Essays about: "phenology"

Showing result 16 - 20 of 69 essays containing the word phenology.

  1. 16. Flight phenology of oligolectic solitary bees are affected by flowering phenology

    University essay from Linköpings universitet/Biologi

    Author : Anna Palm; [2021]
    Keywords : Flight phenology; Flowering phenology; Global warming; Oligolectic; Solitary bee;

    Abstract : Understanding the relationships between solitary bees’ flight phenology and flowering phenology is important in the context of global warming. Using Swedish citizen science data, observations of oligolectic solitary bees and flowering phenology were used together with temperature data. READ MORE

  3. 17. Legacy effects of spring temperature anomalies on seasonal productivities in northern ecosystems

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Hanna Marsh; [2021]
    Keywords : Physical geography; Ecosystem analysis; Northern ecosystems; Legacy effects; Climate Change; Gross Primary Production; Earth and Environmental Sciences;

    Abstract : Legacy effects of spring temperature anomalies on seasonal productivities in northern ecosystems Direct and lagged effects from spring temperature anomalies for the time-period 2001-2018 have been investigated for northern ecosystems (> 30°N). Three different data sets of Gross Primary Production (GPP) estimates (GOSIF, NIRvGPP and FLUX GPP) have been used in tandem with concurrent climate data to find significant correlations between spring growth and temperature anomalies and subsequent growing seasons. READ MORE

  4. 18. Can ambient temperature patterns predict fireweed phenology?

    University essay from SLU/Dept. of Wildlife, Fish and Environmental Studies

    Author : Jennifer Chaimungkhun Johansson; [2021]
    Keywords : fireweed; Chamaenerion angustifolium; growing degree-days; camera trap; phenology;

    Abstract : The Earth’s climate has been changing with greater intensity and frequency in recent years. These changes, especially the warmer climate, have advanced plant phenology, thus increasing the risk of interspecific temporal mismatches, for example pollinators and pollinated flower species. READ MORE

  5. 19. Assessing annual forest phenology: a comparison of Unmanned Aerial Vehicle (UAV) and phenocamera datasets

    University essay from Lunds universitet/Institutionen för naturgeografi och ekosystemvetenskap

    Author : Shangharsha Thapa; [2020]
    Keywords : Geography; Ecosystem Analysis; Near-surface Remote Sensing; UAV; Phenocamera; Forest Phenology; Phenophase; Seasonality; NDVI; GCC; Geomatics; Earth and Environmental Sciences;

    Abstract : Near-surface remote sensing platforms such as Unmanned Aerial Vehicles (UAVs) and phenocameras appear to be potential platforms for keeping track of seasonal dynamics at a local scale. This research focusses on extracting time series of different vegetation indices (VIs) from both platforms, computing seasonality events from them and comparing the results against spectral sensor data. READ MORE

  6. 20. Partners in crime – How cabbage seed weevil assists brassica pod midge in damaging pods of winter oilseed rape in fields in Southern Sweden : how is insect abundance related to crop damage?

    University essay from SLU/Dept. of Biosystems and Technology (from 130101)

    Author : Sarah Heithausen; [2020]
    Keywords : monitoring; Ceutorhynchus obstrictus; Dasineura brassica; Brassica napus; Integrated Pest Management; economic threshold; pan trap; sticky trap;

    Abstract : The brassica pod midge (Dasineura brassicae) has emerged as an important pest causing problems in Winter Oilseed Rape (WOSR) (Brassica napus ssp. napus) production in Southern Sweden during recent years. Adult female D. brassicae oviposit into WOSR pods. READ MORE