Search Results - "Barker, Nigel P."

Seasonal Variation in Foliar Mite Diversity and Abundance in Leaf Domatia of Three Native South African Forest Species by Sivuyisiwe Situngu, Nigel P. Barker

“…Mite communities inhabiting plants are known to be affected by several environmental factors, including temperature and humidity. This pilot study aimed to…”
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A Comparative Study of the Anatomy of Leaf Domatia in Gardenia thunbergia Thunb., Rothmannia capensis Thunb., and Rothmannia globosa (Hochst.) Keay (Rubiaceae) by Situngu, Sivuyisiwe, Barker, Nigel P

“…Many dicotyledonous plants produce structures called leaf domatia. Approximately 28% of 290 families have species with leaf domatia. These structures are…”
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Contrasted patterns of hyperdiversification in Mediterranean hotspots by Sauquet, Hervé, Weston, Peter H, Anderson, Cajsa Lisa, Barker, Nigel P, Cantrill, David J, Mast, Austin R, Savolainen, Vincent

“…Dating the Tree of Life has now become central to relating patterns of biodiversity to key processes in Earth history such as plate tectonics and climate…”
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Phylogeny of the tribe Indigofereae (Leguminosae-Papilionoideae): Geographically structured more in succulent-rich and temperate settings than in grass-rich environments by Schrire, Brian D, Lavin, Matt, Barker, Nigel P, Forest, Félix

“…This analysis goes beyond many phylogenies in exploring how phylogenetic structure imposed by morphology, ecology, and geography reveals useful evolutionary…”
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Microbial Community Responses to Alterations in Historical Fire Regimes in Montane Grasslands by Gokul, Jarishma K, Matcher, Gwynneth, Dames, Joanna, Nkangala, Kuhle, Gordijn, Paul J, Barker, Nigel P

“…The influence of fire regimes on soil microbial diversity in montane grasslands is a relatively unexplored area of interest. Understanding the belowground…”
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Reorienting research investments toward under‐researched crops for sustainable food systems by Munialo, Sussy, Siddique, Kadambot H. M., Barker, Nigel P., Onyango, Cecilia Moraa, Amissah, Jacqueline Naalamle, Wamalwa, Lydia Nanjala, Qwabe, Qinisani, Dougill, Andrew J., Sibanda, Lindiwe Majele

“…The dominance of a few staple crops (maize, rice, and wheat) in most agricultural systems hampers the application of interventions to improve food security and…”
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Phylogeny, biogeography and classification of the snake superfamily Elapoidea: a rapid radiation in the late Eocene by Kelly, Christopher M.R, Barker, Nigel P, Villet, Martin H, Broadley, Donald G

“…The snake superfamily Elapoidea presents one of the most intransigent problems in systematics of the Caenophidia. Its monophyly is undisputed and several…”
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Intraspecific mitochondrial gene variation can be as low as that of nuclear rRNA [version 2; peer review: 2 approved] by Matumba, Tshifhiwa G, Oliver, Jody, Barker, Nigel P, McQuaid, Christopher D, Teske, Peter R

“…Background: Mitochondrial DNA (mtDNA) has long been used to date historical demographic events. The idea that it is useful for molecular dating rests on the…”
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Habitat requirements affect genetic variation in three species of mayfly (Ephemeroptera, Baetidae) from South Africa by Taylor, Chantal L., Barker, Nigel P., Barber-James, Helen M., Villet, Martin H., Pereira-da-Conceicoa, Lyndall L.

“…This study investigates genetic diversity in three species of Ephemeroptera, one eurytopic and therefore widespread ( Afroptilum sudafricanum ) and two…”
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Oceanic dispersal barriers, adaptation and larval retention: an interdisciplinary assessment of potential factors maintaining a phylogeographic break between sister lineages of an African prawn by Teske, Peter R, Papadopoulos, Isabelle, Newman, Brent K, Dworschak, Peter C, McQuaid, Christopher D, Barker, Nigel P

“…Genetic breaks separating regional lineages of marine organisms with potentially high broadcasting abilities are generally attributed either to dispersal…”
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Phylogenetic Relationships of "Aristida" and relatives (Poaceae, Aristidoideae) Based on noncoding chloroplast ("trnL-F, rpl16") and nuclear (ITS) DNA sequences by Cerros-Tlatilpa, Rosa, Columbus, J. Travis, Barker, Nigel P.

“…Premise: The cosmopolitan and ecologically important grass subfamily Aristidoideae comprises the widely distributed genus Aristida (250-290 species),…”
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Cryptic variation in an ecological indicator organism: mitochondrial and nuclear DNA sequence data confirm distinct lineages of Baetis harrisoni Barnard (Ephemeroptera: Baetidae) in southern Africa by Pereira-da-Conceicoa, Lyndall L, Price, Benjamin W, Barber-James, Helen M, Barker, Nigel P, de Moor, Ferdy C, Villet, Martin H

“…Baetis harrisoni Barnard is a mayfly frequently encountered in river studies across Africa, but the external morphological features used for identifying nymphs…”
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"Nested" cryptic diversity in a widespread marine ecosystem engineer: a challenge for detecting biological invasions by Teske, Peter R, Rius, Marc, McQuaid, Christopher D, Styan, Craig A, Piggott, Maxine P, Benhissoune, Saïd, Fuentes-Grünewald, Claudio, Walls, Kathy, Page, Mike, Attard, Catherine Rm, Cooke, Georgina M, McClusky, Claire F, Banks, Sam C, Barker, Nigel P, Beheregaray, Luciano B

“…Ecosystem engineers facilitate habitat formation and enhance biodiversity, but when they become invasive, they present a critical threat to native communities…”
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Signatures of seaway closures and founder dispersal in the phylogeny of a circumglobally distributed seahorse lineage by Teske, Peter R, Hamilton, Healy, Matthee, Conrad A, Barker, Nigel P

“…The importance of vicariance events on the establishment of phylogeographic patterns in the marine environment is well documented, and generally accepted as an…”
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Phylogeography of Schotia (Fabaceae): Recent evolutionary processes in an ancient thicket biome lineage by Ramdhani, Syd, Cowling, Richard M, Barker, Nigel P

“…Schotia has a southern African distribution with a strong affinity to the thicket biome and is a potential indicator of thicket biogeography. This study uses…”
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Does polyploidy facilitate long-distance dispersal? by Linder, H. Peter, Barker, Nigel P

“…Background and AimsThe ability of plant lineages to reach all continents contributes substantially to their evolutionary success. This is exemplified by the…”
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Climate change, genetics or human choice: why were the shells of mankind's earliest ornament larger in the pleistocene than in the holocene? by Teske, Peter R, Papadopoulos, Isabelle, McQuaid, Christopher D, Newman, Brent K, Barker, Nigel P

“…The southern African tick shell, Nassarius kraussianus (Dunker, 1846), has been identified as being the earliest known ornamental object used by human beings…”
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Range contraction to a higher elevation: the likely future of the montane vegetation in South Africa and Lesotho by Bentley, Luke K., Robertson, Mark P., Barker, Nigel P.

“…Global climate change is a major challenge for the future with serious potential impacts on biodiversity. Biodiversity in mountains is particularly vulnerable…”
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The Great Escarpment of southern Africa: a new frontier for biodiversity exploration by Clark, V. Ralph, Barker, Nigel P., Mucina, Laco

“…The biodiversity of the 5,000 km-long Great Escarpment of southern Africa is currently poorly known, despite hosting half of the subcontinent’s centres of…”
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Note on the small mammals of small, isolated forest patches in the Eastern Cape, South Africa by Parker, Daniel M., Junkuhn, Kyle, Barker, Nigel P.

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