@article{HeimSchroederEccardetal.2016, author = {Heim, Olga and Schr{\"o}der, Assja and Eccard, Jana and Jung, Kirsten and Voigt, Christian C.}, title = {Seasonal activity patterns of European bats above intensively used farmland}, series = {The astrophysical journal : an international review of spectroscopy and astronomical physics ; Part 2, Letters}, volume = {233}, journal = {The astrophysical journal : an international review of spectroscopy and astronomical physics ; Part 2, Letters}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0167-8809}, doi = {10.1016/j.agee.2016.09.002}, pages = {130 -- 139}, year = {2016}, abstract = {Bats are top insect predators on farmland, yet they suffer from intensive farmland management. Here, we evaluated the seasonal activity patterns of European bats above large, arable fields and compared these patterns between ecologically distinct bat species. Using repeated passive acoustic monitoring on a total of 93 arable fields in 2 years in Brandenburg, Germany, we surveyed the activity of different bat species between early spring and autumn. We then used generalized additive mixed models to describe and compare the seasonal bat activity patterns between bat categories, which were build based on the affiliation to a functional group and migratory class, while controlling for local weather conditions. In general, the affiliation to a bat category in interaction with the season in addition to cloud cover and ambient air temperature explained a major part of bat activity. The season was also an important factor for the foraging activity of open-space specialists such as Nyctalus noctula but showed only a weak effect on species such as Pipistreilus nathusii which are adapted to edge-space habitats. Across the seasons, habitat use intensity was high during the period of swarming and migration and low during the energy demanding period of lactation. Seasonal patterns in foraging activity showed that open-space specialists foraged more intensively above agricultural fields during the migration period, while edge-space specialists foraged also during the energy demanding period of lactation. We conclude that the significant seasonal fluctuations in bat activity and significant differences between bat categories in open agricultural landscapes should be taken into consideration when designing monitoring schemes and management plans for bat species in regions dominated by agriculture. Also, management plans should be directed to improve the conditions on arable land especially for bat species which would be classified as narrow-space foragers such as Myotis species. (C) 2016 Elsevier B.V. All rights reserved.}, language = {en} } @article{Jung2021, author = {Jung, Jana}, title = {Does youth matter?}, series = {Longitudinal and life course studies : LLCS ; international journal / Society for Longitudinal and Life Course Studies}, volume = {12}, journal = {Longitudinal and life course studies : LLCS ; international journal / Society for Longitudinal and Life Course Studies}, number = {2}, publisher = {Longview}, address = {London}, issn = {1757-9597}, doi = {10.1332/175795920X15980339169308}, pages = {201 -- 225}, year = {2021}, abstract = {Previous research has mainly concentrated on the study of certain transitions and the influence of economic and socio-structural factors on partnership status. From a life course perspective, it remains unclear how factors anchored in youth are related to the diversity of partnership biographies. Arguing that individuals act and behave based on prior experiences and resources, I analyse how personal and social resources as well as socio-demographic characteristics influence the turbulence of longitudinal partnership trajectories. Using a longitudinal dataset from the German LifE Study, I examine partnership histories from the ages 16 to 45. The results suggest that in addition to the influence of an individual's socio-demographic placement (for example, religious commitment and regional living conditions), personal and social resources anchored in youth also have a long-term effect on the diversity of partnership trajectories. This article shows that women are influenced by their attitudes towards marriage and family, while men are influenced by their attitudes towards their careers.}, language = {en} } @misc{HeimLorenzKramerSchadtetal.2017, author = {Heim, Olga and Lorenz, Lukas and Kramer-Schadt, Stephanie and Jung, Kirsten and Voigt, Christian C. and Eccard, Jana}, title = {Landscape and scale-dependent spatial niches of bats foraging above intensively used arable fields}, series = {Postprints der Universit{\"a}t Potsdam : Mathematisch Naturwissenschaftliche Reihe}, journal = {Postprints der Universit{\"a}t Potsdam : Mathematisch Naturwissenschaftliche Reihe}, number = {826}, doi = {10.25932/publishup-42816}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-428166}, pages = {17}, year = {2017}, abstract = {Introduction Bats are threatened by agricultural intensification, and although bat ecology in agricultural landscapes is in the focus of current research, the effects of interacting spatiotemporal factors on species-specific bat activity above farmland remain understudied. Our aim was to identify spatiotemporal factors and their interactions relevant for the activity of bat species above conventionally managed arable fields. Methods We repeatedly monitored relative bat activity above open arable fields in Germany using acoustic monitoring. We used site-related biotic and abiotic factors and landscape characteristics across five spatial scales, their combinations, and interactions to identify those factors which best explain variation in bat activity. Results Numerous interactions between landscape characteristics and the insect abundance affected bat activity above fields. For instance, Pipistrellus pipistrellus became more active with increasing insect abundance, but only above fields with a low proportion of woody vegetation cover in the surroundings. Additionally, the level of bat activity in summer depended on landscape characteristics. For example, the activity of Pipistrellus nathusii was relatively low in summer above fields that were surrounded by vegetation patches with a high degree of edge complexity (e.g., hedgerow). However, the activity remained at a relatively high level and did not differ between seasons above fields that were surrounded by vegetation patches with a low degree of edge complexity (e.g., roundly shaped forest patch). Conclusions Our results revealed that landscape characteristics and their interactions with insect abundance affected bat activity above conventionally managed fields and highlighted the opportunistic foraging behavior of bats. To improve the conditions for bats in agricultural landscapes, we recommend re-establishing landscape heterogeneity to protect aquatic habitats and to increase arthropod availability.}, language = {en} } @article{HeimLenskiSchulzeetal.2017, author = {Heim, Olga and Lenski, Johannes and Schulze, Jelena and Jung, Kirsten and Kramer-Schadt, Stephanie and Eccard, Jana and Voigt, Christian C.}, title = {The relevance of vegetation structures and small water bodies for bats foraging above farmland}, series = {Basic and applied ecology : Journal of the Gesellschaft f{\"u}r {\"O}kologie}, volume = {27}, journal = {Basic and applied ecology : Journal of the Gesellschaft f{\"u}r {\"O}kologie}, publisher = {Elsevier GMBH}, address = {M{\"u}nchen}, issn = {1439-1791}, doi = {10.1016/j.baae.2017.12.001}, pages = {9 -- 19}, year = {2017}, abstract = {Bats are known to forage and commute close to vegetation structures when moving across the agricultural matrix, but the role of isolated landscape elements in arable fields for bat activity is unknown. Therefore, we investigated the influence of small isolated ponds which lie within arable fields close to vegetation structures on the flight and foraging activity of bats. Additionally, we compared species-specific activity measures between forest edges and linear structures such as hedgerows. We repeatedly recorded bat activity using passive acoustic monitoring along 20 transects extending from the vegetation edge up to 200 m into the arable field (hereafter: edge-field interface) with a small pond present at five transects per edge type (linear vs. forest). Using generalized linear mixed effect models, we analyzed the effects of edge type, pond presence and the season on species-specific flight and foraging activity within the edge-field interface. We found a higher flight activity of Nyctalus noctula and Pipistrellus pygmaeus above the arable field when a pond was present. Furthermore, Pipistrellus nathusii and Pipistrellus pipistrellus foraged more frequently at forest edges than at linear structures (e.g. hedgerows). Additionally, we found three major patterns of seasonal variation in the activity of bats along the edge-field interface. This study highlights the species-specific and dynamic use of forest and hedgerow or tree line edges by bats and their importance for different bat species in the agricultural landscape. Further, additional landscape elements such as small isolated ponds within arable fields might support the activity of bats above the open agricultural landscape, thereby facilitating agroecosystem functioning. Therefore, additional landscape elements within managed areas should be restored and protected against the conversion into arable land and better linked to surrounding landscape elements in order to efficiently support bats within the agroecosystem.}, language = {en} } @phdthesis{Jung2022, author = {Jung, Jana}, title = {Does youth matter?}, pages = {176}, year = {2022}, abstract = {This dissertation is a compilation of publications and submitted publication manuscripts that seek to improve the understanding of modern partnership trajectories. Romantic relationships constitute one of the most important dimensions in a person's life. They serve to satisfy social and emotional needs (Arr{\´a}nz Becker, 2008) and have an impact on various other dimensions of life. Since the 1970s, partnership formation has been characterized by increased heterogeneity, has become less ordered and much more diverse in terms of living arrangements and the number of unions across the life course (Helske et al, 2015; Ross et al, 2009). This dissertation argues that while partnerships have become more unstable, the need for attachment and the importance of relationship have remained high, if not increased, as evidenced by the prevalence of couple relationships that have remained quite stable (Eckhardt, 2015). The life course perspective (Elder, 1994; Elder et al., 2004; Mayer, 2009) offers an appropriate framework for the understanding of partnership formations throughout the life course. This perspective stresses the path dependency of the life course as well as the interdependencies of life domains (Bernardi et al., 2019). Thus, it can be argued that conditions, resources, and experiences in youth have a substantial influence on later life course outcomes. Given the increasing heterogeneity of partnership trajectories, research to understand partnership processes cannot be based only on single events (e.g., marriage or divorce) or life stages, but must be explored in a dynamic context and over a longer period of time. In sum, this thesis argues that partnership trajectories have to be considered from a holistic perspective. Not only single transitions or events are useful to describe modern partnership histories adequately, but rather the whole process. Additionally, as partnership trajectories are linked to various outcomes (e.g., economics, health, effects on children), it is therefore highly relevant to improve our understanding of partnership dynamics and their determinants and consequences. Findings in this field of research contribute to a better understanding of how childhood and youth are of prospective importance for the later partnership trajectories and whether there are any long-term effects of the conditions and resources formed and stabilized in youth, which then help to understand and explain partnership dynamics. Thus, the interest of this thesis lies in the longitudinal description and prediction of the dynamics of partnership trajectories in light of the individual resources formed and stabilized in youth, as well as in the investigation of the consequences of different partnership trajectory patterns on individual well-being. For these objectives, a high demand on the data is required, as prospective data at the beginning of the partnership biography are needed, as well as data on current life dimensions and the detailed partnership history. The German LifE Study provides this particular data structure as it examines life courses of more than 1,300 individuals from adolescence to middle adulthood. With regard to the overall aim of this dissertation, the main conclusion is that early life conditions, experiences, and resources influence the dynamics of individual partnership trajectories. The results illustrate that youth matters and that characteristics and resources anchored in youth influence the timing of early status passages, which sets individuals on specific life paths. However, in addition to personal and social resources, partnership trajectories were also significantly influenced by individuals' sociodemographic placement. Additionally, individual resources are also linked to the overall turbulence or stability of partnership trajectories. This overall dynamic, which is reflected in different partnership patterns, influences individual well-being, with stability being associated with greater satisfaction, and instability (women), or permanent singlehood (men), having a negative impact on well-being. My analyses contribute to life course research by examining path dependency against the background of various individual factors (socio-structural and psychological characteristics) to model decision-making processes in partnerships in more detail. They do so by including also non-cohabitational union types in the analyses, by accounting for pre-trajectory life conditions and resources, and, most importantly, by modeling the partnership trajectory in a holistic and dynamic perspective, applying this perspective to appropriate and modern statistical methods on a unique dataset.}, language = {en} } @misc{HornConradSeipLiebigetal.2023, author = {Horn-Conrad, Antje and Seip, Juliane and Liebig, Ferenc and Engel, Silke and Schuster, Stefanie and Jung, Karina and Aust, Sarah-Madeleine and Kampe, Heike and Lentz, Christine and Mikulla, Stefanie and Zimmermann, Matthias and Agrofylax, Luisa and Scholz, Jana and Schmidt, Debby}, title = {Portal Transfer}, number = {2023}, issn = {2747-6898}, doi = {10.25932/publishup-61365}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-613650}, pages = {78}, year = {2023}, abstract = {Liebe Leserinnen und Leser, kein Nachrichtentag vergeht, an dem nicht die Expertise aus der Wissenschaft gefragt ist: Ob zum russischen Angriffskrieg in der Ukraine, zur UNKlimakonferenz in {\"A}gypten, zur Flutkatastrophe in Pakistan, zum D{\"u}rresommer, zur Energiekrise, selbst zur umstrittenen Fußballweltmeisterschaft in Katar standen und stehen Expertinnen und Experten in den Medien Rede und Antwort. Auch aus der Universit{\"a}t Potsdam. Wir haben sie gefragt, wie sie damit umgehen, wie es ihnen gelingt, aus der laufenden Forschung heraus aktuelle Probleme zu bewerten. Und was davon bleibt, wenn das {\"o}ffentliche Interesse abebbt. F{\"u}r die Potsdamer Politik- und Verwaltungswissenschaftlerin Sabine Kuhlmann besteht die Kunst darin, „außerhalb der Krise Ideen und L{\"o}sungsans{\"a}tze zu verstetigen und sie tats{\"a}chlich in die Praxis umzusetzen". In unserem Alumni- und Transfermagazin berichten wir davon, was und wie die Universit{\"a}t Potsdam dazu beitr{\"a}gt. Wir erz{\"a}hlen, wie Erfindungen zu Innovationen in der Wirtschaft werden und sich Start-ups auf den Weg machen, ihr Produkt selbst zu vermarkten. Das Spektrum reicht von Meeresfr{\"u}chten auf Pflanzenbasis bis zu einer App, mit der sich Fr{\"u}hformen der Demenz erkennen lassen. Neben neuen Technologien kommt es aber vor allem darauf an, das an der Universit{\"a}t erzeugte Wissen in die Praxis zu transferieren. Deshalb stellen wir ein Programm zur Bek{\"a}mpfung von Hassrede in der Schule vor oder auch eine Klettertherapie zur Behandlung von Skoliose. Und wir zeigen, wie eine Studie zur sportlichen Leistungskraft von Kindern helfen kann, den Sportunterricht zu verbessern. Den gr{\"o}ßten Teil des an der Universit{\"a}t produzierten Wissens tragen die Studierenden in die Welt, wenn sie nach ihrem Abschluss als Musiklehrerin in einer Schule arbeiten oder als Software-Ingenieur im eigenen Unternehmen, als Geologin nach Seltenen Erden sch{\"u}rfen, als {\"O}kologe ausgelaugte B{\"o}den wieder fruchtbar machen oder als Politikerin ein Ministerium leiten. Sie alle kommen in diesem Magazin zu Wort. Oder in unserem neuen Podcast „Listen.UP", in dem Studierende, Forschende und Alumni von ihren Transferprojekten erz{\"a}hlen. Von der Gr{\"u}nderin Ulrike B{\"o}ttcher erf{\"a}hrt man dort zum Beispiel, wie sie mit Schnallen, {\"O}sen und Kn{\"o}pfen aus Bio- Materialien die Modeindustrie in diesem Bereich nachhaltig ver{\"a}ndern will. Nachzulesen ist das auch in diesem Heft. Immer dort, wo das „Listen. UP"-Logo erscheint, lohnt es, zus{\"a}tzlich in den Podcast hineinzuh{\"o}ren.}, language = {de} } @misc{ZimmermannScholzRaboldtetal.2021, author = {Zimmermann, Matthias and Scholz, Jana and Raboldt, Michaela and Bossier-Steuerwald, Sandy and Horn-Conrad, Antje and Kampe, Heike and Mikulla, Stefanie and Pchalek, Magda and Reinecke, Robert and Jung, Karina}, title = {Portal = Familie und Beruf}, organization = {Universit{\"a}t Potsdam, Referat f{\"u}r Presse- und {\"O}ffentlichkeitsarbeit}, issn = {1618-6893}, doi = {10.25932/publishup-52463}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-524632}, pages = {58}, year = {2021}, abstract = {Als ich f{\"u}r die vergangene Ausgabe der Portal an dem Artikel „Mein Arbeitstag im Bermudadreieck - zwischen Homeoffice, Homeschooling und Homekita" schrieb, diskutierten wir im Redaktionsteam, ob der ungesch{\"o}nte Bericht eines privaten Alltags {\"u}berhaupt in ein Universit{\"a}tsmagazin passt. Ich {\"u}berlegte zudem, ob eine Publikation mich als Arbeitnehmerin wie Privatperson angreifbar machen w{\"u}rde. Doch nach dem Erscheinen der Portal 1/2021 erreichten uns in der Pressestelle viele Danksagungen und Ermunterungen aus ganz unterschiedlichen Bereichen der Universit{\"a}t. Das Thema schien einen Nerv getroffen zu haben, was uns veranlasste, eine komplette Ausgabe zu diesem Thema zu produzieren. So halten Sie nun die Portal „Familie und Beruf" in den H{\"a}nden! Familie beschr{\"a}nkt sich im Jahr 2021 dabei nicht auf „Mutter, Vater, Kind", sondern manifestiert sich vielmehr in großer Diversit{\"a}t. Wir haben mit Menschen gesprochen, die in gleichgeschlechtlichen Partnerschaften leben, die Kinder adoptiert haben oder die ihr Haustier als Familienmitglied lieben; mit Alleinerziehenden genauso wie mit Paaren, die traumatisierte Pflegekinder großziehen. Dieses Heft zeigt eine Vielfalt unserer Kolleginnen und Kollegen, unserer Studierenden und macht deutlich: Familie ist bunt. Unterm Strich k{\"o}nnen wir festhalten, dass heute viel Flexibilit{\"a}t von uns verlangt wird - daheim wie im B{\"u}ro, H{\"o}rsaal oder Labor. Die Herausforderung ist und bleibt kontinuierlich: Verschiedene Lebensbereiche m{\"u}ssen in wechselnden Lebensphasen unter einen Hut gebracht werden. Wenn diese Portal vor Ihnen liegt, werde ich aufgrund einer befristeten Anstellung nicht mehr Teil der Uni Potsdam sein. Daf{\"u}r ist Dr. Jana Scholz aus ihrer Elternzeit zur{\"u}ckgekehrt. Was mich mit ihr - und mutmaßlich auch mit Ihnen als Leserinnen und Leser - doch bleibend verbindet, ist das Bestreben, Familie und Beruf in Einklang zu bringen. Alles Gute! (Sandy Bossier-Steuerwald) Liebe Leserinnen und Leser, es bleibt nicht viel zu erg{\"a}nzen. Außer: Falls Sie nach dem Lesen dieser Ausgabe den Eindruck haben sollten, dass Familie vor allem herausfordernd und kr{\"a}ftezehrend ist - dann haben wir uns missverstanden. Dem ist nat{\"u}rlich nicht so! Familie ist auch N{\"a}he, Zusammenhalt, Spaß, Humor und vieles mehr. An den Herausforderungen, die sie an uns und unseren Beruf stellt, k{\"o}nnen wir wachsen. Und dies gelingt besonders, wenn wir ein Netz von Freunden, Kolleginnen und Vorgesetzen haben, das uns dabei unterst{\"u}tzt. Wie immer bietet die Portal {\"u}ber den Titel hinaus einen bunten Strauß an Geschichten: von magnetischen Kunstwerken, mit denen Studierende die Stadt versch{\"o}nern, {\"u}ber eine angehende Rabbinerin, die Feminismus in die Gemeinden bringen will, bis zu den urzeitlichen sizilianischen Zwergelefanten, die {\"u}ber Jahrtausende schrumpften, bis sie vor 19.000 Jahren ganz verschwanden. Ich w{\"u}nsche Ihnen viel Vergn{\"u}gen beim Lesen! (Dr. Jana Scholz)}, language = {de} } @article{Jung2023, author = {Jung, Jana}, title = {Partnership trajectories and their consequences over the life course}, series = {Advances in life course research}, volume = {55}, journal = {Advances in life course research}, publisher = {Elsevier}, address = {Oxford}, issn = {1569-4909}, doi = {10.1016/j.alcr.2022.100525}, pages = {18}, year = {2023}, abstract = {Objective: Following a life course perspective, this study examines the link between partnership trajectories and three dimensions of psychological well-being: psychological health, overall sense of self-worth and quality of life. Background: Assuming that life outcomes are the result of prior decisions, experiences and events, partnership histories can be seen as a resource for psychological well-being. Furthermore, advantages or disadvantages from living with or without a partner should accumulate over time. While previous cross-sectional research has mainly focused on the influence of partnership status or a status change on well-being, prior longitudinal studies could not control for reverse causality of well-being and partnership trajectories. This research addresses the question of how different patterns of partnership biographies are related to a person's well-being in middle adulthood. Selection effects of pre-trajectory well-being as well as current life conditions are also taken into account. Method: Using data from the German LifE Study, the partnership trajectories between ages of 16 and 45 are classified by sequence and cluster analysis. OLS regression is then used to examine the link between types of partnership trajectories and depression, self-esteem and overall life satisfaction at age 45. Results: For women, well-being declined when experiencing unstable non-cohabitational union trajectories or divorce followed by unpartnered post-marital trajectories. Men suffered most from being long-term single. The results could not be explained by selection effects of pre-trajectory well-being. Conclusion: While women seem to 'recover' from most of the negative effects of unstable partnership trajectories through a new partnership, for men it was shown that being mainly unpartnered has long-lasting effects on their psychological well-being.}, language = {en} }