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A new method to simulate the hydrological state of soil under natural conditions. Repositório Alice
WILD, A.-K; MARX, M. T.; EISENBEIS, G..
Abstract ? Micro, macro and mesofauna in the soil often respond to fluctuating environmental conditions, resulting in changes of abundance and community structure. Effects of changing soil parameters are normally determined with samples taken in the field and brought to the laboratory, i.e. where natural environmental conditions may not apply. We devised a method (STAFD ? soil tubes for artificial flood and drought), which simulates the hydrological state of soil in situ using implanted cores. Control tubes were compared with treatment tubes in which floods of 15, 30, 60 and 90 days, and droughts of 60, 90 and 120 days were simulated in the field. Flooding and drought were found to reduce number of individuals in all soil faunal groups, but the response to...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: STAFD method; Climate change; Drought; Flooding; Soil invertebrates.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/handle/doc/660517
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Responses and adaptations of collembolan communities (Hexapoda: Collembola) to flooding and hypoxic conditions. Repositório Alice
MARX, M. T.; WILD, A.-K.; KNOLLMANN, U.; KAMP, G.; WEGENER, G.; EISENBEIS, G..
Abstract ? Standard ecological methods (pitfall traps, trunk eclectors and soil cores) were used to evaluate collembolan community responses to different flooding intensities. Three sites of a floodplain habitat near Mainz, Germany, with different flooding regimes were investigated. The structures of collembolan communities are markedly different depending on flooding intensity. Sites more affected by flooding are dominated by hygrophilic and hygrotolerant species, whereas the hardwood floodplain is dominated by mesophilic species. The survival strategies of the hygrophilic and hygrotolerant species include egg diapause and passive drifting. The physiological adaptations to hypoxic conditions of several collembolan species were analyzed using a...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Behavioral adaptation; Ecological adaptation; Egg diapause; Inundation; Morphological adaptation; Physiological adaptation.
Ano: 2009 URL: http://www.alice.cnptia.embrapa.br/handle/doc/660991
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