Line transect surveys of chimpanzees (Pan troglodytes verus) and other medium/large mammals in Boe, Guinea-Bissau, 2014

Dados como um arquivo DwC-A	download 3.915 registros em English (151 KB) - Frequência de atualização: não plenejado
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Descrição

This dataset presents line-transect survey data collected in the Boe sector, Gabu Region, southeastern Guinea-Bissau, in 2014, as part of field monitoring following the Pan African Programme's standardized survey protocol for great apes and associated fauna. Fourteen fixed ~3,750 m transects (L1N/S through L7N/S) were each walked one to three times during 2014. Observers recorded every direct sighting and indirect sign (nests, dung, footprints, vocalisations, feeding remains, tool-use evidence) of western chimpanzees (Pan troglodytes verus) and other medium/large mammals encountered along each transect, together with the perpendicular distance to each detection, GPS location, and habitat type. Each transect walk (transect x round) is a parent Event; each recorded waypoint along that walk is a child Event. Species detections are linked via the Occurrence extension. Because each transect walk has an explicit, reported taxonomic scope (medium/large Mammalia, chiefly P. t. verus), non-detection of a species that was recorded elsewhere in the Boe dataset during that walk is published as an explicit dwc:occurrenceStatus = absent record, following GBIF's Humboldt Extension for Ecological Inventories guidance. Quantitative measurements (perpendicular distance, tool dimensions, transect length) are published via the Extended MeasurementOrFact extension. NOTE ON ABSENCE INFERENCE: the target species pool used to infer absence is restricted to the 34 species/taxa actually detected somewhere in the Boe line-transect dataset during 2014-2015.

Registros de Dados

Os dados deste recurso de evento de amostragem foram publicados como um Darwin Core Archive (DwC-A), que é o formato padronizado para compartilhamento de dados de biodiversidade como um conjunto de uma ou mais tabelas de dados. A tabela de dados do núcleo contém 3.915 registros.

Também existem 2 tabelas de dados de extensão. Um registro de extensão fornece informações adicionais sobre um registro do núcleo. O número de registros em cada tabela de dados de extensão é ilustrado abaixo.

3915

2088

118

This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.

Versões

A tabela abaixo mostra apenas versões de recursos que são publicamente acessíveis.

Como citar

Pesquisadores deveriam citar esta obra da seguinte maneira:

van Schijndel J, Goedmakers A (2026). Line transect surveys of chimpanzees (Pan troglodytes verus) and other medium/large mammals in Boe, Guinea-Bissau, 2014. Version 1.0. Chimbo. Samplingevent dataset. https://ipt.nlbif.nl/resource?r=boe_guinee-bissau_line-transects&v=1.0

Direitos

Pesquisadores devem respeitar a seguinte declaração de direitos:

O editor e o detentor dos direitos deste trabalho é Chimbo. This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

GBIF Registration

Este recurso não foi registrado pelo GBIF

Palavras-chave

chimpanzee; Pan troglodytes verus; line transect; distance sampling; Guinea-Bissau; Boe; Samplingevent; Samplingevent; Observation

Contatos

Joost van Schijndel

Originador

Chimbo Foundation

Annemarie Goedmakers

Ponto De Contato

Chimbo Foundation

Annemarie Goedmakers

Ponto De Contato

Chimbo Foundation

Huningspaed 6

8567 LL Oudemirdum

+31-6-17280797
+245-955.521.674
+245-966.726.916

https://www.chimbo.org/

Cobertura Geográfica

Boe sector, Gabu Region, southeastern Guinea-Bissau (Boe National Park and surrounding forest-savannah mosaic)

Coordenadas delimitadoras	Sul Oeste [11,7, -14,3], Norte Leste [12,1, -13,6]

Cobertura Taxonômica

Medium and large Mammalia, with a primary focus on Pan troglodytes verus (western chimpanzee); incidental records of other vertebrates and human activity signs.

Class	Mammalia
Espécie	Pan troglodytes verus (Western Chimpanzee)

Cobertura Temporal

Data Inicial / Data final	2014-01-01 / 2014-12-31

Dados Sobre o Projeto

Nenhuma descrição disponível

Título	Structured distance-sampling survey, per-observation rows, UTM coords, effort recorded (start/end waypoints, weather)

O pessoal envolvido no projeto:

Joost van Schijndel

Pesquisador Principal

Métodos de Amostragem

Standardised line-transect distance sampling; see dwc:samplingProtocol and the Humboldt extension eco:protocolDescriptions field in event.txt for per-event detail.

Área de Estudo	Boe sector line-transect network, 2014 field season.

Descrição dos passos do método:

Fourteen fixed transects (L1N, L1S ... L7N, L7S), each approximately 3,750 m long, were pre-cut through the Boe survey area to sample the range of habitats present (forest, forest-on-rock, gallery forest, savannah, fallow, marshes). Each transect was walked slowly by a team including at least one trained observer and local field assistants. All direct sightings and indirect signs of chimpanzees and other medium/large mammals within visual range of the line were recorded, together with GPS waypoint, perpendicular distance from the line, habitat at the point of detection, and (for chimpanzee nests) decay stage. Each transect was walked one to three times during 2014 (rounds 1-3). Weather conditions, start/end times, and the field team were logged for each walk.

Metadados Adicionais

Descrição da manutenção	TODO: e.g. "completed" or "ongoing" depending on whether more Boe survey years will be added.
Identificadores alternativos	https://ipt.nlbif.nl/resource?r=boe_guinee-bissau_line-transects