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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Spatial heterogeneity of plant–soil feedback affects root interactions and interspecific competition
Hendriks, M. ; Ravenek, J. ; Smit-Tiekstra, A.E. ; Paauw, J.W.M. van der; Caluwe, H. de; Putten, W.H. van der; Kroon, H. de; Mommer, L. - \ 2015
New Phytologist 207 (2015)3. - ISSN 0028-646X - p. 830 - 840.
nutrient heterogeneity - species-diversity - population-dynamics - relative abundance - deciduous woodland - temporal variation - borne pathogens - grassland - community - coexistence
Plant-soil feedback is receiving increasing interest as a factor influencing plant competition and species coexistence in grasslands. However, we do not know how spatial distribution of plant-soil feedback affects plant below-ground interactions. We investigated the way in which spatial heterogeneity of soil biota affects competitive interactions in grassland plant species. We performed a pairwise competition experiment combined with heterogeneous distribution of soil biota using four grassland plant species and their soil biota. Patches were applied as quadrants of 'own' and 'foreign' soils from all plant species in all pairwise combinations. To evaluate interspecific root responses, species-specific root biomass was quantified using real-time PCR. All plant species suffered negative soil feedback, but strength was species-specific, reflected by a decrease in root growth in own compared with foreign soil. Reduction in root growth in own patches by the superior plant competitor provided opportunities for inferior competitors to increase root biomass in these patches. These patterns did not cascade into above-ground effects during our experiment. We show that root distributions can be determined by spatial heterogeneity of soil biota, affecting plant below-ground competitive interactions. Thus, spatial heterogeneity of soil biota may contribute to plant species coexistence in species-rich grasslands.
Root responses of grassland species to spatial heterogeneity of plant–soil feedback
Hendriks, M. ; Visser, E.J.W. ; Visschers, I.S.G. ; Aarts, B.H.J. ; Caluwe, H. de; Smit-Tiekstra, A.E. ; Putten, W.H. van der; Kroon, H. de; Mommer, L. - \ 2015
Functional Ecology 29 (2015)2. - ISSN 0269-8463 - p. 177 - 186.
nutrient heterogeneity - temporal variation - individual plants - community - growth - plasticity - diversity - availability - succession - microbes
Plant roots selectively forage for soil nutrients when these are heterogeneously distributed. In turn, effects of plant roots on biotic and abiotic conditions in the soil, which result in so-called plant–soil feedback can be heterogeneously distributed as well, but it is unknown how this heterogeneity affects root distribution, nutrient uptake and plant biomass production. Here, we investigate plant root distribution patterns as influenced by spatial heterogeneity of plant–soil feedback in soil and quantify consequences for plant nitrogen uptake and biomass production. We conditioned soils by four grassland plant species to obtain ‘own’ and ‘foreign’ soils that differed in biotic conditions similar as is done by the first phase of plant–soil feedback experiments. We used these conditioned soils to create heterogeneous (one patch of own and three patches of foreign soils) or homogeneous substrates where own and foreign soils were mixed. We also included sterilized soil to study the effect of excluding soil biota, such as pathogens, symbionts and decomposers. We supplied 15N as tracer to measure nutrient uptake. In nonsterile conditions, most plant species produced more biomass in heterogeneous than in homogeneous soil. Root biomass and 15N uptake rates were higher in foreign than own soil patches. These differences between heterogeneous and homogeneous soil disappeared when soil was sterilized, suggesting that the effects in nonsterilized soils were due to species-specific soil biota that had responded to soil conditioning. We conclude that plants produce more biomass when own and foreign soils are patchily distributed than when mixed. We show that this enhanced productivity is due to nutrient uptake being overall most efficient when own and foreign soils are spatially separated. We propose that spatial heterogeneity of negative plant–soil feedback in species diverse plant communities may provide a better explanation of overyielding than assuming that plant–soil feedback effects are diluted.
BioScore 2.0. Tussenrapportage WOT-04-011-036.50
Hinsberg, A. van; Hendriks, M. ; Hennekens, S.M. ; Sierdsema, H. ; Swaay, C. van; Rondinini, C. ; Santini, L. ; Delbaere, B. ; Knol, O.M. ; Wiertz, J. - \ 2014
Wageningen : Wettelijke Onderzoekstaken Natuur en Milieu (WOt-interne notitie 87)
Independent variations of plant and soil mixtures reveal soil feedback effects on plant community overyielding
Hendriks, M. ; Mommer, L. ; Caluwe, H. de; Smit-Tiekstra, A.E. ; Putten, W.H. van der; Kroon, H. de - \ 2013
Journal of Ecology 101 (2013)2. - ISSN 0022-0477 - p. 287 - 297.
diversity-productivity relationships - grassland experiment - species coexistence - biodiversity - rhizosphere - competition - mechanisms - succession - dynamics
1. Recent studies have shown that the positive relationship between plant diversity and plant biomass ('overyielding') can be explained by soil pathogens depressing productivity more in low than in high diverse plant communities. However, tests of such soil effects in field studies were constrained by experimental limitations to manipulate soil community composition independent of plant community composition. Here, we report of an experiment where feedback effects to plants were tested for both plant and soil monocultures and mixtures. 2. Our results demonstrate that overyielding is the result of plant species in mixture being more growth-limited by 'own' soil biota than by soil biota of other plant species. This effect disappeared when the soils had been sterilized by gamma-irradiation. Mixing plants themselves did not result in overyielding except when grown in the soil of one of the species (Leucanthemum vulgare), where growth of one species disproportionally increased in mixture compared to monoculture. 3. Soil nutrient availability could not explain differences in growth between the non-sterilized soils. Therefore, our results suggest that plant species-specific soil biota rather than the plants have contributed to the plant community overyielding. 4. Species biomass ranking in mixtures highly differed between non-sterilized soils of different histories of soil conditioning, whilst the ranking was more consistent in sterilized soil. Sterilized soils of different origin differed significantly in nutrient availability. These results suggest that shifts in competitive hierarchies depend on plant species-specific interactions influenced by soil biota and cannot be induced by mineral nitrogen. 5. Synthesis. Our results show that overyielding in four plant species mixtures can be due to species-specific interactions between plants and their specific soil biota. Neither mixing the plant species alone nor the differential responses of species to mineral nitrogen influenced community productivity, but mixing soil biota did.
The dual role of plant-associated fungi in the biodiversity-productivity relationship
Mommer, L. ; cotton, A.T.E. ; Dumbrell, A.J. ; Hendriks, M. ; Mortel, J.E. van de; Kroon, H. de; Berendse, F. ; Raaijmakers, J.M. - \ 2012
Root responses to nutrients and soil biota: drivers of species coexistence and ecosystem productivity
Kroon, H. de; Hendriks, M. ; Ruijven, J. van; Ravenek, J. ; Padilla, F.M. ; Jongejans, E. ; Visser, E.J.W. ; Mommer, L. - \ 2012
Journal of Ecology 100 (2012)1. - ISSN 0022-0477 - p. 6 - 15.
plant diversity - competitive hierarchies - interspecific competition - biodiversity experiments - functional composition - grassland communities - phenotypic plasticity - niche differentiation - terrestrial biomes - perennial grasses
Summary 1. Although a major part of plant biomass is underground, we know little about the contribution of different species to root biomass in multispecies communities. We summarize studies on root dis- tributions and plant responses to species-specific soil biota and formulate three hypotheses to explain how root responses may drive species coexistence and ecosystem productivity. 2. Recent studies suggest that root growth of some species may be stimulated in species mixtures compared with monocultures without hampering the growth of other species, leading to below- ground overyielding. Further studies suggest that these responses are the result of reduced impair- ment of growth by species-specific plant pathogens that accumulate in monocultures. 3. First, we hypothesize that due to pathogen-constrained growth, monocultures are ‘under- rooted’, i.e. they do not have enough roots for optimal acquisition of nutrients. Although elevated root production in mixtures represents a cost to the plant, improved nutrition will eventually result in improved plant performance. 4. Second, due to the plant species specificity of the soil biotic communities, we suggest that plant species in mixtures develop an intransitive competitive network in which none of the species is competitively superior to all other species. Competitive intransitivity is proposed as a mechanismof species coexistence. 5. As a final hypothesis, we suggest that pathogen-mediated root overproduction in species mix- tures determines the patterns of community productivity and overyielding, both directly, by improving plant performance, and indirectly, by releasing more carbon into the soil, resulting in enhanced availability of nutrients. 6. Synthesis. Recent evidence suggests that species coexistence and ecosystem productivity may be the result of an interplay between pathogen-driven plant responses and nutritional consequences. We suggest that responses of the roots are an important yet mostly overlooked intermediary between soil biota and plant community responses to biodiversity. Key-words: biodiversity, ecosystem functioning, intransitive competition, niche differentia- tion, plant–soil (below-ground) interactions, root distributions, root ecology, soil nutrient availability, transgressiveoveryielding
Van boerenkar tot PC Hoofttractor : over veranderd gebruik van plattelandswegen
Jaarsma, C.F. ; Wildervanck, C. ; Hendriks, M. ; Beunen, R. - \ 2011
Wageningen : Wageningen UR, Leerstoelgroep Landgebruiksplanning (Nota / Vakgroep Ruimtelijke Planvorming 112) - ISBN 9789461730664 - 120
plattelandswegen - verkeer - geschiedenis - ruimtelijke ordening - nederland - rural roads - traffic - history - physical planning - netherlands
Seminar t.g.v. pensionering universitair hoofdocent Rinus Jaarsma
Echo "Sterke onderzoeksbasis nodig" Interview met A. van den Brink
Hendriks, M. ; Brink, A. van den - \ 2010
Blauwe Kamer 2010 (2010)5. - ISSN 1389-742X - p. 2 - 2.
Ontwerpers staan gewoon niet stil bij zon en wind (Interview met S. Lenzholzer)
Hendriks, M. ; Lenzholzer, S. - \ 2010
Blauwe Kamer 19 (2010)3. - ISSN 1389-742X - p. 12 - 13.
Het ontstaan van het Nederlandse landschap. Een canon in 12 thema's en 50 vensters
Berg, M. van den; Beukenkamp, P. ; Brombacher, A. ; Burger, J.E. ; Dam, L. van; Dijkmans, J. ; Doorn, J. van; Erkens, G. ; Gans, W. de; Graaff, E. van der; Hendriks, M. ; Hijma, M. ; Hoek, W. ; Hoekstra, P. ; Kleijn, N. ; Klijn, J.A. ; Koomen, A.J.M. ; Lam, A. ; Meijering, J. ; Mourik, J. van; Oost, A. ; Peek, G.J.W.C. ; Rozemeijer, J. ; Sonneveld, M.P.W. ; Schouten, C. ; Visscher, H. - \ 2008
[S.l.] : Werkgroep Canon - Geoheritage NL en Buro voor Explanation Design - ISBN 9789074980203
landschap - landschapsecologie - geschiedenis - nederland - cultuurlandschap - natuurlandschap - landscape - landscape ecology - history - netherlands - cultural landscape - natural landscape
De Canon van het Landschap vertelt over de ontstaansgeschiedenis van de Nederlandse landschappen (brede rivieren, meren, waterrijke veenpolders, blinkende duinen, stuwwallen, uitgestrekte wadden enz.).
Hendriks, M. ; Knüvener, T. ; Rekittke, J. - \ 2008
In: Greetings from Europe; Landscape and Leisure / Sijmons, D., Hazendonk, N., Venema, H., Rotterdam : 010 publishers - ISBN 9789064506505 - p. 151 - 160.
Syringeal muscles fit the trill in ring doves (Streptopelia risoria L.)
Elemans, C.P.H. ; Spierts, I.L.Y. ; Hendriks, M. ; Schipper, H. ; Müller, U.K. ; Leeuwen, J.L. van - \ 2006
Journal of Experimental Biology 209 (2006)5. - ISSN 0022-0949 - p. 965 - 977.
mechanical power output - sound-producing muscles - bird song - zebra finch - nonlinear dynamics - generation - songbirds - brain - motor - vocalizations
In contrast to human phonation, the virtuoso vocalizations of most birds are modulated at the level of the sound generator, the syrinx. We address the hypothesis that syringeal muscles are physiologically capable of controlling the sound-generating syringeal membranes in the ring dove (Streptopelia risoria) syrinx. We establish the role of the tracheolateralis muscle and propose a new function for the sternotrachealis muscle. The tracheolateralis and sternotrachealis muscles have an antagonistic mechanical effect on the syringeal aperture. Here, we show that both syringeal muscles can dynamically control the full syringeal aperture. The tracheolateralis muscle is thought to directly alter position and tension of the vibrating syringeal membranes that determine the gating and the frequency of sound elements. Our measurements of the muscle's contractile properties, combined with existing electromyographic and endoscopic evidence, establish its modulating role during the dove's trill. The muscle delivers the highest power output at cycle frequencies that closely match the repetition rates of the fastest sound elements in the coo. We show that the two syringeal muscles share nearly identical contraction characteristics, and that sternotrachealis activity does not clearly modulate during the rapid trill. We propose that the sternotrachealis muscle acts as a damper that stabilizes longitudinal movements of the sound-generating system induced by tracheolateralis muscle contraction. The extreme performance of both syringeal muscles implies that they play an important role in fine-tuning membrane position and tension, which determines the quality of the sound for a conspecific mate
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