Supplementary material. Biodiversity and Conservation

Assessing the quality and usefulness of different taxonomic groups inventories in a semiarid Mediterranean region.

Daniel Bruno1, David Sánchez-Fernández1, Andrés Millán1, Rosa M. Ros 2, Pedro Sánchez-Gómez2 and Josefa Velasco1

1 (Departamento de Ecología e Hidrología, Facultad de Biología, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain).

2 (Departamento de Biología Vegetal. Facultad de Biología, Universidad de Murcia, Campus de Espinardo, 30100 Murcia, Spain).

e-mail: Phone number: 0034868884977

Figure S1. Observed species richness of a) aquatic beetles, b) aquatic bugs, c) orchids and d) bryophytes.

Figure S2. Number of database-records of a) aquatic beetles, b) aquatic bugs, c) orchids and d) bryophytes.

Figure S3. Percentages of inventory completeness values and sufficiently surveyed squares (marked squares) using Clench function for a) aquatic beetles, b) aquatic bugs, c) orchids and d) bryophytes.

Figure S4. Percentages of inventory completeness values and sufficiently surveyed squares (marked squares) using Jackknife 1 estimator for a) aquatic beetles, b) aquatic bugs, c) orchids and d) bryophytes.

Table S1. List of the potential environmental variables used to test the differences between SSS and the rest ones. The asterisk indicates the variables that remained to subsequent analysis after Spearman rank correlations were applied.

Type / Variable
Spatial
A1* / Latitude (UTM Y)
A2* / Longitude (UTM X)
Topographic
B1* / Altitudinal range (m) (B3-B2)
B2 / Minimum altitude (m)
B3 / Maximum altitude (m)
B4* / Mean altitude (m)
Climatic
C1 / Annual mean temperature (°C * 10)
C2* / Max temperature of warmest month (°C * 10)
C3 / Min temperature of coldest month (°C * 10)
C4* / Mean temperature of wettest quarter (°C * 10)
C5 / Mean temperature of driest quarter (°C * 10)
C6 / Mean temperature of warmest quarter (°C * 10)
C7 / Mean temperature of coldest quarter (°C * 10)
C8* / Temperature mean diurnal range (Mean of monthly (max temp - min temp)) (°C * 10)
C9* / Temperature annual range (C2-C3) (°C * 10)
C10 / Temperature seasonality (standard deviation *100)
C11* / Isothermality (C8/C9)(*100)
C12 / Average annual precipitation (mm)
C13 / Precipitation of wettest month (mm)
C14 / Precipitation of driest month (mm)
C15 / Precipitation seasonality (Coefficient of Variation)
C16 / Precipitation of driest quarter (mm)
C17* / Precipitation of wettest quarter (mm)
C18 / Precipitation of warmest quarter (mm)
C19 / Precipitation of coldest quarter(mm)
C20* / Monthly mean solar radiation (Mj/m2 /day)
C21* / Aridity (C12/C23)
C22 / Real evapotranspiration (mm)
C23 / Potential evapotranspiration (mm)
Land use
D1* / % Natural land
D2* / % Urban land
D3* / % Drylands
D4* / % Irrigated lands
Attractiveness
E1* / % Protected natural areas
E2* / Distance to the main research centre (km)

Spatial variables values correspond to the square centroid. Topographical variables were obtained from a Digital Elevation Model (Clark University, 2000). Climate data (original resolution 1 km) are based on Worldclim variables and land-use data (original resolution 280 m) were provided by the European Environment Agency (EEA, 2000)

Table S2. Number of database records, species observed richness and number of well surveyed squares (SSS) in the different physioclimatic subregions of the study area.

Northwest / Interior / Coast / Total
Number of squares / 13 / 49 / 81 / 143
Aquatic beetles / Number of records / 323 / 785 / 2717 / 3825
Species Richness / 98 / 110 / 124 / 162
Number of SSS / 1 / 2 / 15 / 18
Aquatic bugs / Number of records / 55 / 312 / 1109 / 1476
Species Richness / 15 / 27 / 31 / 33
Number of SSS / 1 / 6 / 24 / 31
Orchids / Number of records / 151 / 278 / 473 / 902
Species Richness / 16 / 22 / 20 / 31
Number of SSS / 2 / 4 / 19 / 25
Bryophytes / Number of records / 312 / 1230 / 1765 / 3307
Species Richness / 128 / 166 / 186 / 230
Number of SSS / 0 / 0 / 0 / 0

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