The phrase "artificial structures is" is not correct in written English due to subject-verb agreement issues.
It can be used if the subject is singular, but "artificial structures" is plural, so it should be "artificial structures are."
Example: "Artificial structures are becoming more common in urban environments."
Alternatives: "man-made structures are" or "synthetic structures are".
Manipulating the propagation of electromagnetic waves through sub-wavelength-sized artificial structures is the core function of metamaterials1,2,3.
The ecology of assemblages of species associated with such artificial structures is, however, poorly known.
However, monitoring the "human structure" and how they interact with and control artificial structures is crucial for optimizing system performance and functionality.
The introduction of complex substrata to otherwise topographically simple artificial structures is a promising means of actively influencing assemblage composition.
The numbers of hard coastal artificial structures is increasing worldwide and there is now cumulative evidence that they support assemblages that are less diverse than natural shores.
Opportunities to include eco-friendly (green engineering) solutions, in the repair and revitalisation of existing artificial structures, is necessary in any new proposed urban and industrial development and expansion.
Artificial structures are currently seen as poor habitats for marine organisms.
Artificial structures are often fabricated on surfaces to change the surface morphology with nanostructures being especially favored.
Additionally, artificial structures are known to be colonized by non-indigenous epibiota [12], [13], [31].
Ecological traps form when artificial structures are added to natural habitats and induce mismatches between habitat preferences and fitness consequences.
If species that colonize artificial structures are able to spread to rocky shores, the proximity of near-shore artificial structures could threaten native rocky shore communities.
