<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Papadaki, Ch.</style></author><author><style face="normal" font="default" size="100%">Metzafou, Ag.</style></author><author><style face="normal" font="default" size="100%">Ntoanidis, L.</style></author><author><style face="normal" font="default" size="100%">Zogaris, S.</style></author><author><style face="normal" font="default" size="100%">Evelpidou, N.</style></author><author><style face="normal" font="default" size="100%">Argyropoulos, D.</style></author><author><style face="normal" font="default" size="100%">Dimitriou, E.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Habitat hydraulic modeling for assessing changes of mesohabitat types of a Greek mountainous river.</style></title><secondary-title><style face="normal" font="default" size="100%">EGU</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2014</style></year><pub-dates><date><style  face="normal" font="default" size="100%">March</style></date></pub-dates></dates><pub-location><style face="normal" font="default" size="100%">Austria</style></pub-location><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;div&gt;The aim of this study is to describe and assess changes in physical attributes of mesohabitat types in response&amp;nbsp;to different flows in a Greek mountainous river. Hydraulic simulations were applied using two one-dimensional&amp;nbsp;hydraulic models, MIKE 11 and HEC-RAS. The differences between the two models were analyzed by comparing&amp;nbsp;their outputs against in situ measurements. A 200 m reach in Acheloos river was chosen as study site (Mesochora&lt;/div&gt;
&lt;div&gt;upstream) mainly because it is located in relatively undisturbed conditions (near reference conditions according to&amp;nbsp;the Water Framework Directive) but also because there is intense interest for the construction of small hydroelectric&amp;nbsp;plants in this area and in other mountainous rivers. For the calibration process cross-sectional transects were&amp;nbsp;established perpendicular to the river flow. Transects were typically placed in areas representative of the various&amp;nbsp;habitat types, proportionally determined by a habitat mapping process at a larger stream segment. Each transect&amp;nbsp;was permanently marked with metal rods to allow repeated measurements in time. A 2D topographic survey was&amp;nbsp;conducted and field data (water level and velocity) were collected at the transects. Also, a gauging station was&amp;nbsp;installed downstream of the reach in order to provide water level data in an hourly step. Hydraulic models were&amp;nbsp;applied and calibrated over a range of flows and river stages using past measurements. For selecting the control&amp;nbsp;transects a thorough analysis of various parameters, such as habitat representativity, streambed slope and substrate&lt;/div&gt;
&lt;div&gt;types, was applied. In this way the habitat changes were described based on various flow scenarios over time. In&amp;nbsp;a later step the results from the hydraulic models will be combined with fish habitat simulation curves (HSCs)&amp;nbsp;focusing on the integration of mesohabitat and microhabitat types in the environmental flow assessment scheme.&lt;/div&gt;</style></abstract></record></records></xml>