@article{LopezTarazonLopezLoberaetal.2016,
  author    = {L{\´o}pez-Taraz{\´o}n, Jos{\´e} Andr{\´e}s and Lopez, Pilar and Lobera, Gemma and Batalla Villanueva, Ramon J.},
  title     = {Suspended sediment, carbon and nitrogen transport in a regulated Pyrenean river},
  series = {The science of the total environment : an international journal for scientific research into the environment and its relationship with man},
  volume    = {540},
  journal   = {The science of the total environment : an international journal for scientific research into the environment and its relationship with man},
  publisher = {Elsevier},
  address   = {Amsterdam},
  issn      = {0048-9697},
  doi       = {10.1016/j.scitotenv.2015.06.132},
  pages     = {133 -- 143},
  year      = {2016},
  abstract  = {Regulation alters the characteristics of riversty transforming parts of them into lakes, affecting their hydrology and also the physical, chemical, and biological characteristics and dynamics. Reservoirs have proven to be very effective retaining particulate materials, thereby avoiding the downstream transport of suspended sediment and the chemical substances associated with it (e.g. Carbon, C or Nitrogen, N). The study of fluvial transport of C and N is of great interest since river load represents a major link to the global C and N cycles. Moreover, reservoirs are the most important sinks for organic carbon among inland waters and have a potential significance as nitrogen sinks. In this respect, this paper investigates the effects of a Pyrenean reservoir on the runoff, suspended sediment, C and N derived from the highly active Esera and Isabena rivets. Key findings indicate that the reservoir causes a considerable impact on the Esera-Isabena river fluxes, reducing them dramatically as almost all the inputs are retained within the reservoir. Despite the very dry study year (2011-2012), it can be calculated that almost 300,000 t of suspended sediment were deposited into the Barasona Reservoir, from which more than 16,000 were C (i.e. 2200 t as organic C) and 222 t were N. These values may not be seen as remarkable in a wider global context but, assuming that around 30 hm(3) of sediment are currently stored in the reservoir, figures would increase up to ca. 2.6 x 10(6) t of C (i.e. 360,000 t of organic C) and 35,000 t of N. Nevertheless, these values are indicative and should be treated with caution as there is incomplete understanding of all the processes which affect C and N. Further investigation to establish a more complete picture of C and N yields and budgets by monitoring the different processes involved is essential. (C) 2015 Elsevier B.V. All rights reserved.},
  language  = {en}
}
@article{LoberaAndresDomenechLopezTarazonetal.2017,
  author    = {Lobera, Gemma and Andres-Domenech, Ignacio and L{\´o}pez-Taraz{\´o}n, Jos{\´e} Andr{\´e}s and Millan-Romero, Pedro and Valles, Francisco and Vericat, Damia and Batalla Villanueva, Ramon J.},
  title     = {Bed disturbance below dams: observations from two Mediterranean rivers},
  series = {Land degradation \& development},
  volume    = {28},
  journal   = {Land degradation \& development},
  publisher = {Wiley},
  address   = {Hoboken},
  issn      = {1085-3278},
  doi       = {10.1002/ldr.2785},
  pages     = {2493 -- 2512},
  year      = {2017},
  abstract  = {River-bed disturbance and associated sedimentary processes such as particle mobility are central elements to assess river ecosystem functioning. Dams change river dynamics affecting the magnitude and frequency of biophysical elements that depend on them. This paper examines the effects of two dams different in size, management, and location, on the flow regime, flood competence, and bed disturbance in two contrasting Mediterranean rivers, the Esera and the Siurana. For this purpose, two reaches on each river were monitored upstream and downstream from reservoirs. Several monitoring and modeling techniques were used to characterize flow competence, particle entrainment, and the volumes of sediments eroded and deposited after floods. The flow regime of the Esera has been modified from nivo-pluvial regime, typical of humid mountainous environments, to that observed in dry semiarid regions, in which high magnitude but low frequency floods are the dominant processes. Conversely, the flow regime of the Siurana has changed from a typical Mediterranean stream to a regime observed in more temperate environments, with more permanent and stable flows. Both rivers show notably physical changes, with channels clearly less dynamic below the dams. The lack of competent flows together with the sediment deficit associated with the dams has led to less active fluvial environments (reduced particle mobility and bed scour dynamics), a fact that affects instream habitat structure (more uniform grain size distribution, less physical heterogeneity, more stable flows), overall contributing to the degradation of the stream corridor and the subsequent environmental deterioration of the whole fluvial landscape. Copyright (c) 2017 John Wiley \& Sons, Ltd.},
  language  = {en}
}