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  • Human impacts on a floodplain : the case of Háros Island, Budapest
  • Budapest ; Danube ; Ecosystem ; Floodplain ; Forest ; Geo-ecology ; Grassland ; Human impact ; Hungary ; Island ; Microrelief ; Plant cover ; Vegetation
  • Action anthropique ; Budapest ; Couverture végétale ; Danube ; Ecosystème ; Formation herbacée ; Forêt ; Géo-écologie ; Hongrie ; Ile ; Microrelief ; Plaine d'inondation ; Végétation ; Végétation ripicole
  • Háros Island is a peninsula in the Danube section at Budapest. Since the 1950's it has been closed to the public, but the impacts of the nearby industrial and previous forestry activities are still felt today. The question arises whether
  • there is any relationship between the microrelief and the soil/vegetation pattern and how it is manifested in the species composition of indicator plants under natural and disturbed conditions.
  • Iron age vegetation dynamics and human impacts on the vegetation of upper Mun River floodplain, N.E. Thailand
  • John Roger Flenley : plants, pollen and people. Special issue
  • Agricultural land use ; Deforestation ; Floodplain ; Holocene ; Human impact ; Iron Age ; Palaeo-ecology ; Palaeogeography ; Palynology ; Pollen diagram ; Thailand ; Vegetation dynamics
  • Action anthropique ; Age du fer ; Diagramme pollinique ; Dynamique de la végétation ; Déboisement ; Holocène ; Palynologie ; Paléo-écologie ; Paléogéographie ; Plaine d'inondation ; Thaïlande ; Utilisation agricole du sol
  • the latter half of the Thai Iron Age. They also identify ecological groups and landscape partitioning patterns during that period. In particular, they record phases of human impact, with periods of forest clearance and its replacement by grasslands
  • The AA. present a revised interpretation of pollen analyses at Iron Age archaeological sites on the floodplain of the Mun River. They present a vegetation history of the study area that is confined to the details of land use and human impact during
  • Austria ; Danube ; Digital elevation model ; Ecosystem ; Floodplain ; Hydraulic works ; Impact ; Nineteenth Century ; Riparian vegetation ; Stream ; Twentieth Century
  • Aménagement hydraulique ; Autriche ; Cours d'eau ; Danube ; Ecosystème ; Impact ; Modèle numérique de terrain ; Plaine d'inondation ; Siècle 19 ; Siècle 20 ; Végétation ripicole
  • This study compares new references data derived from 3D-reconstructions in the form of digital terrain models from 2 historical Danube river landscapes : the Machland floodplain in 1812 and the former floodplain in Vienna in 1849. The focus
  • is on the original hydrological surface and subsurface connectivity of the river-floodplain systems related to different flow situations. Here, the AA. use water cover, shorelines, depth of the groundwater table and inundation depth as surrogates for measuring
  • connectivity. The results show that the 2 study sites naturally constituted extreme formations of the Austrian anabranching Danube sections : the Machland section, one of the narrowest floodplains but highly dynamic, and the Vienna/Lobau section, one
  • of the broadest. Prior to channelization, the groundwater conditions in both floodplains favored the formation of wet to moist alluvial forest communities. Up until today, the 2 rivers landscapes continue to undergo different developments (rural site / building
  • land). This analysis addresses the extent to which they have undergone morphological changes due to the various human interventions and whether this has degraded the riverine ecosystem.
  • [b1] Inst. of Hydrobiology and Aquatic Ecosystem Management. Univ. of Natural Resources and Applied Life Sciences, Vienne, Autriche
  • [b4] Wasser Cluster Lunz - Inter-University center for freshwater ecosystem research, Lunz am See, Autriche
  • Vegetation change and the role of atmospheric CO2 enrichment on a relict site in Central Oregon: 1960-1944
  • Carbon dioxide ; Ecosystem ; Fire ; Grassland ; Habitat ; Human impact ; Oregon ; Photosynthesis ; Plant cover ; Scrub ; United States of America ; Vegetation ; Vegetation dynamics
  • Action anthropique ; Couverture végétale ; Dioxyde de carbone ; Dynamique de la végétation ; Ecosystème ; Etats-Unis ; Feu ; Formation arbustive ; Formation herbacée ; Habitat ; Oregon ; Photosynthèse ; Végétation
  • To explore the role of the rising CO2 content of the earth's atmosphere as an agent of vegetation change, the AA. revisited (june 1994) the Island Research Natural Area (IRNA), a relict site of semi-arid vegetation in central Oregon, to conduct
  • a replicate survey of Driscoll's 1960 work. They conclude that the vegetation changes observed are consistent with laboratory and controlled field experiments that enrich the air with CO2.
  • Assessment of the effects of biophysical and anthropogenic factors on woody plant encroachment in dense and sparse mountain grasslands based on remote sensing data
  • Aragón ; Grassland ; Human impact ; LANDSAT ; Mountain ; Pyrénées ; Remote sensing ; Scrub ; Spain ; Thematic Mapper ; Vegetation ; Vegetation dynamics
  • Action anthropique ; Années 1984-2011 ; Aragón ; Dynamique de la végétation ; Espagne ; Formation arbustive ; Formation herbacée ; LANDSAT ; Montagne ; Pyrénées ; Thematic Mapper ; Télédétection ; Végétation
  • biophysical and anthropogenic factors that were significantly correlated with woody plant encroachment of dense and sparse grasslands. Distance to the nearest woody plant habitat (shrub or forest) was the most strongly correlated factor with woody plant
  • and mid-2000s were analyzed by supervised classification for identification of land cover types. The transition matrix indicated that shrublands were the most dynamic plant communities. Generalized additive mixed models (GAMMs) were used to identify
  • encroachment of both types of grassland. This factor explained 69% and 71% of the variance in models of dense and sparse grasslands, respectively. The observed changes in land cover indicated that land cover has become more homogeneous.
  • This study assessed woody plant encroachment below potential tree line in the Central Pyrenees of Spain and the association of this encroachment with changes in land use. Remote sensing data from Landsat-5 Thematic Mapper (TM) from the mid-1980s
  • Effects of human disturbance on the dune vegetation of the Georgia Sea Islands
  • Biodiversity ; Coastal environment ; Dune ; Ecology ; Georgia (USA) ; Human impact ; Island ; Plant cover ; Taxonomy ; United States of America ; Vegetation
  • Action anthropique ; Biodiversité ; Couverture végétale ; Dune ; Ecologie ; Etats-Unis ; Georgia ; Ile ; Littoral ; Taxonomie ; Végétation
  • This research investigates how human disturbance has affected foredune vegetation of the Georgia Sea Islands (GSI) in the United States. Both two-factor analysis of variance, ANOVA, and nonmetric multidimensional scaling, NMS, agree that dunes
  • in human-modified areas have lower dune-grass cover and greater cover of species that are not adapted to building and stabilizing dunes. Therefore, human disturbance may indirectly reduce dune stability by altering the dune vegetation.
  • Spatial patterns of hydrology, geomorphology, and vegetation o the floodplain of the Amazon River in Brazil from a remote sensing perspective
  • Amazonas River ; Biodiversity ; Brazil ; Drainage ; Floodplain ; Geomorphology ; Humid environment ; Hydrology ; LANDSAT ; Remote sensing ; River bed ; Spatial variation ; Statistics ; Stream ; Thematic Mapper ; Vegetation
  • Amazonas rio ; Biodiversité ; Brésil ; Cours d'eau ; Drainage ; Géomorphologie ; Hydrologie ; LANDSAT ; Lit fluvial ; Milieu humide ; Plaine d'inondation ; Statistique ; Thematic Mapper ; Télédétection ; Variation spatiale ; Végétation
  • heterogeneity appears to be impacted by human activities, in that flooded forest covvers a smaller percent of the floodplain.
  • Using semivariance statistics, the AA. analyze the spatial relationship between the hydrogeomorphology and the pattern of vegetation cover of the Amazon River floodplain in Brazil during high water. Classified Landsat images for three reaches
  • of the river that represent the geomorphology of thhe channel-floodplain system were analysed to show the upstream to downstream variation in the spatial heterogeneity of the floodplain environments. In addition to hydrogeomorphic inluence, vegetation
  • Fire : plant functional types and patch mosaic burning in fire-prone ecosystems
  • Biodiversity ; Biogeography ; Boreal area ; Conifer ; Ecosystem ; Environmental management ; Fire ; Forest ; Heathland ; Impact ; Mediterranean area ; Mountain ; Savanna ; Scrub ; Taxonomy ; Vegetation
  • Biodiversité ; Biogéographie ; Conifère ; Domaine méditerranéen ; Ecosystème ; Feu ; Formation arbustive ; Forêt ; Gestion de l'environnement ; Impact ; Lande ; Montagne ; Savane ; Taxonomie ; Végétation ; Zone boréale
  • The focus of this paper is on the occurrence of fire in fire-prone ecosystems, in which plant species have evolved fire-survival and/or fire-persistence traits that may even be necessary for the continued existence of the vegetation community
  • diversity. The fire-prone ecosystems of mediterranean-type shrublands and heathlands, savannas and grasslands, and boreal and other coniferous forests are the main geographic focus of the paper.
  • /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
  • The impact of fire in the Canarian ecosystems 1983-1998
  • Canary Islands ; Ecosystem ; Erosion ; Fire ; Forest ; Forest fire ; Human impact ; Impact study ; Island ; Soil ; Vegetation ; Water balance
  • Action anthropique ; Bilan hydrologique ; Canaries ; Ecosystème ; Erosion ; Etude d'impact ; Feu ; Forêt ; Ile ; Incendie de forêt ; Sol ; Végétation
  • L'A. fait la synthèse de 15 ans d'études sur les écosystèmes des îles Canaries soumis au feu. Il en résulte que la dégradation des forêts n'est pas due à l'impact du feu mais bien plutôt aux pratiques d'utilisation du sol et à une trop forte
  • situations géo-écologiques. Le principal problème écologique est l'usage abusif du feu par l'homme et l'impact anthropique toujours plus grand sur les milieux naturels des îles.
  • Vegetation succession and soil cover transformation after extreme flood : a case study from the Sázava River floodplain
  • Czech Republic ; Flood ; Floodplain ; Plant cover ; Plant succession
  • Cobertura vegetal ; Crecida ; Llanura de inundación ; Sucesión vegetal
  • The goal of this study was to assess impact of flood on soil and vegetation cover in the Sázava river floodplain after an extreme spring flood in 2006.There was a significant difference in species' composition between eroded sites and sites on thick
  • layers of sediments each year as hypothesized. There was also significant difference in vegetation succession between site types. - (EN)
  • Cours d'eau ; Ecosystème ; Fragmentation ; Habitat ; Impact ; Nouvelle-Zélande ; Poisson ; South Island ; Végétation ripicole
  • Ecosystem ; Fish ; Habitat ; Impact ; New Zealand ; Riparian vegetation ; South Island ; Stream
  • forest margins. They sampled pools in streams flowing from native podocarp/broad-leaf forests into grassland using traps. They found that terrestrial fragmentation can impact stream fish populations by decreasing their occupancy of habitats
  • The AA. examined effects of forest fragmentation on banded kokopu and longfin eels in new Zealand. They hypothesized that the densities of banded kokopu would be higher in forested than grassland streams, and the densities would be lower around
  • Interactions between semi-natural vegetation and hydrogeomorphological processes
  • Ecosystem ; England ; Forest ; Heath ; Hydrology ; Land use ; Plant cover ; Resource management ; Soil conservation ; United Kingdom ; Vegetation ; Watershed
  • Bassin-versant ; Bruyère ; Conservation des sols ; Couverture végétale ; Ecosystème ; England ; Forêt ; Gestion des ressources ; Hydrologie ; Royaume-Uni ; Utilisation du sol ; Végétation
  • This paper reports on hydrogeomorphological research undertaken within a drainage basin, in the New Forest, which contains two types of semi-natural vegetation cover which are a diminishing resource within the UK: lowland heath and floodplain forest
  • . This research investigates interactions between vegetation and hydrogeomorphological processes, but also focuses more specfically on developing a fuller understanding of the hydrogeomorphological functioning of drainage basins under these two diminishing cover
  • The ecological impact of cattle on caulescent Andean rosettes in a high Venezuelan paramo
  • Andes ; Applied ecology ; Cattle ; Livestock farming ; Meadow;Grassland ; Mountain ; Vegetation degradation ; Venezuela
  • Andes ; Bovin ; Dégradation de la végétation ; Ecologie appliquée ; Elevage ; Montagne ; Prairie ; Venezuela
  • Cattle began to affect the Paramo de Piedras Blancas in the nineteenth century. Browsing the leaves of one rosette species, « Coespeletia timotensis », has severely affected almost half the plant cover in places.―(DWG)
  • Soil erosion and surface runoff on different vegetation covers and slope gradients : A field experiment in Southern Shaanxi Province, China
  • Agricultural land use ; China ; Deforestation ; Experiment plot ; Human impact ; Plant cover ; Shaanxi ; Slope gradient ; Soil erosion ; Soil properties ; Water erosion
  • Acción antrópica ; Aprovechamiento agrícola del suelo ; Chensi ; China ; Cobertura vegetal ; Desmonte ; Erosión de los suelos ; Erosión hídrica ; Inclinación de la vertiente ; Parcela experimental ; Propiedades del suelo
  • , and forestlands including low and high forests (Chinese cork-oak coppices and pine plantations, respectively). The change in the runoff among the vegetation covers and slope gradients was high but not as significantly pronounced as for the change in the soil loss
  • . Results showed that the slope gradient has an impact on the runoff and soil loss. In addition, results exhibited that the rate of erosion is substantially affected by changes in vegetation cover.
  • A field experiment in the Shangnan County using small erosion plots was carried out to determine and compare the soil loss and surface runoff from 5 vegetation covers and 3 levels of slope gradient. The 5 vegetation covers embraced the most frequent
  • rural land-use forms in the study area : farmlands including horticulture (tea plantation with peanut as an intercrop) and agriculture (maize in a winter-wheat–summer-maize rotation) activities, grasslands that have developed on abandoned farmlands
  • Early nineteenth-century grasslands of the Midcontinent Plains
  • Biogeography ; Ecosystem ; Grassland ; Historical geography ; Human impact ; Palaeobotany ; Palynology ; Taxonomy ; Thematic mapping ; United States ; Vegetation dynamics
  • Action anthropique ; Biogéographie ; Cartographie thématique ; Dynamique de la végétation ; Ecosystème ; Etats-Unis ; Formation herbacée ; Géographie historique ; Palynologie ; Paléoflore ; Taxonomie
  • The A. examines ecological theory, existing maps, and explorer journals, with the support of data on contemporary grass patterns and interpretation of the grassland paleobotanical record built from anlyses of opal phytoliths that were contained
  • Impacts and timing of the first human settlement on vegetation of the Faroe Islands
  • C 14 dating ; Charcoal ; Climatic variation ; Faeroe Islands ; Geo-ecology ; Geochronology ; Human impact ; Palynology ; Pollen diagram ; Quaternary ; Settlement history
  • Action anthropique ; Charbon de bois ; Datation C 14 ; Diagramme pollinique ; Féroé ; Géo-écologie ; Géochronologie ; Histoire du peuplement ; Palynologie ; Quaternaire ; Variation climatique
  • Stratigraphically precise AMS-radiocarbon-dated plant remains, pollen, charcoal, and microtephra analyses from the Faroe Islands were used to establish the timing and effects of the first human settlement. The first occurrence of cultivated crops
  • from 3 locations dated from as early as the sixth century A.D. and was older than implied from previous archaeological and historical studies, but consistent with earlier palaeoecological investigations. The effects of settlement on the vegetation were
  • Simulating icelandic vegetation cover during the Holocene implications for long-term land degradation
  • Birch ; Climatic variation ; Forest ; Holocene ; Human impact ; Human occupation ; Iceland ; Model ; Palaeo-environment ; Palynology ; Simulation ; Vegetation ; Vegetation degradation
  • Action anthropique ; Bouleau ; Dégradation de la végétation ; Forêt ; Holocène ; Islande ; Modèle ; Occupation humaine ; Palynologie ; Paléo-environnement ; Simulation ; Variation climatique ; Végétation
  • The AA. have simulated the spatial relationship between temperature change and long-term potential vegetation cover dynamics. The results show that the potential vegetation and birch forest range is highly sensitive to the temperature conditions
  • Monitoring the effects of land use and cover type changes on soil moisture using remote-sensing data : a case study in China's Yongding River basin
  • China ; Cultivated land ; Eastern China ; Forest ; Grassland ; LANDSAT ; Land use ; Model ; Plant cover ; Remote sensing ; Soil moisture ; Surface temperature ; Thematic Mapper ; Vegetation index ; Watershed
  • Années 1987-2005 ; Bassin-versant ; Chine ; Chine de l'Est ; Couverture végétale ; Formation herbacée ; Forêt ; Humidité du sol ; Indice de végétation ; LANDSAT ; Modèle ; Sol cultivé ; Température de surface ; Thematic Mapper ; Télédétection
  • Aprovechamiento del suelo ; Bosque ; China ; China del Este ; Cobertura vegetal ; Cuenca hidrográfica ; Formación herbácea ; Humedad del suelo ; LANDSAT ; Modelo ; Suelo cultivado ; Teledetección ; Temperatura de superficie ; Thematic Mapper
  • a land use and cover type map by classification of the Landsat images, and used the map to study the influence of land use and cover type changes on soil moisture : farmland converted into grassland; grassland converted into farmland; and forest converted
  • relationship space, they analyzed the scatterplot of Ts versus NDVI to calculate a temperature–vegetation dryness index (TVDI). They used a linear regression model between soil moisture and TVDI to estimate soil moisture to depths of 10 and 20 cm. They produced
  • into grassland.
  • [b1] State Key Lab. of Earth Surface Processes and Resource Ecology, Normal Univ., Beijing, Chine
  • A method for regional-scale assessment of vegetation recovery time after high-severity wildfires : Case study of Spain
  • Ecosystem ; Forest fire ; Grassland ; Model ; Plant species ; Precipitation ; Recovery time ; Scrub ; Soil erosion ; Soil properties ; Spain ; Spatial distribution ; Vegetation ; Vegetation index
  • Distribution spatiale ; Ecosystème ; Erosion des sols ; Espagne ; Espèce végétale ; Formation arbustive ; Formation herbacée ; Incendie de forêt ; Indice de végétation ; Modèle ; Propriétés du sol ; Précipitation ; Temps de récupération ; Végétation
  • Distribución espacial ; Ecosistema ; Erosión de los suelos ; España ; Especie vegetal ; Formación arbustiva ; Formación herbácea ; Incendio forestal ; Modelo ; Precipitación ; Propiedades del suelo ; Vegetación ; Índice de vegetación
  • The methodology is based on map algebra and a geographical information system, which enabled calculation of the approximate time required to restore vegetation to conditions similar to pre-fire regarding plant height and canopy cover. The AA
  • . considered, first, the vegetation in the territory, characterized by the structure of the dominant plant community (tree, shrub, or grassland) and its regeneration strategy (resprouter or seeder); and, second, two of the main factors determining recovery time
  • – water availability and soil loss. They also considered the influence of observed rainfall trends over the past 50 years on these latter two factors. The methodology, applied to Spain, highlighted significant differences in plant communities between
  • Tropical savannas and associated forests : vegetation and plant ecology
  • Bibliography ; Biodiversity ; Biogeography ; Ecosystem ; Forest-savanna transition ; Phenology ; Savanna ; Tropical zone ; Vegetation dynamics
  • Bibliographie ; Biodiversité ; Biogéographie ; Contact forêt-savane ; Dynamique de la végétation ; Ecosystème ; Phénologie ; Savane ; Zone intertropicale
  • This review (2002-2006) concentrates upon research relating to plant ecology, examining issues of diversity, boundaries and equilibrium theories, and studies of individual species of tropical savannas and associated forests.