Sökning: "habitat amount hypothesis"

Visar resultat 1 - 5 av 7 uppsatser innehållade orden habitat amount hypothesis.

1. 1. Can spawning site temperature regimes cause spawning time divergence in sympatric whitefish ecotypes? : Comparison of two hypotheses

   Master-uppsats, Umeå universitet/Institutionen för ekologi, miljö och geovetenskap

   Författare :Joni Riihimaa; [2023]
   Nyckelord :Coregonus lavaretus; Hatching time; Spawning habitat; Spawning time; Temperature dependence;

   Sammanfattning : The spawning time differs between sympatric ecotypes of lake-dwelling whitefish (Coregonus lavaretus) and this temporal divergence can be linked to the type of spawning habitat used (i.e., streams, littoral or profundal). LÄS MER

3. 2. The importance of Ecoparks for saproxylic beetles : a study on general ecological hypotheses in differently managed landscapes

   Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

   Författare :Albin Larsson Ekström; [2020]
   Nyckelord :deadwood; saproxylic beetles; habitat amount hypothesis; habitat heterogeneity hypothesis; landscape ecology; landscape intermediate complexity hypothesis;

   Sammanfattning : Current forestry practices have led to a decline of deadwood availability in Swedish forests. Even though deadwood has increased somewhat in Swedish forests in later years, it is still far from estimated deadwood threshold levels and of those found in natural systems. This has in turn led to a decline in species associated with deadwood e.g. LÄS MER

4. 3. Building-Integrated Photovoltaics for a Habitat on Mars : A Design Proposal Based on the Optimal Location and Placement of Integrated Solar Cells

   Uppsats för yrkesexamina på avancerad nivå, Luleå tekniska universitet/Institutionen för samhällsbyggnad och naturresurser

   Författare :Anna Schylander; [2019]
   Nyckelord :Building-integrated solar cells; Solar energy; Mars;

   Sammanfattning : The ever-increasing challenges that we face with our consumption of resources on Earth are factors which have prompted researchers to show interest in studying the possibilities of human habitat on other celestial bodies. Mars is a stone planet and is at such distance from the sun that it could be feasible for future settlements with the right technology and solutions. LÄS MER

5. 4. Mätning av hästars ättider av grovfoder i en aktiv grupphästhållning

   Kandidat-uppsats, SLU/Dept. of Anatomy, Physiology and Biochemistry

   Författare :Sabina Erikstedt; Malin Ronell; [2016]
   Nyckelord :hösilage; automatisk utfodring; aktiv grupphästhållning; ättider; grovfoder; lösdrift;

   Sammanfattning : Measurements in horses of feeding times of haylage in an active open barn system In an active open barn, such as Active Stable®, the ratio of roughage to each horse is controlled by a transponder that regulates the horses time for feeding in certain amount of minutes each day. Recommended feeding-times for these kinds of housing systems are generalized which entails that the horse’s ratio will not be individualized. LÄS MER

7. 5. Winter feeding site choice of ungulates in relation to food quality

   Master-uppsats, SLU/Dept. of Wildlife, Fish and Environmental Studies

   Författare :Philipp Otto; [2013]
   Nyckelord :supplementary feeding; Salix; silage; moose; roe deer; fallow deer; red deer; wild boar; competition; Öster Malma;

   Sammanfattning : Supplementary feeding is a widespread practice in Sweden. In most cases, this is done in order to increase ungulate densities for hunting purposes. Forest regimes can also provide a high amount of natural food which influences densities. But high densities are not unproblematic and can cause several problems, e. LÄS MER