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Muñoz,Alejandra E; Simonetti,Javier A. |
Guanaco (Lamaguanicoe), the only native ungulate of Tierra del Fuego, uses the forests more extensively after the introduction of sheep. It is presumed that the regeneration of lenga (Nothofagus pumilio) is hampered by guanaco browsing. In this context, the diet of guanaco in Tierra del Fuego was evaluated through a microhistological analysis of feces in a livestock-free area dominated by lenga forest. Guanacos behaved largely as herbivorous grazers and exhibited seasonal variations in their grazing habits. Compared to other studies in Tierra del Fuego, which were conducted in areas where sheep and guanaco grazed together, we reported that the guanacos avoided and consumed fewer trees. These results have management implications, as the proper management of... |
Tipo: Journal article |
Palavras-chave: Lama guanicoe; Nothofagus pumilio; Feeding habits; Microhistological analysis. |
Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202013000100016 |
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Yagueddú,Cristina; Comparatore,Viviana; Paoletti,Gilda. |
The microhistological analysis quantifies the botanical composition of herbivore diets by the identification of the epidermal characters of ingested species. Many Papilionaceae form part of herbivore diets due to their high nutritive quality. Different species of this family are sometimes grouped together due to the difficulty to recognize them. In this study, the epidermis of Lotus tenuis, Medicago arabica, Medicago lupulina, Melilotus albus, Trifolium pratense and Trifolium repens was analysed. Also, it was tested if such descriptions could be useful to identify fragments of these species in hand-composed mixtures and then quantified by microanalysis. Descriptions and drawings are presented. Regressions were significant (p<0.05) for Lotus tenuis,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Epidermis; Microhistological analysis; Herbivore diet; Fabaceae; Leguminosae; Lotus; Medicago; Melilotus; Trifolium. |
Ano: 2009 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722009000200007 |
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