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Identifier |
000426400 |
Title |
Βιογεωγραφία των νησιών του Αιγαίου. H σχέση έκτασης-αριθμού ειδών |
Alternative Title |
Biogeography of the Aegean islands. The species-area relationship |
Author
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Μαρούλης, Λεωνίδας Α.
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Thesis advisor
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Πουλακάκης, Νίκος
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Reviewer
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Μυλωνάς, Μωυσής
Τριάντης, Κώστας
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Abstract |
Islands occupy a proportionally small area on Earth, however they play a crucial role in Ecology
and Biogeography, as they are “natural laboratories”. The monotonically increased number of
species, as the area increases, is such a commonly observed pattern that has been labeled as one
of the few laws of Ecology. The Aegean archipelago is of broad biogeographical interest, as it has
a considerable number of islands as well as a rich paleogeographical and geological history, while
being among three continents. As a result, the composition of life in the Aegean is a mix of
european, asian, african as well as endemic species. In this framework, in the present thesis we
approached the species-area relationship (SAR) of the Aegean islands for eight different
organismic groups (Land Snails, Land Isopods, Koleoptera Tenebrionidae, Lepidoptera,
Chilopoda, Birds, Reptiles and Amphibians, and Plants). Statistical analyses were performed in R
with the package “sars”, which allows the fit and comparison of 20 different models that have
been proposed to describe SAR. For all the taxonomical groups that were examined a strong
correlation between the number of species and area was found, except for chilopods and
butterflies. Even though there is no universal best model for the SAR of the Aegean, the power
model performed better for invertebrates, whereas concerning verterbrates models with an
asymptote explained the data better. Further investigation for the deeper understanding of SAR
and the processes and mechanisms that shape it is required in our efforts for a better
understanding and protection of biological diversity.
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Language |
Greek |
Subject |
Biodiversity |
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Land snails |
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Model selection |
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Βιοποικιλότητα |
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Χερσαία σαλιγκάρια |
Issue date |
2019-11-29 |
Collection
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School/Department--School of Sciences and Engineering--Department of Biology--Post-graduate theses
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Type of Work--Post-graduate theses
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Permanent Link |
https://elocus.lib.uoc.gr//dlib/1/b/6/metadata-dlib-1575028445-237518-4178.tkl
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Views |
379 |