Different land-use types affect bird communities in the Kalahari, South Africa

Hudson, Adrian; Bouwman, Hindrik

doi:10.1111/j.1365-2028.2006.00750.x

Cited by 7 publications

(7 citation statements)

References 12 publications

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“…Floristically, areas within and outside the PAs surveyed here, are similar (Voysey 2018), yet structurally the areas outside the PAs have experienced significant levels of woody thickening over the last 70 years (Stevens et al 2016), which has resulted in a homogenisation of the vegetation structure in CRs. Elsewhere, structural variation of both woody and grassy vegetation is the most important determinant of savanna avian assemblages (Hudson & Bouwman 2007;Krook et al 2007;Sirami et al 2009;Skowno & Bond 2003), and may explain why the more open and structurally heterogeneous vegetation of the PAs in this study supported a greater bird species richness, distinct species assemblage composition and a greater incidence of open habitat bird species.…”

Section: Discussionmentioning

confidence: 72%

“…The greater avian diversity seen within the structurally more diverse PAs may partially be because of the availability of more niches associated with variable vegetation structure (Hudson & Bouwman 2007). The PAs showed more variation in grass height compared to CRs, where grass was constantly kept short, and showed little variation in grass height because of constant grazing by cattle in these areas (Figure 2-A1) (Voysey 2018).…”

Section: Discussionmentioning

confidence: 99%

“…The composition of avian assemblage in South African savannas is affected by differences in grass and woody vegetation structure (Hudson & Bouwman 2007;Krook, Bond & Hockey 2007;Skowno & Bond 2003). Thus, structural vegetation attributes were recorded for the first 500 m of each transect.…”

Section: Vegetation Samplingmentioning

confidence: 99%

See 2 more Smart Citations

Changes in bird assemblages because of vegetation homogenisation in communal livestock systems

Harris

Voysey

Jamison

et al. 2019

KOEDOE - African Protected Area Conservation and Science

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Section: Discussionmentioning

confidence: 72%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Changes in bird assemblages because of vegetation homogenisation in communal livestock systems

Harris

Voysey

Jamison

et al. 2019

KOEDOE - African Protected Area Conservation and Science

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“…In community ecology, several statistical frameworks have been proposed and used to test hypotheses on community dynamics (Buckley, Day, Lear, et al, 2021; De Cáceres et al, 2019). The dynamics of ecological communities has been traditionally represented on ordination diagrams in which changes over time are represented by a set of vectors linking consecutive ecological states (Austin, 1977; Hudson & Bouwman, 2007; Legendre & Salvat, 2015; Matthews et al, 2013). The geometric properties of trajectories, defined in the space of an ordination diagram, are considered as relevant parameters to quantify the dynamics of ecological systems.…”

Section: Introductionmentioning

confidence: 99%

Stable Isotope Trajectory Analysis (SITA): A new approach to quantify and visualize dynamics in stable isotope studies

Sturbois

Cáceres

Desroy

et al. 2022

Ecological Monographs

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“…Agregado ao fato de haver remanescentes florestais com maior proporção de área sem efeito de borda está a diversidade de tipos de áreas destinadas à conservação presentes em uma paisagem, que conhecidamente também promove a presença de maior riqueza de espécies de aves, podendo ser composta por diferentes traços (WILLSON, 1974;HUDSON;BOUWMAN, 2007;BURGESS;MARON, 2016).…”

Section: Resposta Da Diversidade Funcional De Aves à Estrutura Da Paiunclassified

Resposta da assembleia de aves ao planejamento da paisagem em florestas plantadas

Melo¹

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How to expand the supply of ecosystem services in agricultural production areas has been a very current debate, as protected areas do not seem to be sufficient to ensure, for example, the conservation of biodiversity. Birds, for example, are one of biological communities affected by the production which respond rapidly to changes in the landscape. This study aimed to understand how landscape planning of fast growing planted forests can influence bird assembly functional diversity. Therefore, landscapes composed by eucalyptus plantations located at Espírito Santo and southern Bahia, were organized into Landscape Planning Units (UPP). Secondary data from bird surveys conducted from 2005 to 2010 were used. Bird species were characterized into four functional traits: trophic guild, forage extract, habitat and average body mass. Three independent metrics were then calculated to represent functional diversity: functional richness (FRic), functional evenness (FEve) and functional divergence (FDiv). In order to obtain landscape metrics it was used the 2010 land-use map. Based on this map, the diversity of clones (IDCL) and ages (IDID) of forest plantation were calculated, and, for conservation areas, diversity of vegetation typologies (IDNAT), proportion of areas intended for conservation (IPANP), edge density (IDBRD), proportion of nuclear area (IPAC), proximity to native vegetation (IPNAT) and ecological importance value (IVAN). Subsequently, correlation analysis and simple linear regression were applied to these two groups of variables (functional diversity and landscape metrics). Birds surveys registered 218 species and 3455 individuals. The insectivores were the most expressive individuals for the trophic guild. For the forage stratum trait, canopy individuals were the most abundant and forest habitat birds predominated at studied landscapes. A significant relationship was found between the rates of functional diversity of birds and at least one of the landscape metrics. Thus, IPAC was directly related to diversity of functions performed by the bird assembly in the landscape (FRic). IDNAT was negatively related to FEve, indicating that a greater diversity of conservation areas provides a disproportionate variety of functions and abundances in the bird assembly Also, bird assemblages are more divergent (FDiv), having less competition for resources, when the forest fragments are structured connected (IPNAT) and have greater ecological importance (IVAN). In this context, components of bird assembly functional diversity are influenced by the landscape structure in matrix composed by fast-growing planted forests, and, actions that enhance birds functional diversity should be given at the landscape scale in order to keep production and conservation present in the same complex landscape unit.

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Different land-use types affect bird communities in the Kalahari, South Africa

Cited by 7 publications

References 12 publications

Changes in bird assemblages because of vegetation homogenisation in communal livestock systems

Changes in bird assemblages because of vegetation homogenisation in communal livestock systems

Stable Isotope Trajectory Analysis (SITA): A new approach to quantify and visualize dynamics in stable isotope studies

Resposta da assembleia de aves ao planejamento da paisagem em florestas plantadas

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