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Russell E. Naisbit
University of Fribourg
BiodiversityEcologyHeliconius cydnoBotanyBiology
27Publications
17H-index
1,606Citations
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Publications 27
Newest
#1Rudolf P. RohrH-Index: 21
#2Russell E. NaisbitH-Index: 17
Last. Louis-Félix BersierH-Index: 29
view all 4 authors...
2 CitationsSource
#1Nadine Sandau (University of Fribourg)H-Index: 5
#2Yvonne Fabian (University of Fribourg)H-Index: 5
Last. Louis-Félix Bersier (University of Fribourg)H-Index: 29
view all 8 authors...
How species diversity influences ecosystem functioning has been the subject of many experiments and remains a key question for ecology and conservation biology. However, the fact that diversity cannot be manipulated without affecting species composition makes this quest methodologically challenging. Here, we evaluate the relative importance of diversity and of composition on biomass production, by using partial Mantel tests for one variable while controlling for the other. We analyse two dataset...
4 CitationsSource
#1Rudolf P. Rohr (CSIC: Spanish National Research Council)H-Index: 21
#2Russell E. Naisbit (University of Fribourg)H-Index: 17
Last. Louis-Félix Bersier (University of Fribourg)H-Index: 29
view all 4 authors...
Networks play a prominent role in the study of complex systems of interacting entities in biology, sociology, and economics. Despite this diversity, we demonstrate here that a statistical model decomposing networks into matching and centrality components provides a comprehensive and unifying quantification of their architecture. The matching term quantifies the assortative structure in which node makes links with which other node, whereas the centrality term quantifies the number of links that n...
20 CitationsSource
#1Nadine Sandau (University of Fribourg)H-Index: 5
#2Rudolf P. Rohr (CSIC: Spanish National Research Council)H-Index: 21
Last. Louis-Félix Bersier (University of Fribourg)H-Index: 29
view all 8 authors...
BEF; Biodiversity; Composition; Ecosystem function; Ecosystem services;Mixed effects models; Residual correlation structure; Species richness
7 CitationsSource
#1Yvonne Fabian (University of Fribourg)H-Index: 5
#2Nadine Sandau (University of Fribourg)H-Index: 5
Last. Louis-Félix Bersier (University of Fribourg)H-Index: 29
view all 8 authors...
Declining plant species richness in agro-ecosystems and thus reduced habitat quality can have cascading effects on ecosystem functioning, leading to reduced pollination and biological control. Here we test if plant diversity can affect arthropod diversity and abundance on a very small scale, manipulating plant species richness (2, 6, 12 and 20 sown species) in small adjacent subplots (6 × 9 m) in 10 wildflower strips in an agricultural landscape. We simultaneously analyzed the effect of plant sp...
16 CitationsSource
#1Nadine SandauH-Index: 5
#2Rudolf P. RohrH-Index: 21
Last. Louis-Félix BersierH-Index: 29
view all 8 authors...
1 Citations
#1Yvonne Fabian (University of Fribourg)H-Index: 5
#2Nadine Sandau (University of Fribourg)H-Index: 5
Last. Louis-Félix Bersier (University of Fribourg)H-Index: 29
view all 8 authors...
Summary 1. Understanding the environmental factors that structure biodiversity and food webs among communities is central to assess and mitigate the impact of landscape changes. 2. Wildflower strips are ecological compensation areas established in farmland to increase pollination services and biological control of crop pests and to conserve insect diversity. They are arranged in networks in order to favour high species richness and abundance of the fauna. 3. We describe results from experimental...
45 CitationsSource
#1Richard M. Merrill (University of Cambridge)H-Index: 16
#2Russell E. Naisbit (University of Fribourg)H-Index: 17
Last. Chris D. Jiggins (University of Cambridge)H-Index: 67
view all 4 authors...
Shifts in host-plant use by phytophagous insects have played a central role in their diversification. Evolving host-use strategies will reflect a trade-off between selection pressures. The ecological niche of herbivorous insects is partitioned along several dimensions, and if populations remain in contact, recombination will break down associations between relevant loci. As such, genetic architecture can profoundly affect the coordinated divergence of traits and subsequently the ability to explo...
32 CitationsSource
#1Odile T. Bruggisser (University of Fribourg)H-Index: 7
#2Nadine Sandau (University of Fribourg)H-Index: 5
Last. Louis-Félix Bersier (University of Fribourg)H-Index: 29
view all 8 authors...
Abstract Species abundance in local communities is determined by bottom-up and top-down processes, which can act directly and indirectly on the focal species. Studies examining these effects simultaneously are rare. Here we explore the direct top-down and direct and indirect bottom-up forces regulating the abundance and predation success of an intermediate predator, the web-building spider Argiope bruennichi (Araneae: Araneidae). We manipulated plant diversity (2, 6, 12 or 20 sown species) in 9 ...
11 CitationsSource
#1Yvonne Fabian (University of Fribourg)H-Index: 5
#2Nadine Sandau (University of Fribourg)H-Index: 5
Last. Louis-Félix Bersier (University of Fribourg)H-Index: 29
view all 8 authors...
Wildflower strips are used to increase natural enemies of crop pests and to conserve insect diversity on farmland. Mollusks, especially slugs, can affect the vegetation development in these strips considerably. Although recent theoretical work suggests that more diverse plant communities will exhibit greater resistance against herbivore pressure, empirical studies are scarce. We conducted a semi-natural experiment in wildflower strips, manipulating trophic structure (reduction in herbivorous mol...
19 CitationsSource
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