Important Bird Areas in Kenya

Bennun, Leon; Njoroge, Peter

doi:10.1080/00306525.2000.9639900

Cited by 80 publications

(97 citation statements)

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“…Detection probabilities for forest and farmland indicate that this comparison is valid and not influenced by birds being more difficult to locate in dense forest. Altogether, 194 forestdependent species are cited for Kakamega forest (Bennun and Njoroge 1999), of which we documented only 11% in the farmland. Waltert et al (2005) also observed a marked change in bird community composition from intact forest to annual cultures near Korup National Park in Cameroon.…”

Section: Discussionmentioning

confidence: 99%

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Avian diversity in a Kenyan agroecosystem: effects of habitat structure and proximity to forest

2007

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Tropical agroecosystems cover an increasingly large proportion of the Earth's terrestrial surface. Yet, relatively little is known about the factors that influence their avifauna, especially in areas of high human population density. The potential of tropical farmland for sustaining bird biodiversity, including forest birds, can be influenced by habitat structure and the distance from the nearest forest. We investigated the effect of these two factors on the bird community in the farmland near Kakamega Forest, Kenya. Using point counts, we assessed the number of bird species and individuals on 56 study plots in distances up to about 2,100 m from the forest. We observed a total of 96 bird species in the farmland, 22 of which were forest, 58 shrub-land, and 16 open-country species. High vertical vegetation heterogeneity and a large number of woody plant individuals were related to high species richness of forest and shrub-land birds, whereas open-country birds avoided such areas. The species richness and total number of forest birds declined with increasing distance to the forest. A comparison with the bird community within Kakamega Forest indicated that only a fraction of the forest species could be sustained in the farmland. This suggests that agroecosystems with a diverse habitat structure can support a high diversity of birds, but have only a limited capacity to compensate for forest loss.

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Section: Discussionmentioning

confidence: 99%

“…Another 15 bird species are regionally threatened (e.g. Glaucidium tephronotum, Prodotiscus insignis and Phyllastrephus baumanni) and 46 bird species are probably found nowhere else in Kenya (Bennun and Njoroge 1999). Savalli (1989) found a total of 358 bird species in and around Kakamega forest.…”

Section: Study Areamentioning

confidence: 99%

Avian diversity in a Kenyan agroecosystem: effects of habitat structure and proximity to forest

2007

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“…At least 46 species occurring in Kakamega Forest are probably found nowhere else in Kenya (e.g. Grey Parrot Psittacus erithacus [Bennun and Njoroge, 1999]). …”

Section: Study Areamentioning

confidence: 99%

“…The forest's species composition indicates a transitional position between the lowland Congolian rainforests and the Afro-montane forests east of the Rift valley (White, 1983;Kokwaro, 1988). Kakamega Forest is an Important Bird Area with 367 bird species including two globally threatened species (Chapin's Flycatcher Muscicapa lendu and Turner's Eremomela Eremomela turneri [BirdLife International, 2006]), and 15 regionally threatened species (Bennun and Njoroge, 1999). The 194 forest-dependent species include 40 of Kenya's 43 Guinea-Congo Forests biome species, and 33 of Kenya's 70 Afrotropical Highlands biome species.…”

Section: Study Areamentioning

confidence: 99%

Conservation value of forest plantations for bird communities in western Kenya

Farwig

Sajita

Böhning‐Gaese

2008

Forest Ecology and Management

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“…Formerly abundant along the east African coast from Kenya to Malawi and Mozambique, S. gunningi is now found primarily in the coastal forests of Kenya, with the largest remnant population (approx. 7500 pairs) residing year-round in ArabukoSokoke Forest (ASF), a 429 km 2 forest reserve that is the largest remnant patch of indigenous coastal forest in East Africa (Bennun and Njoroge, 1999;Birdlife International, 2008;Banks et al, 2012). S. gunningi is patchily distributed in ASF, with territories ranging from 100 to 200 m in diameter .…”

Section: Study Organism/sitementioning

confidence: 99%

Optimal sampling frequency and timing of threatened tropical bird populations: A modeling approach

Banks

Rinnovatore

et al. 2015

Ecological Modelling

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a b s t r a c tConservation of threatened or endangered species relies critically on accurate population counts over time. In practice, many population censuses are conducted by non-governmental organizations or volunteer citizen scientists who are constrained by fiscal and temporal resources. Less than optimal sampling regimens (characterized by infrequent and/or irregular schedules) for conducting population censuses can result in woefully misleading population estimates -and thus have dire consequences for management and conservation. We illustrate this using an East African case study in which 14 years of bird data was collected in the Arabuko-Sokoke Forest in coastal Kenya. We first estimate life history parameters in a discrete matrix model. Desiring a data collection protocol which would lessen observation error and lend to a deeper understanding of population projections and dynamics of a threatened species, we carry out mathematical and statistical modeling efforts with an adaptation of a Leslie model for simulated population estimates stemming from different population sampling schemes. We illustrate how resource managers might take a strategic approach, using simple quantitative models, to develop an optimal sampling scheme that considers important species traits, such as breeding season, and balances the tradeoff between resources and accuracy.

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Important Bird Areas in Kenya

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 80 publications

References 1 publication

Avian diversity in a Kenyan agroecosystem: effects of habitat structure and proximity to forest

Avian diversity in a Kenyan agroecosystem: effects of habitat structure and proximity to forest

Conservation value of forest plantations for bird communities in western Kenya

Optimal sampling frequency and timing of threatened tropical bird populations: A modeling approach

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