Search results for "PES"

Response of microbial biomass and carbon dynamics to changing hydrological conditions in old peat deposits

2018

Peatlands play key roles in the global ecosystem carbon (C) balance, as important C-stores. Their efficiency as long-term C-stores or atmospheric C sink is affected by the rate of microbial mineralization. Most studies on the climate change effects on the microbial communities and C-cycling in peatlands have focused on the surface layers. This thesis compared microbial biomass, community composition and internal C cycling processes in drained vs. natural peat profiles with focus on deep old peat. Using the phospholipid fatty acid (PLFA) and rRNA gene analyses, the study particularly looked at the impact of long-term drainage and the short-term effects of temperature and water content on the…

Kuullun ja luetun tekstin ymmärtämisstrategiat ja -vaikeudet peruskoulun kolmannella ja yhdeksännellä luokalla

2003

Bioactivity of Carlina acaulis essential oil and its main component to the olive fruit fly, Bactrocera oleae: ingestion toxicity, electrophysiologica…

2021

In recent years, botanical insecticides based on essential oils (EOs), or their main components, have received much attention as promising tools for Integrated Pest Management, due to their environmental safety and low side effects on non-target organisms. In this study, Carlina acaulis EO and its main component, carlina oxide, recently proven to be effective larvicidal and adulticidal agents against some insect pests, were analyzed for their toxicity, electroantennographic (EAG), and behavioral responses to adult olive fruit fly (Bactrocera oleae). The C. acaulis EO was more toxic to the tephritid than the carlina oxide, and both were more toxic to the same insect pest than EOs from other …

Diuron mobility through vineyard soils contaminated with copper

2005

International audience; The herbicide diuron is frequently applied to vineyard soils in Burgundy, along with repeated treatments with Bordeaux mixture (a blend of copper sulfate and calcium hydroxide) that result in elevated copper concentrations. Cu could in principle affect the fate and transport of diuron or its metabolites in the soil either directly by complexation or indirectly by altering the populations or activity of microbes involved in their degradation. To assess the effect of high Cu concentrations on diuron transport, an experiment was designed with ten undisturbed columns of calcareous and acidic soils contaminated with 17–509 mg kg−1 total Cu (field-applied). Grass was plant…

Natural enemies emerging in cereal fields in spring may contribute to biological control

2022

1.Biological pest control is known to depend on landscape heterogeneity. However, such relationship shows irregular pattern and seems influenced by local farming practices and natural enemies that overwinter within crop fields. The objective of this study was to assess the contribution of emerging natural enemies in spring to biological control, and their response to the interaction between landscape heterogeneity and farming intensity. 2.We monitored the overwintering insect community using emergence traps and measured the local potential pest predation using prey cards in 30 cereal fields, in spring in France. Study fields were selected along a landscape heterogeneity gradient and farming…

I manufatti litici dagli scavi di Monte Maranfusa. Macine, macinelli e pestelli

2003

Studio dei manufatti litici connessi alla macinazione dei cereali ed altri alimenti (macine, macinelli e pestelli) provenienti dallo scavo dell'abitato indigeno di Monte Maranfusa (Palermo).

Sneaking into a Hotspot of Biodiversity: Coverage and Integrity of a Rhodolith Bed in the Strait of Sicily (Central Mediterranean Sea)

2022

Habitat mapping, physical characteristics and benthic community of a rhodolith bed in the Pelagie Islands (Strait of Sicily, Mediterranean Sea) were studied through Multi–Beam Echo–Sounder (MBES), Remotely Operated Vehicle (ROV) and grab samples. The geomorphological analysis revealed an articulated and wide rhodolith bed; video inspections highlighted a bed with high coverage, few sandy patches and with a prevalence of the boxwork morphotype. A total of 207 taxa with 876 specimens were identified, and Polychaeta was the dominant taxon. Linguimaera caesaris, a Lessepsian benthic amphipod, was recorded in all sampling sites, and its presence represents an input to deepen the benthic assembla…

Autophagy

2021

In 2008, we published the first set of guidelines for standardizing research in autophagy. Since then, this topic has received increasing attention, and many scientists have entered the field. Our knowledge base and relevant new technologies have also been expanding. Thus, it is important to formulate on a regular basis updated guidelines for monitoring autophagy in different organisms. Despite numerous reviews, there continues to be confusion regarding acceptable methods to evaluate autophagy, especially in multicellular eukaryotes. Here, we present a set of guidelines for investigators to select and interpret methods to examine autophagy and related processes, and for reviewers to provide…

E. Leitz palielināmais stikls uz statīva

2020

Raksts par palielināmajiem stikliem, mikroskopiem un optisko instrumentu ražošanas uzņēmumu "Ernst Leitz Wetzlar", kura ražotais vienkāršais sadalīšanas mikroskops nr. 46 atrodas Latvijas Universitātes Muzeja Botānikas un mikoloģijas kolekciju krājumā.

Imunitātes stiprinošu minerālvielu lietošana un aprite aptiekā laika posmā no 2021. gada 1. janvāra līdz 2022. gada 1. martam

2022

Minerālvielu piedevas ir visbiežāk lietotie uztura bagātinātāji visā pasaulē. Aptiekas klienti katru dienu iegādājas minerālvielas pie dažādām sūdzībām. Galvenie iemesli minerālvielu lietošanai ir nogurums, nespēks, pazemināta imunitāte un nervu sistēmas traucējumi. Darba mērķis bija salīdzināt minerālvielu pieprasījumu par periodu no 2021.gada 1. janvārim līdz 2022.gada 1. martam, kā arī noskaidrot, kādas minerālvielas cilvēki lieto visbiežāk un kāpēc izvēlās tieši tos. Darba uzdevumi bija izanalizēt minerālvielu apgrozījumu vienā no aptiekām, kura atrodas Rīgā, Ziepniekkalna rajonā, par periodu no 2021. gada 1. janvārim līdz 2022. gada 1. martam, noskaidrot, kuras minerālvielas ir vispiep…