Papers by Jhonson Vizcarra
Revista Peruana de Biología
En la presente nota se describe la existencia de una nueva colonia reproductiva de Sternula lorat... more En la presente nota se describe la existencia de una nueva colonia reproductiva de Sternula lorata en Pampa El Palo, ubicado en el distrito y la provincia de Ilo, departamento de Moquegua. Entre agosto de 2016 y marzo de 2017 se registraron de 8 a 324 S. lorata y se encontraron 12 nidos activos. El área reproductiva comprende unas 600 ha y se caracteriza por ser una zona abierta con suelo de tipo arenoso y presencia de conchuelas. Esta especie enfrenta algunas amenazas antrópicas en el lugar, tales como el tránsito de vehículos motorizados, el paso de pescadores locales y la presencia de perros domésticos.
Ciencia & Desarrollo
Se presenta evidencia de diecisiete varamientos de cetáceos producidos en las siguientes localida... more Se presenta evidencia de diecisiete varamientos de cetáceos producidos en las siguientes localidades: Mejía (Arequipa), Punta Coles (Moquegua), asi como Ite, Llostay y Los Palos (Tacna). Los varamientos se registraron en el periodo 2016-2021. Las especies identificadas fueron: Balaenoptera musculus, Megaptera novaeanglieae, Tursiops truncatus, Delphinus delphis, Phocoena spinipinnis, y Lagenorhynchus obscurus. En el caso de Mysiticeti se estimó la masa de animales frescos varados, así como la causa aparente de varamiento por interacción con las pesquerías. Los Palos fue la única localidad con varamientos de Mysticeti, mientras que la especie con mayor número de varamiento fue Phocoena spinipinnis, la cual se reporta para las localidades de Mejía (Arequipa), Ite y Los Palos (Tacna).
The biologist, 2010
In this note we present the first documented record of Limosa fedoa (Linnaeus, 1758) in Ite Wetla... more In this note we present the first documented record of Limosa fedoa (Linnaeus, 1758) in Ite Wetlands, Peru. An individual of this species was observed in February of 2010.
Journal of Hazardous Materials, 2022
In the present contribution, two nationwide surveys of personal protective equipment (PPE) pollut... more In the present contribution, two nationwide surveys of personal protective equipment (PPE) pollution were conducted in Peru and Argentina aiming to provide valuable information regarding the abundance and distribution of PPE in coastal sites. Additionally, PPE items were recovered from the environment and analyzed by Fourier transformed infrared (FTIR) spectroscopy, Scanning electron microscopy (SEM) with Energy dispersive X-ray (EDX), and X-ray diffraction (XRD), and compared to brand-new PPE in order to investigate the chemical and structural degradation of PPE in the environment. PPE density (PPE m−2) found in both countries were comparable to previous studies. FTIR analysis revealed multiple polymer types comprising common PPE, mainly polypropylene, polyamide, polyethylene terephthalate, and polyester. SEM micrographs showed clear weathering signs, such as cracks, cavities, and rough surfaces in face masks and gloves. EDX elemental mapping revealed the presence of elemental additives, such as Ca in gloves and face masks and AgNPs as an antimicrobial agent. Other metals found on the surface of PPE were Mo, P, Ti, and Zn. XRD patterns displayed a notorious decrease in the crystallinity of polypropylene face masks, which could alter its interaction with external contaminants and stability. The next steps in this line of research were discussed.
The Biologist, 2018
We describe our observations about the presence and nesting of Cinclodes taczanowskii (Berlepsch ... more We describe our observations about the presence and nesting of Cinclodes taczanowskii (Berlepsch & Stolzmann, 1892) and Sicalis raimondii (Taczanowski, 1874) in Punta San Pablo, located on the coast of the department of Tacna, southern Peru. Both species coincide during their reproductive stages and build their nests between cracks and rocky cavities of the place. In total, three nests were found, one of C. taczanowskii and two of S. raimondii.
The Biologist
Se documentan los primeros registros del Picogrueso de Vientre Dorado (Pheucticus chrysogaster Le... more Se documentan los primeros registros del Picogrueso de Vientre Dorado (Pheucticus chrysogaster Lesson 1832) para el departamento de Tacna, Perú. Entre el 2006 y 2017 se observaron ejemplares machos y hembras en las Lomas de Tacahuay. Estos registros extienden el rango de distribución de esta especie en el Perú en 130 km hacia el sur.
The Biologist, 2011
The presence of Riparia riparia (Linnaeus, 1758) in Ite Wetlands is confirmed. Two individuals we... more The presence of Riparia riparia (Linnaeus, 1758) in Ite Wetlands is confirmed. Two individuals were observed in January 2011. This record occurs 13 years after the first mention of its presence in these wetlands.
The Biologist, 2010
As a result of observations of birds carried out between July of 2002 and December of 2007 in Ite... more As a result of observations of birds carried out between July of 2002 and December of 2007 in Ite Wetlands and surroundings, and comparison with isolated records carried out previously, I present 49 new records, of a total of 146 species of registered birds. Seven previous records require of confirmation in the area.
The Biologist, 2010
The presence of Steatornis caripensis (Humboldt, 1817) in two sites located in Putina Punco (14º1... more The presence of Steatornis caripensis (Humboldt, 1817) in two sites located in Putina Punco (14º13'00'' S-69º09'50'' W; 850 msnm), department of Puno, Peru was described. This species only uses these sites to nest, disappearing post-breeding; the nests are built in the rocky walls of the gulches Tunquimayo and Arco Punco, which are exposed by the light of the day. Probably, this it is the first records of breeding of this species in this type of habitats in the Peru.
The Biologist, 2011
The use of a high-voltage electrical tower by a pair of Phalcoboenus megalopterus (Meyen, 1834) t... more The use of a high-voltage electrical tower by a pair of Phalcoboenus megalopterus (Meyen, 1834) to construct their nest in the agricultural zone of Proter (17º48'S 70º34'O; 490 msnm) in the Valley of Sama, Tacna, Peru was described. Apparently, the birds abandoned the nest after failing to reproduce successfully. Possibly, this is the first record of the intention to nest at low altitude for this species in Peru.
Figura 4. Ejemplares de P. andinus en vuelo en los Humedales de Ite, Tacna, Perú,
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Papers by Jhonson Vizcarra