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Changes and development are fundamental principles in biocenoses and can affect a multitude of ecological processes. In insect communities phenological and density changes, changes in species richness and community composition, as well as interactions between those changes, are the most important macro processes. However, climate change and other factors like habitat degradation and loss alter these processes leading to shifts and general biodiversity declines. Even though knowledge about insect decline in central Europe increased during the last decades, there are significant knowledge gaps about the development of insect communities in certain habitats and taxa. For example, insect communities in small lentic as well as in forested habitats are under-sampled and reported to be less endangered than communities in other habitats. Furthermore, the changes within habitats and taxa are additionally influenced by certain traits, like host or feeding specialization. To disentangle these influences and to increase the knowledge about the general long-term development of insect communities, comprehensive long-term monitoring studies are needed. In addition, long-term effects of conservation strategies should also be evaluated on large time scales in order to be able to decide on a scientific base which strategies are effective in promoting possibly declining taxa. Hence, this thesis also tackles the effects of an integrative conservation strategy on wood dependent beetle and fungi, beside the development of water beetle and macro moth communities over multiple decades. In Chapter 2 I present a study on the development of water beetle communities (Dytiscidae, Haliplidae, Noteridae) in 33 water bodies in Southern Germany from 1991 to 2018. Time-standardized capture per waterbody was used during three periods: between 1991 and 1995, 2007 and 2008, and 2017 and 2018. Results showed annual declines in both species number (ca. -1%) and abundance (ca. -2%). In addition, community composition shifted over time in part due to changing pH values. Hence, the recorded changes during the 28-year study period partly reflect natural succession processes. However, since also moor-related beetle species decreased significantly, it is likely that water beetles in southern Germany are also threatened by non-successional factors, including desiccation, increased nitrogen input and/or mineralization, as well as the loss of specific habitats. The results suggest, that in small to midsize lentic waterbodies, current development should aim for constant creation of new water bodies and protection of moor waterbodies in order to protect water beetle communities on a landscape scale. In Chapter 3 I present an analysis of the development of nocturnal macro moth species richness, abundance and biomass over four decades in forests of southern Germany. Two local scale data sets featuring a coppiced oak forest as well as an oak high forest were analysed separately from a regional data set representing all forest types in the temperate zone of Central Europe. At the regional scale species richness, abundance and biomass showed annual declines of ca. 1 %, 1.3 % and 1.4 %, respectively. These declines were more pronounced in plant host specialists and in dark coloured species. In contrast, species richness increased by ca. 1.5 % annually in the coppiced forest, while no significant trends were found in the high forest. In contrast to past assumptions, insect decline apparently affects also hyper diverse insect groups in forests. Since host specialists and dark coloured species were affected more heavily by the decline than other groups, habitat loss and climate change seem to be potential drivers of the observed trends. However, the positive development of species richness in the coppiced oak forest indicates that maintaining complex and diverse forest ecosystems through active management might compensate for negative trends in biodiversity. Chapter 4 features a study specifically aiming to investigate the long-term effect of deadwood enrichment as an integrative conservation strategy on saproxylic beetles and fungi in a central European beech forest at a landscape scale. A before–after control–impact design, was used to compare assemblages and gamma diversities of saproxylic organisms (beetles and fungi) in strictly protected old-growth forest areas (reserves) and previously moderately and intensively managed forest areas. Forests were sampled one year before and a decade after starting a landscape-wide strategy of dead-wood enrichment. Ten years after the start of the dead-wood enrichment, neither gamma diversities of saproxylic organisms nor species composition of beetles did reflect the previous management types anymore. However, fungal species composition still mirrored the previous management gradient. The results demonstrated that intentional enrichment of dead wood at the landscape scale can effectively restore communities of saproxylic organisms and may thus be a suitable strategy in addition to permanent strict reserves in order to protect wood dependent organisms in Europe. In this thesis I showed, that in contrast to what was assumed and partly reported so far, also water beetles in lentic water bodies and macro moths in forests decreased in species richness, abundance and biomass during the last three to four decades. In line with earlier studies, especially dark coloured species and specialists decreased more than light-coloured species and generalists. The reasons for these declines could partly be attributed to natural processes and pollution and possibly to climate change. However, further studies, especially experimental ones, will be needed to achieve a better understanding of the reasons for insect decline. Furthermore, analyses of time series data should be interpreted cautiously especially if the number of sampling years is smaller than ten years. In addition, validation techniques such as left- and right- censoring and cross validation should be used in order to proof the robustness of the analyses. However, the lack of knowledge, we are still facing today, should not prevent scientists and practitioners from applying conservation measures. In order to prove the effectiveness of such measures, long-term monitoring is crucial. Such control of success is essential for evidence based and thus adapted conservation strategies of threatened organisms. / Veränderungen und Entwicklung sind grundlegende Prinzipien in Biozönosen und können eine Vielzahl von ökologischen Prozessen beeinflussen. In Insektengemeinschaften stellen Veränderungen in der Phänologie und Dichte, Veränderungen des Artenreichtums und der Artenzusammensetzung sowie die Wechselwirkungen zwischen diesen, die wichtigsten Makroprozesse dar. Klimawandel und andere Faktoren wie der Verlust von Lebensräumen oder deren Qualitätsverschlechterung beeinflussen diese Prozesse jedoch und führen zu Veränderungen und allgemeinen Rückgängen der Biodiversität. Auch wenn die Erkenntnisse zum „Insektensterben“ in Mitteleuropa in den letzten Jahrzehnten zugenommen haben, gibt es erhebliche Wissenslücken über die Entwicklung von Insektengemeinschaften in bestimmten Lebensräumen und Taxa. Beispielsweise ist die Entwicklung von Insektengemeinschaften in kleinen, stehenden Gewässern und in Wäldern wenig erforscht. Darüber hinaus werden die Veränderungen innerhalb von Habitaten und Taxa zusätzlich durch bestimmte Merkmale, wie Wirts- oder Nahrungsspezialisierung, beeinflusst. Um diese verschiedenen Einflüsse auseinanderhalten zu können und das Wissen über die allgemeine Langzeitentwicklung von Insektengemeinschaften zu vergrößern, sind umfassende Langzeitstudien erforderlich. Darüber hinaus sollten auch die langfristigen Auswirkungen von Naturschutzstrategien über lange Zeiträume evaluiert werden, um auf wissenschaftlicher Grundlage entscheiden zu können, welche Strategien zur Förderung bedrohter Taxa wirksam sind. Daher befasst sich diese Arbeit neben der Entwicklung von Wasserkäfer- und Großschmetterlingsgemeinschaften über mehrere Jahrzehnte auch mit den Auswirkungen einer integrativen Naturschutzmaßnahme auf xylobionte Käfer und Pilze. In Kapitel 2 stelle ich eine Studie über die Entwicklung von Wasserkäfergemeinschaften (Dytiscidae, Haliplidae, Noteridae) in 33 Gewässern Süddeutschlands von 1991 bis 2018 vor. Die zeitstandardisierte Erfassung pro Wasserkörper erfolgte in drei Zeiträumen: zwischen 1991 und 1995, 2007 und 2008 sowie 2017 und 2018. Die Ergebnisse zeigten einen jährlichen Rückgang sowohl der Artenzahl (ca. -1%) als auch der Abundanz (ca. -2%). Darüber hinaus verschob sich die Artenzusammensetzung im Laufe der Zeit zum Teil aufgrund sich ändernder pH-Werte. Daraus lässt sich schlussfolgern, dass die erfassten Veränderungen während des 28- jährigen Untersuchungszeitraums teilweise natürliche Sukzessionsprozesse widerspiegeln. Da aber auch an moorige Gewässer gebundene Käferarten deutlich abgenommen haben, ist es wahrscheinlich, dass die Wasserkäfer Süddeutschlands auch durch Faktoren wie Austrocknung, erhöhten Stickstoffeintrag und/oder Mineralisierung sowie durch den Verlust spezifischer Lebensräume bedroht sind. Aufgrund dieser Entwicklungen ist es empfehlenswert, auf Landschaftsebene auf die ständige Schaffung neuer Gewässer und den besonderen Schutz von Moorgewässern zu setzen, um Wasserkäfergemeinschaften erfolgreich schützen zu können. In Kapitel 3 präsentiere ich eine Analyse der Diversitäts-, Abundanz- und Biomassenentwicklung von nachtaktiven Großschmetterlingen über vier Jahrzehnte in Wäldern Süddeutschlands. Neben einem bayernweiten Datensatz, der alle typischen Waldtypen der gemäßigten Zone Mitteleuropas beinhaltet, wurden zwei lokale, besonders regelmäßig besammelte Gebiete getrennt analysiert. In diesen Gebieten werden die Eichenwälder als Hoch- bzw. als Mittelwald bewirtschaftet. Bayernweit wiesen Artenreichtum, Abundanz und Biomasse jährliche Rückgänge von ca. 1 %, 1,3 % bzw. 1,4 % auf. Diese Rückgänge waren bei Wirtspflanzenspezialisten und bei dunkel gefärbten Arten besonders stark ausgeprägt. Im Gegensatz dazu nahm der Artenreichtum im Mittelwald jährlich um ca. 1,5 % zu, während im Hochwald keine signifikanten Trends festgestellt werden konnten. Im Gegensatz zu früheren Annahmen betrifft der Insektenrückgang offenbar auch hyperdiverse Insektengruppen im Wald. Da Wirtspflanzenspezialisten und dunkel gefärbte Arten vom Rückgang stärker betroffen waren als andere, scheinen Lebensraumverlust und Klimawandel potentielle Treiber der beobachteten Trends zu sein. Die positive Entwicklung des Artenreichtums im Mittelwald zeigt jedoch, dass der Erhalt komplexer und vielfältiger Waldökosysteme durch aktives Management, negative Biodiversitätstrends zum Teil kompensieren könnte. Kapitel 4 enthält eine Studie, die die Langzeitwirkung von Totholzanreicherung als integrative Naturschutzmaßnahme auf xylobionte Käfer und Pilze in einem mitteleuropäischen Buchenwald auf der Landschaftsebene untersucht. Dabei wurde die Gamma-Diversität und die Artenzusammensetzung dieser beiden Gruppen anhand einer Vorher-Nachher Untersuchung mit Kontrollflächen (Naturwaldreservate) untersucht. Die bewirtschafteten Flächen wurden weiterhin in zuvor mäßig und intensiv bewirtschaftete Flächen eingeteilt. Die Wälder wurden ein Jahr vor und ein Jahrzehnt nach Beginn einer Totholzanreicherungsstrategie auf Landschaftsebene beprobt. Zehn Jahre nach Beginn der Totholzanreicherung spiegelten weder die Gamma-Diversität der xylobionten Organismen noch die Artenzusammensetzung der Käfer die früheren Bewirtschaftungstypen wider, und wiesen keine Unterschiede mehr zu den Naturwaldreservaten auf. Die Pilzartenzusammensetzung spiegelte jedoch noch immer den früheren Bewirtschaftungsgradienten wider. Die Ergebnisse zeigen, dass Totholzanreicherung auf Landschaftsebene positive Effekte auf xylobionte Artengemeinschaften haben kann. Somit stellt Totholzanreicherung eine Naturschutzmaßnahme dar, die zusätzlich zu permanenten Schutzgebieten, eine Grundlage schaffen kann, um holzabhängige Organismen in Europa zu schützen. In dieser Arbeit habe ich gezeigt, dass im Gegensatz zu dem, was bisher angenommen und zum Teil berichtet wurde, auch Wasserkäfer in stehenden Gewässern und nachtaktive Großschmetterlingen in Wäldern in den letzten drei bis vier Jahrzehnten an Artenreichtum, Abundanz und Biomasse abgenommen haben. In Übereinstimmung mit anderen Studien nahmen vor allem dunkel gefärbte Arten und Spezialisten stärker ab als hell gefärbte Arten und Generalisten. Die Gründe für diese Rückgänge konnten zum Teil auf natürliche Prozesse, Umweltverschmutzung und möglicherweise auf den Klimawandel zurückgeführt werden. Es sind jedoch weitere Studien, insbesondere experimentelle, erforderlich, um die Gründe für das „Insektensterben“ besser zu verstehen. Darüber hinaus sollten Zeitreihendaten mit Vorsicht interpretiert werden, insbesondere wenn die Anzahl der besammelten Jahre kleiner als zehn Jahre ist. Darüber hinaus sollten Validierungstechniken wie Links- und Rechts-Zensierung und Kreuzvalidierung eingesetzt werden, um die Robustheit der Analysen nachzuweisen. Der Mangel an Wissen, mit dem wir heute noch konfrontiert sind, sollte Wissenschaftler und Praktiker jedoch nicht davon abhalten, Naturschutzmaßnahmen anzuwenden. Um die Wirksamkeit solcher Maßnahmen nachzuweisen, ist eine langfristige Überprüfung von entscheidender Bedeutung. Solche Erfolgskontrollen sind für evidenzbasierte und damit angepasste Erhaltungsstrategien bedrohter Organismen unerlässlich.

Why has teachers’ classroom work remained relatively stable despite an enormous amount of change in educational policy? In 1998 the national Department of Education of South Africa introduced a new policy on assessment to complement its new curriculum policy introduced in 1997. With its emphasis on performance–based outcomes, the assessment policy constituted a decisive and significant break from the past assessment policy. This research focuses on the implementation of the new assessment policy by classroom teachers. The study is guided by the following three research questions: 1: What are teacher understandings and beliefs with regard to assessment policy? 2: In the context of official policy, how do teachers practice assessment in their classrooms? 3: How can the continuities and the discontinuities between official policy on assessment and teachers’ assessment practice be explained? After reviewing the literature on policy implementation, the study articulated a broader conceptual framework drawing on the construct of ‘deep change’. This perspective supplements rather than supplants dominant approaches to policy implementation. The ‘deep change’ framework suggests a more incisive approach to understanding the relationship between policy and practice. This study presents and tests three propositions about change, namely: Proposition One: That teachers may not have a deep, sophisticated understanding of a new assessment policy even if there is evidence of strong rhetorical commitment to the policy. Proposition Two: That teachers may not be able to reconcile their own assessment beliefs and capacities with the stated goals of a new assessment policy. Proposition Three: That teachers may find traditional assessment practices (that is, examinations and testing) to hold greater efficacy in the classroom than the alternatives required by a new assessment policy. A case study approach was undertaken with two Grade 8 science teachers from two different contexts, one from an under-resourced township school, and the other from a well-resourced urban school. Using evidence from questionnaires, free-writing schedules, extensive pre-lesson and post-lesson interviews, prolonged non-participant classroom observations, teacher records and documents, and student records and examinations, the study found that the two teachers had a surface understanding of the new assessment policy; the teacher from the well-resourced, urban school was able to implement some of the new assessment methods, while the teacher from the under-resourced, township school did not implement any of the new methods of assessment required by the new assessment policy; both teachers were unable to reconcile their own assessment beliefs and capacities with the stated goals of a new assessment policy; and both teachers found the traditional assessment practices (that is, examinations and testing) to hold greater efficacy in the classroom than the alternatives required by a new assessment policy. In other words, the study found that teachers did not have a deep understanding of the assessment policy and did not change their assessment practices deeply as required by the assessment policy. The study argues that educational policies will do little to achieve deep changes in teachers’ pedagogical practices without concurrent attention to a strong theory of change. The study concludes with implications for teacher learning, professional development of teachers, theory and research. / Thesis (PhD (Education Management and Policy Studies))--University of Pretoria, 2004. / Education Management and Policy Studies / unrestricted

For much of human existence identity was ascribed based on the group one was born into. In such cultures all aspects of social life were fused into one incontrovertible identity: group identity. However as modern mindsets took root individuals began to shift the foundation of meaning and identity away from the fixed focal point of the group to one of personal preference. In response to this modern trend many groups began to intensify the maintenance of group identity as paramount in the lives of group members. Hammond and Warner (1993) assert that a powerful mechanism for sustaining group identity is a pattern known as ethnic fusion, where the boundaries of the religion and the ethnicity are essentially nonexistent. Mormonism was identified as a prime example of ethnic fusion. This study seeks to understand the role that religion and ethnicity play in identity creation for individuals raised within an ethnic fusion pattern but who, at some point, experience a break with the culture. In addition to being a case study, the current study seeks to understand the historical development of ethnic identity from early conceptualization to contemporary use. To accomplish this, this study draws on a wide range of literature and approaches that have been undertaken in different fields. Specifically, this is a case study that examines the lives of individuals raised in Utah as participating members of The Church of Jesus Christ of Latter-day Saints (commonly known as “LDS” or “Mormons”) who at some point opted to remain in Utah and no longer participate with the dominant religious aspect of the culture. Such individuals are commonly referred to as “Jack Mormons,” a term which, in the contemporary usage, is a derogatory label for those who are perceived as lax in their practices of Mormonism. This study will show that religious and ethnic identity exist along a spectrum that can be described as thick – indicating high adherence to the orthodox beliefs and practices – and thin – indicating low levels of orthodoxy, and “Jack Mormons” will help to illustrate specific points along this spectrum.

No / FP7

No / FP7

Indiana University-Purdue University Indianapolis (IUPUI) / Water is fundamental for plant growth, and vegetation response to water availability influences water, carbon, and energy exchanges between land and atmosphere. Vegetation plays the most active role in water and carbon cycle of various ecosystems. Therefore, comprehensive evaluation of drought impact on vegetation productivity will play a critical role for better understanding the global water cycle under future climate conditions. In-situ meteorological measurements and the eddy covariance flux tower network, which provide meteorological data, and estimates of ecosystem productivity and respiration are remarkable tools to assess the impacts of drought on ecosystem carbon and water cycles. In regions with limited in-situ observations, remote sensing can be a very useful tool to monitor ecosystem drought status since it provides continuous observations of relevant variables linked to ecosystem function and the hydrologic cycle. However, the detailed understanding of ecosystem responses to drought is still lacking and it is challenging to quantify the impacts of drought on ecosystem carbon balance and several factors hinder our explicit understanding of the complex drought impacts. This dissertation addressed drought monitoring, ecosystem drought responses, trends of vegetation water constraint based on in-situ metrological observations, flux tower and multi-sensor remote sensing observations. This dissertation first developed a new integrated drought index applicable across diverse climate regions based on in-situ meteorological observations and multi-sensor remote sensing data, and another integrated drought index applicable across diverse climate regions only based on multi-sensor remote sensing data. The dissertation also evaluated the applicability of new satellite dataset (e.g., solar induced fluorescence, SIF) for responding to meteorological drought. Results show that satellite SIF data could have the potential to reflect meteorological drought, but the application should be limited to dry regions. The work in this dissertation also accessed changes in water constraint on global vegetation productivity, and quantified different drought dimensions on ecosystem productivity and respiration. Results indicate that a significant increase in vegetation water constraint over the last 30 years. The results highlighted the need for a more explicit consideration of the influence of water constraints on regional and global vegetation under a warming climate.

The world is dominated by cold environments that include the poles, the deep ocean, and alpine regions. Polar algae support the aquatic food chain and are increasingly threatened by climate change. With a changing climate, ice cover is decreasing with increased temperatures, leading to changes in light availability and salinity. Using two closely related but geographically distant algal species, Chlamydomonas priscuii and Chlamydomonas malina, we examined how the heat stress responses changed depending on their culturing conditions. C. malina was isolated from the Beauford Sea in the Canadian Arctic and C. priscuii is from the permanently ice-covered Lake Bonney, Antarctica. This work looks at two questions; (1) how cold adapted algae responds to changing conditions and subsequent heat stress, and (2) what contributes to stress resistance? We found that algae show robust growth across a wide spectrum of light and salinity but have the fastest growth rates at low salinity and high light intensities. These fast-growing algae are the most susceptible to heat stress indicating liability during climate change. High salinity grown algae were more resilient when challenged by heat stress in the terms of maintaining photosynthetic efficiency, attenuated ROS production, and delayed cell death. At high salinity C. priscuii produces high levels of glycerol which for the first time in green algae has been shown to contribute to thermotolerance. Overall, this work provides insight into the stress resilience of psychrophiles, something that is especially pertinent in our age of rapid climate change.

Titel: Mellanchefen & hantering av medarbetares motstånd mot förändring Nivå: Examensarbete på grundnivå (kandidatexamen) i ämnet företagsekonomi  Författare: Elsa Berg och Alicia Bergström Handledare: Emilia Kvarnström   Datum: 2024 - Januari   Syfte: Idag driver företag ständigt förändring- och utvecklingsarbeten och med förändringar kommer ofta motståndsreaktioner. Motstånd mot förändring från medarbetare behöver bemötas och hanteras för att förändringar ska kunna fortgå i verksamheter. Tidigare forskning studerar högre chefer och företags hantering av motstånd mot förändring, men mellanchefen däremellan har blivit bortglömd. Det finns en saknad i tidigare forskning om mellanchefens unika roll i samspel med hantering av motstånd från medarbetare. Därav syftar arbetet till att undersöka mellanchefers hantering av motstånd mot förändringsarbete. Den ledande forskningsfrågan för arbetet är: Hur hanterar mellanchefer motstånd mot förändring från sina medarbetare? Metod: Arbetets studie är av kvalitativ metod som har samlats in genom semistrukturerade intervjuer, dokument och iakttagelser. Det empiriska underlaget har samlats in och presenterats tematiskt utefter arbetets förutbestämda teman under avsnittet för resultat. Därefter har det gjorts en analys, där teori och empiri länkas till varandra. Studien har studerat mellanchefer som drivit igenom en strukturell förändring praktiskt och därtill hanterat motstånd mot förändring från sina medarbetare.  Resultat och slutsats: Resultatet för arbetets studie visar att det finns återkommande val av verktyg som mellanchefer använder sig av för att hantera motstånd mot förändring från sina medarbetare. Arbetet jämför tidigare forskning som riktas till högre chefer där tre sätt att hantera motstånd är centrala: kommunikation, förebyggande förändringsbearbetning och närvarande chef. Studien finner att mellanchefer likt högre chefer använder sig av kommunikation och närvarande chef, medan förebyggande hantering endast är möjlig om mellanchefen är involverad tidigt i förändringen. Upptäckten är att mellanchefer i förhållande till högre chefer står i en beroendeställning där de själva inte beslutar om deras involverande utan det ligger i händerna på deras överställda chefer. Därtill finner studien ett nytt sätt som mellanchefer hanterar motstånd mot förändring från sina medarbetare: mellanchefen som krockkudde.  Examensarbetets bidrag: Arbetet bidrar med ökad förståelse för hur mellanchefer hanterar motstånd mot förändring från sina medarbetare. Samt att de i förhållande till högre chefer hanterar motstånd mot förändring under andra villkor, vilket styr deras val av och möjlighet till hanteringsverktyg. Detta kan dels vara värdefullt för företag som strävar efter att vinna mer kunskap om den komplicerade mellanchefsrollen eller att utveckla sina mellanchefers funktioner. Det kan även vara en vägledning för vidare forskning inom området för mellanchefer.  Förslag till fortsatt forskning: Utifrån studiens resultat föreslås vidare forskning i form av att inkludera ett större antal respondenter samt olika sorters positioner för att vinna fler infallsvinklar. Vidare skulle även en tvärsnittsstudie vara av intresse för att undersöka om utfallet skiljer sig mellan olika företag. Ett mer komplicerat men ack så intressant förslag på vidare forskning är att genomföra observationer, förslagsvis deltagande observationer som sträcker sig över en längre tid och ger möjligheten till att verkligen få inblick i hur mellanchefers faktiska hanteringen av motstånd mot förändring ser ut. Nyckelord: Middle manager, employee resistance to change, change aversion, change management och managing resistance to change. / Title: The middle manager & managing employee resistance to change Level: Bachelor's degree thesis in business administration Author: Elsa Berg och Alicia Bergström Supervisor: Emilia Kvarnström   Date: 2024 – January  Aim: Today, companies are constantly pursuing improvement and development work, and with changes often come resistance reactions. Resistance to change from employees needs to be met and managed for changes to continue in businesses. Previous research studies managers and companies' management of resistance to change, but the middle manager in between has been forgotten. There is a lack in previous research on the unique role of the middle manager in interaction with handling resistance from employees. Hence, the work aims to investigate middle managers' handling of resistance to change work. The leading research question for the work is: How do middle managers handle resistance from their employees during change work? Method: The study is of a qualitative method that has been collected through semi-structured interviews, documents and observation. The empirical basis has been collected and presented thematically according to the predetermined themes of the work under the results section. After that, an analysis has been made, where theory and empiricism are linked to each other. The study has studied middle managers who pushed through a structural change in practice and also dealt with resistance to change from their employees. Results and conclusion: The result of the study shows that there are recurring choices of tools that middle managers use to deal with resistance to change from their employees. The work compares previous research aimed at senior managers where three ways of handling resistance are central: communication, preventive change processing and present manager. The study finds that middle managers, like senior managers, use communication and a present manager, while preventive management is only possible if the middle manager is involved early in the change. The discovery is that middle managers in relation to higher managers are in a dependent position where they themselves do not decide on their involvement, but it is in the hands of their superior managers. In addition, the study finds a new way in which middle managers handle resistance to change from their employees: the middle manager as an airbag.  Contribution of the thesis: The work contributes with increased understanding of how middle managers handle resistance to change from their employees. And that, in relation to higher managers, they deal with resistance to change under other conditions, which controls their choice of and opportunity for management tools. This can be valuable for companies that strive to gain more knowledge about the complicated middle management role or to develop the functions of their middle managers. It can also be a guide for further research in the area of ​​middle managers.  Suggestions for future research: Based on the study's results and limitations, further research is suggested in the form of including a larger number of respondents and different kinds of positions to gain more angles. Furthermore, a cross-sectional study would also be of interest to investigate whether the outcome differs between different companies. A more complicated but oh so interesting proposal for further research is to carry out observations, for example participant observations that extend over a longer period of time and provide the opportunity to really gain insight into what middle managers' actual handling of resistance to change looks like.  Key words: Middle manager, employee resistance to change, change aversion, change management and managing resistance to change.

Forests provide important ecosystem services and play a dominant role in the global carbon and hydrologic cycles. These ecosystems are becoming more vulnerable to climate change-related threats such as extreme temperature and precipitation events, drought and wildfires. In addition, forest ecosystems have also undergone land use changes and a significant reduction in cover area, specifically in North America. There has been renewed realization to restore and rehabilitate forest ecosystems because they are a major carbon sink and play a key role in sequestering atmospheric carbon dioxide. In response, plantation forests are being widely established to sequester carbon, increase biodiversity, secure water resources and generate economic revenue when harvested. Forest managers employ different management practices such as thinning or retention harvesting to enhance growth, plant structural and species diversity within forest plantations, with the ultimate goal of emulating the characteristics and benefits of natural forests. However, the influence of these forest management practices on the growth, productivity and specifically water cycling in plantation forests is not well studied and reported in the literature. This experimental study investigated the effect of four different variable retention harvesting (VRH) treatments on evapotranspiration and water balance in an 83-year-old red pine (Pinus resinosa) plantation forest in the Great Lakes region in Canada. These VRH treatments included 55% aggregated crown retention (55A), 55% dispersed crown retention (55D), 33% aggregated crown retention (33A), 33% dispersed crown retention (33D) and unharvested control (CN) plot. Tree-level experimental work was conducted in the control plot and showed that most of the water transport (65%) occurred in the outermost sapwood, while only 26% and 9% of water was transported in the middle and innermost depths of sapwood, respectively. These results help to avoid overestimation of transpiration, which may cause large uncertainties in water budgets in pine forests. Study results further showed that the 55D treatment had the highest tree-level transpiration followed by 33D, 55A, 33A and CN plots. During periods of low precipitation, vapor pressure deficit (VPD) was the main driver or control on transpiration in VRH treatments. However, transpiration was more closely coupled with photosynthetically active radiation (PAR) in the control plot. Moreover, the 55D treatment resulted in on average 58% of total water loss from canopy as transpiration and 42% from the understory and ground surface as evapotranspiration. These findings suggest that dispersed or distributed retention of 55% basal area (55D) provides the optimal environmental conditions for forest growth with reduced competition of trees for water as shown by enhanced transpiration. This study will help researchers, forest managers and decision-makers to improve their understanding of thinning impacts on water and carbon exchanges in forest ecosystems and select and adopt viable forest management practices to enhance their carbon sequestration capabilities, water use efficiency and resilience to climate change. / Thesis / Doctor of Philosophy (PhD)