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handle: 10261/58394
[ES] En el estudio de los efectos del cambio climático sobre la flora alpina tenemos en cuenta el pastoreo como factor ecológico. En las parcelas-piloto del Monte Perdido (Pirineo centran, entre 2200 y 3000 m, se anotaron las plantas comidas por los herbívoros, la presencia de excrementos y los rastros de pisoteo, entre otros datos. Así, cabras y ovejas pastan todo el verano y dejan muchos excrementos en la cima más baja (Acuta, 2242 m), ovejas y sarrios alcanzan la cima intermedia (Custodia, 2519 m) pero ya no llegan a las más altas (Tobacor, 2779 m) y Olas (3022 m). Los animales prefieren las orientaciones al S, más abrigadas y con mejor pasto, mientras que desdeñan las parcelas expuestas al N y E, sin duda más quebradas, frías y con escasas hierbas aprovechables.
[EN] When studying the effect of climatic change on the alpine flora, the grazing action ís an ecalagical factor to be cansidered. In the target regían of the Monte Perdido (Central Pyrenees, Spain), between 2200 and 3000 m of altitude, we noted on the permanent plots the grazed species, the presence of depositions, the trampling effects and so on. Goats and sheep overgrazed and left many excrements at Punta Acuta (2242 m); sheep and chamois grazed not so strongly on Custodia peak (2519 m); and no herbivors reached the two highest peaks (Tobacor, 2779 m) and Olas (3022 m). Grazing animals clearly chozen S slopes, as the correspondent pastures were better and they are sheltered. On the contrary, N and E aspects were colder, steeper, and also without prafitable herbs.
Peer reviewed
7 páginas.
Pirineo central, High mountain level, Alta montaña, Alpine pastures, Central Pyrenees, Pastos alpinos
Pirineo central, High mountain level, Alta montaña, Alpine pastures, Central Pyrenees, Pastos alpinos
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