Unit 4 : Ecosystems -2- www.learner.org 1. Introduction Ecology is the scientific study of relationships in the natural world. It includes relationships between organisms and their physical environments (physiological ecology. Linking Land Surface Phenology and Vegetation-Plot Databases to Model Terrestrial Plant Hamburg, Germany. Department of Environmental Remote Sensing and Geoinformatics, Faculty of Regional and Environmental Sciences, Trier University, Behringstra. Academic Editors: Susan L. Ustin, Parth Sarathi Roy and Prasad S. Thenkabail. Received: 1. November 2. 01. 5 / Revised: 4 April 2. Accepted: 1. 8 April 2. Published: 2. 9 April 2. Abstract In many parts of Africa, spatially- explicit information on plant . We present an approach on how to combine vegetation- plot databases and remotely- sensed land surface phenology (LSP) metrics to predict plant . We gathered data on plant . As predictor variables, we used MODIS LSP metrics averaged over 1. SRTM digital elevation model. Furthermore, we tested whether additional climatic data could improve predictions. We tested three predictor subsets: (1) remote sensing variables; (2) climatic variables; and (3) all variables combined. We used two statistical modeling approaches, random forests and boosted regression trees, to predict vascular plant . The resulting maps showed that the Miombo woodlands of the Angolan Central Plateau featured the highest diversity, and the lowest values were predicted for the thornbush savanna in the Okavango Delta area. Models built on the entire dataset exhibited the best performance followed by climate- only models and remote sensing- only models. However, models including climate data showed artifacts. In spite of lower model performance, models based only on LSP metrics produced the most realistic maps. Furthermore, they revealed local differences in plant diversity of the landscape mosaic that were blurred by homogenous belts as predicted by climate- based models. This study pinpoints the high potential of LSP metrics used in conjunction with biodiversity data derived from vegetation- plot databases to produce spatial information on a regional scale that is urgently needed for basic natural resource management applications. Remote Sens. 2. 01. See further details here. Plant ecology is a subdiscipline of ecology which studies the distribution and abundance of plants, the effects of environmental factors upon the abundance of plants, and the interactions among and between plants and other. Department of Plant Sciences Research Groups by strategic themes; Cereal Symbiosis. Group members; PhD studentships; Circadian Signal Transduction; Developmental Biology; Ecosystems and Global Change; Epidemiology and. Plant Ecology publishes original scientific papers that report and interpret the findings of pure and applied research into the ecology of vascular plants in terrestrial and wetland ecosystems. Empirical, experimental, theoretical. Definitions of Ecology. An increased public awareness of environmental problems has made ecology a common but often misused word. Ecology is the scientific study of the interactions of organisms with one another and with the.
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