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Etude de la vitesse d'humidification d'une litière monophytique dans trois chênaies de moyenne Belgique
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Year: 1976 Publisher: Louvain-la-Neuve: [éditeur inconnu],

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Rios de Portugal: Comunidades, Processos e Alterações
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ISBN: 9892616243 9892616235 Year: 2019 Publisher: Coimbra University Press

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The book Rivers of Portugal: Communities, Processes and Alterations appears in a context in which it is recognized the great importance of rivers for the society and in which there is an intense scientific and technical development on the aquatic ecosystems in Portugal. In 17 chapters written by Portuguese researchers, it was intended to cover the various areas of research linked to rivers. Thus, this book begins with the fundamental physical aspects of rivers: hydrology and sedimentology. Eight chapters follow devoted to aquatic organisms: algae, fungi and bacteria, aquatic and riverine vegetation, invertebrates, fish, amphibians and reptiles, mammals, and birds. The following chapters address human activities that cause major changes in ecosystem quality, ecological monitoring, and restoration of degraded river sectors. The last chapters deal with the last section of a river, before the see, the estuaries, and the final one the thermo-mineral springs, environments closely linked to water courses.


Book
Nutrient Cycling in Forest Ecosystems
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Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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The long-term productivity of forest ecosystems depends on the cycling of nutrients. The effect of carbon dioxide fertilization on forest productivity may ultimately be limited by the rate of nutrient cycling. Contemporary and future disturbances such as climatic warming, N-deposition, deforestation, short rotation sylviculture, fire (both wild and controlled), and the invasion of exotic species all place strains on the integrity of ecosystem nutrient cycling. Global differences in climate, soils, and species make it difficult to extrapolate even a single important study worldwide. Despite advances in the understanding of nutrient cycling and carbon production in forests, many questions remain. The chapters in this volume reflect many contemporary research priorities. The thirteen studies in this volume are arranged in the following subject groups: • N and P resorption from foliage worldwide, along chronosequences and along elevation gradients; • Litter production and decomposition; • N and P stoichiometry as affected by N deposition, geographic gradients, species changes, and ecosystem restoration; • Effects of N and P addition on understory biomass, litter, and soil; • Effects of burning on soil nutrients; • Effects of N addition on soil fauna.

Keywords

Research & information: general --- Biology, life sciences --- Forestry & related industries --- leaf stoichiometry --- Cyclocarya paliurus --- geographic variations --- natural populations --- climate variables --- nitrogen --- phosphorus --- N:P ratio --- soil stoichiometry --- soil nutrient --- nutrient limitations --- natural grassland --- natural forest --- soil fauna --- N addition --- soil profile --- community structure --- food resources --- poplar plantations --- experimental nitrogen addition --- understory plant growth --- plant nutrient --- nonstructural carbohydrates --- Alpine treeline --- Nitrogen --- Non-structural carbohydrates --- Phosphorus --- Potassium --- Remobilization --- Storage --- Upper limits --- nutrient resorption --- nitrogen and phosphorous --- planted forests --- climate zones --- plant functional types --- precipitation --- green leaf nutrient --- nitrogen deposition --- N and P colimitation --- leaf N:P stoichiometry --- soil N:P stoichiometry --- seasonal variations --- nutrition resorption --- ecological stoichiometry --- plant-soil feedback --- stand age --- Robinia pseudoacacia L. --- forests --- nutrients --- disturbance --- management --- diversity --- biomass --- soil properties --- experimental fires --- UV-spectroscopy analysis --- thermal infrared thermometer --- nitrogen and phosphorus addition --- understory plants --- stoichiometric ratio --- litter decomposition --- litter standing crop carbon --- conversion coefficient --- climatic factors --- Tibetan Plateau --- shrublands --- Cunninghamia lanceolata --- mixture effect --- nutrient cycling --- rhizosphere effect --- species competition


Book
Nutrient Cycling in Forest Ecosystems
Author:
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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The long-term productivity of forest ecosystems depends on the cycling of nutrients. The effect of carbon dioxide fertilization on forest productivity may ultimately be limited by the rate of nutrient cycling. Contemporary and future disturbances such as climatic warming, N-deposition, deforestation, short rotation sylviculture, fire (both wild and controlled), and the invasion of exotic species all place strains on the integrity of ecosystem nutrient cycling. Global differences in climate, soils, and species make it difficult to extrapolate even a single important study worldwide. Despite advances in the understanding of nutrient cycling and carbon production in forests, many questions remain. The chapters in this volume reflect many contemporary research priorities. The thirteen studies in this volume are arranged in the following subject groups: • N and P resorption from foliage worldwide, along chronosequences and along elevation gradients; • Litter production and decomposition; • N and P stoichiometry as affected by N deposition, geographic gradients, species changes, and ecosystem restoration; • Effects of N and P addition on understory biomass, litter, and soil; • Effects of burning on soil nutrients; • Effects of N addition on soil fauna.

Keywords

leaf stoichiometry --- Cyclocarya paliurus --- geographic variations --- natural populations --- climate variables --- nitrogen --- phosphorus --- N:P ratio --- soil stoichiometry --- soil nutrient --- nutrient limitations --- natural grassland --- natural forest --- soil fauna --- N addition --- soil profile --- community structure --- food resources --- poplar plantations --- experimental nitrogen addition --- understory plant growth --- plant nutrient --- nonstructural carbohydrates --- Alpine treeline --- Nitrogen --- Non-structural carbohydrates --- Phosphorus --- Potassium --- Remobilization --- Storage --- Upper limits --- nutrient resorption --- nitrogen and phosphorous --- planted forests --- climate zones --- plant functional types --- precipitation --- green leaf nutrient --- nitrogen deposition --- N and P colimitation --- leaf N:P stoichiometry --- soil N:P stoichiometry --- seasonal variations --- nutrition resorption --- ecological stoichiometry --- plant-soil feedback --- stand age --- Robinia pseudoacacia L. --- forests --- nutrients --- disturbance --- management --- diversity --- biomass --- soil properties --- experimental fires --- UV-spectroscopy analysis --- thermal infrared thermometer --- nitrogen and phosphorus addition --- understory plants --- stoichiometric ratio --- litter decomposition --- litter standing crop carbon --- conversion coefficient --- climatic factors --- Tibetan Plateau --- shrublands --- Cunninghamia lanceolata --- mixture effect --- nutrient cycling --- rhizosphere effect --- species competition


Book
Nutrient Cycling in Forest Ecosystems
Author:
Year: 2020 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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Export citation

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Bookmark

Abstract

The long-term productivity of forest ecosystems depends on the cycling of nutrients. The effect of carbon dioxide fertilization on forest productivity may ultimately be limited by the rate of nutrient cycling. Contemporary and future disturbances such as climatic warming, N-deposition, deforestation, short rotation sylviculture, fire (both wild and controlled), and the invasion of exotic species all place strains on the integrity of ecosystem nutrient cycling. Global differences in climate, soils, and species make it difficult to extrapolate even a single important study worldwide. Despite advances in the understanding of nutrient cycling and carbon production in forests, many questions remain. The chapters in this volume reflect many contemporary research priorities. The thirteen studies in this volume are arranged in the following subject groups: • N and P resorption from foliage worldwide, along chronosequences and along elevation gradients; • Litter production and decomposition; • N and P stoichiometry as affected by N deposition, geographic gradients, species changes, and ecosystem restoration; • Effects of N and P addition on understory biomass, litter, and soil; • Effects of burning on soil nutrients; • Effects of N addition on soil fauna.

Keywords

Research & information: general --- Biology, life sciences --- Forestry & related industries --- leaf stoichiometry --- Cyclocarya paliurus --- geographic variations --- natural populations --- climate variables --- nitrogen --- phosphorus --- N:P ratio --- soil stoichiometry --- soil nutrient --- nutrient limitations --- natural grassland --- natural forest --- soil fauna --- N addition --- soil profile --- community structure --- food resources --- poplar plantations --- experimental nitrogen addition --- understory plant growth --- plant nutrient --- nonstructural carbohydrates --- Alpine treeline --- Nitrogen --- Non-structural carbohydrates --- Phosphorus --- Potassium --- Remobilization --- Storage --- Upper limits --- nutrient resorption --- nitrogen and phosphorous --- planted forests --- climate zones --- plant functional types --- precipitation --- green leaf nutrient --- nitrogen deposition --- N and P colimitation --- leaf N:P stoichiometry --- soil N:P stoichiometry --- seasonal variations --- nutrition resorption --- ecological stoichiometry --- plant-soil feedback --- stand age --- Robinia pseudoacacia L. --- forests --- nutrients --- disturbance --- management --- diversity --- biomass --- soil properties --- experimental fires --- UV-spectroscopy analysis --- thermal infrared thermometer --- nitrogen and phosphorus addition --- understory plants --- stoichiometric ratio --- litter decomposition --- litter standing crop carbon --- conversion coefficient --- climatic factors --- Tibetan Plateau --- shrublands --- Cunninghamia lanceolata --- mixture effect --- nutrient cycling --- rhizosphere effect --- species competition

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