Limnoecological relationships between water level fluctuations and Ostracoda (Crustacea) species composition in Lake Sünnet (Bolu, Turkey)

摘要: The ecological characteristics of ostracods in Lake Sunnet were monitored monthly between May 2005 and September 2007; 9 living 5 subfossil ostracod taxa recorded. Among the species, Ilyocypris getica was reported Turkey for first time, while Stenocypria fischeri found second time country 55 years. most abundant Limnocythere inopinata, collected dry wet months, I. bradyi only species months. clustered into 3 groups based on their preference. Species composition occurrences closely related to lake water level fluctuation, from 7 13 m within a year. These fluctuations played significant role changes physicochemical lake, along with (P < 0.01). A strong negative correlation 0.05) precipitation both ambient temperature SO4 also interpreted as outcome such fluctuations. number corresponded salinity changes. Most appearing tolerant large fluctuation. results correspond idea 'pseudorichness,' when is dominated by cosmopolitans over noncosmopolitans, an indication low quality lake. Changes have been accelerated anthropogenic activities diversions chicken farms agricultural fields during climatic conditions. occurrence these appears produced seasonal differences lake's composition.