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Aspectos da biologia de Buenoa platycnemis (Fieber) (Insecta, Heteroptera, Notonectidae) da Restinga de Maricá, Rio de Janeiro Zoologia
Nessimian,Jorge Luiz; Ribeiro,José Ricardo Inácio.
A monthly quantitative study on B. platycnemis (Fieber, 1851) was carried out in a sand dune marsh, on the littoral of Rio Janeiro State. The aims of this study were to correlate the life cycle of the species with the seasonal regime of the water body, defining steps of the annual cycle, age strueture, and to indicate oviposition sites and trophic relations. The species shows a marked seasonal tendency. The major steps of the life cycle obtained were an invernal (weak) with a predominance of imagines, followed by another of population expansion, characterized by the absence of adults, massive eclosions and predominance of low instar nymphs. Probably, B. platycnemis has a sensibility to water levei variation and might be intluenced by the concentration of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Nepomorpha; Notonectidae; Buenoa platycnemis; Marsh; Restinga.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000100020
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History of the landscape of Obihiro city before modern development OAK
橋本, 靖; 佐藤, 雅俊; 赤坂, 卓美.
 自然環境や生物多様性保全の必要性への認識の高まりから,近年,人為的な緑地造成が行われる機会が増えている。その際,対象地本来の自然景観を参考にすることは,より目的に叶った緑地の造成につながりやすいと考えられる。そこで,帯広市周辺の本来の自然景観を推測するために,明治期の開拓以前の状況を,様々な文献を参考にして考察した。有名な江戸後期の十勝日誌等の記述からは,この地域に広い草原地帯があったことがうかがわれ,また,開拓期の様々な記録からも広い草原の存在が示された。また,黒ボク土の分布との関係からは,本地域での広い草原の存在と,野火の発生の歴史が想定された。このように,開拓前の帯広市周辺は,一面が原生的な森林に被われていたわけでなく,その平野部の広大な河川敷は,主に草原に被われていたものと推測された。そのため,帯広市の平野部において緑地の再生を考える際,森林環境だけではなく,湿性の草原や疎林のような環境も,再生するべき緑地景観の候補として,考えに入れる必要があると考えられる。
Palavras-chave: 帯広市; 開拓; 河川敷; 黒ボク土; 湿地; 森林; 草原; 十勝川; 氾濫原; 野火; Andosols; Floodplain; Grassland; Marsh; Obihiro city; Tokachi River; Wildfire.
Ano: 2017 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4558
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The survival and establishment potential of spores of Cyathea delgadii Sternb. in soils from Itirapina and Moji Guaçu (SP), Brazil Rev. Bras. Bot.
GUIMARÃES,THAIS DE BEAUCLAIR; FELIPPE,GIL M..
Germination of spores of Cyathea delgadii was carried out in soils collected in March 1997 (rainy season) at three depths (0-5, 5-10 and 10-15 cm) from the cerrado, open-cerrado, gallery forest and marsh at Moji Guaçu and cerradão, cerrado and gallery forest at Pedregulho, in Itirapina, both in the state of São Paulo, Brazil. Viability of spores mixed with soil and buried in the cerrado at the Reserva in Moji Guaçu were conducted for up to 10 months. The spores germinated in all soils. Germination in the soils was significantly lower than in distilled water. Germination was higher in soils from the gallery forest and cerrado than from open cerrado, cerradão and marsh. The germination was the same in the soil samples from the three depths of gallery forest,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fern spores; Soil storage; Cerrado; Gallery forest; Marsh.
Ano: 1999 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041999000300006
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