| Because of their sensitivity to variations in physical and environmental factors in different aquatic habitats, ostracod species have been used as biological and ecological indicators. Once these factors are known, reconstruction of the past, and estimation of the present and the future conditions can be made. However, this idea begins with accurate identification and a proper taxonomy of ostracod species. Without classification, the knowledge of ecology and distribution cannot be completed. Even though ostracods are important objects in biological, ecological and paleontological studies, less attention has been paid for them in Nevada, especially in the Great Basin area. However, the results from the present study, being the first and the most extensive study on the spring fresh water ostracods in Nevada, suggest that the area has unique and very high species diversity and richness. The study also shows possible relationships between biogeographical distribution of ostracods and historical events. Finding 1 new genus and 6 new species and varieties supports this idea that the spring ostracods of Nevada are of unique diversity and importance. The fundamental objectives of this study are (1) to complete a taxonomic survey of spring ostracods of Nevada, (2) to present both quantitative and qualitative description of their ecology, (3) to estimate their biogeographic distribution, and (4) to study the conservation status of natural spring habitats in Nevada. The results suggest to develop an urgent conservation plan and protection of natural spring habitats which may be called endangered habitats. |
