Evidence map›Paper›PMID 33436644›Full record

ArticleScientific reports2021

Assumptions about fence permeability influence density estimates for brown hyaenas across South Africa.

Kathryn S Williams, Samual T Williams, Rebecca J Welch, Courtney J Marneweck, Gareth K H Mann, Ross T Pitman, Gareth Whittington-Jones, Guy A Balme, Daniel M Parker, Russell A Hill

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.

0numbers the graph read from it
0cells of the map it votes in
2citing papers in PubMed
1.3field-weighted citation impact, top 20% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

2 citing papers in PubMed, 13 citations in OpenAlex.

  1. A Novel Record of Brown Hyaena (Ecology and evolution · 2025
    Article
  2. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 4 institutions in 3 countries.

Kathryn S Williams *Department of Anthropology, Durham University, Dawson Building, South Road, Durham, DH1 3LE, UK.
Samual T Williams *Department of Anthropology, Durham University, Dawson Building, South Road, Durham, DH1 3LE, UK. samual.t.williams@gmail.com.
Rebecca J WelchSchool of Biology and Environmental Sciences, University of Mpumalanga, Nelspruit, 1200, South Africa.
Courtney J MarneweckSchool of Biology and Environmental Sciences, University of Mpumalanga, Nelspruit, 1200, South Africa.
Gareth K H MannPanthera, 8 W 40th Street 18th Floor, New York, NY, 10018, USA.
Ross T PitmanPanthera, 8 W 40th Street 18th Floor, New York, NY, 10018, USA.
Gareth Whittington-JonesPanthera, 8 W 40th Street 18th Floor, New York, NY, 10018, USA.
Guy A BalmePanthera, 8 W 40th Street 18th Floor, New York, NY, 10018, USA.
Daniel M ParkerSchool of Biology and Environmental Sciences, University of Mpumalanga, Nelspruit, 1200, South Africa.
Russell A HillDepartment of Anthropology, Durham University, Dawson Building, South Road, Durham, DH1 3LE, UK.
Durham University · GBUniversity of Mpumalanga · ZAPanthera Corporation · USUniversity of Cape Town · ZA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Wildlife population density estimates provide information on the number of individuals in an area and influence conservation management decisions. Thus, accuracy is vital. A dominant feature in many landscapes globally is fencing, yet the implications of fence permeability on density estimation using spatial capture-recapture modelling are seldom considered. We used camera trap data from 15 fenced reserves across South Africa to examine the density of brown hyaenas (Parahyaena brunnea). We estimated density and modelled its relationship with a suite of covariates when fenced reserve boundaries were assumed to be permeable or impermeable to hyaena movements. The best performing models were those that included only the influence of study site on both hyaena density and detection probability, regardless of assumptions of fence permeability. When fences were considered impermeable, densities ranged from 2.55 to 15.06 animals per 100 km

Indexed as

Conservation of Natural ResourcesAnimalsAnimals, WildEnvironmental MonitoringFemaleHyaenidaeMalePermeabilityPopulation DensitySouth Africa

Identifiers

PMID33436644
PMCPMC7804016
OpenAlexW3120016750

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.