The soil-dwelling, filamentous bacteria of the genus Streptomyces are renowned for their production of useful secondary metabolites including antibiotics. The work described in this thesis provides new insights on the role and regulation of antibiotic production and resistance in these bacteria.

This thesis pioneers diatom molecular identification and quantification through genome-scale methods, with four key aims: (i) reviewing DNA/RNA sequencing methods in aquatic biomonitoring to highlight their strengths and limitations;

Promotor: E. Gittenberger, Co-promotores: L.P. van Ofwegen; B.W. Hoeksema

Balsaminaceae is a diverse plant family characterized by a huge floral morphological diversity.

Promotor: Prof.dr. M. Schilthuizen

Het onderzoeksprogramma Industrial Ecology heeft als doel de ecologische transformatie naar duurzaamheid te ondersteunen van maatschappij en milieu. Het onderzoeksonderwerp is Industriële Ecologie in zijn breedste definitie, waaronder de analyse van milieusystemen en de integratie van de sociale en…

This multidisciplinary minor provides students with knowledge on how and why humans became the way they are. The minor focuses on the evolution of the species Homo sapiens from other hominin lineages and animal ancestors, and on the various factors shaping this process. Not only is human evolution of…

De tweejarige masteropleiding Industrial Ecology is een samenwerking tussen de Universiteit Leiden en de Technische Universiteit Delft De opleiding biedt een gereedschapskist voor duurzame ontwikkeling in de vorm van een systematische aanpak van door de mens veroorzaakte problemen. Hierbij worden technische,…

In this course, you will develop an understanding of evolutionary processes and their formative power. You will see how evolution has shaped biodiversity, and continuously influences our daily life.

Galaxies in the local Universe fall into two main categories of spirals and ellipticals. In this Thesis, we explore the structural evolution of galaxies into this bimodal distribution.

Studievoorlichting

Promotores: Prof.dr. A.G.G.M. Tielens, Prof.dr. L.B.F.M. Waters (UvA), Prof.dr. C. Dominik (UvA)

Promotor: S.M. Verduyn Lunel, Co-promotor: O. van Gaans

To gain more insight into the evolutionary development of orchid flowers and fruits, the orchid species Erycina pusilla was studied. The evolutionary origin of the median petaloid sepal, the callus on the labellum, and the stelidia was studied.

Sustainable energy from wind and solar is most readily available near the sea.

Promotor: Prof. dr. Arnold Tukker & Prof. dr. René Kemp (Maastricht University)

Promotores: Prof.dr. M. Franx, Prof.dr. P.G. van Dokkum (Yale University)

Electrocatalysis allows for storing electricity or converting it into chemical bonds, producing chemical building blocks and fuels using renewable resources.

The thesis is about the study of shell evolution of the Hydrocenidae of the genus Georissa. This thesis started with a general overview on the evolutionary process of animals due to ecological changes.

Promotor: Prof.dr. H.J.A. Rottgering

Filamentous Actinobacteria, such as Streptomyces, produce a plethora of chemically diverse bioactive metabolites that have found applications across medicine, agriculture and biotechnology.

Promotor: Prof.dr. P.G.L Klinkhamer, Co-promotor: K. Vrieling

We have examined sequences from the ligand-binding domain of the nicotinic acetyl choline receptor (nAChR) in 148 vertebrate species. We are in interested in this receptor because the α-neurotoxins of many venomous snakes binds to this receptor in its location at the neuromuscular junction in all ve…

One of the most important puzzles in modern astrophysics is the nature of dark matter.

The growing demand of energy indicates that global energy resources in the form of fossil fuels will not be sufficient in the future. In order to solve potential future energy problems development of a sustainable hydrogen economy is highly desirable.

Bicarbonate buffer is largely found in nature due to its ability to regulate pH variations around neutral values. As the pH changes, so does the speciation of the buffer.

Promotor: S.M. Verduyn Lunel, Co-promotor: O.W. van Gaans

Promotor: H.J.A. Rottgering, Co-Promotor: R.J. van Weeren

This thesis has shed light on some of the ways in which the local electrolyte composition can differ from the bulk and how these changes in the local reaction environment can determine the activity and/or selectivity of two important electrocatalytic reactions, namely, electrochemical CO2 reduction…

Planets are formed in disks of gas and dust around young stars.

Promotors: Prof.dr. G.R. de Snoo, Prof.dr. H. Leirs (Univ. Antwerpen)

The study of orchid flowers, fruits, and inflorescences is crucial due to the remarkable diversity of orchid species and their unique adaptations to pollinators and seed dispersers. However, our understanding of the evolution and development of these organs within the orchid family remains limited.

This thesis investigates the structural evolution and assembly of galaxies since the first few billions years after the big bang.

Het eerste internationale masterprogramma in Industrial Ecology start in september 2011. Het gaat om een twee-jarig internationaal programma dat wordt georganiseerd door: University of Graz in Oostenrijk, Chalmers University of Technology in Göteborg, Zweden, de Universiteit Leiden en de Technische…

Pulsars were first discovered in 1967 and since then the population has grown and expanded over several wavelengths.

Plants produce an astonishing variety of secondary metabolites (SMs) which are thought to play vital roles in the fitness of plants through ecological interactions.

Promotie

Promotores: G.R. de Snoo, B. Sinsin, Co-Promotor: H.H. de Iongh

The explosive radiation and diversification of the advanced snakes (superfamily Colubroidea) was associated with changes in all aspects of the shared venom system. Morphological changes included the partitioning of the mixed ancestral glands into two discrete glands devoted for production of venom ormucous…

Promotores: Prof.dr. P.M. Brakefield, Prof.dr. B.J. Zwaan (Wageningen Universiteit)

Promotor: Prof.dr. E.F. Smets

The mycorrhizal symbiosis is among the most widespread species interactions on Earth⁠. This thesis focuses on orchid mycorrhiza, a unique mycorrhizal type that has caught scientists’ attention for centuries⁠.

We developed the bitterling as a unique, well-studied model organism in the area of the evolutionary ecology of brood parasitism. The bitterling-mussel relationship, interspecific mussel host preference, and mussel gill structure are studied in detail, to help understand the developmental adaptation…

What is movements and corridors of the Bornean pygmy elephant in Sebuku forest? What is the nature of human-elephant conflict in Nunukan District in time and space? What are the diets of the Bornean elephants related to crop raiding?

Volgens mij moeten we hierheen. Hierheen! HIER! HEEN!! Je verstaanbaar maken in een stad is soms lastig. Dat geldt niet alleen voor mensen: ook vogels blijken last te hebben van het omgevingsgeluid. Eerder bewees onderzoeker Hans Slabbekoorn al dat Leidse mezen anders communiceren in de stad. Nu blijkt…

Do Ethiopian wolves change their diet and foraging strategy in the landscape under different land uses? How land use affect Afro-alpine rodent Communities? How important are Afro-alpine natural resources utilisation for local livelihoods? What is the human perception of conflict in the Afro-alpine a…

How can we quantify the density of species within a community through environmental DNA concentrations?

What is the population size/structure and distribution of tiger and leopard inside the Bardia National Park (BNP) compared with the population outside? What is the movement and home range and conflict pattern in time and space of tigers and leopards inside the BNP compared with outside? What constitutes…

De masteropleiding Industrial Ecology is in 2004 gestart met 12 studenten en is inmiddels uitgegroeid naar een opleiding met 90 studenten uit 20 verschillende landen.