Millennium Ecosystem Assessment. Conservation Ecology: A framework for evaluating land use planning alternatives: protecting biodiversity on private land. Copyright © 2002 by the author(s). Published here under license by The Resilience Alliance.Go to the pdf version of this article. The following is the established format for referencing this article: Theobald, D.
M. and N. T. Hobbs. 2002. A framework for evaluating land use planning alternatives: protecting biodiversity on private land. Conservation Ecology 6(1): 5. A version of this article in which text, figures, tables, and appendices are separate files may be found by following this link. Report A Framework for Evaluating Land Use Planning Alternatives: Protecting Biodiversity on Private Land David M. 1Colorado State University/The Nature Conservancy; 2Colorado State University/Colorado Division of Wildlife Planning activities by local government often seek to identify areas of land that offer particularly high value for conserving biotic resources. Published: February 14, 2002 Two types of planning typically occur at the county level: site review and master planning. Spatial modeling. La sixième extinction de masse menace un quart des mammifères. Comme un quart des mammifères, cette espèce de chauve-souris africaine encore non identifiée est menacée par la disparition de son habitat. © bayanga85, Flickr, CC by-sa 2.0 La sixième extinction de masse menace un quart des mammifères - 4 Photos Partez à la découverte de la biodiversité de notre planète Depuis plusieurs années, les biologistes s’alarment face à la disparition des espèces animales et végétales de plus en plus rapide.
Une nouvelle étude basée sur un long travail de recherche fait le bilan de la situation actuelle et des efforts de protection de la biodiversité. En plus d’un travail de synthèse des données existantes, l’équipe internationale de chercheurs a effectué un énorme effort de collecte d’information et de recensement d’espèces sur le terrain. Des efforts entrepris mais un bilan encore alarmant Un constat : la pression croissante des activités humaines sur l’environnement dépasse de loin les efforts de protection entrepris. Et chez nous ? A voir aussi sur Internet. UMR AMAP - botAnique et bioinforMatique de l'Architecture des plantes. Mots clés Changement d'échelle, Complexité écologique, Hétérogénéité spatiale, Interactions entre plantes, Peuplements végétaux, Paysages, Structure tridimensionnelle, Restauration et gestion d'écosystèmes fragiles, Systèmes dynamiques, Télédétection Objectifs L'objectif de l'équipe est de comprendre, modéliser puis prédire, à différentes échelles spatio-temporelles, l'organisation et la dynamique des couverts végétaux, essentiellement forestiers et agro-forestiers, dans des contextes variés, notamment tropicaux : Comment une modélisation parcimonieuse de la dynamique locale peut-elle permettre une compréhension de la dynamique d’ensemble d’un peuplement et de certaines de ses propriétés collectives, voire émergentes (distributions spatiales, coexistence d'espèces, etc.) ?
Projets. A multidisciplinary modelling approach to analyse and predict the effects of landscape dynamics on biodiversity. Personnel AMAP. (Master degree course SIIG3T 2007-2010, AgroParisTech, C. Gaucherel) Why model landscapes? Landscape modelling finds its basis at the interface between landscape ecology and (mathematical or algorithmic) modelling fields. Landscape modelling is an emerging discipline that recognises the valuable inputs of any kind of models, in order to better understand landscape origins and landscape dynamics. Landscape modelling recognises that heterogeneous spatial and temporal patterns are critical factors in understanding how environmental systems work across a range of scales.Landscape modelling provides concepts and tools that focus on spatial and dynamic quantifications as well as interactive processes for the interpretation of complex landscapes.Fundamental concepts of landscape modelling serve as foundations for theoretical studies as well as decision-making and problems such as conservation biology or land-use management.
Course objectives Course schedule 1. 2. 3. 4. Logiciels AMAP - MHM (for Multiscale Heterogeneity Map) Logiciels AMAP - CMP (for Correlation Map and Profile) Fitness landscape. The idea of studying evolution by visualizing the distribution of fitness values as a kind of landscape was first introduced by Sewall Wright in 1932.[1] In evolutionary optimization problems, fitness landscapes are evaluations of a fitness function for all candidate solutions (see below). In biology[edit] In all fitness landscapes, height represents fitness.
There are three distinct ways of characterizing the other dimensions.[2] Fitness landscapes are often conceived of as ranges of mountains. There exist local peaks (points from which all paths are downhill, i.e. to lower fitness) and valleys (regions from which most paths lead uphill). A fitness landscape with many local peaks surrounded by deep valleys is called rugged. Genotype to fitness landscapes[edit] Wright visualized a genotype space as a hypercube.[1] No continuous genotype "dimension" is defined. Stuart Kauffman's NK model falls into this category of fitness landscape. Allele frequency to fitness landscapes[edit] See also[edit]