We present a list of bats collected above 2000 meters in Río Abiseo National Park. Sixteen bat s... more We present a list of bats collected above 2000 meters in Río Abiseo National Park. Sixteen bat species belonging to the Phyllostomidae and Vespertilionidae families were collected during four expeditions between 1987 and 1990. Twelve species were found within expected altitudinal ranges, but four exceeded their previously reported maximum altitudinal ranges. A comparison with other bat lists from other localities at similar altitudes is presented.
Dipteryx has been mentioned to be a gap dependent genus, however, most of the canopy tropical tre... more Dipteryx has been mentioned to be a gap dependent genus, however, most of the canopy tropical trees tolerate low light levels in their seedling/sapling stage. To explore the effect of light on growth during the early life of Dipteryx micrantha Harms, transplant experiments to different light levels were done. Growth in one-year-old seedlings transplanted to gaps and understory was higher in gaps, and related to light levels. For gaps, stepwise regression analyses showed that light is the most determinant factor on growth in diameter and height, while initial plant diameter or number of leaves were not influenced. Individuals in plantations grew much better than individuals in gaps with no notorious difference in their morphology compared to those in the forest. In general, the influence of light on growth depends on whether light levels are high, intermediate or low: it this study, growth was related to middle light levels such as those in the gaps, but it was not related to low light levels such as those of the understory or, to high light levels such as those in plantations.
Through of the analysis of the floristic composition of 16 plots of half an hectare in 12 sites w... more Through of the analysis of the floristic composition of 16 plots of half an hectare in 12 sites where the Phytotoma raimondii, Peruvian plantcutter exists, we found that richness and diversity of plants are not related to the abundance of the bird, neither the abundance of any of the 7 species used as food or for nestting, except the algarrobo (Prosopis pallida). The most frequent species in the 12 sites were algarrobo Prosopis pallida (92% of the sites), vichayo Capparis ovalifolia (67%), canutillo Grabowskia boerhaviifolia (58%), sapote Capparis scabrida (58%) and realengo Maytenus octogona (25%). Besides algarrobo, canutillo seem to be a key species because in the plots where only three species occurred, those two were present. In the plots where canutillo was present, realengo did not more than expected statistically. It is alarming the decrease and few places or habitats for the occurrence and reproduction of the Peruvian plantcutter, a species considered in danger of extinction
We describe a new species , Thomasomys macrotis , from the eastern slope of the Andes of northcen... more We describe a new species , Thomasomys macrotis , from the eastern slope of the Andes of northcentral Peru (department of San Martin, Rio Abiseo National Park). This rodent is a large-bodied, big-eared, but relatively short-tailed thomasomyne inhabiting the wet montane forest near the upper limit of the continuous forest zone. It is the second large, previously-undescribed Thomasomys to be found in the park .
The effect of light on the survival and growth of seedlings and sapling of Dipteryx micrantha (Le... more The effect of light on the survival and growth of seedlings and sapling of Dipteryx micrantha (Legunimosae) growing in mature, late successional and young successional floodplain forests was studied at Cocha Cashu, Madre de Dios, Peru during two years. Light was represented by % openness, a measure obtained through the analysis of hemispherical photographs. The median light levels received by individuals in mature and young successional forest were 1.9-2.3% and 1.9- 3.5%, respectively. In general, the mature and late successional forests had a higher proportion of seedlings (<10 mm stem diameter) and a smaller proportion of saplings (10 mm-30 mm diameter) than the young successional forest. Initial plant size (diameter, height or number of leaves) was a better predictor of survival than the light levels experienced by the plant, but variation occurred between observation years. Growth in both diameter and height was significantly related to light levels especially in mature forest, but change in the number of leaves was mainly not related with light. Initial number of leaves was a good predictor of growth in diameter and height in both mature and young successional forest. Multiple regression analyses showed that the relative influence of light, initial diameter and initial number of leaves on seedling growth varied with forest type and observation year. In most of the cases where two independent variables remained significant in the regression model, one of them was light and the other was number of leaves.
The seeds of Campsiandra angustifolia (Fabaceae: Caesalpiniodeae) as a reflex of selective pressu... more The seeds of Campsiandra angustifolia (Fabaceae: Caesalpiniodeae) as a reflex of selective pressures on dispersal and establishment. We indirectly evaluated the selective pressures on dispersal and establishment of Campsiandra angustifolia, a common water-dispersed tree from the Peruvian Amazon, analyzing the variation in the relationship between the volume occupied by dispersal and establishment structures in a total of 535 seeds from 13 trees located at three different habitats. The seeds differed one order of magnitude in their total volume. However, independently of their size and the location of the maternal tree, the relationship between the volume occupied by dispersal and establishment structures was relatively constant (~1) and showed a normal distribution with low skewness, indicating stabilizing selection. These results suggest that, in the habitats studied, dispersal and establishment processes may have similar importance to C. angustifolia. In species with seeds confine...
Ambos nidos estaban en arbustos de Grabowskia boerhaaviaefolia palo negro. Uno de ellos contenía ... more Ambos nidos estaban en arbustos de Grabowskia boerhaaviaefolia palo negro. Uno de ellos contenía dos huevos y el segundo dos pichones de unos diez días a dos semanas de edad. Una semana después, el 14 de abril de 2010 se ubicó muy cerca del segundo nido que ya estaba vacío, a dos volantones que seguían a sus padres. Son los primeros nidos activos reportados que se han encontrado desde 1934.
En este artículo presentamos una actualización del estado de conservación del “cortarramas peruan... more En este artículo presentamos una actualización del estado de conservación del “cortarramas peruano”, indicando su escasa presencia dentro del área de distribución de la especie y sus amenazas. Desde Tumbes hasta Ancash se han identificado solo seis lugares donde existen poblaciones de más de 10 individuos y tres sitios en los que se reproduce. Los resultados indican que en total la población actual sería inferior a 500 individuos. Estos sitios contienen especies de flora representativa del matorral desértico peruano, varias de las cuales están amenazadas. Los sitios son muy pequeños (entre 5 y 150 ha), están muy fragmentados y se encuentran en inminente peligro de destrucción debido a la expansión urbana y agrícola, tala ilegal, sobre pastoreo e introducción de especies vegetales exóticas.
Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto Nidos ac... more Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto Nidos activos del cortarrama peruana
Se confirma la existencia de un buen hábitat con buena disponibilidad de alimento y de sitios par... more Se confirma la existencia de un buen hábitat con buena disponibilidad de alimento y de sitios para reproducción de la cortarrama peruana en El Gramadal (Huarmey). Las dos especies más importantes para su alimentación "algarrobo" (Prosopis pallida) y "palo negro" (Grabowskia boerhaviifolia), se encuentran en suficiente cantidad en el lugar. Esta última planta también es crucial para la reproducción, ya que todos los nidos hallados fueron construidos en esta especie. Hasta el momento se han encontrado nueve nidos entre los años 2010 y 2012 entre diciembre y abril: siete nidos activos, 2 el 2010 (abril), 4 el 2011, (marzo y diciembre) y uno el 2012 (enero). También se encontraron dos nidos vacíos el 2011 (marzo y junio), además de volantones e individuos juveniles desde diciembre a junio.
We studied the effect of seed density on seed predation by following the fate of bat-dispersed Di... more We studied the effect of seed density on seed predation by following the fate of bat-dispersed Dipteryx micrantha (Leguminosae) seeds deposited under bat feeding roosts. The study was conducted in Cocha Cashu biological station, Amazonian Peru, during the fruiting period of Dipteryx. Predation of Dipteryx seeds in the area is mainly by large to medium-sized rodents. Seed deposits beneath bat feeding roosts were monitored for a 13-week period in an 18-ha study area. A total of 210 seed deposits were found, and on average, seed predators encountered 22% of them during any one week. About one-third of the seed deposits escaped predation, and those deposits that had relatively few seeds were more likely to go unnoticed by rodents than were deposits with many seeds. The mean seed destruction rate was 8% per week; deposits with many seeds tended to lose a smaller proportion of their seeds to seed predators than did deposits with few seeds. Regression tests for the weekly data showed that, at the beginning of the observation period, seed predation was not density-dependent. Later, when the total seed crop beneath roosts was high, the number of seeds predated per deposit was positively density-dependent, while the proportion of seeds predated was negatively density-dependent, indicating predator satiation. Seed deposits that had been visited by seed predators once had a higher probability of being revisited the week after, especially if they contained many seeds when first encountered. This indicates that the foraging behavior of rodents may be affected by their remembering the location of seed-rich patches.
Cette etude presente des donnees sur le regime alimentaire du renard des Andes (Pseudalopex culpa... more Cette etude presente des donnees sur le regime alimentaire du renard des Andes (Pseudalopex culpaeus), au Parc national du Rio Abiseo, au Perou. Dans 74 excrements analyses, ont ete trouvees 180 proies, principalement des rongeurs (48 %), des baies de Vaccinium (Ericacees, 29 %), des oiseaux (12 %), des grenouilles (6 %) et des insectes (5 %). La plupart des vertebres (80 %) pesaient moins de 55 g. Cette etude et d'autres portant sur le regime alimentaire du renard des Andes en Argentine, au Chili et au Perou, confirment son caractere opportuniste, pouvant passer de presqu'entierement carnivore a tres omnivore. Le renard des Andes differe des autres grands predateurs rencontres au Parc national du Rio Abiseo, par le choix de ses proies.
Over the past decade, shihuahuaco timber-comprising several species of Dipteryx (Fabaceae) traded... more Over the past decade, shihuahuaco timber-comprising several species of Dipteryx (Fabaceae) traded internationally as "cumarú" or "Brazilian teak"-has become one of the most highly demanded types of hardwood from Peruvian Amazonia, particularly in the Chinese market. Dipteryx is an ecologically important canopy-emergent genus with widespread distribution in neotropical forests. To assess the response of Dipteryx to logging, we conducted inventories in three logging areas in the Regions of Ucayali and Loreto, Peru. The size-class distributions of Dipteryx populations in recently logged sites showed that initial post-logging conditions enhance recruitment of residual seedlings. These conditions are created by a combination of logging gaps and the activities of farmers migrating into logged lands. Through protection and liberation of shihuahuaco seedlings in post-logged forest as well as within and around agricultural fields, local residents and timber companies could favor the recovery of this valued resource. However, as logged land is increasingly converted to agriculture and pastureland, the reestablishment of mature seed trees is not assured.
Go to AGRIS search. Distribucion altitudinal de roedores sigmodontinos (cricetidae) en el Parque ... more Go to AGRIS search. Distribucion altitudinal de roedores sigmodontinos (cricetidae) en el Parque Nacional Rio Abiseo, San Martin, Peru. ...
... 20 mayo 1991 LISTA ANOTADA DE LOS QUIRÓPTEROS DEL PARQUE NACIONAL MANU, PERU César F. Ascorra... more ... 20 mayo 1991 LISTA ANOTADA DE LOS QUIRÓPTEROS DEL PARQUE NACIONAL MANU, PERU César F. Ascorra1, Don E. Wilson2 y Monica Romo3 RESUMEN La ... Nuestro ejemplar fue recolectado cruzando una pequeña quebra-da ubicada en bosque de terraza alta. ...
A través del registro de la composición florística de 16 parcelas de media hectárea en 12 lugares... more A través del registro de la composición florística de 16 parcelas de media hectárea en 12 lugares donde se encontraba Phytotoma raimondii, la cortarrama peruana, se halló que la riqueza y diversidad de plantas no influyen en la abundancia del ave. Además, no existe relación entre la abundancia de alguna de las 7 especies usadas para alimento o para nidificar excepto para el algarrobo. Las plantas más frecuentes en los 12 sitios fueron el algarrobo Prosopis pallida (92% de los sitios), el vichayo Capparis ovalifolia (67%), el canutillo Grabowskia boerhaviifolia (58%), el sapote Capparis scabrida (58%) y el realengo Maytenus octogona (25%). Además del algarrobo, el canutillo parece ser una planta clave para el ave, ya que en las parcelas donde solo se encontraban tres especies de plantas, estas dos siempre estaban presentes. Se encontró también que en las parcelas donde había canutillo, no había más realengo de lo esperado al azar. Se señala la alarmante la disminución y escasez de lugares o hábitats aptos para la existencia y reproducción de la cortarrama peruana, especie en grave peligro de extinción.
Resumen
En este artículo presentamos una actualización del estado de conservación del “cortarr... more Resumen En este artículo presentamos una actualización del estado de conservación del “cortarramas peruano”, in- dicando su escasa presencia dentro del área de distribución de la especie y sus amenazas. Desde Tumbes hasta Ancash se han identificado solo seis lugares donde existen poblaciones de más de 10 individuos y tres sitios en los que se reproduce. Los resultados indican que en total la población actual sería inferior a 500 individuos. Estos sitios contienen especies de flora representativa del matorral desértico peruano, varias de las cuales están amenazadas. Los sitios son muy pequeños (entre 5 y 150 ha), están muy fragmentados y se encuentran en inminente peligro de destrucción debido a la expansión urbana y agrícola, tala ilegal, sobre pastoreo e introducción de especies vegetales exóticas.
Abstract In this article, we present an update on the conservation status of the Peruvian Plantcutter. We find little pres- ence of the species within its distribution area we catalog threats to the remaining populations. From Tumbes to Ancash only six sites have been identified with populations of more than 10 individuals and only three sites where the species is known to reproduce. Results indicate that the current total population is less than 500 individuals. These sites where the species is found contain floral species typical of the Peruvian desert scrub, several of which are threatened. Sites are very small (between 5 to 150 ha), highly fragmented and are under immediate threat of destruction due to agriculture, urban expansion, illegal logging, livestock foraging, and the introduction of exotic plant species.
We present a list of bats collected above 2000 meters in Río Abiseo National Park. Sixteen bat s... more We present a list of bats collected above 2000 meters in Río Abiseo National Park. Sixteen bat species belonging to the Phyllostomidae and Vespertilionidae families were collected during four expeditions between 1987 and 1990. Twelve species were found within expected altitudinal ranges, but four exceeded their previously reported maximum altitudinal ranges. A comparison with other bat lists from other localities at similar altitudes is presented.
Dipteryx has been mentioned to be a gap dependent genus, however, most of the canopy tropical tre... more Dipteryx has been mentioned to be a gap dependent genus, however, most of the canopy tropical trees tolerate low light levels in their seedling/sapling stage. To explore the effect of light on growth during the early life of Dipteryx micrantha Harms, transplant experiments to different light levels were done. Growth in one-year-old seedlings transplanted to gaps and understory was higher in gaps, and related to light levels. For gaps, stepwise regression analyses showed that light is the most determinant factor on growth in diameter and height, while initial plant diameter or number of leaves were not influenced. Individuals in plantations grew much better than individuals in gaps with no notorious difference in their morphology compared to those in the forest. In general, the influence of light on growth depends on whether light levels are high, intermediate or low: it this study, growth was related to middle light levels such as those in the gaps, but it was not related to low light levels such as those of the understory or, to high light levels such as those in plantations.
Through of the analysis of the floristic composition of 16 plots of half an hectare in 12 sites w... more Through of the analysis of the floristic composition of 16 plots of half an hectare in 12 sites where the Phytotoma raimondii, Peruvian plantcutter exists, we found that richness and diversity of plants are not related to the abundance of the bird, neither the abundance of any of the 7 species used as food or for nestting, except the algarrobo (Prosopis pallida). The most frequent species in the 12 sites were algarrobo Prosopis pallida (92% of the sites), vichayo Capparis ovalifolia (67%), canutillo Grabowskia boerhaviifolia (58%), sapote Capparis scabrida (58%) and realengo Maytenus octogona (25%). Besides algarrobo, canutillo seem to be a key species because in the plots where only three species occurred, those two were present. In the plots where canutillo was present, realengo did not more than expected statistically. It is alarming the decrease and few places or habitats for the occurrence and reproduction of the Peruvian plantcutter, a species considered in danger of extinction
We describe a new species , Thomasomys macrotis , from the eastern slope of the Andes of northcen... more We describe a new species , Thomasomys macrotis , from the eastern slope of the Andes of northcentral Peru (department of San Martin, Rio Abiseo National Park). This rodent is a large-bodied, big-eared, but relatively short-tailed thomasomyne inhabiting the wet montane forest near the upper limit of the continuous forest zone. It is the second large, previously-undescribed Thomasomys to be found in the park .
The effect of light on the survival and growth of seedlings and sapling of Dipteryx micrantha (Le... more The effect of light on the survival and growth of seedlings and sapling of Dipteryx micrantha (Legunimosae) growing in mature, late successional and young successional floodplain forests was studied at Cocha Cashu, Madre de Dios, Peru during two years. Light was represented by % openness, a measure obtained through the analysis of hemispherical photographs. The median light levels received by individuals in mature and young successional forest were 1.9-2.3% and 1.9- 3.5%, respectively. In general, the mature and late successional forests had a higher proportion of seedlings (<10 mm stem diameter) and a smaller proportion of saplings (10 mm-30 mm diameter) than the young successional forest. Initial plant size (diameter, height or number of leaves) was a better predictor of survival than the light levels experienced by the plant, but variation occurred between observation years. Growth in both diameter and height was significantly related to light levels especially in mature forest, but change in the number of leaves was mainly not related with light. Initial number of leaves was a good predictor of growth in diameter and height in both mature and young successional forest. Multiple regression analyses showed that the relative influence of light, initial diameter and initial number of leaves on seedling growth varied with forest type and observation year. In most of the cases where two independent variables remained significant in the regression model, one of them was light and the other was number of leaves.
The seeds of Campsiandra angustifolia (Fabaceae: Caesalpiniodeae) as a reflex of selective pressu... more The seeds of Campsiandra angustifolia (Fabaceae: Caesalpiniodeae) as a reflex of selective pressures on dispersal and establishment. We indirectly evaluated the selective pressures on dispersal and establishment of Campsiandra angustifolia, a common water-dispersed tree from the Peruvian Amazon, analyzing the variation in the relationship between the volume occupied by dispersal and establishment structures in a total of 535 seeds from 13 trees located at three different habitats. The seeds differed one order of magnitude in their total volume. However, independently of their size and the location of the maternal tree, the relationship between the volume occupied by dispersal and establishment structures was relatively constant (~1) and showed a normal distribution with low skewness, indicating stabilizing selection. These results suggest that, in the habitats studied, dispersal and establishment processes may have similar importance to C. angustifolia. In species with seeds confine...
Ambos nidos estaban en arbustos de Grabowskia boerhaaviaefolia palo negro. Uno de ellos contenía ... more Ambos nidos estaban en arbustos de Grabowskia boerhaaviaefolia palo negro. Uno de ellos contenía dos huevos y el segundo dos pichones de unos diez días a dos semanas de edad. Una semana después, el 14 de abril de 2010 se ubicó muy cerca del segundo nido que ya estaba vacío, a dos volantones que seguían a sus padres. Son los primeros nidos activos reportados que se han encontrado desde 1934.
En este artículo presentamos una actualización del estado de conservación del “cortarramas peruan... more En este artículo presentamos una actualización del estado de conservación del “cortarramas peruano”, indicando su escasa presencia dentro del área de distribución de la especie y sus amenazas. Desde Tumbes hasta Ancash se han identificado solo seis lugares donde existen poblaciones de más de 10 individuos y tres sitios en los que se reproduce. Los resultados indican que en total la población actual sería inferior a 500 individuos. Estos sitios contienen especies de flora representativa del matorral desértico peruano, varias de las cuales están amenazadas. Los sitios son muy pequeños (entre 5 y 150 ha), están muy fragmentados y se encuentran en inminente peligro de destrucción debido a la expansión urbana y agrícola, tala ilegal, sobre pastoreo e introducción de especies vegetales exóticas.
Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto Nidos ac... more Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto Nidos activos del cortarrama peruana
Se confirma la existencia de un buen hábitat con buena disponibilidad de alimento y de sitios par... more Se confirma la existencia de un buen hábitat con buena disponibilidad de alimento y de sitios para reproducción de la cortarrama peruana en El Gramadal (Huarmey). Las dos especies más importantes para su alimentación "algarrobo" (Prosopis pallida) y "palo negro" (Grabowskia boerhaviifolia), se encuentran en suficiente cantidad en el lugar. Esta última planta también es crucial para la reproducción, ya que todos los nidos hallados fueron construidos en esta especie. Hasta el momento se han encontrado nueve nidos entre los años 2010 y 2012 entre diciembre y abril: siete nidos activos, 2 el 2010 (abril), 4 el 2011, (marzo y diciembre) y uno el 2012 (enero). También se encontraron dos nidos vacíos el 2011 (marzo y junio), además de volantones e individuos juveniles desde diciembre a junio.
We studied the effect of seed density on seed predation by following the fate of bat-dispersed Di... more We studied the effect of seed density on seed predation by following the fate of bat-dispersed Dipteryx micrantha (Leguminosae) seeds deposited under bat feeding roosts. The study was conducted in Cocha Cashu biological station, Amazonian Peru, during the fruiting period of Dipteryx. Predation of Dipteryx seeds in the area is mainly by large to medium-sized rodents. Seed deposits beneath bat feeding roosts were monitored for a 13-week period in an 18-ha study area. A total of 210 seed deposits were found, and on average, seed predators encountered 22% of them during any one week. About one-third of the seed deposits escaped predation, and those deposits that had relatively few seeds were more likely to go unnoticed by rodents than were deposits with many seeds. The mean seed destruction rate was 8% per week; deposits with many seeds tended to lose a smaller proportion of their seeds to seed predators than did deposits with few seeds. Regression tests for the weekly data showed that, at the beginning of the observation period, seed predation was not density-dependent. Later, when the total seed crop beneath roosts was high, the number of seeds predated per deposit was positively density-dependent, while the proportion of seeds predated was negatively density-dependent, indicating predator satiation. Seed deposits that had been visited by seed predators once had a higher probability of being revisited the week after, especially if they contained many seeds when first encountered. This indicates that the foraging behavior of rodents may be affected by their remembering the location of seed-rich patches.
Cette etude presente des donnees sur le regime alimentaire du renard des Andes (Pseudalopex culpa... more Cette etude presente des donnees sur le regime alimentaire du renard des Andes (Pseudalopex culpaeus), au Parc national du Rio Abiseo, au Perou. Dans 74 excrements analyses, ont ete trouvees 180 proies, principalement des rongeurs (48 %), des baies de Vaccinium (Ericacees, 29 %), des oiseaux (12 %), des grenouilles (6 %) et des insectes (5 %). La plupart des vertebres (80 %) pesaient moins de 55 g. Cette etude et d'autres portant sur le regime alimentaire du renard des Andes en Argentine, au Chili et au Perou, confirment son caractere opportuniste, pouvant passer de presqu'entierement carnivore a tres omnivore. Le renard des Andes differe des autres grands predateurs rencontres au Parc national du Rio Abiseo, par le choix de ses proies.
Over the past decade, shihuahuaco timber-comprising several species of Dipteryx (Fabaceae) traded... more Over the past decade, shihuahuaco timber-comprising several species of Dipteryx (Fabaceae) traded internationally as "cumarú" or "Brazilian teak"-has become one of the most highly demanded types of hardwood from Peruvian Amazonia, particularly in the Chinese market. Dipteryx is an ecologically important canopy-emergent genus with widespread distribution in neotropical forests. To assess the response of Dipteryx to logging, we conducted inventories in three logging areas in the Regions of Ucayali and Loreto, Peru. The size-class distributions of Dipteryx populations in recently logged sites showed that initial post-logging conditions enhance recruitment of residual seedlings. These conditions are created by a combination of logging gaps and the activities of farmers migrating into logged lands. Through protection and liberation of shihuahuaco seedlings in post-logged forest as well as within and around agricultural fields, local residents and timber companies could favor the recovery of this valued resource. However, as logged land is increasingly converted to agriculture and pastureland, the reestablishment of mature seed trees is not assured.
Go to AGRIS search. Distribucion altitudinal de roedores sigmodontinos (cricetidae) en el Parque ... more Go to AGRIS search. Distribucion altitudinal de roedores sigmodontinos (cricetidae) en el Parque Nacional Rio Abiseo, San Martin, Peru. ...
... 20 mayo 1991 LISTA ANOTADA DE LOS QUIRÓPTEROS DEL PARQUE NACIONAL MANU, PERU César F. Ascorra... more ... 20 mayo 1991 LISTA ANOTADA DE LOS QUIRÓPTEROS DEL PARQUE NACIONAL MANU, PERU César F. Ascorra1, Don E. Wilson2 y Monica Romo3 RESUMEN La ... Nuestro ejemplar fue recolectado cruzando una pequeña quebra-da ubicada en bosque de terraza alta. ...
A través del registro de la composición florística de 16 parcelas de media hectárea en 12 lugares... more A través del registro de la composición florística de 16 parcelas de media hectárea en 12 lugares donde se encontraba Phytotoma raimondii, la cortarrama peruana, se halló que la riqueza y diversidad de plantas no influyen en la abundancia del ave. Además, no existe relación entre la abundancia de alguna de las 7 especies usadas para alimento o para nidificar excepto para el algarrobo. Las plantas más frecuentes en los 12 sitios fueron el algarrobo Prosopis pallida (92% de los sitios), el vichayo Capparis ovalifolia (67%), el canutillo Grabowskia boerhaviifolia (58%), el sapote Capparis scabrida (58%) y el realengo Maytenus octogona (25%). Además del algarrobo, el canutillo parece ser una planta clave para el ave, ya que en las parcelas donde solo se encontraban tres especies de plantas, estas dos siempre estaban presentes. Se encontró también que en las parcelas donde había canutillo, no había más realengo de lo esperado al azar. Se señala la alarmante la disminución y escasez de lugares o hábitats aptos para la existencia y reproducción de la cortarrama peruana, especie en grave peligro de extinción.
Resumen
En este artículo presentamos una actualización del estado de conservación del “cortarr... more Resumen En este artículo presentamos una actualización del estado de conservación del “cortarramas peruano”, in- dicando su escasa presencia dentro del área de distribución de la especie y sus amenazas. Desde Tumbes hasta Ancash se han identificado solo seis lugares donde existen poblaciones de más de 10 individuos y tres sitios en los que se reproduce. Los resultados indican que en total la población actual sería inferior a 500 individuos. Estos sitios contienen especies de flora representativa del matorral desértico peruano, varias de las cuales están amenazadas. Los sitios son muy pequeños (entre 5 y 150 ha), están muy fragmentados y se encuentran en inminente peligro de destrucción debido a la expansión urbana y agrícola, tala ilegal, sobre pastoreo e introducción de especies vegetales exóticas.
Abstract In this article, we present an update on the conservation status of the Peruvian Plantcutter. We find little pres- ence of the species within its distribution area we catalog threats to the remaining populations. From Tumbes to Ancash only six sites have been identified with populations of more than 10 individuals and only three sites where the species is known to reproduce. Results indicate that the current total population is less than 500 individuals. These sites where the species is found contain floral species typical of the Peruvian desert scrub, several of which are threatened. Sites are very small (between 5 to 150 ha), highly fragmented and are under immediate threat of destruction due to agriculture, urban expansion, illegal logging, livestock foraging, and the introduction of exotic plant species.
Ninety-four bats representing 23 species were collected at the Explorers Inn Lodge, belonging to ... more Ninety-four bats representing 23 species were collected at the Explorers Inn Lodge, belonging to the families Emballonuridae, Noctilionidae, Phyllostomatidae, and Thyropteridae. With this addition, the list of bat species in the locality increases to 32. This list was compared with those from two other localities in Madre de Dios. To date, the bat species lists for these localities remain incomplete, and the number of species could potentially double.
En este trabajo se provee información cuantitativa sobre las necesidades de capacitación de los p... more En este trabajo se provee información cuantitativa sobre las necesidades de capacitación de los profesionales encargados del manejo de recursos naturales (Ej.: áreas protegidas, forestal, pesquero, y vida silvestre), así como también de las necesidades en número de personal en las principales instituciones encargadas de este manejo en Colombia, Ecuador, Perú y Bolivia. Se hace un a revisión de las instituciones que proveen capacitación y las necesidades específicas de los manejadores de Áreas Naturales protegidas entre otros temas.
En este trabajo se provee información cuantitativa sobre las necesidades de capacitación de los p... more En este trabajo se provee información cuantitativa sobre las necesidades de capacitación de los profesionales encargados del manejo de recursos naturales (Ej.: áreas protegidas, forestal, pesquero, y vida silvestre), así como también de las necesidades en número de personal en las principales instituciones encargadas de este manejo en Colombia, Ecuador, Perú y Bolivia. Se hace un a revisión de las instituciones que proveen capacitación y las necesidades específicas de los manejadores de Áreas Naturales protegidas entre otros temas.
En este trabajo se provee información cuantitativa sobre las necesidades de capacitación de los p... more En este trabajo se provee información cuantitativa sobre las necesidades de capacitación de los profesionales encargados del manejo de recursos naturales (Ej.: áreas protegidas, forestal, pesquero, y vida silvestre), así como también de las necesidades en número de personal en las principales instituciones encargadas de este manejo en Colombia, Ecuador, Perú y Bolivia. Se hace un a revisión de las instituciones que proveen capacitación y las necesidades específicas de los manejadores de Áreas Naturales protegidas entre otros temas.
La propuesta de Sistema de Conservación Regional de Amazonas al Gobierno Regional de Amazonas fue... more La propuesta de Sistema de Conservación Regional de Amazonas al Gobierno Regional de Amazonas fue aprobada en Julio del 2009. En ella se proponen 8 áreas de importancia regional basadas en sus valores de conservación (generador de agua, faunístico, florístico cultural/arqueológico y belleza escénica). Además se considera criterios de representatividad (vegetación singular y zonas de vida). Las areas propuestas son:1-Bosque seco entre Bagua y Bagua Grande, 2-Bosque seco del Marañón Balsas, 3-Bosque montano de Vista Alegre, 4-Bosque semi-caducifolio del distrito de Aramango, 5-Divisoria del río Marañón y Utcubamba, 6-Áreas inundables del río Santiago, 7-Cordillera de Lajasbamba-Yasgolga y 8-Nacientes del río Nieva.
These are the inventories of flora and fauna that served later to support the creation of the Oti... more These are the inventories of flora and fauna that served later to support the creation of the Otishi National Park, the Ashaninka Communal Reserve and the Machiguenga Communal Reserve.
Estos son los resultados de los inventarios de flora y fauna que sirvieron luego para dar sustento a la creación del Parque Nacional Otishi, Reserva Comunal Asháninka y Reserva Comunal Machiguenga.
These are the results of the flora and fauna inventories of the Tambopata area, southeast Peru, ... more These are the results of the flora and fauna inventories of the Tambopata area, southeast Peru, that served later to support the declaration of the Bahuaja-Sonene National Park, one of the top biodiversity areas.
Este libro sistematiza y analiza cinco experiencias desarrolladas en algunos departamentos del no... more Este libro sistematiza y analiza cinco experiencias desarrolladas en algunos departamentos del norte de Perú y en la ecorregión del desierto de Sechura, sobre la priorización de áreas de conservación de la biodiversidad, identificando y precisando los criterios y las metodologías empleadas así como las ventajas de cada experiencia. El objetivo de la publicación es facilitar herramientas a los Gobiernos Regionales e instituciones públicas y privadas que quieren mejorar su planificación territorial.
This book systematizes and analyzes five experiences developed in some departments of northern Peru and in the Sechura desert ecoregion, on the prioritization of biodiversity conservation areas, identifying and specifying the criteria and methodologies used, as well as the advantages of each experience. The objective of the publication is to provide tools to regional governments and other public and private institutions that want to improve their territorial planning.
Uploads
Papers by Monica Romo
En este artículo presentamos una actualización del estado de conservación del “cortarramas peruano”, in- dicando su escasa presencia dentro del área de distribución de la especie y sus amenazas. Desde Tumbes hasta Ancash se han identificado solo seis lugares donde existen poblaciones de más de 10 individuos y tres sitios en los que se reproduce. Los resultados indican que en total la población actual sería inferior a 500 individuos. Estos sitios contienen especies de flora representativa del matorral desértico peruano, varias de las cuales están amenazadas. Los sitios son muy pequeños (entre 5 y 150 ha), están muy fragmentados y se encuentran en inminente peligro de destrucción debido a la expansión urbana y agrícola, tala ilegal, sobre pastoreo e introducción de especies vegetales exóticas.
Abstract
In this article, we present an update on the conservation status of the Peruvian Plantcutter. We find little pres- ence of the species within its distribution area we catalog threats to the remaining populations. From Tumbes to Ancash only six sites have been identified with populations of more than 10 individuals and only three sites where the species is known to reproduce. Results indicate that the current total population is less than 500 individuals. These sites where the species is found contain floral species typical of the Peruvian desert scrub, several of which are threatened. Sites are very small (between 5 to 150 ha), highly fragmented and are under immediate threat of destruction due to agriculture, urban expansion, illegal logging, livestock foraging, and the introduction of exotic plant species.
En este artículo presentamos una actualización del estado de conservación del “cortarramas peruano”, in- dicando su escasa presencia dentro del área de distribución de la especie y sus amenazas. Desde Tumbes hasta Ancash se han identificado solo seis lugares donde existen poblaciones de más de 10 individuos y tres sitios en los que se reproduce. Los resultados indican que en total la población actual sería inferior a 500 individuos. Estos sitios contienen especies de flora representativa del matorral desértico peruano, varias de las cuales están amenazadas. Los sitios son muy pequeños (entre 5 y 150 ha), están muy fragmentados y se encuentran en inminente peligro de destrucción debido a la expansión urbana y agrícola, tala ilegal, sobre pastoreo e introducción de especies vegetales exóticas.
Abstract
In this article, we present an update on the conservation status of the Peruvian Plantcutter. We find little pres- ence of the species within its distribution area we catalog threats to the remaining populations. From Tumbes to Ancash only six sites have been identified with populations of more than 10 individuals and only three sites where the species is known to reproduce. Results indicate that the current total population is less than 500 individuals. These sites where the species is found contain floral species typical of the Peruvian desert scrub, several of which are threatened. Sites are very small (between 5 to 150 ha), highly fragmented and are under immediate threat of destruction due to agriculture, urban expansion, illegal logging, livestock foraging, and the introduction of exotic plant species.
Estos son los resultados de los inventarios de flora y fauna que sirvieron luego para dar sustento a la creación del Parque Nacional Otishi, Reserva Comunal Asháninka y Reserva Comunal Machiguenga.
This book systematizes and analyzes five experiences developed in some departments of northern Peru and in the Sechura desert ecoregion, on the prioritization of biodiversity conservation areas, identifying and specifying the criteria and methodologies used, as well as the advantages of each experience. The objective of the publication is to provide tools to regional governments and other public and private institutions that want to improve their territorial planning.