Radiación adaptativa: Diferenzas entre revisións
Contido eliminado Contido engadido
Sen resumo de edición |
|||
Liña 16:
| isbn = 1-4051-0378-7
| url = https://books.google.com/books?doi=SopsLRo1QyUC&pg=PA21
}}</ref> Os lagartos [[Anolis|anolinos]] do [[Caribe (rexión)|Caribe]] son un exemplo particularmente interesante dunha radiación adaptativa.<ref>[http://www87.homepage.villanova.edu/todd.jackman/anolis/parallel.html ''Parallel Adaptive Radiations - Caribbean Anoline Lizards.''] Tood Jackman. Villanova University. Retrieved 10 September 2013.</ref> As illas [[Hawai]] son un arquipélago moi illado e nel se encontran moitos exemplos de radiación adaptativa. Un exemplo excepcional de radiación adaptativa é o das especies de aves
Realizáronse moitas investigacións sobre a radiación adaptativa debido aos seus drásticos efectos na diversidade da poboación. Porén, cómpre facer máis investigación, especialmente para comprender completamente os moitos factores que afectan á radiación adaptativa. Os enfoques empíricos e teóricos son ambos útiles, aínda que cada un ten as súas desvantaxes.<ref>{{cite journal | last1 = Gavrilets | first1 = S. | last2 = Losos | first2 = J. B. | year = 2009 | title = Adaptive radiation: contrasting theory with data | url = | journal = Science | volume = 323 | issue = 5915| pages = 732–737 | doi=10.1126/science.1157966}}</ref>
Liña 65:
=== En aves hawaianas ===
<!--▼
=== En plantas hawaianas ===
▲<!--
Though the most famously recognized cases of adaptive radiation have occurred in animals such as Darwin's finches or the cichlid fish, adaptive radiation certainly occurs in plant species as well. The most famous example of adaptive radiation in plants is quite possibly the Hawaiian [[Argyroxiphium|silverswords]]. The Hawaiian [[silversword alliance]] consists of twenty-eight species of Hawaiian plants which range from trees to shrubs to vines. This is exceptional diversification as can be seen through the significant morphological differences between each species of the Hawaiian silverswords.<ref>Baldwin, Bruce G., and Michael J. Sanderson. "Age and rate of diversification of the Hawaiian silversword alliance (Compositae)." Proceedings of the National Academy of Sciences 95.16 (1998): 9402-9406.</ref> With some species, it is virtually impossible to distinguish visually that they were ever part of one species to begin with. These radiations occurred millions of years ago, but through studies over the past few decades, it has been suggested that the rate of speciation and diversification was extremely high. These high rates, as well as the fragmented landscape of the Hawaiian Islands, are key characteristics which point directly to adaptive radiation.
|