Sentence examples for active burrowing from inspiring English sources

Preceding periods lack such bioturbation of the sea floor, making the presence of active burrowing animals before the Cambrian unlikely (Fedonkin et al. 2007; Brasier 2009).

As active burrowing requires a hydrostatic skeleton, muscle tissue and a nervous system, the logical conclusion is that nervous systems originated before the Cambrian, either in the Ediacaran (635 541 Ma) or even the Cryogenian (850 635 Ma).

Because we observed this species in winter and in cold temperature in study area in active burrow systems.

This study also presents new information by making the discovery of numerous remnants of past tortoise burrows underground in the sampling grid surrounding the active burrow.

Lines are burrow densities from this study; symbols represent number of active burrows reported from X-radiography of mesocosm slabs.[32] Error bars represent ±1 standard deviation in burrow density.

Soil samples (n = 90) including those from heteromyids' active burrows, latrines and other mammals' dens were collected using an oriented sampling method from areas of Baja California, Mexico previously predicted as putative endemic "hotspots".

Eagles have been confirmed to attack nocturnally active, burrow-nesting seabird species such as storm petrels and shearwaters by digging out their burrows and feeding on all animals they find inside.

Burrowing species such as gophers and rabbits can be monitored through the presence of active burrows.

Body lice use more active escape mechanisms by burrowing in the downy portions of the body feathers or dropping from feather to feather [ 18].

Our images verified that the active tortoise burrow had a spiraling shape, but also showed splits in the larger burrow apparently dug by tortoises.

Fresh yak dung and active pika burrows explained only 10% and 3% of the variation in grazing intensity, respectively.