Arnald Marcer

Arnald Marcer
CREAF Centre for Ecological Research and Forestry Applications | CREAF

Ph D. in Terrestrial Ecology

About

31
Publications
5,960
Reads
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1,240
Citations
Additional affiliations
January 2010 - present
January 2003 - December 2009
September 1995 - June 2003
Education
June 2009 - May 2013
Autonomous University of Barcelona
Field of study
  • Terrestrial Ecology
September 2008 - June 2009
Autonomous University of Barcelona
Field of study
  • Environmental Studies
August 1989 - June 1991
Yale University
Field of study
  • Environmental Management

Publications

Publications (31)
Article
Full-text available
Genetic diversity provides insight into heterogeneous demographic and adaptive history across organisms’ distribution ranges. For this reason, decomposing single species into genetic units may represent a powerful tool to better understand biogeographical patterns as well as improve predictions of the effects of GCC (global climate change) on biodi...
Article
Full-text available
The role that different life-history traits may have in the process of adaptation caused by divergent selection can be assessed by using extensive collections of geographically-explicit populations. This is because adaptive phenotypic variation shifts gradually across space as a result of the geographic patterns of variation in environmental select...
Article
Aim: There is a wealth of information on species occurrences in biodiversity data banks, albeit presence-only, biased and scarce at fine resolutions. Moreover, fine-resolution species maps are required in biodiversity conservation. New techniques for dealing with this kind of data have been reported to perform well. These fine-resolution maps would...
Article
Full-text available
Recent comprehensive data provided through the DAISIE project (www.europe-aliens.org) have facilitated the development of the first pan-European assessment of the impacts of alien plants, vertebrates, and invertebrates in terrestrial, freshwater, and marine environments on ecosystem services. There are 1094 species with documented ecological impact...
Article
1. Evolutionary change begins at the population scale. Therefore, understanding adaptive variation requires the identification of the factors maintaining and shaping standing genetic variation at the within‐population level. Spatial and temporal environmental heterogeneity represent ecological drivers of within‐population genetic variation, determi...
Article
Full-text available
Natural history collections (NHCs) represent an enormous and largely untapped wealth of information on the Earth's biota, made available through GBIF as digital preserved specimen records. Precise knowledge of where the specimens were collected is paramount to rigorous ecological studies, especially in the field of species distribution modelling. H...
Article
Widely used Correlative Species Distribution Models (C-SDMs) usually make some simplifying assumptions, often failing to consider important ecological and evolutionary attributes potentially hindering the characterization of the species niche. Here, we use the tree species Taxus baccata to explore the effects of including biologically meaningful in...
Article
Full-text available
Natural history collections constitute an enormous wealth of information of Life on Earth. It is estimated that over 2 billion specimens are preserved at institutions worldwide, of which less than 10% are accessible via biodiversity data aggregators such as GBIF. Moreover, they are a very important resource for eco‐evolutionary research, which grea...
Article
Full-text available
Background: Disentangling the drivers of genetic differentiation is one of the cornerstones in evolution. This is because genetic diversity, and the way in which it is partitioned within and among populations across space, is an important asset for the ability of populations to adapt and persist in changing environments. We tested three major hypot...
Article
The combination of extensive population sampling with whole-genome sequencing in the annual plant Arabidopsis thaliana has recently allowed the identification of a genetically differentiated relict lineage. The most important nuclei of relict A. thaliana is found in the Iberian Peninsula and North Africa, although relict accessions have also been f...
Presentation
Adaptive variation in phenotypic traits enhances the viability of populations in changing environments and accounts for the establishment of new populations in novel environments. In the long run, natural selection determines the distribution range of any organism whose populations may eventually occur in contrasting environments and displaying bro...
Article
Global climate change (GCC) may be imposing distribution range shifts in many organisms worldwide. Multiple efforts are currently focused on the development of models to better predict distribution range shifts due to GCC. We addressed this issue by including intra‐specific genetic structure and spatial autocorrelation (SAC) of data in distribution...
Article
Full-text available
The Museu de Ciències Naturals de Barcelona (MCNB) holds a collection of ca. 130,000 digitally registered zoological specimens collected around the world and dating from 1852 to the present. Specimens are shared between non-arthropod invertebrates (32% of the collection), arthropod invertebrates (39%) and vertebrates (29%). The museum recognizes ge...
Article
Full-text available
The concept of building a network of relationships between entities, a knowledge graph, is one of the most effective methods to understand the relations between data. By organizing data, we facilitate the discovery of complex patterns not otherwise evident in the raw data. Each datum at the nodes of a knowledge graph needs a persistent identifier (...
Article
Full-text available
Natural history collections represent a vast and superb wealth of information gathered and curated across centuries by institutions such as natural history museums and botanical gardens around the world. The relatively recent advent and maturation of accessible computer technology has allowed the initiation of major digitization projects aimed at m...
Article
Full-text available
Rapid evolution in annual plants can be quantified by comparing phenotypic and genetic changes between past and contemporary individuals from the same populations over several generations. Such knowledge will help understand the response of plants to rapid environmental shifts, such as the ones imposed by global climate change. To that end, we unde...
Article
Current global change is fueling an interest to understand the genetic and molecular mechanisms of plant adaptation to climate. In particular, altered flowering time is a common strategy for escape from unfavorable climate temperature. In order to determine the genomic bases underlying flowering time adaptation to this climatic factor, we have syst...
Article
Full-text available
To understand how adaptive evolution in life-cycle phenology operates in plants, we need to unravel the effects of geographical variation in putative agents of natural selection on life-cycle phenology by considering all key developmental transitions and their co-variation patterns. We address this goal by quantifying the temperature-driven and geo...
Presentation
Full-text available
It describes the design and results obtained in the study of the genetic structure (based on microsatellite genetic markers) of a complex of species presenting overlapping distributions in the Western Mediterranean. Gene flow and hybridization between A. clavatus and A. valentinus were confirmed. No solid evidence of the current presence of A. homo...
Preprint
Aim To assess the effects of climate change on genetic lineages of Arabidopsis thaliana at the admixed population level by directly modelling genetic cluster membership values to predict potential genetic cluster memberships across the Iberian Peninsula. Location Iberian Peninsula Methods We used a dataset of 274 accessions structured in four gen...
Article
Full-text available
Europe is building its Open Science Cloud; a set of robust and interoperable e-infrastructures with the capacity to provide data and computational solutions through cloud-based services. The development and sustainable operation of such e-infrastructures are at the forefront of European funding priorities. The research community, however, is still...
Data
Figure S1. Spatial distribution of Iberian Arabidopsis thaliana accessions based on genetic units: OVR categories (N = 279), genetic clusters (N = 212) and chlorotype groups (N = 181). Figure S2. Genetic structure of Iberian Arabidopsis thaliana accessions estimated with STRUCTURE and nuclear SNPs. Accessions are depicted as horizontal bars divide...
Article
Full-text available
In order to preserve the variety of life on Earth, we must understand it better. Biodiversity research is at a pivotal point with research projects generating data at an ever increasing rate. Structuring, aggregating, linking and processing these data in a meaningful way is a major challenge. The systematic application of information management and...
Article
Protected-area coverage is an internationally-recognized surrogate indicator for measuring biodiversity conservation. To measure trends in biodiversity conservation over time, historical records on protected-area boundaries are needed. Protected-area systems represent a challenge in information management for public environmental organizations. Pro...

Network

Cited By

Projects

Projects (2)
Project
The effects of global warming on biodiversity are incontestable, as shown by several studies dealing with changes in phenology, distribution range and even extinctions. Rather than accumulating evidence and modelling warming-driven shifts in distribution range by means of presence-background models, we urgently need to develop more realistic models considering all the possible organisms' responses to warming, such as shifts in dispersal ability, life-cycle phenology, fitness-related traits and demography. RESURRECT faces this challenge by carrying out a resurrection approach on the annual plant Arabidopsis thaliana, which will provide data on actual change in fitness and genomic diversity of populations over a period of 15 years. The resurrection approach will quantify past and contemporary performance in field conditions of populations by comparing the ancestors and their descendants over generations. RESURRECT takes advantage of the collection of A. thaliana populations from the Iberian Peninsula and Morocco, which was created by the PI of this project proposal and his close collaborators in early 2000s and that has been growing since then. In this project, we will re-sample known populations across the region, from which seed from populations sampled at least 15 years ago was properly stored. After a single multiplication experiment to remove aging effects from ancestor seeds and maternal/environmental effects from descendant seeds, field experiments will quantify variation in life-cycle phenology and fitness-related traits in study populations over time. Besides, whole-genome sequencing on ancestors and descendants will allow the evaluation of temporal changes in the genomic composition of populations, which will be used to infer the major demographic processes that have taken place over time. Study populations will be sampled along a cool-warm climatic continuum across the Iberian Peninsula and Morocco, which depicts the two adaptive strategies of A. thaliana to succeed in such wide range of environmental conditions: early flowering with deep seed dormancy in warm environments and late flowering with weak seed dormancy in cool environments. RESURRECT will compile all the data on actual temporal change in fitness and genomic diversity to parameterise spatially-explicit hierarchical Bayesian models to quantify, not only changes in distribution range with warming, but temporal changes in life-cycle phenology and genomic composition in a warmer near future by considering the underlying processes accounting for such changes (e.g. rapid evolution, genetic drift, demography). It is worth emphasising that RESURRECT will adapt an existing spatially-explicit hierarchical Bayesian model, which was a major outcome of the last granted project of the research team in this call, to address the goals of this project proposal. RESURRECT will also make use of the vast ecological and genetic knowledge of natural A. thaliana populations accumulated by the research team during four consecutive granted projects since 2006. The thorough knowledge of the study system is also relevant to parameterise in detail other parameters that will increase realism of models (e.g. dispersal kernels). Finally, the research team is committed to increase the awareness of the resurrection approach to quantify the effects of warming on biodiversity within the research community but also among decision-makers in climate change adaptation and mitigation.
Archived project
BLACKBOX deals with the genetic mechanisms and developmental processes accounting for genetic variation in life-cycle traits under selection to better understand adaptive evolution in A. thaliana. The project will will evaluate the effect of historical and contemporary ecological factors on current patterns of within- and among-population genetic variation. It will carry out comparisons between quantitative genetic differentiation and neutral genetic differentiation to assess the adaptive value of seed dormancy and flowering time. Finally, the project will develop demographic distribution models to explore how the plant adjusts its life cycle to current and future heterogeneous environments.