资讯

Limnology and Oceanography, Vol. 60, No. 6 (2015), pp. 2158-2172 (15 pages) Zooplankton inhabiting deep, oligotrophic, tropical lakes must cope with scenarios where the combination of resource ...
As per the Trophic State Index, an oligotrophic or hipotrophic lake is characterized by cold ... of nutrients and various types of warm-water fish, as well as algae and submerged aquatic plants.
and fish eggs. Also known as the rock sturgeon, the lake sturgeon is one of 27 species of sturgeon, a family of bony fish that found around the world that first appears in the fossil record more ...
such as the decline of fish species. Various efforts to combat these issues, including dredging, artificial aeration, and improved sewage treatment, are presented, emphasizing the need for long ...