Sökning: "Extinction"

Visar resultat 1 - 5 av 334 uppsatser innehållade ordet Extinction.

1. 1. Measuring copper abundances in the Galactic Bulge

   Kandidat-uppsats, Lunds universitet/Astrofysik; Lunds universitet/Fysiska institutionen

   Författare :Nikolei Höglinger; [2024]
   Nyckelord :Copper; Galaxy: abundances; Galaxy: bulge; Chemical Evolution; Physics and Astronomy;

   Sammanfattning : Context: The chemical evolution of Cu in the Galactic bulge have been studied in a few studies using red giant branch stars, but the ages of individual red giant stars are difficult to determine. In addition, the bulge has been a challenging region of the Milky Way galaxy to obtain high-resolution spectra of stars, except when observing through certain few small fields into the bulge that are known to have low extinction. LÄS MER

3. 2. Hur kan dammar påverka den urbana biologiska mångfalden?

   Kandidat-uppsats, SLU/Dept. of Landscape Architecture, Planning and Management (from 130101)

   Författare :Saga Forsberg; [2024]
   Nyckelord :biologisk mångfald; biodiversitet; öppna vatten; dagvattenlösning; urban; ekosystem; ekosystemtjänster; grön-blå infrastruktur; arter; klimatförändringar;

   Sammanfattning : Denna litteraturstudie sammanställer forskningsresultat från andra studier. Det finns många faktorer som påverkar urban biologisk mångfald, som exempelvis vattenföroreningar, övergödning, urban heat island effekten, förekomsten av invasiva arter, angränsande landskapstyp, val av skötsel och utformning av dammen. LÄS MER

4. 3. Civil olydnad som motstånd: En kvalitativ studie av klimatrörelsen Extinction Rebellion

   Kandidat-uppsats, Göteborgs universitet/Institutionen för globala studier

   Författare :Julia Olsson; [2023-10-26]
   Nyckelord :civil disobedience; resistance; environmental ethics;

   Sammanfattning : This qualitative study will focus on the environmental organization Extinction Rebellion (XR) and its use of civil disobedience. This study is delimited to local groups in Sweden and seeks to deepen the knowledge of civil disobedience by examine the ethical principles underlying the organization’s actions. LÄS MER

5. 4. Estimating historic ranges of extinct scavenging birds from North America during the late Pleistocene using co-occurrence data from the fossil record

   Master-uppsats, Göteborgs universitet / Institutionen för biologi och miljövetenskap

   Författare :Melissa Miranda; [2023-06-30]
   Nyckelord :Scavenging birds; Vultures; Co-occurrence Data; Range Estimates; Spatial Autoregressive Models; Co-extinction;

   Sammanfattning : The aim of my study was to estimate and compare the historic range of nine scavenging birds from North America that went jointly extinct with their mammalian megafaunal prey in the Late Pleistocene. Although the severity and timing of their co-extinction are strongly correlated, there has been little analytical support in providing estimates for the possible geographic distribution of scavenging birds prior to the extinction event. LÄS MER

7. 5. A parasitic bivalve affects the interaction between a native and an invasive salmonid

   Master-uppsats, Göteborgs universitet / Institutionen för biologi och miljövetenskap

   Författare :Brander Isac; [2023-04-18]
   Nyckelord :Glochidia larvae; Infestation class; General dominance behavior; Dominant subordinate; Strikes;

   Sammanfattning : The glochidia larvae of the freshwater pear mussel parasitize on juvenile brown trout during their maturation into tiny mussels. The parasitation has several negative impacts on the trout, one of the less studied being behavioral effects. LÄS MER