Competition between larvae of two anuran species (Bufo bufo and B. calamita) was investigated under field conditions likely to disfavour cell-mediated interference mechanisms. The experiment used ...

Trail Ridge Pond is a permanent body of water about 30 x 70 m and 1 m deep at an elevation of 11,500 feet in northern Colorado. The plankton and bottom fauna were sampled quantitatively during the ...

The mussels, in larvae form, hitched a ride to this country inside the gills of Asian carp that were imported and quickly began reproducing. This Nov. 21, 2019 photo shows a dead Chinese pond mussel ...