Essays about: "dispersal mechanisms"

Found 5 essays containing the words dispersal mechanisms.

1. 1. Four years with Cotula coronopifolia  : Monitoring and climate suitability modelling

   University essay from Umeå universitet/Institutionen för fysiologisk botanik

   Author : Lina Tomasson; [2022]
   Keywords : climate suitability model; Cotula coronopifolia; dispersal mechanisms; expansion speed; invasive alien species;

   Abstract : Cotula coronopifolia is a short-lived plant that originates from South Africa and Namibia. It has been present in Europe since the 18th century. This study includes a monitoring inventory of two C. coronopifolia populations on Öland, Sweden, which has taken place continuously four consecutive years (2018-2021). READ MORE

3. 2. Cotula coronopifolia : invasive or just another alien species?

   University essay from SLU/Dept. of Ecology

   Author : Lina Tomasson; [2020]
   Keywords : Cotula coronopifolia; dispersal mechanism; invasive species;

   Abstract : It is known that alien species can become invasive in a new environment and in new geographic areas. The recent and rapid expansion of Cotula coronopifolia (cotula)on the island of Öland in Sweden has raised questions about its potential invasiveness. READ MORE

4. 3. Antibiotikaresistensgener: förekomst och spridning i akvatisk miljö

   University essay from SLU/Dept. of Biomedical Sciences and Veterinary Public Health

   Author : Emmy Johansson; [2015]
   Keywords : antibiotikaresistens; resistensutveckling; antibiotikaresistensgener; akvatisk miljö; antibiotic resistance; resistance development; antibiotic resistance genes; aquatic environment;

   Abstract : Antibiotikaresistens hos bakterier har de senaste årtionden ökat drastiskt och är idag en av de största medicinska utmaningarna samhället står inför. Resistensutvecklingen har ökat i takt med den oförsiktiga användning av antibiotika som präglat både sjukvård och djuruppfödning i många år. READ MORE

5. 4. Differentiation of dispersive traits under a fluctuating range distribution in Asellus aquaticus

   University essay from Linköpings universitet/Biologi; Linköpings universitet/Tekniska högskolan

   Author : Martin Brengdahl; [2014]
   Keywords : Asellus aquaticus; Dispersion; Dispersive traits; Habitats; Isopoda; Lake Tåkern; Spatial selection; Vegetation;

   Abstract : Knowledge about dispersion is of utmost importance for understanding populations’ reaction to changes in the environment. Expansion of a population range brings with it both spatial sorting and over time, spatial selection. This means that dispersion rates increases over time at the expanding edge. READ MORE

6. 5. Stabilizing factors in spatially structured food webs

   University essay from Teoretisk Biologi; Ekologi

   Author : Sara Gudmundson; [2009]
   Keywords : Dispersal; extinction risk; food web; metapopulation; noise; spatial distribution; stability; synchrony.;

   Abstract : Ecological models have problems showing the positive relationship between diversity and stability found in nature. Theory states that complex food webs have high extinction risks and low stability. However, persistent food webs found in nature are large and complex containing many interconnections between species. READ MORE