LATEST ARTICLES
This page lists 20 of the articles most recently published on nisc.co.za. Please note that you can also browse by journal or use the search function above. Subscribe to your favourite journals and be the first to know about new articles for it.
Evolution, population structure and morphology of the African Black Duck Anas sparsa and Yellow-billed Duck A. undulata
Published in :
Ostrich: Journal of African Ornithology, Journal Volume 96, Issue
2, 03 April 2025
Author(s):
Keywords:
co-ancestry, hybridisation, introgression, median-joining network, morphometrics, nucleotide diversity, population genetics, South Africa
Pages: 81–93
Article Views:
572
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Abstract
The number of human-simulated predators influences the escape behaviour of bird species in a West African protected area
Published in :
Ostrich: Journal of African Ornithology, Journal Volume 96, Issue
2, 03 April 2025
Author(s):
Keywords:
escape behaviour, flight initiation distance, human disturbance, predation avoidance, visitors’ impact
Pages: 94–102
Article Views:
584
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Abstract
The first record of Cape Clawless Otters Aonyx capensis predating on African Penguins Spheniscus demersus
Published in :
Ostrich: Journal of African Ornithology, Journal Volume 96, Issue
2, 03 April 2025
Author(s):
Keywords:
conservation threats, mainland penguin colonies, necropsy, predation
Pages: 135–139
Article Views:
573
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Abstract
The importance of Dakhla (Western Sahara) as a wintering site for Ospreys Pandion haliaetus: first systematic census
Published in :
Ostrich: Journal of African Ornithology, Journal Volume 96, Issue
2, 03 April 2025
Author(s):
Keywords:
migration, Morocco, raptors, Sahara Desert
Pages: 131–134
Article Views:
581
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Abstract
Occurrence and persistence of Blacksmith Lapwings Vanellus armatus and Crowned Lapwings V. coronatus and their reproductive success in an urban mosaic landscape
Published in :
Ostrich: Journal of African Ornithology, Journal Volume 96, Issue
2, 03 April 2025
Author(s):
Keywords:
abundance, breeding behaviour, built environment, Charadriidae, hatching success, land use, nesting, urban ecology
Pages: 103–112
Article Views:
279
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Abstract
Urban persistence and species interactions: diverging trends in the abundance of Peregrine Falcons Falco peregrinus and Lanner Falcons F. biarmicus across southern Africa using the Southern African Bird Atlas Project
Published in :
Ostrich: Journal of African Ornithology, Journal Volume 96, Issue
2, 03 April 2025
Author(s):
Keywords:
citizen science, competitive displacement, conservation, distribution mapping, nest site selection, raptors, reporting rate, urban ecology
Pages: 113–122
Article Views:
88
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Abstract
Breeding dynamics and threats identified at a small colony of Critically Endangered Rüppell’s Vultures Gyps rueppellii in a Ugandan Forest Reserve
Published in :
Ostrich: Journal of African Ornithology, Journal Volume 96, Issue
2, 03 April 2025
Author(s):
Keywords:
breeding success, cliff-nesting raptors, drone monitoring, nest predation, vulture conservation
Pages: 123–130
Article Views:
93
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Abstract
Roberts Sunbirds and Sugarbirds of Southern Africa
Published in :
Ostrich: Journal of African Ornithology, Journal Volume 96, Issue
2, 03 April 2025
Author(s):
Keywords:
Pages: 140–141
Article Views:
51
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Abstract
The Common Hermitian Solutions of the matrix equations
B
2
X
B
2
*
=
A
2
and
B
3
X
B
3
*
=
A
3
subject to inequality restrictions
Published in :
Quaestiones Mathematicae, Journal Volume 48, Issue
8, 03 August 2025
Author(s):
Keywords:
Primary: 15A24, Secondary: 15B57, Variable substitution, Moore-Penrose generalized inverse, generalized singular value decomposition
Pages: 1137–1152
Article Views:
287
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Abstract
Functionally countable subspaces of nice products
Published in :
Quaestiones Mathematicae, Journal Volume 48, Issue
8, 03 August 2025
Author(s):
Keywords:
Primary: 54C35, Secondary: 54C25, 54H11, 54G12, Scattered space, Lindelöf space, P-space, Kurepa hypothesis, dense subspace, lc-scattered space, functionally countable space
Pages: 1153–1164
Article Views:
287
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Abstract
On the preservers of some subsets of the approximate point spectrum
Published in :
Quaestiones Mathematicae, Journal Volume 48, Issue
8, 03 August 2025
Author(s):
Keywords:
Primary: Primary: 47B48, Secondary: Secondary: 47A10, Preserver problem, approximate point spectrum, generalized product of operators
Pages: 1165–1181
Article Views:
288
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Abstract
Probabilistic bivariate Bell polynomials
Published in :
Quaestiones Mathematicae, Journal Volume 48, Issue
8, 03 August 2025
Author(s):
Keywords:
11B73, 11B83, 60-08, Probabilistic bivariate Bell polynomials, probabilistic bivariate r-Bell polynomials
Pages: 1183–1196
Article Views:
286
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Abstract
Effective descent morphisms of ordered families
Published in :
Quaestiones Mathematicae, Journal Volume 48, Issue
8, 03 August 2025
Author(s):
Keywords:
06A07, 18A25, 18A30, 18B35, 18D30, Effective descent morphisms, stable regular epimorphisms, lax comma categories, ordered families, free coproduct completion
Pages: 1197–1212
Article Views:
146
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Abstract
A note on the construction of non-spatial frames
Published in :
Quaestiones Mathematicae, Journal Volume 48, Issue
8, 03 August 2025
Author(s):
Keywords:
06D22, 18B35, 54D10, 06B10, 54D80, Non-spatial frame, ζ-ideal, kernel, κ
+-complete ideal
Pages: 1213–1224
Article Views:
157
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Abstract
Rota-Baxter operators on filiform Lie algebras
L
3
and
L
4
Published in :
Quaestiones Mathematicae, Journal Volume 48, Issue
8, 03 August 2025
Author(s):
Keywords:
17B38, 17B30, 16T25, Rota-Baxter operators, filiform Lie algebras, Yang-Baxter equation, left-symmetric algebras
Pages: 1225–1246
Article Views:
145
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Abstract
On β-adic expansions of powers of an algebraic integer omitting a digit
Published in :
Quaestiones Mathematicae, Journal Volume 48, Issue
8, 03 August 2025
Author(s):
Keywords:
Primary: Primary: 11A63, Secondary: Secondary: 11R04, Radix representation, digital problems, p-adic interpolation
Pages: 1247–1260
Article Views:
141
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Abstract
Diameter of orientations of graphs with given order and number of blocks
Published in :
Quaestiones Mathematicae, Journal Volume 48, Issue
8, 03 August 2025
Author(s):
Keywords:
Primary: Primary: 05C12, Secondary: Secondary: 05C20, diameter, oriented diameter, orientation number, block, block graph
Pages: 1261–1275
Article Views:
111
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Abstract
Comparative ecology of crustaceans in relation to physico-chemical parameters from three rivers in southern Ethiopia
Published in :
African Journal of Aquatic Science , Journal Volume 50, Issue
2, 03 April 2025
Author(s):
Keywords:
Beshir, Kalte, Olbiyawa, Wolaita, zooplankton
Pages: 166–174
Article Views:
268
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Abstract
Local community knowledge of biodiversity and ecosystem services from Rwanda: motivation for improved community engagement in biodiversity conservation and water resource management
Published in :
African Journal of Aquatic Science , Journal Volume 50, Issue
2, 03 April 2025
Author(s):
Keywords:
livelihood, socio-economic, development, law, policy, natural resources
Pages: 123–134
Article Views:
468
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Abstract
Changes in the macrobenthic community structure associated with finfish farming in Richards Bay Estuary, South Africa
Published in :
African Journal of Aquatic Science , Journal Volume 50, Issue
2, 03 April 2025
Author(s):
Keywords:
aquaculture, dusky kob, fish farm, macrobenthos, nutrient enrichment, organic enrichment, polychaetes, Richards Bay Harbour
Pages: 175–192
Article Views:
261
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Abstract