Results 61 to 70 of about 502 (160)

Counting animals in orthomosaics from aerial imagery: Challenges and future directions

open access: yesMethods in Ecology and Evolution, Volume 16, Issue 6, Page 1051-1060, June 2025.
Abstract The use of drones to survey and monitor wildlife populations has increased exponentially. A common protocol used for data collection is planning flights with substantial overlap between successive photographs and lateral lines and then creating orthomosaics by merging the collected images.
Ismael V. Brack   +7 more
wiley   +1 more source

Paraorientatractis semiannulata n. g., n. sp. (Cosmocercoidea: Atractidae) from the Large Intestine of the SideNecked Turtle, Podocnemis unifilis Troschel, 1848 (Testudines: Pelomedusidae) in Brazil

open access: yesMemorias do Instituto Oswaldo Cruz, 1997
Specimens collected from the large intestine of the sidenecked turtle Podocnemis unifilis Troschel, 1848 in the region of Cuminá and Trombetas rivers near Pará, Brazil are assigned to a new genus and new species of the nematode superfamily Cosmocercoidea
Gibbons Lynda M   +2 more
doaj  

Podocnemis venezuelensis, a new fossil pelomedusid (Testudines, Pleurodira) from the Pliocene of Venezuela and a review of the history of Podocnemis in South America

open access: yes, 1971
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Wood, Roger Conant, De Gamero, M L Diaz
openaire   +2 more sources

Interdependencies between Indigenous peoples, local communities, and freshwater systems in a changing Amazon

open access: yesConservation Biology, Volume 39, Issue 3, June 2025.
Abstract Globally, Indigenous peoples and local communities (IPs and LCs) are fighting for the recognition of their knowledge and decision‐making authority in freshwater conservation. In the Amazon, decision‐making around freshwater management and conservation has often overlooked Indigenous and local knowledge (ILK) and the connections between ...
Simone Athayde   +8 more
wiley   +1 more source

Hydrological Connectivity Enhances Fish Biodiversity in Amazonian Mining Ponds: Insights From eDNA and Traditional Sampling

open access: yesMolecular Ecology, Volume 34, Issue 11, June 2025.
ABSTRACT Artisanal and small‐scale gold mining (ASGM) expansion in the Madre de Dios region of the Peruvian Amazon has transformed primary forests into a novel wetland complex of thousands of abandoned mining ponds. Despite their ecological relevance, post‐mining recovery of these systems remains understudied, particularly regarding fish biodiversity ...
Camila Timana‐Mendoza   +7 more
wiley   +1 more source

Animais silvestres utilizados como recurso alimentar em assentamentos rurais no município de Uruará, Pará, Brasil

open access: yesDesenvolvimento e Meio Ambiente, 2015
The consumption of hunting animals is of fundamental importance for human subsistence in different tropical areas. Knowing the chosen species, the techniques of capture and the quantity are fundamental aspects to understand how to use and the degree of ...
Reinaldo Lucas Cajaiba   +2 more
doaj   +1 more source

Allometry of reproduction of Podocnemis expansa in Southern Amazon basin

open access: yesAmphibia-Reptilia, 2006
Abstract Podocnemis expansa (giant Amazon freshwater turtle) is the biggest freshwater turtle of South America. Like in other reptiles, the nest of P. expansa is a hole in the sand deep enough to avoid predators and extremes of temperature and humidity.
Bonach, K.   +2 more
openaire   +2 more sources

Morphology, development and heterochrony of the carapace of Giant Amazon River Turtle Podocnemis expansa (Testudines, Podocnemidae)

open access: yesPesquisa Veterinária Brasileira, 2016
: With aim to report the ontogeny of the osseous elements of the carapace in Peurodiras, 62 embryos and 43 nestlings of Podocnemis expansa were collected and submitted to the clearing and staining technique of bones and cartilages and study of serial ...
Lucélia G. Vieira   +5 more
doaj   +1 more source

Distribution and Status ofPodocnemis lewyanain the Magdalena River Drainage of Colombia

open access: yesChelonian Conservation and Biology, 2008
ABSTRACT We obtained evidence of the continued presence of Podocnemis lewyana in 18 different sites within the Magdalena River drainage of northern Colombia. However, abundances at most sites were low, even in areas where the species had previously been reported as common.
Restrepo Isaza, Adriana   +3 more
openaire   +3 more sources

Contribución al conocimiento de la reproducción de Podocnemis Lewyana Dumeril (Reptilia: Quelonia: Pelomedusidae)

open access: yesCaldasia, 1986
En Colombia se encuentran 5 especies del Género Podocnemis : P. expansa, P. lewyana, P. sextuberculata , P. unifilis y P. vogli. De estas P. lewyana es la única que se encuentra en la zona Norte de nuestro país y es endémica para la región que abarca las
Castaño Mora Olga Victoria
doaj  

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