Bird species richness in tropical Africa: Some comparisons

Pomeroy, Derek; Lewis, Adrian

doi:10.1016/0006-3207(87)90010-3

Cited by 14 publications

(11 citation statements)

References 16 publications

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“…The overall radiation of the Plucheinae describes a south to east (DISC), or south‐west to north‐east (RRW) route tracing an arid corridor since long recognized to be of large importance to the diversity of several groups of organisms (e.g. Balinsky, ; de Winter, ; Pomeroy, ; Poynton, ; Jürgens, ), with increased aridity reaching East Africa at c . 3 Ma (Senut et al ., ).…”

Section: Discussionmentioning

confidence: 99%

From the Namib around the world: biogeography of the Inuleae–Plucheinae (Asteraceae)

Nylinder

Razafimandimbison

Anderberg

2016

Journal of Biogeography

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Aim We investigated the historical biogeography of the Inuleae-Plucheinae (Asteraceae), a group of arid-adapted plants with partly unresolved generic circumscriptions, in order to understand its origin and spatiotemporal evolutionary history in relation to the Cenozoic climate shifts.Location Global, with highest species diversity in the Southern Hemisphere.Methods The spatiotemporal biogeography of the Plucheinae was estimated by both a discrete method using a set of general distribution areas, and a relaxed random walk based on extant species distributions. The topology was time calibrated using a combination of secondary node ages and secondary derived rates for included loci.Results Our results indicate the median age of the Plucheinae to be approximately 15.4 Ma. The biogeographical analyses infer an ancestral origin in southern Africa, with the relaxed random walk analysis narrowing the uncertainty down to an area reaching from coastal Namibia to the western Kalahari. Africa was colonized in a (south)western-(north)eastern direction following the spread of arid habitats. Ancestral representatives of the Plucheinae colonized South America on at least three separate occasions (13.0-4.0, 4.3-3.1 and 4.1-3.7 Ma), with one subsequent spread to North America. Australia was colonized three times between 3.6 and 0.4 Ma. Madagascar and the Mascarenes were colonized at least seven times.Main conclusions The origin of the Plucheinae is estimated to the Namib region, with early speciations and radiations concurring with the timing of aridification of southern Africa, following the increase in strength of the Antarctic Circumpolar Current and subsequent formation of the Benguela Upwelling at c. 11.8 Ma. The current biogeographical distribution of the Plucheinae is best explained by several Neogene long-distance dispersal events from tropical Africa.

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Section: Discussionmentioning

confidence: 99%

From the Namib around the world: biogeography of the Inuleae–Plucheinae (Asteraceae)

Nylinder

Razafimandimbison

Anderberg

2016

Journal of Biogeography

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“…Apart from these major similarities, we also highlighted some (relatively minor) differences: (a) number of Overall, the wide similarities in the patterns observed for both rodents and insectivores suggest that species richness is similarly influenced by macro-environmental and climatic factors, which means that both groups respond in a similar way to the ecological conditions available all throughout Africa. In particular, rainfall was for sure a main factor positively were also showed to be important correlates of species richness in other groups of organisms in Africa, including e.g., amphibians (Behangana and Luiselli 2009), turtles (Iverson 1992a), and birds (Pomeroy and Lewis 1987). Obviously, also the fact that Middle Africa was reacher than Northern Africa in terms of species richness is well demonstrated in many other organisms (Iverson 1992b(Iverson , 1992cVié et al 2009), hence not meriting further discussion.…”

Section: Discussionmentioning

confidence: 92%

Country-based patterns of total species richness, endemicity, and threatened species richness in African rodents and insectivores

et al. 2011

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Country-based patterns of total species richness, endemicity, and threatened species richness in African rodents and insectivores are studied in this paper. We found several patterns which were similar between insectivores and rodents. Indeed, in both groups we observed: (i) a significantly uneven distribution of species richness across countries and geographic regions with highest species richness peaks being in Middle Africa and lowest peaks in Northern Africa, (ii) species richness increasing with rainfall but being independent on a country's surface area, (iii) in each country, the insectivore total species richness and endemic species richness increases were positively correlated with rodent total species richness and endemic species richness increases. However, number of endemics peaked in South Africa and D.R. Congo in both groups, but also in Tanzania for Insectivores and in Ethiopia for rodents. In addition, the highest numbers of threatened species occurred in D.R. Congo, Rwanda and Uganda for rodents and in South Africa, Tanzania and Cameroon for insectivores. The conservation implications of these results were discussed

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“…These in turn support a rich diversity of birds, almost all of them breeding in the forest [11]. On the contrary, whilst semiarid woodlands may support as many species of birds as a forest, far fewer of them breed in any particular woodland so the overall diversity of species is lower in Savannah woodland [12].…”

Section: Discussionmentioning

confidence: 99%

“…Consequently, most bird species have well-defined distributions [11]. The Kenyan avifauna is one of the richest in Africa [12]. The importance of conserving Kenyan birds is emphasized by the fact that bird watching is an important component of African tourism [13].…”

Section: Introductionmentioning

confidence: 99%

Understanding the Relationship Between Environmental Energy Availability and Bird Species Richness in Kenya Using Remote Sensing and Ancillary Data

Oindo¹

2008

TORMSJ

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Abstract:The energy hypothesis predicts that, in regions of roughly equal area, energy flux per unit of area should be the prime determinant of species richness. In the case of plants, primary production represents realized energy capture. Potential evapotranspiration is a measure of community energy use and it is related to terrestrial primary productivity. The best correlate of the latter on regional scale is the Advanced Very High Resolution Radiometer (AVHRR) derived Normalized Difference Vegetation Index (NDVI). I examined the relationship between bird species richness and measures of available environmental energy (interannual maximum average NDVI and mean annual potential evapotranspiration) at a quarter degree scale (55 x 55 km). Statistical analyses revealed higher interannual maximum average NDVI results in higher bird species richness, whereas mean annual potential evapotranspiration correlated negatively with species richness. Understanding these relationships can help in estimating changes in bird species richness in response to global climatic change.

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Bird species richness in tropical Africa: Some comparisons

Cited by 14 publications

References 16 publications

From the Namib around the world: biogeography of the Inuleae–Plucheinae (Asteraceae)

From the Namib around the world: biogeography of the Inuleae–Plucheinae (Asteraceae)

Country-based patterns of total species richness, endemicity, and threatened species richness in African rodents and insectivores

Understanding the Relationship Between Environmental Energy Availability and Bird Species Richness in Kenya Using Remote Sensing and Ancillary Data

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