Evidence map›Paper›PMID 42798503›Full record

ArticleBiological invasions2026

Complex interactions among invasive fishes and flow barriers combine to maintain an endangered native species.

Danai Kontou, Dumisani Khosa, Sunčica Avlijaš, Anthony Ricciardi, Nicholas E Mandrak, Olaf L F Weyl, Josie South

Abstract read
In one paragraph

Article in Biological invasions, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

0numbers the graph read from it
0cells of the map it votes in
0citing papers in PubMed
–field-weighted citation impact
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

0 citing papers in PubMed.

No citing paper in PubMed yet.

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

7 authors.

Danai KontouWater@Leeds, School of Biology, Faculty of Health and Life Sciences, University of Leeds, Leeds, LS2 9JT UK.ORCID 0000-0002-0773-9540
Dumisani KhosaScientific Services, South African National Parks, Skukuza, 1350 South Africa.ORCID 0000-0002-3088-4797
Sunčica AvlijašFisheries and Oceans Canada, Bedford Institute of Oceanography, Dartmouth, NS B2Y 4A2 Canada.ORCID 0000-0002-2526-2707
Anthony RicciardiDepartment of Biology, McGill University, Montreal, QC H3A 1B1 Canada.ORCID 0000-0003-1492-0054
Nicholas E MandrakUniversity of Toronto, Toronto, ON M1C 1A4 Canada.ORCID 0000-0001-8335-9681
Olaf L F WeylSouth African Institute for Aquatic Biodiversity, Makhanda, 6139 South Africa.ORCID 0000-0002-8935-3296
Josie SouthWater@Leeds, School of Biology, Faculty of Health and Life Sciences, University of Leeds, Leeds, LS2 9JT UK.ORCID 0000-0002-6339-4225

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The Breede River in the Western Cape Province is one of South Africa's major freshwater systems and of high ecological and socio-economic value. Similar to other freshwater systems worldwide, it is threatened by environmental degradation and multiple invasive species. Understanding the biotic and abiotic processes that facilitate or hinder establishment and impact of co-occurring biological invasions is a critical knowledge gap that prevents proactive management efforts. This study combined data from an extensive monitoring survey with indices of human impact to explore whether biodiversity patterns indicate signals of environmental filtering and invasion meltdown using freshwater fish diversity and abiotic factors along the entire length of the Breede River. Native fish species occupancy was uneven while invasive non-native fishes were widely distributed and represented over 40% of the overall species richness. Fish diversity was negatively correlated with the relative frequency of a translocated predator, the sharptooth catfish (

Indexed as

Fish conservationFreshwater ecologyHuman footprintInvasive speciesSpecies interactions

Identifiers

PMID42798503
PMCPMC13612622

What OpenQuestion holds

Textmetadata
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.