First records for the mesocavernous shallow stratum (M.S.S.) from the Azores.

Borges, Paulo A. V.

http://hdl.handle.net/10400.3/1855

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Authors

Borges, Paulo A. V.

Abstract(s)

During a pitfall survey accomplished in the Azores by the author in 1989, 1990 and 1991 (see BORGES, 1992a and in prep.), the mesocavernous shallow stratum - M.S.S. ["Milieu Souterrain Superficiel" sensu JUBERTHIE (1983)] was investigated. The field work in St. Maria was done during the Zoological Expedition of the University of Azores (Department of Biology) between 11th and 19th June 1990. The presence of the M.S.S. in volcanic islands was only previously described from the Canary Islands (see MEDINA, 1991), also belonging to the same biogeographical region of the Azores, the Macaronesia. The existence of this habitat (in that time named "Superficial Underground Compartment") in the Canary islands was first cited by OROMÍ et aI., only in 1986. The first record of a troglobite from the Azorean M.S.S. was made by BORGES and OROMÍ (1991), refering the presence of the ground-beetle "Trechus terceiranus" Machado in this habitat of Terceira Island. The goal of the current work is to present a preliminary overview on the occurrence of the mesocavernous shallow stratum (sensu ASHMOLE et al, 1990) in two Azorean islands, the geologically young island of Terceira (0.30 m.y.) (FERAUD et al., 1980) and the oldest island of the archipelago, S. Maria (8.12 m.y.) (ABDEL-MONEM et al., 1975).

Description

Keywords

Milieu Souterrain Superficiel (MSS) Superficial Underground Compartment Ground Beetle Trechus terceiranus Machado Azores

URI

http://hdl.handle.net/10400.3/1855

Citation

Borges, P.A.V. (1993). "First records for the mesocavernous shallow stratum (M.S.S.) from the Azores". «Mémoires de Biospéleologie», 20: 49-54. ISSN 0184-0266.