Landscapemosaic in the treeline ecotone on Mt Rodjanoaivi, Subarctic Finland
Biogeography ; Climatic change ; Ecotone ; Finland ; Landscape ; Mountain ; Periglacial features ; Slope gradient ; Soil properties ; Subarctic zone ; Tree line ; Vegetation dynamics ; Wind
The aim of this paper is to differentiate the landscapemosaic in the treeline ecotone using topography-dependent landscape spatial-ecological units (site types) identified by vegetation, soils and natural drainage classes and to assess
the influence of the landscapemosaic on natural regeneration of the mountain birch. This is demonstrated with examples on the northwest-exposed slope of Rodjanoaivi. Consequently, the landscapemosaic needs to be carefully considered when discussing
Landscape ; Landscape analysis ; Landscape change ; Landscape dynamics ; Landscape ecology ; Madrid ; Spain ; change index ; ecological change ; land use ; landscapemosaics
Landscape is organised in mosaics: sets of patches with a defined pattern of boundaries through which patches interact. Changes in patches cause changes in mosaics. Landscape change has two components: a quantitative one, referring to the areas
in which changes happen, and a qualitative one, referring to the degree of similarity among the mosaics substituting each other. The quantitative component informs on the magnitude of the change: the total area in which landscapemosaics have changed
; the qualitative one informs on the significance thereof: the ecological differences between the mosaics substituting each other. This paper presents an index for quantifying landscape change and for discriminating between magnitude and significance therein
. It was tested by study of changes in the landscapemosaics in Madrid, Spain. Results show that the index developed is useful for this purpose. This enables objective comparison of different landscape changes presenting different combinations of magnitude
Landscape sensitivity in time and space - an introduction
Landscape sensitivity : principles and applications in northern cool temperate environments
Concept ; Environment ; Inherited features ; Landscape ; Model ; Scale ; Sensitivity analysis ; Spatial variation
inherited properties of landscapes : forests, soils, floodplains, coastlines. Landscape sensitivity for landscape management must, therefore, adress not only active, largely nonlinear, environmental systems, but also the mosaics and palimpsests
Landscape sensitivity may be discussed in terms of the response of landscape systems to pertubation on different time and spatial scales. Although we are increasingly able to model the present, environmental management is dominantly about conserving
Surface control of desert pavement pedologic process and landscape function, Cima Volcanic Field, Mojave Desert, California
and hydrologic elements governed by their surface characteristics. The AA. identified 6 unique surface mosaic types for a desert pavement landscape formed on a single-aged basalt flow in the Mojave Desert. They report that these surface mosaics predict
This study identifies the patterning of clast cover as the dominant control of water and sediment distribution across and into this arid landscape. The AA. have found that desert pavement surfaces are a complex association of landscape
Fire : plant functional types and patch mosaic burning in fire-prone ecosystems
/ecosystem. It is followed by a discussion of recent research which offers a critical reappraisal of patch mosaic burning as a means to increase landscape heterogeneity and biodiversity, including the role played by plant functional types in determining
Sarcopoterium spinosum from mosaic structure to matrix structure : Impact of calcrete (Nari) on vegetation in a Mediterranean semi-arid landscape
Calcrete ; Israel ; Landscape ; Landscape structure ; Scrub ; Semi-arid area ; Spatial distribution ; Vegetation
for S.p. dominance is rock coverage below 14%. The results show that the rock/S.p. ratio controls changes in the landscape structure varying from stable heterogenic mosaic to stable homogeneous S.p. matrix.
Sarcopoterium spinosum L. (S.p.) is a common type of dwarf shrub in the eastern Mediterranean area. This study focuses on the semi-arid south-western Judean foothills (Shephelah) in Israel, characterized by a hilly landscape with variable coverage
that rock, an abiotic component, plays an important role in this semi-arid landscape. Among the studied components, the relationship between rock and S.p. was found to be the strongest. As rock presence decreases, S.p. distribution increases. The threshold
Agricultural systems in space and time - the dynamic mosaic of land use
Special issue. Agriculture - systems - landscapes - resources
Agriculture ; Agroecosystem ; Arid area ; Burkina ; Denmark ; Jylland ; Land use ; Landscape analysis ; Niger ; Resource management ; Spatial variation
This article illustrates that the study of landscape changes requires more than land use statistics; a useful approach must be based on spatial sampling. It suggests that tracing the use of a specific unit of land through history can be an efficient
Landscape heterogeneity and disturbance interactions in a subalpine watershed in northern Colorado, USA
Biogenic process ; Colorado ; Fifteenth Century ; Forest ; Forest fire ; Insect ; Landscape ; Landscape analysis ; Mountain ; Plant cover ; Twentieth Century ; United States of America ; Watershed ; Wind
, fire. These disturbances may influence one another temporally and spatially creating a mosaic of disturbance patches.
The significance of soil, water and landscape processes in banded vegetation patterning
Selected physical properties of the soils developed within a strongly-banded grassland in arid New South Wales were investigated to reveal their possible significance for the hydrologic and erosional behaviour of the mosaiclandscape. Detailed
surface microtopography, surface roughness, soil bulk density and the unconfined compressive strength of the soils were determined using linear transects across the banded mosaic.
grassland habitats was investigated in relation to agricultural landscapemosaic. The results show that grasslands enrich the Finnish agricultural landscape both at the habitat and species level. In addition to species-rich semi-natural grasslands, other low
emissions of carbon and other GHG from mosaiclandscapes with forest degradation since most research has focused on binary analyses of forest vs. deforested land. Recent technological advances in remote sensing have improved estimation of carbon stock
[b9] Forest and Landscape of Denmark, Univ., Copenhagen, Danemark
Landsat TM images in mapping of semi-natural grasslands and analysing of habitat pattern in an agricultural landscape in south-west Finland
Agricultural land use ; Classification ; Finland ; Grassland ; Habitat ; LANDSAT ; Remote sensing ; Rural landscape ; Thematic Mapper ; Vegetation index
The AA. analysed the suitability of multi-temporal Landsat TM images in habitat mapping, in particular for the discrimination of semi-natural grasslands. The results showed that even patchy agricultural mosaics can be coarsely mapped with Landsat TM
using the calculated compositional, structural and environmental indices, and 3 main landscape types were identified.
Remote sensing of the earth supplies pictures that allow the detection of objective areals due to the fine mosaic pictures information. A method is described which makes successive use of characteristic values of ever finer indicators
for the distinction of adjoining area patterns of agriculture and forestry and of the natural landscape units corresponding to these patterns. (HL).
Patterns and controls of hurricane-caused forest damage : a landscape-scale analysis of treefall direction following Hurricane Katrina
To clarify broad-scale patterns and controls of treefall directionality from Hurricane Katrina, the AA. examined fall direction across a 4,500 km2 landscapemosaic in southern Mississippi using georeferenced, planar-rectified aerial photographs
and landscape setting. When coupled with results from other studies focused on hurricane-caused damage, these results suggest that it is possible to develop empirical landscape-scale models of wind impacts or stand vulnerability using basic site information
The A. reviews some present-day characteristics of geography and gives some suggestions. The landscape should be understood as a mosaic and very detailed measurements are recommended to solve the special spatial features. On regional geography
of vegetation types : grassland, bushes, wood. Caused by a mosaic of species in the different stages, the research has focused first on aspects of community structures. The dynamics of succession can be influenced by soil factors, ressources and competition
Canada ; Cold area ; Dendrochronology ; Dendrology ; Ice ; Impact ; Lake ; Lake hydrology ; Lake level ; Lake shore ; Landscape structure ; Quebec ; Space time ; Vegetation ; Wave
to the distribution of geomorphological features associated with ice activity along the shoreline. Together, ice-scars and wave exposure index provide essential information to interpret the evolution of lakeshore vegetation mosaics in time and space.
to the present day identifies 4 stages of yedoma degradation and 5 stages of subsequent permafrost aggradation-degradation. These stages can occur in differing places and times, creating a highly complex mosaic of terrain conditions, complicating predictions
of landscape response to future climatic changes or human impact.
This paper describes an attempt to apply unconventional methods in studying the functional structure of a mountain landscape, as exemplified by a research area in north-eastern Sørkappland (Spitsbergen). The approach is based around slope systems
of geoecological catena were described as a result, and their extents determined to display spatial differences. The map arising in this way includes a mosaic of spatial units designated by the same type of functioning and hence dominated by the same geoecological