Björn Reu

Björn Reu
Industrial University of Santander | UIS · School of Biology

Dr. rer. nat.

About

54
Publications
37,362
Reads
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4,576
Citations
Additional affiliations
March 2015 - present
Industrial University of Santander
Position
  • Professor
April 2011 - February 2015
University of Leipzig
Position
  • Research Assistant
April 2007 - March 2011
Max Planck Institute for Biogeochemistry Jena
Position
  • PhD Student
Education
October 2000 - July 2006
University of Bayreuth
Field of study
  • Geoecology

Publications

Publications (54)
Article
Full-text available
Phosphorus (P) availability decreases with soil age and potentially limits the productivity of ecosystems growing on old and weathered soils. Despite growing on ancient soils, ecosystems of lowland Amazonia are highly productive and are among the most biodiverse on Earth. P eroded and weathered in the Andes is transported by the rivers and deposite...
Article
Habitat fragmentation, the transformation of interconnected large habitats into several small patches, is generally considered to have a negative influence on biodiversity. Management policies should therefore favour strategies that minimize fragmentation. We studied amphibian diversity and compositional patterns in a complex montane agroforestry m...
Article
Full-text available
In the Colombian Andes, agroforestry is a traditional form of agriculture, characterized by a heterogeneous and often diversified composition of trees and crops. This form of land use provides important ecosystem services, such as carbon sequestration, reduction of soil erosion and the maintenance of biodiversity by providing a structural complex h...
Article
Full-text available
Plant functional traits can predict community assembly and ecosystem functioning and are thus widely used in global models of vegetation dynamics and land–climate feedbacks. Still, we lack a global understanding of how land and climate affect plant traits. A previous global analysis of six traits observed two main axes of variation: (1) size variat...
Article
Full-text available
Tropical ecosystems experience particularly fast transformations largely as a consequence of land use and climate change. Consequences for ecosystem functioning and services are hard to predict and require analyzing multiple data sets simultaneously. Today, we are equipped with a wide range of spatio-temporal observation-based data streams that mon...
Preprint
Full-text available
We test the hypothesis that allocation to reserves exhibits a coordinated variation with functional traits associated with the ‘fast-slow’ plant economics spectrum, using an extensive dataset of 61 tree species across three biomes. Our results show that non-structural carbohydrate concentrations (NSC) are decoupled from the fast-slow continuum, the...
Article
Full-text available
Canopy structure is an important driver of the energy budget of grassland ecosystem and is, at the same time, altered by plant diversity. Diverse plant communities typically have taller and more densely packed canopies than less diverse communities. With this, they absorb more radiation, have a higher transpiring leaf surface and are better coupled...
Article
Full-text available
With a growing human population facing multiple global change drivers (i.e. climate change and land management change), the future of food security is of major importance. Sustainable agriculture is therefore key to ensure food supply and food security under future climatic conditions. Forage provision (composed of forage quantity and forage qualit...
Poster
Full-text available
International Mountain Conference (2019, Innsbruck), I tried out a more provoking and less "wall-of-text" approach.
Article
Full-text available
Wie kann es gelingen, den weltweit wachsenden Bedarf an landwirtschaftlichen Flächen zu befriedigen, ohne dabei gleichzeitig dem Verlust biologischer Vielfalt Vorschub zu leisten? Gehören bisher gültige Schutz- und Nutzungskonzepte auf den Prüfstand? Wissenschaftler des Senckenberg-Instituts Dresden untersuchen mit ihren kolumbianischen Kollegen, w...
Method
Full-text available
Calendar for self-documentation, planning, and analysis of family farming. From this documentation, the necessary information is gathered to make Emergia's analyses of family farms. The calendar is now used as a tool for the FiNCO strategy The calendar is now being used as one of the tools of the FiNCO knowledge exchange farms work strategy. This s...
Method
Full-text available
Calendario como una herramienta para la planeación, la autodocumentación y el análisis de de la agricultura familiar.
Conference Paper
Full-text available
In experimental systems, biodiversity enhances ecosystem functioning, but the underlying mechanisms are still subject to debate. Although ecologists have gone a long way to separate the mechanisms experimentally and statistically, most studies are based on one or two annual measurements of ecosystem functions although these functions are likely dri...
Article
Full-text available
After more than 50-years of armed conflict, Colombia is now transitioning to a more stable social and political climate due to a series of peace agreements between the government and different armed groups. Consequences of these socio-economic and political changes on ecosystems are largely uncertain, but there is growing concern about derived incr...
Presentation
Full-text available
Presentation
Full-text available
Colombia is one of the most biodiverse countries on Earth and is currently entering an era of tremendous societal and economic transformations. Formerly inaccessible conflict areas will face development, agricultural expansion, and intrusion of extractive industries threatening Colombia’s ecosystems and biodiversity. This constitutes a great challe...
Presentation
Full-text available
Colombia is experiencing a tremendous societal and economic transformation with unknown consequences for its biodiversity and ecosystems. While rates of change of land cover and climate have reached unprecedented velocities, information about the state of Colombian ecosystems is becoming increasingly available and openly accessible. However, these...
Presentation
Full-text available
Colombia is experiencing a tremendous societal and economic transformation with unknown consequences for its biodiversity and ecosystems. While rates of change of land cover and climate have reached inprecedented velocities, information about the state of Colombian ecosystems is becoming increasingly available and openly accessible. However, these...
Article
Full-text available
Amazonian ecosystems are of global importance for the climate system and biodiversity. Phosphorus (P) is suggested to be a limited nutrient in many Amazonian ecosystems because soils are ancient, highly weathered, and nutrient depleted. Recently, it has been suggested that large herbivores may play a major role in the Amazon nutrient cycle. Here, w...
Article
Full-text available
Are we entering a new ‘Golden Age’ of biogeography, with continued development of infra-structure and ideas? We highlight recent developments, and the challenges and opportunities they bring, in light of the snapshot provided by the 7th biennial meeting of the International Biogeography Society (IBS 2015). We summarize themes in and across 15 sympo...
Article
Full-text available
Old-growth forests are subject to substantial changes in structure and species composition due to the intensification of human activities, gradual climate change and extreme weather events. Trees store ca. 90 % of the total aboveground biomass (AGB) in tropical forests and precise tree biomass estimation models are crucial for management and conser...
Data
A full text is currently unavailable. Suggest contact the lead author: sdiaz@efn.uncor.edu Kind regards, andy g
Article
Full-text available
Future global change scenarios predict a dramatic loss of biodiversity for many regions in the world, potentially reducing the resistance and resilience of ecosystem functions. Once before, during Plio-Pleistocene glaciations, harsher climatic conditions in Europe as compared to North America led to a more depauperate tree flora. Here we hypothesiz...
Article
Full-text available
Earth is home to a remarkable diversity of plant forms and life histories, yet comparatively few essential trait combinations have proved evolutionarily viable in today’s terrestrial biosphere. By analysing worldwide variation in six major traits critical to growth, survival and reproduction within the largest sample of vascular plant species ever...
Article
Full-text available
Old-growth forests are subject to substantial changes in structure and species composition due to the intensification of human activities, gradual climate change and extreme weather events. Trees store ca. 90 % of the total AGB above-ground biomass in tropical forests and AGB estimation models are crucial for forest management and conservation. In...
Article
The allocation of non-structural carbohydrates (NSCs) to reserves constitutes an important physiological mechanism associated with tree growth and survival. However, procedures for measuring NSC in plant tissue are expensive and time-consuming. Near-infrared spectroscopy (NIRS) is a high-throughput technology that has the potential to infer the con...
Article
Full-text available
Using functional traits to explain species' range limits is a promising approach in functional biogeography. It replaces the idiosyncrasy of species-specific climate ranges with a generic trait-based predic-tive framework. In addition, it has the potential to shed light on specific filter mechanisms creating large-scale vegetation patterns. However...
Article
Full-text available
Canopy gaps created by wind-throw events, or blowdowns, create a complex mosaic of forest patches varying in disturbance intensity and recovery in the Central Amazon. Using field and remote sensing data, we investigated the short-term (four-year) effects of large (>2000 m2) blowdown gaps created during a single storm event in January 2005 near Mana...
Article
Full-text available
Disturbance is a key factor shaping species abundance and diversity in plant communities. Here, we use a mechanistic model of vegetation diversity to show that different strengths of r- and K-selection result in different disturbance-diversity relationships. R- and K-selection constrain the range of viable species through the colonization-competiti...
Article
Full-text available
Abstract. The adaptation of plant species to their biotic and abiotic environment is manifested in their traits. Suites of correlated functional traits may reflect fundamental tradeoffs and general plant strategies and hence represent trait spectra along which plant species can vary according to their respective strategies. However, the functional...
Article
Projections of future climate change suggest that regional climates may evolve to states that are unlike any climate regime found on Earth today. These climates will impose novel constraints on plant species, and are likely to give rise to plant associations that are compositionally unlike any found on Earth today. Here, we explore whether the geog...
Article
Full-text available
Hydromorphic podzol soils in the Amazon Basin generally support low-stature forests with some of the lowest amounts of aboveground net primary production (NPP) in the region. However, they can also exhibit large values of belowground NPP that can contribute significantly to the total annual inputs of organic matter into the soil. These hydromorphic...
Article
Full-text available
Terrestrial biosphere models typically abstract the immense diversity of vegetation forms and functioning into a relatively small set of predefined semi-empirical plant functional types (PFTs). There is growing evidence, however, from the field ecology community as well as from modelling studies that current PFT schemes may not adequately represent...
Thesis
Understanding the mechanisms driving the dynamics of plant communities is still a challenge for ecologists, in particular in tropical forests, where species number are substantially higher than in temperate regions and population sizes are lower, respectively. Mainly two theories have been discussed intensively in this context. The neutral theory o...
Article
Full-text available
Hydromorphic podzol soils in the Amazon Basin generally support low-stature forests with some of the lowest amounts of aboveground net primary production (NPP) in the region. However, they can also exhibit large values of belowground NPP that can contribute significantly to the total annual inputs of organic matter into the soil. These hydromorphic...
Article
Full-text available
Dynamic Global Vegetation Models (DGVMs) typically abstract the immense diversity of vegetation forms and functioning into a relatively small set of predefined semi-empirical Plant Functional Types (PFTs). There is growing evidence, however, from the field ecology community as well as from modelling studies that current PFT schemes may not adequate...
Article
Increases in consumption associated with population growth, coupled with projected changes in surface climate over the coming decades, will present a new set of challenges to global agriculture. An increase in demand for agricultural commodities, along with a greater fraction of farmed products being diverted for uses such as energy production, is...
Article
Full-text available
Plant traits – the morphological, anatomical, physiological, biochemical and phenological characteristics of plants and their organs – determine how primary producers respond to environmental factors, affect other trophic levels, influence ecosystem processes and services and provide a link from species richness to ecosystem functional diversity. T...
Article
Full-text available
The global geographic distribution of biodiversity and biomes is determined by species-specific physiological tolerances to climatic constraints. Current vegetation models employ empirical bioclimatic relationships to predict present-day vegetation patterns and to forecast biodiversity changes and biome shifts under climatic change. In this paper,...
Article
Full-text available
While the regional climate is the primary selection pressure for whether a plant strategy can survive, however, competitive interactions strongly affect the relative abundances of plant strategies within communities. Here, we investigate the relative importance of competition and perturbations on the development of vegetation community structure. T...
Article
Full-text available
Aim Two of the oldest observations in plant geography are the increase in plant diversity from the poles towards the tropics and the global geographic distribution of vegetation physiognomy (biomes). The objective of this paper is to use a process-based vegetation model to evaluate the relationship between modelled and observed global patterns of p...
Article
The terrestrial biosphere is a complex, self-organizing system which is continually both adapting to and altering its global environment. It also exhibits a vast diversity of vegetation forms and functioning. However, the terrestrial biosphere components within current state-of-the-art Earth System Models abstract this diversity in to a handful of...
Article
Full-text available
The local climate represents the primary selection pressure acting on vegetation, but competitive interactions between plant strategies determine their composition. We link growth and reproduction characteristics from different plant strategies, that emerge from climatic constraints, to their competitive abilities and calculate explicitly their spa...
Article
Full-text available
The global geographic distribution of biodiversity and biomes is determined by species-specific physiological tolerances to climatic constraints. Current models implement empirical bioclimatic relationships to predict present-day vegetation patterns and to forecast biodiversity changes and biome shifts under climatic change. In this paper, we consi...
Article
Current state-of-the-art terrestrial biosphere models usually do not account for biodiversity, representing the diversity of vegetation form and functioning using only a small number of plant functional types. In the Jena Diversity (JeDi) model, we introduce a new approach, based not on plant functional types, but on plant ecophysiological trade-of...
Article
Full-text available
Among the most pronounced large-scale geographic patterns of plant biodiversity are the increase in plant species richness towards the tropics, a more even distribution of the relative abundances of plant species in the tropics, and a nearly log-normal relative abundance distribution. Here we use an individual-based plant diversity model that relat...

Projects

Projects (4)
Project
Objetivo general Comprender los factores que han dado lugar al estado actual de los paisajes en el Sector Norte de la Serranía de los Yariguíes a partir de un conocimiento compartido entre académicos y comunidades locales para proponer estrategias para la consolidación, la sostenibilidad y la resiliencia, de manera que pueda ser replicado en otros paisajes socioecológicos. Objetivos específicos 1. Estudiar las transformaciones históricas de la cobertura y uso del suelo en el sector norte de la Serranía de Los Yariguíes para identificar los motores de cambio que lo han conducido a su estado actual. 2. Estudiar la interacción entre las transformaciones en el uso del suelo y la biodiversidad para evaluar la resiliencia ecológica y el potencial de los diferentes paisajes para la conservación de la biodiversidad 3. Desarrollar participativamente escenarios futuros de transformación para evaluar su impacto potencial en la resiliencia del paisaje utilizando los indicadores de resiliencia socioecológica