How are links between macro-invertebrate diversity and ecosystem functioning influenced by anthropogenic pressures?

What are trait-trait relationships in wetlands? To what extent the so-called leaf economics traits deviate from terrestrial ecosystems? How traits specific to wetland plant relate to plant strategies? What’s the relationship between wetland plant traits to the ecosystem functioning (e.g. productivity,…

1: What is the relative importance of alfa and beta biodiversity in polar ecosystems, and how does intraspecific variation influence this? 2: How can we use remote sensing to determine functional biodiversity (within communities) in polar ecosystems? 3: Temporal and spatial scales of functional biodiversity:…

How can ecosystem services within river catchments be quantified in spatial and temporal explicit way?

Wetland plants are distinguished from plants of other terrestrial ecosystems by their adaptations to specific habitat stresses, including waterlogged and flooding and the subsequent abundance of phytotoxic compounds.

Promotores: Prof.dr. H. van Veen & Prof.dr. W. de Boer (Wageningen University)

Promotores: J.A.van Veen, P.L.G.Klinkhamer. Co-promotor: E.E.Kuramae

While ecosystems have concrete benefits for human society, these benefits are typically overlooked in decision-making.

Developing methodes to understand the evolution of patches in natural ecosystems

Promotores: R. Cramer, A.K. Lenstra, Co-Promotor: B.M.M. de Weger

Artin L-functions associated to continuous representations of the absolute Galois group G_K of a global field K capture a lot of information about G_K as well as arithmetic properties of K.

Acidobacteria is a widely distributed phylum but their functional roles in ecosystem processes are still largely elusive.

This thesis describes our search to identify and understand possible regulatory mechanisms of integrin α6β4 in cell-matrix adhesion and intracelular signaling.

Promotores: H.W. Lenstra, A. Lucchini

Promotores: G.R. de Snoo, W.T. de Groot, Co-promotor: C.J.M. Musters

Promotor: Prof.dr. P. Stevenhagen, Co-Promotor: J.H. Evertse

Shape and biological function are tightly connected. Physical descriptions are used to connect the shape of a biological system with its function.

How can mega sand nourishments, such as the Sand Motor, be designed and managed for optimal ecosystem services provision ?

Promotor: S.J. Edixhoven, Co-promotor: K.J. Batenburg

Do sustainability values play a role in motivating people to act for biodiversity in successful projects and in successful leadership action? And how could these values be incorporated in current economic valuation methods?

Wiskunde en Natuurwetenschappen, Centrum voor Milieuwetenschappen Leiden (CML)

Promotores: Prof.dr. W.J.G.M. Peijnenburg & Dr. M.G. Vijver

If X is a locally compact Hausdorff space, then a representation of the complex C* algebra C_0(X) on a Hilbert space $H$ is given by a spectral measure that takes its values in the orthogonal projections on $H$.

Governance and Global Affairs, Sociale Wetenschappen

Assuming everywhere good reduction we generalize the class number formula of Taelman to Drinfeld modules over arbitrary coefficient rings.

Wiskunde en Natuurwetenschappen, Centrum voor Milieuwetenschappen Leiden (CML)

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…

Het onderzoek in dit proefschrift kijkt naar de rol van het locus ceuruleus - noradrenalinesysteem in verscheidene aspecten van menselijke cognitie, en de modulatie van de staat van het brein.

Hogere temperaturen leiden wereldwijd tot veranderingen in de vegetatie en de bodem van berggebieden. Een internationaal onderzoeksteam met de Leidse ecoloog Ellen Cieraad publiceerde op 25 januari in Nature over de verstoring van het ecosysteem.

Promotor: Prof.dr. H.P. Spaink, Co-promotor: Dr. B.E. Snaar

The function of TLRs in innate immunity has aroused worldwide attention soon after its discovery. Because of the broad functions of TLR2 in innate immunity, the drive for the development of TLR2-targeted vaccines or therapeutic treatments has accelerated in the last decades.

CML rapport 192

The effects of anthropogenic noise on interactions between predators and their prey are still little understood.

What are the global relationships between environmental conditions and abundance of distinct types of mycorrhizal fungi in soil and plant roots?

1) Assess the trends in supply and production status of these critical minerals and mineral products worldwide and Europe’s dependence including on intermediate products such as permanent magnets, RE based super alloys, batteries, polishing compounds, phosphors, catalysts etc. 2) Trace the entire value…

Promotor: E.F. Smets, Co-promotor: J. Geml

In this thesis, I study 1) metabolic alterations in tuberculosis related to wasting syndrome in human patients as well as in rodent and fish animal models. 2) effects of the mutation of the leptin gene on cachexia and diabetes in rodent and zebrafish animal models.

In dit onderzoek wordt hersenontwikkeling voor het eerst direct gelinkt aan sekseverschillen en schoolprestatie. De resultaten ontkrachten de mythe dat jongens achterlopen in hersenontwikkeling.

Het terugdringen van agressie is in de afgelopen jaren in toenemende mate een maatschappelijke prioriteit geworden. Agressie in de vroege kindertijd vergroot de kans op latere agressieproblemen en antisociaal gedrag.

The four possible segments A, T, C and G that link together to form DNA molecules, and with their ordering encode genetic information, are not only different in name, but also in their physical and chemical properties.

Op 7 november 2018 verdedigde Catherine Harwood haar proefschrift 'Navigating Between Principle and Pragmatism: The Roles and Functions of Atrocity-Related United Nations Commissions of Inquiry in the International Legal Order'. Het promotieonderzoek is begeleid door promotoren prof. dr. L.J. Van den…

In Nederland komt gehoorverlies voor bij 1 tot 2 op de 1000 kinderen. In ongeveer een kwart van de gevallen is de oorzaak niet bekend. De mate van gehoorverlies kent een grote variatie. In dit proefschrift worden kinderen besproken met een gehoorverlies variërend van matig (40 dB, te vergelijken met…

Hoe kunnen we onze maatschappij zo inrichten dat de wereld leefbaar blijft voor onszelf en al het andere leven om ons heen? Aan dat vraagstuk werken Leidse wetenschappers samen vanuit allerlei disciplines, van biologie tot datawetenschap en van milieueconomie tot archeologie.

What is the optimal design of sandy solutions for sustainable climate change adaption, from an ecological, biophysical and societal point of view?