Browsing by Autor "Dennis Lizarro"

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ALGAL STUDIES IN BOLIVIA: A COMPILATION AND PRELIMINARY ANALYSIS OF EXISTING PHYCOLOGICAL LITERATURE
(2008) Eduardo A. Morales; Erika Fernández; Carla E. Fernández; Dennis Lizarro; Pamela Alcoreza
A compilation of phycological literature published on Bolivian algae is presented together with an analysis of strengths, weaknesses, and needs in this field of investigation. An analysis of the nationality of authors, type, content, and geographic focus of the references shows that literature is largely produced by foreign scientist, concentrated on just a few areas of the country, or are biased toward particular algal groups, leaving ample room for more exploration. The Altiplano (high mountain plateau) and Amazon concentrate most of the publications, the phytoplankton and algae found in sediment cores, being the communities that have received more attention from scientists. Taxonomic references focus more on phytoplankton and tychoplankton communities and are largely restricted to the mere presentation of taxa lists, but using old and geographically unsuitable floras as the source for taxa names. The present work does not incorporate an account of the number and identity of taxa at the genus, species or infraspecific levels. That work will be presented later after appropriate taxonomic review. The purpose of this compilation is to provide an overview for what is known about Bolivian algae up to this point and to provide the bases for further investigations in this field, including a catalog of Bolivian algae.
Atractus albuquerquei Cunha &amp; Nascimento, 1983 (Serpentes, Dipsadidae): range extension and new country record for Bolivia
(Pensoft Publishers, 2020) Randy L. Powell; Cord B. Eversole; Dennis Lizarro; Ashton V. Crocker; Elizabeth A. Surovic; Gonzalo Calderón Vaca
We present a new country record and range extension for Atractus albuquerqueri Cunha and Nascimento, 1983 (Serpentes, Dipsadidae) from Bolivia. There is a paucity of published information on locality data and information on this species and this account contributes to the knowledge of its distributional status.
Bothrops taeniatus Wagler, 1824 (Serpentes, Viperidae): additional country record and list of voucher specimens for Bolivia
(Pensoft Publishers, 2020) Randy L. Powell; Cord B. Eversole; Dennis Lizarro; Ashton V. Crocker; Gonzalo Calderón Vaca; Elizabeth A. Surovic
We present a new country record and range extension for the snake species Bothrops taeniatus Wagler, 1824 (Serpentes, Viperidae). The specimen represents the northeastmost record in Bolivia and fills the distributional gap between the known Brazilian and Bolivian populations. There is a paucity of published information on locality data and information on this species and this account contributes to the knowledge of its distributional status.
Characterization of caves as bat roosts in the brazilian-paranense biogeographic region of Bolivia
(Asociacion Mexicana de Mastozoología A.C., 2020) Dennis Lizarro; Luís F. Aguirre; José Carlos Pérez-Zubieta; Aideé Vargas; M. Isabel Galarza
Bats play vital roles in nature as pollinators, seed dispersers, and natural controllers of insect pests. They serve as indicators of habitat disturbance and provide an insight into the health status of an ecosystem. This enormous importance contrasts with the lack of information on the current state of their roosts in Bolivia, particularly as regards caves and caverns. A search for caves and caverns was carried out in the eastern department of Santa Cruz, Bolivia, corresponding to the Brazilian-Paranense biogeographic region. Subsequently, an environmental-structural characterization of the caves was conducted to obtain biological information by capturing and identifying bats in eastern Bolivia. Interspecific associations in caves and the relationship between roost characteristics and bat diversity were explored and described based on the variables evaluated. A total of 19 caves were evaluated. A correlation between environmental and structural parameters was investigated, showing a relationship between cave length and humidity. Seven species of cave bats were identified, and two species of threatened Bolivian bats (Lonchorhina aurita and Natalus macrourus) were found in four caves. The caves evaluated are new records of this vital habitat for bats in the country. The presence or absence of bat species was found to depend on the structural characteristics of the cave (length, complexity), but not on temperature, although humidity may play a role in the presence of species. Among the species found, those highly specialized in the selection and use of roosts at caves could be prone to local extinctions. It is suggested that further investigations should be carried out on the ecology of these cave-dwelling bat species to identify the roosting patterns of bats and their distribution range, to elaborate conservation and management programs for caves and the animal communities sheltered.
Comunidad de peces de la laguna de inundación urbana Las Palquitas, Trinidad-Beni (Bolivia)
(2020) Dennis Lizarro; Marco Aurelio Pinto-Viveros; Federico Moreno-Aulo
Erythrolamprus dorsocorallinus (Esqueda, Natera, La Marca &amp; Ilija-Fistar, 2005) (Squamata: Dipsadidae): range extension, new country record, and comments on color pattern
(Pensoft Publishers, 2016) Cord B. Eversole; Randy L. Powell; Dennis Lizarro; Reinaldo Cholima Bravo
We present a new country record and significant range extension of Erythrolamprus dorsocorallinus from Bolivia. Locality data on this species is lacking and this account significantly contributes to the knowledge its distributional status throughout South America.
Herpetofauna of the Reserva de la Biósfera Estación Biológica del Beni and the Chimane Reserve Indigenous Territory, Bolivia
(Taylor & Francis, 2021) Cord B. Eversole; Randy L. Powell; Dennis Lizarro; Ashton V. Crocker; Gonzalo Calderón Vaca; Paola De la Quintana
Identifying patterns of herpetofaunal diversity is imperative to the conservation of these species and the ecosystems on which they rely. In this study, we determined species occurrence and composition of the herpetofauna at the Reserva de Biósfera Estación Biológica del Beni and the Chimane Reserve Indigenous Territory. Combined data resulted in documentation of 97 species belonging to 22 families and 50 genera. Reptiles were represented by 14 families and 47 species, while amphibians were represented by eight families and 50 species. This study provides a robust inventory and report of the herpetofauna at this site and delivers data that can be used in future studies. Our results indicate that this site harbors many species, which likely contributes to the collective maintenance of biodiversity in the Bolivian lowlands. Conservation initiatives should consider the collective uniqueness of vertebrate communities maintained by habitat mosaics in this area and strive to implement strategies that preserve and manage landscape-level biodiversity.
Introduction of a novel natural history collection: a model for global scientific collaboration and enhancement of biodiversity infrastructure with a focus on developing countries
(Springer Science+Business Media, 2019) Cord B. Eversole; Randy L. Powell; Dennis Lizarro; Federico Moreno; Gonzalo Calderón Vaca; James Aparicio; Ashton V. Crocker
Primer registro del paiche, "Arapaima gigas" (Schinz, 1822) (Osteoglossiformes: Arapaimidae) en el río Mamoré, Beni (Bolivia)
(2017) Dennis Lizarro; Luís Torres; Pedro Antonio Rodal; Federico Moreno-Aulo
Reptile Biodiversity and Vulnerability in Bolivia’s Beni Department: Informing Conservation Priorities in a Neglected Frontier
(Multidisciplinary Digital Publishing Institute, 2024) Cord B. Eversole; Randy L. Powell; Luis Rolando Rivas; Dennis Lizarro
The Department of Beni, in the country of Bolivia, is thought to host a significant level of biodiversity as a result of its tropical, moist, and diverse climate and landscape. However, the biodiversity of Beni is also considered poorly known and understudied due to its inaccessible landscapes, socio-economic challenges, and an overall lack of biodiversity infrastructure. This emphasizes the need for comprehensive species inventories and the development of effective conservation policies and strategies. We conducted an assessment of biodiversity, environmental vulnerability, and conservation status of reptiles documented in Beni. We identified 169 reptile species, spanning three orders and twenty-five families that have been officially documented in Beni. Utilizing the Environmental Vulnerability Score (EVS), we classified these species into high (17.8%), medium (68.1%), and low (14.2%) vulnerability categories, while IUCN categorization revealed 1.8% of reptile species in Beni are classified as vulnerable and 0.6% as near threatened. We found significant differences in ecological drivers of vulnerability among species within all categories (high, medium, low), with habitat specificity and human persecution being significantly higher for high and medium-vulnerability species. Our results demonstrate the intricate vulnerabilities of Beni’s reptiles, highlighting the need for comprehensive, species-specific conservation strategies and planning. Most importantly, our results offer a consolidated framework of information on reptile biodiversity and conservation for researchers, conservationists, and policymakers to use and build upon in the future that will facilitate the development of biodiversity infrastructure not only in the Department of Beni but throughout Bolivia and the Neotropics
Rhinobothryum lentiginosum (Scopoli, 1788) (Serpentes, Colubridae):&nbsp;additional country record and first list of voucher specimens for Bolivia
(Pensoft Publishers, 2021) Randy L. Powell; Cord B. Eversole; Dennis Lizarro; Ashton V. Crocker; Gonzalo Calderón Vaca; Elizabeth A. Surovic
We present an additional country record and a list of voucher specimens for Rhinobothryum lentiginosum (Scopoli, 1788) (Serpentes, Colubridae) from Bolivia. Very little published information on museum specimens and locality data from Bolivia exists for this species. This account contributes to the knowledge of its distributional status by summarizing all available data.
Tortoise and Freshwater Turtle (Testudines) Diversity and Species Richness in Bolivia
(2025) Enrique Domic-Rivadeneira; Dennis Lizarro; Gustavo Rey-Ortíz; Cinthya Alejandra Ureña-Aranda; Sandra Acebey; Pamela Jenny Carvajal-Bacarreza; Eliamne K. Gutiérrez; Rossy Montaño; Mauricio Ocampo; Germán Forero‐Medina
Xenopholis werdingorum, Jansen, Álvarez &amp; Köhler, 2009 (Squamata: Dipsadidae): range extension with comments on distribution
(Pensoft Publishers, 2016) Randy L. Powell; Cord B. Eversole; Ashton V. Crocker; Dennis Lizarro; Reinaldo Cholima Bravo
We present a significant range extension of Xenopholis werdingorum from Bolivia. There is a dearth of information on this recently described species, and this account significantly contributes to knowledge of its geographic range.