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

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說明

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.

資料紀錄

此資源sampling event的資料已發佈為達爾文核心集檔案（DwC-A），其以一或多組資料表構成分享生物多樣性資料的標準格式。核心資料表包含 3,915 筆紀錄。

亦存在 2 筆延伸集的資料表。延伸集中的紀錄補充核心集中紀錄的額外資訊。每個延伸集資料表中資料筆數顯示如下。

3915

2088

118

此 IPT 存放資料以提供資料儲存庫服務。資料與資源的詮釋資料可由「下載」單元下載。「版本」表格列出此資源的其它公開版本，以便利追蹤其隨時間的變更。

版本

以下的表格只顯示可公開存取資源的已發布版本。

如何引用

研究者應依照以下指示引用此資源。:

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

權利

研究者應尊重以下權利聲明。:

此資料的發布者及權利單位為 Chimbo。 This work is licensed under a Creative Commons Attribution (CC-BY 4.0) License.

GBIF 註冊

此資源尚未向GBIF註冊

關鍵字

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

聯絡資訊

Joost van Schijndel

出處

Chimbo Foundation

Annemarie Goedmakers

連絡人

Chimbo Foundation

Annemarie Goedmakers

連絡人

Chimbo Foundation

Huningspaed 6

8567 LL Oudemirdum

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

https://www.chimbo.org/

地理涵蓋範圍

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

界定座標範圍	緯度南界經度西界 [11.7, -14.3], 緯度北界經度東界 [12.1, -13.6]

分類群涵蓋範圍

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
Species	Pan troglodytes verus (Western Chimpanzee)

時間涵蓋範圍

起始日期 / 結束日期	2014-01-01 / 2014-12-31

計畫資料

無相關描述

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

參與計畫的人員:

Joost van Schijndel

研究主持人

取樣方法

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

研究範圍	Boe sector line-transect network, 2014 field season.

方法步驟描述:

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.

額外的詮釋資料

維護說明	TODO: e.g. "completed" or "ongoing" depending on whether more Boe survey years will be added.
替代的識別碼	https://ipt.nlbif.nl/resource?r=boe_guinee-bissau_line-transects