27 uppsatser · sida 2 av 2
… butterflies have shown decreasing populations during the last decades and many species are threatened. Many butterflies are dependent on managed semi-natural grasslands because of their richness in nectar sources and host plants for the butterfly larva. Swedish pastures are …
… Quality Objectives, a priority area. Deciduous forests are rich in species and the occurrence of dead wood is an important factor for biodiversity. In order to identify valuable deciduous forests for bio-diversity, conservation needs good analyses and planning tools. Habitat …
… May and June. There were no significant differences in total abundance and species richness between the lodgepole pine and Scots pine stands. A total number of 20 species were counted in Scots pine and 19 species in lodgepole pine. The spotted flycatcher (Muscicapa striata) had …
Fokus på betydelsen av konnektivitet på brandfält i boreal skog i Västerbottens län
… has been reintroduced under controlled forms to recreate burnt habitats. Many species that are dependent on, or benefits from, forest fires have increased since fire was reintroduced. The importance of connectivity is often addressed in ecological research. This is particularly …
analys av trädens upplevelsekvalitéer
… The comprehensive inventory that has been made shows that lime is the dominant species in Vetlanda with no less than 62 %. The age division is quite even with one peak at the turn of the century, one during the ?60s and another during the ?90s. The city has luckily a limited …
en v?rdering av artrikedomen och dess kulturhistoriska roll
The thesis "Jaummuov?rrie Flower Meadow: An Assessment of Species Diversity and Cultural History," provides a detailed botanical examination of Jaummuov?rrie flower meadow in the Ammarn’s area, focusing on its biodiversity and cultural significance. The study aims to evaluate …
… of varied age into homogenous forests of similar age and thus affect bird species depending on different structures or habitats which are lost during forestry. In this report, a study was made to investigate how the amount of decidious trees, dead wood and variation in tree …
Epifytiska lavar utgör en viktig del av floran i den boreala zonen. Några miljövariabler är kända för att styra artrikedomen och artsammansättningen av epifytiska lavar på beståndsnivå, såsom träddiversitet, beståndsålder, fuktighet och trädens barkstruktur. Skogsbränder utgör …
ett välbehövligt komplement?
… its usefulness in cultural landscapes by preserving certain structures and the species richness that comes with these landscapes. Could forests managed by CCF improve the social dimension of forests? Potentially CCF could be a tool to engineer forests for social activities. Some …
en fältstudie och utredning av behov i södra Sverige
… forest growth, but failures were not unusual, and harmful effects, e.g. on species richness, have been a common cause for draining. Ditch cleaning is necessary for maintaining the ditches in good condition. Ditches in sensitive environments, and ditches in stands where the …
… farming benefits biodiversity, as organic farms have on average 30% higher species richness than conventional farms, that conventional farming due to fertilizer use causes higher green house gas emissions than organic, and that the conventional farming causes higher nutrient …
Lägesrapport över den svenska jordbruksdebatten
… farming benefits biodiversity, as organic farms have on average 30% higher species richness than conventional farms, that conventional farming due to fertilizer use causes higher green house gas emissions than organic, and that the conventional farming causes higher nutrient …
