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Research projects

Human-Environmental Interactions in Deglaciating Landscapes

Mountain glaciers are projected to largely disappear by the end of the 21st century. Where vanishing glaciers interact with the inhabited landscape, societies face new challenges to ensure water availability, slope stability, energy production, tourism, and other essential ecosystem services. Yet, the new land emerging as a result of glacier retreat presents an opportunity for novel high-alpine ecosystems to migrate upward under the effects of warming.


My dissertation research investigates how physical, ecological, and social processes interact to drive ecosystem changes in alpine proglacial landscapes and how these inform the best adaptation strategies.  I mixed explanatory and experimental approaches and employ a multiscale approach that combines in situ plot surveys, near ground remote sensing, soil temperature monitoring, laboratory analyses, and measurements with UAV high-resolution aerial imagery.

Novel proglacial ecosystems: ecological & geomorphic dynamics

First, I study in tandem the processes of primary succession and geomorphological dynamics of nine proglacial landscapes. My study sites include the Peruvian Tropical Andes and the European Alps, setting up a biogeographical comparison between the two continents. I combine floristic and geomorphologic plot surveys with near-ground RGN (Red-Green-Near infrared) remote sensing methods and macro-scale multispectral UAV (unmanned aerial vehicle) imagery. Between 2019 and 2021, in collaboration with local partners, we surveyed a total of 620 in situ (2x2m) plots, carried out 188 drone flights, collected 189 soil samples, and buried 113 temperatures sensors within the 9 study sites.

Orny glacier forefield _Laurence Piaget Dubois

Orny , August 2020
@Laurence Piaget-Dubuis

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Uruashraju, June 2020
@Carlos Ly

Tour, August 2021

Orny, August 2021
@A l'Ombre des glaciers

Adaptative strategies for the sustainable development of proglacial landscapes.

Second, I examine how periglacial land management can enhance the ecological transition from recently deglacierized land to productive ecosystems, and therefore reduce risk and enhance climate resilience in deglaciating regions.

 

I use an experimental approach by studying Andean camelids as seed dispersers, soil fertilizers, and zoogeomorphologic agents, favoring proglacial ecosystem formation. In June 2019, in collaboration with the National Park of Huascarán and the Llama 2000 Asociación we set up a llama grazing experiment at the foot of the Uruashraju glacier (4706masl) in the Cordillera Blanca, Peru. Once a year we evaluate a serie of 64 permanent plot, analyze soil samples and monitor soil temperature.

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Uruashraju, June 2020 @Carlos Ly

Through the grazing experiment, we aim to respond to societal problems and concerns and propose solutions that can be implemented at larger scales and for other grazers in mountain systems.

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Uruashraju, June 2020 

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Uruashraju, January 2021

Uruashraju, January 2021

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Uruashraju, June 2020

@Carlos Ly

Main collaborators

Andes

Parque Nacional Huascarán (Servicio Nacional de Áreas Naturales Protegidas por el Estado — SERNANP), the National Water Authority (Área de Evaluación de Glaciares y Lagunas), the Natural History Museum and the National University of San Marcos in Lima, the Llama 2000 Asociación, The Mountain Institute and the INAIGEM.

European Alps

Alpine Botanical National Conservatory (CBNA), the Institute of Environmental Geosciences (Institut des Géosciences de l'Environnement – IGE, Univ. Grenoble Alpes, CNRS), the Vanoise National Park, the Ecrins National, the Research Center for Alpine Ecosystems (CREA Mont-Blanc) and the Flore-Alpe Alpine Botanical Garden, Champex-Le-Lac, Switzerland.

Study sites
Glaciers Overview

Peruvian Andes

Cordillera Blanca, Huascarán National Park

(a.) Uruashraju glacier

(b.) Yanamarey glacier, 

(c.) Broggi glacier (Disappearance in 2003)


French Alps

Mont Blanc Mountain Range

(d.) Tour glacier

(e.) Pélerins glacier
 

Vanoise National Park

(f.) Gébroulaz Glacier

Ecrins National Park

(g.) Glacier Blanc
 

Grandes Rousses Mountain Range

(h.) Saint Sorlin

Swiss Alps
Mont Blanc Mountain Range

(i.) Orny

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