Page 7 - Macrofaunal_biodiversity_2006

Smir
Gozo/Xatt I Ahmar
Venice/Burano
Zouara
Palermo-Mondello
Mondragone
Alassio
Forte dei Marmi
Civitavecchia-S.Marinella
Sousse
Adriatic/Rodi Garnico
Adriatic/S.Benedetto del Tronto
Golf of Taranto
La Marsa (Gamarth)
Adriatic/Vasto
Cabes
Oran-Mostaganen
Anzio
Tabarka
Circeo-S.Felice
Sete
Hammam
Barcelona
Valencia
Spadafora
Golf of Gaeta
White Tower Bay
Gnejna
Xatt I-Ahmar
Tuscany/Pisa/San Rossore
Tuscany/Grosseto/Castiglione della Pescaia
Peloponnese/Paralio Astros
Macedonia/Kavala
Korba
Kabyla Beach
Apulia/Foggia/Gargano Park/Rodi Garganico
Anatolia/Soguksu
Thermaikos
Strymonikos
Tel Rafah
Tel Aviv
Haifa
Alger-Fort de l' Eau
Crete/Pahia Ammos
Tuscany/Grosseto/Parko della Maremma
Crete/Elafonisi
Crete/Gournes
Golden Bay
Ghadira
Gozo/Ramla
Ghajn Tuffieha
Qarraba
Creixell
Chios/Volissos
Content accessed by IP address 193.188.47.42 on 15/06/2017
Chios/Komi
Chios/Karfas
Sidi Abd El Rahman
Abu Talat
Idku
Sidi krier
Port Said
Ma'mura
Burg El Arab
Ras El Hekma
Ras El Barr
Mersa Matrouh
El Hammam
Chatby Beach
El Agami
Muntazah
Rashid
Ir Ramla tat Torri
Sicily/Favignana
Almeria
40 80
% S rensen Similarityø
Figure 4. Cluster analysis dendrogram, derived by the macrofaunal species composition of the intertidal
sandy beaches at the pan-Mediterranean scale.
tween the last two ones, in which there can be seen sandy beaches from various areas
of the Mediterranean: Levantine Basin, Adriatic Sea, Aegean Sea, Central Basin and
Western Mediterranean.
Biodiversity across the Mediterranean intertidal habitat
Species distribution to the various Mediterranean sandy beaches was analyzed by
means of the Taxonomic Distinctness Indices. The resulting funnels are presented in
Figure 5.
Most of the extensively studied beaches, locations from Crete and from the
Maremma Regional Park, are located at the lower part of the funnel (Figure 5a),
indicating a lower than expected Delta values. These low Delta values are associated
with low values in Variation in Taxonomic Distinctness (Lambda) shown in Figure
5b. In this graph, many other sandy beach locations seem to have lower than expected
Lambda values, as well.
However, the pan-Mediterranean biodiversity pattern is significantly different
when the main focus is on polychaetes. Figure 6 shows the resulting funnels of the
Taxonomic Distinctness Indices as calculated from the polychaete species distribu-
tion in the Mediterranean sandy beaches. The Cretan sandy beaches, the Maremma
Macrofauna diversity on Mediterranean sandy beaches MEDCORE