@article{article_526724, title={PRESENT STATUS OF STURGEON IN THE LOWER SAKARYA RIVER IN TURKEY}, journal={Aquatic Research}, volume={2}, pages={53–60}, year={2019}, DOI={10.3153/AR19007}, url={https://izlik.org/JA84EU22ST}, author={Memiş, Devrim and Tosun, Deniz Devrim and Yamaner, Güneş and Tunçelli, Gökhan and Gessner, Jörn}, keywords={Lower Sakarya River,Sturgeon,HEPP,Fish Passage,Fish Passage}, abstract={<p class="MsoNormalCxSpFirst" style="margin-top:6pt;margin-right:21.85pt;margin-bottom:3pt;margin-left:21.3pt;"> <span lang="en-gb" xml:lang="en-gb">The </span> <span lang="en-gb" style="font-size:10pt;" xml:lang="en-gb">Hydro development started in the 1960s
with building 3 major dams in the upstream section of the Sakarya River. During
the 1980s the development of the floodplain sections of the river had its
onset. Under these altered conditions  <i>Huso huso, Acipenser nudiventris </i>,
and  <i>Acipenser sturio </i> disappeared from the river until the
1980s but <i>Acipenser gueldenstaedtii, as well as Acipenser stellatus, </i> were
shown to still reproduce in the remaining section of the river by 2013. The
construction of three additional HEPPs begun in the river section below
Pamukova, blocking migration and cutting off major spawning sites. While fish
passage facilities were included in the construction of the HEPPs since the
1980s, their design and location, as well as the maintenance rendered them
completely dysfunctional. A survey was carried out in the remaining free
flowing section of the lower river in 2014 to determine fish commun </span> <span lang="en-gb" style="font-size:10pt;" xml:lang="en-gb">ity composition and
water quality at 4 stations below Adasu HEPP. While a few <i>A. gueldenstaedtii </i>juveniles were observed in Sakarya River mouth close to the Black Sea,
only one young-of-the- (YOY) ( <i>A. stellatus </i>; W:25g; TL:28cm) was
reported which was captured from the Lower Sakarya River. </span> </p> <p> </p>}, number={2}