Marta Cruz-Flores

Marta Cruz-Flores
La Rochelle Université · LIttoral ENvironnement et Sociétés (LIENSs)

PhD
Postdoctoral researcher at LIttoral ENvironnement et Sociétés (LIENSs)

About

29
Publications
4,282
Reads
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77
Citations
Introduction
I am a post-doctoral researcher working on the demographic effects of toxic contamination on Arctic seabirds at DeToxSea project (https://martacruzflores.wixsite.com/detoxseaproject), funded by the Marie Curie Actions. My research focuses on seabird ecology, with a keen interest in their population dynamics, and their spatial and trophic ecology. Personal website: https://martacruzflores.wixsite.com/research
Additional affiliations
April 2014 - July 2014
Max Planck Institute for Ornithology
Position
  • field assistant
Description
  • "How social environments affect the selection on animal behavioural types"
September 2012 - June 2013
Complutense University of Madrid
Position
  • Lab assistant
Description
  • "Physiological mechanisms of resistance to parasitic infections in birds"
June 2011 - August 2011
Spanish National Research Council
Position
  • field and lab assistant
Description
  • "Studies on the spiny-footed lizard (Acanthodactylus erythrurus) behavioral: the role of red coloration in juveniles"
Education
October 2008 - September 2013

Publications

Publications (29)
Article
Climate change has repeatedly been shown to impact the demography and survival of marine top predators. However, most evidence comes from single populations of widely distributed species, limited mainly to polar and subpolar environments. Here, we aimed to evaluate the influence of environmental conditions on the survival of a tropical and migrator...
Presentation
Full-text available
In colonial seabirds, ecological divergence may occur in the absence of physical barriers, driven by the isolation of populations due to distance, or the adaptation to local environment. In migratory seabirds, the geographic segregation among breeding populations can persist year round (i.e., strong migratory connectivity) when populations breeding...
Article
Light‐level geolocators are popular bio‐logging tools, with advantageous sizes, longevity, and affordability. Biologists tracking seabirds often presume geolocator spatial accuracies between 186‐202 km from previously‐innovative, yet taxonomically, spatially, and computationally limited, studies. Using recently developed methods, we investigated wh...
Article
Full-text available
The conservation of migratory marine species, including pelagic seabirds, is challenging because their movements span vast distances frequently beyond national jurisdictions. Here, we aim to identify important aggregations of seabirds in the North Atlantic to inform ongoing regional conservation efforts. Using tracking, phenology, and population da...
Article
Costs of reproduction on survival have captured the attention of researchers since life history theory was formulated. Adults of long-lived species may increase survival by reducing their breeding effort or even skipping reproduction. In this study, we aimed to evaluate the costs of current reproduction on survival and whether skipping reproduction...
Article
Full-text available
Migratory marine species cross political borders and enter the high seas, where the lack of an effective global management framework for biodiversity leaves them vulnerable to threats. Here, we combine 10,108 tracks from 5775 individual birds at 87 sites with data on breeding population sizes to estimate the relative year-round importance of nation...
Book
Full-text available
In the present publication we analyzed the migration and foraging ecology of Bulwer’s petrel (Bulweria bulwerii) in one locality at Canary Islands, based in the results obtained by the University of Barcelona in the framework of different research and conservation seabird projects. This monograph describes the foraging ecology and the year-round...
Article
Full-text available
Using geolocator-immersion loggers, we tracked for the first time the migration of one Cory’s Shearwater Calonectris borealis fledgling, from its breeding colony in the Canary Islands, and along its first year of life. The juvenile bird initially followed the same migratory path as the adults but visited different areas of the Central and the South...
Presentation
Foraging distributions of colonial central place foragers are shaped not only by environmental factors but also by population parameters: larger colonies will deplete resources around the colony and will therefore have larger foraging areas, but parapatric competition will often cause spatial segregation, leading to little overlap among foraging ar...
Article
Full-text available
Studying the movements of oceanic migrants has been elusive until the advent of several tracking devices, such as the light-level geolocators. Stable isotope analysis (SIA) offers a complementary approach to infer areas used year-round, but its suitability in oceanic environments remains almost unexplored. To evaluate SIA as a tool for inferring mo...
Data
Total number of GLS loggers deployed and recovered by colony, and number of GLS loggers included in the present study. Only GLS loggers with data for the last non-breeding period before recovering were included in this study, in order to relate the non-breeding areas with the feathers moulted during the non-breeding period and sampled at GLS logger...
Data
Biplots of δ15N and δ13C values for P1 (a), S8 (b) and R6 (c) feathers sampled from tracked individuals of Bulwer’s petrel. In each plot, we show isotopic values and Standard Bayesian Ellipses by non-breeding areas (depicted in triangles and discontinuous contours for birds wintering in the Central Atlantic, and in circles and continuous contours f...
Data
Accepted values of the standard material used in the stable isotopic analysis performed in this study, mean measured (±standard deviation) in the samples of standards materials used, minimum and maximum values for all runs, and number of samples (n). (DOCX)
Data
Boxplots of δ15N (a) and δ13C (b) values for the 1st (P1), 3rd (P3), 5th (P5), 7th (P7) and 10th (P10) primary feathers, the 1st (S1), 12th (S12) and 8th (S8) secondary feathers of Bulwer’s petrels found dead at each colony: Vila (in blue, n = 8), M. Clara (green, n = 8), Raso (orange, n = 9) and Cima (red, n = 4). The 6th rectrix (R6) of corpses a...
Data
Isotopic data of corpses and tracked Bulwer’s petrels included in the article. (DOCX)
Conference Paper
La dieta y las áreas de alimentación son aspectos básicos de la ecología de cualquier especie, y conocerlos es imprescindible para su adecuado manejo y conservación. Sin embargo, sólo con los avances tecnológicos recientes, es posible abordarlos en aves marinas de pequeño porte como el petrel de Bulwer (Bulweria bulwerii). De 2015 a 2017 en Montaña...
Presentation
Conservation policies for the protection of marine biodiversity are being implemented in many international management treaties worldwide. The process of identification of Marine Protected Areas (MPAs) is often based on the spatial preference of threatened species, such as many marine predators. Multi-colony tracking studies comprising a wide geogr...
Presentation
It is well known that colonial breeders are spatially constrained by their need to return to the colony to attend their rearing duties. This behaviour results in a decreasing density of foraging birds with the distance to the colony. In addition, the effect of intraspecific competition, which grows with colony size, also increases the length of for...
Conference Paper
Full-text available
Geolocators are revealing new aspects of seabird migratory dynamics, but its price and size and some constraints about bird recapture limit their use. Alternatively, stable isotope analysis (SIA) on feathers may allow inferring non-breeding distributions of seabirds, but its suitability in tropical and subtropical species remains unexplored. Here,...
Conference Paper
Geolocators are revealing new aspects of the migratory dynamics of seabirds, but due to price, size, or limitations in recapturing birds, geolocators are not always feasible to use. In this regard, stable isotope analyses (SIA) on feathers have emerged as an alternative tool to infer their non-breeding areas. In the marine environment, the majority...
Presentation
Foraging strategies of colonial central-place foragers, such as breading seabirds, are spatially constrained by their need to return to the colony to attend to their rearing duties and by a denso-dependent competition for resources that increases with colony size. Moreover, in areas where the foraging ranges of several breeding colonies potentially...

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Projects

Project (1)
Project
Since 2011 we are researchig about migration of Spanish birds, thanks to new thecnologies (satelite transmiters, GSM trasmitters, GPS data loggers, geolocators, nano-GPS).