Sökning: "i biologi"

Visar resultat 1 - 5 av 1390 uppsatser innehållade orden i biologi.

1. 1. Oligolectic bee species. An understudied group in Global Change impacts?

   Kandidat-uppsats, Göteborgs universitet / Instiutionen för biologi och miljövetenskap

   Författare :Monika Böttcher; [2024-03-19]
   Nyckelord :Solitary bee; global change; oligolecty; red list; taxonomy;

   Sammanfattning : Global change is considered the primary cause of the decline in bees worldwide, posing a significant threat to crucial pollination services they provide, carrying negative economic and ecological implications. Despite the extensive research conducted on the responses of bee communities to anthropogenic impacts, the focus has predominantly been on commercially interesting bees. LÄS MER

3. 2. DIFFERENCES ON THE IMPACTS AND ORIGINS OF POLLEN IN FOUR MAJOR SWEDISH CITIES BETWEEN 2014 AND 2019

   Master-uppsats, Göteborgs universitet / Institutionen för biologi och miljövetenskap

   Författare :Jean-Patrick Ridet-Lagorce; [2024-02-12]
   Nyckelord :Pollen; Allergy; Antihistaminic; Airborne transport; Geographical origins;

   Sammanfattning : Allergies are widespread in the world and coming from various sources, one of the causes being airborne allergens and especially, pollen. The negative impact of pollen is enhanced by pollution and climate change which are some of the biggest issue humankind is facing today. LÄS MER

4. 3. FÖRSÄLJNING AV OCH INSTÄLLNING TILL FRÄMMANDE VÄXTER I TRÄDGÅRDSBRANSCHEN

   Master-uppsats, Göteborgs universitet / Institutionen för biologi och miljövetenskap

   Författare :Marcus Dalebjörk; [2024-02-12]
   Nyckelord :Invasive alien species; alien plants; horticulture industry; ornamental plants; Sweden; garden owners;

   Sammanfattning : Alien plants that have intentionally been introduced to an area for cultivation in public or private gardens constitute the primary pathway of introduction for invasive alien species that spread into nature. Garden owners want species that have satisfying characteristics, these characteristics are often also linked to plant invasiveness. LÄS MER

5. 4. Utvärdering av biotopvårdande åtgärder i Grimåsbäcken. En analys av fysikaliska egenskaper och sammansättning av makroevertebrater.

   Kandidat-uppsats, Göteborgs universitet / Instiutionen för biologi och miljövetenskap

   Författare :Björn Andermo; [2024-01-22]
   Nyckelord :Channelized streams; retention; biotope preservation; macroinvertebrates; bottom substrate; woody debris.;

   Sammanfattning : Many streams have been exposed to extensive anthropogenic impact for the benefit of forestry and agriculture. The effects has mainly been channelization characterized by lowered and straightened channels. This homogeneous morphology leads to decreased ability to retain water as well as lost connection to the floodplain. LÄS MER

7. 5. Betesrestaureringens effekter på växtartrikedom och biologisk mångfald : -restaurering av betesmark på Hallands Väderö

   Kandidat-uppsats, Karlstads universitet/Avdelningen för biologi; Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

   Författare :Rolfsdotter Söderberg Ylva; [2024]
   Nyckelord :pasture restoration; biodiversity; species richness; effective number of species; plants; plant species; number of species; clearing; pasture; betesrestaurering; biologisk mångfald; artrikedom; effektivt artantal; växter; växtarter; antal arter; artantal; hävd; betesmark; naturbetesmark;

   Sammanfattning : Abstract Pasture is a very species-rich but threatened nature type, and compared to 200 years ago, only five percent of natural pastures remain in Sweden. One way to try to save the biological diversity that pastures harbor is to restore overgrown land by clearing and reintroducing grazing animals. LÄS MER