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• W1965708213 abstract "Of the roughly 604 species and subspecies of indigenous plants of the Galápagos Islands, 144 may be termed rare, and these are listed with notes on their intra-archipelago distribution, the present state of their populations, and developments that have occurred in recent years. Threats to their existence are identified, and evaluation made of their status on each of the major islands. It is shown that the endemic plants are more vulnerable to the impact of man—31% are rare, and 38% of these have stable populations, whereas 20% of the native plants are rare, and of these 55% grow in stable stands. The main threats are land exploitation (threatening 54% of the rare plants), introduced animals (40%), and introduced plants (19%). There are considerable differences between the islands: on those which are inhabited land-use activities and introduced plants cause the worst problems; on some of the uninhabited islands population explosions of goats and pigs have brough the situation close to ecological disaster. The recent catastrophic fire on Sierra Negra has seriously affected at least 18 rare species. Recommendations are made to increase the priority of rare plant species preservation in management plans. En las Islas Galápagos se encuentran aproximadamente 604 especies y subespecies indígenas de plantas vasculares (S[ermatophyta y Pteridophyta). De ellos 144 son raras. Se presenta una lista de estas plantas con notas de su distribución en el archipielago, el estado presente de sus poblaciones, y el desarollo ocurido en los años recientes. Se identifican los peligros amenazando su existencia. Se presenta una evaluación del estado y destino en cada una de las islas mayores. Se muestra, que las plantas endémicas son mas vulnerables por la influencia humana: 31% de las plantas endémicas son raras; de aquellas 38% tienen poblaciones estables; por su lado las plantas nativas incluyan 20% de plantas raras, de aquellas 55% crecen en poblaciones estables. Las amanezas mas serias son explotación de area (amenazando 54% de las plantas raras), animales introducidos (40%) y plantas introducidos (19%). Hay diferencias considerables entre las islas: En las pobladas, uso del area y plantas introducidas constituyen las problemas peores: en algunas islas deshabitadas, explosión de las poblaciones salvajes de cabras y cerdos han causado condiciones cerca de desastres ecologicos. El recien fuego inmenso en Volcan Sierra Negra ha afectado seriamente a lo menos 18 especies raras. Se propone unas recomendaciones para augmentar la prioridad de conservación de especies raras de plantas en los planes de manejo del Parque Nacional de Galápagos." @default.
• W1965708213 created "2016-06-24" @default.
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• W1965708213 date "1989-01-01" @default.
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• W1965708213 title "The rare plants of the Galápagos Islands and their conservation" @default.
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• W1965708213 doi "https://doi.org/10.1016/0006-3207(89)90019-0" @default.
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