| 61. |
- Fröberg, Lars
(author)
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Inventering av vita fläckar i norra Lapplands skogsland
- 2014
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In: Svensk Botanisk Tidskrift. - 0039-646X. ; 108:5, s. 270-276
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Journal article (peer-reviewed)abstract
- An inventory of vascular plants in the poorly known forested lowland parts of the provinces of Lule and Torne lappmark has been started. The purpose of the project is to gather distributional data for a forthcoming Swedish atlas of vascular plants. Field work has so far been carried out in the southeastern part of Lule lappmark, from which preliminary results are given.
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| 62. |
- Fröberg, Lars
(author)
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Komplettering av kärlväxtfloran i Blekinge
- 2012
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In: Svensk Botanisk Tidskrift. - 0039-646X. ; 106:2, s. 67-99
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Journal article (peer-reviewed)abstract
- Hela 122 nya arter för Blekinge – varav åtta även nya för Sverige – har hittats sedan Blekinges flora kom ut 2006. Lars Fröberg presenterar här den digra fyndlistan.
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| 63. |
- Fröberg, Lars
(author)
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Läsvärt: Altas Flora Danica
- 2016
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In: Svensk Botanisk Tidskrift. - 0039-646X. ; 110, s. 47-49
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Journal article (other academic/artistic)
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| 64. |
- Fröberg, Lars, et al.
(author)
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Till minne: Bengt Nilsson (1939-2016)
- 2016
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In: Svensk Botanisk Tidskrift. - 0039-646X. ; , s. 405-405
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Journal article (peer-reviewed)abstract
- Den kände Sölvesborsbotanisten Bengt Nilsson har oväntat lämnat oss.
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| 65. |
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| 66. |
- Götmark, Elin, 1979, et al.
(author)
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Varför finns buskar? Biologi och matematik i skön förening
- 2017
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In: Svensk Botanisk Tidskrift. - 0039-646X. ; 111:2, s. 106-116
-
Journal article (peer-reviewed)abstract
- We describe advantages for a shrub compared to a small tree with the same above-ground woody volume, based on larger cross-sectional stem area (Fig. 2b), larger area of photosynthetic tissue in bark and stem, larger vascular cambium area, larger epidermis (bark) area (Fig. 2c) and larger area for sprouting, and faster production of twigs and canopy. We predicted higher growth rate for a small shrub than a small tree, which was supported by empirical studies. Also, a shrub will produce seeds faster than a tree, multiple stems in shrubs insure future survival and growth if one or more stems die, and several structural traits improve survival, compared to tall tree stems. Multi-stemmed trees may be distinguished from shrubs by more upright stems, reducing bending moment (Fig. 6). More information in Götmark et al. 2016: Front. Plant Sci. 7: 1095.
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| 67. |
- Götmark, Elin, 1979, et al.
(author)
-
Why be a shrub?
- 2017
-
In: Svensk Botanisk Tidskrift. - 0039-646X. ; 111:2, s. 106-116
-
Journal article (peer-reviewed)abstract
- We describe advantages for a shrub compared to a small tree with the same above-ground woody volume, based on larger cross-sectional stem area (Fig. 2b), larger area of photosynthetic tissue in bark and stem, larger vascular cambium area, larger epidermis (bark) area (Fig. 2c) and larger area for sprouting, and faster production of twigs and canopy. We predicted higher growth rate for a small shrub than a small tree, which was supported by empirical studies. Also, a shrub will produce seeds faster than a tree, multiple stems in shrubs insure future survival and growth if one or more stems die, and several structural traits improve survival, compared to tall tree stems. Multi-stemmed trees may be distinguished from shrubs by more upright stems, reducing bending moment (Fig. 6).
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| 68. |
- Götmark, Frank, 1955
(author)
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Skötsel av skogar med höga naturvärden – en kunskapsöversikt. Fri utveckling, traditionell hävd och naturvårdsgallring – tre skötselalternativ för sydsvenska skogar : Management alternatives for temperate forests with high conservation values in south Sweden
- 2010
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In: Svensk Botanisk Tidskrift. - 0039-646X. ; 104:Supplement 1, s. S1-S88
-
Research review (peer-reviewed)abstract
- Skötsel av skogar med höga naturvärden – en kunskapsöversikt. [Management alternatives for temperate forests with high conservation values in south Sweden.] The management of reserves and other forests with high biodiversity values is debated. Focusing on south Sweden (Fig. 1), I review non- or minimal intervention (”free” succession), traditional management (e.g. grazing, pollarding) and careful partial cutting (conservation thinning, stands with >75% canopy closure). The alternatives are based on 1) ecology and 2) cultural/aesthetical nature conservation, that may be mixed and form value judgements. For about 20 years, ecologists have emphasized the importance of natural disturbances for management (e.g. fire, windstorms, extreme temperatures). In Sweden, the role of succession tends to be overlooked, especially the long-term perspective required to produce old-growth, old trees of long-lived species (>500 years), and high dead wood volumes. In the European lowland, there are extremely few woods that have not been cut for 300 years or more. I suggest minimal intervention should be used for at least 50% of the area of forests with high biodiversity values. Traditional use, including fire that has a strong cultural component, complements minimal intervention in creating habitat diversity, if grazing effects are controlled. Deciduous broadleaved trees, valuable for conservation in our conifer-dominated production forests, have increased (Swedish National Forest Inventory, NFI; Fig. 5). Secondary succession in semi-natural stands have led to denser forests, and conservation thinning (CI) is tested in 25 such stands (references in Table 4). Overall, compared to control areas, CI has positive short-term effects on biodiversity of seven organism groups. I used NFI data from 2003–2007 to analyse broadleaf-rich forest types of three height classes. Tall forests dominated. Closed canopy stands (all height classes) formed about 500 000 ha. Part of this area may be subjected to conservation thinning (and minimal intervention/traditional use). Only 1.4–6% of the broadleaf-rich forest types were protected as nature reserves or national parks 2003–2007. In addition, green forestry plans are used by private and other forest owners to set aside or manage identified conservation stands. The forest company Sveaskog establishes Ecoparks, with various forms of management, and also minimal intervention. No coordinated planning for management of the conservation forests exists in Sweden. We lack data on the actions of forest owners, and need to study the effects of the different forms of management on biodiversity and on cultural/aesthetical aspects.
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| 69. |
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| 70. |
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