The structure of the limb joints and the enlarged ribs of Tiktaalik show that the animal could flex enough to clamber about, its front and rear limbs pushing the body along the bottoms of watercourses, at least in the shallows, and perhaps a bit on land, although its skeleton was not otherwise broadly adapted for that purpose.
Protopterus species build a nest in the form of a pit on the bottom of a watercourse.
Catchment interventions such as fencing of watercourses, streamside buffer strips and constructed wetlands have the potential to reduce faecal pollution of watercourses.
Human interventions in the water cycle (drainage of landscape, amelioration of watercourses, pollution of water, etc).
It was mixed with sand and fibrous materials for use in the construction of watercourses and levees and as mortar for bricks.
Such tipping points could include rapid dieback of forest, algal takeover of watercourses and mass coral reef death.
The route crosses no major watercourses, although creeks adjacent to or spanned by the route drain into the Pazinčica and Boljunčica rivers, or directly into the Adriatic Sea in the case of watercourses flowing down Učka's eastern slopes.
The A5 motorway runs through plains crossed by a number of watercourses and railways running perpendicular to the motorway route, requiring a variety of bridges and viaducts.
The plant is frequently seen occupying open waste spaces, banks of watercourses, grasslands, roadsides, and pathways [ 6, 7].
Order No. 1235 on the classification and registration of watercourses.
