Essays about: "Autochthonous"

Showing result 1 - 5 of 19 essays containing the word Autochthonous.

1. 1. “It’s a visceral connection” : young farmers processes of engagement in animal farming with autochthonous breeds

   University essay from SLU/Dept. of Urban and Rural Development

   Author : Ana Daniela Ferreira Andrade; [2022]
   Keywords : young farmers; ecosystem services; autochthonous breeds; human-animal relations;

   Abstract : Agroecosystems are valued by the provision of utilitarian services that satisfy human needs and by their non-utilitarian ascribed ecological, sociocultural or intrinsic values. Nowadays, a delicate situation of decrease of population and the fragile generational renewal comprises the risk of loss of cultural landscapes in many European rural communities. READ MORE

3. 2. Effects of melatonin and Single Layer Centrifugation on cryosurvival of ram semen samples

   University essay from SLU/Dept. of Clinical Sciences

   Author : Lea Enenkelová; [2021]
   Keywords : sheep reproduction; Jezersko-Solčava sheep breed; colloid centrifugation; melatonin;

   Abstract : The composition of the ram sperm membrane renders it vulnerable to injury during cryopreservation. Production of reactive oxygen species, which are by-products of metabolism, increases during freezing and thawing, causing damage to sperm membranes and acrosomes as well as affecting mitochondrial activity. READ MORE

4. 3. Water quality and organic matter linkages in waters draining arable fields

   University essay from SLU/Dept. of Soil and Environment

   Author : Adam Eriksson; [2021]
   Keywords : Natural organic matter NOM ; particular organic matter POM ; dissolved organic matter DOM ; allochthonous; autochthonous; Florescence index FIX ; Freshness index BIX ; Humification index HIX ; SUVA 254; E2:E3; Spectral Slope; Observation fields; microbial matter; humic matter; unfiltered samples UF ; filtered samples F45 ;

   Abstract : This study investigated leaching of natural organic matter (NOM) in twelve Swedish arable fields with regards to the quality of dissolved organic matter (DOM) and particulate organic matter (POM), using Absorbance (UV-Vis) and fluorescence spectrometry (EEM). DOM is defined as organic matter (OM) 0.45 μm. READ MORE

5. 4. Odensjön - A new varved lake sediment record from southern Sweden

   University essay from Lunds universitet/Geologiska institutionen

   Author : Hanna Hertzman; [2021]
   Keywords : Varved lake sediment; late Holocene; organic sediments; diatoms; land-use history; southern Sweden; palaeolimnology; Earth and Environmental Sciences;

   Abstract : Annually laminated (varved) sediments provide opportunities to reconstruct climate change and human impact on the environment with high temporal resolution. Depending on the character of the varves, such sediments can provide insight into the delivery of both autochthonous and allochthonous material from the lake and its catch- ment and answer questions regarding both regional and local responses to climate- and land-use changes. READ MORE

6. 5. Hydrodynamic modelling of fate and transport of natural organic matter and per- and polyfluoroalkyl substances in Lake Ekoln

   University essay from Uppsala universitet/Institutionen för geovetenskaper

   Author : Frida Ekman; [2021]
   Keywords : Ekoln; Natural organic matter NOM ; Total organic matter TOC ; Colour; degradation; sedimentation; photooxidation; PFAS; MIKE 3 FM; Ekoln; naturligt organiskt material NOM ; totalt organiskt kol TOC ; färg; nedbrytning; sedimentation; foto-oxidation; PFAS; MIKE 3 FM;

   Abstract : Societies are facing great challenges with obtaining a good quality and quantity of drinking water in the context of climate change. Increases in natural organic matter (NOM) and per- and polyfluoroalkyl substances (PFAS) have been observed in lakes and drinking water the past years, which is of great concern for water treatment plants in Sweden. READ MORE