Effects of Human Settlements on Abundance of Podocnemis unifilis and P. expansa Turtles in Northeastern Bolivia

Conway-Gómez, Kristen

doi:10.2744/1071-8443(2007)6[199:eohsoa]2.0.co;2

Cited by 39 publications

(28 citation statements)

References 10 publications

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“…Threats: Overexploitation was regarded as the main threat (Groombridge, 1982;Johns, 1987;Conway-Gómez, 2007;Escalona, 2010;Mittermeier et al, 2010;Pineda-Catalan et al, 2012). Historical evidence indicates heavy overexploitation of the South American Podocnemis spp.…”

Section: General Distribution and Statusmentioning

confidence: 99%

A Short Review of the International Trade of Wild Tortoises and Freshwater Turtles Across the World and Throughout Two Decades

Luiselli

Starita

Carpaneto³

et al. 2016

Chelonian Conservation and Biology

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Interpretation and implementation of the ConventionCompliance and enforcement Review of Significant Trade in specimens of Appendix-II species [Resolution Conf. 12.8 (Rev. CoP13)] SPECIES SELECTED FOLLOWING COP151. This document has been prepared by the Secretariat. 3. At its 26th meeting (AC26, Geneva, 2012), the Committee reviewed the available information on these taxa in accordance with paragraph f) of Resolution Conf. 12.8 (Rev. CoP13). In instances where the Committee was satisfied that Article IV, paragraph 2 (a), 3 or 6 (a), was correctly implemented, it eliminated the species from the review with respect to the range State concerned, and these range States were notified accordingly by the Secretariat (see document AC26 Doc.12.3 and the summary record of AC26). At its 25th meeting (AC25,Geneva4. At AC26, the Committee also agreed that prior to the compilation of information called for in paragraph g), range States that had been kept in the process due to a lack of response but where no commercial trade had been recorded over the most recent 10 years, would be removed from the process in consultation with the Animals Committee. The taxa and range States that were thus retained in the review are shown in the table below. Taxa selected following CoP15 and retained in the review after AC26 Taxon selected Range StateMacaca fascicularis Cambodia; India, Indonesia, Lao People's Democratic Republic, Mauritius, Palau, Philippines, Viet Nam Psittacus erithacusBenin, Central African Republic, Ghana, Nigeria, Togo, Uganda Chamaeleo gracilisBenin, Cameroon, Ghana, Guinea, Togo, Uganda Chamaeleo senegalensisBenin, Ghana, Guinea, Mali, Senegal, Sierra Leone Trioceros melleri Mozambique Trioceros quadricornisCameroon, Nigeria Trachyphyllia geoffroyi Singapore, Solomon Islands 5. In accordance with paragraph g) of the Resolution, the Secretariat proceeded with the compilation of information regarding the species mentioned in the table above. The UNEP World Conservation Monitoring Centre (UNEP-WCMC) was engaged to compile information about the biology and management of and trade in these species, and to provide a preliminary categorization of the species in compliance with paragraphs h) and i). The Secretariat transmitted the resulting reports from UNEP-WCMC to relevant range States on 13 and 19 December 2013, which had 60 days to submit comments in accordance with paragraph j). Kinyongia fischeri United Republic of Tanzania Kinyongia tavetana United Republic of Tanzania Ptyas mucosus6. The species reports of UNEP-WCMC present conclusions about the effects of international trade on the selected species, the basis on which such conclusions are made, and problems with the implementation of Article IV of the Convention. They provide preliminary categorizations of each species into one of the three categories outlined in paragraph i) of Resolution Conf. 12.8 (Rev. CoP13), namely: i) 'species of urgent concern' shall include species for which the available information indicates that the provisions of Article IV, paragraph 2 ...

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Section: General Distribution and Statusmentioning

confidence: 99%

A Short Review of the International Trade of Wild Tortoises and Freshwater Turtles Across the World and Throughout Two Decades

Luiselli

Starita

Carpaneto³

et al. 2016

Chelonian Conservation and Biology

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show abstract

“…For 5 months (April to August 2004) temperature and precipitation data were obtained from manual records at the Los Amigos Biological Station (data and recording details available from: http://atrium.andesamazon.org/ meteo_station_display_info.php?id = 13). These variables were selected as previous studies have shown their importance in relation to observed sighting rates and abundances (TOWNSEND et al 2005, COWAY-GOMEZ 2007, ESCALONA et al 2009b.…”

Section: Methodsmentioning

confidence: 99%

“…The mean air temperature during the trip (for 18 trips from April to August 2004 where weather station data was not available we used manually recorded maximum daily values), water level (daily mean) and two categorical factors of sunlight and rain (binary presence and absence) recorded during the trip were used to model abiotic conditions that are known to influence P. unifilis activity (TOWNSEND et al 2005, COWAY-GOMEZ 2007, ESCALONA et al 2009b. We also included a continuous linear measure of time to test for a temporal trend (i.e.…”

Section: Methodsmentioning

confidence: 99%

Abiotic modulators of Podocnemis unifilis (Testudines: Podocnemididae) abundances in the Peruvian Amazon

Norris¹,

Pitman²,

Gonzalez³

et al. 2011

Zoologia (Curitiba, Impr.)

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“…Similarly, in Bolivia, along the rivers Itenéz and Paraguá, the abundance of P. unifilis was higher in areas distant from urban sites (Coway-Gomez, 2007). In the Amazon, meat, viscera and turtle eggs are important sources of protein for riverine and indigenous populations, but are appreciated by urban human communities due to the cultural habit maintained by generations of riverine origin (Duarte et al 2008).…”

Section: Discussionmentioning

confidence: 99%

ANTHROPOGENIC IMPACTS ON YELLOW-SPOTTED RIVER TURTLE Podocnemis unifilis (REPTILIA: PODOCNEMIDIDAE) FROM THE BRAZILIAN AMAZON

2016

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The purpuse of this study was to investigated the influence of anthropogenic impacts on Podocnemis unifilis nesting on a stretch from Falsino river, with two forest reserves, and one urban area on the Araguari river, state of Amapá, eastern Amazon (Brazil). A total of 180 nests were found, being 89.4 % in the forest reserves and only 10.6 % in urban areas. On Falsino river, we observed a spawning pattern, because the number of nests was correlated to the length and width of the nesting locations. On Araguari river, the P. unifilis nests were generally found in areas with surrounding vegetation up to 5 meters in height, minimum distance of 120 meters from residences and immediately or after places of higher exploration of pebbles. Females from Falsino river had smaller eggs, but the neonates were bigger and with higher body condition index than the neonates from Araguari river. About 80 % of the nests were prey, mostly because of the large collection of eggs for feeding. Furthermore, it was found that adult turtle hunting has been intense. Although one of the areas is in forest reserves, the human impacts were similar to those caused in urban areas, indicating the need to implement protection programs for the conservation of P. unifilis.Keywords: Amazon, eggs, freshwater turtle, neonates, nests. RESUMENEl propósito de este estudio fue investigar la influencia de los impactos antropogénicos en nidos de Podocnemis unifilis en un tramo del Río Falsino, se investigó en dos reservas forestales y tramo urbano del río Araguari, Estado de Amapá, en Amazonia (Brasil). Un total de 180 nidos fueron localizados y 89,4 % estaban en las áreas de reservas forestales, pero sólo el 10,6 % en las zonas urbanas. En el río Falsino, hubo desove patrón, el número de nidos se correlacionó con la longitud y la anchura de los sitios de anidación. En Río Araguari, nidos de P. unifilis se encuentran generalmente en lugares con vegetación circundante de hasta 5 metros de altura, distancia mínima de 120 metros de residencial y de inmediato o después de los lugares de mayor explotación de los guijarros. En el río Falsino, aunque las hembras han demostrado huevos más pequeños, los recién nacidos fueron mayores y la puntuación cuerpo también es mayor que en los recién nacidos del río Araguari. En la región del Río Araguari, aproximadamente el 80 % de los nidos fueron depredados, debido a la gran colección de huevos para la alimentación. Se observó que la presión de caza en las tortugas adultas ha sido intensa. Aunque es una de las áreas a ser bosques protegidos, los impactos humanos fueron similares a los de las zonas urbanas, lo que indica la necesidad de implementar programas de protección para la conservación de P. unifilis.

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Effects of Human Settlements on Abundance of Podocnemis unifilis and P. expansa Turtles in Northeastern Bolivia

Cited by 39 publications

References 10 publications

A Short Review of the International Trade of Wild Tortoises and Freshwater Turtles Across the World and Throughout Two Decades

A Short Review of the International Trade of Wild Tortoises and Freshwater Turtles Across the World and Throughout Two Decades

Abiotic modulators of Podocnemis unifilis (Testudines: Podocnemididae) abundances in the Peruvian Amazon

ANTHROPOGENIC IMPACTS ON YELLOW-SPOTTED RIVER TURTLE Podocnemis unifilis (REPTILIA: PODOCNEMIDIDAE) FROM THE BRAZILIAN AMAZON

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