Diversity of macrophytes in relation to environmental conditions in wetlands along the lower part of the Gilgel Abay River catchment in Ethiopia

Getnet, Habtamu; Mengistou, Seyoum; Warkineh, Bikila

doi:10.2989/16085914.2020.1842721

Cited by 6 publications

(2 citation statements)

References 30 publications

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“…However, a profound understanding of the effects of human disturbance on aquatic plant species richness and community composition is critical for the development of an effective management plan that aims to conserve and restore wetlands in the Lake Tana region. Despite this, the aquatic plants are the least studied and understood component of wetland biodiversity in the Lake Tana region, except for a few studies dealing with macrophyte species richness and abundance in relation to physicochemical characteristics in the southwestern littoral zone of the lake (Getnet et al, 2021 andKassa et al, 2021).…”

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confidence: 99%

The effect of human disturbance on the community composition and diversity of aquatic plants in the tropical wetlands of Lake Tana, Ethiopia

Kahsay

Stiers

Wondie

et al. 2022

Preprint

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The aquatic plants in wetlands have been threatened by increasing human disturbances in recent decades. The present study investigates to what extent human disturbance affects the community composition and richness of aquatic plants in 3 different wetland types in Lake Tana, Ethiopia. We selected twelve wetlands representing 3 different wetland types (four lacustrine, four river mouth, and four riverine papyrus wetlands) and collected data on aquatic plant species richness and community composition, major local environmental variables, and the degree of human disturbance at multiple plots along three transects in each wetland during the dry and wet season of 2018. The unique and shared contributions of human disturbance, local environmental variables, and wetland type on variations in community compositions of aquatic plants in wetlands were investigated using variation partitioning analyses. The Overlap and Decreasing Fill (NODF) metric was used to estimate the nestedness in aquatic plant communities. A total of 113 aquatic plant species, belonging to 38 families, were identified across all wetlands during the dry and wet season. Wetland types explained the greatest proportion of variation in community composition, followed by human disturbance and local environmental variables. The species richness was negatively correlated with the overall degree of human disturbance, while NODF was positively correlated. Irrespective of the degree of human disturbance, papyrus swamps had systematically the highest species richness and supported clearly different plant communities, therefore conservation efforts should focus on these habitats. In addition, measures should be taken to restore the highly disturbed and species-poor river mouth wetlands.

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Section: )mentioning

confidence: 99%

The effect of human disturbance on the community composition and diversity of aquatic plants in the tropical wetlands of Lake Tana, Ethiopia

Kahsay

Stiers

Wondie

et al. 2022

Preprint

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“…Kassa et al [24] have reported on wetlands of Lake Tana and their macrophyte composition and Dida [25] on the oristic composition of wetland in Wonchi District, South Western Shewa. Recently, Wosnie et al, [26] and Getnet et al, [27] reported on the macrophytes of Lake Koka and the Gilgel Abay catchment, respectively. Rivers have been less investigated than lakes with regard to macrophytes.…”

Section: Introductionmentioning

confidence: 99%

Distribution and Diversity of Macrophytes in Relation to Some Physico-Chemical Factors in the Ketar River, Ziway Catchment, Ethiopia

Chibsa

Mengistou

Kifle

2021

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Distribution and diversity of macrophytes in relation to some physico-chemical factors in the Ketar River were studied from December, 2017 to November, 2018. Physico-chemical parameters and macrophytes were collected from three stations along the river for eight months. Onsite measurements and laboratory work of physico-chemical was analyzed as recommended by APHA [31]. Macrophytes were collected manually using belt transect method. Except for pH and surface water temperatures, all the physico-chemical parameters measured showed no significant difference spatially. During the study period, sixteen macrophyte species belonged to fourteen families were identified. Among the identified macrophyte, 11 of them were emergent, while 3 were rooted with floating leaves and 2 free-floating. Free-floating macrophytes were shared the highest abundance followed by emergent. This research observed that the site (site 3) that was exposed to minimal human impact was rich in diversity and abundance of macrophytes. All the sites were dominated by emergent macrophytes that attained the highest relative frequency followed by rooted emergent species. Azolla nilotica and Pistia stratiotes were shared the highest abundance and were the dominant macrophyte with the relative frequency of 7.24% and density of 40.91%, and 7.93% and 26.54%, respectively. Under a favorable environment, nutrient loading from nearby creates more favorable conditions for the infestation of the invasive species (A. nilotica and P. stratiotes) to flourish and out-compete the other species of macrophyte. Therefore, anthropogenic activities that enhance nutrient addition to the River should be regulated.

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Extent of Lake Tana’s Papyrus Swamps (1985–2020), North Ethiopia

et al. 2022

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Diversity of macrophytes in relation to environmental conditions in wetlands along the lower part of the Gilgel Abay River catchment in Ethiopia

Cited by 6 publications

References 30 publications

The effect of human disturbance on the community composition and diversity of aquatic plants in the tropical wetlands of Lake Tana, Ethiopia

The effect of human disturbance on the community composition and diversity of aquatic plants in the tropical wetlands of Lake Tana, Ethiopia

Distribution and Diversity of Macrophytes in Relation to Some Physico-Chemical Factors in the Ketar River, Ziway Catchment, Ethiopia

Extent of Lake Tana’s Papyrus Swamps (1985–2020), North Ethiopia

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