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Session E9: Function Control Of Fish Migration Facilities At The Hydro Power Plant Kostheim At River Main, Dr. Jörg Schneider

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

Applying various conventional and modern monitoring methods a function control of downstream migration facilities and turbine passage related mortality was conducted at the Kostheim Hydro Plant (4,9 MW; two Kaplan turbines; Δh max. 3,74 m, at MQ 2,36 m) at the river Main (km 3,2). Furthermore, the perceptibility and passability of a nature-like bypass for upstream migration was examined. Results showed a size selectivity of the bypass caused by an unsuitable entrance position 40 m downstream of the outlet of the turbines. The effectiveness of the downstream migration facilities proved to be low, leading to high mortalities at the …

Session A7: Use Of Telemetry For Fish Ecological Survey In Europe, Beate Adam

International Conference on Engineering and Ecohydrology for Fish Passage

Abstract:

In contrast to the US, Canada, and Scandinavian Countries there are few and infrequent ecological studies on fish conducted in Europe which use telemetry systems such as hydro-acoustic, radio, or PIT technology. The reason for the infrequent use of these technologies is mostly the high cost of the equipment and lack of experienced staff to operate it. Within the framework of this introductory talk there will be an exemplary selection of recently conducted telemetry studies in Europe that demonstrate the application possibilities of these technologies and resultant findings. Due to the amended European Animal Welfare Act (2014) there exist …

An Assessment Of Environmental Dna As A Tool To Detect Fish Species In Headwater Streams, Stephen F. Jane

Masters Theses 1911 - February 2014

Recent years have seen an explosion of interest in the use of freely available DNA present in aquatic systems, otherwise known as environmental DNA (eDNA), as a tool for monitoring aquatic organisms. However, much remains unknown about the behavior of eDNA over a range of environmental conditions. This is particularly true in high gradient headwater streams, which have received less attention than other types of water bodies. In the summer of 2011, a headwater stream system with well established species distributions was sampled using eDNA techniques. Though species were detected where known to be present, detections also occurred where traditional …

Growth Of Atlantic Salmon (Salmo Salar) In Freshwater, Douglas Bradlee Sigourney

Open Access Dissertations

Growth plays a key role in regulating ecological and population dynamics. Life history characteristics such as age at maturity, fecundity and age and size at migration are tightly linked to growth rate. In addition, size can often determine survival and individual breeding success. To fully understand the process of growth it is important to understand the mechanisms that drive growth rates. In Atlantic salmon, growth is critical in determining life history pathways. Models to estimate growth could be useful in the broader context of predicting population dynamics. In this dissertation I investigate the growth process in juvenile Atlantic salmon (Salmo …