Luis F PachecoHigher University of San Andrés | UMSA · Institute of Ecology
Luis F Pacheco
Dr.
About
167
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Introduction
I am interested in ecology and natural history in general. I work to understand how nature works. I am also interested in developing new ways of seeing development, from the basic principle of sustainability first.
Additional affiliations
February 2010 - March 2015
Education
August 1993 - December 1997
January 1991 - August 1993
March 1983 - November 1990
Publications
Publications (167)
p>Wildlife is often blamed for causing damage to human activities, including agricultural practices and the result may be a conflict between human interests and species conservation. A formal assessment of the magnitude of damage is necessary to adequately conduct management practices and an assessment of the efficiency of different management prac...
Predation on livestock by wild carnivores represent large economic losses worldwide. Livestock predation by puma (Puma concolor) and culpeo fox (Lycalopex culpaeus) represents not only a problem for the Sajama National Park (SNP) management in Bolivian highlands, but also for the conservation efforts of these predators. At SNP we quantified: 1) The...
KEY POLICY INSIGHTS
● Socio-economic issues must be addressed simultaneously to agree in theoretical issues for the management of extant and new protected areas.
● An increase in the area covered by protected areas does not guarantee biodiversity conservation.
● The global development model, based on economic growth, is the major impediment to biod...
We studied Tachymenis peruviana`s thermoregulatory strategy, and microhabitat use and selection in an open enclosure at 3400 m elevation during the wet season. We expected that thermal conditions at a high elevation locality would result in differences in the thermoregulatory efficiency within microhabitats through their use and selection along the...
The allelopathic effect of Pteridium ferns (hereafter bracken) is considered an important factor hindering forest recovery. We examined the effects of bracken allelopathy on seed germination, seedling emergence, survival, and relative growth rate (RGR) of two native tree species, Morella pubescens and Vismia plicatifolia, in a tropical montane fore...
Coffee-related agricultural intensification affects bird species abundance, richness, and composition through habitat loss and degradation. Production of specialty coffee is expected to be more sustainable and environmentally friendly than conventional coffee. Nevertheless, not all specialty coffee is grown sustainably. To evaluate environmental su...
![Figure 2. A map from Suriname from Stedman [27] after page 30*. It...](profile/Jesus-Rivas-3/publication/382340282/figure/fig1/AS:11431281260921051@1721307263710/A-map-from-Suriname-from-Stedman-27-after-page-30-It-shows-where-Boa-aboma-was-found_Q320.jpg)
While elucidating the evolutionary trajectory of green anacondas, we previously documented the existence of two distinct species, Eunectes akayima sp. nov. and Eunectes murinus (Linnaeus, 1758), that separated approximately 10 million years ago. Our research integrates a novel molecular clock approach, focuses on tectonic plate movements with fossi...
Con seguridad, más de una vez le han preguntado algo así: Tú que eres biólogo(a), ¿cuánto vive un cocodrilo? O ¿cuál es el árbol que vive más tiempo? O ¿qué tipo de plantas debería poner en este espacio? Las respuestas a ese tipo de preguntas suelen ser variadas, dependiendo de cuánto sepamos sobre determinado tema. En algunas ocasiones, con seguri...
Zoophilous flowering plants have features to attract their pollinators, which may also be used by exploiters like nectar robbers. Nectar robbers access nectar by probing flower corollas (primary robbing) or use existing holes (secondary robbing). Nectar robbing can negatively impact a plant's fitness directly by damaging the reproductive structures...
Anacondas, genus Eunectes, are a group of aquatic snakes with a wide distribution in South America. The taxonomic status of several species has been uncertain and/or controversial. Using genetic data from four recognized anaconda species across nine countries, this study investigates the phylogenetic relationships within the genus Eunectes. A key f...
Background:
The terrestrial bromeliad Puya ctenorhyncha is a near-threatened endemic species that grows between 2,500-4,050 m asl.
Hypotheses:
Hummingbirds are the most important visitors of this plant given its morphological and floral traits.
Study site:
The study was carried out along the “Death Road”, located in the Yungas montane cloud fores...
Specialty coffee (SC) production enables farmers to earn premium prices for high-quality coffee. In Bolivia, some coffee-based agroforestry systems (CAFS) produce SC. However, while many Bolivian families’ livelihoods depend on coffee, studies on SC-producing CAFS remain scarce. Yet, research on tree diversity, CAFS management and the factors affec...
Muy poco se ha indagado sobre la posibilidad de contar con el apoyo público
para la gestión y el mantenimiento de las áreas protegidas (AP). Los gobiernos
de turno han priorizado las actividades que generen movimiento económico,
desestimando las acciones de establecimiento y mantenimiento de AP en el
territorio boliviano. Adicionalmente, las posici...
Specialty coffee (SC) production enables farmers to earn premium prices for high-quality coffee. In Bolivia, some coffee-based agroforestry systems (CAFS) produce SC. However, while many Bolivian families’ livelihoods depend on coffee, studies on SC-producing CAFS remain scarce. Yet, research on tree diversity, CAFS management and the factors affec...
Los helechos arbóreos son importantes dentro de la estructura de los bosques, siendo comunes en bosques húmedos bien conservados; sin embargo, se conoce muy poco sobre su ecología. La conservación de Cyathea y Dicksonia está amenazada por la comercialización de sus partes. La densidad de Dicksonia karsteniana estuvo positivamente relacionada con la...
El conocimiento del ámbito de hogar (AH) y del uso del hábitat de las especies es importante para comprender sus requisitos ecológicos. Evaluamos el AH y el uso de microhábitat de Liolaemus forsteri, una especie endémica de los Andes de Bolivia, mediante muestreo focal y registro de movimiento desde sus refugios y comparamos los resultados con espe...
First report of a juvenile Bothtops atrox found on top of aquatic vegetation.
At 2240 h on 2 March 2021, in the Tacana Indigenous Territory
(13.90811°S, 67.54119°W; WGS 84), La Paz Department, Bolivia,
we found a juvenile B. atrox sitting on top of a leaf of Eichornia
Las pandemias son un fenómeno recurrente en la historia de la humanidad,
regularmente cada siglo surge un par de dichos eventos (Morens et al. 2021). A pesar de
los avances en comprender y manejar brotes potencialmente pandémicos, la aparición de
nuevos patógenos causantes de enfermedades de preocupación tiende a ser más frecuente
(Priyadarsini et...
Alto Beni, a valley of the Andean foothills of Bolivia, is inhabited by farmers who migrated from highlands less than 70 years ago. There is a need for land evaluation and land use planning in this region. The land evaluation must consider the farmer’s knowledge of soil and other components. We aimed to assess how the local knowledge about soils ag...
The predation of livestock by carnivores is a common problem in the highland region of Bolivia, Chile and Peru, which enables and requires a trinational approach for its mitigation, particularly for pumas and culpeo foxes. In this chapter we review the research
carried out to understand this conflict in the region, we discuss the existing tools and...
Gracias al convenio que fue suscrito entre el Instituto de Ecología de la Universidad Mayor de San Andrés (UMSA) y el Instituto de Investigaciones de Agricultura Orgánica (FIBL-Suiza) se promovió el funcionamiento el proyecto “Ensayo de comparación de sistemas de producción a largo plazo (Sys Com-Bolivia)” desde 2008. El Programa Sys Com se desarro...
Las tortugas continentales son uno de los grupos de reptiles menos estudiados en Bolivia. La última revisión y evaluación de este grupo fue realizada el año 2009 para el Libro Rojo de la Fauna Silvestre de Vertebrados de Bolivia. En el presente trabajo evaluamos tanto el estado de conocimiento como el nivel de las amenazas actuales, y determinamos...
Las tortugas continentales son uno de los grupos de reptiles menos estudiados en Bolivia. La última revisión y evaluación de este grupo fue realizada el año 2009 para el Libro Rojo de la Fauna Silvestre de Vertebrados de Bolivia. En el presente trabajo evaluamos tanto el estado de conocimiento como el nivel de las amenazas actuales, y determinamos...
Birds are widely used as bioindicators in monitoring programs in wetlands. We compare concentrations of seven trace metals and metalloids (TMM) As, Cd, Cu, Fe, Hg, Pb, Znin both feathers and blood in two flamingo species in two high-altitude wetlands in Bolivia, with different levels of anthropogenic point source pollution. Lake Uru Uru (LUU) recei...
Resumen La dispersión es el transporte de las semillas desde el individuo parental hacia otro lugar, donde idealmente puedan establecerse. Existen varias formas de clasificar los síndromes de dispersión y se basan en características morfológicas que están adaptadas al vector de transporte (biótico o abiótico). Este estudio tiene por objetivo evalua...
age classes in an effort to establish a benchmark for long-term monitoring. Metal concentrations in water did not differ between sites, whereas Zn and Pb concentrations of TMM in sediments were higher at LUU, and Hg higher at LCo. TMM concentrations were highly specific for all separate elements, but results point to differences between Andean flam...
Amphibians are one of the most diverse and successful groups on the planet, but they did not manage to become completely independent of water bodies and are subject to a constant loss of water through evaporation, which depends on factors determined by the habitat occupy. Gastrotheca marsupiata and Pleurodema cinereum are anuran amphibians that sha...
On 2 January 2014 we encountered a dead and dried-out juvenile T. peruviana (SVL =
144 mm, Tail Length = 44 mm) that had fed on a male Liolaemus aparicioi (SVL = 44 mm; swallowed headfirst), an endemic lizard species of La Paz valley, Bolivia
El primer estudio sobre el relevamiento general de los
reptiles del valle de La Paz, fue publicado en 1991 por
Baudoin y Pacheco, donde se reportó tres especies de
lagartijas (Liolaemus multiformis, Liolaemus alticolor
alticolor y Liolaemus alticolor walkeri), y dos especies
de culebras (Leptotyphlops albifrons y Tachymenis
peruviana). Para el pres...
El primer relevamiento general de los anfibios del
valle de La Paz, fue publicado en 1991 por Ergueta,
quien reportó seis especies de anfibios (Bufo
spinulosus, Hyla pulchella, Gastrotheca marsupiata,
Telmatobius marmoratus, Pleurodema cinerea y
Pleurodema marmorata). Para el presente manuscrito
se reevaluaron las áreas muestreadas por Ergueta
(199...
En la naturaleza, las especies interactúan entre sí, ya sea
para conseguir su alimento, para poder reproducirse
o para escapar de sus depredadores. De todas las
interacciones entre diferentes especies, aquellas
que se establecen entre plantas y animales son muy
importantes para asegurar la permanencia, tanto
de las plantas como de los animales que...
Amphibians are one of the most diverse and successful groups on the planet, but they did not manage to become completely independent of water bodies and are subject to a constant loss of water through evaporation, which depends on factors determined by the habitat occupy. Gastrotheca marsupiata and Pleurodema cinereum are anuran amphibians that sha...
Tropical forests conversion to agriculture has increased in recent years, though often followed by land abandonment and subsequent conversion to secondary forest. In this study, we evaluated the effect of disturbance on Nymphalid butterfly assemblages in an area of mountain foothill forests in Bolivia by comparing the butterfly diversity and specie...
Lizard species have diverse behavioral and physiological responses to thermo-environmental conditions, which allow them to inhabit a broad range of latitudes and elevations. Because the availability of suitable thermal resources is limited and more variable at high-elevation environments than at lower elevations, we expect high-elevation lizards to...
Abstract The fires that occurred in 2019 burned more than 2 million hectares of Chiquitano forest in Bolivia. Using theoretical tools, based on allometry, we estimated that the number of mammals killed directly by fire was approximately 5.914.527 individuals. The major part occurred in protected areas with numbers per species varying between four j...
Resumen Los incendios ocurridos en 2019 quemaron más de 2 millones de hectáreas de bosque chiquitano en Bolivia. Utilizando herramientas teóricas basadas en alometría, estimamos que el número de mamíferos muertos directamente por fuego fue de aproximadamente 5.914.527 individuos. La mayoría ocurrió en áreas protegidas y con números por especie que...
The fires that occurred in 2019 burned more than 2 million hectares of Chiquitano forest in Bolivia. Using theoretical tools, based on allometry, we estimated that the number of mammals killed directly by fire was approximately 5.914.527 individuals. The major part occurred in protected areas with numbers per species varying between four jaguars up...
Resumen Los incendios ocurridos en 2019 quemaron más de 2 millones de hectáreas de bosque chiquitano en Bolivia. Utilizando herramientas teóricas, basadas en alometría, estimamos que el número de mamíferos muertos directamente por fuego fue de aproximadamente 5.914.527 individuos, con números por especie que varían entre 4 individuos de jaguar, has...
La salida del ser humano moderno de África ocurrió hace ≥72.000 años y el último
continente al que llegó fue América del Sur, hace unos 16.400 años. La evidencia sugiere un fuerte impacto de nuestros ancestros sobre la fauna sudamericana, posiblemente
facilitado por los cambios climáticos ocurridos coincidentemente. Estos
impactos se vieron también...
Resumen La dispersión es el transporte de las semillas desde el individuo parental hacia otro lugar, donde idealmente puedan establecerse. Existen varias formas de clasificar los síndromes de dispersión y se basan en características morfológicas que están adaptadas al vector de transporte (biótico o abiótico). Este estudio tiene por objetivo evalua...
The common opossum, Didelphis marsupialis thrives near human settlements. Understanding its ecology could help planning management decisions about this species, especially in anthropogenic landscapes. Yet, there are no density estimations for this species throughout its distribution range in Bolivia. We estimated the density of D. marsupialis in a...
The San Buenaventura sugar mill was implemented in the north of La Paz, without a phase of in-depth evaluation of costs and benefits, of the change of land use from tropical forest to sugar cane. The objective of this essay is to evaluate the economic costs and benefits of other forms of land use in that region, in addition to ecological considerat...
Predation on livestock by wild carnivores represent large economic losses worldwide. Livestock predation by puma (Puma concolor) and culpeo fox (Lycalopex culpaeus) represents not only a problem for the Sajama National Park (SNP) management in Bolivian highlands, but also for the conservation efforts of these predators. At SNP we quantified: 1) The...
Despite the existence of several regional studies on the diet of the Andean bear (Tremarctos ornatus), there is a lack of information about the effects of human disturbances on this species’ foraging
ecology. Our main goal was to compare Andean bear diet composition between a disturbed area (DA) close to a paved road versus an undisturbed area (UA)...
We used radio-telemetry to record how Caiman yacare (Cy) and Melanosuchus niger (Mn) responded to the intrusion of the Maniqui river into Cedral Lagoon in the Bolivian Amazon. Nine M. niger and 3 C. yacare were followed between December 2015 and May 2016. Both species showed a gradual reduction in mean monthly range from December (19.96 ha Mn and 1...
Resumen El ingenio azucarero de San Buenaventura fue implementado en el norte de La Paz, sin una fase de evaluación profunda de costos y beneficios del cambio de uso del suelo de bosque tropical a caña de azúcar. El objetivo de este ensayo es evaluar los costos y beneficios económicos de otras formas de uso del suelo en esa región; además de consid...
Resumen La salida del ser humano moderno de África ocurrió hace ≥72.000 años y el último continente al que llegó fue América del Sur, hace unos 16.400 años. La evidencia sugiere un fuerte impacto de nuestros ancestros sobre la fauna sudamericana, posiblemente facilitado por los cambios climáticos ocurridos coincidentemente. Estos impactos se vieron...
Studies on the distribution of species and community structure are essential to understand the effects that environmental change may have on them, regardless of whether it was climatic or human-induced. These studies are particularly important in the case of rodent communities, as they are highly diverse and can often serve as biodiversity indicato...
Resumen El estado de conservación de las poblaciones de anfibios en Bolivia aún es poco conocido, y los estudios sobre su distribución, densidad, y amenazas son escasos para cada una de las especies. En el presente trabajo realizamos una evaluación del estado de conservación de la especie endémica boliviana Yunganastes bisignatus, incrementamos el...
Studies on the distribution of species and community structure are essential to understand the effects that environmental change may have on them, regardless of whether it was climatic or human-induced. These studies are particularly important in the case of rodent communities, as they are highly diverse and can often serve as biodiversity indicato...
Between the years 2000 and 2005, teachers from 39 schools of the municipality of Coroico (Bolivia)
applied a research method called the Inquiry Cycle (IC) in their classrooms. In order to know the
effect, in students and teachers, of the application of IC in the skills to design an investigation in the cation of IC in the skills to design an invest...
Entre los años 2000 a 2005, maestros de 39 escuelas del municipio de Coroico (Bolivia) aplicaron con sus estudiantes un método de investigación llamado Ciclo de Indagación (CI). Con el objetivo de conocer el efecto, en estudiantes y maestros, de la aplicación del CI en las habilidades para diseñar una investigación, en los cambios en el conocimient...
The rich diversity of flora and fauna species in the La Paz Valley has been recorded in this new edition. However, it is difficult to mention in countless lines the innumerable contributions and novelties that have been included in this book that is addressed in particular to the inhabitants of this huge inter-Andean valley, and which aims to be a...
Evaluación del empleo del Ciclo de Indagación en escuelas rurales de Bolivia Assessment of the use of the Cycle of Inquiry in rural schools of Bolivia Avaliação do uso do Ciclo de Inquérito em escolas rurais da Bolívia En prensa: revista Praxis, Educación y Pedagogía (1)Correspondencia: aleiroldan@yahoo.com RESUMEN Entre los años 2000 a 2005, maest...
ContextUnderstanding the factors that determine the distribution and abundance of species is an important aim of ecology and prerequisite for conservation. The Andean cat (Leopardus jacobita) and the pampas cat (L. colocolo) are two of the least studied felids. Both are threatened, of similar size and live sympatrically in the Andes of Argentina, B...
Esta publicación es el Resumen Ejecutivo del análisis realizado por investigadores de la UMSA sobre el Estudio de Identificacion del proyecto de generación de energía de las represas de Chepete y Bala, en la Amazonía de Bolivia. El trabajo se realizó a solicitud de la Mancomunidad indígena de los rios Beni, Tuichi y Quiquibey.
Termorregulación en Tachymenis peruviana
El uso de hábitat en lagartijas está relacionada a la cobertura del suelo, la cual afecta a la adopción de diferentes estrategias de termorregulación, tipo de forrajeo y la utilización del espacio. A su vez, la edad, sexo e interacciones inter e intra-específicas modifican esos patrones. Liolaemus forsteri es una lagartija endémica de Bolivia, que...
Demografía especie de lagartija en el valle de La Paz
Estudio de ámbito de hogar de Liolaemus forsteri, una especie de lagartija endémica de Bolivia perteneciente a ecosistemas de alta montaña, semiáridos y fríos.