Search results for "cens"

Landsat TM/ETM+ and tree-ring based assessment of spatiotemporal patterns of the autumnal moth (Epirrita autumnata) in northernmost Fennoscandia

2010

Abstract We used fine-spatial resolution remotely sensed data combined with tree-ring parameters in order to assess and reconstruct disturbances in mountain birch ( Betula pubescens ) forests caused by Epirrita autumnata (autumnal moth). Research was conducted in the area of Lake Tornetrask in northern Sweden where we utilized five proxy parameters to detect insect outbreak events over the 19th and 20th centuries. Digital change detection was applied on three pairs of multi-temporal NDVI images from Landsat TM/ETM+ to detect significant reductions in the photosynthetic activity of forested areas during disturbed growing seasons. An image segmentation gap-fill procedure was developed in orde…

Lifetime egg production of captive libellulids (Odonata)

2015

The estimation of lifetime egg production (LEP) is a central question in ecology, since the number of eggs produced determines the potential size of the following generation. In this study, I tried to obtain a rough estimation of the LEPs in libellulids in outdoor cages. The main questions were: (1) does hand feeding influence females’ life history traits; (2) how long is the maturation period and the lifespan; (3) does the quality/quantity of eggs vary with female age or size; and (4) how many eggs do females lay in their lifetime? I installed two outdoor cages and kept individually marked specimens of Orthetrum coerulescens and Sympetrum striolatum under semi-natural circumstances. Orthet…

“Ragusa asphalt basin (Hyblean Plateau, Sicily): proposal of an ascent model from the deep oilfield”

2008

Shared Binding Sites in Lepidoptera for Bacillus thuringiensis Cry1Ja and Cry1A Toxins

2001

ABSTRACT Bacillus thuringiensis toxins act by binding to specific target sites in the insect midgut epithelial membrane. The best-known mechanism of resistance to B. thuringiensis toxins is reduced binding to target sites. Because alteration of a binding site shared by several toxins may cause resistance to all of them, knowledge of which toxins share binding sites is useful for predicting cross-resistance. Conversely, cross-resistance among toxins suggests that the toxins share a binding site. At least two strains of diamondback moth ( Plutella xylostella ) with resistance to Cry1A toxins and reduced binding of Cry1A toxins have strong cross-resistance to Cry1Ja. Thus, we hypothesized that…

Top-down effects of a lytic bacteriophage and protozoa on bacteria in aqueous and biofilm phases

2014

Lytic bacteriophages and protozoan predators are the major causes of bacterial mortality in natural microbial communities, which also makes them potential candidates for biological control of bacterial pathogens. However, little is known about the relative impact of bacteriophages and protozoa on the dynamics of bacterial biomass in aqueous and biofilm phases. Here, we studied the temporal and spatial dynamics of bacterial biomass in a microcosm experiment where opportunistic pathogenic bacteria Serratia marcescens was exposed to particle‐feeding ciliates, surface‐feeding amoebas, and lytic bacteriophages for 8 weeks, ca. 1300 generations. We found that ciliates were the most efficient enem…

Host-range expansion of Spodoptera exigua multiple nucleopolyhedrovirus to Agrotis segetum larvae when the midgut is bypassed.

2010

Given the high similarity in genome content and organization between Spodoptera exigua multiple nucleopolyhedrovirus (SeMNPV) and Agrotis segetum nucleopolyhedrovirus (AgseNPV), as well as the high percentages of similarity found between their 30 core genes, the specificity of these NPVs was analysed for the respective insect hosts, S. exigua and A. segetum. The LD(50) for AgseNPV in second-instar A. segetum larvae was 83 occlusion bodies per larva and the LT(50) was 8.1 days. AgseNPV was orally infectious for S. exigua, but the LD(50) was 10 000-fold higher than for SeMNPV. SeMNPV was not infectious for A. segetum larvae when administered orally, but an infection was established by injecti…

Dasymetric distribution of votes in a dense city

2017

[EN] A large proportion of electoral analyses using geography are performed on a small area basis, such as polling units. Unfortunately, polling units are frequently redrawn, provoking breaks in their data series. Previous electoral results play a key role in many analyses. They are used by political party workers and journalists to present quick assessments of outcomes, by political scientists and electoral geographers to perform detailed scrutinizes and by pollsters and forecasters to anticipate electoral results. In this paper, we study to what extent more complex geographical approaches (based on a proper location of electors on the territory using dasymetric techniques) are of value in…

Por Fr. Nicolas de Jesus Belando, de la Descalzez Francisca, en recurso que, coadyuvado de su Serafica Religion, hace a la Real Persona de S. M. sint…

1744

Port. amb orla tip. i grav. xil. enmarcat de la Immaculada Caplletra ornada Sign.: [ ]1, A-D2 Notes marginals i envoltant el text Reclams

Por Fr. Nicolas de Jesus Belando, de la Descalzez Francisca, en recurso que, coadyuvado de su Serafica Religion, hace a la Real Persona de S. M. sint…

Signat al final: "Doct. D. Joseph Antonio de Quiròs." Port. amb orla tip. i grav. xil. enmarcat de la Immaculada Caplletra ornada Sign.: [ ]1, A-D2 Notes marginals i envoltant el text Reclams

Nuovi spunti su Benedetto Bacchini e il paratesto editoriale

2021

Three centuries after the death of the Benedictine abbot Benedetto Bacchini (1645-1721), the publication of the proceedings of an important conference dedicated to him has made it possible to reconsider his figure as a religious and intellectual of European rank. Among the aspects worthy of renewed attention, the significant role of the paratextual apparatus emerged, as a privileged area for expressing in deep the historical thought and vision proposed by Bacchini. The editorial paratexts of some of Bacchini’s works that were entrusted to the printing houses without the intervention of the author, edited by scholars who had great esteem and / or had been very close to him, also offer releva…