Nuevo registro de Melocactus peruvianus (Cactaceae) y estado de conservación del género Melocactus en el Ecuador

Salazar, Christian R. Loaiza; Moreira, Natalia Molina

doi:10.1590/2175-7860201970064

Cited by 2 publications

(2 citation statements)

References 6 publications

(9 reference statements)

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“…Population structure and habitat. -The assessed population shows a low density of individuals compared to other cactus species (Texeira et al 2004, Ceroni et al 2007, Castañeda-Romero et al 2016, Zepeda et al 2017, Loaiza and Molina-Moreira 2019, which may be related to the characteristics of the habitat where they are established and the strategies of the plant itself for its survival. There is probably competition between members of the population to obtain water and the distance between individuals has to be sufficient, so that each one receives what is necessary.…”

Section: Discussionmentioning

confidence: 94%

Geographic distribution and conservation status of Eulychnia ritteri Cullmann (Cactaceae), an endemic cactus from southern Peru

et al. 2021

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Eulychnia ritteri is endemic to Peru, restricted to the northern coast of the department of Arequipa. The lack of knowledge of this species, and threats such as human activities and climate change, put the populations at risk. In this research, we examined the geographical distribution and conservation status of E. ritteri in the coastal area of the Caravelí province. In addition, the population structure and phenology in the Quebrada Vizcachani population were evaluated using plots of 10x100 m. Data on the accompanying flora and local fauna were also obtained. Eulychnia ritteri showed five populations distributed from 15°43’ to 15°47’S, with a total area of 63.62 ha (0.63 km2). The Quebrada Vizcachani population is the largest (24.5 ha) and the Cementerio population the smallest (0.018 ha). The population density evaluated is 0.06 ind/m2, where seedlings, juveniles, adults, and dead plants were 3.61, 24.09, 56.63 and 15.67% respectively. The phenology was asynchronous, the flower buds, flowers and fruits appear in the same period. The flowers and fruits were food for insects and rodents respectively, and 18 accompanying species have been recorded. Finally, E. ritteri is categorised as endangered (EN), given its geographical distribution and identified threats.

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Section: Discussionmentioning

confidence: 94%

Geographic distribution and conservation status of Eulychnia ritteri Cullmann (Cactaceae), an endemic cactus from southern Peru

et al. 2021

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“…Considering our results, the main efforts must be focused on conserving isolated populations outside the conservation units and in the private areas, since they shelter most abundant populations and are more susceptible to anthropic threats. Meanwhile, it is important to develop strategies to enhance the connectivity between population patches, reducing the chances of local extinction and allowing dispersion and recolonization of empty areas, as well as for conservation measures such as species reintroduction and local management (Hanski & Gaggiotti 2004;Salazar & Moreira 2019).…”

Section: Discussionmentioning

confidence: 99%

Population ecology and conservation status of Parodia carambeiensis (Cactaceae)

et al. 2021

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Parodia carambeiensis is a rupicolous, small-sized species, with globose cladode and showy flowers, and is the only endemic Cactaceae species in Paraná State (Brazil). Changes in natural landscapes and fragmentation isolate populations, increasing their vulnerability to local extinctions. Our aim was to verify the spatial distribution of P. carambeiensis, reviewing its conservation status and main threats in the distribution area. Expeditions were carried out in the Campos Gerais region to record the abundance, density and spatial distribution of P. carambeiensis populations. Local landscape and climatic variables as well as the joint effect of these with geographical distance, were analyzed. Our findings highlighted that population density differs among the studied sites and was driven by distinct levels of anthropic threats such as livestock, tourism, wildfires and their proximity to highways, along with the climatic variables evaluated (temperature range and precipitation). The models jointly explained 56% of the variation in the population density, which was mostly influence by climatic factors. Parodia carambeiensis is currently classified as (LC) least concern, however, our results provide strong evidence in favor of updating its status to (EN) endangered due to the elevated extinction risk of natural populations.

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Nuevo registro de Melocactus peruvianus (Cactaceae) y estado de conservación del género Melocactus en el Ecuador

Cited by 2 publications

References 6 publications

Geographic distribution and conservation status of Eulychnia ritteri Cullmann (Cactaceae), an endemic cactus from southern Peru

Geographic distribution and conservation status of Eulychnia ritteri Cullmann (Cactaceae), an endemic cactus from southern Peru

Population ecology and conservation status of Parodia carambeiensis (Cactaceae)

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