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| Registros recuperados: 60 | |
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| Fataar, Shakira; Kahmen, Ansgar; Luka, Henryk. |
| In conservation biological control, flowers can be used to increase the biological control potential of parasitoids, which benefit from the offered food sources. Besides exhibiting exploitable nectar, flowers should preferably be olfactorily attractive, as highly attractive flowers are easily located, reducing the time spent searching for food and subsequently increasing the per capita host searching efficiency. In this study we thus focused on the olfactory attractiveness of Fagopyrum esculentum Moench (Polygonaceae), Centaurea cyanus L. (Asteraceae) and Vicia sativa L. (Fabaceae) to Cotesia rubecula (Marshall, 1885) (Hymenoptera: Braconidae), a larval parasitoid of the cabbage pest Pieris rapae (Linnaeus, 1758) (Lepidoptera: Pieridae). With a Y-tube... |
| Tipo: Journal paper |
Palavras-chave: Biodiversity and ecosystem services Crop health; Quality; Protection. |
| Ano: 2019 |
URL: http://orgprints.org/34499/1/Fataar_etal_2019-BiolControl-Vol132-p16-22.pdf |
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| Luka, Henryk; Pfiffner, Lukas; Wyss, Eric. |
| Amara ovata und A. similata, zwei im Adultstadium phytophage Laufkäferarten, wiesen in Rapskulturen im Vergleich zu Winterweizenflächen und ökologischen Ausgleichsflächen (Buntbrache und extensiven Wieslandstreifen) in der Nähe von Basel ein mit TRichterfallen gemessene, hohe Aktivitätsdichte auf. Handfänge und Beobachtungen auf fünf anderen Rapsfeldern in der Umgebung von Basel zeigten, dass Amara ovata und A. similata Schoten, Samen und Blüten der Rapskultur fressen. Aufgrund der nahen Verwandtschaft des Rapses mit anderen Brassicaceen nehmen wir an, dass Raps für A. ovata und A. similata eine bevorzugte Nahrungsquelle darstellt. Ob dadurch ein wirtschaftlicher Schaden entsteht, ist zurzeit noch nicht klar. Ein stärkerer Befall ist in der Nähe von... |
| Tipo: Journal paper |
Palavras-chave: Cereals; Pulses and oilseeds Biodiversity and ecosystem services Crop health; Quality; Protection. |
| Ano: 1998 |
URL: http://orgprints.org/20216/1/19_Luka_et_al_PCA_1998_Amara_Raps.pdf |
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| Pfiffner, Lukas; Luka, Henryk. |
| Earthworm populations in low-input integrated crop management (ICM: no application of insecticides, fungicides and growth regulators) and organic farming systems were compared. The study was performed as a 3-year field survey using a paired-farm approach in six different locations in northwestern Switzerland. Earthworms were extracted from soils sampled from 24 winter cereal fields using a combined method of extraction by mustard flour solution and handsorting. Earthworm communities differed between these farming systems. Over all sites, the mean biomass, abundance and species richness of earthworms found in the low-input ICM fields were significantly lower than in the organic fields. Adult earthworms in organic fields were 114% more abundant than in ICM... |
| Tipo: Journal paper |
Palavras-chave: Biodiversity and ecosystem services. |
| Ano: 2007 |
URL: http://orgprints.org/13142/1/pfiffner%2Dluka%2D2007%2Dearthworms_low_input_cereal_APSOIL.pdf |
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| Pfiffner, Lukas; Luka, Henryk. |
| We compared the effects of different low-input farming systems on carabids and spiders. The study was performed in a 3-year field survey using a paired-farm approach in six different landscapes units in northwestern Switzerland considering also the nearby semi-natural habitats. Carabids and spiders were sampled in 24 winter cereal crops and 18 semi-natural habitats using five funnel pitfall traps per site. Considering all cereal sites, in low-input ICM fields (= no insecticides, fungicides and growth regulators; ICM: Integrated crop management) 36% less carabids and 8% less spider specimens were found. In several cases, carabid populations of organic fields were significantly richer in species and abundance than in the low-input integrated crop... |
| Tipo: Journal paper |
Palavras-chave: Biodiversity and ecosystem services. |
| Ano: 2003 |
URL: http://orgprints.org/945/1/pfifner%2Dluka%2D2003%2Dlow%2Dinput%2Dfarming%2Dsystems.pdf |
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| Benz, Regula; Jucker, Phillip; Albrecht, Matthias; Charrière, Jean-Daniel; Herzog, Felix; Jacot, Katja; Tschumi, Matthias; Luka, Henryk; Pfiffner, Lukas; Ramseier, Hans; Knauer, Katja; Steinmann, Patricia; Tschumi, Eva; Silvestri, Gabriella. |
| Le document aide les conseillères et conseillers, exploitantes et exploitants et autres acteurs agricoles dans la mise en oeuvre du nouveau type de surface de promotion de la biodiversité Bandes fleuries pour les pollinisateurs et les autres organismes utiles. La présente fiche décrit l’utilité spécifique aux cultures des bandes fleuries, leur mise en place et leur retournement. De plus, des recommandations pour une mise en oeuvre optimale sont formulées afi n de permettre aux pollinisateurs et autres auxiliaires d’accomplir les services attendus à long terme. |
| Tipo: Report |
Palavras-chave: Biodiversity and ecosystem services. |
| Ano: 2015 |
URL: http://orgprints.org/28780/1/benz-etal-2015-Bandes_fleuries_AGRIDEA-Fiche.pdf |
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| Balmer, Oliver; Géneau, Céline E.; Belz, Elodie; Weishaupt, Bettina; Förderer, Gerda; Moos, Sebastian; Ditner, Nadine; Juric, Ivan; Luka, Henryk. |
| Monocultures typical of intensive agriculture offer ideal conditions to specialized herbivores while depriving their natural enemies of habitat and nutritional resources. The resulting release of herbivores from both bottom-up and top-down control causes pest outbreaks in economically important crops. Boosting locally occurring natural enemy populations through species-specific habitat management to restore natural herbivore control has been much advocated but remains rarely tested in the field. Here, we investigated whether adding specifically selected flowering plants to monocultures increases parasitation rates of herbivores and crop yield. We performed replicated field experiments in 2 years and found that adding cornflowers (Centaurea cyanus) into... |
| Tipo: Journal paper |
Palavras-chave: Vegetables Biodiversity and ecosystem services Crop health; Quality; Protection. |
| Ano: 2014 |
URL: http://orgprints.org/36391/1/Balmer_etal_2014_BiolControl_Vol76_p19-27.pdf |
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| Luka, Henryk; Marggi, Werner; Nagel, Peter. |
| The species Agonum nigrum DEJEAN, 1828, rare in central Europe, is reported for the first time from Switzerland. A distribution map is provided, based on reviewed specimens from museum collections and on literature data. Agonum nigrum is a Mediterranean species with a core distribution in southern Europe. The Swiss locality is situated on the upper Rhine near Basel in an area of meadows and light forest, which has been strongly shaped by man. The habitat is characterized by regular artificial inundation for ground water supply. The characters distinguishing A. nigrum from the similar Agomun atratum (DUFTSCHMID, 1812) are critically examined, and corrected or supplemented when neccssary. |
| Tipo: Journal paper |
Palavras-chave: Biodiversity and ecosystem services. |
| Ano: 1997 |
URL: http://orgprints.org/20217/1/17_Luka_et_al_1997_A_nigrum.pdf |
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| Luka, Henryk; Leimgruber, Andrea; Willareth, Martin; Nagel, Peter; Pfiffner, Lukas; Wyss, Eric; Schlatter, Christian; Schied, Johannes; Traugott, Michael. |
| Beneficials can prevent or reduce outbreaks of pest species. To strengthen the populations of beneficials, their food sources must be improved in cultivated areas. The effects of habitat management for augmenting beneficial population on parasitism and predation rates of three lepidopteran pest species were investigated on two organic fields in Alten (Switzerland). The aim was to improve pest regulation through wild flower strips along fields and by planting Centaurea cyanus as companion plant within the crop. Strips of Centaurea cyanus and Fagopyrum esculentum increased parasitsm on the lepidopteran pests. C. cyanus planted as companion plant furthermore increased predation on the eggs and parasitism of the larvae of Mamestra brassicae. Several... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Crop health; Quality; Protection. |
| Ano: 2009 |
URL: http://orgprints.org/14127/1/Luka_14127.pdf |
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| Luka, Henryk; Marggi, Werner; Huber, Charles; Gonseth, Yves; Nagel, Peter. |
| Die Laufkäfer und Sandlaufkäfer (Coleoptera, Carabidae) sind ausgezeichnete ökologische Zeigerorganismen auch für naturschutzrelevante Untersuchungen, sofern je nach Fragestellung die entsprechenden autökologischen oder taxonomischen Parameter bekannt sind. Die für die Schweizer Carabiden verfügbaren Angaben sind oft wenig differenziert und beruhen meist auf der qualitativen Interpretation zufällig verfügbarer Angaben. Die vorliegende Publikation stützt sich vornehmlich auf eine quantitative Auswertung umfangreicher, räumlich repräsentativer Primärdaten. Die hier gewählte Form einer kommentierten Liste bietet sich für verschiedenste Forschungsbereiche wie Bioindikation, Faunistik oder Biogeographie als einfach zu benutzendes, dabei aber aussagekräftiges... |
| Tipo: Book |
Palavras-chave: Biodiversity and ecosystem services. |
| Ano: 2009 |
URL: http://orgprints.org/18166/1/luka_etal%2D2009%2Decology%2Datlas.pdf |
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| Registros recuperados: 60 | |
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