Essays about: "phenology models"

Showing result 1 - 5 of 8 essays containing the words phenology models.

  1. 1. Plant phenology and climate change : possible effect on the onset of various wild plant species first flowering day in the UK

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Nigel Fox; [2019]
    Keywords : geography; GIS; plants; phenology; climate change; global warming; FFD; IPCC; Bluebell; Garlic mustard; Coltsfoot; Cuckooflower; United Kingdom; Woodland Trust; UK; Earth and Environmental Sciences;

    Abstract : The IPCC states that the planet is significantly warming due to effects of climate change. This warming effect has consequences for phenological events. Many species cannot track rapid climate change, resulting in phenological mismatches. This study looks at an extreme weather event and the longer-term effects of climate change. READ MORE

  3. 2. Impact of environmental variables on tundra vegetation onset of flowering explained by survival modelling

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Hanna Jonsson; [2019]
    Keywords : Flowering; Phenology; Cox proportional hazard model; Tundra; International tundra experiment; Climate change; Physical Geography and Ecosystem analysis; Earth and Environmental Sciences;

    Abstract : Timing of phenological events are highly related to climate and is one of the first signs of ecosystem responses to the climate change. Timing of flowering phenology is an important trait influencing the distribution and fitness of plants species. READ MORE

  4. 3. Comparing Ips typographus and Dendroctonus ponderosas responses to climate change with the use of phenology models

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Ida Pettersson; [2015]
    Keywords : forest damage.; phenology models; bark beetles; voltinsim; climate change; D. ponderosa; I. typographus; Earth and Environmental Sciences;

    Abstract : Bark beetles are a subfamily of insects living in and breeding on woody plants. Some of the bark beetle species have the ability to attack living trees, and thereby the potential to cause major forest damage. These forest damages can have a significant ecological and economic impact to forest ecosystems and foresters. READ MORE

  5. 4. Relationship between tree species composition and phenology extracted from satellite data in Swedish forests

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Stefan Arvidsson; [2015]
    Keywords : MODIS; forests mapping; fractional mapping; satellite derived phenology; GIS; Physical Geography and Ecosystem analysis; TIMESAT; NDVI; EVI; Earth and Environmental Sciences;

    Abstract : This study investigated the “relationship between tree species composition and phenology extracted from satellite data in Swedish forests”. The proposed method investigated in this study aims at mapping the fractional composition of deciduous/coniferous tree species and also the fractional composition of Norway spruce (Picea abies) and several pine (Pinus sp. READ MORE

  6. 5. Deoxynivalenol prediction in oats

    University essay from SLU/Dept. of Crop Production Ecology

    Author : Joel Markgren; [2013]
    Keywords : Deoxynivalenol; F.culmorum; F.graminearum; Leaf wetness; Fusarium head blight; Modeling; oat; phenology;

    Abstract : In recent years there have been problems with unacceptable high levels of the mycotoxin contam-inant Deoxynivalenol (DON) in oats in Sweden and Norway. This is due to infections of the fun-gal pathogens Fusamium graminearum and Fusarium culmorum. READ MORE