The Political Economy of Social Upgrading

Based on a Marxist reworking of the global value chains (GVC) framework, supplemented by insights from structuralist development economics and dependency theory, the thesis investigates what role evolving class relations play in processes of social and economic upgrading in global garment value chains. Situating workers’ agency at the intersection of a horizontal axis (local capital-labor-state relations) and a vertical axis (governance and distributional dynamics of the GVC), the thesis starts out by examining the key features of the 21st century garment GVC and their implications for producer countries. It is shown how a series of interrelated processes, including the transition to neoliberalism in the North, and the phase-out of quotas in the South, combined to produce a “supplier squeeze” in the garment GVC, with a simultaneous depression of export prices and an escalation of non-price requirements. Drawing on the work of the dependentista Marini, it is argued that these distributional dynamics amount to a form of unequal exchange that incentivizes manufacturers to super-exploit workers, pushing their wages below reproduction costs and/or working them beyond exhaustion.

Evolutionary and Ecological Explanations for the Elevational Flexibility of Several East African Bird Species Complexes

Africa’s montane areas are broken up into several large and small units, each isolated as forest-capped “sky islands” in a “sea” of dry lowland savanna. Many elements of their biota, including montane forest birds, are shared across several disjunct mountains, yet it has been difficult to rigorously define an Afromontane forest avifauna, or determine its evolutionary relationships with the birds of the surrounding lowland forests. In order to trace the historical relationship between lowland and highland avifaunas, we review cases of species or groups of closely related species with breeding populations at different elevations, and use phylogeographic methods to explore the historical connections between such populations within the biodiversity hotspot of East Africa. The study reveals several idiosyncratic patterns, but also a prominent number of cases of gene flow between populations in southern areas, mainly around the Malawi Rift, and mountains and coastal forests to the north, close to the equator. This may reflect more continuous past distributions through northern Mozambique and coastal Tanzania, or seasonal migrations between areas with different rainfall regimes. Over time, these distributional dynamics have resulted in a higher persistence of lineages, and an accumulation of forest-dependent lineages within the Eastern Arc Mountains of Tanzania and the northern part of the coastal forest mosaic.

Don’t forget the vertical dimension: assessment of distributional dynamics of cave-dwelling invertebrates in both ground and parietal microhabitats

Biological studies on factors shaping underground communities are poor, especially those considering simultaneously organisms with different degrees of adaptation to cave life. In this study, we assessed the annual dynamics and use of both horizontal and vertical microhabitats of a whole community with the aim of understanding whether cave-dwelling organisms have a similar distribution among vertical and ground-level microhabitats and to find out which microhabitat features influence such distribution. We monthly assessed from 2017 to 2018, by direct observation combined with quadrat sampling method on the ground and transects on the walls, richness and abundance of 62 cave-dwelling species in a cave of Northern Italy. Environmental factors such as light intensity, temperature, relative humidity and mineralogical composition of the substrates were measured during each monitoring session, influencing the dynamics of the whole community and revealing significant differences between ground and wall microhabitats. A gradient of variation of the species assemblages occurred from the entrance toward inner areas, however, evidence that the dynamics of the walls are very different from those occurring at the ground independent from the distance from the surface are shown. Biodiversity indices highlighted sampling area diversity and a discrete total cave fauna biodiversity with the highest values found near the entrance and the lowest in the inner part of the cave.

Human Capital Reporting (HCR) and Shareholder Value Maximization in Listed Manufacturing Firms in Nigeria

This study examines the impact of human resource reporting (HCR) or disclosures on share price and earnings potential measured by the earnings per share. It adopts an ex-post causal research design and employs secondary data retrieved from annual reports of 30 selected manufacturing firms in Nigeria. Data was analyzed using descriptive statistics, correlation analysis and the quantile regression techniques. The research outcome from the distributional dynamics for share price tends to highlight that the effect of HRD-Index is significant at 5% for firms at high levels above average financial performance at Q[0.2.] - Q[0.4] and also significant at 5% for firms at average levels of firm value Q[0.5] and even below average levels Q[0.6]-Q[0.9]. Finding thus highlights that the impact of human resource disclosures on share price or market value may not necessarily be a function of the share price levels. The distributional dynamics for EPS used as the measure for earnings potential is similar to that which was observed for Share price and tends to highlight that the effect of human resource disclosure is significant at 5% for firms at high levels above average earnings per share measure of financial performance at Q[0.1], Q[0.2.], Q[0.3.] and Q[0.4.] and also significant at 5% for firms at average levels of financial performance Q[0.5] and even below average levels Q[0.6]-Q[0.8]. The recommendation is that human resource investments should not been looked at as an expense but as a competitive strategy of the firm.

Firm strategies and distributional dynamics: labour share in Italian medium-large firms

Using an original database on medium and large Italian firms built by merging the Rilevazione Imprese e Lavoro run by INAPP in 2010 and 2015 with the AIDA archive by Bureau Van Dijk, we show that the trend of the labour share differs along the labour share distribution. We carry out Unconditional Quantile Regression decompositions to explore the main drivers behind this heterogeneity. Thus, we contribute to the literature on the dynamics of the labour share since we investigate phenomena which cannot be observed through a macro perspective or by looking at a single parameter of the labour share distribution. After including in our specifications several firm-level characteristics and considering composition effects, we find that outsourcing is the main factor which plays a role in reducing the labour share along the distribution. Further different mechanisms act in the various parts of the distribution: unionization contributes to increase the labour share at the top of the labour share distribution, while the introduction of some forms of product (process) innovations is associated with a negative (positive) change in the labour share for those firms at the bottom of the labour share distribution.

Extinction of the Thylacine

The Thylacine (Thylacinus cynocephalus), or ‘Tasmanian tiger’, is an icon of recent extinctions, but the timing of its final demise is shrouded in controversy. Extirpated from mainland Australia in the mid-Holocene, the large island of Tasmania became the species’ final stronghold. Following European settlement, the Thylacine was heavily persecuted and pushed to the margins of its range. The last captive animal died in 1936, but numerous sightings were reported thereafter. Here we collate and characterize the type, quality, and uncertainty of over a thousand unique sighting records of Thylacines since 1910. We use this novel and unique curated database to underpin a detailed reconstruction and mapping of the species’ spatio-temporal distributional dynamics, to pinpoint refugia of late survival and estimate the bioregional patterns of extirpation. Contrary to expectations, the inferred extinction window is wide and relatively recent, spanning from the 1980s to the present day, with extinction most likely in the late 1990s or early 2000s. While improbable, these aggregate data and modelling suggest some chance of ongoing persistence in the remote wilderness of the island. Although our findings for this iconic species hold intrinsic value, our new spatio-temporal mapping of extirpation patterns is also applicable more generally, to support the conservation prioritization and search efforts for other rare taxa of uncertain status.Significance statementLike the Dodo and Passenger Pigeon before it, the Thylacine has become an iconic symbol of human-caused extinction. Even today, reports of the Thylacine’s possible ongoing survival in remote regions of Tasmania are newsworthy and continue to capture the public’s imagination, with much debate over whether the extinction event has yet occurred and if so, when? We show, using a unique and robust spatio-temporal mapping and modelling approach, underpinned by the world’s first sightings database (from 1910-present day), that the Thylacine likely persisted until the late 20th century, with some possibility of ongoing survival.

Using chemical reaction network theory to show stability of distributional dynamics in game theory

<p style='text-indent:20px;'>This article shows how to apply results of chemical reaction network theory (CRNT) to prove uniqueness and stability of a positive equilibrium for pairs/groups distributional dynamics that arise in game theoretic models. Evolutionary game theory assumes that individuals accrue their fitness through interactions with other individuals. When there are two or more different strategies in the population, this theory assumes that pairs (groups) are formed instantaneously and randomly so that the corresponding pairs (groups) distribution is described by the Hardy–Weinberg (binomial) distribution. If interactions times are phenotype dependent the Hardy-Weinberg distribution does not apply. Even if it becomes impossible to calculate the pairs/groups distribution analytically we show that CRNT is a general tool that is very useful to prove not only existence of the equilibrium, but also its stability. In this article, we apply CRNT to pair formation model that arises in two player games (e.g., Hawk-Dove, Prisoner's Dilemma game), to group formation that arises, e.g., in Public Goods Game, and to distribution of a single population in patchy environments. We also show by generalizing the Battle of the Sexes game that the methodology does not always apply.</p>