University of Iceland

Induction of type I and III interferons by viral and endogenous stimuli in systemic sclerosis

ABSTRACT Objective The interferon (IFN) system is activated in systemic sclerosis (SSc), but the driving mechanisms remain unclear. We asked whether type I and III IFN responses to Toll-like receptor (TLR)-7/8/9 stimulation of leukocytes from patients with SSc differ from healthy...

Source-separation infrastructure and the reduction of residual household waste: Evidence from Iceland’s 2023 waste reform

This study evaluates whether Iceland’s 2023 waste-management reform, which combined Extended Producer Responsibility (EPR) financing with mandatory four-bin kerbside collection, reduced targeted household waste remaining in the general bin. Using a decade-long dataset (2014–2025)...

Holocene hydroclimatic variability and multi-frequency analyses at Lake Sidi Ali (Morocco)

Abstract. The North African desert margin is considered one of the most sensitive areas to future climate changes, yet the periodicities, coupling mechanisms and external forcing of Holocene environmental variability remain poorly understood. To investigate millennial- to centenn...

People, Pasture and Plant Use: The Environmental Archaeology of Helgusel Shieling Site, SW-Iceland

Shielings were a vital part of the agricultural system in Iceland for a millennium. They were sites of seasonal habitation where people brought domestic animals for grazing and to spare the infields for haymaking. In this paper, the site of Helgusel shieling in Mosfellsdalur is t...

Grazing abandonment in Iceland: unearthing the consequences for root biomass and community-level root functional traits

Abstract Background and aims In northern ecosystems, plants allocate biomass predominantly to roots, which are central to the transfer of recent photosynthate from plants to soil and thus soil carbon accumulation. Grazing typically modifies above-ground vegetation composition and...

Seasonal microplastic fluxes in sediment traps reveal highly variable pollution rates in sub‑Arctic lakes near Reykjavík, Iceland

Abstract Microplastics represent an emerging threat to freshwater ecosystems. However, their seasonal deposition patterns in lake sediments remain poorly understood due to low number of studies, conflicting results and methodological inconsistencies. This study presents the first...

The Price of a Horn: How Governance and Policy Shape an Illegal Wildlife Market

ABSTRACT Understanding the determinants of illegal rhino horn prices can provide information for the design of policies to conserve wild rhinoceroses. Using a theoretical model, we identify empirical measures that may affect illegal rhino horn prices and derive testable hypothese...

Stability analysis of hybrid integrator-gain systems using linear programming

Analyzing the stability and performance of (possibly discontinuous) conewise linear systems, e.g., hybrid integrator-gain systems (HIGS), requires tools specifically designed for hybrid systems. For HIGS in particular, most results rely on constructing continuous piecewise quadra...