Browsing by Autor "Vincent Antoine Vos"

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Anurophagy by the Brown-banded Watersnake, Helicops angulatus (Serpentes: Colubridae): A review with new records
(University of Kansas, 2023) Juan Acosta-Ortiz; Vincent Antoine Vos
G iven their high population densities and protein intake, which are the result of their efficiency in converting ingested energy into biomass (Wells 2007), amphibians represent an important food resource for various groups of vertebrates and invertebrates.Among the groups of invertebrates that engage in anurophagy are flatworms, annelids, gastropods, arachnids, crustaceans, and insects (Wells 2007).Regarding vertebrates, various records indicate that all groups consume amphibians, including other amphibians (Wells 2007; Sierra-Rueda and Acosta-Ortiz 2020).Likewise, eggs, larval, juvenile, and adult amphibians often are prey of snakes, with amphibians being one of the main items in the diets of some species (e.g., Elaphe quadrivirgata, Thamnophis sirtalis, Thamnodynastes strigatus) (White and Kolb 1974;Bernarde et al. 2000;Wells 2007;Mori and Nagata 2016).The Brown-banded Watersnake, Helicops angulatus (Linnaeus 1758), is a semiaquatic snake that is widely distributed in South America with records in Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, Trinidad, and Venezuela (Nogueira et al. 2019).This snake usually inhabits areas with little human disturbance but also occupies disturbed habitats, where it can be seen in lotic and lentic bodies of water, such as ponds for fish production and temporary pools formed after rains (Martins and Oliveira 1998; Ford and Ford 2012;Acosta-Ortiz and Pardo-Moreno 2019).Due to its semi-aquatic habits, the diet of this snake is comprised mainly of animals associated with bodies of water, such as fish and anurans, although it also may include lizards and invertebrates (Martins and Oliveira 1998;Teixeira et al. 2017;Acosta-Ortiz et al. 2020).However, despite being a frequently encountered and widely distributed species, relatively few dietary records exist for H. angulatus.Herein we present a review of publications addressing the diet of H. angulatus in which anurans were reported as prey.We conducted searches using the keywords "Helicops angulatus diet" in Google Scholar and ResearchGate and reviewed the first 200 publications in each search engine and the literature cited in those publications.We prepared a list of the documented species, adjusting for taxonomic changes according to Frost (2021).In addition, we report three species of anurans for the first time as prey of H. angulatus in natural conditions, constituting the first documented records for Bolivia, French Guiana, and Suriname.We found descriptions of 22 species of anurans reported as prey items of H. angulatus (Table 1).The families with the highest number of prey species were Hylidae and Leptodactylidae, with 14 of the 22 species recorded.The genus with the greatest number of species was Rhinella, with six of the 22 species.Eighteen of the 23 available records were from Brazil.In one record from Colombia, Acosta-Galvis et al. ( 2022) reported Leptodeira annulata preying on Elachistocleis tinigua; however, according to the image presented with this record, the predator was H. angulatus.
Composición florística del bosque amazónico de tierra firme del sector Alto Madera, Bolivia
(2020) Guido Pardo-Molina; Luciana Carvalho Pereira; Ted R. Feldpausch; Vincent Antoine Vos; Rene Aramayo-Parada; Isai Arancibia-Rocabado; Rolly Mamio; S. Sánchez Enríquez; Miguel A. Mamani-Loza; Nahir Suarez-Tabo
Differing local‐scale responses of Bolivian Amazon forest ecotones to middle Holocene drought based upon multiproxy soil data
(Wiley, 2023) James Hill; Stuart Black; Daniel P. Soto; Ezequiel Chavez; Vincent Antoine Vos; Francis Mayle
ABSTRACT Uncertainty remains over local‐scale responses of ecotonal Amazonian forests to middle Holocene drying due to the scarcity, and coarse spatial resolution, of lacustrine pollen records. This paper examines the palaeoecological potential of soil phytoliths, stable carbon isotopes and charcoal for capturing local‐scale ecotonal responses of different types of Bolivian Amazonian forest to middle Holocene climate change. Soil pits 1 m deep were dug at ecotones between rainforest, dry forest, Chaco woodland and savannah, and sampled at 5–10 cm resolution. Both phytolith and stable carbon isotope records indicate stability of dry forest–savannah ecotones over the last ca. 6000 years, despite middle Holocene drought, revealing the dominance of edaphic factors over climate in controlling this type of ecotone. In contrast, δ 13 C data reveal that rainforest–savannah ecotones were more responsive to climate change, with rainforest likely replaced by drought‐tolerant dry forest or savannah vegetation during the mid‐Holocene, consistent with regional‐scale lacustrine pollen records. However, such shifts are not apparent in most of our phytolith records due to insufficient taxonomic resolution in differentiating rainforest from dry forest. Charcoal data show that ecotonal dry forests experienced greater fire activity than rainforests and that recent high fire activity at all forest sites is unprecedented since at least the middle Holocene.
Economically important species dominate aboveground carbon storage in forests of southwestern Amazonia
(Resilience Alliance, 2017) N. Galia Selaya; Pieter A. Zuidema; Christopher Baraloto; Vincent Antoine Vos; Roel Brienen; Nigel C. A. Pitman; Foster Brown; Amy E. Duchelle; Alejandro Araujo‐Murakami; Luis A. Oliveira Carillo
Selaya, N. G., P. A. Zuidema, C. Baraloto, V. A. Vos, R. J. W. Brienen, N. Pitman, F. Brown, A. E. Duchelle, A. Araujo-Murakami, L. A. Oliveira Carillo, G. H. Vasquez Colomo, S. Meo Chupinagua, H. Fuentes Nay, and S. Perz. 2017. Economically important species dominate aboveground carbon storage in forests of southwestern Amazonia. Ecology and Society 22(2):40. https://doi.org/10.5751/ES-09297-220240
Enact reforms to protect Bolivia’s forests from fire
(American Association for the Advancement of Science, 2025) Yifan He; Stasiek Czaplicki Cabezas; Oswaldo Maillard; Robert Müller; Alfredo Romero‐Muñoz; Laurenz Feliciano Romero Pimentel; Alcides Vadillo; Vincent Antoine Vos
Review of Erythrolamprus taeniogaster (Jan, 1863) (Serpentes, Colubridae) specimens from Bolivia and report of the first record from the Department of Pando
(Pensoft Publishers, 2025) Cord B. Eversole; Luis Rolando Rivas; Randy L. Powell; Vincent Antoine Vos; Ruben D. Layme
We present a new departmental record for Erythrolamprus taeniogaster (Jan, 1863) and discuss the species&rsquo; distribution in Bolivia and South America. There is a lack of consolidated and updated information on museum specimens and associated locality data for this species from Bolivia. This is largely because of changes in taxonomy that are not broadly reflected in contemporary literature and from limited sampling in this part of South America. This information improves knowledge of this species&rsquo; distributional status and summarizes known and available data from the Bolivian portion of its range.
Second record of a Marbled Treefrog, <i>Dendropsophus marmoratus</i> Laurenti 1768 (Anura: Hylidae), in the diet of the Banded Cat-eyed Snake, <i>Leptodeira annulata</i> Linnaeus 1758 (Squamata: Colubridae), in the Bolivian Amazon
(University of Kansas, 2024) Luis Rolando Rivas; Cord B. Eversole; Randy L. Powell; Vincent Antoine Vos
Tasas de cambios de coberturas de suelo y deforestación (1986-2011) en el municipio de Riberalta, Amazonía boliviana
(2015) Carmelo Peralta Rivero; Juan Carlos Torrico-Albino; Vincent Antoine Vos; María Guadalupe Galindo Mendoza; Carlos Contreras Servín
Two cases of ophiophagia by Clelia clelia, (Daudin 1803) (Squamata: Colubridae), from the Bolivian Amazon and a list of snake species recorded as prey
(University of Kansas, 2023) Luis Rolando Rivas; Vincent Antoine Vos; Cord B. Eversole; Randy L. Powell
WHY THE IMPLEMENTATION OF CDM AND REDD IS DIFFICULT IN THE BOLIVIAN AMAZON? A CASE OF STUDY IN A MUNICIPALITY OF NORTHERN BOLIVIAN AMAZON
(2015) Carmelo Peralta Rivero; María Guadalupe Galindo Mendoza; Vincent Antoine Vos; Carlos Contreras Servín
Currently, many hopes are put on projects related to ‘Clean Development Mechanism’ (CDM) as well as ‘Reduction of Emissions from Deforestation and Forest Degradation’ (REDD), with regard to possible benefits they might offer for the mitigation of climate change. This study seeks to contribute to the debates pertaining to the potentials and deficits of different alternatives. Landsat Images for the years 1986, 2000 and 2011 were used to analyze land cover changes in the municipality of Riberalta in the Bolivian Amazon, in order to identify areas with a potential for CDM and REDD projects. Furthermore, 138 interviews were carried out with peasant, indigenous and urban population in the municipality to evaluate their perception and knowledge regarding forest valuation, CDM and REDD projects. The results illustrate that a total of 4.3% of the municipal area are available for reforestation activities, but only 0.58% of this area can be considered under CDM projects. Moreover, it was identified that 74.03% of the municipal surface could be used for REDD projects. However, there is still a considerable lack of knowledge within the local population with regard to these projects as well as the issue of climate change. Despite this, local population highly values forest resources and in particular non-timber forest products (NTFP). It was concluded that there is considerable potential for CDM and REDD project in the municipality, but their application requires capacity-building and coordination of efforts with local population in order to guarantee the success of a possible implementation.