Essays about: "downstream migration"

Showing result 1 - 5 of 27 essays containing the words downstream migration.

1. 1. Ligand-stimulated cleavage of PDGFR-beta

   University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

   Author : Agni Karolina Tsiatsiou; [2023]
   Keywords : ;

   Abstract : Platelet-derived growth factor receptors (α and β) are included in the family of receptor tyrosine kinases (RTKs). The dimeric PDGF ligands bind to the PDGF receptors and this results in receptor dimerization, autophosphorylation, and thus activation. The autophosphorylated receptor dimer activates numerous signaling pathways. READ MORE

3. 2. The climate impact of fishways : A life cycle assessment of Blyberg’s and Spjutmo’s up- and downstream fishways

   University essay from Linköpings universitet/Industriell miljöteknik

   Author : Ellen Lundin; Lovisa Liljenberg; [2023]
   Keywords : LCA; life cycle analysis; life cycle assessment; fishways; fish; fish migration; climate impact; technical fishways; co2 equivalents; co2 eq; hydro power; HPP; Sweden; construction; concrete; reinforcement steel;

   Abstract : The Swedish national plan for reapproval of hydropower describes that hydropower plants (HPPs) are required to be reassessed to ensure that modern environmental conditions are set for the permits. Since dams and HPPs create barriers for migrating fish and consequently disfavor biological diversity, one consequence of the national plan is that fishways are being constructed. READ MORE

4. 3. Fish Friendly Turbines forDownstream Migration : Literature review and case studies

   University essay from KTH/Hållbar utveckling, miljövetenskap och teknik

   Author : Signe Rosenblad; [2023]
   Keywords : Downstream passage solutions; downstream migration of fish; small-scale hydropower; eel; trout; Nedströms passagelösningar; nedströms vandring av fisk; småskalig vattenkraft; ål; öring;

   Abstract : As the energy consumption is constantly increasing, the demand of renewable energy is increasing too. Thirtythree percent of the renewable energy production in Europe constitutes of hydropower. Hydropower is animportant energy source as it has stabilizing and storing functions, but it heavily affects biodiversity. READ MORE

5. 4. Evaluating an increased spill regime as a management tool to improve downstream passage of salmon smolt

   University essay from Karlstads universitet/Institutionen för miljö- och livsvetenskaper (from 2013)

   Author : Mattias Hansson; [2022]
   Keywords : hydraulic modeling; hydroacoustic telemetry; time to event analysis; hydraulisk modellering; överlevnadsanalys; hydroakustisk telemetri;

   Abstract : The anadromous Atlantic salmon (Salmo salar) is dependent on river connectivity to reach spawning and rearing habitats in rivers. Most rivers are today fragmented by artificial barriers such as hydroelectric powerplants (HEP) which impede this migratory movement. READ MORE

6. 5. Effect of ascertainment bias on calculations of sex-biased admixture in Southern Africa

   University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

   Author : Ragnheidur Diljá Ásmundsdóttir; [2021]
   Keywords : Evolutionary Biology; Population Genomics; Human Evolution;

   Abstract : Southern African populations harbour great genetic diversity enhanced by  population migration to the area in the last two millennia. Africa is perhaps the least studied continent in regards to population genetics and is often underrepresented in global studies. READ MORE