Branding/Logomark minus Citation Combined Shape Icon/Bookmark-empty Icon/Copy Icon/Collection Icon/Close Copy 7 no author result Created with Sketch. Icon/Back Created with Sketch. Match!

Tree diversity has contrasting effects on predation rates by birds and arthropods on three broadleaved, subtropical tree species

Published on Jan 1, 2018in Ecological Research 1.55
· DOI :10.1007/s11284-017-1531-7
Bo Yang7
Estimated H-index: 7
(MLU: Martin Luther University of Halle-Wittenberg),
Bin Li1
Estimated H-index: 1
+ 3 AuthorsAndreas Schuldt17
Estimated H-index: 17
(MLU: Martin Luther University of Halle-Wittenberg)
Cite
Abstract
Plant diversity is hypothesized to strengthen biological control by promoting top-down pressure of predators on herbivores. However, studies on the effects of plant diversity on actual predation rates are still scarce, particularly in forest ecosystems. We analyzed the effect of tree species richness, and the potential influence of neighbor tree density, on predation rates of arthropods and birds on artificial clay caterpillars in a large-scale forest biodiversity experiment in south-east China. Our study was focused on three broadleaved tree species that are frequently damaged by lepidopteran caterpillars. Predation rates were influenced by tree species richness on only one of the three tree species, on which arthropod predation increased and bird predation decreased with increasing tree species richness. Importantly, these relationships were mediated by neighbor tree density, being most pronounced when focal trees had fewer surrounding neighbor trees. Our findings indicate that low tree density reduced arthropod predator abundances and predation rates, but that negative effects of this reduction were compensated for in more diverse tree mixtures by a functionally more diverse predator community. In contrast, lower tree densities might have benefited insectivorous birds by making trees more accessible particularly in monocultures, which are often structurally more uniform and denser than tree mixtures. Overall, our results point to an important role of species-specific and density-dependent mechanisms in modifying the consequences of biodiversity loss on top-down effects in forest ecosystems. Future work should aim at separating the effects of different predator guilds and those of host diversity from host density.
  • References (49)
  • Citations (2)
Cite
References49
Newest
Published on Dec 1, 2017in Scientific Reports 4.01
Andreas Schuldt17
Estimated H-index: 17
(MLU: Martin Luther University of Halle-Wittenberg),
Helge Bruelheide38
Estimated H-index: 38
(MLU: Martin Luther University of Halle-Wittenberg)
+ 9 AuthorsChristian Wirth47
Estimated H-index: 47
(Leipzig University)
Ecosystem functioning and human well-being critically depend on numerous species interactions above- and belowground. However, unraveling the structure of multitrophic interaction webs at the ecosystem level is challenging for biodiverse ecosystems. Attempts to identify major relationships between trophic levels usually rely on simplified proxies, such as species diversity. Here, we propose to consider the full information on species composition across trophic levels, using Procrustes correlatio...
Published on Sep 1, 2017in Ecology and Evolution 2.42
Andreas Schuldt17
Estimated H-index: 17
(MLU: Martin Luther University of Halle-Wittenberg),
Lydia Hönig4
Estimated H-index: 4
(MLU: Martin Luther University of Halle-Wittenberg)
+ 5 AuthorsHelge Bruelheide38
Estimated H-index: 38
(MLU: Martin Luther University of Halle-Wittenberg)
Herbivores and fungal pathogens are key drivers of plant community composition and functioning. The effects of herbivores and pathogens are mediated by the diversity and functional characteristics of their host plants. However, the combined effects of herbivory and pathogen damage, and their consequences for plant performance, have not yet been addressed in the context of biodiversity–ecosystem functioning research. We analyzed the relationships between herbivory, fungal pathogen damage and thei...
Published on Aug 1, 2017in Insect Science 2.71
Gábor L. Lövei28
Estimated H-index: 28
(AU: Aarhus University),
Marco Ferrante5
Estimated H-index: 5
(AU: Aarhus University)
Sentinel prey can provide a direct, quantitative measure of predation under field conditions. Live sentinel prey provides more realistic data but rarely allows the partitioning of the total predation pressure; artificial prey is less natural but traces left by different predators are identifiable, making it suitable for comparative studies. We reviewed the available evidence of the use of both types of invertebrate sentinel prey. Fifty-seven papers used real prey, usually measuring predation on ...
Published on Jul 1, 2017in Oikos 3.47
Bruno Leles1
Estimated H-index: 1
(XTBG: Xishuangbanna Tropical Botanical Garden),
Xue Xiao1
Estimated H-index: 1
(XTBG: Xishuangbanna Tropical Botanical Garden)
+ 2 AuthorsKyle W. Tomlinson11
Estimated H-index: 11
(XTBG: Xishuangbanna Tropical Botanical Garden)
Higher trophic level interactions are key mediators of ecosystem functioning in tropical forests. A rich body of theory has been developed to predict the effects of plant diversity on communities at higher trophic levels and the mechanisms underlying such effects. The 'enemies hypothesis’ states that predators exert more effective top–down control of herbivorous insects with increasing plant diversity. Support for this hypothesis has been found in temperate forests and agroecosystems, but remain...
Published on May 19, 2017in Science 41.04
Tomas Roslin32
Estimated H-index: 32
(UH: University of Helsinki),
Bess Hardwick6
Estimated H-index: 6
(UH: University of Helsinki)
+ 37 AuthorsTimothy C. Bonebrake15
Estimated H-index: 15
(HKU: University of Hong Kong)
Biotic interactions underlie ecosystem structure and function, but predicting interaction outcomes is difficult. We tested the hypothesis that biotic interaction strength increases toward the equator, using a global experiment with model caterpillars to measure predation risk. Across an 11,660-kilometer latitudinal gradient spanning six continents, we found increasing predation toward the equator, with a parallel pattern of increasing predation toward lower elevations. Patterns across both latit...
Published on Apr 1, 2017in Journal of Applied Ecology 5.78
Luc Barbaro19
Estimated H-index: 19
(INRA: Institut national de la recherche agronomique),
Adrien Rusch15
Estimated H-index: 15
(INRA: Institut national de la recherche agronomique)
+ 3 AuthorsBastien Castagneyrol18
Estimated H-index: 18
(INRA: Institut national de la recherche agronomique)
Insectivorous birds are increasingly recognized for the crucial pest control services they provide to agroecosystems. While both the foraging activity and functional diversity of birds are enhanced by multiscale habitat heterogeneity, little is known about how these relationships may influence avian top‐down control of insects. Specifically, interactive effects of bird community structure and habitat heterogeneity on pest control across spatial scales have rarely been explored. We sampled bird c...
Published on Feb 1, 2017in Oecologia 2.92
Jiayong Zhang5
Estimated H-index: 5
(ZJNU: Zhejiang Normal University),
Helge Bruelheide38
Estimated H-index: 38
(MLU: Martin Luther University of Halle-Wittenberg)
+ 5 AuthorsAndreas Schuldt17
Estimated H-index: 17
(MLU: Martin Luther University of Halle-Wittenberg)
Stand diversification is considered a promising management approach to increasing the multifunctionality and ecological stability of forests. However, how tree diversity affects higher trophic levels and their role in regulating forest functioning is not well explored particularly for (sub)tropical regions. We analyzed the effects of tree species richness, community composition, and functional diversity on the abundance, species richness, and beta diversity of important functional groups of herb...
Published on May 1, 2016in Methods in Ecology and Evolution 7.10
Jonathan S. Lefcheck15
Estimated H-index: 15
(W&M: College of William & Mary)
Summary Ecologists and evolutionary biologists rely on an increasingly sophisticated set of statistical tools to describe complex natural systems. One such tool that has gained significant traction in the biological sciences is structural equation models (SEM), a form of path analysis that resolves complex multivariate relationships among a suite of interrelated variables. Evaluation of SEMs has historically relied on covariances among variables, rather than the values of the data points themsel...
Published on Mar 1, 2016in Biotropica 2.99
Angela T. Moles38
Estimated H-index: 38
(UNSW: University of New South Wales),
Jeff Ollerton34
Estimated H-index: 34
(University of Northampton)
Published on Mar 1, 2016in Oecologia 2.92
Evalyne W. Muiruri4
Estimated H-index: 4
(RHUL: Royal Holloway, University of London),
Kalle Rainio15
Estimated H-index: 15
(UTU: University of Turku),
Julia Koricheva50
Estimated H-index: 50
(RHUL: Royal Holloway, University of London)
The enemies hypothesis states that reduced insect herbivory in mixed-species stands can be attributed to more effective top–down control by predators with increasing plant diversity. Although evidence for this mechanism exists for invertebrate predators, studies on avian predation are comparatively rare and have not explicitly tested the effects of diversity at different spatial scales, even though heterogeneity at macro- and micro-scales can influence bird foraging selection. We studied bird pr...
Cited By2
Newest
Published on Jun 1, 2019in Forest Ecology and Management 3.13
Daan Dekeukeleire3
Estimated H-index: 3
(UGent: Ghent University),
Irene M. van Schrojenstein Lantman2
Estimated H-index: 2
(UGent: Ghent University)
+ 7 AuthorsLuc Lens38
Estimated H-index: 38
(UGent: Ghent University)
Abstract To better understand natural regeneration of trees and forest dynamics it is important to gain insight into the drivers of invertebrate herbivory. In mature forests, associational resistance of trees resulting from a high diversity of neighbouring trees is common, and can have cascading effects on tree growth through resource concentration effects or through changes in top-down control. While the underlying biological processes are known to be influenced by the forest’s spatial properti...
Published on Nov 7, 2018
Colleen S. Nell4
Estimated H-index: 4
(UCI: University of California, Irvine),
Luis Abdala-Roberts16
Estimated H-index: 16
(UADY: Universidad Autónoma de Yucatán)
+ 1 AuthorsKailen A. Mooney25
Estimated H-index: 25
(UCI: University of California, Irvine)
Biodiversity affects the structure of ecological communities, but little is known about the interactive effects of diversity across multiple trophic levels. We used a large-scale forest diversity experiment to investigate the effects of tropical tree species richness on insectivorous birds, and the subsequent indirect effect on predation rates by birds. Diverse plots (four tree species) had higher bird abundance (61%), phylogenetic diversity (61%), and functional diversity (55%) than predicted b...