Sökning: "density dependent mortality"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden density dependent mortality.

  1. 1. Establishing the paleodemography of S: t Nicolai High Medieval cemetery - An evaluation study of the Transition Analysis 3 method

    Master-uppsats, Lunds universitet/Historisk osteologi

    Författare :Sandra Fritz; [2021]
    Nyckelord :Paleodemography; Transition Analysis; Middle Ages; Helsingborg; Osteology; History and Archaeology;

    Sammanfattning : Paleodemography is the study of evaluating and reconstructing ancient populations based on the processes of fertility, mortality and migration. In addition, structural variables such as life expectancy, population distribution and population density are included in order to calculate the demography of a given population at a given time. LÄS MER

  3. 2. Effects of ash dieback and Dutch elm disease on forest structure in Dalby Söderskog 2012-2020

    Master-uppsats, SLU/Southern Swedish Forest Research Centre

    Författare :Janis Ruks; [2020]
    Nyckelord :Sweden; Ophiostoma spp.; Hymenoscyphus fraxineus; Phytophthora spp.; forest succession; forest structure;

    Sammanfattning : Dalby Söderskog is a national park situated in southern Sweden. The forest is dominated by European ash (Fraxinus excelsior L.), wych elm (Ulmus glabra Huds.), pedunculate oak (Quercus robur L. LÄS MER

  4. 3. Issues of geographic context variable calculation methods applied at different geographic levels in spatial historical demographic research : a case study over four parishes in Southern Sweden

    Master-uppsats, Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Författare :Karolina Despoina Pantazatou; [2016]
    Nyckelord :geographic context variables; spatial demography; historic demography; spatial longitudinal demographic research; geography; physical geography; distance calculation methods; geographic levels; GIS; Earth and Environmental Sciences; Technology and Engineering;

    Sammanfattning : Spatial analysis is dependent on the geo-referencing quality of the spatial data, as well as on the definition of the geographic context variables used. However, these facts are rarely taken into consideration in historical demographic research where the geographic factor is considered. LÄS MER

  5. 4. Life history trade-offs in Anadromous Burbot Lota lota (Linnaeus 1758) from Rickleån and Sävarån, Northern Sweden

    Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

    Författare :Mikael Sandberg; [2015]
    Nyckelord :life history trade-offs; anadromous burbots; Bothnian Bay; Rickleån; Sävarån; otoliths;

    Sammanfattning : Anadromous burbots Lota lota (Linnaeus 1758) from two similar rivers in the Gulf of Bothnia area, Sävarån and Rickleån, Northern Sweden, were compared. The aim was to test for and explain differences in ecology. Spawning burbots in Sävarån were smaller, younger, grew slower and were more densely populated. LÄS MER

  7. 5. Effect of planting density and abiotic conditions on yield of Betula pendula and Pinus sylvestris seedlings in monoculture and mixture

    Master-uppsats, SLU/Dept. of Forest Ecology and Management

    Författare :Jennifer McGuinness; [2014]
    Nyckelord :abiotic environment; Betula pendula; density gradient; Interaction effects; Pinus sylvestris; Planting density; planting composition; seedling yield;

    Sammanfattning : How the yield of mature stands changes in response to factors such as stand composition, planting density and abiotic conditions is a developing topic, and underpins models and generalizations used by forest managers today. However, these generalizations are both the subject of debate and are limited to mature stands, leaving a knowledge gap concerning both mixed species stands and younger stands. LÄS MER