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January 2011 - present
July 2008 - December 2016
September 1993 - June 2007
Education
August 1987 - May 1993
August 1984 - May 1997
November 1977 - December 1983
Publications
Publications (56)
Necesidades y oportunidades 1 Mensajes principales • La capacitación multidimensional dirigida a los profesionales de la restauración en América Latina ha avanzado notablemente en los últimos diez años, aunque todavía se concentra en la dimensión ecológica. • La participación frecuente de los profesionales de la restauración en diferentes tipos de...
p>Restoring degraded lands is high on the international agenda and the number of restoration projects in Latin America and the Caribbean (LAC) has increased considerably over the past decades. However, the variety of approaches used have not been systematically documented and analyzed. We aimed to develop a restoration typology as a function of the...
The ambitious restoration commitments made by Latin American countries have increased the demand for professionals having multidimensional training in ecological restoration; however, little is known about the kind of training that professionals are currently receiving. Through an online survey, we explored whether restoration professionals in Lati...
The ambitious restoration commitments made by Latin American countries have increased the demand for professionals having multi‐dimensional training in ecological restoration; however, little is known about the kind of training that professionals are currently receiving. Through an online survey, we explored whether restoration professionals in Lat...
In response to a critique by Higgs et al., this article clarifies the content and intent of the Society for Ecological Restoration’s (SER) International Standards for the Practice of Ecological Restoration. Higgs et al. expressed concern that the SER Standards are not sufficiently underpinned by principles and risk disenfranchising some practitione...
Ecological restoration is quickly expanding and becoming more ubiquitous. It has expanded from isolated location‐specific projects to large‐scale initiatives that answer to national and international policy.
El "Primer", o “Principios de la Restauración Ecológica (RE)”, publicado en 2004, es el documento de referencia de la disciplina. Resume el paradigma y establece el marco conceptual, objetivos, y definiciones. El planteo de ecosistemas de referencia, la distinción entre RE y ecología de la restauración (la práctica y la
ciencia), o la identificació...
Los países andinos tropicales comparten la cultura hispánica, un mismo lenguaje y están atravesados por la
cordillera más larga del mundo. Pero por otro lado, exhiben una gran heterogeneidad la cual se refleja en la
forma como cada país andino aborda la restauración ecológica. La humanidad está pasando por un momento
histórico en el cual los países...
In the cloud forests of the central range of the Colombian Andes, we discovered a species of katydid (Orthoptera: Tettigoniidae) that imitates mosses to an uncanny degree and is exceedingly difficult to detect. The camouflage exhibited by this particular katydid seems quite specific. We discuss the evolutionary consequences of this sort of speciali...
The novel ecosystem (NE) concept has been presented as a new paradigm or framework for ecological restoration. However, NEs are imprecisely defined for any practical applications and are based on theory not evidence. Furthermore, the NE concept remains descriptive, rather than prescriptive, and offers no testable predictions for researchers or conc...
Management of complex ecosystems is a difficult process that involves multiple factors and stakeholders. In most cases, the interactions of these factors and stakeholders’ trade-offs are not considered quantitatively in the design and management of ecosystems. To address these issues mental modeling is useful for eliciting stakeholder objectives an...
The field of ecological restoration (ER) is now challenged by the need to
achieve recovery at large spatial scales. Such scaling up requires technological
expertise, inclusiveness and clarity of goals, and correct governance schemes
and monitoring protocols, which are often absent from ER projects in most
countries. We analyze the case of Colombia...
The complex nature of coupled human-natural systems often hinders the identification of forces and mechanisms causing observed environmental changes. The analysis of long-term time series can allow better understanding of those interactions and hence inform more adapted restoration and management programs. However, long-term time series of ground-m...
The field of ecological restoration (ER) is now challenged by the need to achieve recovery at large spatial scales. Such scaling up requires technological expertise, inclusiveness and clarity of goals, and correct governance schemes and monitoring protocols, which are often absent from ER projects in most countries. We analyze the case of Colombia...
At an historic moment, when Colombia is emerging from 60 years of armed conflict, the 7-year-old Colombian Network for Ecological Restoration (Red Colombiana de Restauración Ecológica [REDCRE]) has created four subnational nodes, and is actively developing several more. All of this is taking place in the context of the Ibero-American and Caribbean...
Responding to our critique of the novel ecosystem concept [1], Hobbs et al. [2] misrepresent our points of view, so we begin by clarifying our position. First, we do not deny the existence of anthropogenically transformed ecosystems; cities, pastures, agricultural fields, or open-pit mines are real and have accompanied humans for millennia. We agre...
The 'novel ecosystem' concept has captured the attention of scientists, managers, and science journalists, and more recently of policymakers, before it has been subjected to the scrutiny and empirical validation inherent to science. Lack of rigorous scrutiny can lead to undesirable outcomes in ecosystem management, environmental law, and policy. Co...
El propósito de este documento es el de analizar cómo ha evolucionado el campo de la restauración ecológica en Colombia, su estado actual y los retos y oportunidades para su expansión en varios aspectos de su dimensión biofísica, social, financiera e institucional. Cuáles son las principales barreras en implementar estos proyectos y qué se ha apren...
Restoration practitioners adopt a multiplicity of approaches that range from basic trial and error, and site-specific efforts, to complex experimental designs that test cutting edge theoretical hypotheses. We classify these different strategies to understand how restoration is planned and executed, and to contribute to the discussion on certificati...
Metaphors are common in our ecological and conservation language. They help us understand complex issues and communicate them to different audiences. We propose two new metaphors: ecosystem leaks and ecosystem clogs that can help us understand the role of flows among ecosystems (inflows and outflows), the impacts of anthropogenic perturbations of t...
The multi‐temporal and spatial scale interaction of history, geography, and evolution are responsible for Colombia's extreme diversity. This chapter first describe Colombia's biological complexity and its conservation context. Then, it presents some of the main challenges for conservation professionals, managers, and decision makers in their...
strong> El manejo actual del recurso hídrico en la cuenca del Tempisque es insostenible y se predice que empeorará dadas las proyecciones de aumento de temperatura y condiciones de sequia en el futuro cercano. Describimos aquí los planes para realizar un análisis cuantitativo del suministro y la demanda del recurso hídrico en esta cuenca y explorar...
The Reducing Emissions from Deforestation and Forest Degradation (REDD+) mechanism has the potential to provide the developing nations with significant funding for forest restoration activities that contribute to climate change mitigation, sustainable management, and carbon-stock enhancement. In order to stimulate and inform discussion on the role...
Resumen En los Andes Centrales Colombianos, la extracción intensiva de madera tuvo su apogeo en la primera mitad del siglo XX, dejando muchas especies de maderas finas al borde de la extinción. Algunas zonas han sido protegidas desde entonces pero se desconoce si estas especies han logrado recuperarse o si requieren esfuerzos adicionales. Evaluamos...
Degraded lands in the Colombian Andes have been restored by means of monospecific tree plantations of native and exotic species, and by abandoning lands to natural regeneration. Both methods rapidly produce a vegetation cover that helps to stabilize soils, but the value of resulting ecosystems for wildlife needs to be evaluated. We assessed the eff...
Tropical forests frequently experience the opening and closing of canopy gaps as part of their natural dynamics. When fragmented, the forests are also exposed to edges, which (at least in the lowlands) cause increased mortality on the fragment's periphery and— depending on the fragment size—also on the forest interior. Here we explore if the presen...
No other line of practice requires application of science more urgently than conservation. Here we explore several elements that must be put in place to establish lines of communication between scientists and managers of protected areas. First, it is necessary that scientists are aware of the information needs of managers, that they produce the rel...
Inflorescences of the terrestrial aroid Xanthosoma daguense in the Andes of Colombia are visited by Dinastinae and Nitidulidae beetles. Plants produce one inflorescence at a time, which is pollinated during the first night of opening. Dynastine beetles act as pollinators, whereas Nitidulids lay eggs in the inflorescence and the larvae damage the se...
Chinese ash (Fraxinus chinensis) is an exotic tree species that has been used in non-commercial monospecific plantations for revegetation programs in the Central Andes of Colombia. At the Otn river watershed, these plantations occur in patches intermixed with old pastures, oak forests, and successional forests. In this heterogeneous landscape, the...
This study describes a pollination system in a species of Araceae that involves three species of beetle, one of which is also a fruit predator. In a tropical cloud forest in Colombia, inflorescences of Xanthosoma
daguense opened at dusk, releasing a sweet scent and raising their temperature 1–3 °C. Soon after, two species of Scarabaeidae (Dynastina...
Forest fragmentation is the large-scale transformation of a forested landscape to one in which remnant forest patches are isolated in a matrix of anthropogenic habitats. Forest fragmentation is a major cause of loss of biological diversity, in particular in the species-rich wet tropics, where landscape transformation is an ongoing process (Whitmore...
tnJ 1ndian;i are cl~rrently developing techniques for large-scale planting of chestnut, which we hope to hegin within this decade. Wc are still f<~rinu-laring plans to implement these rcchniilrles. The rimher value of chesmur may promtire its wi~lc-scale planting, uhich may also he of great henefit to wildlife. Indica-ticins ate that wildlife level...
Andean alder (Alnus acuminata) is a tree species often used in revegetation programs in the Colombian Andes, because it is native to the area and grows rapidly even in nitrogen-poor soils. Previous work implied that Andean alder plantings might not lead to as rich a diversity of native vegetation as would natural regeneration. At Ucumarı́ Regional...
Tropical hummingbirds often forage in mixtures of several plant species. As a result, pollen is often transferred among heterospecific flowers. The "Sexual Architecture Hypothesis," a paradigm of pollination ecology and angiosperm evolution, suggests that the severity of such interspecific pollen transfer should reflect the similarity in the archit...
Edges are presumed to have deleterious consequences for the organisms that remain in forest fragments. However, there is substantial discrepancy among recent studies about the existence and intensity of edge effects. Most studies have focused on seeking simplistic and static patterns. Very few have tested mechanistic hypotheses or explored the fact...
In Gainesville, Florida, the coastal morning glory varies considerably in flower size, shape and stigma-anther separation. Variation in flower size was caused by variation within genets and, more drastically, by temperature fluctuations. The hawk moth Enyo lugubris visited flowers from time of anthesis until sunrise, when bumble bees Bombus pennsyl...
Typescript. Thesis (Ph. D.)--University of Florida, 1993. Vita. Includes bibliographical references (leaves 84-92).
