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of the madeira and selvagens archipelagos - redmic

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xa de 50%, seguindo -se os Basidiomycota, que ocorrem<br />

numa proporção de 40%. Os outros fungos são vestigiais,<br />

1%, assim como os Oomycetes, também com 1%. Os<br />

Myxomycetes atingem os 8%.<br />

Em Cabo Verde, os Basidiomycota representam mais de<br />

2/3 da micobiota, com evidência para os Pucciniomycetes<br />

(ferrugens). Os Ascomycota ocorrem na proporção de 16%<br />

e os outros fungos, assim como os Myxomycetes, representam<br />

só 2%. Os Oomycetes atingem os 5%.<br />

Esta maior semelhança entre a micobiota da Madeira e<br />

a das Canárias é ainda evidente qu<strong>and</strong>o se comparam as<br />

espécies entre os vários arquipélagos com base no Índice<br />

de Kroeber (ver metodologia). Em resultado da aplicação<br />

desta fórmula (Fig. 4), verifica -se que entre estas duas regiões<br />

há 22,4% de taxa comuns, enquanto, se compararmos<br />

a Madeira com os Açores, essa percentagem desce para<br />

13% e, com Cabo Verde, atinge um valor mínimo de 2,7%.<br />

Não é de estranhar esta maior semelhança entre a micobiota<br />

da Madeira e a das Canárias, já que ambos os arquipélagos<br />

beneficiam de um clima mediterrânico.<br />

Açores – 13%<br />

Cabo Verde – 2.7%<br />

67<br />

followed by <strong>the</strong> Basidiomycota (40%), while <strong>the</strong> remaining<br />

true Fungi groups are vestigial (1%) as well as <strong>the</strong> Oomycetes<br />

(1%) <strong>and</strong> <strong>the</strong> Myxomycetes, which amount to 8%. More<br />

than 2/3 <strong>of</strong> mycobiota in <strong>the</strong> Cape Verde archipelago are<br />

Basidiomycota, mainly represented by <strong>the</strong> Pucciniomycetes<br />

(rusts); <strong>the</strong> Ascomycota occur in <strong>the</strong> proportion <strong>of</strong> 16%,<br />

<strong>the</strong> remaining true Fungi as well as <strong>the</strong> Myxomycetes represent<br />

only 2% each <strong>and</strong> <strong>the</strong> Oomycetes amount to 5%.<br />

This higher similitude between <strong>the</strong> mycobiota <strong>of</strong> <strong>the</strong> Madeira<br />

<strong>and</strong> Selvagens <strong>archipelagos</strong> <strong>and</strong> <strong>the</strong> Canary Isl<strong>and</strong>s is<br />

clearly shown when using <strong>the</strong> Kroeber Index (explained in<br />

<strong>the</strong> methods section) to compare <strong>the</strong> species’ composition<br />

in different <strong>archipelagos</strong>. Applying this equation, <strong>the</strong> first<br />

two <strong>archipelagos</strong> share 22.4% <strong>of</strong> <strong>the</strong> Fungi taxa, while <strong>the</strong><br />

Madeira <strong>and</strong> Azores <strong>archipelagos</strong> have only 13% <strong>of</strong> taxa in<br />

common <strong>and</strong> for Cape Verde this value falls to a minimum<br />

<strong>of</strong> only 2.7% <strong>of</strong> shared species (Fig. 4). This greater similitude<br />

in <strong>the</strong> species’ composition between <strong>the</strong> Madeira <strong>and</strong><br />

Selvagens <strong>archipelagos</strong> <strong>and</strong> <strong>the</strong> Canary Isl<strong>and</strong>s is expected<br />

since both benefit from a similar Mediterranean climate.<br />

Madeira – 100%<br />

Canárias – 22.4%<br />

Figura 4. Similitude entre a micobiota da Madeira e a dos outros arquipélagos macaronésicos<br />

com aplicação do Índice de Kroeber.<br />

Figure 4. Similitude between <strong>the</strong> mycobiota <strong>of</strong> <strong>the</strong> Madeira <strong>and</strong> Selvagens <strong>archipelagos</strong> <strong>and</strong><br />

that <strong>of</strong> o<strong>the</strong>r Macaronesian <strong>archipelagos</strong>, using <strong>the</strong> Kroeber Index.

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