More frequently occurring droughts, related to climate change, lead to reduced growth and loss of vitality in trees. The recent drought of 2018 was extreme, long-lasting and resulted in high evaporative demands due to the concurrent high temperatures. The aim of this study was to compare the drought resilience of nine temperate tree species in the Netherlands, and to determine their responses to the severe drought of 2018 in comparison with five earlier drought events since 1970. To assess drought effects on tree species, we analysed tree-ring series of 678 trees in 45 plots throughout the Netherlands. Resilience indices were calculated based on growth reactions and growth recovery after drought. Furthermore, the impact of drought events on species productivity was quantified. We observed species-specific differences in growth responses to drought timing. All species in nearly all sites responded with growth reductions to drought, except sessile oak (Quercus petraea (Matt.) Liebl.). The most productive species in our study were found to be drought sensitive, with productivity losses of up to 30 % during drought in some sites. Productivity losses were highest on the driest soils. Resilience to the 2018 drought did not differ significantly from other drought years for six out of the nine studied species. However, 77.5 % of the individual trees of all studied species did not fully recover in growth within the following two years. Low post-drought growth remains poorly understood and should be taken into account in future studies to safeguard the health and productivity of the forest under climate change. We consider sessile oak a promising species for future forests in the Netherlands. Based on our results, we provide an outlook on future resilience and growth potential of the species studied under projected climate change for the Netherlands.
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Young widowhood, conceptualized as the loss of one’s spouse before the age of 50, is a profoundly painful and distressing loss (Den Elzen, 2017, 2018). The literature on young widowhood shows the death of a partner generally causes a fragmentation of the self, as it violates expectations of the normal life cycle, namely growing old together (Haase and Johnston, 2012; Levinson, 1997). Premature loss of one’s spouse tends to be experienced by the surviving partner as distressing or traumatizing, such as having witnessed their suffering in illness or through accident (Den Elzen, 2018) or in struggling with unfinished business (Holland et al, 2020). Whilst post-traumatic stress is well-known and has been widely researched across various disciplines, the concept of post-traumatic growth is much newer and by contrast has received less attention. PTG was introduced as a scholarly concept by Tedeschi and Calhoun in the mid-1990s and is defined as a positive psychological change as a result of the struggle with highly challenging life events (2004). Calhoun and Tedeschi’s notion of PTG has been backed by a recent systematic review. In the first meta-analysis of moderate-to-high PTG, Wu et al. found that of the 10,181 subjects, about 50% experienced PTG (2019). They also reported that women, young people and victims of trauma experienced higher levels of PTG than men, the elderly and those who experienced indirect trauma. PTG has attracted some controversy, with some researchers questioning its scientific validity (Jayawickreme and Blackie, 2014). Others caution against the minimization of people’s suffering. Hayward is a trauma counsellor who advises approaching PTG carefully, highlighting that if it is introduced with clients too early it can "often be construed as minimizing someone's pain and suffering and minimizing the impact of the loss" (cited in Collier, 2016, n.p.). In addressing the critique of PTG, Calhoun and Tedeschi (2006) emphasize that the focus on investigating positive psychological change following trauma does not deny the common and well-documented negative psychological responses and distress following severe life stresses: “Negative events tend to produce, for most persons, consequences that are negative” (p.4). They argue however, and their research supports this finding, that for many people distressful events can foster positive psychological changes. We view PTG as a possibility following (profound) loss, and emphasize that PTG may continue to co-exist with painful and/or unresolved emotions regarding the loss itself. We conceptualize PTG as a continuum and not as an either/or binary with grief. Further, we wish to highlight that PTG is a highly individual process that depends on many factors, and we are not suggesting that the absence of PTG is to be seen as a failure. This chapter intends to contribute to the study of PTG through a person-centered approach. The most used method to assess PTG is the 21-item posttraumatic growth inventory developed by Calhoun and Tedeschi in 1996 (Jayawickreme & Blackie, 2014). Self-reported posttraumatic growth has been the foundation of PTG research, which has aimed to identify to what extent PTG evokes improved psychological and physical health. In discussing our own creative narrative processes of PTG, our practice-led-research lens aims to contribute to research on how PTG might be fostered. We propose a Writing-for-wellbeing approach in this context and explore what it offered us both as writers and widows and what it might offer the field of Writing-for-wellbeing and by extension clinical and scholarly practice.
Young widowhood, conceptualized as the loss of one’s spouse before the age of 50, is a profoundly painful and distressing loss (Den Elzen, 2017, 2018). The literature on young widowhood shows the death of a partner generally causes a fragmentation of the self, as it violates expectations of the normal life cycle, namely growing old together (Haase and Johnston, 2012; Levinson, 1997). Premature loss of one’s spouse tends to be experienced by the surviving partner as distressing or traumatizing, such as having witnessed their suffering in illness or through accident (Den Elzen, 2018) or in struggling with unfinished business (Holland et al, 2020). Whilst post-traumatic stress is well-known and has been widely researched across various disciplines, the concept of post-traumatic growth is much newer and by contrast has received less attention. PTG was introduced as a scholarly concept by Tedeschi and Calhoun in the mid-1990s and is defined as a positive psychological change as a result of the struggle with highly challenging life events (2004). Calhoun and Tedeschi’s notion of PTG has been backed by a recent systematic review. In the first meta-analysis of moderate-to-high PTG, Wu et al. found that of the 10,181 subjects, about 50% experienced PTG (2019). They also reported that women, young people and victims of trauma experienced higher levels of PTG than men, the elderly and those who experienced indirect trauma. PTG has attracted some controversy, with some researchers questioning its scientific validity (Jayawickreme and Blackie, 2014). Others caution against the minimization of people’s suffering. Hayward is a trauma counsellor who advises approaching PTG carefully, highlighting that if it is introduced with clients too early it can "often be construed as minimizing someone's pain and suffering and minimizing the impact of the loss" (cited in Collier, 2016, n.p.). In addressing the critique of PTG, Calhoun and Tedeschi (2006) emphasize that the focus on investigating positive psychological change following trauma does not deny the common and well-documented negative psychological responses and distress following severe life stresses: “Negative events tend to produce, for most persons, consequences that are negative” (p.4). They argue however, and their research supports this finding, that for many people distressful events can foster positive psychological changes. We view PTG as a possibility following (profound) loss, and emphasize that PTG may continue to co-exist with painful and/or unresolved emotions regarding the loss itself. We conceptualize PTG as a continuum and not as an either/or binary with grief. Further, we wish to highlight that PTG is a highly individual process that depends on many factors, and we are not suggesting that the absence of PTG is to be seen as a failure. This chapter intends to contribute to the study of PTG through a person-centered approach. The most used method to assess PTG is the 21-item posttraumatic growth inventory developed by Calhoun and Tedeschi in 1996 (Jayawickreme & Blackie, 2014). Self-reported posttraumatic growth has been the foundation of PTG research, which has aimed to identify to what extent PTG evokes improved psychological and physical health. In discussing our own creative narrative processes of PTG, our practice-led-research lens aims to contribute to research on how PTG might be fostered. We propose a Writing-for-wellbeing approach in this context and explore what it offered us both as writers and widows and what it might offer the field of Writing-for-wellbeing and by extension clinical and scholarly practice.
The transition towards an economy of wellbeing is complex, systemic, dynamic and uncertain. Individuals and organizations struggle to connect with and embrace their changing context. They need to create a mindset for the emergence of a culture of economic well-being. This requires a paradigm shift in the way reality is constructed. This emergence begins with the mindset of each individual, starting bottom-up. A mindset of economic well-being is built using agency, freedom, and responsibility to understand personal values, the multi-identity self, the mental models, and the individual context. A culture is created by waving individual mindsets together and allowing shared values, and new stories for their joint context to emerge. It is from this place of connection with the self and the other, that individuals' intrinsic motivation to act is found to engage in the transitions towards an economy of well-being. This project explores this theoretical framework further. Businesses play a key role in the transition toward an economy of well-being; they are instrumental in generating multiple types of value and redefining growth. They are key in the creation of the resilient world needed to respond to the complex and uncertain of our era. Varta-Valorisatielab, De-Kleine-Aarde, and Het Groene Brein are frontrunner organizations that understand their impact and influence. They are making bold strategic choices to lead their organizations towards an economy of well-being. Unfortunately, they often experience resistance from stakeholders. To address this resistance, the consortium in the proposal seeks to answer the research question: How can individuals who connect with their multi-identity-self, (via personal values, mental models, and personal context) develop a mindset of well-being that enables them to better connect with their stakeholders (the other) and together address the transitional needs of their collective context for the emergence of a culture of the economy of wellbeing?
Chemical preservation is an important process that prevents foods, personal care products, woods and household products, such as paints and coatings, from undesirable change or decomposition by microbial growth. To date, many different chemical preservatives are commercially available, but they are also associated with health threats and severe negative environmental impact. The demand for novel, safe, and green chemical preservatives is growing, and this process is further accelerated by the European Green Deal. It is expected that by the year of 2050 (or even as soon as 2035), all preservatives that do not meet the ‘safe-by-design’ and ‘biodegradability’ criteria are banned from production and use. To meet these European goals, there is a large need for the development of green, circular, and bio-degradable antimicrobial compounds that can serve as alternatives for the currently available biocidals/ preservatives. Anthocyanins, derived from fruits and flowers, meet these sustainability goals. Furthermore, preliminary research at the Hanze University of Applied Science has confirmed the antimicrobial efficacy of rose and tulip anthocyanin extracts against an array of microbial species. Therefore, these molecules have the potential to serve as novel, sustainable chemical preservatives. In the current project we develop a strategy consisting of fractionation and state-of-the-art characterization methods of individual anthocyanins and subsequent in vitro screening to identify anthocyanin-molecules with potent antimicrobial efficacy for application in paints, coatings and other products. To our knowledge this is the first attempt that combines in-depth chemical characterization of individual anthocyanins in relation to their antimicrobial efficacy. Once developed, this strategy will allow us to single out anthocyanin molecules with antimicrobial properties and give us insight in structure-activity relations of individual anthocyanins. Our approach is the first step towards the development of anthocyanin molecules as novel, circular and biodegradable non-toxic plant-based preservatives.
Worldwide, coral reefs are rapidly declining due to increased sea water temperatures and other environmental stresses (Figure 1). To counter the extinction of major coral reef building species on the island of Bonaire, the non-profit organization Reef Renewal Foundation Bonaire is restoring degraded reef sites using corals that are grown in local nurseries. In these nurseries, corals are propagated on artificial trees using fragmentation. After 6-8 months of growth in the nursery, the corals are transplanted to degraded reef sites around the island. Over the years more than 21.000 corals have been outplanted to reef restoration sites in this way. These corals show high survivorship under natural reef conditions but remain under threat by environmental disturbances, such as increased water temperatures, diseases, and competition with macroalgae. A promising intervention to increase reef persistence and resilience is to manipulate the coral-associated microbiome. At present, the composition of the microbiome in nursery-reared and outplanted corals on Bonaire is unknown. The aim of the current project is to identify and isolate naturally occurring beneficial bacteria that may stimulate the resilience of these corals. Our key objectives are: 1) to assess the presence of functionally beneficial bacteria in corals in nursery and restoration sites on Bonaire using metagenomic screening. 2) to design culture strategies to isolate these functionally beneficial bacteria. In the future, a selection of these beneficial bacteria can be applied to the corals to increase their resilience against environmental disturbances.
