Caves and Cave Life. Philip Chapman
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Название: Caves and Cave Life
Автор: Philip Chapman
Издательство: HarperCollins
Жанр: Биология
Серия: Collins New Naturalist Library
isbn: 9780007403974
isbn:
Evidence that early man was conscious of the existence of a subterranean fauna dates back to a remarkable engraving of a cave cricket on a bison bone discovered by Count Begouen while excavating in the Grotte des Trois Frères in the French Pyrenees. The carving is believed to be 18,000 years old, yet is sufficiently clear and detailed for the subject to be recognizeable as a Troglophilus species, which today is distributed from Italy to Asia Minor, but no longer inhabits France.
For the next surviving reference to cave life in Europe, we must move on to the 16th century and the observant Count Trissino, who, in a letter dated 5th March 1537, recorded what must have been a form of the cave-limited amphipod, Niphargus. He noted that at the far end of the Covolo di Costozza in northern Italy there was a deep pool of clear water. “In this water no fish of any kind are found, except for some tiny shrimp-like creatures similar to the marine shrimps that are sold in Venice.”
Fig. 1.7 A prehistoric engraving on a bison bone, discovered by Count Bégouen in the Grotte des Trois Frères (French Pyrenees), featuring the cave cricket Troglophilus. (After Bégouen)
The Slovenian Olm, Proteus, seems to have been well-known to the villagers of the Trieste area for centuries. Specimens occasionally appeared after floods in the Lintverm (from the German ‘Lindvurm’, meaning ‘dragon’) – a tributary of the River Bela near Vrihnika. With their long, pink, rather reptilian bodies, they were taken, not unreasonably, to be dragon fry – the offspring of a shadowy monster who lived in the roaring cave from which the river flowed and who caused periodic floods by opening sluice gates when her living quarters were threatened by rising water. But in the 1680s, Baron Johann Valvasor, a Slovene nobleman and well-travelled amateur scientist, ruined centuries of colourful legend by exposing the Olm as a perfectly natural blind cave salamander.
In 1799, the German naturalist-explorer Baron Alexander von Humboldt, accompanied by a French botanist called Bonpland, visited the famous Cueva del Guacharo in the Caripe Valley of Venezuela. There he collected and described a cavernicolous bird, Steatornis caripensis, belonging to the order which includes the nightjars, which had been known for a long time to the Indians under the name ‘guacharo’. Humboldt was greatly impressed by the screeches produced by the birds when disturbed at their cave roost. “Their shrill and piercing cries strike upon the rocky vaults,” he wrote, “and are repeated by the subterranean echoes.” Having heard them myself, I would describe the racket as the sound of a thousand mad chickens locked up in a barn with a fox.
In 1808, Schreibers discovered the first invertebrate cave fauna in Austria and more extensive collecting was done in the Postojna area by Count Franz von Hohenwart and others from 1831 onwards. It was there too that the Danish zoologist J.C. Schiodte recognized that cave faunas showed differing degrees of specialization to life in darkness, and so laid the foundations for a system of ecological classification of cave life. This was advanced in a more rigorous form in 1854 by J.R. Schiner and has been widely used by cave biologists ever since. This work perhaps marked the beginnings of the systematic discipline of ‘biospȼologie’, a term proposed by Armand Viré in 1904, to refer to the study of subterranean life.
Fig. 1.8 The old route across the underground river Pivka in the Great Hall of Postojna Jama in Slovenia from an aquatint engraved by G. Dobler after a painting by Alois Schaffenrath, published in 1830. (Courtesy of Trevor Shaw)
In the USA important work continued intermittently from 1840. In that year Davidson collected the first specimens of a blind white fish in Mammoth Cave, described by de Kay, Wyman and Tellkampf as Amblyopsis spelaea. Tellkampf went on to describe other fauna from Mammoth Cave and was followed by E.D. Cope and A.S. Packard, whose remarkable studies through the 1870s put America for a time at the forefront of biospeleological research. Meanwhile, in the 1840s, V. Motschoulsky reported the first cave-specialized insects captured in the caves of Caucasia, and in 1857 De la Rouzee discovered the first cavernicolous insects known from France.
Scientific investigation of our cave faunas began in a round-about way in about 1852, when Professor Westwood and S. Bate included the following reference in their History of the British Sessile-eyed Crustacea, Vol.1, published in 1863.
“In the year 1852”, writes Bate, “Professor Westwood was so fortunate as to obtain from a pump-well near Maidenhead, a quantity of [Niphargus sp.] … since when they have been found in Hampshire, Wiltshire … and very recently in Dublin.”
Shortly afterwards, news of the discovery in Europe and America of strange blind cave animals prompted Naturalists E. Percival Wright and A.H. Haliday to search for similar creatures in Mitchelstown New Cave in Co. Tipperary. Their search was successful and they described their find – a tiny Collembolan doubtfully identified as Lipura stillicidii Schiodte – in a paper read before a British Association Meeting in Dublin in 1857.
More than thirty years were to elapse before the next glimmer of enthusiasm for Irish cave life manifested itself in the form of a joint excursion in 1894 by the Dublin, Cork and Limerick Field Clubs to the Cave of Mitchelstown. One of the participants, George H. Carpenter, recorded that “after an informal luncheon on the roadside, the party being provided with candles, descended the sloping passage and ladder which led to the depths below.” They spent two hours searching for cave animals and, although they failed to reach the underground river, made a reasonable collection of fauna, including the rare blind cave spider now known as Porrhomma rosenhaueri. In the same year, pioneering English arachnologist F.O.P. Cambridge collected spiders in Wookey Hole, but without finding anything of particular interest.
Early in 1895 E.A. Martel and his wife paid a well-publicised visit to Ireland. The event prompted the Fauna and Flora Committee of the Royal Irish Academy to support H.L. Jameson with a grant “to further investigate cave fauna in Ireland”. He joined the Martels in the Enniskillen area of Co. Fermanagh and, while the Frenchman surveyed the caves and drew up his plans, Jameson collected cave animals. The interest seems to have persisted, for Jameson is also known to have made faunal collections in Speedwell Mine in Derbyshire in 1901, but there then followed a gap of over thirty years during which British cave fauna was again neglected.
Fig. 1.9 One of the earliest illustrations of cave fauna from Adolf Schmidl’s Die Grotten und Höhlen von Adelsberg, Lueg, Planina und Laas. Wien, Braumüller, 1854. (Courtesy Trevor Shaw)
In 1936 the British Speleological Association was launched, with a brief to co-ordinate the work of caving clubs and to foster interest in the scientific aspects of caving. Things did not run entirely smoothly, however, and in 1947 another body, the Cave Research Group of Great Britain, emerged with a more specific research interest. Both societies ran in parallel until 1973 when they merged to form the British Cave Research Association which has become a major publisher of speleological research.
Meanwhile another organization concerned with cave science had been formed in 1962. This was the Association of the Pengelly Cave Research Centre, now the William Pengelly Cave Studies Trust. It is London-based, but its interests are very much centred in Devon where it runs the Pengelly СКАЧАТЬ