CAMPOS DE ALTITUDE NA SERRA DO MAR PARANAENSE: ASPECTOS FLORÍSTICOS
CAMPOS DE ALTITUDE NA SERRA DO MAR PARANAENSE: ASPECTOS FLORÍSTICOS
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坎波斯德海拔 NA SERRA DO MAR PARANAENSE：ASPECTOS FLORÍSTICOS
DOI：
10.5380/rf.v38i4.13158
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发表时间：
2008
影响因子：
2.5
通讯作者：
M. B. Scheer
中科院分区：
文献类型：
--
作者：
Alan Yukio Mocochinski;M. B. Scheer
巴西南部Serra do MarMountain上的高海拔草原：植物区系。对巴拉那州“Serra do Mar”高海拔草原(坎波斯海拔)的植物区系进行了研究。在6个调查区共检测到280种维管束植物。它们隶属于73个植物科，其中被子植物63种(260种)，蕨类植物8种(18种)，裸子植物2种。菊科种类最多，有44种，占总数的15.7%，其次是禾本科31种，占11%，野牡丹科17种，占6%，莎草科16种，占5.7%。Serra do Ibitiraquire是“坎波斯海拔”面积最大、物种丰富程度最高的地区(224种)。Serra da Pedra Branca do AraraQuara的物种数量最少(71种)，可能是因为草原面积最小。只有17种(6%)在6个采样点上发现，137种(49%)在一个采样点上发现。高海拔草原区系相似性与地理距离呈中度负相关。生物污染(主要是松树)、人类在山地环境和通讯设施中的不当行为是对巴拉那高海拔草原的最大威胁。
High-altitude grasslands (campos de altitude) on the Serra do MarMountain in Southern Brazil: floristic aspects. The floristic of high-altitude grasslands (campos de altitude) of the “Serra do Mar” in the state of Parana was studied. In a total of six investigated areas, 280 vascular species were detected. They belong to 73 botanic families, in which 63 are angiosperms (260 species), 8 are pteridophytes (18 species) and 2 are gymnosperms. Asteraceae was the richest family, with 44 species (15.7% of the total), followed by Poaceae (31; 11%), Melastomataceae (17; 6%) and Cyperaceae (16; 5.7%). The Serra do Ibitiraquire presents the largest area of “campos de altitude” and the highest richness of species (224 species). Serra da Pedra Branca do Araraquara presents the lowest number of species (71 species) probably due to the smallest grassland area. Only 17 species (6%) were found on the six sites and 137 species (49%) were detected on just one site. A moderate negative correlation was observed between floristic similarity and the geographic distance among the high-altitude grassland areas. The biological contamination (mostly by Pinus sp.), the human inadequate behavior in mountain environments and telecommunication facilities are the most important threats to the highaltitude grassland in Parana.