Essays about: "conservation of trees"

Showing result 1 - 5 of 30 essays containing the words conservation of trees.

  1. 1. Elater ferrugineus and Osmoderma eremita, a regional survey and habitat requirements on different landscape scales

    University essay from SLU/Horticulture

    Author : Benjamin Forsmark; [2012]
    Keywords : Landscape Ecology; Saproxylic; Conservation; Coleoptera; Hollow Tree; Habitat; Fragmentation;

    Abstract : Habitat destruction and fragmentation is the primary cause behind loss of biodiversity. Population dynamics are affected by factors that act on different spatial scales. To direct nature management efforts, the impact of different factors and at which spatial scale they act needs to be taken into consideration. READ MORE

  3. 2. Metod för kartläggning av lövråvara i Södra Skogs verksamhetsområde

    University essay from SLU/Dept. of Forest Resource Management

    Author : Elin Jonsson; [2012]
    Keywords : kNN-Sweden; National Forest Inventory; remote sensing; deciduous raw material; standing volume;

    Abstract : Södra Skog chose in 2011 to convert the saw mill in Traryd to a gradually refined sawmill of hardwood. In 2009, they had also acquired the hardwood sawmill in Djursdala. This was strategically important for Södra's business since the demand for hardwood products has increased. READ MORE

  4. 3. Comparison of saproxylic beetle assemblages on four different broad-leaved tree species in south-eastern Sweden

    University essay from Linköpings universitet/Institutionen för fysik, kemi och biologi

    Author : Helena Johansson; [2011]
    Keywords : Conservation; coleoptera; beetles; saproxylic; broad-leaved trees; hollow; preferences;

    Abstract : Old hollow trees have declined in Europe and many saproxylic (wood-dwelling) beetles dependent on them are threatened. Several studies have been done on old hollow oaks and they have been shown to harbour a species-rich saproxylic beetle fauna. However, other broad-leaved trees might also be important to consider as supporting habitats. READ MORE

  5. 4. Restoration of a Rich Fen by Top Soil Removal : Temporal and Spatial Responses among Vascular Plants, Bryophytes and Land Snails during 15 years

    University essay from Uppsala universitet/Institutionen för biologisk grundutbildning

    Author : Liselott Evasdotter; [2011]
    Keywords : rich fen; restoration; top soil removal; succession; land snails;

    Abstract : Rich fens are calcareous and nutrient poor wetlands with a rich flora of orchids, sedges and mosses. As many as one hundred plant species are rich fen specialists. Many wetlands have been drained historically, and transformed to agricultural land or production forests. Today rich fens cover only 2-3% of the total mire area in Sweden. READ MORE

  6. 5. Högskärmar och kalhyggesfritt skogsbruk på bördig mark i Medelpad

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Elsa Järvholm; [2011]
    Keywords : högskärm; gran; föryngring; skador; kontinuitetsskogsbruk;

    Abstract : Under senare år har intresset för ett alternativ till kalhyggesbruk vuxit sig starkare i både Sverige och andra länder i Europa. I Sverige ses skärmskogsbruk och blädning i granskogar som två högst intressanta alternativ till kalhyggesbruk. READ MORE