1984
DOI: 10.11606/issn.2526-3358.bolzoo.1984.122116
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Aspectos ecológicos da saúva no cerrado: a saúva, as queimadas e sua possível relação na ciclagem de nutrientes minerais

Abstract: O presente trabalho procura analisar comparativamente os efeitos das queimadas e das saúvas na ciclagem dos nutrientes minerais em ecossistemas de cerrado. Sugere-se uma possível relação antagônica entre eles, tanto do ponto de vista temporal quanto espacial.

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Cited by 23 publications
(37 citation statements)
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“…Benth., Leguminosae (Ferri 1944). Thick cuticles, sclerophyly and other peculiar features of the woody species of cerrado have been assigned to the effect of the acid and nutrient deficient soils of the cerrado, in many cases combined with the effects of periodic fires (Coutinho 1983, Salatino 1993. It has been speculated that the frequent prevalence of triterpenoids in the foliar waxes of cerrado plants may be a feature selected for its value as protection against the pressure of biotic agents (insect herbivory, for example) rather than as anti-transpiring agents (Salatino et al 1998, Oliveira andSalatino 2000).…”
Section: Ecological Considerationsmentioning
confidence: 99%
See 1 more Smart Citation
“…Benth., Leguminosae (Ferri 1944). Thick cuticles, sclerophyly and other peculiar features of the woody species of cerrado have been assigned to the effect of the acid and nutrient deficient soils of the cerrado, in many cases combined with the effects of periodic fires (Coutinho 1983, Salatino 1993. It has been speculated that the frequent prevalence of triterpenoids in the foliar waxes of cerrado plants may be a feature selected for its value as protection against the pressure of biotic agents (insect herbivory, for example) rather than as anti-transpiring agents (Salatino et al 1998, Oliveira andSalatino 2000).…”
Section: Ecological Considerationsmentioning
confidence: 99%
“…Annual rainfall in cerrados may come up to 2,000 mm (Sampaio 1995). The typical woody cer-rado vegetation is xeromorphic and the physiognomy of the ecosystem, in many areas, depends on the occurrence of periodic fires, in the absence of which a savanna community may turn out a dry forest (Coutinho 1983). It has been assumed that cerrado xeromorphism is not associated with hydric conditions, but rather that it is a consequence of a chronic low availability of edaphic mineral nutrients (Arens 1958a, b) and aluminum toxicity (Goodland 1971).…”
Section: Introductionmentioning
confidence: 99%
“…Devido a essa alta diversidade e biomassa, as formigas desempenham papéis importantes na dinâmica de muitos ecossistemas como dispersão (Dalling & Wirth 1998, Leal & Oliveira 1998, Leal 2003a) e predação de sementes (Levey & Byrne 1993, Moutinho et al 1993, ciclagem de nutrientes (Coutinho 1984, Farji-Brener & Silva 1995 e herbivoria (Wirth et al 2003). Além disso, as formigas interagem diretamente com uma série de organismos.…”
unclassified
“…A maior parte da terra que removem é depositada na superfície do terreno, onde se forma, então, o murundu (COUTINHO, 1984). Esse solo escavado de câmaras e túneis subterrâneos é trazido à superfície pelas formigas operárias, apresentando distúrbio substancial no seu perfil (CHERRETT, 1989b (ALVAREDO et al, 1981), porosidade (ALVAREDO et al, 1981), umidade (MOUTINHO, 1998, teor de matéria orgânica (HAINES, 1978;ALVAREDO et al, 1981) e de nutrientes HORVITZ;SCHEMSKE, 1986;SILVA, 1995ab).…”
Section: Introductionunclassified
“…A importância das saúvas na ciclagem de nutrientes no bioma Cerrado já foi discutida por Coutinho (1984), o qual ressaltou a influência na transferência de nutrientes do estrato herbáceo-subarbustivo para o arbustivo-arbóreo devido à remineralização do lixo dos sauveiros. Essa característica torna-se ainda mais importante em ecossistemas com solos distróficos, principalmente nas savanas da América do Sul (FARJI-BRENER; SILVA, 1995b).…”
Section: Introductionunclassified