This paper considers key issues in plant invasion ecology where findings published since 1990 have significantly improved the understanding of many aspects of invasions. The review focuses on vascular plants invading natural and semi-natural
ecosystems, and on fundamental ecological issues relating to species invasiveness and community invasibility.
Modern climate change and shifting ecological states of the Subalpine / Alpine landscape in the swedish scandes
Changement climatique ; Etagement de la végétation ; Montagne ; Suède ; Végétation
Altitudinal zonation of vegetation ; Climatic change ; Mountain ; Sweden ; Vegetation
L'A. présente les résultats d'une observation longue de la végétation dans les montagnes scandinaves dans le cadre d'un réseau de recherche alpine. L'objectif est d'estimer les modifications de l'étage de la végétation alpine dans un futur plus
Geomorphological controls on coastal vegetation at the Virginia Coast Reserve
Biodiversité ; Dynamique de la végétation ; Eau souterraine ; Ecosystème ; Etats-Unis ; Littoral ; Niveau marin ; Salinité ; Virginia ; Végétation
Biodiversity ; Coastal environment ; Ecosystem ; Groundwater ; Salinity ; Sea level ; United States of America ; Vegetation ; Vegetation dynamics ; Virginia
This paper examines the consequences of geomorphologic and hydrologic processes in the establishment of ecologic pattern and process. Specifically, the AA. will focus on the barrier islands of Virginia's Eastern Shore at the site of the National
Science Foundation's Long-term Ecological Research site on the Virginia Coast Reserve.
This paper examines the literature on research into the effects of burial by deposition of blown sand, volcanic deposits (tephra, lavas and lahars) or fluvial sediment on vegetation and the subsequent capacity of the vegetation for survival
is then demonstrated by reference to macahir sand dune stratification in the Outer Hebrides and vegetation damage and burial following proximal volcanic impacts in New Zealand.
Fire in the cerrado (savannas) of Brazil : an ecological review
Biodiversity ; Biogeography ; Brazil ; Ecology ; Environmental management ; Fire ; Savanna
Fire is a major determinant of cerrado (savanna) vegetation in Brazil, and is used as a management tool during the dry season. This article reviews past and present fire ecology studies in the cerrado, (abiotic, biotic, social studies and management
The consequences of implementing Variety C affect a substantially large area. The analysis based on the aerial photographs made in Szigetköz between 1984 and 1998. The changes in the sediment and the vegetation of point bars are also examined from
To examine specific changes in vegetation initiated by the lateral migration of a river channel, the AA. quantify the structures and composition of woody trees and shrubs along a cutbank forest edge in an Iowa floodplain.
Le point sur les études réalisées à l'aide de la télédétection, en 1996 et 1997, concernant l'environnement, la végétation, les glaciers, les sols, la géomorphologie.
Le point sur le lancement des derniers capteurs et l'exploitation des nouvelles données pour les études atmosphériques, océanographiques et terrestres : SeaWifs et MODIS sur EOS-AM1 et IRS-P4, VEGETATION sur SPOT-4.
Non-classificatory analysis and representation of heathland vegetation from remotely sensed imagery
Data processing ; Ecology ; Heathland ; Remote sensing ; Thematic mapping;Thematic cartography ; United Kingdom ; Vegetation
Cartographie thématique ; Ecologie ; Lande ; Royaume-Uni ; Traitement des données ; Télédétection ; Végétation
This paper discusses the representation of semi-natural vegetation, drawing on examples of heathland vegetation that lie along continua. Tow alternative approaches to the representation of heathland vegetation are examined, both of which aim
to model the continuous character of the vegetation with measures of the strength of class membership to « discrete classes », namely probabilities of class membership from a maximum likelihood classification and fuzzy membership functions from the fuzzy c
Vegetation patterns and species-environment relationships in the Gurbantunggut Desert of China
Biodiversité ; Chine ; Colonisation végétale ; Distribution spatiale ; Domaine aride ; Dune ; Désert ; Propriétés du sol ; Sol ; Végétation ; Xinjiang
Arid area ; Biodiversity ; China ; Desert ; Dune ; Plant colonization ; Soil ; Soil properties ; Spatial distribution ; Vegetation ; Xinjiang
varying gradients of environmental factors, such as landform morphology and soil physical and chemical properties. Thus, this paper aims to provide ecological understanding of the relationship between the vegetation patterns and environmental factors
on a quantitative level, to aid vegetation rehabilitation and ecological re-building.
This paper, with CCA and other quantitaive methods, compares the characteristics of vegetation distribution in the longitudinal and transverse directions across the landscape in the Gurbantunggut Desert, and discusses the response to spatially
[b1] Xinjiang Institute of Ecology and Geography, Urumqi, Chine
This review considers the development of wall ecology, highlighting the key characteristics of walls that have been found to influence their ability to support species, with a focus on higher plants. It then examines the kinds of plant assemblages
that are found on walls and the broader role of walls within urban biodiversity, before discussing the potential for ecological engineering of walls. Some progress has recently been made in the latter area with the installation of living walls and the physical
Etude des facteurs en jeu dans la dynamique de la végétation selon les échelles spatio-temporelles. La notion d'échelle est déterminante dans l'appréciation de l'évolution et de la dynamique des espèces et des communautés, et les données empiriques
Action anthropique ; Analyse de sensibilité ; Concept ; Dynamique de la végétation ; Dynamique du paysage ; Ecologie ; Paysage ; Royaume-Uni ; Scotland ; Sol ; Végétation
This paper briefly explores the concept of landscape sensitivity from an ecological perspective by addressing the questions : what is landscape sensitivity, what are the mechanisms of change, and what can landscape change mean for the species living
there ? In discussing the first question, the AA. note the difficulty of achieving a precise definition, though it is vegetation that largely gives landscapes their colour and texture. They explore the other three questions using examples and data from Scotland, mainly
Ecological models at regional and global scales, presentation of a cooperative research agenda; Lund - Copenhagen
Africa ; Ecology ; Ecosystem ; Global change ; Model ; Remote sensing ; Sahel ; Scale ; Spatial distribution ; Vegetation dynamics
Afrique ; Changement global ; Distribution spatiale ; Dynamique de la végétation ; Echelle ; Ecologie ; Ecosystème ; Modèle ; Sahel ; Télédétection
The objective of this research is to work on a new approach to the development of ecological models where all input parameters can actually be measured on a relevant scale (from regional to global), primarily by means of remote sensing.
The primary aim of this paper is to highlight the importance of geostatistical methods in plant ecology and biogeography and to review related issues, concepts and methods. A further aim is to assess the approaches available to assist with spatial
The relation between hydrology aznd vegetation in the Dutch man-made aquatic polder ecosystems has been investigated at two scales : first this of the direct habitat relations between species and the values of non-biotic variables, and secondly
this of the processes in the ecology of the landscape which change these habitats. The results of this study can be applied to restoration projects, if desired target situation is defined. The technical and sustainable measures for restoration have to be incorporated