Sentence examples for obstacles to migration from inspiring English sources

Box has been working with customers like Toyota and a large financial services company it couldn't name to help define the new service, and they've learned the processing time can vary dramatically, depending on the number of files involved and the various obstacles to migration.

Within rivers, there might be obstacles to migration that can function as phenotype-sorting mechanisms: for instance, some waterfalls may only allow the larger and stronger fish to ascend, effectively selecting against small size-at-maturity (selecting for swimming ability) (Brandt et al. 2005).

It is listed on Appendix I as this species has been categorized as being in danger of extinction throughout all or a significant proportion of their range and CMS Parties strive towards strictly protecting these animals, conserving or restoring the places where they live, mitigating obstacles to migration and controlling other factors that might endanger them.

It is listed on Appendix I as this species has been categorized as in danger of extinction throughout all or a significant proportion of its range and CMS Parties strive towards strictly protecting these animals, conserving or restoring the places where they live, mitigating obstacles to migration and controlling other factors that might endanger them.

Furthermore, the extensive dendritic branches of white matter neurons present a major obstacle to migration.

In Tanzania, as noted, the lack of English fluency represents a great obstacle to migration.

We have documented a significant phenotypic decrease in size-at-smolt transformation (downstream migration), size-at-first spawning and a change in the maturation reaction norms in a brown trout population following a change in size-selectivity of an obstacle to migration.

But Vance focusses on the obstacles to their migration.

Our other environmental campaigns have addressed travesties such as the depletion of the oceans, water pollution and obstacles to animals' migration paths.

Prime Minister Tony Blair said Tuesday that Britain had reached a "crunch point" in its dealing with outsiders and promised a "top to bottom" review of immigration policies, just four days before the expansion of the European Union removes obstacles to Continental migration.

Species of fish that have provided livelihoods and protein for millions of people (some 60m live in the lower Mekong basin) are unlikely to survive the obstacles to their migrations.Four dams have already been built and another is under construction on the northern half of the river in China, which is hungry for its hydroelectric potential.