Essays about: "species occurrence"

Showing result 1 - 5 of 234 essays containing the words species occurrence.

  1. 1. Tiaminbrist på idisslare : hur vanligt är det med symtom i Sverige?

    University essay from SLU/Dept. of Animal Environment and Health

    Author : Johan Turnstedt; [2024]
    Keywords : CCN; cerebrocortikal nekros; PEM; polioencefalomalaci; enkätstudie;

    Abstract : Tiamin är ett vattenlösligt vitamin essentiellt för många djur, inklusive människor. Idisslare producerar normalt tillräckligt med tiamin via mikrober i våmmen, men brist kan ändå uppstå vid särskilda förhållanden. READ MORE

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

    University essay from Göteborgs universitet / Institutionen för biologi och miljövetenskap

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

    Abstract : 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. READ MORE

  4. 3. How does grazing and burning affect the occurrence and development of vascular plants?

    University essay from Göteborgs universitet / Institutionen för biologi och miljövetenskap

    Author : Felicia Ivarsson; [2023-02-17]
    Keywords : Keywords: burning; grazing; plot; restoration; plant; flower;

    Abstract : Grazing and burning are disturbances that can be used for management of landscapes that are in need of restoration. When applying these disturbances, you can create a more diverse flora and fauna and control the grazing pressure from domestic cattle. READ MORE

  5. 4. Anti-Müllerskt hormon hos hanhund. Samband mellan avvikande testikelmorfologi, hormonets distribution i testikelvävnaden och koncentration i serum

    University essay from SLU/Dept. of Clinical Sciences

    Author : August Rooth; [2023]
    Keywords : Anti-Müllerskt hormon; AMH; Sertolicell; kryptorkism; immunohistokemi; testikelmorfologi; hanlig fertilitet hos hund;

    Abstract : Anti-Müllerskt hormon (AMH) är en av de första markörerna för hanlig könsutveckling i fosterstadiet hos däggdjur och fortsätter sedan att spela en stor roll för den hanliga fertiliteten. Hormonet produceras av testikelvävnadens Sertoliceller och bygger upp tubulära nätverk kallade seminiferösa tubuli, vari spermatogenesen äger rum. READ MORE

  6. 5. An evaluation of the Janzen-Connell hypothesis for a dry tropical forest in Guinea-Bissau

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Petya Petrowa Kirjazow; [2023]
    Keywords : Earth and Environmental Sciences;

    Abstract : The Janzen–Connell hypothesis states that seedling survival increases with distance from the parent tree, which promotes regular spacing of species within a forest and thus biodiversity. Very few studies have tested this hypothesis in tropical Africa. READ MORE