Novel physiological data needed for progress in global change ecology

Studies examining the underlying causes of the distributions of species and their future trajectories under climate change have benefitted from the accumulation of measurements of thermal tolerance across the tree of life. However, gaps in the global coverage of heat-tolerance data for ectotherms persist on four critical fronts. First, most large-scale analyses treat heat tolerance as a fixed species trait despite that population-level variation can equal or exceed cross-species variation. Second, terrestrial non-arthropod invertebrates and aquatic ectotherms other than bony fish have been poorly sampled, particularly in boreal and tropical regions, the Indian Ocean and the mesopelagic-deep ocean. Third, the study of climate impacts on the heat tolerance of terrestrial ectotherms has often neglected the interaction of environmental temperatures with water availability. And fourth, the mechanisms driving the dependence of heat tolerance on oxygen supply-demand remain largely unknown. We contend that filling those data and knowledge gaps requires novel strategies for the ecophysiological sampling of the range of understudied populations and species that occupy the length of climatic gradients globally. Such developments are essential for comprehensively predicting species responses to climate change across aquatic and terrestrial biomes

The effects of Omni-Channel retailing on promotional strategy

The objective of this study is to ascertain the effects of omni-channel retailing on the promotional strategy of retail organisations in order to better understand how to alter the promotional strategy in accordance with the ever-changing needs of customers and ultimately provide the customer with a seamless experience. This research is based on a critical systematic literature review of articles related to the topics of ‘omni-channel retailing’ and ‘promotional strategy’. The analysis made evident that most literature is focused on developing an understanding of omni-channel retailing; uncovering consumer behaviours in omni-channel retailing; and ways to adapt promotional strategies related to merchandising, sales promotion, selling, and word of mouth. Past research is quite fractured and does not represent a holistic picture of the implications of omni-channel retailing for promotional strategy. The analysis provided in this paper provides a general guideline for researchers and practitioners concerning promotional strategies that can be adopted in omni-channel retailing. © 2022 by the authors. Licensee MDPI, Basel, Switzerland

Forecasting a Language Shift Based on Cellular Automata

Language extinction as a consequence of language shifts is a widespread social phenomenon that affects several million people all over the world today. An important task for social sciences research should therefore be to gain an understanding of language shifts, especially as a way of forecasting the extinction or survival of threatened languages, i.e., determining whether or not the subordinate language will survive in communities with a dominant and a subordinate language. In general, modeling is usually a very difficult task in the social sciences, particularly when it comes to forecasting the values of variables. However, the cellular automata theory can help us overcome this traditional difficulty. The purpose of this article is to investigate language shifts in the speech behavior of individuals using the methodology of the cellular automata theory. The findings on the dynamics of social impacts in the field of social psychology and the empirical data from language surveys on the use of Catalan in Valencia allowed us to define a cellular automaton and carry out a set of simulations using that automaton. The simulation results highlighted the key factors in the progression or reversal of a language shift and the use of these factors allowed us to forecast the future of a threatened language in a bilingual community.Cellular Automata, Computational Simulations, Language, Social Dynamics

Bone need not remain an elephant in the room for radiocarbon dating

Radiocarbon (14C) analysis of skeletal remains by accelerator mass spectrometry is an essential tool in multiple branches of science. However, bone 14C dating results can be inconsistent and not comparable due to disparate laboratory pretreatment protocols that remove contamination. And, pretreatments are rarely discussed or reported by end-users, making it an ‘elephant in the room’ for Quaternary scientists. Through a questionnaire survey, I quantified consensus on the reliability of collagen pretreatments for 14C dating across 132 experts (25 countries). I discovered that while more than 95% of the audience was wary of contamination and would avoid gelatinization alone (minimum pretreatment used by most 14C facilities), 52% asked laboratories to choose the pretreatment method for them, and 58% could not rank the reliability of at least one pretreatment. Ultrafiltration was highly popular, and purification by XAD resins seemed restricted to American researchers. Isolating and dating the amino acid hydroxyproline was perceived as the most reliable pretreatment, but is expensive, time-consuming and not widely available. Solid evidence supports that only molecular-level dating accommodates all known bone contaminants and guarantees complete removal of humic and fulvic acids and conservation substances, with three key areas of progress: (i) innovation and more funded research is required to develop affordable analytical chemistry that can handle low-mass samples of collagen amino acids, (ii) a certification agency overseeing dating-quality control is needed to enhance methodological reproducibility and dating accuracy among laboratories, and (iii) more cross-disciplinary work with better 14C reporting etiquette will promote the integration of 14C dating across disciplines. Those developments could conclude long-standing debates based on low-accuracy data used to build chronologies for animal domestications, human/megafauna extirpations and migrations, archaeology, palaeoecology, palaeontology and palaeoclimate models.Herrando-Pérez, Salvado

A new species of Arrhopalites (Collembola, Symphypleona, Arrhopalitidae) from a cave on the Central East Iberian Peninsula

A new species of Collembola, Arrhopalites miravetensis, sp. nov., is described, from a karstic cave in the “Desierto de las Palmas” Nature Park, Castellón, Spain. The new species can be distinguished from all other species in the genus by the combination of the following characters: 2+2 pigmented eyes, rod-like anal appendage with two, relatively long, basal projections, small teeth present in both mucro edges and visible only from posterior view, winged circumanal setae, and no spines on the head. The new species belongs to the A. pygmaeus-group s. str. This species could be a troglophile species as the most of Arrhopalites, although there are too troglobite species

Development of urban bird indicators using data from monitoring schemes in two large European cities

Bird monitoring projects have provided valuable data for developing biological indicators to evaluate the state of natural and agricultural habitats. However, fewer advances have been made in urban environments. In this study we used bird monitoring data from 2002 to 2012 in two cities with different climates (Brussels and Barcelona), to generate two multi–species urban indicators to evaluate temporal trends on abundance of urban avifauna. To do this we used two different conceptual approaches, one based on a list of widespread species in European cities (WSEC) and another based exclusively on species widespread at city level (WCS) regardless of the birds occurring in other cities. The two indicators gave a similar general pattern, although we found a 3% difference in the mean annual change in both cities, thus suggesting that the values provided by urban indicators may differ depending on the conceptual approach and, hence, by the species list used to generate them. However, both indicators may have their own value and could be treated as complementary indices

Development of an urban bird indicator: using data from monitoring schemes in two large european cities

[eng] Development of urban bird indicators using data from monitoring schemes in two large European cities.— Bird monitoring projects have provided valuable data for developing biological indicators to evaluate the state of natural and agricultural habitats. However, fewer advances have been made in urban environments. In this study we used bird monitoring data from 2002 to 2012 in two cities with different climates (Brussels and Barcelona), to generate two multi–species urban indicators to evaluate temporal trends on abundance of urban avifauna. To do this we used two different conceptual approaches, one based on a list of widespread species in European cities (WSEC) and another based exclusively on species widespread at city level (WCS) regardless of the birds occurring in other cities. The two indicators gave a similar general pattern, although we found a 3% difference in the mean annual change in both cities, thus suggesting that the values provided by urban indicators may differ depending on the conceptual approach and, hence, by the species list used to generate them. However, both indicators may have their own value and could be treated as complementary indices.[cat] Desarrollo de indicadores de aves urbanas a partir de datos de sistemas de monitoreo en dos grandes ciudades europeas.— Los proyectos de monitoreo de aves han proporcionado datos valiosos para el desarrollo de indicadores biológicos que evalúan el estado de los hábitats naturales y agrícolas; sin embargo, los avances han sido menores en los ambientes urbanos. En este estudio se utilizaron los datos del monitoreo de aves de dos ciudades climáticamente diferentes (Bruselas y Barcelona; período 2002–2010) para generar dos indicadores urbanos multiespecíficos que valorasen las tendencias temporales en la abundancia del conjunto de las aves urbanas. Para hacer esto, utilizamos dos enfoques conceptuales distintos, uno basado en una lista de especies de amplia distribución en las ciudades europeas (WSEC) y otro basado exclusivamente en especies de amplia distribución a nivel de ciudad (WSC), independientemente de las aves de otras ciudades. Los dos indicadores dieron un patrón general similar, aunque un 3% de diferencia entre ellos en cuanto a los valores de cambio promedio anual se encontró en ambas ciudades. Esto sugiere que los valores producidos por los indicadores urbanos pueden diferir dependiendo de la aproximación conceptual y, por tanto, por la lista de especies utilizada para generarlos. Ambos indicadores pueden tener su propio interés y pueden ser tratados como complementarios

Social Simulation Based on Cellular Automata: Modeling Language Shifts

Nowadays, language shifts (i.e., a community of speakers stops using their traditional language and speaks a new one in all communication settings) may produce a massive extinction of languages throughout the world. In this context, an important task for social sciences research should therefore be to achieve a deep comprehension of language shifts. However, modeling the social and behavioral variables that guide the social behavior of individuals and groups has traditionally been tricky in all the social sciences. In this situation, social simulation provides a tool for testing hypotheses and building models of social phenomena (see, for example, Gilbert, 1996; Gilbert & Toitzsch, 2005; and Goldspink, 2002), especially the techniques based on cellular automata theory (Hegselmann, 1996; Hegselman & Flache, 1998; Nowak & Lewenstein, 1996). According to this framewok, we introduce the properties of a cellular automaton that incorporates some assumptions from the Gaelic-Arvanitika model of language shifts (Sasse, 1992) and the findings on the dynamics of social impacts in the field of social psychology (Latané, 1981; Nowak et al. 1990). Thus, we define a cellular automaton and carry out a set of simulations in which it is used. We incorporate empirical data from recent sociolinguistic studies in Catalonia (a region in Southern Europe) to run the automaton under different scenarios. The results allow us to highlight some of the main factors involved in a language shift. Finally, we also discuss how the social simulation based on cellular automata theory approach proves to be a useful tool for understanding language shifts

Ecos del XIX International Botanical Congress

Del 23 al 29 de juliol d’enguany va tenir lloc a Shenzhen (província de Guangdong, Xina) el XIX International Botanical Congress (IBC), el principal simposi del món dedicat a la botànica, i que se celebra cada sis anys. L’IBC va estar organitzat conjuntament per la Societat Botànica de la Xina i el govern de la Municipalitat de Shenzhen. Una setmana abans del congrés, del 17 al 21 de juliol, va tenir lloc la reunió de la Secció de Nomenclatura de l’IBC a la Ciutat Universitària de Shenzhen, amb l’objectiu principal de revisar el codi internacional de nomenclatura.Peer reviewe