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Publications (76)
Three new species of Sciodaphyllum (Araliaceae) are described and illustrated, all from highland areas in the northern part of the eastern Andean Cordillera of Colombia. Sciodaphyllum bipyrenum is distinguished by its bicarpellate ovary with a disc that bulges above the calyx, a bifid stylar column in fruit, and fruits with two-ribbed, triangular o...
Wood anatomy plays a key role in plants' ability to persist under drought and should therefore predict demography. Plants balance their resource allocation among wood cell types responsible for different functions. However, it remains unclear how these anatomical trade‐offs vary with water availability, and the extent to which they influence demogr...
Canopy lianas differ considerably from trees in terms of wood anatomical structure, and they are suggested to have a demographic advantage—faster growth and higher survival—than trees. However, it remains unclear whether these anatomical and demographic differences persist at the seedling stage, when most liana species are self-standing and, conseq...
Triphora surinamensis occurs from the Caribbean to Brazil, but its presence in Colombia was uncertain. Here, we confirm the new record for the country's orchid flora, based on specimens, occurrences, and photograph records from Antioquia, Santander, and Valle del Cauca Departments. We also present habitat details, and the national conservation asse...
Chrysochlamys (Clusiaceae) is a strictly Neotropical genus that comprises between 35 and 55 species. The taxonomy of the genus is poorly-known in South American region, especially in Andean countries. During the taxonomic revision of Chrysochlamys and related genera in Colombia we observed two mainly gaps: the unclear nomenclatural history of Andea...
Until now, phylogenetic relationships for the genus Calliandra section Androcallis (Fabaceae) were unresolved. We reconstructed the phylogeny of the section, including previously sequenced species from Central and South America and unexamined species from Colombia. Here, we generated 80 novel DNA sequences of Calliandra species from Colombia for th...
Completar la Lista Roja de las Plantas de Colombia es una de las metas principales de la Estrategia Nacional para la Conservación de Plantas (ENCP) y es crucial para la planificación de la conservación de la flora del país. La serie del Libro Rojo de Plantas de Colombia realizó la primera contribución importante a la Lista Roja nacional, y desde el...
We tested the idea that functional trade‐offs that underlie species tolerance to drought drive shifts in community composition via their effects on demographic processes and subsequently on shifts in species' abundance. Using data from 298 tree species from tropical dry forests during the extreme ENSO‐2015, we scaled‐up the effects of trait trade‐o...
Patterns of species diversity have been associated with changes in climate across latitude and elevation. However, the ecological and evolutionary mechanisms underlying these relationships are still actively debated. Here, we present a complementary view of the well-known tropical niche conservatism (TNC) hypothesis, termed the multiple zones of or...
Phylogenetic relationships for the genus Calliandra section Androcallis (Fabaceae) were reconstructed, including previously sequenced species from Central and South America and unexamined species from Colombia, one of Calliandra main diversity centers. Here, we generated novel DNA sequences of Calliandra species from Colombia for the nuclear Intern...
Phylogenetic relationships for the genus Calliandra section Androcallis (Fabaceae) were reconstructed, including previously sequenced species from Central and South America and unexamined species from Colombia, one of Calliandra main diversity centers. Here, we generated novel DNA sequences of Calliandra species from Colombia for the nuclear Intern...
La vegetación herbácea ruderal en el sector urbano del Distrito de Medellín está constituida por las especies de plantas que crecen de forma espontánea. Estas plantas ocurren en una variedad de sitios, tales como andenes, entre grietas de concreto, separadores viales, alcantarillas, techos, muros, puentes e incluso, crecen sobre cables eléctricos....
Isoprene emissions are a key component in biosphere–atmosphere interactions, and the most significant global source is the Amazon rainforest. However, intra- and interannual variations in biological and environmental factors that regulate isoprene emission from Amazonia are not well understood and, thereby, are poorly represented in models. Here, w...
Isoprene is a chemical compound emitted naturally by soil, microorganisms, plants, and animals into the atmosphere. But plants are the largest emission source, and the amount of emission depends on plant species, weather conditions, and environmental conditions, including exposure to environmental stresses such as heat and drought. Isoprene is very...
Chrysochlamys membranacea Planch. & Triana is a species described as a pistillate specimen collected between Nariño and Cauca departments, in the locality of biogeographic Chocó, Colombia. In that publication the authors also provide a description of staminate flowers, however, there is no clarity about the collection related to it. During studies...
Forests that regrow naturally on abandoned fields are important for restoring biodiversity and ecosystem services, but can they also preserve the distinct regional tree floras? Using the floristic composition of 1215 early successional forests (≤20 years) in 75 human-modified landscapes across the Neotropic realm, we identified 14 distinct floristi...
Dendropanax arboreus have been considered a high phenotypic variable species and the name applied to many different entities from Mexico and the West Indies to Brazil and Bolivia, from sea level up to 3200 m. A circumscription of D. arboreus based on the West Indies populations is proposed. This is the first step in order to delucidate how many tax...
A new species of Chamaecrista sect. Apoucouita (Caesalpinioideae, Fabaceae) from the Middle Magdalena Valley and Bajo Cauca region in the department of Antioquia, Colombia is described and illustrated. Chamaecrista almanegra differs from morphologically similar species mainly by its leaves with 4 to 6 pairs of leaflets (up to 8 pairs only in juveni...
Aims
Tropical dry forests are one of the most threatened ecosystems on Earth, and understanding the effects of climate on its species distributions is critical to mitigate global change impacts. Here, we assessed the impact of precipitation and dispersal limitation by natural and anthropogenic causes on phylogenetic and taxonomic beta diversity of...
Resilient secondary tropical forests?
Although deforestation is rampant across the tropics, forest has a strong capacity to regrow on abandoned lands. These “secondary” forests may increasingly play important roles in biodiversity conservation, climate change mitigation, and landscape restoration. Poorter et al . analyzed the patterns of recovery i...
El Libro de resúmenes del 1er Simposio Colombiano de Epífitas: diversidad, ecología y conservación, es una publicación que reúne las presentaciones orales y exposiciones de poster derivadas de la investigación y/o experiencias académicas y científicas que se presentaron en el Simposio del mismo nombre entre el 9, 10 y 11 de junio de 2021 en formato...
Sciodaphyllum montanum Idárraga, Jiménez-Mont. & Lowry and S. undulatum Jiménez-Mont., Idárraga & Lowry (Araliaceae) from the northern region of the Central and Western Cordilleras of the Andes in Colombia are described and illustrated. Sciodaphyllum montanum differs from other members of the genus mainly by a bulging disc up to 1.1 mm in height an...
Tropical forests are the most diverse and productive ecosystems on Earth. While better understanding of these forests is critical for our collective future, until quite recently efforts to measure and monitor them have been largely disconnected. Networking is essential to discover the answers to questions that transcend borders and the horizons of...
A new species of Sciodaphyllum (Araliaceae), S. pygmaeum, is described and illustrated from the basin of the Anchicayá River in the Chocó Biogeographical region of Colombia. This new species differs from other members of the genus by being a small monocaulous shrub, with hollow branches, tubular stipular ligules, and fewer secondary branches in the...
Zanthoxylum magnifructum is a recently described species based on only a fruiting specimen collected in tropical dry forests in the department of Huila in Colombia. An emended description and illustration are presented, including flowers and seeds, which were previously unknown. Comments on its geographical distribution, conservation status, taxono...
El presente documento hace parte de los productos pactados en el convenio específico de cooperación No. 16-14-331-
247CE, firmado entre el Instituto de Investigación de Recursos Biológicos Alexander von Humboldt y la Universidad Icesi,
que tenía como objeto “Aunar esfuerzos técnicos, administrativos y financieros para consolidar y estructurar infor...
Extreme drought events have negative effects on forest diversity and functioning. At the species level, however, these effects are still unclear, as species vary in their response to drought through specific functional trait combinations. We used long‐term demographic records of 21,821 trees and extensive databases of traits to understand the respo...
Societal Impact Statement
Tropical dry forests (TDF) underpin the wellbeing of millions, mostly rural populations; yet have suffered from severe clearing in Colombia, triggering cascading effects such as desertification. By engaging scientists, society, and institutions in the establishment of platforms for monitoring biodiversity and ecosystem fun...
Meriania juan-canoi, a new species endemic to the northern Andes in Colombia is described and illustrated. This new species belongs to the Brachycera group and can be distinguished from the other species by its apically rounded calyptra, completely free ovary and dimorphic stamens. The description of this new species from a relatively well collecte...
Sciodaphyllum zarucchii M. M. Mora, Lowry, Idárraga, Jiménez-Mont. & G. M. Plunkett (Araliaceae) is described as a new species in honor of James L. Zarucchi (1952–2019). It occurs in humid premontane and montane forests on the western slope of the Cordillera Occidental in the department of Antioquia, Colombia, where it is known from only two locali...
Tropical dry forests ( TDF ) are known to be resource‐limited due to a marked seasonality in precipitation. However, TDF are also shaped by factors such as solar radiation, wind speed, soil fertility, and land‐cover transformation. Together, these factors may determine different gradients of environmental harshness that are likely to drive changes...
Phylogenetic studies have shown that Schefflera, the largest genus of Araliaceae, is highly polyphyletic, comprising five non-sister clades within the family, and that the generic name must be restricted to a small group of Pacific Island species. In an effort to establish monophyletic genera for the other elements still remaining in Schefflera, ph...
La especie nueva, nombrada Sciodaphyllum sonsonense, se encuentra en los bosques altoandinos del norte de la Cordillera Central en Antioquia, Colombia. Este taxón comparte algunas características morfológicas con S. huilense y S. pubens, pero difiere entre otros caracteres, en poseer una lígula blanquecina y bífida de 1/3 a 2/3 de su longitud total...
Ecology, geography, morphology, and a combined phylogenetic analysis of DNA sequence variation support the recognition of the new species Luetzelburgia jacana (Leguminosae, Papilionoideae, vataireoid clade). This species is found in the inter-Andean Rio Cauca Valley in Colombia. Phylogenetic analyses of nine plastid and nuclear DNA sequences from 4...
Dos nuevas especies de Miconia (Melastomataceae) del piedemonte oriental de la cordillera Central de Antioquia, Colombia Resumen Se describen dos especies de Melastomataceae de frutos carnosos procedentes del departamento de Antioquia, Colombia: Miconia mailynii y Miconia hernandogarciae. Miconia mailynii se caracteriza por la presencia de mirmecóf...
Clusia hirsuta Hammel (Clusiaceae), a new species from the Pacific wet forest in Colombia and Ecuador, is described. Trichomes are reported here for the first time in the genus and described using micro-morphological techniques. Morphological and molecular data are used to establish the phylogenetic position of this newly described taxon within the...
Tropical dry forests (TDF) have been defined as a single biome occurring mostly in the lowlands where there is a marked period of drought during the year. In the Neotropics, dry forests occur across contrasting biogeographical regions that contain high beta diversity and endemism, but also strong anthropogenic pressures that threatened their biodiv...
Three new species of Schefflera (Araliaceae) from the “Calyptrate” clade of the Andean region in Colombia are described and illustrated. Schefflera bifurcata is similar to S. cicatricata, but it differs by presenting a smaller number of flowers per umbel and fewer carpels. Schefflers brevirama differs from S. elachistocephala by having an arboreal...
Se estudió la composición de plantas vasculares de un fragmento de bosque seco tropical, localizado en San Sebastián (Magdalena, Colombia). Se utilizó una muestra de 40 unidades de 100 m2 cada una para un área total de 0.4 ha. Se muestrearon todos los individuos presentes que tuvieran un DAP 3 2.5 cm. Los resultados generales dan un total de 155 es...
Los bosques tropicales almacenan grandes cantidades de carbono en su biomasa, y por ello juegan un papel determinante en el ciclo global de este elemento. Las variables biofísicas determinan la capacidad de almacenamiento de los bosques como reservorios de carbono. No obstante en los últimos años, la deforestación tropical ha hecho que estos ecosis...
El monitoreo permanente en ecosistemas con prioridad de conservación, como
el bosque seco, es fundamental
para comprender las dinámicas ecológicas y proponer medidas de manejo para su gestión integral.
Identifying the determinants of tree species composition among contrasting altitudinal tropical forest types will improve our understanding of the main factors and processes controlling tree species' distributions and patterns of diversity. The study area is located in the northwest region of Colombia. We used Redundancy Analysis (RDA) and a semi-l...
Seasonally dry tropical forests are distributed across Latin America and the Caribbean and are highly threatened, with less than 10% of their original extent remaining in many countries. Using 835 inventories covering 4660 species of woody plants, we show marked floristic turnover among inventories and regions, which may be higher than in other neo...
Seasonally dry tropical forests are distributed across Latin America and the Caribbean and are highly threatened, with less than 10% of their original extent remaining in many countries. Using 835 inventories covering 4660 species of woody plants, we show marked floristic turnover among inventories and regions, whichmay be higher than in other neot...
El Bosque Seco Tropical se encuentra
en un estado crítico de fragmentación y degradación en Colombia. La mayoría de sus áreas están expuestas a presiones antropogénicas como La ganadería, la infraestructura humana y la agricultura. ver: http://reporte.humboldt.org.co/biodiversidad/2015/cap2/202.html
En esta guía ilustrada de la flora presente en áreas de influencia de la Central Térmica Termocentro en el Magdalena Medio (Colombia) se documentan 202 especies de plantas vasculares, con una breve descripción botánica, comentarios sobre su distribución geográfica y altitudinal, preferencias del hábitat e información general sobre sus usos en esta...
Identifying the determinants of tree species composition among contrasting altitudinal tropical forest types will improve our understanding of the main factors and processes controlling tree species’ distributions and patterns of diversity. The study area is located in the northwest region of Colombia. We used Redundancy Analysis (RDA) and a semi-l...
Dendropanax pachypedunculatus Idárraga & Lowry (Araliaceae) is described from lowland forest in the Donoso region of Colón province along the Caribbean slope of Panama. It most closely resembles D. arboreus (L.) Decne. & Planch., from which it can be distinguished by several characters including its larger fruits, thicker primary inflorescence axes...
Historical and potential extinction of shrub and tree species through deforestation in the department of Antioquia, Colombia Extinción histórica y potencial de especies de arbustos y árboles debido a la deforestación en el departamento de Antioquia, Colombia Abstract. We assessed the expected historical and current species richness of shrubs and tr...
We assessed the expected historical and current species richness of shrubs and trees in the Department of Antioquia, northwest region of Colombia. We used the Fisher ́s alpha value associated with the pooled dataset of identified species in 16 1-ha plots that were used to extrapolate the scaled species richness of the Antioquia Province under three...
Chapter 2 represents the first study to compile plant species data from dry tropical forests (DTF) from the six different regions where this ecosystem occurs in Colombia. However, it is clear that even this basic information is poor in some regions of dry forests in the country. Regardless of these limitations, analyses on the floristic composition...
Carbon-centric conservation strategies such as the United Nation's program to Reduce CO2 Emissions from Deforestation and Degradation (REDD+), are expected to simultaneously reduce net global CO2 emissions and mitigate species extinctions in regions with high endemism and diversity, such as the Tropical Andes Biodiversity Hotspot. Using data from t...
Flora de los bosque montanos de Medellín, Colombia
Tropical forests store large amounts of carbon (C2) in their biomass, thus playing a key role in the global cycle of this element. The carbon storage capability of tropical forests is largely determined by biophysical factors. However, in recent years tropical deforestation has converted this ecosystem into a source of carbon emissions into the atm...
El Catálogo es el resultado de un acuerdo de colaboración entre el Missouri Botanical Garden en Saint Louis, MO, USA y la Universidad de Antioquia en Medellín, Colombia, y de la contribución de más de 70 botánicos a nivel mundial. El principal objetivo del proyecto fue sintetizar información referente a las plantas vasculares del Departamento. La v...
Colombia is home to the majority of known South American species of Zamia (Zamiaceae). Although Zamia is now the only recognised genus of extant Cycadales in South America, it shows some complex ecological adaptations that have resulted in several evolutionarily divergent sections within the genus. The recent publication of Flora de Colombia listed...
resumen Como resultado de la revisión de las especies del género oreopanax (Araliaceae) en Costa Rica, Nicaragua y Panamá, se proponen una serie de novedades que incluyen la descripción de una nueva especie, O. paramicolus, la redefinición del concepto de otras (o. nica-raguensis), rectificación del rango de distribución geográfica para dos taxones...
We investigated patterns of bryophyte species richness and composition in two forest types of Colombian Amazonia, non-flooded tierra firme forest and floodplain forest of the Caquetá River. A total of 109 bryophyte species were recorded from 14 0.2 ha plots. Bryophyte life forms and habitats were analyzed, including the canopy and epiphylls. Bryoph...
Colombia es uno de los países con mayor diversidad de Cycadas en el Neotrópico, pero la mayoría de las especies en nuestro país se encuentran en riesgo de extinción, principalmente por la destrucción de su hábitat. En este artículo se compila la información existente sobre las especies Zamiaceae del departamento de Antioquia y se hace un diagnóstic...
Se describe e ilustra un nuevo género de la familia Trigoniaceae, que crece en el bosque húmedo tropical, en la cuenca media del río Magdalena (Colombia). La única especie hasta ahora conocida,presenta hojas alternas, inflorescencias racemosas simples y frutos samaroides. Su posición taxonómica dentro de la familia Trigoniaceae y la implicación fit...
Se describe e ilustra un nuevo género de la familia Trigoniaceae, Malpighiales, de los bosques húmedos tropicales de la cuenca media del rio Magdalena, Colombia. La única especie hasta ahora conocida presenta hojas alternas, inflorescencias de tipo racemoso y frutos samaroides trialados. Su ubicación taxonómica en relación con las familias Trigonia...
