Dynamic Relation of Hydrology-Soils-Vegetation Effect On Uca formosensis In San-Sun Wetland
Date Issued
2007
Date
2007
Author(s)
WU, I-HUI
DOI
zh-TW
Abstract
Abundance, biomass and population structure of three fiddler crabs（Uca lactea, U. arcuata and U. formosensis） vary in San-Sun where presents salt marsh. The first two species are conspicuous and ubiquitous. Uca lactea inhabits sandy shore and U. arcuata dwells muddy one of the mangrove forest above the high water level of the neap tide. They are co-habitat with Uca formosensis which is endemic to Taiwan. The recently researches already indicate that U. formosensis prefers muddy shore. This study investigates their microhabitats and figures out in depth that the soil textures of U. formosensis’ are Loam and Sandy loam (Sand 45.5 %±8.5 % and Silt 36.4 % ±6.5 %) in the upper tidal zone without mangrove. High values of soil organic carbon and vegetation would lead to negative one of oxygen reduction potential which doesn’t suit Uca formosensis. In U. formosensis’ habitat, soil organic carbon is 0.45 % ±0.10 % and the value of soil 2nd-ORP is -22 ± 7 mv which refers reduction level. To sum up, the important strategy to conserve U. formosensis is creating a habitat with more sand, less clay and zero vegetation.
Subjects
香山濕地
土壤氧化還原電位
土壤粒
徑
Uca formosensis
Salt marsh
Soil-ORP
Soil texture
SDGs
Type
thesis
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