表一、海生所 103 學年專題討論(二) 摘要表
IMB 103 Seminar (II) Abstract form
報告日期/Date：2015 年/year 04 月/month
08 日/day
班別/學生姓名：碩二 / 邱靜詠
Class/Name:
題目Title：Ecological Health Status of the Fosu Lagoon, Southern Ghana I:
Biotic Assessment
作者 Author(s): Frederick A. Armah *, Isaac Luginaah2, Paul K. Essandoh1
and Ernest K.A. Afrifa1
期刊Journal name: J Ecosyst Ecogr ISSN:2157-7625
期頁數 Issue and page nos: Volume 2 .Issue 2 .page 1-9
摘要 Abstract:
A comparative analysis of the benthic macroinvertebrate communities in the
Fosu and Benya Lagoons in Ghana was conducted in this study. Salinity,
oxygen, temperature, conductivity, turbidity and pH were measured, along with
invertebrate richness and species densities. AZTI Marine Biotic Index (AMBI)
and multivariate statistics were used to determine the different responses to
pollution in five ecological groups: disturbance-sensitive species; disturbance
indifferent species, disturbance-tolerant species, second-order opportunistic
species; and first-order opportunistic species. The Fosu Lagoon supported more
pollution tolerant species, whereas the Benya Lagoon had more species that
were sensitive to organic enrichment under relatively unpolluted conditions. In
the Fosu Lagoon, Chironomus sp., which is adapted to virtually anoxic
conditions, was more diverse. The total species richness of all taxa was 1359
and the % abundance of the Chironomus sp. was 92.35%. In the Benya
Lagoon, the total species richness of all taxa was 2459, and distributed among
34 taxa. The % abundance of Nemertea sp. was 87.52%. Expectedly, the level
of dissolved oxygen in the less saline Fosu Lagoon was higher than in the more
saline Benya Lagoon. We hypothesized that reduced photoperiod and
photosynthetic activities of aquatic plants account for this trend. This study
suggests the need to implement comprehensive monitoring and management
initiatives for sustaining the ecological health of these coastal lagoons in
Ghana, in order to support the livelihoods of the surrounding local
communities.