Aldo Croquer

Aldo Croquer
The Nature Conservancy

PhD in Biological sciences

About

135
Publications
33,236
Reads
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2,109
Citations
Citations since 2016
57 Research Items
1161 Citations
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Introduction
I have dedicated my career to understand the dynamics of coral reefs with particular interest in coral diseases. I had participated in different projects aimed to monitor coral reef health across the Caribbean and other parts of the world. While still interested in coral disease science, I recently moved to The Dominican Republic to start working as the coral manager of TNC in the island to work on reef monitoring, conservation and rehabilitation of coral reef ecosystems.
Additional affiliations
August 2019 - present
The Nature Conservancy
Position
  • Manager
Description
  • Lead coral conservation, monitoring, restoration and education efforts in the DR.
May 2017 - May 2017
Simon Bolívar University
Position
  • Professor
January 2010 - present
Simon Bolívar University
Position
  • Professor (Associate)
Education
January 2019 - September 2020
Simon Bolívar University
Field of study
  • Biology of Organisms

Publications

Publications (135)
Article
Full-text available
Monitoring programs can help understand coral disease dynamics. Here, we present results from a national program in the Dominican Republic (DR) aimed at evaluating coral diseases 3 times a year following a nested spatial design. Prevalence of coral diseases in DR varied from sites to regions, suggesting that disease dynamics can be driven by local...
Technical Report
Full-text available
Chapter 12. Status and trends of coral reefs of the Caribbean region, pp. 1-25. In: Souter, D., Planes, S., Wicquart, J., Logan, M., Obura, D., & Staub, F. (Eds.) Status of Coral Reefs of the World: 2020. Global Coral Reef Monitoring Network, International Coral Reef Iniciative, Australian Institute of Marine Science, & Australian Governement.
Article
Full-text available
Climate change has become the greatest threat to the world's ecosystems. Locating and managing areas that contribute to the survival of key species under climate change is critical for the persistence of ecosystems in the future. Here, we identify ‘Climate Priority’ sites as coral reefs exposed to relatively low levels of climate stress that will b...
Preprint
Full-text available
Crustose Coralline Algae (CCA) is a well-known settlement inducer for stony corals and, ultimately, recruitment, a vital component for reef growth and resilience. However, potential impacts of diseased CCA on larval settlement are not fully understood, especially on particular coral species. As oceans continue to warm, coral larvae need to be able...
Article
Full-text available
Los arrecifes coralinos se consideran ecosistemas análogos a los bosques lluviosos, en términos de biodiversidad y variedad de bienes y servicios ecosistémicos que proveen. La pérdida acelerada de áreas coralinas a escala global es conocida como la crisis de los arrecifes, la cual es particularmente tangible en el Caribe. Aunque se sabe que la comb...
Article
Full-text available
In the 1980s, two overlapping dramatic events structurally changed Caribbean reefs: the massive die-offs of Diadema antillarum and acroporid corals. Four decades later, we present new reports of extensive D. antillarum mortality and Stony Coral Tissue Loss Disease acting simultaneously in southeastern Dominican Republic.
Article
Full-text available
Acropora cervicornis is one of the most important coral species in shallow reefs of the Caribbean as it provides habitat and structural complexity to several species of invertebrates and fish. However, the distribution range of A. cervicornis has shrunk and collapsed considerably in the last five decades, due to a combination of factors including t...
Article
Full-text available
The sea urchin Diadema antillarum is an herbivore that plays an important ecological role in controlling benthic community structure in Caribbean reefs. After the mass mortality documented between 1982-1983, their populations were reduced by 94-99% triggering a phase shift from coral to macroalgae-dominated benthic communities across the Caribbean....
Article
Full-text available
For several decades, white plagues (WPDs: WPD-I, II and III) and more recently, stony coral tissue loss disease (SCTLD) have significantly impacted Caribbean corals. These diseases are often difficult to separate in the field as they produce similar gross signs. Here we aimed to compare what we know about WPD and SCTLD in terms of: (1) pathology, (...
Article
Full-text available
Coral assisted fertilization, larval rearing and recruit propagation success in significant ecological scales, largely depend on scaling up and replicating these efforts in as many regions as possible. The Dominican Foundation for Marine Studies (FUNDEMAR) has become a pioneer of these efforts in the Dominican Republic, being the first institution...
Article
Full-text available
Over the past decade, coral restoration efforts have increased as reefs continue to decline at unprecedented rates. Identifying suitable coral outplanting locations to maximize coral survival continues to be one of the biggest challenges for restoration practitioners. Here, we demonstrate methods of using derivatives from imaging spectroscopy from...
Article
In an era of coral reef decline, coral restoration is receiving increasing attention, with many recent developments in culture and transplant techniques. However, how the ecological processes operating on coral reefs influence the success of restoration efforts remains largely unexplored, particularly during the first months after outplanting which...
Article
Full-text available
This dataset contains 2850 photographs of the seafloor in coral communities from Venezuela that were taken during 2017 and 2018. We used a hierarchical experimental design with four random factors representing four different spatial scales: (1) region (hundreds of kilometers), (2) localities (tens of kilometers), (2) reef sites (hundreds of meters)...
Article
Full-text available
Adaptation to changes in the delivery of ecosystem services while maintaining resilience of natural systems is one of the main challenges faced by multi-use marine protected areas (MPAs). To overcome this, it is crucial to improve our understanding of interdependencies among resource users and ecosystems. In this study we used networks to model the...
Book
Full-text available
La contribución de los Grupos de Trabajo I, II y III al Primer Reporte Académico de Cambio Climático (PRACC) de la Academia de Ciencias Físicas, Matemáticas y Naturales (ACFIMAN), bajo la coordinación científica de la Secretaría Académica de Cambio Climático (SACC) de la ACFIMAN, permite estudiar los datos e información relativos al cambio climátic...
Book
Full-text available
La contribución de los Grupos de Trabajo I, II y III al Primer Reporte Académico de Cambio Climático (PRACC) de la Academia de Ciencias Físicas, Matemáticas y Naturales (ACFIMAN), bajo la coordinación científica de la Secretaría Académica de Cambio Climático (SACC) de la ACFIMAN, permite estudiar los datos e información relativos al cambio climátic...
Preprint
Full-text available
Information on the status of the pillar coral Dendrogyra cylindrus across its global distribution range is needed to plan and implement effective conservation interventions at both the national and regional level. Knowledge on the species distribution and abundance on the southernmost edge of its range was limited to qualitative data gathered in th...
Article
Full-text available
Estimating variability across spatial scales has been a major issue in ecology because the description of patterns in space is extremely valuable to propose specific hypotheses to unveil key processes behind these patterns. This paper aims to estimate the variability of the coral assemblage structure at different spatial scales in order to determin...
Article
Full-text available
The characteristics of coral reef sampling and monitoring are highly variable, with numbers of units and sampling effort varying from one study to another. Numerous works have been carried out to determine an appropriate effect size through statistical power; however, these were always from a univariate perspective. In this work, we used the pseudo...
Article
Full-text available
Lionfish (Pterois volitans) have rapidly invaded the tropical Atlantic and spread across the wider Caribbean in a relatively short period of time. Because of its high invasion capacity, we used it as a model to identify the connectivity among nine marine protected areas (MPAs) situated in four countries in the Gulf of Mexico and the Caribbean Sea....
Article
Dendrogyra cylindrus sexual recruits have been reared ex situ, however, no record of recruits surviving outplanting to the reef exist. We report recruit survival after one year of outplanting to a nursery, proving D. cylindrus can overcome post-settlement bottlenecks in situ and indicating larval propagation might help restore this species.
Presentation
Full-text available
Esta es la presentación para la charla denominada: "Patrones de variación espacial en la abundancia de corales juveniles, de pocos centímetros a kilómetros: Caso de estudio en el Oriente de Venezuela" presentada en el XII Congreso Venezolano de Ecología el 21 de noviembre de 2020. En Venezuela, la mayoría de los estudios realizados se han centrado...
Presentation
Full-text available
Esta es la presentación para la charla denominada:"La historia de Playa Mero: Uso de modelos tridimensionales del bentos para estudiar las dinámicas ecológicas de corales juveniles en un arrecife perturbado.", presentada en el XII Congreso Venezolano de Ecología el 20 de noviembre de 2020. Esta presentación muestra algunos resultados de mi tesis de...
Article
Full-text available
Global and local stressors are causing the worldwide loss of coral cover and structural complexity at an unprecedented pace on reefs. In consequence, the habitat of coral reef fish has suffered a profound degradation affecting the abundance, biodiversity and species composition of this taxonomic group. Thus, understanding the link between coral ree...
Preprint
Full-text available
The characteristics of coral reef sampling and monitoring are highly variable, with numbers of units and sampling effort varying from one study to another. Numerous works have been carried out to determine an appropriate effect size through statistical power, however, always from a univariate perspective. In this work, we aimed to assess the pseudo...
Article
Full-text available
Coral disease research encompasses five decades of undeniable progress. Since the first descriptions of anomalous signs, we have come to understand multiple processes and environmental drivers that interact with coral pathologies. In order to gain a better insight into the knowledge we already have, we explored how key topics in coral disease resea...
Poster
Full-text available
Young coral ecological dynamics are fundamental to understand the recovery process of damaged reefs. In Venezuela there is a natural laboratory in Morrocoy National Park. Playa Mero reef coral cover declined from 40% to less than 5% after a massive dead event. Two decades after we asked why if there are young corals, they haven't been able to stabl...
Presentation
Full-text available
Coral recruitment refers to the processes allowing maintenance and renewal of coral communities. Recruitment success is therefore indispensable for coral reef recovery after disturbances. Recruitment processes are governed by a variety of factors occurring at all spatial and temporal scales, from centimetres to hundreds of kilometres. In the presen...
Poster
Full-text available
To date, we know that Caribbean Yellow Band Disease (CYBD) has direct effects on coral zooxanthellae and compromises detoxification mechanisms in the holobiont. However, little is known about the ability of diseased corals to recover after being exposed to xenobiotics. Because of this, we evaluated and to compared the detoxification response in he...
Poster
Full-text available
The implantation and development of new methods aimed to assess the health status of coral reefs is a tenet core for the conservation science of these systems. For years, coral reefs communities have been described in Venezuela; however, no efforts to classify the health status of these systems have been accomplished. Part of the problem is that re...
Article
Full-text available
Caribbean Coastal Marine Productivity (CARICOMP) was a basin-wide cooperative, international network of marine laboratories established in 1985. Recognizing major trends of change in coastal ecosystems and the importance of the linkages among them, our goal was to monitor synoptically with standardized methods the physical environment and to docume...
Preprint
Full-text available
Coral disease research encompasses five decades of undeniable progress. Since the first descriptions of anomalous signs, we have come to understand multiple processes and environmental drivers that interact with coral pathologies. In order to gain a better insight into the knowledge we already have, we explored how key topics in coral disease resea...
Article
Full-text available
[This corrects the article DOI: 10.1371/journal.pone.0188564.].
Chapter
Full-text available
Se discutió acerca de la importancia de la existencia de una robusta investigación orientada hacia la identificación de los impactos del cambio climático en los sistemas agrícolas animal y vegetal, a pesar de la incertidumbre asociada al análisis de diversas escalas y, a los métodos de simulación climática aplicables a escala país. Se advirtió sobr...
Article
Full-text available
Coastal ecosystems and the livelihoods they support are threatened by stressors acting at global and local scales. Here we used the data produced by the Caribbean Coastal Marine Productivity program (CARICOMP), the longest, largest monitoring program in the wider Caribbean, to evidence local-scale (decreases in water quality) and global-scale (incr...
Data
Mixed effect models results. Word file including non-linear mixed effect model fits for temperature and visibility. (DOCX)
Data
Site metadata. Word file including metadata for all CARICOMP stations included in the database and mixed effect model fits for temperature and visibility. (DOCX)
Data
CARICOMP environmental database. Text file including all CARICOMP’s weekly environmental data. (TXT)
Chapter
Full-text available
Octocorals (Cnidaria, Octocorallia) constitute a geographically widely distributed and common group of marine invertebrates commonly referred to as “soft-corals,” “sea fans,” “horny corals,” “sea feathers,” and “sea plumes.” They are found from shallow coastal habitats to mesophotic and abyssal depths. Octocorals are important members of most Atlan...
Article
Full-text available
Caribbean ciliate infection (CCI) and white band disease (WBD) are diseases that affect a multitude of coral hosts and are associated with rapid rates of tissue losses, thus contributing to declining coral cover in Caribbean reefs. In this study we compared tissue mortality rates associated to CCI in three species of corals with different growth fo...
Article
Full-text available
This study evaluated pollution levels in water and sediments of Península de Paraguaná and related these levels with benthic macrofauna along a coastal area where the largest Venezuelan oil refineries have operated over the past 60 years. For this, the concentration of heavy metals, of hydrocarbon compounds and the community structure of the macrob...
Data
Raw data. Major taxanomical groups recorded across years, sites and months along the western coast of Paraguná, Venezuela.
Data
Raw data. Polychaete families recorded across years, sites and months along the western coast of Paraguaná, Venezuela.
Data
Supplementary table. Enrichment factors (EF) of several heavy metals recorded in ten sediments along the western cpst of Paraguaná. EFs were calculated using Fe as metal of reference.
Data
Raw data. Chemical variables measured in water and sediments across years, months and sites along the western coast of Paraguaná, Venezuela.
Article
Full-text available
Healthy and diseased corals are threatened by different anthropogenic sources, such as pollution, a problem expected to become more severe in the near future. Despite the fact that coastal pollution and coral diseases might represent a serious threat to coral reef health, there is a paucity of controlled experiments showing whether the response of...
Article
Full-text available
In the past decade, significant efforts have been made to describe fish-habitat associations. However, most studies have oversimplified actual connections between fish assemblages and their habitats by using univariate correlations. The purpose of this study was to identify the features of habitat forming corals that facilitate and influences assem...
Data
Raw Data geometry explain fish assemblage Raw data containing the abundance of fishes and the geometrical characteristics of the A. cervicorn is colonies.
Article
Full-text available
Background: This study compiles the diversity of sea anemones in different shallow habitats (i.e. rocky shores, coral reefs, mangroves and sandy bottoms) in several locations of Venezuela, including the most important marine reserves of Venezuela: Morrocoy National Park, Mochima National Park, Archipiélago de Los Roques National Park, Laguna de La...
Article
Full-text available
Eight years ago (2007), the distribution and status of Acropora palmata was quantified throughout Los Roques archipelago in Venezuela. The aim was to produce a baseline study for this species which combined population genetics with demographic data. The results highlighted that A. palmata had the potential to recover in at least 6 out of 10 sites s...
Chapter
Octocorals (Cnidaria, Octocorallia) constitute a geographically widely distributed and common group of marine invertebrates commonly referred to as “soft-corals,” “sea fans,” “horny corals,” “sea feathers,” and “sea plumes.” They are found from shallow coastal habitats to mesophotic and abyssal depths. Octocorals are important members of most Atlan...
Presentation
Full-text available
En los últimos 30 años Acropora cervicornis ha experimentado un descenso en su abundancia a lo largo del Caribe hasta el punto de caer en la categoría de “peligro crítico” en la Lista Roja de la IUCN. A pesar de su importancia regional en Los Roques, su estatus poblacional no ha sido evaluado. El objetivo de este estudio fue establecer el estado y...