Long-term changes in two boreal landscapes with different management histories

Löfman, Satu

doi:10.1080/02827580601179383

Cited by 7 publications

(5 citation statements)

References 51 publications

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“…A growing interest in private forests has recently been observed in the literature (e.g. Sampson and DeCoster 2000;Best 2002;Bieling 2004;Furstenau et al 2007;Löfman 2007). This group of forests is described as ''non-industrial private forest'' (NIPF) (e.g.…”

Section: Introductionmentioning

confidence: 98%

The effects of forest patch size and ownership structure on tree stand characteristics in a highly deforested landscape of central Poland

et al. 2009

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Forest structure is influenced by the origin, history and manner of forest management. All these aspects may affect the occurrence of many forest dwelling organisms. We investigated the simultaneous impact of forest patch size and ownership structure on selected forest characteristics in central Poland. We sampled stand composition, the DBH of particular tree species, basal area, species number and species diversity in all 32 forest patches found in a farmland-dominated area of 150 km 2 . Forest ownership status was linked to patch size: large patches were state-owned and small ones were private. Ownership status also affected the average DBH and basal area of all tree species pooled, with lower DBH and basal area found in private forests. The share of deciduous trees was negatively affected by forest size, while pine was positively affected, which could suggest that forest management and economic interests may be related to this factor. The share of non-native species was higher in state forests. Our results showed that forest patch size could be associated with its ownership status, which is commonly ignored in research on the relationship between forest size and species occurrence. Historical as well as sociological aspects related to private forests in Poland are also presented.

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Section: Introductionmentioning

confidence: 98%

The effects of forest patch size and ownership structure on tree stand characteristics in a highly deforested landscape of central Poland

et al. 2009

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“…This assumption of fixed edge effects may be problematic, especially if landscapes encompass a gradient from highly intact with low potential for edge interaction to highly fragmented with high potential for edge interaction (e.g. Lofman 2007). Only a handful of empirical studies have directly examined edge interactions (e.g.…”

Section: Introductionmentioning

confidence: 99%

When edges meet: interacting edge effects in an African savanna

Porensky¹

2011

Journal of Ecology

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Summary1. Ecological edges (zones separating ecosystems or land cover types) can function as active boundaries, unique habitats and dynamic transition zones. Abiotic factors, species and species interactions exhibit strong responses to edges, and these responses -edge effects -can profoundly impact ecosystem structure and function. 2. Edge effects may be altered by the presence or proximity of other nearby edges. This phenomenon -edge interaction -is poorly understood, though its importance is increasingly recognized. Edge interactions are likely in fragmented or patchy landscapes that contain many edges. In such landscapes, understanding how nearby edges interact may be critical for effective conservation and management. 3. I examined edge interactions in an East African savanna. In this landscape, abandoned cattle corrals develop into treeless, nutrient-rich 'glades' that persist as preferentially grazed areas for decades to centuries. Glades represent important sources of structural and functional landscape heterogeneity and have major impacts on distributional patterns of plant and animals. 4. I used existing variation in inter-glade distance to investigate the importance and strength of glade edge interactions for plants, Acacia ants and large herbivores. Specifically, I compared response patterns obtained from transects that extended outward from isolated glades (>250 m from another glade) and non-isolated glades ( <150 m from another glade). 5. Edge effect patterns between nearby glades differed significantly from patterns around isolated glades. When compared to areas outside isolated glades, areas between glades had almost twice the density of trees, half as much large herbivore use, reduced cover of glade-dominant grasses, and different Acacia ant communities. Many of the edge effects observed between non-isolated glades could not be inferred from effects around isolated glades. 6. Synthesis. These findings suggest that edge interactions can alter plant and animal distributions in patchy landscapes. Edge effects near multiple edges can be stronger, weaker or qualitatively different from those near isolated edges. Such edge interactions can increase or decrease structural and functional continuity between nearby patches. Appropriate extrapolation of local edge effects in complex and fragmented landscapes will require greater understanding of edge interactions.

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“…Firstly, the long-term landscape transformation by industrial forestry started in the southern and coastal areas and gradually proceeded towards northern and interior areas (Josefsson and Östlund, 2011). The rapid expansion of the even-aged management in the middle of the 20th century has played a fundamental role in edge creation and fragmentation of Fennoscandian boreal forests (Löfman and Kouki, 2001;Löfman, 2007). Secondly, the size of management units decreases towards the south, due to more private forest owners and smaller holdings, so southern landscapes are more fragmented.…”

Section: Edge Length In Relation To Landscape Variablesmentioning

confidence: 99%

“…Löfman and Kouki (2001) and Löfman (2007) used black-and-white aerial photographs to study the long-term transformation of managed landscapes in Finland. The amount of edge peaked in the 1970s, after the introduction of clearcutting in the 1950s, but was still high in the 1990s, emphasizing that edge quantity may vary strongly over time.…”

Section: Introductionmentioning

confidence: 99%