmer springs.
However, while the migration phenology of some species advanced during the last 20 years, the migratory behaviour of other migrants relies on endogenous rhythms or is driven by environmental factors which are not affected by climate change [ 18, 19].
The second has been the movement of well paying jobs overseas – the "migration of relatively more labor-intensive sectors from advanced economies to emerging economies.
