| Literature DB >> 28174509 |
Paulo A V Borges1, Clara Gaspar1, Luís Carlos Fonseca Crespo2, François Rigal3, Pedro Cardoso4, Fernando Pereira1, Carla Rego1, Isabel R Amorim1, Catarina Melo1, Carlos Aguiar5, Genage André5, Enésima P Mendonça1, Sérvio Ribeiro6, Joaquín Hortal7, Ana M C Santos7, Luís Barcelos1, Henrik Enghoff8, Volker Mahnert9, Margarida T Pita10, Jordi Ribes11, Arturo Baz12, António B Sousa13, Virgílio Vieira14, Jörg Wunderlich15, Aristeidis Parmakelis16, Robert J Whittaker17, José Alberto Quartau5, Artur R M Serrano5, Kostas A Triantis16.
Abstract
BACKGROUND: In this contribution we present detailed distribution and abundance data for arthropod species identified during the BALA - Biodiversity of Arthropods from the Laurisilva of the Azores (1999-2004) and BALA2 projects (2010-2011) from 18 native forest fragments in seven of the nine Azorean islands (all excluding Graciosa and Corvo islands, which have no native forest left). NEW INFORMATION: Of the total 286 species identified, 81% were captured between 1999 and 2000, a period during which only 39% of all the samples were collected. On average, arthropod richness for each island increased by 10% during the time frame of these projects. The classes Arachnida, Chilopoda and Diplopoda represent the most remarkable cases of new island records, with more than 30% of the records being novelties. This study stresses the need to expand the approaches applied in these projects to other habitats in the Azores, and more importantly to other less surveyed taxonomic groups (e.g. Diptera and Hymenoptera). These steps are fundamental for getting a more accurate assessment of biodiversity in the archipelago.Entities:
Keywords: Azores; terrestrial arthropods; BALA project; laurissilva forest; Linnean; Wallacean and Prestonian shortfalls.
Year: 2016 PMID: 28174509 PMCID: PMC5267528 DOI: 10.3897/BDJ.4.e10948
Source DB: PubMed Journal: Biodivers Data J ISSN: 1314-2828
Figure 1.Location of the Azores and of native forest fragments in the archipelago. Codes for forest fragments as in Table 1.
Main characteristics of the Azorean islands (bold) and native forest fragments sampled from 1999 to 2011, including area (hectares), highest point (altitude in metres), distance to the nearest island/fragment (isolation in kilometres) and the oldest geological age of emerged substrate (million years BP) (adapted from Gaspar et al. 2008).
| Island | Fragment | Code | Area (ha) | Altitude (m) | Isolation (km) | Age (my) |
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| Morro Alto e Pico da Sé | MO | 1331 | 911 | 6.02 | 2.16 | |
| Caldeiras Funda e Rasa | FR | 240 | 773 | 6.02 | 2.16 | |
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| Caldeira do Faial | CA | 190 | 934 | 4.67 | 0.73 | |
| Cabeço do Fogo | CG | 36 | 597 | 4.67 | 0.60 | |
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| Mistério da Prainha | MP | 689 | 881 | 2.92 | 0.26 | |
| Caveiro | CA | 184 | 1077 | 4.61 | 0.27 | |
| Lagoa do Caiado | LC | 79 | 945 | 2.92 | 0.28 | |
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| Topo | TO | 220 | 946 | 15.13 | 0.55 | |
| Pico Pinheiro | PP | 73 | 717 | 15.13 | 0.55 | |
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| S. Bárbara e M. Negros | SB | 1347 | 1021 | 7.20 | 1.24 | |
| Biscoito da Ferraria | BF | 557 | 809 | 3.03 | 0.10 | |
| Guilherme Moniz | GM | 223 | 487 | 2.70 | 0.41 | |
| Terra Brava | TB | 180 | 726 | 2.70 | 0.10 | |
| Pico do Galhardo | PG | 38 | 655 | 2.79 | 0.10 | |
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| Pico da Vara | PV | 306 | 1105 | 3.42 | 3.20 | |
| Graminhais | GR | 15 | 930 | 4.02 | 3.20 | |
| Atalhada | AT | 10 | 500 | 3.42 | 4.01 |
Species richness for the Azores archipelago and each island. Total currently known species, the number of species surveyed during this study and those that represent new records are presented.
| Known species in the Azores | Pool of surveyed taxa | New | New records (%) | |
| AZORES | 2316 | 1215 | 26 | 2.13 |
| FLO | 797 | 461 | 55 | 11.93 |
| FAI | 945 | 537 | 51 | 9.49 |
| PIC | 808 | 463 | 46 | 9.93 |
| SJG | 620 | 359 | 76 | 21.17 |
| TER | 1224 | 731 | 52 | 7.11 |
| SMG | 1592 | 861 | 28 | 3.25 |
| SMR | 799 | 573 | 38 | 6.63 |
Figure 2.Frequency distribution of the number of new island records per species.
Total species and subspecies records for the Azores, new species and subspecies records during this study and increment for the most speciose classes and orders. Values for all islands are added, so richness may be up to 7 times higher than the archipelago's richness (as 7 islands were surveyed). (*)The families and were not considered (see text).
| Total records | New records | New Records (%) | |
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| Order | 19 | 5 | 26.32 |
| Order | 12 | 11 | 91.67 |
| Order | 331 | 108 | 32.63 |
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| Order | 18 | 8 | 44.44 |
| Order | 0 | 0 | 0.00 |
| Order | 44 | 12 | 27.77 |
| Order | 5 | 4 | 80.00 |
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| Order | 0 | 0 | 0.00 |
| Order | 7 | 0 | 0.00 |
| Order | 4 | 2 | 50.00 |
| Order | 10 | 7 | 70.00 |
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| Order | 13 | 4 | 30.77 |
| Order | 0 | 0 | 0.00 |
| Order | 6 | 0 | 0.00 |
| Order | 0 | 0 | 0.00 |
| Order | 7 | 3 | 42.86 |
| Order | 10 | 0 | 0.00 |
| Order | 0 | 0 | 0.00 |
| Order | 14 | 0 | 0.00 |
| Order | 75 | 40 | 53.33 |
| Order | 76 | 6 | 7.89 |
| Order | 290 | 82 | 28.28 |
| Order | 7 | 3 | 42.86 |
| Order | 361 | 36 | 9.97 |
| Order | 6 | 4 | 66.67 |
| Order | 147 | 11 | 7.84 |
Figure 3.Number of species per native forest fragments. Island codes as in Table 1
Figure 4.Species accumulation curve for the 286 species of arthropods collected in 152 pitfall and beating samples between 1999 and 2011. The solid line corresponds to the chronological sample sequence and the dotted line is a randomized curve (1000 runs). Samples to the left of the vertical line were collected in BALA1 and to the right in BALA2.
Figure 5.The ten most abundant species in the database. END - endemic from Azores; NAT - native non-endemic species; INTR - species introduced in the archipelago.
Figure 7.The opilion (Credit: Paulo A.V. Borges).
Figure 8.The moth (Credit: Paulo A.V. Borges)
Figure 9.The spider (Credit: Paulo A.V. Borges)