Carbon Isotopes of Riparian Forests Trees in the Savannas of the Volta Sub-Basin of Ghana Reveal Contrasting Responses to Climatic and Environmental Variations

Boakye, Emmanuel Amoah; Gebrekirstos, Aster; Hyppolite, Dibi N’da; Barnes, Victor Rex; Porembski, Stefan; Bräuning, Achim

doi:10.3390/f10030251

Cited by 6 publications

(4 citation statements)

References 51 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Comparatively, the dry season of the forest zone is more defined than the evergreen forest types. The mean annual rainfall ranges from 800 to 2800 mm/year and that of temperature is 26.4 °C in the forest zones [ 13 , 16 ].…”

Section: Methodsmentioning

confidence: 99%

Population Structure and Genomic Characterisation of the Ashanti Dwarf Pig of Ghana

Aryee,

Owusu-Adjei,

Osei-Amponsah

et al. 2024

Animals

View full text Add to dashboard Cite

There is still limited information on the genomic structure and genetic diversity of African pigs. Genetic diversity studies can contribute significantly to the genetic improvement and conservation of African pigs. This study presents a genetic diversity analysis and population structure of pig breeds in Ghana, with a focus on the Ashanti Dwarf pig (ADP), an indigenous pig breed of Ghana. A total of 167 pigs sampled in Ghana and populations consisting of Ashanti Dwarf pigs (n = 106), exotics (mostly European pigs) (n = 11), crosses (between indigenous and exotic breeds) (n = 44), and unknown breeds (nondescript) (n = 6) were genotyped using Porcine SNP60K BeadChip. Moderate heterozygosity levels, ranging from 0.28 for Ashanti Dwarf pigs to 0.31 for exotic pigs (mostly European pigs), were observed. Principal component analysis of the pig populations within Ghana resulted in two distinct clusters of pigs: (i) Northern and (ii) Southern regional clusters. The PCA based on breed also resulted in four clusters: (i) ADPs; (ii) exotics (iii) crossbreeds between ADP and exotics; (iv) unknown breed types. The PCA demonstrated that the clustering was influenced by genetics, geographical location, production systems, and practices. ADMIXTURE-based analysis also showed that the populations within Ghana are admixed. FST analysis revealed SNPs associated with QTLs for traits such as disease resilience and growth among ADP populations within the different regional and ecological zones of Ghana.

show abstract

Section: Methodsmentioning

confidence: 99%

Population Structure and Genomic Characterisation of the Ashanti Dwarf Pig of Ghana

Aryee,

Owusu-Adjei,

Osei-Amponsah

et al. 2024

Animals

View full text Add to dashboard Cite

show abstract

“…Dendrochronology, which uses tree rings as a tool of retrospective bioindication, allows users to obtain information on the growth rates of trees, past climate conditions, and the dynamics and carbon sequestration rates of natural forest stands (Gebrekirstos et al 2014). The carbon isotope composition of riparian trees can be used to reconstruct climate variability and assess ecological responses to climate change, as shown for the Volta Region of Ghana (Boakye et al 2019). The periodicity of tree growth ring formation in seasonally flooded peatlands in Borneo, Indonesia, was studied by Worbes et al (2017).…”

Section: Impacts Of Climate Change On Trees and Forest Ecosystemsmentioning

confidence: 99%

Adaptation to Climate Change with Forests, Trees and Agroforestry

Meubeck¹,

C.²,

Gitz³

2021

View full text Add to dashboard Cite

Ten years of forests, trees and agroforestry research in partnership for sustainable development About the FTA Highlights seriesThis publication is part of a series that highlights the main findings, results and achievements of the CGIAR Research Program on Forests, Trees and Agroforestry (FTA), from 2011 to 2021 (see full list of chapters on the last page).FTA, the world's largest research for development partnership on forests, trees and agroforestry, started in 2011. FTA gathers partners that work across a range of projects and initiatives, organized around a set of operational priorities. Such research was funded by multiple sources: CGIAR funders through program-level funding, and funders of bilateral projects attached to the programme, undertaken by one or several of its partners. Overall this represented an effort of about 850 million USD over a decade.The ambition of this series is, on each topic, to show the actual contributions of FTA to research and development challenges and solutions over a decade. It features the work undertaken as part of the FTA program, by the strategic partners of FTA (CIFOR-ICRAF, The Alliance of Bioversity and CIAT, CATIE, CIRAD, Tropenbos and INBAR) and/or with other international and national partners. Such work is presented indifferently in the text as work "from FTA" and/ or from the particular partner/organization that led it. Most of the references cited are from the FTA program.This series was elaborated under the leadership of the FTA Director, overall guidance of an Editorial Committee constituted by the Management Team of FTA, support from the FTA Senior Technical Advisor, and oversight of the FTA Independent Steering Committee whose independent members acted as peer-reviewers of all the volumes in the series.

show abstract

“…Although riparian forests are frequently studied in sub‐Saharan tropical Africa, much less information is available on their biogeography, particularly in mountain areas. Previous studies were conducted in South Africa (Hood & Naiman, 2000), Benin (Natta, 2003), Togo (Adjossou, 2004; Kokou et al, 2008), Central Africa (Gautier‐Hion & Brugiere, 2005), the Volta Sub‐Basin of Ghana (Boakye et al, 2019), Southern Sierra Leone (Fayiah et al, 2020), and South East Kenya (Habel & Ulrich, 2021) have shown that riparian areas are generally richer than other forest ecosystems. However, the floristic similarity between riparian and “Terre firme” forests has not been investigated to estimate the proportion of regional humid relict species in riparian forests, thus allowing the discussion of their status as forest refugia.…”

Section: Introductionmentioning

confidence: 99%

Floristic composition and turnover analysis in Dahomey Gap and the surrounding sub‐humid Togolese mountain minor forest refuges: Importance for biogeography and biodiversity conservation in sub‐Saharan Africa

Adjossou

Kokou

Deconchat

2022

Ecology and Evolution

View full text Add to dashboard Cite

The origin of Dahomey Gap (DG) flora is one of the central biogeographical questions in sub‐Saharan, which has been addressed in several studies. However, floristic evidence based on representative samples from the DG seems to be lacking in the scientific debate. The present study was conducted to fill this gap. Specifically, we assessed Togolese mountain riparian forests as minor forest refugia, examined their contribution to larger sub‐Saharan forest refugia, and discussed the significance of these findings for biogeography and biodiversity conservation. Southwest Togo, West Africa, and sub‐Saharan Upper Guinea Region Floristic data were collected in riparian forests through an intensive botanical inventory ( n = 198; 50 × 10 m 2 ). A comparative analysis was performed based on the floristic evidence related to forest refuges. The results showed significantly high species richness (868 species) and a high gamma and beta diversity associated with spatial turnover patterns. They also showed a high affinity between the study forests and large sub‐Saharan forest refugia. Riparian forests share about 60% of their current species richness with large sub‐Saharan forest refugia and contained refuge bio‐indicator species. The floristic evidence, consistent with those of other studies, suggests that Togolese mountains would have very ancient origins and have experienced paleoclimatic events. The studied riparian would have served as refuges during recurrent climatic episodes. Our results support the minimal forest fragmentation hypothesis (network of refugia along rivers). However, they seem to be incompatible with the idea that the DG flora may be essentially a relic of the early Holocene. In sub‐Saharan Africa, where maintaining a vast area of natural forest is difficult due to human pressure, efforts to preserve maximum species diversity should include a focus on the conservation of minor forest refuges, particularly in sub‐humid mountain riparian zone.

show abstract

Carbon Isotopes of Riparian Forests Trees in the Savannas of the Volta Sub-Basin of Ghana Reveal Contrasting Responses to Climatic and Environmental Variations

Cited by 6 publications

References 51 publications

Population Structure and Genomic Characterisation of the Ashanti Dwarf Pig of Ghana

Population Structure and Genomic Characterisation of the Ashanti Dwarf Pig of Ghana

Adaptation to Climate Change with Forests, Trees and Agroforestry

Floristic composition and turnover analysis in Dahomey Gap and the surrounding sub‐humid Togolese mountain minor forest refuges: Importance for biogeography and biodiversity conservation in sub‐Saharan Africa

Contact Info

Product

Resources

About