Quadri Anibaba | University of Jos (original) (raw)

Papers by Quadri Anibaba

Research paper thumbnail of Grassland cover declined in Southern Africa but increased in other African subcontinents in early 21st century

Research Square - Research Square, Nov 18, 2022

The African continent has the most extensive grassland cover in the world, providing valuable eco... more The African continent has the most extensive grassland cover in the world, providing valuable ecosystem services. African grasslands, like other continental grasslands, are prone to various anthropogenic disturbances and climate, and require data-driven monitoring for e cient functioning and service delivery. Yet, knowledge of how the African grassland cover has changed in the past years is lacking, especially at the subcontinents level, due to a lack of relevant long-term, Africa-wide observations and experiments. Here, we used Moderate Resolution Imaging Spectroradiometer (MODIS) Land Cover Type (MCD12Q1) data spanning 2001 to 2017 to conduct Land Use Land Cover (LULC) change analyses and map grassland distribution in Africa. Speci cally, we assessed the changes in grassland cover across and

Research paper thumbnail of Species Composition of Native and Introduced Plants Across Land-use Types in Central Nigeria

Research paper thumbnail of Predicted range shifts of invasive giant hogweed (Heracleum mantegazzianum) in Europe

Science of The Total Environment, 2022

Heracleum mantegazzianum Sommier & Levier (Giant hogweed) has spread across Europe after its ... more Heracleum mantegazzianum Sommier & Levier (Giant hogweed) has spread across Europe after its introduction as an ornamental from the native range in the Western Greater Caucasus. In addition to its invasive capability, H. mantegazzianum reduces the alpha diversity of native species in the non-native range and can cause second-degree burns when its phytotoxic sap contacts the skin upon exposure to sunlight. Previous studies on H. mantegazzianum distribution focused on individual countries, therefore we know little about the potential shift of the species distribution under changing climate at the continental scale. To fill that gap in the current knowledge, we aimed to (i) identify the most important climatic factors for the distribution of H. mantegazzianum in Europe, (ii) recognize areas that will be suitable and unsuitable for future climate scenarios to prioritize management action. Our study showed that the mean temperature of the coldest quarter (bio11) and temperature annual range (bio7) were the most important bioclimatic variables predicting the suitable habitat of the species in Europe. For all scenarios, we found that the majority of the range changes expected by 2100 will occur as early as 2041. We predicted an overall decrease in climatically suitable area for H. mantegazzianum under climate change with over three quarters (i.e. 94%) of the suitable area reduced under the Shared Socioeconomic Pathway (SSP) 585 - 2100. However, under the same scenario, climate conditions will likely favour the expansion (i.e. 20%) of H. mantegazzianum in northern Europe. The results from the present study will help in developing a climate change-integrated management strategy, most especially in northern Europe where range expansion is predicted.

Research paper thumbnail of Fifteen emerging challenges and opportunities for vegetation science ‐ A horizon scan by early career researchers

Journal of Vegetation Science

Research paper thumbnail of Land-Use Is More Important Predictor of Native Abundance and Diversity Than Invasive Tithonia Diversifolia - Evidence From a Tropical Savanna

Invasive alien species (IAS) and land-use represent major threats to native plant communities aro... more Invasive alien species (IAS) and land-use represent major threats to native plant communities around the globe. However, studies on IAS and potential ecological impacts in the context of land-use are limited in sub-Saharan Africa. Using a set of 45 plots in Jos metropolis in central Nigeria, we assessed the abundance of invasive Tithonia diversifolia (Hemls.) A. Gray, and its relationship with abundance and diversity of native plant species among land-use types. Abundance of T. diversifolia was the highest in farmland when compared to riparian and roadside land-use types. Also, the abundance and diversity of native species were lowest in farmland when compared to the roadside and riparian plant communities with increased T. diversifolia abundance. We showed that while T. diversifolia has low impact on native species, land-use type is an important predictor of native abundance and diversity. Although T. diversifolia has benefitted from the disturbances across land-use types, we found...

Research paper thumbnail of AIR POLLUTION TOLERANCE INDEX OF SOME TREE SPECIES AROUND ELECTRICITY GENERATING HOUSES IN AHMADU BELLO UNIVERSITY MAIN CAMPUS, ZARIA, NIGERIA

Nigerian Journal of Scientific Research, 2016

The study examined the Air Pollution Tolerance Index (APTI) of seven different tree species growi... more The study examined the Air Pollution Tolerance Index (APTI) of seven different tree species growing around electricity generating houses within the Ahmadu Bello University (ABU) Main campus, Samaru. Four parameters, leaf relative water content (RWC), ascorbic acid content (AA), total chlorophyll (TCH) and pH of leaf extract were used to compute the APTI of the tree species. Results indicate the order of tolerance showing Azadirachta indica (9.8) < Carica papaya (11.5) < Albizia lebbeck (14.9) < Senna siamea (17.0) <Mangifera indica (17.8) <Khaya senegalensis (19.5) < Termonalia collii (20.9). Terminalia collii, the most tolerant could act as a possible sink for air pollutants around pollution emitting sources. On the other hand, A. indica, the most sensitive of the studied species could serve as a possible indicator of air pollution.

Research paper thumbnail of Grassland cover declined in Southern Africa but increased in other African subcontinents in early 21st century

Research Square - Research Square, Nov 18, 2022

The African continent has the most extensive grassland cover in the world, providing valuable eco... more The African continent has the most extensive grassland cover in the world, providing valuable ecosystem services. African grasslands, like other continental grasslands, are prone to various anthropogenic disturbances and climate, and require data-driven monitoring for e cient functioning and service delivery. Yet, knowledge of how the African grassland cover has changed in the past years is lacking, especially at the subcontinents level, due to a lack of relevant long-term, Africa-wide observations and experiments. Here, we used Moderate Resolution Imaging Spectroradiometer (MODIS) Land Cover Type (MCD12Q1) data spanning 2001 to 2017 to conduct Land Use Land Cover (LULC) change analyses and map grassland distribution in Africa. Speci cally, we assessed the changes in grassland cover across and

Research paper thumbnail of Species Composition of Native and Introduced Plants Across Land-use Types in Central Nigeria

Research paper thumbnail of Predicted range shifts of invasive giant hogweed (Heracleum mantegazzianum) in Europe

Science of The Total Environment, 2022

Heracleum mantegazzianum Sommier & Levier (Giant hogweed) has spread across Europe after its ... more Heracleum mantegazzianum Sommier & Levier (Giant hogweed) has spread across Europe after its introduction as an ornamental from the native range in the Western Greater Caucasus. In addition to its invasive capability, H. mantegazzianum reduces the alpha diversity of native species in the non-native range and can cause second-degree burns when its phytotoxic sap contacts the skin upon exposure to sunlight. Previous studies on H. mantegazzianum distribution focused on individual countries, therefore we know little about the potential shift of the species distribution under changing climate at the continental scale. To fill that gap in the current knowledge, we aimed to (i) identify the most important climatic factors for the distribution of H. mantegazzianum in Europe, (ii) recognize areas that will be suitable and unsuitable for future climate scenarios to prioritize management action. Our study showed that the mean temperature of the coldest quarter (bio11) and temperature annual range (bio7) were the most important bioclimatic variables predicting the suitable habitat of the species in Europe. For all scenarios, we found that the majority of the range changes expected by 2100 will occur as early as 2041. We predicted an overall decrease in climatically suitable area for H. mantegazzianum under climate change with over three quarters (i.e. 94%) of the suitable area reduced under the Shared Socioeconomic Pathway (SSP) 585 - 2100. However, under the same scenario, climate conditions will likely favour the expansion (i.e. 20%) of H. mantegazzianum in northern Europe. The results from the present study will help in developing a climate change-integrated management strategy, most especially in northern Europe where range expansion is predicted.

Research paper thumbnail of Fifteen emerging challenges and opportunities for vegetation science ‐ A horizon scan by early career researchers

Journal of Vegetation Science

Research paper thumbnail of Land-Use Is More Important Predictor of Native Abundance and Diversity Than Invasive Tithonia Diversifolia - Evidence From a Tropical Savanna

Invasive alien species (IAS) and land-use represent major threats to native plant communities aro... more Invasive alien species (IAS) and land-use represent major threats to native plant communities around the globe. However, studies on IAS and potential ecological impacts in the context of land-use are limited in sub-Saharan Africa. Using a set of 45 plots in Jos metropolis in central Nigeria, we assessed the abundance of invasive Tithonia diversifolia (Hemls.) A. Gray, and its relationship with abundance and diversity of native plant species among land-use types. Abundance of T. diversifolia was the highest in farmland when compared to riparian and roadside land-use types. Also, the abundance and diversity of native species were lowest in farmland when compared to the roadside and riparian plant communities with increased T. diversifolia abundance. We showed that while T. diversifolia has low impact on native species, land-use type is an important predictor of native abundance and diversity. Although T. diversifolia has benefitted from the disturbances across land-use types, we found...

Research paper thumbnail of AIR POLLUTION TOLERANCE INDEX OF SOME TREE SPECIES AROUND ELECTRICITY GENERATING HOUSES IN AHMADU BELLO UNIVERSITY MAIN CAMPUS, ZARIA, NIGERIA

Nigerian Journal of Scientific Research, 2016

The study examined the Air Pollution Tolerance Index (APTI) of seven different tree species growi... more The study examined the Air Pollution Tolerance Index (APTI) of seven different tree species growing around electricity generating houses within the Ahmadu Bello University (ABU) Main campus, Samaru. Four parameters, leaf relative water content (RWC), ascorbic acid content (AA), total chlorophyll (TCH) and pH of leaf extract were used to compute the APTI of the tree species. Results indicate the order of tolerance showing Azadirachta indica (9.8) < Carica papaya (11.5) < Albizia lebbeck (14.9) < Senna siamea (17.0) <Mangifera indica (17.8) <Khaya senegalensis (19.5) < Termonalia collii (20.9). Terminalia collii, the most tolerant could act as a possible sink for air pollutants around pollution emitting sources. On the other hand, A. indica, the most sensitive of the studied species could serve as a possible indicator of air pollution.