13 Works

Non-negligible contribution of subordinates in community-level litter decomposition: deciduous trees in an evergreen world

Chao Guo, J. Hans C. Cornelissen, Bin Tuo, Hang Ci & En-Rong Yan
1. Subordinates have relatively low abundance compared to dominants, but they may contribute substantially to functional diversity and ecosystem functions, especially if they differ strongly from the dominants in key traits. Here we investigated whether this phenomenon can be applied to litter decomposition as a key carbon and nutrient cycling process. 2. We hypothesized that species’ litter mass-weighted predictions of community-level litter decomposition based on the rates of dominants only would deviate strongly from observed...

Data from: Cognitive reserve and clinical progression in Alzheimer’s disease: a paradoxical relationship

Anna C. Van Loenhoud, Wiesje M. Van Der Flier, Alle M. Wink, Ellen Dicks, Colin Groot, Jos Twisk, Frederik Barkhof, Philip Scheltens & Rik Ossenkoppele
Objective: To investigate the relationship between cognitive reserve (CR) and clinical progression across the Alzheimer’s disease (AD) spectrum. Methods: We selected 839 Aβ-positive subjects with normal cognition (NC, n=175), mild cognitive impairment (MCI, n=437) or AD dementia (n=227) from the Alzheimer’s Disease Neuroimaging Initiative. CR was quantified using standardized residuals (W-scores) from a (covariate-adjusted) linear regression with global cognition (ADAS-Cog 13) as an independent variable-of-interest, and either gray matter volumes or white matter hyperintensity volume...

Environmental and morphological constraints interact to drive the evolution of communication signals in frogs

Matías Muñoz, Sandra Goutte, Jacintha Ellers & Wouter Halfwerk
Animals show a rich diversity of signals and displays. Among the many selective forces driving the evolution of communication between individuals, one widely recognized factor is the structure of the environment in which signals are produced, transmitted and received. In particular, animals communicating by sounds often emit acoustic signals from specific locations, such as high up in the air, from the ground or in the water. The properties of these different display sites will impose...

Multiple abiotic and biotic drivers of long-term wood decomposition within and among species in semiarid inland dunes: a dual role for stem diameter

Enkhmaa Erdenebileg, Wang Congwen, Xuehua Ye, Qingguo Cui, Juan Du, Zhenying Huang, Guofang Liu & Johannes H. C. Cornelissen
This is wood decomposition data conducted in an semiarid inland dune including mass loss, initial wood traits and k values of combinations between five diameter classes and four shrub species under different treatments including UV and litter position. We found that after 34 months of in situ incubation, the mass loss of buried woody litters was three times faster than those of suspended and surface woody litters (53.5 ± 2.7 %, 17.0 ± 1.0 %...

Data from: Tetranychus evansi spider mite populations suppress tomato defences to varying degrees

Bram Knegt, Tomas Meijer, Merijn Kant, E. Toby Kiers & Martijn Egas
Plant defence suppression is an offensive strategy of herbivores, in which they manipulate plant physiological processes to increase their performance. Paradoxically, defence suppression does not always benefit the defence-suppressing herbivores, because lowered plant defences can also enhance the performance of competing herbivores and can expose herbivores to increased predation. Suppression of plant defence may therefore entail considerable ecological costs depending on the presence of competitors and natural enemies in a community. Hence, we hypothesize that...

Anthropogenic noise impairs foraging for cryptic prey via cross-sensory interference

Wouter Halfwerk & Kees Van Oers
Anthropogenic noise levels are globally rising with profound impacts on ecosystems and the species that live in them. Masking or distraction by noise can interfere with relevant sounds and thereby impact ecological interactions between individuals of the same or different species. Predator-prey dynamics are particularly likely to be influenced by rising noise levels, with important population- and community-level consequences, as species may differentially adapt to noise disturbance. Acoustic noise can, however, also impair the use...

ATN-classification and clinical progression in subjective cognitive decline: the SCIENCe project

Jarith Ebenau
Objective: To investigate the relationship between the ATN-model and risk of dementia and cognitive decline in individuals with subjective cognitive decline (SCD). Methods: We classified 693 participants with SCD (60±9yr, 41%F, MMSE 28±2) from the Amsterdam Dementia Cohort and SCIENCe project according to the ATN-model, as determined by amyloid PET or CSF Abeta (A), CSF p-tau (T) and MRI-based medial temporal lobe atrophy (N). All underwent extensive neuropsychological assessment. For 342 participants follow-up was available...

Association of leaf silicon content with chronic wind exposure across and within herbaceous plant species

Yao-Bin Song, Yu-Kun Hu, Xu Pan, Guo-Fang Liu, Ming Dong & Johannes H. C. Cornelissen
Aim: High foliar silicon (henceforth Si) concentration protects plant tissues against herbivory but protection against several abiotic stressors has been proposed too, though the adaptive significance of these functions is still being debated. We aimed to explore the potential relationships between foliar Si content and chronic wind exposure across a large scale and multiple species, and analyze an overlooked alternative or complementary function of silicon in leaves: mechanical protection against wind. Location: Mainland China. Time...

Data from: Decomposition of leaf litter mixtures across biomes: The role of litter identity, diversity and soil fauna

Shixing Zhou, Olaf Butenschoen, Sandra Barantal, I. Tanya Handa, Marika Makkonen, Veronique Vos, Rien Aerts, Matty P. Berg, Brendan McKie, Jasper Van Ruijven, Stephan Hättenschwiler & Stefan Scheu
1. At broad spatial scales, the factors regulating litter decomposition remain ambiguous, with the understanding of these factors largely based on studies investigating site-specific single litter species, whereas studies using multi litter species mixtures across sites are rare. 2. We exposed in microcosms containing single species and all possible mixtures of four leaf litter species differing widely in initial chemical and physical characteristics from a temperate forest to the climatic conditions of four different forests...

Data from: Divergence of seminal fluid gene expression and function among natural snail populations

Yumi Nakadera, Alice Smith, Léa Daupagne, Marie-Agnès Coutellec, Joris Koene & Steven Ramm
Seminal fluid proteins (SFPs) can trigger drastic changes in mating partners, mediating post-mating sexual selection and associated sexual conflict. Also, cross-species comparisons have demonstrated that SFPs evolve rapidly and hint that post-mating sexual selection drives their rapid evolution. In principle, this pattern should be detectable within species as rapid among-population divergence in SFP expression and function. However, given the multiple other factors that could vary among populations, isolating divergence in SFP-mediated effects is not straightforward....

Methodology matters for comparing coarse wood and bark decay rates across tree species

Chenhui Chang, Richard S.P Van Logtestijn, Leo Goudzwaard, Jurgen Van Hal, Juan Zuo, Mariet Hefting, Shanshan Yang, Frank J. Sterck, Lourens Poorter, Johannes H. C. Cornelissen & Ute Sass-Klaassen
1. The importance of wood decay for the global carbon and nutrient cycles is widely recognized. However, relatively little is known about bark decay dynamics, even though bark represents up to 25% of stem dry mass. Moreover, bark presence versus absence can significantly alter wood decay rates. Therefore, it really matters for the fate of carbon whether variation in bark and wood decay rates is coordinated across tree species. 2. Answering this question requires advances...

Learning by Moving

Chris Visscher, Roel Bosker & Jaap Oosterlaan
The overall aim of the Learning by Moving study is to investigate the effects of two types of physical activity on cardiovascular fitness, gross motor skills, cognitive functions, academic achievement, brain structure, and brain functioning in 8-10-year-old typically developing children. Furthermore, relateions between the physical and cognitive domain will be investigated.

Allometry rather than abiotic drivers explains biomass allocation among leaves, stems and roots of Artemisia across a large environmental gradient in China

Rong Liu, Xuejun Yang, Ruiru Gao, Xinyu Hou, Liping Huo, Zhenying Huang & Hans Cornelissen
1. Biomass allocation patterns reflect the adaptive strategies of plants growing in different environments, which is a central issue in comparative plant ecology and evolution. However, the factors underpinning specific allocation patterns across organs and the existence of general rules governing allocation remain contentious. Optimal partitioning theory (OPT) states that plants can respond to resource availability by allocating relatively more biomass to the organ that captures the most limiting resources to optimize growth. In contrast,...

Registration Year

  • 2020
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Resource Types

  • Dataset
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Affiliations

  • VU University Amsterdam
    12
  • Chinese Academy of Sciences
    2
  • VU Amsterdam
    1
  • New York University Abu Dhabi
    1
  • Hangzhou Normal University
    1
  • Shaanxi Normal University
    1
  • Netherlands Institute of Ecology
    1
  • Amsterdam Neuroscience
    1
  • University of Göttingen
    1
  • Bielefeld University
    1