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  • 21 Aug, 2019

  • By, Wikipedia

San Félix–San Ambrosio Islands Temperate Forests
The San Félix–San Ambrosio Islands temperate forests are a biome located on the small oceanic archipelago known as the Desventuradas Islands The islands form part of the ocean territory of Chile, and are located 850 km from the coast of Chile, and about 750 km north of the Juan Fernández Islands. Due to their remote nature and difficult conditions, they have not been the subject of great study. The islands themselves are 20 km apart, and are likely volcanic in origin.

Climate

Only San Félix's climatic characteristics are known - the climate is Mediterranean, warm, moist, and oceanic. Temperatures range from 14.3 °C - 22.5 °C, with an average of 17.8 °C. Annual rainfall is 94.8 mm, occurring mainly in winter (May-August). San Ambrosio is more favorable for the retention of fog, resulting in microclimates that are more amenable to vegetation. There are no permanent sources of freshwater on the islands, and it is likely that there are only temporary waterways which only exist during precipitation.

Flora

Due to the aforementioned remoteness, vegetation is not well characterized; only descriptive works from sporadic visits are available. The arid conditions on San Félix are reflected in its low scrubland, where coverage is no more than 25% and is predominantly 20-30 cm high bushes with cushions. Plant cover is generally better on San Ambrosio, and in areas that benefit from fog moisture, some specimens of Sonchus laceratus (syn. Thamnoseris lacerata) have been observed to grow as high as 5m.

Plants endemic to the archipelago include the monotypic genus Nesocaryum and the species Atriplex chapinii, Atriplex imbricata var. foliolosa, Chenopodium sancti-ambrosii, Perityle tenuifolius, Sonchus laceratus, Nesocaryum stylosum, Spergularia manicata, Sicyos baderoa var. ambrosianus, Frankenia vidalii, Cristaria insularis, Fuertesimalva sanambrosiana, Plantago lundborgii, Eragrostis kuschelii, and Parietaria feliciana.

  • "San Félix–San Ambrosio / Desventuradas Islands temperate forests". Terrestrial Ecoregions. World Wildlife Fund.
  • One Earth: San Félix-San Ambrosio Islands Temperate Forests

References

  1. ^ Midpoint of coordinates of San Félix and San Ambrosio, calculated here
  2. ^ Teillier, Sebastián; Vilina, Yerko (2021-04-02). "Islands off the coast of central Chile in the Pacific Ocean". World Wildlife Fund. Archived from the original on 2020-10-28. Retrieved 2021-04-02.
  3. ^ World Wildlife Fund (2012-08-01). McGinley, Mark (ed.). "San Félix-San Ambrosio Islands temperate forests". Encyclopedia of Earth. Archived from the original on 2017-09-18. Retrieved 2021-04-02.
  4. ^ Endemic plants of Desventurados Islands, World Checklist of Vascular Plants (WCVP) checklist builder. Royal Botanic Gardens, Kew. Retrieved 1 February 2025.
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