Browsing Enstitüler by Author "Demirel, Nazli"

Now showing items 1-9 of 9

    • A critique of the balanced harvesting approach to fishing 

      Tsikliras, Athanassios C.; Froese, Rainer; Walters, Carl; Pauly, Daniel; Winker, Henning; Demirel, Nazli; Weyl, Olaf L. F. (2016)
      The approach to fisheries termed "balanced harvesting" (BH) calls for fishing across the widest possible range of species, stocks, and sizes in an ecosystem, in proportion to their natural productivity, so that the relative ...

    • An overall indicator for the good environmental status of marine waters based on commercially exploited species 

      Demirel, Nazli; Sampang, Arlene (2015)
      An indicator is presented to assess and monitor the good environmental status of national marine waters based on the status of commercially exploited marine fishes and invertebrates, including fully-assessed as well as ...

    • Estimating fisheries reference points from catch and resilience 

      Demirel, Nazli; Kleisner, Kristin M.; Froese, Rainer; Coro, Gianpaolo (2017)
      This study presents a Monte Carlo method (CMSY) for estimating fisheries reference points from catch, resilience and qualitative stock status information on data-limited stocks. It also presents a Bayesian state-space ...

    • Ichthyoplankton dynamics in a highly urbanized estuary 

      Demirel, Nazli (2015)
      Spatio-temporal distribution and composition of ichthyoplankton assemblages were studied in the Golden Horn estuary (Istanbul) over a 10-month period. Environmental parameters were considered to determine the environmental ...

    • Influence of the extreme conditions on the water quality and material exchange flux in the Strait of Istanbul 

      Demirel, Nazli; Kiratli, Nur; Övez, Süleyman; Aslan, Asli; Sur, Halil Ibrahim; Tas, Seyfettin; Okus, Erdogan; Muftuoglu, Ahmet Edip; Altiok, Hüsne (2014)
      This study focuses on the influence of extreme hydrological events on the water quality of the Strait of Istanbul (Bosphorus), a stratified waterway, polluted by sewage outfalls and non-point sources. Monthly collected ...

    • On the pile-up effect and priors for L-inf and M/K: response to a comment by Hordyk et al. on "A new approach for estimating stock status from length frequency data" Reply 

      Coro, Gianpaolo; Scarcella, Giuseppe; Tsikliras, Athanassios C.; Dureuil, Manuel; Pauly, Daniel; Winker, Henning; Probst, Wolfgang Nikolaus; Demirel, Nazli; Dimarchopoulou, Donna (2019)
      <p>We thank Hordyk et al. (2019) for pointing out a typographical error in one of our equations, which has meanwhile been fixed in the online version of Froese et al. (2018) and addressed in a corrigendum for the printed ...

    • Reply to Andersen et al. (2016) "Assumptions behind size-based ecosystem models are realistic" 

      Weyl, Olaf L. F.; Demirel, Nazli; Holt, Sidney J.; Tsikliras, Athanassios C.; Winker, Henning; Pauly, Daniel; Walters, Carl (2016)
      In a recent publication (Froese et al., ICES Journal of Marine Science; 73: 1640-1650), we presented a critique of the balanced harvesting (BH) approach to fishing. A short section dealt with the size-spectrum models used ...

    • Revisiting safe biological limits in fisheries 

      Coro, Gianpaolo; Demirel, Nazli; Kleisner, Kristin (2016)
      The appropriateness of three official fisheries management reference points used in the north-east Atlantic was investigated: (i) the smallest stock size that is still within safe biological limits (SSBpa), (ii) the maximum ...

    • Status and rebuilding of European fisheries 

      Matz-Lueck, Nele; Tsikliras, Athanassios C.; Demirel, Nazli; Dimarchopoulou, Donna; Froese, Rainer; Winker, Henning; Coro, Gianpaolo; Scarcella, Giuseppe (2018)
      Since January 2014, the reformed Common Fisheries Policy (CFP) of the European Union is legally binding for all Member States. It prescribes the end of overfishing and the rebuilding of all stocks above levels that can ...