Gonzalo Munoz Arroyo

Gonzalo Munoz Arroyo
Universidad de Cádiz | UCA · Department of Biology

About

51
Publications
12,079
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690
Citations
Citations since 2016
16 Research Items
349 Citations
2016201720182019202020212022020406080100120
2016201720182019202020212022020406080100120
2016201720182019202020212022020406080100120
2016201720182019202020212022020406080100120

Publications

Publications (51)
Article
Understanding how fisheries influence seabird distribution is critical in the development of sustainable fisheries management. Species distribution models were applied to analyse the influence of the fishing footprint, discards, and oceanographic factors on seabird attendance patterns to trawlers in the Gulf of Cádiz. More than 30 species of seabir...
Article
Some migratory seabird populations have declined sharply in recent decades. Monitoring their migratory movements from strategic locations provides a useful tool to understand their phenology and estimate their population sizes. During the autumn 2020 and spring 2021 migration periods, we conducted a total of 183 hours of counts of two auk species,...
Article
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This study presents data on the directional flying behaviour of the five most abundant seabird species migrating across the Strait of Gibraltar in relation to the wind, as observed from the north coast, based on radar tracking, and identified to species level by visual observations. A total of 318 seabird trajectories were analysed, illustrating th...
Article
Quantifying factors that influence marine predator distributions is essential to understanding the current and future change in marine biodiversity. Here, we test whether marine predator distribution relates to prey, or is better predicted by other specific habitat features. We examine the correlation between spatial distribution of three seabird s...
Book
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First visual guide of the most common and/or curious animal species (25 species) and macroalgae (25 species) of the intertidal rocky shores of La Caleta (Cadiz) and associated intertidal rocks.
Book
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New visual guide of the most common and/or curious animal species (54 species) and macroalgae (52 species) of the intertidal rocky shores of La Caleta (Cadiz) and associated intertidal rocks. They include more than twice of the species that appeared in the guide published in 2019. Two of the added animal species were recently described as new to Sc...
Article
Full-text available
The surge of research on marine litter is generating important information on its inputs, distribution and impacts, but data on the nature and origin of the litter remain scattered. Here, we harmonize worldwide litter-type inventories across seven major aquatic environments and find that a set of plastic items from take-out food and beverages large...
Article
1. Spatial modelling is an important research tool to improve our knowledge about the distribution of wildlife in the ocean. Using different modelling techniques (MaxEnt and a generalized linear mixed model), a predictive habitat suitability model was developed for one of the most threatened seabirds in the world: the Balearic shearwater, Puffinus...
Article
Full-text available
The expansion of marine protected areas in pelagic areas has been crucial to achieve sufficient protection of the oceans. However, there is still some controversy about whether these protected areas actually cover the vital areas for some species. We investigate the summer distribution of the critically endangered Balearic Shearwater and its overla...
Article
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Migratory animals are affected by various factors during their journeys, and the study of animal movement by radars has been instrumental in revealing key influences of the environment on flying migrants. Radars enable the simultaneous tracking of many individuals of almost all sizes within the radar range during day and night, and under low visibi...
Article
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The Iberian Peninsula harbours 24 taxa of native large branchiopods (LBs). Most of them inhabit Mediterranean temporary ponds, which are priority habitats under the EU Habitats Directive. In this work, Iberian LBs were evaluated using IUCN Red List criteria based on geographic range (extent of occurrence, area of occupancy, number of locations, hab...
Conference Paper
Full-text available
En el presente trabajo se describen las actuaciones dirigidas a la implementación y utilización con fines docentes de un laboratorio natural de Hidrogeología junto al Campus de Puerto Real de la Universidad de Cádiz, en el Parque Metropolitano Marisma de Los Toruños y Pinar de La Algaida. Esta zona protegida se encuentra a su vez ubicada dentro del...
Article
Full-text available
The Balearic Shearwater Puffinus mauretanicus is considered one of the most threatened seabirds in the world, with the breeding population thought to be in the range of 2,000–3,200 breeding pairs, from which global population has been inferred as 10,000 to 15,000 birds. To test whether the actual population of Balearic Shearwaters is larger than pr...
Article
Full-text available
The Balearic Shearwater Puffinus mauretanicus is considered one of the most threatened seabirds in the world, with the breeding population thought to be in the range of 2,000–3,200 breeding pairs, from which global population has been inferred as 10,000 to 15,000 birds. To test whether the actual population of Balearic Shearwaters is larger than pr...
Article
Full-text available
The Balearic shearwater Puffinus mauretanicus is the most threatened seabird in Europe. Several recent research and conservation programmes from different countries (Spain, Portugal, France, UK and Ireland), using various methodologies such as colony monitoring, at-sea surveys, tracking and coastal censuses, brought new information about the popula...
Article
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— Wind farms have a negative impact on several animal populations, with birds and bats assumed to be among the most heavily affected taxa. In addition to the extensive development of wind power on land, currently several European countries have offshore wind farms (OWFs) in operation, as well as proposals to build many more. Considering that seabir...
Conference Paper
Full-text available
The Balearic Shearwater Puffinus mauretanicus is considered the most threatened seabird in Europe, based on a prediction of extinction within 3 generations in average. Such prediction was computed in 2004, based on a population estimate of 2,000 breeding pairs at that time. However, the breeding population has been recently updated to 3,193 pairs....
Article
Full-text available
In some conservation situations, there is a need for estimates of numbers of seabirds migrating past a specific site, such as sites of proposed offshore wind farms. Migration counts from points strategically located on the coast can be a reliable and effective method of reaching this goal. We propose a consistent and statistically robust method for...
Article
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The Lesser Spotted Eagle (LSE) migrates to its winter quarters via the eastern Mediterranean corridor. During 1998 to 2009, 47 LSEs have been registered in the Strait of Gibraltar during a monitoring program of bird migration. All observations were made between 6 August to 12 October (mean 16 September, median 12 September). Of thirteen age-identif...
Article
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Rüppell’s Vulture Gyps rueppellii is an endemic from a relatively narrow belt of arid sub-Saharan Africa. This species has suffered a population decline in most of its distribution area, mainly in West Africa. Generally, it is considered as non-migratory, although daily foraging movements of up to 150–200 km have been recorded. However, in the last...
Article
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Long-distance migration is a major part of the life cycle of many seabirds. The main processes driving local movements within those long-distance migratory movements are essentially unknown. Here, we studied detailed patterns of the movements with respect to distance from land of the most abundant seabird species migrating across the northernmost p...
Conference Paper
Full-text available
The Migres Programme, formed by the Department of the Environment of the Andalusian Regional Government and coordinated by the Migres Foundation, includes long term cenusing of seabirds through the Straits of Gibraltar (Migres Marinas). Here the preliminary results of the project are given. Nearly 40 species of seabirds have been detected in the St...
Conference Paper
Full-text available
RESUMEN Se muestra el método de análisis de los cronotipos para caracterizar las comunidades migratorias de aves en un ámbito geográfico concreto. Estos cronotipos son grupos de especies cuyas fenologías de paso son más parecidas entre sí de lo que cabría esperar por azar. A modo de ejemplo, se muestra la aplicación de este análisis a los datos del...
Conference Paper
Full-text available
SUMMARY The results are given of intensive censusing of Balearic Shearwaters Puffinus mauretanicus during post breeding migration through the Strait of Gibraltar. A total of 12.270 Balearic Shearwaters were counted exiting the Mediterranean to the Atlantic in the course of 239 hours watching between 25 May and 9 July 2007 (approximately 35.7% of da...
Chapter
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Migres Program is a project, whose key objective is the long-term scientific monitoring of the migratory patterns of birds in the Strait of Gibraltar. This project is financed by the Regional Government of Andalucía and coordinated by Migres Foundation. This article contains the different monitoring campaign carried out on 2009: postnuptial soaring...
Chapter
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Autumn bird migration is well known across the Strait of Gibraltar, southern Spain. However, spring migration at the Strait is both one of the most spectacular and unknown natural phenomenon. Due to this reason we started a project on 2007 with the objective to design and conduct a long term monitoring program to study the spring soaring bird migra...
Article
Full-text available
Censusing seabirds from coastal areas requires reliable estimates of bird numbers and the distances of the birds from the coastline. Logistical constraints make visual estimation of distances the only feasible method in many studies. We tested the accuracy of visually estimated offshore distances of six migratory seabird species in the Strait of Gi...
Article
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We studied the visible migration of small diurnal migrants (Passeriformes and related orders) in the Strait of Gibraltar during 2008 through a net- work of fixed observatories, using a constant effort methodology. The vis - ible diurnal migration in the Strait of Gibraltar is dominated by finches, swifts, swallows and house martins, bee-eaters and...
Article
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We measured the hematocrit from greater flamingo chicks Phoenicopterus roseus over 4years to test whether this blood parameter was related to the nutritional condition of chicks, as there are controversial results on whether hematocrit may be used as an index of body condition. We also tested whether hematocrit increased with chick age, as there wo...
Article
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Greater flamingos in southern Spain foraged in areas distant from a breeding site, spending 4-6 days in foraging areas between successive visits to the colony to feed their chicks. During four years, we took blood samples from chicks to ascertain whether there were interannual variations in several blood parameters, indicative of food quality and f...
Article
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Many studies have demonstrated that composition of macrobenthos is influenced by sediment characteristics and shore width. Moreover, the abundance and spatial distribution of waders in non-breeding season principally depend on the distribution, abundance and availability of their main prey species. According to this, it is possible to establish a r...
Article
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We studied the consequences of intraclutch egg-size variation in Kentish Plovers Charadrius alexandrinus in southern Spain to test the hypothesis that females allocate resources preferentially to eggs with the greatest survival potential. Second eggs were larger and had a greater hatching success than the other eggs in a clutch. However, we did not...
Article
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Offspring size is a very important life-history trait that may be affected by maternal effects and environmental conditions. We studied variation in egg size and within-clutch symmetry variation in egg volume in Kentish Plovers Charadrius alexandrinus in southern Spain over six years. Repeatability of egg volume among years was high. Repeatability...
Article
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The aim of this study was to examine whether the energetic costs of reproduction explain offspring desertion by female shorebirds, as is suggested by the differential parental capacity hypothesis. A prediction of the hypothesis is that, in species with biparental incubation in which females desert from brood care after hatching, the body condition...
Article
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The use of intertidal mudflats and adjacent supratidal salinas by foraging waders was studied, including a time-foraging budget in winter and during the period prior to the spring migration. The predictions of three hypotheses that might explain why waders use the supratidal habitat, 'preference, disturbance and supplementary food hypotheses', are...
Article
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We examined factors affecting renesting rates in a population of Kentish Plovers (Charadrius alexandrinus) in southern Spain over six breeding seasons. We show that renesting was mainly constrained by time, and not by female body condition. Renesting partially compensated for initial clutch losses. The interval from loss of the first clutch to init...
Article
Full-text available
In the Kentish Plover Charadrius alexandrinus one of the adults, typically the female, deserts the brood when the chicks are a few days old. Once parental care is terminated, adults may initiate a second nesting attempt if sufficient time remains within the season. For these nests, individuals pair with different mates from those of the first nesti...
Article
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We studied reuse of nesting scrapes within breeding seasons by Kentish Plovers (Charadrius alexandrinus) in an inland lake of southern Spain over six years. Overall, 5.6% of original nests were reused at least once. We tested whether nest reuse is adaptive, but found no differences in breeding success between those pairs that reused nests and those...

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