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Chapter 1 - Núria BONADA

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X 2 axis<br />

X 2 axis<br />

X 2 axis<br />

3<br />

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1<br />

0<br />

-1<br />

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Flow-Depth Inst-Veg<br />

Embed<br />

pH<br />

Altitude<br />

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IASPT Shade<br />

Hetero<br />

Chan-Qua<br />

IBMWP<br />

R/L<br />

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Substrat<br />

Chan-WidthNH4+<br />

Tempo<br />

%Cal<br />

Str-Ordre<br />

%Sed<br />

275<br />

Basin-Area<br />

Local scale: Distribution patterns in Trichoptera<br />

Conductivity<br />

B L<br />

J<br />

B L LJ<br />

M ML<br />

T L<br />

L J<br />

L<br />

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Micrlon<br />

Anom<br />

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Rhyfas<br />

Potlat<br />

Haltes<br />

Brachy<br />

Adic<br />

Chaet<br />

Ecno<br />

Hypsins<br />

Hypsdi<br />

Rhydor Psychct<br />

Rhynev<br />

Philo<br />

Psychpu<br />

Athrip<br />

RhymerPotcin<br />

Halra<br />

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Rhyrel Hypssi Allotr Rhysp<br />

Odont<br />

Micrmo<br />

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Limne Hydrt<br />

Ceracl Cheum<br />

Meso<br />

Polyc Rhymun<br />

Hypsbu Hypspe Hypsbr<br />

Haldi<br />

Ortho Chima<br />

Hypsinf<br />

Rhycm<br />

Berae Tinosp RhytriIthyt<br />

Metal Allog<br />

Cyrnu<br />

Lype<br />

Mysta Hyps<br />

Synag<br />

Agap<br />

Drusb<br />

CalamGlyphTinowae<br />

Setod<br />

Steno<br />

Hypsfo Worml<br />

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-2 -1 0 1<br />

X1 axis<br />

Hypsex<br />

Figure 3. pCCA plots<br />

representing first (X1) and<br />

second (X2) axis. The graph on<br />

the top shows the distribution of<br />

samples, and the one on the<br />

bottom the distribution of taxa.<br />

Adjacent graph display the<br />

position of environmental<br />

variables. Each sample is<br />

represented by one or two letters<br />

from the basin: B=Besòs,<br />

L=Llobregat, M=Mijares,<br />

T=Turia, J=Júcar, S=Segura,<br />

AL=Almanzora, AG=Aguas,<br />

AD=Adra, G=Guadalfeo.

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