Results 41 to 50 of about 1,118 (170)

Determination of the ecological water quality in the Orienco stream using benthic macroinvertebrates in the Northern Ecuadorian Amazon

open access: yesIntegrated Environmental Assessment and Management, Volume 19, Issue 3, Page 615-625, May 2023., 2023
Abstract In recent years, pollution of watercourses in nearby protected ecosystems has increased due to urbanization. Standard physiochemical methods and probes are one way to monitor watercourses for quality. However, they often do not provide the full ecological status of the body of water.
Federico Sinche   +4 more
wiley   +1 more source

Community-based population recovery of overexploited Amazonian wildlife [PDF]

open access: yes, 2017
The Amazon Basin experienced a pervasive process of resource overexploitation during the 20th-century, which induced severe population declines of many iconic vertebrate species.
Antunes, André P.   +4 more
core   +1 more source

Macro-habitat preferences by the African manatee and crocodiles – ecological and conservation implications [PDF]

open access: yes, 2012
African manatees (<i>Trichechus senegalensis</i>) and crocodiles are threatened species in parts of their range. In West Africa, crocodiles may constitute the main predators for manatees apart from humans.
E. Politano   +5 more
core   +1 more source

Status of the Amazonian manatee (Trichechus inunguis) in the Cuyabeno Reserve, Ecuador

open access: yesACI Avances en Ciencias e Ingenierías, 2010
Amazonian manatees live in black water rivers and lakes in the Amazon basin. A study of Amazonian manatees in the Cuyabeno Reserve conducted by Timm et al.
Judith Denkinger
doaj   +1 more source

A Fetal-Maternal Shift of Blood Oxygen Affinity in an Australian Viviparous Lizard, Sphenomorphus quoyii (Reptilia, Scincidae) [PDF]

open access: yes, 1981
Compared to adults, the oxygen affinity of blood from fetal Sphenomorphus quoyii is very much higher: P50 is approximately 70 Torr in adults and 30 Torr in nearly full term embryos (PC02= 17 Torr, T=34 degrees C).
A Riggs   +22 more
core   +1 more source

Advances in the knowledge of the biology and conservation of the Amazonian manatee (Trichechus inunguis)

open access: yesLatin American Journal of Aquatic Mammals, 2023
The last relevant work that reviewed the biological and conservation aspects of the Amazonian manatee (Trichechus inunguis) was published almost 30 years ago. In these three decades, scientific knowledge about the species has advanced substantially. This review article updates knowledge about the various biological and conservation aspects of Amazonian
Rodrigo Amaral   +9 more
openaire   +1 more source

Phylogeography and sex-biased dispersal across riverine manatee populations (Trichechus inunguis and Trichechus manatus) in South America. [PDF]

open access: yesPLoS ONE, 2012
Phylogeographic patterns and sex-biased dispersal were studied in riverine populations of West Indian (Trichechus manatus) and Amazonian manatees (T.
Paula Satizábal   +7 more
doaj   +1 more source

Aspectos Morfológicos do cordão umbilical de búfalos (Bubalus bubalis) [PDF]

open access: yes, 2009
Buffalo is an important livestock resource, with a great participation in agricultural systems, providing milk, meat, and work power. Umbilical cord is responsible for maternal-fetal nutrients exchange during pregnancy, and its alterations can compromise
BRANCO, Érika   +8 more
core   +2 more sources

INTERACTIONS BETWEEN CALVES OF AMAZONIAN MANATEES IN PERU: A STUDY CASE

open access: yesActa Biológica Colombiana, 2016
Trichechus inunguis is an endemic species of the Amazon, which inhabits mainly in lakes and calm rivers. The objective of this study case was to describe the social behaviour of two female-orphaned calves, of T. inunguis in captivity. They were kept in the same pool at the facilities of the Amazon Rescue Center (ARC, Iquitos, Peruvian Amazon).
ARÉVALO-SANDI, Alexander Roldán   +1 more
openaire   +4 more sources

Case Report: Agonistic interaction between Amazonian manatee (Trichechus inunguis) and Tucuxi dolphins (Sotalia fluviatilis) in Brazil

open access: yesFrontiers in Ethology
BackgroundInterspecific interactions play an important role in shaping ecological relationships, yet descriptions of social interspecific interactions in aquatic mammals remain scarce.
Layse Albuquerque   +12 more
doaj   +1 more source

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