Описание
This dataset comprises bird occurrence records collected across seven regions in Namibia: Kunene, //Kharas, Khomas, Kavango East, Oshana, Oshikoto, and Zambezi, during the November to December 2023 field campaign. The primary objective of the study was to assess the diversity, distribution, and community structure of bird species along environmental gradients, contributing valuable baseline data for biodiversity monitoring, ecological modelling, and conservation planning across Namibia. Bird surveys were systematically conducted using standardised avian monitoring protocols tailored to habitat structure. Point counts were used in structurally heterogeneous environments (e.g., woodland and savanna mosaics), while line transects were deployed in more open habitats such as grasslands and semi-arid shrublands. Each survey originated from a vegetation plot (50 × 50 meters), extending along a 2-kilometre transect. A total of 33 transects were surveyed across Namibia’s key ecological zones. Surveys were conducted over three consecutive early mornings per transect, between 06:00 and 11:00, coinciding with peak avian activity periods. At 500-meter intervals, observers paused to conduct structured point counts. At each stop, an initial 3-minute acclimation period was observed to minimise disturbance, followed by an 8-minute observation window, split into two 4-minute intervals. All bird species seen or heard within a 50-meter radius were recorded, alongside metadata such as estimated distance from observer, behavioural notes, and individual counts. Species identification was performed in the field using a of regional bird guides to species level. At each transect, surveyors recorded the start and end times, GPS coordinates, and habitat descriptions to contextualise species occurrences within ecological and spatial frameworks. This dataset offers taxonomically rich and spatially explicit information on avian communities inhabiting Namibia’s savannas, floodplains, arid shrublands, and dry woodlands. It provides critical insights into how avian diversity and composition respond to environmental variability, land use patterns, and ecological gradients. In addition to supporting national conservation priorities, the dataset also lays a foundational baseline for future potential avian trait-based studies.
Записи данных
Данные этого occurrence ресурса были опубликованы в виде Darwin Core Archive (DwC-A), который является стандартным форматом для обмена данными о биоразнообразии в виде набора из одной или нескольких таблиц. Основная таблица данных содержит 422 записей.
Данный экземпляр IPT архивирует данные и таким образом служит хранилищем данных. Данные и метаданные ресурсов доступны для скачивания в разделе Загрузки. В таблице версий перечислены другие версии ресурса, которые были доступны публично, что позволяет отслеживать изменения, внесенные в ресурс с течением времени.
Версии
В таблице ниже указаны только опубликованные версии ресурса, которые доступны для свободного скачивания.
Как оформить ссылку
Исследователи должны дать ссылку на эту работу следующим образом:
Nako E, Matheus S, Fabiano E (2025). Bird occurences across Namibia in 2023. Version 1.0. University of Namibia. Occurrence dataset. https://cloud.gbif.org/africa/resource?r=birds_of_namibia&v=1.0
Права
Исследователи должны соблюдать следующие права:
Публикующей организацией и владельцем прав на данную работу является University of Namibia. Эта работа находится под лицензией Creative Commons Attribution (CC-BY 4.0).
Регистрация в GBIF
Этот ресурс не был зарегистрирован в GBIF
Ключевые слова
Occurrence; Birds; Namibia; environmental gradient; taxonomic presence; Observation
Контакты
- Metadata Provider ●
- Originator ●
- Point Of Contact
- Research fellow
- Originator
- Undergraduate student
- Point Of Contact
- Point Of Contact
- Project Coordinator
Географический охват
This dataset comprises bird occurrence records collected across seven administrative regions of Namibia during the November to December 2023 field campaign. The surveyed areas span Namibia’s major ecological and climatic zones, from the hyper-arid deserts of the south to the mesic floodplains in the northeast, providing a comprehensive spatial and environmental framework for assessing bird diversity, habitat preferences, and distribution patterns across the country. Kunene Region (approx. 18.74° S, 13.99° E) Situated in northwestern Namibia, Kunene features a mosaic of arid and semi-arid landscapes, including mopane woodlands, rocky escarpments, and ephemeral riverbeds. The region supports a range of bird species adapted to dry savanna and mountainous habitats, including several endemics and desert specialists. //Kharas Region (approx. 27.61° S, 17.52° E) As Namibia’s southernmost region, //Kharas encompasses vast expanses of the Namib Desert and Succulent Karoo. Its open gravel plains, inselbergs, and ephemeral drainage lines support sparse vegetation and specialized bird communities, including ground-nesting species and aerial insectivores adapted to arid conditions. Khomas Region (approx. 22.56° S, 17.08° E) Centrally located, Khomas is characterized by rugged terrain in the Khomas Hochland and transitional savannas. The region offers a blend of thornbush habitats and rocky escarpments, providing important niches for raptors, seed-eating passerines, and shrubland-dependent species. Kavango East Region (approx. 18.08° S, 20.53° E) This northeastern region lies along the perennial Kavango River and is known for its Baikiaea–Burkea woodland belt. It features high avian diversity associated with riparian corridors, riverine forests, and mixed broadleaf woodlands—habitats that support both resident and migratory bird species. Oshana Region (approx. 17.73° S, 15.68° E) Part of the Cuvelai Basin, Oshana comprises mopane-dominated woodlands interspersed with seasonal floodplains and shallow pans. The dynamic hydrological regime supports waders, wetland species, and bushveld-associated birds, particularly during the wet season. Oshikoto Region (approx. 18.47° S, 16.80° E) Located in north-central Namibia, Oshikoto features elevated terrain with mixed mopane and broadleaf savannas. It supports a range of granivorous, insectivorous, and cavity-nesting birds, many of which thrive in the dense woodland stands typical of the area. Zambezi Region (approx. 17.50° S, 24.27° E) The most mesic region of Namibia, Zambezi includes floodplains, miombo woodlands, and riparian forests. With the country’s highest rainfall, this area supports one of Namibia’s richest bird communities, including wetland specialists, forest dwellers, and a significant number of Afrotropical migrants.
| Ограничивающие координаты | Юг Запад [-27,059, 12,085], Север Восток [-17,044, 24,719] |
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Таксономический охват
This dataset includes bird occurrence records representing a taxonomically diverse subset of Namibia’s avifauna, collected during field surveys conducted across seven administrative regions in November and December 2023. The recorded taxa span multiple avian orders and families, capturing species typical of arid, semi-arid, woodland, floodplain, and savanna habitats across the country. The dataset is dominated by species from the order Passeriformes, which includes a wide variety of small to medium-sized perching birds, such as weavers, larks, chats, and starlings. This group is highly speciose and ecologically diverse, reflecting their widespread distribution across all sampled regions. Also represented are members of the order Columbiformes, which includes pigeons and doves, commonly encountered across Namibia’s landscapes, especially in open woodlands and urban fringes. Other notable orders include: Apodiformes: fast-flying swifts adapted to aerial insectivory, typically found near water bodies or cliffs. Coraciiformes: including colorful rollers and kingfishers, which are often associated with woodland edges and riparian zones. Coliiformes: mousebirds, small frugivorous species adapted to arid scrub and savanna vegetation. Otidiformes: ground-dwelling bustards, including the family Otididae, common in open grasslands and dry savannas. Charadriiformes: including shorebirds and waders, observed near seasonal pans and floodplains. Species-level identification was achieved through direct visual and auditory observation supported by expert field guides and mobile identification tools. Taxonomic classification followed standard ornithological references, with records primarily resolved to the family and genus level. The presence of species such as Anthus cinnamomeus (Plain-backed Pipit) illustrates the dataset’s inclusion of both habitat generalists and more specialized taxa. Overall, the dataset provides broad taxonomic coverage of terrestrial and near-water bird communities in Namibia, serving as a critical reference for future biodiversity monitoring, habitat association studies, and conservation planning.
Временной охват
| Период формирования | November - December 2023 |
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Данные проекта
Описание отсутсвует
| Название | Establishing Capacity for the Sustained Production of National Spatial Biodiversity Data Products: Guiding Progress towards the post2020 Global Biodiversity Framework Goals and Targets |
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Исполнители проекта:
- Principal Investigator
- Point Of Contact
Методы сбора
Bird surveys were structured around both point count and line transect methods, with protocols tailored to landscape type and vegetation structure. In structurally diverse northern and central regions—such as Kunene, Zambezi, Khomas, and Hardap—a point count method was employed. From each selected 50 × 50-meter vegetation plot, a 2-kilometer transect was established. Three transects were designated per quarter-degree cell, and each transect was surveyed three times on consecutive early mornings to enhance detection reliability. Surveyors walked along the transect and paused every 500 meters to conduct stationary bird counts. At each point, a 3-minute resting period was observed to minimize disturbance, followed by an 8-minute bird observation period divided into two 4-minute segments. Observers recorded all birds seen or heard within a 50-meter radius, noting species identity, behavior, estimated distance from the observer, and individual count. Observations occurred between 06:00 and 11:00 to coincide with peak avian activity. In the open habitats of //Kharas, a line transect method was used. Surveyors walked a continuous 2-kilometer transect originating from the same type of 50 × 50-meter plot, recording all bird sightings and their perpendicular distance from the transect line. This approach was effective in maximizing detection in sparsely vegetated, wide-open environments.
| Охват исследования | This study was conducted across Namibia during the period of November to December 2023, targeting twelve strategically selected sampling locations that span the country’s major environmental gradients, habitat types, and bioclimatic zones. The selected sites were distributed across nine administrative regions: Kunene, Oshana, Oshikoto, Zambezi, Kavango East, Khomas, Hardap, and //Kharas. These regions encompass key Namibian biomes, including arid deserts, savannas, woodlands, and floodplains, ensuring broad ecological coverage for avian biodiversity assessments. Sampling was based on pre-existing quarter-degree grid cells, each approximately 25 × 25 kilometers in size. Site selection was guided by ecological heterogeneity, variations in vegetation structure, topography, and species richness gradients. This spatial framework facilitated a systematic and representative approach to surveying Namibia’s diverse bird communities. The northern regions (Kunene, Oshana, Oshikoto, Zambezi, and Kavango East) fall within a subtropical to semi-arid climate zone, with rainfall ranging from 700 mm in the northeast to 400 mm in the northwest. These areas support a mosaic of mopane woodlands, broadleaf savannas, and seasonally flooded habitats, ideal for both resident and migratory bird species. The central regions (Khomas and Hardap) are arid to semi-arid, encompassing transitional landscapes between savanna and desert ecosystems. Rainfall ranges from 50 to 150 mm annually, and bird species found here are often drought-tolerant and habitat generalists. The southern region, represented by //Kharas, is characterized by hyper-arid desert systems, receiving less than 100 mm of annual rainfall. This region includes the Namib Desert and supports a unique bird fauna adapted to extreme aridity and open landscapes. Three quarter-degree cells—located in Kunene, Zambezi, and //Kharas—were further subdivided into 5 × 5 km sub-cells to enable more intensive sampling of critical biomes: Acacia savanna (Kunene), broadleaf woodland and floodplain (Zambezi), and arid desert (//Kharas). |
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| Контроль качества | All bird identifications were conducted to species level using a combination of expert knowledge, regional field guides, and mobile identification apps such as Merlin and Roberts Bird Guide. Observers were trained to distinguish species by both visual and auditory cues. Ambiguous sightings were documented with field notes and audio recordings for later validation by experts. Coordinates were captured using handheld Garmin GPS devices at both transect starting points and observation stations to ensure spatial accuracy. Survey methods and effort were standardized across all sites to ensure comparability and reduce sampling bias. Prior to the field campaign, all equipment—including GPS units, field guides, and mobile apps—was tested and calibrated. Observation protocols were rehearsed by the field team to ensure consistency in timing, distance estimation, and species recording across all observers and regions. |
Описание этапа методики:
- The bird data collection followed a structured and repeatable methodology designed to ensure consistency, minimize observer bias, and maximize detectability across Namibia’s diverse ecological zones. The steps were as follows: Transect Setup In each selected quarter-degree cell, a 2-kilometer transect was established, originating from a pre-designated 50 × 50-meter plot. This plot was typically used as a vegetation reference point and served as the starting location for bird surveys. Survey Timing Surveys were conducted early in the morning (06:00–11:00), aligning with peak bird activity to enhance detectability. Each transect was surveyed on three consecutive days, allowing for temporal replication and accounting for day-to-day variability in bird presence and activity. Point Count Protocol Along each transect, observers paused at 500-meter intervals (yielding 5 points per transect). At each point: A 3-minute resting period was observed to reduce disturbance. An 8-minute bird count was conducted, divided into two 4-minute observation intervals. All birds seen or heard within a 50-meter radius were recorded. Additional metadata included behavior, number of individuals, estimated distance from the observer, and habitat type. Line Transect Method (Open Habitats) In open landscapes (notably in the //Kharas region), the line transect method was employed instead of point counts. Surveyors: Walked the 2-kilometer transect at a steady pace. Recorded each bird observed, estimating its perpendicular distance from the transect line. Maintained consistent scanning effort to minimize detection bias. Species Identification All birds were identified to species level using field expertise and supported by mobile applications (e.g., Merlin Bird ID, Roberts Bird Guide) and regional guidebooks. Uncertain identifications were noted for later expert validation. Data Recording & Verification Observers recorded: Start and end time of each transect. GPS coordinates using Garmin handheld units. Habitat type and any disturbances. All avian data were transcribed into standardized digital datasheets post-survey and quality-checked for accuracy and completeness. Replication & Coverage Three transects per cell, each repeated thrice, provided a robust sampling framework that captured spatial and temporal variation. This design ensured that both common and rare species, as well as those with variable detectability, were included.
Дополнительные метаданные
| Благодарности | We gratefully acknowledge the JRS Biodiversity Foundation for generously funding the fieldwork (and the entire project )that made this dataset possible. We also extend our sincere thanks to all the field surveyors whose dedication and effort were instrumental in data collection. In particular, we would like to thank Rosalia Kashala, Arnold Mubyana, Colin Kachaka, Naomi Johannes, Nuuyoma Johannes, Tangeni Nakapipi, Jutta Endjala, Saar Nghaamwa, Hiskia Athingo, Albertina Shikongo, Sarafina Conrad, Hikevali Ndinomuwa, and Severin Iita for their valuable contributions in the field. |
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| Цель | The primary aim of this dataset is to assess the taxonomic and functional diversity of bird communities across Namibia’s broad environmental gradients. Birds serve as vital ecological indicators due to their sensitivity to habitat changes, their roles in seed dispersal, pollination, pest control, and their presence across diverse trophic levels. Despite their ecological significance, detailed distribution and diversity data on avian species across Namibia’s arid, semi-arid, and subtropical systems remain limited.This dataset provides baseline occurrence records for bird species observed across seven administrative regions: Kunene, Kharas, Khomas, Kavango East, Oshana, Oshikoto, and Zambezi. These regions encompass a range of ecological zones—including desert, savanna, and woodland systems—each supporting distinct bird assemblages shaped by climate, vegetation structure, and land use. The dataset spans a broad taxonomic scope, with prominent representation from orders such as Passeriformes, Columbiformes, Apodiformes, Coraciiformes, and Otidiformes. These include species with a wide variety of foraging strategies, habitat specialisations, and migratory behaviors, ranging from nectar-feeding sunbirds and granivorous doves to aerial insectivores and ground-dwelling bustards. This dataset thus contributes valuable insights into Namibia’s avian biodiversity and forms a critical baseline for future monitoring, ecological modelling, and conservation planning. |
| Описание частоты обновления ресурса | The dataset will be maintained on an as-needed basis. Updates may be made when new data become available, when taxonomic changes occur, or when corrections or user feedback are received. Although there is no fixed update schedule, the dataset curator will make sure the information remains accurate and relevant. Significant changes or additions will be documented in updated versions of the dataset. |
| Альтернативные идентификаторы | https://cloud.gbif.org/africa/resource?r=birds_of_namibia |