527 zoekresultaten voor “evolution biodiversity” in de Publieke website
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environment in tuning electrochemical CO2 reduction reaction and H2 evolution reaction
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…
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Linking simple molecules to grain evolution across planet-forming disks
Planets are formed in disks of gas and dust around young stars.
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Evolution and development of flowers, fruits and inflorescences of Phalaenopsis and other orchid species
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.
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Some Assembly Required: The Structural Evolution and Mass Assembly of Galaxies at z
This thesis investigates the structural evolution and assembly of galaxies since the first few billions years after the big bang.
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The spin evolution of accreting and radio pulsars in binary systems
Pulsars were first discovered in 1967 and since then the population has grown and expanded over several wavelengths.
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The evolution of chemical diversity in plants : pyrrolizidine alkaloids and cytochrome P450s in Jacobaea
Plants produce an astonishing variety of secondary metabolites (SMs) which are thought to play vital roles in the fitness of plants through ecological interactions.
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Instituut Biologie Leiden
De natuur is een onuitputtelijke inspiratiebron voor de wetenschappers van het Instituut Biologie Leiden (IBL). Vanuit het streven naar fundamenteel begrip van de natuur zoeken zij naar oplossingen op het gebied van gezondheid en behoud van de biodiversiteit. Het thema van het instituut is ‘Harnessing…
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Convergent molecular evolution of toxins in the venom of advanced snakes (Colubroidea)
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…
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The evolution and plasticity of life histories upon variation in nutrition: on aging focused integrative approach
Promotores: Prof.dr. P.M. Brakefield, Prof.dr. B.J. Zwaan (Wageningen Universiteit)
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Antiquities of the rainforest: evolution of mycoheterotrophic angiosperms growing on Glomeromycota
Promotor: Prof.dr. E.F. Smets
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Interactions of Human Mobility and Farming Systems and Impacts on Biodiversity and Soil Quality in the Western Highlands of Cameroon
Promotors: Prof.dr. G.R. de Snoo, Prof.dr. G.A. Persoon, Prof.dr.ir. H.H. de Iongh
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Evolutionary diversification of coral-dwelling gall crabs (Cryptochiridae)
Promotor: Prof.dr. E Gittenberger, Co-Promotores: C.H.J.M. Fransen, B.W. Hoeksema
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Jos Raaijmakers genomineerd voor Huibregtsenprijs 2022
Het onderzoeksproject van Jos Raaijmakers is genomineerd voor de Huibregtsenprijs 2022. De onderzoeker van het NIOO, met gastaanstelling bij het Instituut Biologie Leiden (IBL), is één van de zes genomineerden. Op de Avond van Wetenschap & Maatschappij, 10 oktober 2022, maakt de jury de winnaar beke…
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Deze elf Leidse bètaonderzoekers behoren tot de meest geciteerden ter wereld
Elf onderzoekers van de faculteit Wiskunde en Natuurwetenschappen staan op de 2021 Highly Cited Researchers-lijst van Clarivate Analytics. Slechts 0,1 procent van de wereldwijde onderzoekers komt in deze lijst voor, waarmee ze dus letterlijk één uit duizend zijn.
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Parallel evolution in an invasive plant species: evolutionary changes in allocation to growth, defense, competitive ability and regrowth of invasive
Promotor: Prof.dr. P.G.L Klinkhamer, Co-promotor: K. Vrieling
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Species Literacy: The perception and cultural portrayal of animals
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.
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Evolutie van bacteriële beweging ontrafeld
Een internationaal team met onderzoekers uit Leiden heeft ontdekt hoe een bacterie een intern systeem heeft herschikt om grip op beweging te krijgen. Gecontroleerde beweging is heel belangrijk bij het binnendringen van een gastheer, met mogelijk ziekte tot gevolg. Publicatie op 27 april in Nature Co…
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IBL coördineert project voor nieuwe medicijnen uit biodiversiteit van de zee
Gilles van Wezel van het Instituut Biologie Leiden gaat een Europees consortium leiden om nieuwe medicijnen en ziekte-onderdrukkende microben te vinden, met behoud van biodiversiteit. Er wordt gekeken naar het nog grotendeels onbekende potentieel van in de zee levende micro-organismen.
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Essentiality of conserved amino acid residues in β-lactamase
Evolution acts via mutations in amino acid sequences. Substitution of essential amino acids leads to a nonfunctional protein. l.
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Population size fails to explain the evolution of complex culture
The logic seems inescapable indeed. The bigger the population, the higher the probability it contains an Einstein. Hence, bigger populations are more likely to develop complex culture.
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Phylogenetic ecology of octocoral - gastropod associations
Promotor: E. Gittenberger, Co-promotores: L.P. van Ofwegen; B.W. Hoeksema
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Invertebrate response to management of roadside edges
Does roadside management in the mid-west USA increase invertebrate diversity similar to practices in Europe?
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Microbial communities in Pampa soils; impact of land use changes, soil type and climatic conditions
Promotor: J.A. van Veen, Co-promotor: E.E. Kuramae
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The role of water in hydrogen electrocatalysis
Promotor: M.T.M. Koper, Co-promotor: L. Juurlink
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A well-established harmony in chaos: from isolated galaxies to galaxy clusters
The origin and evolution of galaxies are closely linked to many different physical phenomena.
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Docent Academische Vaardigheden
Wiskunde en Natuurwetenschappen, Instituut Biologie Leiden (IBL)
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Remote sensing-based assessment of functional diversity for polar ecosystems
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:…
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Evolutionary Developmental Biology of Bitterling Fish
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…
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Probing cosmic monsters: confronting hydrodynamic simulations with new observations of high-density environments
Galaxies in the Universe are distributed along the intricate framework of the Cosmic Web. Groups and clusters of galaxies comprise the densest regions in this network, and therefore, are excellent cosmic laboratories to study different aspects of galaxy evolution in extreme environments.
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‘Ik heb altijd gewerkt aan een betere wereld. Hier bij Biologie doen we dat ook’
De nieuwe instituutsmanager van het IBL studeerde zelf een half jaar biologie, maar ging toch een heel andere kant op: ontwikkelingssamenwerking en de financiële sector. Drie decennia later maakt Resi Janssen een radicale carrièreswitch. Of toch niet? ‘Ik wil dat we over tien jaar in een nieuw, duurzaam…
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Beschermende plantengeuren door evolutie gedreven
Planten kunnen zichzelf niet beschermen door van zich af te slaan met scherpe klauwen. Maar toch kan de plant voor hem levensgevaarlijke herbivoren afschrikken. Dat is mogelijk met geuren. Klaas Vrieling van het Instituut Biologie Leiden kwam tot de ontdekking dat evolutie een grote rol speelt om de…
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Plant occurrence in space and time: the importance of land use, habitat structure, and pollination mode
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.
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Invertebrates on the edge
What invertebrates live in the fields and edges? Do the populations change with landscape complexity?
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Bugs and birds and landscape complexity
What invertebrates are available to feed nestlings in an agricultural landscape of varied complexity?
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Resolving gas-phase metallicity in galaxies
Galaxies are environments where gas coalesces, cools, and is converted into stars. However, it remains unclear the exact mechanisms through which galaxies acquire, redistribute and lose their gas.
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Universiteit Leiden en Naturalis lanceren samen nieuwe MOOC 'Evolution Today'
Evolutie is elke dag om je heen. Dat is de boodschap van de nieuwe Massive Open Online Course (MOOC) van de Universiteit Leiden en Naturalis die 19 september van start gaat.
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Catalysis of the electrochemical water oxidation to oxygen
Promotor: Prof.dr. M.T.M. Koper, Co-Promotor: F. Calle-Vallejo
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Metals in the diffuse gas around high-redshift galaxies
Promotores: Prof.dr. J. Schaye & Prof.dr. C. Steidel (California Institute of Technology)
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Resolving a bioindicator diatom species complex using genomic approaches for freshwater biomonitoring
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;
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The Miliuseae revisited: phylogenetic, taxonomic, and palynological studies in a major clade of Annonaceae
Promotor: Prof.dr. E.F. Smets, Co-Promotor: L.W. Chatrou
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Diversity and distribution of octocorals and scleractinians in the Persian Gulf region
Promotor: E. Gittenberger, Co-promotores: B.W. Hoeksema; L.P. van Ofwegen
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Satellite remote sensing of plant functional diversity
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.
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The characteristics of galaxies with powerful radio jets
Radio jets are important to the evoultion of galaxies. However, it is still not fully understood how a radio jet can be triggered.
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Patterns of coral species richness and reef connectivity in Malaysia
Promotor: E. Gittenberger, Co-promotor: B.W. Hoeksema
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Withstanding the cold: energy feedback in simulations of galaxies that include a cold interstellar medium
Understanding how galaxies form, interact, and evolve comes largely from comparing theory predictions with observational data. Numerical simulations of galaxies provide the most accurate approach to testing the theory, as they follow the non-linear evolution of gas and dark matter in great detail and…
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Bayesian Inference for Gaussian Models
This dissertation studies the Asymptotics of Bayesian nonparametric inference for Gaussian linear models.
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Mechanistic studies of the water oxidation reaction with molecular iron catalysts
In this dissertation iron-based homogeneous catalysts were synthesized, characterized and investigated for water oxidation activity.
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Artificial metallo-proteins for photocatalytic water splitting: stability and activity in artificial photosynthesis
Climate change is one of the largest challenges faced by humanity. To combat this research into alternatives to fossil fuels is ongoing. Dihydrogen is considered a good alternative fuel, since its burning only forms water.
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is benoemd tot bijzonder hoogleraar Environmental Toxicology and Biodiversity
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…
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Hybrid zone dynamics in amphibians
Hybrid zones occur where two species meet and produce offspring (hybrids). Typically, hybrids show a considerable reduction in fitness. In this thesis two hybrid zones are treated.