Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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    Leidraad beheersing eikenprocessierups uitgebracht: De EPR
    Spijker, J.H. - \ 2020
    Stadswerk (2020)4. - ISSN 0927-7641 - p. 11 - 13.
    invasive species - well-being - health - trees - Quercus robur - ecosystem services
    Vorig jaar hebben we ervaren dat de eikenprocessierups onze gezondheid en ons welbevinden aanzienlijk kan schaden. Wat is een effectieve aanpak om de overlast te beheersen zonder onnodig hoge beheerkosten te maken? De ‘Leidraad beheersing eikenprocessierups’ die onlangs werd uitgebracht, geeft antwoorden.
    Stedelijk groen helpt tegen klimaatverandering
    Spijker, J.H. ; Lerink, Bas - \ 2020
    Vakblad Natuur Bos Landschap (2020)163. - ISSN 1572-7610 - p. 21 - 24.
    biobased economy - green infrastructure - biomass - wood - trees - carbon sequestration - towns
    In het klimaatakkoord is de rol die stedelijk groen kan spelen voor de klimaatopgave onderbelicht. Dat is jammer, omdat de oppervlakte van steden, dorpen en infrastructuur in Nederland aanzienlijk is. En het aardige van stedelijk groen is dat dit naast het vastleggen van CO2, ook kan bijdragen aan aanpassing aan klimaatverandering: wateropvang bij piekbuien en verkoeling van de stad tijdens hittegolven.
    Similar factors underlie tree abundance in forests in native and alien ranges
    Sande, Masha T. van der; Bruelheide, Helge ; Dawson, Wayne ; Dengler, Jürgen ; Essl, Franz ; Field, Richard ; Haider, Sylvia ; Kleunen, Mark van; Kreft, Holger ; Pagel, Joern ; Pergl, Jan ; Purschke, Oliver ; Pyšek, Petr ; Weigelt, Patrick ; Winter, Marten ; Attorre, Fabio ; Aubin, Isabelle ; Bergmeier, Erwin ; Chytrý, Milan ; Dainese, Matteo ; Sanctis, Michele De; Fagundez, Jaime ; Golub, Valentin ; Guerin, Greg R. ; Gutiérrez, Alvaro G. ; Jandt, Ute ; Jansen, Florian ; Jiménez-Alfaro, Borja ; Kattge, Jens ; Kearsley, Elizabeth ; Klotz, Stefan ; Kramer, Koen ; Moretti, Marco ; Niinemets, Ülo ; Peet, Robert K. ; Penuelas, Josep ; Petřík, Petr ; Reich, Peter B. ; Sandel, Brody ; Schmidt, Marco ; Sibikova, Maria ; Violle, Cyrille ; Whitfeld, Timothy J.S. ; Wohlgemuth, Thomas ; Knight, Tiffany M. - \ 2020
    Global Ecology and Biogeography 29 (2020)2. - ISSN 1466-822X - p. 281 - 294.
    abundance - dissimilarity - forest - functional traits - global - plant invasion - trees

    Aim: Alien plant species can cause severe ecological and economic problems, and therefore attract a lot of research interest in biogeography and related fields. To identify potential future invasive species, we need to better understand the mechanisms underlying the abundances of invasive tree species in their new ranges, and whether these mechanisms differ between their native and alien ranges. Here, we test two hypotheses: that greater relative abundance is promoted by (a) functional difference from locally co-occurring trees, and (b) higher values than locally co-occurring trees for traits linked to competitive ability. Location: Global. Time period: Recent. Major taxa studied: Trees. Methods: We combined three global plant databases: sPlot vegetation-plot database, TRY plant trait database and Global Naturalized Alien Flora (GloNAF) database. We used a hierarchical Bayesian linear regression model to assess the factors associated with variation in local abundance, and how these relationships vary between native and alien ranges and depend on species’ traits. Results: In both ranges, species reach highest abundance if they are functionally similar to co-occurring species, yet are taller and have higher seed mass and wood density than co-occurring species. Main conclusions: Our results suggest that light limitation leads to strong environmental and biotic filtering, and that it is advantageous to be taller and have denser wood. The striking similarities in abundance between native and alien ranges imply that information from tree species’ native ranges can be used to predict in which habitats introduced species may become dominant.

    Current climate, isolation and history drive global patterns of tree phylogenetic endemism
    Sandel, Brody ; Weigelt, Patrick ; Kreft, Holger ; Keppel, Gunnar ; Sande, Masha T. van der; Levin, Sam ; Smith, Stephen ; Craven, Dylan ; Knight, Tiffany M. - \ 2020
    Global Ecology and Biogeography 29 (2020)1. - ISSN 1466-822X - p. 4 - 15.
    biogeography - climate stability - historical contingency - islands - isolation - phylogenetic endemism - trees

    Aim: We mapped global patterns of tree phylogenetic endemism (PE) to identify hotspots and test hypotheses about possible drivers. Specifically, we tested hypotheses related to current climate, geographical characteristics and historical conditions and assessed their relative importance in shaping PE patterns. Location: Global. Time period: We used the present distribution of trees, and predictors covering conditions from the mid-Miocene to present. Major taxa studied: All seed-bearing trees. Methods: We compiled distributions for 58,542 tree species across 463 regions worldwide, matched these to a recent phylogeny of seed plants and calculated PE for each region. We used a suite of predictor variables describing current climate (e.g., mean annual temperature), geographical characteristics (e.g., isolation) and historical conditions (e.g., tree cover at the Last Glacial Maximum) in a spatial regression model to explain variation in PE. Results: Tree PE was highest on islands, and was higher closer to the equator. All three groups of predictor variables contributed substantially to the PE pattern. Isolation and topographic heterogeneity promoted high PE, as did high current tree cover. Among mainland regions, temperature seasonality was strongly negatively related to PE, while mean annual temperature was positively related to PE on islands. Some relationships differed among the major floristic regions. For example, tree cover at the Last Glacial Maximum was a positive predictor of PE in the Palaeotropics, while tree cover at the Miocene was a negative predictor of PE in the Neotropics. Main conclusions: Globally, PE can be explained by a combination of geographical, historical and current factors. Some geographical variables appear to be key predictors of PE. However, the impact of historic and current climate variables differs considerably among the major floristic regions, reflecting their unique histories. Hence, the current distribution of trees is the result of globally relevant geographical drivers and regional climatic histories.

    Data from: Current climate, isolation and history drive global patterns of tree phylogenetic endemism
    Sandel, Brody ; Weigelt, Patrick ; Kreft, Holger ; Keppel, Gunnar ; Sande, Masha van der; Levin, Sam ; Smith, Stephen ; Craven, Dylan ; Knight, Tiffany M. - \ 2019
    Dryad
    trees - endemism - Biogeography - historical contingency - phylogenetic endemism - isolation - islands - current - species richness - climate stability
    Aim: We mapped global patterns of tree phylogenetic endemism (PE) to identify hotspots and test hypotheses about possible drivers. Specifically, we tested hypotheses related to current climate, geographical characteristics and historical conditions, and assessed their relative importance in shaping PE patterns. Location: Global. Time period: We used the present distribution of trees, and predictors covering conditions from the mid-Miocene to present. Major taxa studied: All seed-bearing trees. Methods: We compiled distributions for 58,542 tree species across 463 regions worldwide, matched these to a recent phylogeny of seed plants, and calculated PE for each region. We used a suite of predictor variables describing current climate (e.g. mean annual temperature), geographical characteristics (e.g. isolation) and historical conditions (e.g. tree cover at the last glacial maximum) in a spatial regression model to explain variation in PE. Results: Tree PE was highest on islands, and was higher closer to the equator. All three groups of predictor variables contributed substantially to the PE pattern. Isolation and topographic heterogeneity promoted high PE, as did high current tree cover. Among mainland regions, temperature seasonality was strongly negatively related to PE, while mean annual temperature was positively related to PE on islands. Some relationships differed among the major floristic regions. For example, tree cover at the last glacial maximum was a positive predictor of PE in the Paleotropics, while tree cover at the Miocene was a negative predictor of PE in the Neotropics. Main conclusions: Globally, PE can be explained by a combination of geographic, historical, and current factors. Some geographic variables appear to be key predictors of PE. However, the impact of historic and current climate variables differs considerably among the major floristic regions, reflecting their unique histories. Hence, the current distribution of trees is the result of globally relevant geographic drivers and regional climatic histories.
    Bossen in de berm: geschikt als biomassa en bouwmateriaal?
    Copini, P. - \ 2019
    In: TO2 Impactrapportage 2019 TO2 Federatie - p. 6 - 6.
    biobased economy - forests - trees - roads - roadsides - Netherlands - biobased economy - forestry - netherlands - biomass - building materials - climate
    Dossier Nature Based Solutions
    Spijker, J.H. - \ 2019
    Wageningen : Groen Kennisnet
    urban planning - ecosystem services - urban areas - greening - health - heat resistance - trees - climatic change - water holding capacity - biodiversity - population education - mobility - well-being - gardens - air pollution
    Het leefbaar houden van steden en dorpen is een belangrijke uitdaging van deze tijd. Daarnaast zorgt klimaatverandering voor een toenemende vraag naar slimme oplossingen om in te spelen op extremere weersomstandigheden. Het vergroenen van steden en dorpen biedt niet alleen een oplossing voor klimaatgerelateerde problemen, maar bevordert ook het woonplezier en de gezondheid van bewoners. Dit dossier laat zien hoe slimme groene oplossingen kunnen helpen bij de inrichting en het beheer van woongebieden ter bevordering van de leefbaarheid en klimaatadaptatie. Thema's zoals biodiversiteit, adaptatie en mitigatie komen aan bod.
    Nature Based Solutions
    Spijker, J.H. - \ 2019
    urban planning - urban areas - ecosystem services - greening - health - water - heat resistance - trees - climatic change - water holding capacity - biodiversity - stress - population education - mobility
    Voor de uitdagingen van de stad 21e eeuw: 25 jaar VBG, Wageningen 22 maart 2019
    Greenery: more than beauty and health : The positive effects of greenery in urban environments
    Hiemstra, J.A. ; Vries, S. de; Spijker, J.H. - \ 2019
    Wageningen : Wageningen University & Research - 6 p.
    health - well-being - plants - trees - reconditioning - air quality - biodiversity - air conditioning - learning - labour - green roofs - green walls - gezondheid - welzijn - planten - bomen - herstellen - luchtkwaliteit - biodiversiteit - klimaatregeling - leren - arbeid (werk) - groene daken - groene gevels
    Greenery in our living environment benefits more than just our health and well-being. It also facilitates water management and promotes biodiversity in built-up areas, and can help reduce the effects of noise pollution. Greenery also helps to raise the property value of homes and offices. This document provides general information on the benefits of greenery, and complements the detailed fact sheets on how greenery can improve health and well-being in Residential, Professional, Educational and Healthcare contexts.
    Uitdagingen van de stad 21e eeuw
    Spijker, J.H. - \ 2018
    urban planning - urban areas - mobility - greening - health - water - heat resistance - trees - climatic change - water holding capacity - biodiversity - stress - population education
    TEEB & i-Tree models : Input for Aeres minor Growing Green Cities
    Hiemstra, J.A. ; Kuik, A.J. van - \ 2018
    Wageningen : Wageningen University & Research - 40 p.
    urban areas - trees - ecology - biodiversity - air quality - water storage - ecosystems - health - urban planning
    Groen in de stad: soortentabel
    Hiemstra, J.A. - \ 2018
    Wageningen University & Research - 2 p.
    greening - urban areas - climate - air quality - water harvesting - projects - biodiversity - trees - plantations
    Groen in de stad : Klimaat en temperatuur
    Hiemstra, J.A. - \ 2018
    Wageningen University & Research - 6 p.
    climate - plantations - greening - trees - temperature - air quality - environment - water harvesting - biodiversity
    Ecosysteemdiensten van bomen en groen in de stad
    Hiemstra, J.A. - \ 2017
    Wageningen : Groen Kennisnet
    bomen - planten - biodiversiteit - ecosystemen - klimaat - luchtkwaliteit - regenwateropvang - stedelijke gebieden - trees - plants - biodiversity - ecosystems - climate - air quality - water harvesting - urban areas
    Groen kost geld en de baten zijn slecht tastbaar. Het project 'Ecosysteemdiensten van boomkwekerijproducten' ontwikkelt instrumenten om de voordelen van groen beter te laten meewegen bij het nemen van beslissingen. Voordelen: verkoeling, luchtzuivering, waterberging en beleefbare biodiversiteit. In eerste instantie voor de productgroep bomen, later ook voor andere productgroepen.
    Greenery: more than beauty and health : A summary of the benefits of greenery on health, productivity, performance and well-being
    Hiemstra, J.A. ; Vries, S. de; Spijker, J.H. - \ 2017
    Wageningen : Wageningen University & Research - 6
    health - well-being - plants - trees - reconditioning - air quality - biodiversity - air conditioning - learning - labour - green roofs - green walls - gezondheid - welzijn - planten - bomen - herstellen - luchtkwaliteit - biodiversiteit - klimaatregeling - leren - arbeid (werk) - groene daken - groene gevels
    Greenery in our living environment is beneficial for more than just our health and well-being. It facilitates water management and stimulates biodiversity in built-up areas, and it can also reduce the effects of noise pollution. Greenery also has a positive impact on the property value of homes and offices. This document provides general information on the benefits of greenery, supplementary to the detailed fact sheets on how greenery can improve health and well-being in Residential, Professional, Educational and Healthcare contexts.
    Forest-grassland transitions : How livestock and fire shape grassy biomes
    Bernardi, Rafael E. - \ 2017
    Wageningen University. Promotor(en): M. Scheffer, co-promotor(en): M. Holmgren; Matías Arim. - Wageningen : Wageningen University - ISBN 9789463436212 - 129
    forests - grasslands - fire - cattle - livestock - subtropics - south america - trees - bossen - graslanden - brand - rundvee - vee - subtropen - zuid-amerika - bomen

    Plant associations are determined by complex interactions with their environment depending on resource availability, landscape features, and periodic disturbances that shape the structure and functions of these communities. Forests, savannas and grasslands extend across the global land surface, contribute to planetary processes and provide ecosystems services sustaining local production. However, the factors that explain the distribution of trees and determine these biomes are still not well understood. In this thesis, long-standing questions about the origins and distribution of these ecosystems are discussed in light of new evidence suggesting that a feedback of fire and grasses may maintain forests, savannas and grasslands as alternative tree cover states. I also address how anthropogenic land use, including the introduction of livestock, may be affecting these dynamics, particularly in the neotropics, with consequences in terms of potential transitions in tree cover regimes.

    I analyze the distribution of trees in the grasslands of subtropical South America, looking at what may determine current tree cover and change dynamics (Chapters 2 & 3). The results suggest that, in non-cultivated areas, the expansion of trees into grasslands is likely limited by fire, livestock and precipitation, and that livestock likely reduces fire frequency (Chapter 2). The analyses also suggest that in the Uruguayan Campos of southeastern South America, where fire frequency is low and livestock densities are high, a release in livestock density may cause a moderate expansion of forests into grasslands (Chapter 3). To understand the consequences of a potential transition to higher tree cover by increasing precipitation, I looked at the effects of tree cover in subtropical rangelands (Chapter 5). The results indicated that isolated trees can improve the forage quality and abundance of these rangelands, with potential benefits in terms of biodiversity and ecosystem services. Lastly, I analyzed correlational patterns relating livestock density to vegetation structure across the global tropics and subtropics (Chapter 4), in an attempt to generalize the findings of Chapter 2. The results indicate that extensive livestock systems reduce fire frequency and impact vegetation structure, maintaining savannas and grasslands with low tree cover, low fire frequency and a higher presence of shrubs and dwarf trees.

    Bomen aan der einder : Onze bomen en bossen door de eeuwen heen (herziene versie)
    Pistorius, R. ; Vries, S.M.G. de - \ 2017
    Wageningen : Wageningen UR
    bomen - soortendiversiteit - historische ecologie - genetische bronnen van plantensoorten - trees - species diversity - historical ecology - plant genetic resources
    Pas in de laatste decennia hebben bossen hun voornaamste functie, houtproductie, verloren. Ons huidige, relatief weinig diverse, bosbestand getuigt nog van die verloren functie. Reden te meer het behoud van de biodiversiteit van onze bossen aandacht te geven. Deze brochure belicht ons nationaal bosbeheer door de eeuwen heen en staat stil bij de huidige bewaring van genetisch materiaal van autochtone bomen.
    Veenvrij substraat : Verkenning van de mogelijkheden van veenvrij substraat in de teelt van laanbomen (opzetters)
    Sluis, B.J. van der; Reuler, H. van - \ 2016
    Randwijk : Wageningen Plant Research, Bloembollen, Boomkwekerij & Fruit (Rapport 2016-09) - 21
    substraten - kweekmedia - bomen - turf - potcultuur - cultuurmethoden - containerplanten - substrates - culture media - trees - peat - pot culture - cultural methods - container grown plants
    Verkenning sensing laanboomkwekerij : toepassing van de bodemscan in de laanboomkwekerij
    Baltissen, A.H.M.C. ; Sluis, B.J. van der - \ 2016
    Randwijk : Praktijkonderzoek Plant & Omgeving BBF - 17
    aftasten - remote sensing - sensors - bos- en haagplantsoen - bomen - sensing - remote sensing - sensors - woody nursery stock - trees
    De doelstelling van dit project is het verkennen van de mogelijkheden van nieuwe sensing technieken in de laanboomkwekerij. Gekozen is voor het uitvoeren van een sensing van de bodem. De bodem is de basis van de teelt. Het verkrijgen van inzicht in de variatie van de bodem kan helpen om teeltmaatregelen af te stemmen op die variatie. Dit rapport beschrijft een eerste verkenning naar de mogelijkheden van Proximal Soil Sensing en heeft als doel het vaststellen van de variatie van de bodem met een specifieke bodemsensor (EM38-mk2) en onderzoeken wat deze variatie betekent voor de laanboomteelt.
    Examining growth, yield and bean quality of Ethiopian coffee trees : towards optimizing resources and tree management
    Bote, Adugna - \ 2016
    Wageningen University. Promotor(en): Niels Anten, co-promotor(en): Jan Vos; F.L. Ocho. - Wageningen : Wageningen University - ISBN 9789462578319 - 138
    coffea - coffea arabica - trees - growth - yields - quality - radiation - nitrogen - agroecosystems - coffea - coffea arabica - bomen - groei - opbrengsten - kwaliteit - straling - stikstof - agro-ecosystemen

    Coffee (Coffeaarabica L.)bean production and quality are determined by a diversity of interacting factors (e.g. shade, nitrogen, crop traits). Bean yield increases with increase in radiation, but adequate fertilizer suppliesare needed to sustain the productivity. This thesis analysed coffee tree growth, bean production and bean quality in relation to different degrees of exposure to radiation and nitrogen supply. Growth of leaves and branches and properties of leaves such as specific leaf area, nitrogen content per unit leaf area and light-saturated rate of photosynthesis were determined. Radiation interception and nitrogen uptake were also determined as were radiation use efficiency and apparent nitrogen recovery. Tree biomass and coffee bean yield responded positively to both radiation and nitrogen supply. Abundant bean yield to the detriment of vegetative growth, however, resultedin biennial bearing in coffee trees. Effects of fruit load on coffee treegrowth and productivity were studied for two consecutive years and the resultshowed that competition between fruit growth and vegetative growth predisposed the trees for biennial bearing. Reduced vegetative growth when fruit load is high reduces the number of flower bearing nodes and hence yields in the next season. Coffee quality is a sum of favourable characteristics that satisfies requirements of different actors in the coffee chain and is the factor determining the price on the coffee market. This study has also examined coffee quality attributes in relation to radiation and nitrogen, fruit load manipulation, and genotype by environment (different altitudes) interactions. The result indicated that factors and conditions that support non-limiting supply of resources for bean to grow and a sufficient long period of maturation promote coffee bean quality. Overall, the study gained further understanding of coffee tree growth, yield and bean quality responses to aforementioned factors and explored traits that underlie the patterns. Further works are required to use the traits and describe the behaviour of coffee trees in different agro-ecosystems.

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