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Bottom-up and top-d...
Bottom-up and top-down drivers of herbivory on Arabica coffee along an environmental and management gradient
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- Burger, H. F. (författare)
- Stockholm University,Lunds universitet,Stockholms universitet,Institutionen för ekologi, miljö och botanik,Lund University, Sweden,Entomologiska samlingarna,Biologiska museet,Biologiska institutionen,Naturvetenskapliga fakulteten,Entomological collections,Biological Museum,Department of Biology,Faculty of Science
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- Hylander, Kristoffer (författare)
- Stockholm University,Stockholms universitet,Institutionen för ekologi, miljö och botanik
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- Ayalew, Biruk (författare)
- Stockholm University,Stockholms universitet,Institutionen för ekologi, miljö och botanik
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- van Dam, N. M. (författare)
- German Centre for Integrative Biodiversity Research (iDiv),Friedrich Schiller University Jena
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- Mendesil, E. (författare)
- Jimma University
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- Schedl, A. (författare)
- Friedrich Schiller University Jena,German Centre for Integrative Biodiversity Research (iDiv)
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- Shimales, T. (författare)
- Ethiopian Institute of Agricultural Research
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- Zewdie, Beyene, 1983- (författare)
- Stockholm University,Stockholms universitet,Institutionen för ekologi, miljö och botanik
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- Tack, Ayco J. M. (författare)
- Stockholm University,Stockholms universitet,Institutionen för ekologi, miljö och botanik
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(creator_code:org_t)
- Elsevier BV, 2022
- 2022
- Engelska.
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Ingår i: Basic and Applied Ecology. - : Elsevier BV. - 1439-1791 .- 1618-0089. ; 59, s. 21-32
- Relaterad länk:
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https://doi.org/10.1...
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https://doi.org/10.1...
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http://dx.doi.org/10... (free)
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- While sustainable agriculture relies on natural pest control, we lack insights into the relative importance of bottom-up and top-down factors on pest levels, especially along broad environmental and management gradients. To this aim, we focused on bottom-up and top-down control of herbivore damage in sixty sites in the centre of origin of Arabica coffee in southwestern Ethiopia, where coffee grows along a management gradient ranging from little or no management in the natural forest to commercial plantations. More specifically, we examined how canopy cover, percentage of surrounding forest and management intensity affected caffeine and chlorogenic acid concentration (bottom-up process) and attack of dummy caterpillars by ants and birds (top-down process), and how these in turn affected pest levels. Caffeine and chlorogenic acid concentrations were negatively related to canopy cover, while ant attack rate was positively related to canopy cover. Both ant and bird attack rate increased with the percentage of surrounding forest. Yet, secondary chemistry and caterpillar attack rates were unrelated to herbivory, and herbivory was only directly and positively affected by management intensity. Our study highlights that canopy cover can have contrasting effects on plant defence and predation, and that changes in bottom-up and top-down factors do – unlike often assumed – not necessarily translate into reduced pest levels. Instead, direct effects of management on pest levels may be more important than bottom-up or top-down mediated effects.
Ämnesord
- NATURVETENSKAP -- Biologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences (hsv//eng)
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Nyckelord
- Agroforestry
- Artificial prey
- Bottom-up
- Ethiopia
- Pest control
- Top-down
- Agroforestry
- Artificial prey
- Bottom-up
- Ethiopia
- Pest control
- Top-down
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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Till lärosätets databas
- Av författaren/redakt...
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Burger, H. F.
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Hylander, Kristo ...
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Ayalew, Biruk
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van Dam, N. M.
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Mendesil, E.
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Schedl, A.
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visa fler...
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Shimales, T.
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Zewdie, Beyene, ...
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Tack, Ayco J. M.
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visa färre...
- Om ämnet
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- NATURVETENSKAP
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NATURVETENSKAP
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och Biologi
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- NATURVETENSKAP
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NATURVETENSKAP
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och Biologi
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och Ekologi
- Artiklar i publikationen
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Basic and Applie ...
- Av lärosätet
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Stockholms universitet
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Lunds universitet