Essays about: "density-dependent effect"

Found 5 essays containing the words density-dependent effect.

1. 1. WIND POWER MANAGEMENT:RISK ANALYSIS FOR WIND POWER PROJECTS IN NORTH SWEDISH WHITE-TAILED SEA EAGLE HABITATS

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Björn Larsson; [2022]
   Keywords : Carrying capacity; density-dependent effect; displacement effect; land use;

   Abstract : By investigating the scope of future wind turbine projects in north Swedish coastal regions and Lapland inland, identification of especially sensitive areas and the effect of wind farm location for the white- tailed sea eagles (WSE) Haliaeetus albicilla at these sites were evaluated. Since the 1980s the WSE the population growth has been stable and intensified in the last two decades, the upgoing trend is evident especially at coastal areas of the Bothnian Sea and Lapland inland, these regions are also considered suitable for wind farm projects. READ MORE

3. 2. Host plant selection in closely related butterfly species due to reproductive interference: Modelling a tritrophic system

   University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

   Author : Alexandros Bantounas; [2021]
   Keywords : reproductive interference; habitat selection; modelling; phytophagous insects;

   Abstract : Host plant selection is an important process during the life cycle of lepidopterans, providing ovipositing sites for adults and food resources for the larvae. The processes behind host plant selection have been extensively studied, especially in closely related species in the context of niche separation. READ MORE

4. 3. Effekter av obrukade åkerkantzoner på antal häckande gulsparvar (Emberiza citrinella)

   University essay from SLU/Dept. of Ecology

   Author : Linnea Aronsson; [2012]
   Keywords : gulsparv; habitatdiversitet; åkerholmar; blockgränser;

   Abstract : Gulsparven Emberiza citrinella är en vanlig jordbruksfågel i Sverige. Beståndet har dock under senare tid kraftig minskat och mer än halverats sedan 1975-talet. Populationsned-gången antas beror på ett allt effektivare jordbruk, med en minskning av småbiotoper i slättbygderna, men även ökad användning av bekämpningsmedel. READ MORE

5. 4. Models of individual tree mortality for trembling aspen, lodgepole pine, hybrid spruce and subalpine fir in northwestern British Columbia

   University essay from SLU/Dept. of Forest Ecology and Management

   Author : Sören Möller Pedersen; [2007]
   Keywords : tree mortality; density dependent mortality; statistical models; SORTIE-ND; British Columbia; sub-boreal spruce zone;

   Abstract : Density dependent mortality is an important process in forest succession. The overall predictive abilities of forest simulation models are closely related to their ability to predict mortality. Finding appropriate methods for modelling mortality have often proved to be a difficult challenge. READ MORE

6. 5. Effects of refuge availability on growth and survival of YOY Arctic char (Salvelinus alpinus)

   University essay from SLU/Dept. Of Aquatic Resources

   Author : Per Nilsson; [2006]
   Keywords : Arctic char; growth; predation; refuge; yoy; cannibalism; survival; shelter;

   Abstract : Risk of predation induces behavioural responses in prey, such as decreased activity and avoidance of risky habitats. Sheltering by prey in low risk habitat not only constrains the physical area but also the accessibility of resources. Hence, variation in refuge availability affects the performance of refuging individuals. READ MORE