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| Registros recuperados: 60 | |
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| Blick, Theo; Pfiffner, Lukas; Luka, Henryk. |
| Ground-living spiders on arable land in north-westem Switzerland with a Central European comparison (Arachnida: Araneae). The ground-living spider fauna of north-westem Switzerland is analysed in a general view during the years 1993-1998 based on 67 data sets. Two species (Oedothorax apicatus, Pardosa agrestis) dominated c1early. 14 species had representing values of 80 to 100 %, 9 species from 50 to 80% and 18 species from 20 to 50 %. Eperigone trilobata and Pardosa proxima are geographically typical. A total of 131 species and 52'878 adult spiders were included in this analysis. An additional analysis of 47 investigations around Central Europe yielded four species (Oedothorax apicatus, Erigone atra, Erigone dentipalpis, Meioneta rurestris) occurring... |
| Tipo: Journal paper |
Palavras-chave: Crop husbandry; Biodiversity and ecosystem services. |
| Ano: 2000 |
URL: http://orgprints.org/20213/1/37_Blick_47_Acker_CH_CEurope.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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| Koller, Martin; Luka, Henryk. |
| Damit natürlich vorkommende Nützlinge, wie zum Beispiel die Schlupfwespen auf einem Gemüseacker überhaupt zur Wirkung kommen können, brauchen sie zusätzliche Nahrungsquellen, wie Blütenpflanzen mit einfach erreichbarem Nektar. Die Schlupfwespen können mit kulturspezifischen, massgeschneiderten Blühstreifenmischungen gefördert werden. Wenn Nützlinge gute Ernährungsbedingungen vorfinden, werden ihre Vermehrungsrate und ihr Ausbreitungspotential erhöht. Somit können sie Schädlinge viel besser reduzieren. Es handelt sich dabei um Wechselwirkungen zwischen Blühstreifen und naturnahen Landschaftselementen wie z.B. Buntbrachen, Hecken oder extensiven Wiesen, die für die Nützlinge als Überwinterungsstandorte oder als Rückzugsgebiet nach der Ernte dienen. |
| Tipo: Newspaper or magazine article |
Palavras-chave: Vegetables; Biodiversity and ecosystem services. |
| Ano: 2018 |
URL: http://orgprints.org/34543/1/Koller-Luka_Gmuesblatt02-April-2018_S4.pdf |
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| Jeanneret, Philippe; Schüpbach, Beatrice; Luka, Henryk. |
| Determining habitat and landscape features that lead to patterns of biodiversity in cultivated landscapes is an important step for the assessment of the impact of extensification programmes in agriculture. In the context of an assessment of the effect of national extensification programme on biodiversity in agriculture, field data of three regions (7 km2 each) were collected according to a stratified sampling method. A distribution model of three taxa (spiders, carabid beetles, and butterflies) is related to influencing factors by means of multivariate statistics (canonical correspondence analysis (CCA), partial CCA). Hypothetical influencing factors are categorised as follows: (1) habitat (habitat type, plant species richness) and (2) landscape (habitat... |
| Tipo: Journal paper |
Palavras-chave: Crop husbandry; Biodiversity and ecosystem services. |
| Ano: 2003 |
URL: http://orgprints.org/20208/1/47_Jeanneret_etal_2003_Quantifying.pdf |
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| Luka, Henryk; Pfiffner, Lukas; Niggli, Urs. |
| Carabid populations (species diversity and abundance) in different crops were investigated during the period from April to July 1993 to 1995. The study was carried out on two farms in North-Western Switzerland. Nine fields with winter cereals (4x wheat, 2x spelt, 2x barley, lx rye), three rape fields, five spring cultures (3x maize, lx soybeans, lx potatoes) and an arable meadow were studied. In winter cereals, more carabid species were found than in spring cultures. In barley, we recorded fewer carabid species and individuals, larger numbers of hygrophilaus carabids and a more even population structure than in the other cereals. In rape, we recorded the highest numbers of carabid species and individuals, and very large numbers of Amara similata and A... |
| Tipo: Journal paper |
Palavras-chave: Cereals; Pulses and oilseeds Biodiversity and ecosystem services. |
| Ano: 2000 |
URL: http://orgprints.org/20212/1/38_Lukaetal_2000_Carab_Kultureinfluss.pdf |
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| Schied, Johannes; Leimgruber, Andrea; Willareth, Martin; Nagel, Peter; Pfiffner, Lukas; Luka, Henryk; Wyss, Eric. |
| Within this project we assess whether wildflower strips and companion plants increase the control of cabbage pests Plutella xylostella L. (Lepidoptera: Plutellidae), Mamestra brassicae L. (Lepidoptera: Noctuidae) and Pieris rapae L. (Lepidoptera: Pieridae) by (1) naturally occurring parasitoids and predators and (2) mass‐releasedn Trichogramma brassciae (Bezdenko) (Hymenoptera: Trichogrammatidae) parasitoids. Two organic cabbage fields were used for this study: adjacent to each field a wildflower strip was sown and companion plants (Centaurea cyanus L. (Asteraceae)) intermixed within the crop. Within each field ~15,000 M. brassicae eggs were placed out to determine the parasitism rates by mass‐released T. brassicae and to assess the levels of egg... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Vegetables; Biodiversity and ecosystem services. |
| Ano: 2009 |
URL: http://orgprints.org/18168/1/schied-etal-2009-biological-control.pdf |
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| Marggi, Werner; Luka, Henryk; Huber, Charles; Wrase, David W.; Durrer, Heinz. |
| Die eurosibirisch verbreitete Art Harpalus (s. str.) subcylindricus DEJAEN, 1928 wird erstmals in der Schweiz (Nordschweiz, Tessin) und im Esass (Frankreich) nachgewiesen. Sie lässt sich nur durch Genitaluntersuchung von der nächstverwandten Art Harpalus anxius (DUFTSCHMID, 1812) trennen. Eine Differenzialdiagnose wird dargestellt, die Aedoeagi sind abgebildet, und eine Verbreitungskarte dokumentiert die neuen Funde. |
| Tipo: Journal paper |
Palavras-chave: Biodiversity and ecosystem services. |
| Ano: 2010 |
URL: http://orgprints.org/20209/1/67_Marggi_etal_2010_subcylindricus.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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| 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. |
| Die Biodiversität ist für das Funktionieren von vielen Prozessen im Naturhaushalt verantwortlich. Es ist möglich, diese Funktionen und Prozesse so zu steuern, dass wir sie auch in der Landwirtschaft nutzen können. Deswegen wird von Funktioneller Agro-Biodiversität gesprochen, also regulierender Ökosystemdienstleistung (ÖSDL), die eine nachhaltige landwirtschaftliche Produktion durch Schädlings- und Krankheitsregulation oder Bestäubung, sichert. Deswegen stellt Funktionelle Agro-Biodiversität einen wichtigen Teil des modernen biologischen Pflanzenschutzes dar, wobei der Nützlingsförderung durch die Anlage naturnaher Flächen („Wohn-, Ess- und Schlafzimmer“ für die Nützlinge) eine zentrale Rolle zukommt. Sie bildet die Grundlagen, die Nahrungsproduktion und... |
| Tipo: Newspaper or magazine article |
Palavras-chave: Vegetables Crop health; Quality; Protection. |
| Ano: 2015 |
URL: http://orgprints.org/36393/1/luka-2015-Beitrag-in-Biogemusefibel_2015-S13-17.pdf |
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| Pfiffner, Lukas; Luka, Henryk; Schlatter, Christian; Juen, Anita; Traugott, Michael. |
| In a 2-year experiment we investigated whether wildflower strips can be used to enhance the control of cabbage moth, Mamestra brassicae L., and cabbage white butterfly, Pieris rapae L. At two sites, including six organically cultivated fields, M. brassicae egg parasitism and predation rates were determined along with an assessment of larval parasitism rates in M. brassicae and P. rapae using a DNA-based approach. Within each field, plots with and without wildflower strips were sampled and a grid design of 3 m x 3 m was used to analyse the spatial pattern of parasitism. The provision of wildflower strips provided an idiosyncratic effect on the control of lepidopterans: parasitism rates in M. brassicae eggs and larvae were not affected, whereas parasitism... |
| Tipo: Journal paper |
Palavras-chave: Biodiversity and ecosystem services Crop health; Quality; Protection. |
| Ano: 2009 |
URL: http://orgprints.org/17813/1/pfiffner-etal-2009-agriculture-ecosystems-environment.pdf |
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| Luka, Henryk; Walther, Barbara; Durrer, Heinz. |
| River-meadow landscapes Count among the most endangered landscape elements of central Europe. The present renaturation Programme for the rivermeadow landscapes of the Petite Camargue Alsacienne (F, Alsace, Departement Haut-Rhin) involved a survey on ground beetles (Coleoptera, Carahidae) as representatives of the epigaeic soil fauna. A provisional list of carahid species found at seven survey sites in the Petite Camargue Alsacienne was compiled on the basis of the results of four ecological studies (1991-1996). The results were also analysed with regard to species occurrence, population number and structure, humidity and habitat preferences, and the ocurrence of rare and endangered species. 149 carabid s~ecies were identified in altoeether 29.952... |
| Tipo: Journal paper |
Palavras-chave: "Organics" in general; Biodiversity and ecosystem services. |
| Ano: 1998 |
URL: http://orgprints.org/20214/1/23_Luka_et_al_PCA_1998pdf.pdf |
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| Registros recuperados: 60 | |
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