What is the most likely explanation for why the same Ecomorphs evolved on both Puerto Rico and Hispaniola group of answer choices?

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Abstract

Just as the factors responsible for the origin of an adaptation may not be responsible for its maintenance, the processes currently operating in a community may not have been important in assembling the community Consequently, historical and ecological studies must be integrated to understand why communities are structured as they are. Examples from Caribbean Anolis assemblages indicate the unique ecological insight a historical perspective can provide. In the Lesser Antilles, phylogenetic analysis indicates that character displacement probably has occurred, but perhaps only once, and that patterns of size dissimilarity across islands result from ecological size assortment subsequent to the evolutionary change in size. In the Greater Antilles, not only are communities composed of a suite of convergent "ecomorphs," but the buildup of multispecies communities has followed a very similar trajectory, a finding not demonstrable by nonhistorical analyses. Further, phylogenetic analyses suggest the appropriate direction for ecological research concerning the occurrence of "empty niches."

Journal Information

Systematic Biology is the bimonthly journal of the Society of Systematic Biologists. Papers for the journal are original contributions to the theory, principles, and methods of systematics as well as phylogeny, evolution, morphology, biogeography, paleontology, genetics, and the classification of all living things. A Points of View section offers a forum for discussion, while book reviews and announcements of general interest are also featured.

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Oxford University Press is a department of the University of Oxford. It furthers the University's objective of excellence in research, scholarship, and education by publishing worldwide. OUP is the world's largest university press with the widest global presence. It currently publishes more than 6,000 new publications a year, has offices in around fifty countries, and employs more than 5,500 people worldwide. It has become familiar to millions through a diverse publishing program that includes scholarly works in all academic disciplines, bibles, music, school and college textbooks, business books, dictionaries and reference books, and academic journals.

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Systematic Biology © 1992 Oxford University Press
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Why the same ecomorphs evolved on both Puerto Rico and Hispaniola?

Why did the different species of anole lizards evolve to occupy different parts of the habitat?

What evidence indicates that the same types of anoles evolved independently on different islands?

Why are there so many species of anoles and how did they evolve?