Prof. Dr. Catherine Graham

Prof. Dr. Catherine Graham

Funzione

Responsabile di gruppo

Biodiversità ed ecologia della conservazione

Dinamica degli ecosistemi

  

Swiss Federal Research Institute WSL
Zürcherstrasse 111
8903 Birmensdorf

Sito

WSL Birmensdorf Bi MG C 47

CURRENT POSITION

Group Leader, Swiss Federal Institute for Forest, Snow and Landscape Research (WSL), 9/2016 to present

Adjunct Professor, Department of Ecology and Evolution, Stony Brook University, 9/2017 to present

 

 PAST POSITIONS

Assistant/Associate/Full  Professor, Department of Ecology and Evolution, Stony Brook University 8/2003-11/2017

 RESEARCH INTERESTS

I study how the spatial and temporal arrangement of habitats influences biological diversity.  This issue relates to a number of fundamental questions in ecology that have challenged scientists for decades.  Questions include: Why do mountains have extraordinary biodiversity? What is the importance of niche partitioning in maintaining biological diversity? and How does the climate history of a region influence its current patterns of biological diversity? Addressing these types of questions requires integration from a range of fields, including ecology, evolutionary biology, biogeography, climatology, geology and conservation biology because mechanisms that influence biological diversity are played out across a range of spatial and temporal scales. Much of my current work is focused on the role of plant-hummingbird interactions in the generation and maintenance of high tropical diversity; however, I also work on multiple other systems and questions including drivers of global diversity and, most recently, of European montane plants.

 

Projects

The project will assess the natural conditions and management activities that influence grassland plant diversity in the Alps and Carpathians which have diverse land-uses, biodiversity hotspots and good data coverage.

Das Joint-Intiative Projekt SPEED2ZERO zeigt Wege auf, wie durch Massnahmen, wie dem Ausbau von erneuerbarer Energiegewinnung und optimierter Biodiversitätsplanung, eine treibgausgasfreie und biodiversitätsfreundliche Schweiz erreicht werden kann.

Alpine Ökosysteme verändern sich im Zuge des Klimawandels und stellen das empfindliche Timing der Interaktionen zwischen Pflanzen und Bestäubern in Frage. Dieses Projekt untersucht, wie automatische Kameras, Bürgerwissenschaft und KI dabei helfen können, diese Veränderungen in abgelegenen Bergregionen zu verfolgen.

We are conducting a series of experiments, from plant-hummingbird network manipulations to germination trials, to inform landscape restoration.

We will enhance the design of the Swiss NFI plots to accomodate an augmented series of measurements, sampling and analysis needed to respond to pressing research question on status and change of the Swiss forest.

Food-web structure is likely affected by global change with consequences for biodiversity and ecosystem functioning. In this project we study changes in food webs and nutrient fluxes in response to global change drivers in aquatic, terrestrial and interconnected habitats.

Global patterns of community dynamics - how to terrestrial and aquatic systems differ?

This project contributes to the Blue-Green Biodiversity Research Initiative – an Eawag-WSL collaboration focusing on Biodiversity at the interface of aquatic and terrestrial ecosystems.

Das Hauptziel dieses Projektes ist, für den Schweizer Wald zu ergründen wie sich verschiedene Diversitätskomponenten mit zunehmender Fläche und in Abhängigkeit von sich verändernder Heterogenität verhalten.

Publications

Arteaga-Chávez W.A., Graham C.H., Guevara E.A., Tinoco B.A. (2025) Plants partition the pollinator niche by depositing pollen on different parts of the pollinator body. PLoS One. 20(5 May), e0323577 (15 pp.). doi:10.1371/journal.pone.0323577 Institutional Repository DORA

Barreto E., Duchenne F., Beck H., Bello C., Bobato R., Brenes E., … Graham C.H. (2025) Hummingbird flower visitation rates vary with species traits, floral abundance and phenology across bioregions. Oikos. doi:10.1002/oik.11354 Institutional Repository DORA

Duchenne F., Barreto E., Guevara E.A., Beck H., Bello C., Bobato R., … Graham C.H. (2025) A probabilistic view of forbidden links: their prevalence and their consequences for the robustness of plant–hummingbird communities. Ecol. Lett. 28(1), e70073 (12 pp.). doi:10.1111/ele.70073 Institutional Repository DORA

Ghosh S., Matthews B., Supp S.R., van Klink R., Pomati F., Rusak J.A., … Graham C.H. (2025) Synchrony and tail‐dependent synchrony have different effects on stability of terrestrial and freshwater communities. Glob. Ecol. Biogeogr. 34(3), e70013 (13 pp.). doi:10.1111/geb.70013 Institutional Repository DORA

Graham C.H., Araujo M.L., Barreto E., Dambros C.S., Diniz‐Filho J.A.F., Zimmermann N.E., … Pacheco Coelho M.T. (2025) Biodiversity patterns redefined in environmental space. Ecol. Lett. 28(2), e70008 (18 pp.). doi:10.1111/ele.70008 Institutional Repository DORA

P. Coelho M.T., Barreto E., Diniz-Filho J.A.F., Rangel T.F., Bohdalková E., Storch D., … Graham C.H. (2025) Consistent energy-diversity relationships in terrestrial vertebrates. Science. 389(6755), 53-57. doi:10.1126/science.adu2590 Institutional Repository DORA

Vélez A., Graham C.H., Alarcón I.P., Arias R., Cárdenas-Calle S., Landázuri O., … Tinoco B.A. (2025) Changes in functional traits and resources reduce the specialization of hummingbirds in fragmented landscapes. Glob. Ecol. Conserv. 58, e03469 (12 pp.). doi:10.1016/j.gecco.2025.e03469 Institutional Repository DORA

de Oliveira R., Barreto E., Zanata T.B., Tobar F., Santander T., Gavilanes M.J., … Varassin I.G. (2025) Niche packing, but not niche expansion, explains the co-occurrence of hummingbirds-visited plants. Ecography. 2025(6), e07440 (6 pp.). doi:10.1111/ecog.07440 Institutional Repository DORA

Altermatt F., Graham C., Holderegger R., Fischer M., Klaus G. (2024) Blau-grüne Biodiversität erkennen, erhalten und fördern. Erkenntnisse aus der Forschungsinitiative «Blue-Green Biodiversity». Dübendorf; Birmensdorf: Eawag (Wasserforschungsinstitut des ETH-Bereichs); WSL (Eidg. Forschungsanstalt für Wald, Schnee und Landschaft, ETH-Bereich). 55 p. Institutional Repository DORA

Altermatt F., Graham C., Holderegger R., Fischer M., Klaus G. (2024) Identifier, préserver et promouvoir la biodiversité bleu-vert. Enseignements tirés de l'initiative de recherche «Blue-Green Biodiversity». Dübendorf; Birmensdorf: Eawag (Institut fédéral suisse des sciences et technologies de l’eau, du domaine des EPF); WSL (Institut fédéral de recherches sur la forêt, la neige et le paysage, du domaine des EPF). 55 p. Institutional Repository DORA

Barreto E., Boehm M.M.A., Ogutcen E., Abrahamczyk S., Kessler M., Bascompte J., … Graham C.H. (2024) Macroevolution of the plant–hummingbird pollination system. Biol. Rev. 99(5), 1831-1847. doi:10.1111/brv.13094 Institutional Repository DORA

Botella C., Gaüzère P., O'Connor L., Renaud J., Dou Y., Graham C.H., … Thuiller W. (2024) Don't bite the hand that feeds you: Meta food webs help in the face of the Eltonian shortfall. Glob. Chang. Biol. 30(6), e17359 (2 pp.). doi:10.1111/gcb.17359 Institutional Repository DORA

Botella C., Gaüzère P., O'Connor L., Ohlmann M., Renaud J., Dou Y., … Thuiller W. (2024) Land-use intensity influences European tetrapod food webs. Glob. Chang. Biol. 30(2), e17167 (14 pp.). doi:10.1111/gcb.17167 Institutional Repository DORA

Ferretti M., Fischer C., Gessler A., Graham C., Meusburger K., Abegg M., … Shackleton R.T. (2024) Advancing forest inventorying and monitoring. Ann. For. Sci. 81(1), 6 (25 pp.). doi:10.1186/s13595-023-01220-9 Institutional Repository DORA

Khaliq I., Rixen C., Zellweger F., Graham C.H., Gossner M.M., McFadden I.R., … Narwani A. (2024) Warming underpins community turnover in temperate freshwater and terrestrial communities. Nat. Commun. 15(1), 1921 (9 pp.). doi:10.1038/s41467-024-46282-z Institutional Repository DORA

Maglianesi M.A., Brenes E., Chaves-Elizondo N., Zuniga K., Castro Jiménez A., Barreto E., … Graham C.H. (2024) Species morphology better predicts plant–hummingbird interactions across elevations than nectar traits. Proc. R. Soc. B. 291(2031), 20241279 (12 pp.). doi:10.1098/rspb.2024.1279 Institutional Repository DORA

Shipley J.R., Frei E.R., Bergamini A., Boch S., Schulz T., Ginzler C., … Rixen C. (2024) Agricultural practices and biodiversity: conservation policies for semi-natural grasslands in Europe. Curr. Biol. 34(16), R753-R761. doi:10.1016/j.cub.2024.06.062 Institutional Repository DORA

Shipley J.R., Oester R., Mathieu-Resuge M., Parmar T.P., Kowarik C., Ilíć M., … Twining C.W. (2024) Consumer biodiversity increases organic nutrient availability across aquatic and terrestrial ecosystems. Science. 386(6719), 335-340. doi:10.1126/science.adp6198 Institutional Repository DORA

Barreto E., Lim M.C.W., Rojas D., Dávalos L.M., Wüest R.O., Machac A., Graham C.H. (2023) Morphology and niche evolution influence hummingbird speciation rates. Proc. R. Soc. B. 290(1997), 20221793 (10 pp.). doi:10.1098/rspb.2022.1793 Institutional Repository DORA

Bello C., Schleuning M., Graham C.H. (2023) Analyzing trophic ecosystem functions with the interaction functional space. Trends Ecol. Evol. 38(5), 424-434. doi:10.1016/j.tree.2022.12.001 Institutional Repository DORA

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