Freshwater and brackish water ecosystems are arguably the most vulnerable ecosystems on earth, due to concentrated human developments in and around them. The Pontocaspian (PC) region located at the border of Europe and Asia contains a variety of brackish water ecosystems and unique inhabitants, known…

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

Plant diversity is essential for us and our planet as it sustains the stability of our ecosystems, provides vital materials and food to us and supports many ecosystem services.

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?

In deze opleiding streef je naar het beantwoorden van biologische vraagstukken in relatie tot milieu, ecologie en andere maatschappelijk relevante onderwerpen.

In his dissertation Michiel Hooykaas outlines the results of six empirical research projects focused at biodiversity awareness in the Netherlands, specifically people’s knowledge about animals.

Freshwater biodiversity has been threatened by eutrophication due to excessive nutrients in the environment. Releasing the freshwater species from such pressures requires efforts from industry and manufacturers to avoid emissions to vulnerable and high-risk regions.

This thesis focuses on the social dimensions of crane and wetland conservation in rural landscapes in Kenya, Uganda and Zimbabwe.

Does a high quality prairie restoration in an urban/agricultural landscape provide invertebrates necessary for a sustainable ecosystem?

A management strategy has been developed for field margins to reduce pesticide drift to non-target areas and to promote biodiversity on arable land. To this end, 3 and 6 m wide strips along the edges of winter wheat, sugar beet and potato crops have been left unsprayed with herbicides and insecticides…

The Vallesian, 11.1-9 Ma, was a special time in the Vallès-Penedes basin near Barcelona, where a biodiversity hotspot existed. Europe had a subtropical climate, with rhinos, forest giraffes, lions, hyenas, flying squirrels and primates.

Promotores: H.A. Udo De Haes, P.M. Brakefield

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

Tijdens zijn bezoek op 12 april 2016 is Dr. Jatna Supriatna aangesteld als gastonderzoeker bij de Faculteit der Wiskunde en Natuurwetenschappen van de Universiteit Leiden. Dr. Supriatna is een bioloog en is universitair hoofddocent bij de Opleiding Biologie van Universitas Indonesia. Zijn aanstelling…

Does roadside management in the mid-west USA increase invertebrate diversity similar to practices in Europe?

Promotors: Prof.dr. G.R. de Snoo, Prof.dr. G.A. Persoon, Prof.dr.ir. H.H. de Iongh

Promotor: E. Gittenberger, Co-promotor: B.W. Hoeksema

Promotor: Prof.dr. G.R. de Snoo

Large carnivores and humans, along with their livestock, have co-existed for thousands of years. However, human population growth and an increase in economic activities are modifying the landscape for large carnivores and their prey.

Prof.dr. Geert de Snoo is per 1 maart bij de Faculteit der Wiskunde en Natuurwetenschappen benoemd tot hoogleraar Conservation Biology. De Snoo blijft hoofd van de gelijknamige afdeling van het Institute of Environmental Sciences (CML).

Dr.ir. Willie Peijnenburg is per 1 september 2009 bij de Faculteit der Wiskunde en Natuurwetenschappen benoemd tot bijzonder hoogleraar Environmental Toxicology and Biodiversity. Het betreft een deeltijdaanstelling. Peijnenburg blijft daarnaast werkzaam bij het Laboratorium voor Ecologische Risico-beoordeling…

Does knowledge of environmental performance change farmer's behaviour?

Promotor: J.A. van Veen, Co-promotor: E.E. Kuramae

Hortus botanicus Leiden is de eerste Nederlandse tuin die een accreditatie heeft ontvangen van Botanic Gardens International (BGCI). De Conservation Practitioner Accreditation is een certificaat waarmee het beleid, de kennis & kunde en het onderwijs met betrekking tot plantenbehoud op internationaal…

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

Promotores: E. van Dijk, G.R. de Snoo. Co-promotor: H. Staats

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…

The application of nanomaterials in industrial processes and consumer products provides many societal benefits, but can also lead to the release of nanomaterials into the environment. The work in this dissertation aims to provide insights into the potential environmental impacts that may follow from…

What invertebrates live in the fields and edges? Do the populations change with landscape complexity?

What invertebrates are available to feed nestlings in an agricultural landscape of varied complexity?

Does the presence of Ring-necked parakeets negatively influence feeding and feeding behaviour of native bird species on artificial bird feeders and if so, what are possible solutions?

Het oppervlak savanne in West- en Centraal-Afrika neemt snel af, met desastreuze gevolgen voor de leeuwenpopulaties die hier hun leefgebied hebben. Zonder beschermingsmaatregelen zijn er over tien jaar in dit deel van Afrika geen leeuwen meer. Journal of Biodiversity and Conservation, 4 december 201…

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

Biodiversity enables ecosystems to thrive through the synergy of functional differences among organisms. While human well-being strongly depends on biodiversity-driven ecosystem services, human actions are also at the root of current unprecedented biodiversity declines.

Promotor: E.F. Smets, Co-promotor: T.R. van Andel

What are the main factors associated with the stranding of the two seal species? What are the factors influencing the prevalence of disease in the two species? Which human-related factors influence the populations of the two seal species?

Description of 20th century changes in the Dutch flora: Description and interpretation (1999 - 2005)