Population genetic indices of veined Rapa whelk groups of the Black Sea remote regions

Abstract

The High Arctic Region’s freshwater ecosystems serve as hot spots to study the impact of extreme warming conditions on the biota. The cladoceran remains have been recovered from the surface sediments of a non-marine water body near Ny-Alesund, Svalbard, Norway. The cladoceran (crustaceans) belongs to the Chydorus sphaericus group Frey, 1980 and Daphnia pulex Leydig, 1860. The ecology of the species suggests that they lived in a well-developed ecosystem with Water Quality Class 3. This study has implications for understanding the response of the present-day biota experiencing the changing climate conditions and using these remains for assessing palaeoenvironmental conditions.

Freshwater as a Sustainable Resource and Generator of Secondary Resources in the 21st Century: Stressors, Threats, Risks, Management and Protection Strategies, and Conservation Approaches

“…Climate modification-related issues are some of the most intriguing problems to be addressed in our time. In the present climate change context, temperature increases are everywhere [ 84 ], even in surprising areas of the planet [ 85 , 86 , 87 , 88 ], and drought is a main driver for freshwater ecosystems’ ecological state [ 89 ], aquatic biodiversity [ 90 ], and their economic uses [ 91 , 92 ], even in what are considered ‘secure’ zones.…”