U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

PubAg

Main content area

You searched for: Publication Year 2014 Remove constraint Publication Year: 2014 Subject Combretum Remove constraint Subject: Combretum Text Availability Citation in PubAg Remove constraint Text Availability: Citation in PubAg
Start Over

Search

23  Search Results

« Previous | 1 - 20 of 23 |
Number of results to display per page

Search Results

1. Allometric models for aboveground biomass in dry savanna trees of the Sudan and Sudan-Guinean ecosystems of Southern Senegal

Author:
Cheikh Mbow; Michel M. Verstraete; Bienvenu Sambou; Amadou Tahirou Diaw; Henry Neufeldt
Source:
Journal of forest research 2014 v.19 no.3 pp. 340-347
ISSN:
1610-7403
Subject:
Acacia; Combretum; Terminalia; aboveground biomass; ecosystems; forests; regression analysis; savannas; statistical models; tree and stand measurements; trees; Senegal; Sudan
Abstract:
... This paper presents new allometric models for woody savanna of the dry Sudanian zone of the southern part of Senegal and contributes to the needs for accurate and precise carbon estimates through improved statistical models and methods. The results are based on statistical relationships between the total dry biomass and either tree diameter at breast height (DBH) or tree height for a set of 101 in ...
DOI:
10.1007/s10310-013-0414-1

2. Calibration of a hand-held instrument for measuring condensed tannin concentration based on UV- and red-excited fluorescence

Author:
Peter Scogings; Sithembile Siko; Robert Taylor
Source:
African journal of range & forage science 2014 v.31 no.1 pp. 55-58
ISSN:
1727-9380
Subject:
Acacia; Combretum; Euclea; Senegalia; Sorghum (Poaceae); Spirostachys africana; biochemical polymorphism; chemistry; cost effectiveness; crops; flavonols; fluorescence; forage and feed science; herbivores; leaves; national parks; nondestructive methods; proanthocyanidins; regression analysis; ultraviolet radiation; woody plants
Abstract:
... Condensed tannins are ecologically important compounds in plants for several reasons, e.g. as herbivore deterrents or protecting photosynthetic tissues against ultraviolet radiation. The hand-held Dualex Series 4 instrument was originally developed for indirect determination of flavonol concentrations in crops. Flavonols are low-molecular-weight phenolics from which condensed tannins are synthesis ...
DOI:
10.2989/10220119.2013.858772

3. Dendrochronological Potential and Productivity of Tropical Tree Species in Western Kenya

Author:
David Eric T.; Chhin Sophan; Skole David
Source:
Tree-ring research 2014 v.70 no.2 pp. 119-135
ISSN:
1536-1098
Subject:
Acacia mearnsii; Bridelia; Combretum; Croton macrostachyus; Cupressus lusitanica; Eucalyptus camaldulensis; Eucalyptus grandis; Eucalyptus saligna; Grevillea robusta; Mangifera indica; Syzygium cumini; aboveground biomass; atmospheric precipitation; carbon; dendrochronology; growth rings; introduced species; tree growth; trees; variance; Kenya
Abstract:
... This study focuses on tropical tree growth rates in Western Kenya. The dendrochronological potential of each study species was determined by visual examination of rings, and then cumulative growth trajectories for diameter were synthesized for species of sufficient sample size (n ≥ 3), based on ring-width chronologies. The 14 tree species considered were: Acacia mearnsii, Bridelia micrantha, Combr ...
DOI:
10.3959/1536-1098-70.2.119

4. Diversity, abundance and distribution of lianas of the Cerrado–Amazonian forest transition, Brazil

Author:
Edmar Almeida de Oliveira; Beatriz Schwantes Marimon; Ted R. Feldpausch; Guarino Rinaldi Colli; Ben Hur Marimon-Junior; Jon Lloyd; Eddie Lenza; Leandro Maracahipes; Claudinei Oliveira-Santos; Oliver L. Phillips
Source:
Plant ecology & diversity 2014 v.7 no.1-2 pp. 231-240
ISSN:
1755-1668
Subject:
Combretum; cerrado; lianas; species diversity; stems; tropical forests; woodlands; Brazil
Abstract:
... Background: Lianas strongly influence tropical forest dynamics and diversity. Aims: To determine the relationship among richness, diversity, abundance and distribution of liana species in different vegetation formation types along a gradient within a savanna–forest transition zone in central Brazil. Methods: All liana species were identified and their girth measurements (≥5 cm) taken in one 1 ha p ...
DOI:
10.1080/17550874.2013.816799

5. Effect of offering a multiple choice among Brazilian woody plants on intake and feeding behavior of experienced and inexperienced Santa Inês lambs

Author:
J.S. Meier; A.L. Abdalla; V. Rodrigues Vasconcelos; M. Kreuzer; S. Marquardt
Source:
Small ruminant research 2014 v.121 no.2-3 pp. 271-279
ISSN:
0921-4488
Subject:
Attalea speciosa; Cenostigma; Combretum; Cynodon dactylon; Trema; body weight; branches; choice feeding; diet; feed intake; feeding behavior; feeds; forage; hay; lambs; leaves; statistical models; woody plants; Brazil
Abstract:
... The aim of the study was to investigate whether a diversity of woody feeds on offer, containing different phenolic amounts, and previous experience with the feeds have an effect on feed intake and feeding behavior of growing lambs. A choice feeding experiment was conducted in Northeastern Brazil (Teresina, Piauí) using chopped leaves and small twigs from five different woody plants (Cenostigma mac ...
DOI:
10.1016/j.smallrumres.2014.07.004

6. Fire can suppress the development of macrophyllous thickets

Author:
Paul Gordijn; David Ward
Source:
African journal of range & forage science 2014 v.31 no.2 pp. 147-160
ISSN:
1727-9380
Subject:
Acacia karroo; Combretum; Dichrostachys cinerea; Vachellia; botanical composition; conservation areas; forage and feed science; grasslands; herbivores; multivariate analysis; savannas; shrubs; woodlands; woody plants; South Africa
Abstract:
... The ingression of woody plants into savannas, known as bush or shrub encroachment, has become a global concern. Fire has been acknowledged as a key factor in managing woody vegetation in savannas. This study assessed the role of fire in determining the total density, structure and composition of woody vegetation in Ithala Game Reserve, northern KwaZulu-Natal, South Africa. We surveyed woody vegeta ...
DOI:
10.2989/10220119.2013.827587

7. Growth and fuelwood properties of five tree and shrub species in the Sahelian and Sudanian ecozones of Mali: relationships with mean annual rainfall and geographical coordinates

Author:
Carmen Sotelo Montes; John C. Weber; Dimas A. Silva; Clarice Andrade; Graciela I. B. Muñiz; Rosilei A. Garcia; Antoine Kalinganire
Source:
New forests 2014 v.45 no.2 pp. 179-197
ISSN:
0169-4286
Subject:
Balanites aegyptiacus; Combretum; ecological zones; energy content; linear models; tree growth; shrubs; tree age; fuelwood; trees; ash content; rain; water content; Ziziphus mauritiana; wet season; climate; Mali
Abstract:
... In the Sahelian and Sudanian ecozones of West Africa, the rainy season lasts only 3–4 months per year, there are steep rainfall gradients with latitude and longitude, the climate is becoming increasingly hotter and drier with more variable rainfall, some fuelwood species are disappearing locally, demand for fuelwood is increasing, and we expect that fuelwood production will be increasingly limited ...
DOI:
10.1007/s11056-013-9401-9

8. Hyaluronidase, phospholipase A2 and protease inhibitory activity of plants used in traditional treatment of snakebite-induced tissue necrosis in Mali, DR Congo and South Africa

Author:
Marianne Molander; Line Nielsen; Søren Søgaard; Dan Staerk; Nina Rønsted; Drissa Diallo; Kusamba Zacharie Chifundera; Johannes van Staden; Anna K. Jäger
Source:
Journal of ethnopharmacology 2014 v.157 pp. 171-180
ISSN:
0378-8741
Subject:
Bauhinia thonningii; Bitis arietans; Combretum; Grewia mollis; Lannea; Naja; Strychnos; active ingredients; antiserum; bioassays; enzyme inhibition; enzyme inhibitors; ethanol; hyaluronoglucosaminidase; inhibitory concentration 50; mortality; necrosis; patients; phospholipase A2; plant anatomy; polyphenols; proteinases; snake bites; snakes; traditional medicine; Democratic Republic of the Congo; Mali; South Africa
Abstract:
... Snakebite envenomation, every year, causes estimated 5–10,000 mortalities and results in more than 5–15,000 amputations in sub-Saharan Africa alone. Antiserum is not easily accessible in these regions or doctors are simply not available, thus more than 80% of all patients seek traditional practitioners as first-choice. Therefore it is important to investigate whether the plants used in traditional ...
DOI:
10.1016/j.jep.2014.09.027

9. In vitro antiplasmodial activity of some medicinal plants of Burkina Faso

Author:
Lamoussa Paul Ouattara; Souleymane Sanon; Valérie Mahiou-Leddet; Adama Gansané; Béatrice Baghdikian; Abdoulaye Traoré; Issa Nébié; Alfred S. Traoré; Nadine Azas; Evelyne Ollivier; Sodiomon Bienvenu Sirima
Source:
Parasitology research 2014 v.113 no.1 pp. 405-416
ISSN:
0932-0113
Subject:
Acacia; Chinese hamsters; Combretum; Plasmodium falciparum; Terminalia; alkaloids; animal ovaries; antioxidant activity; drug resistance; drugs; ellagic acid; inhibitory concentration 50; leaf extracts; leaves; malaria; medicinal plants; public health; traditional medicine; Burkina Faso
Abstract:
... Malaria remains a major public health problem due to the emergence and spread of Plasmodium falciparum drug resistance. There is an urgent need to investigate new sources of antimalarial drugs which are more effective against Plasmodium falciparum. One of the potential sources of antimalarial drugs is traditional medicinal plants. In this work, we studied the in vitro antiplasmodial activity of ch ...
DOI:
10.1007/s00436-013-3669-8
PubMed:
24318747

10. Large herbivores and season independently affect woody stem circumference increment in a semi-arid African savanna

Author:
Peter F. Scogings
Source:
Plant ecology 2014 v.215 no.12 pp. 1433-1443
ISSN:
1385-0237
Subject:
Combretum; Dichrostachys cinerea; Elephantidae; Euclea; Grewia; Vachellia exuvialis; browsing; dendrometers; dry season; herbivores; hydrology; national parks; savannas; stem elongation; survival rate; wet season; woody plants; South Africa
Abstract:
... Seasonality is a characteristic feature of savannas. Assuming plants are dormant in the dry season, long-term browsing by large herbivores (or their exclusion) in savannas should affect stem growth in the wet season alone. In addition, plant survival should improve with exclusion. A total of 236 dendrometers on six woody species in three large (>25 ha) plots (all large herbivores excluded, elephan ...
DOI:
10.1007/s11258-014-0400-5

11. A New Chalcone Glycoside from Combretum griffithii

Author:
Liqin Wang; Mingmei Wu; Jihua Wang; Jinhe Jiang; Yegao Chen; Ting Li
Source:
Chemistry of natural compounds 2014 v.50 no.2 pp. 258-260
ISSN:
0009-3130
Subject:
Combretum; beta-sitosterol; betulin; chalcone; epigallocatechin; glycerol; glycosides; oleanolic acid
Abstract:
... A new chalcone glycoside, 2′,4,4′,6′-tetrahydroxydihydrochalcone 2′-O-α-L-rhamnopyranosyl-(1 → 6)-β-Dglucopyranoside (1), was isolated from Combretum griffithii Huerck et M.-A. along with the known compounds (–)-epigallocatechin (2), 3′-O-methyl-(–)-epicatechin (3), (–)-4′-O-methyl epigallocatechin (4), (–)-epicatechin (5), (+)-catechin (6), betulin (7), maslinic acid (8), oleanolic acid (9), arju ...
DOI:
10.1007/s10600-014-0926-8

12. Notes on African Combretum Loefl. species (Combretaceae)

Author:
Jongkind Carel C. H.
Source:
Adansonia 2014 v.36 no.2 pp. 315-327
ISSN:
1280-8571
Subject:
Combretum; flowers; leaves; lectotypes; neotypes; new combination; new species; Madagascar
Abstract:
... A new species, new combinations, synonyms, lectotypes and neotypes for Combretum Loefl. (Combretaceae) from continental African and Madagascar are published. Especially the lumping of Combretum platypetalum Welw. ex M.A.Lawson with the older Combretum sericeum G.Don is an important change. Combretum gordonii Jongkind, sp. nov. is newly described, no Combretum species with densely hairy and more or ...
DOI:
10.5252/a2014n2a11

13. Photosynthetic and morphological acclimation of seedlings of tropical lianas to changes in the light environment

Author:
Gerardo Avalos; Stephen S. Mulkey
Source:
American journal of botany 2014 v.101 no.12 pp. 2088-2096
ISSN:
0002-9122
Subject:
Combretum; Stigmaphyllon; acclimation; adults; biomass; canopy; dry matter partitioning; forests; leaves; lianas; life history; photochemistry; photosynthesis; seedlings
Abstract:
... • Premise of the study: Few studies have analyzed the physiological performance of different life stages and the expression of ontogenetic niche shifts in lianas. Here, we analyzed the photosynthetic and morphological acclimation of seedlings of Stigmaphyllon lindenianum, Combretum fruticosum, and Bonamia trichantha to distinctive light conditions in a tropical dry forest and compared their respon ...
DOI:
10.3732/ajb.1400127
PubMed:
25480706

14. Phytochemical study and antinociceptive effect of the hexanic extract of leaves from Combretum duarteanum and friedelin, a triterpene isolated from the hexanic extract, in orofacial nociceptive protocols

Author:
Jullyana S.S. Quintans; Emmanoel V. Costa; Josean F. Tavares; Thais T. Souza; Silvan S. Araújo; Charles S. Estevam; Andersson Barison; Analúcia G.S. Cabral; Marcelo S. Silva; Mairim R. Serafini; Lucindo J. Quintans-Júnior
Source:
Revista Brasileira de Farmacognosia 2014 v.24 no.1 pp. 60-66
ISSN:
0102-695X
Subject:
Combretum; analgesic effect; chromatography; leaves; males; mice; models; morphine; nociception; pain; pain tests; stems; traditional medicine; triterpenoids; Brazil
Abstract:
... Combretum duarteanum Cambess, Combretaceae, is a plant widely distributed in Northeastern Brazil and, in folk medicine, stems and leaves are used for pain treatment. We investigated the antinociceptive effects of the hexanic extract of leaves from C. duarteanum and of friedelin, its main compound, in formalin-, glutamate- and capsaicin- induced orofacial nociception models. In order to isolate fri ...
DOI:
10.1590/0102-695X20142413347

15. Phytotoxicity evaluation of six fast-growing tree species in South Africa

Author:
T.O. Sunmonu; J. Van Staden
Source:
South African journal of botany 2014 v.90 pp. 101-106
ISSN:
0254-6299
Subject:
plumule; Buddleja; agroforestry; Lactuca sativa; lipid peroxidation; seedlings; trees; Combretum; malondialdehyde; Vachellia; peroxidase; germination; superoxide dismutase; bioassays; weeds; lettuce; leaf extracts; catalase; phytotoxicity; Albizia adianthifolia; Rapanea; chlorophyll; growth chambers; crops; South Africa
Abstract:
... Vachellia sieberiana, Albizia adianthifolia, Buddleja saligna, Combretum kraussii, Halleria lucida and Rapanea melanophloeos are fast-growing, indigenous tree species in South Africa. They are usually found growing alongside other plants in agricultural systems. In this study, the comparative phytotoxic activity of aqueous leaf extracts of these tree species at different concentrations was investi ...
DOI:
10.1016/j.sajb.2013.10.010

16. Polarity of extracts and fractions of four Combretum (Combretaceae) species used to treat infections and gastrointestinal disorders in southern African traditional medicine has a major effect on different relevant in vitro activities

Author:
Aroke S. Ahmed; Lyndy J. McGaw; Esameldin E. Elgorashi; Vinasan Naidoo; Jacobus N. Eloff
Source:
Journal of ethnopharmacology 2014 v.154 no.2 pp. 339-350
ISSN:
0378-8741
Subject:
lipid peroxidation; 2,2-diphenyl-1-picrylhydrazyl; animal production; median effective concentration; Combretum; acetone; infectious diseases; linoleic acid; diarrhea; methylene chloride; hydrochloric acid; hexane; ethyl acetate; butanol; enzyme inhibition; phytopharmaceuticals; antifungal properties; traditional medicine; minimum inhibitory concentration; cytotoxicity; linoleate 13S-lipoxygenase; antioxidant activity; antioxidants; ascorbic acid; antibacterial properties; leaf extracts; fractionation; prostaglandin synthase; anti-infective agents; fungi; Asia; Africa
Abstract:
... Gastrointestinal disorders and infections are the major pathoaetiologies of diarrhoea causing many problems in human health and animal production. Many Combretum species are used in traditional medicine to treat infectious diseases including diarrhoea and many other ailments by rural people in Africa and Asia. Much of the work done to date on this genus was on the non-polar or intermediate polarit ...
DOI:
10.1016/j.jep.2014.03.030

17. Pollen content of marmeleiro (Croton spp., Euphorbiaceae) honey from Piauí State, Brazil

Author:
Ricardo Landim Bormann de Borges; Marcel Carvalho de Jesus; Ricardo Costa Rodrigues de Camargo; Francisco de Assis Ribeiro dos Santos
Source:
Palynology 2014 v.38 no.2 pp. 179-194
ISSN:
1558-9188
Subject:
Combretum; Croton; Mimosa caesalpiniifolia; Mitracarpus; Myrtaceae; Spermacoce; alcohols; beekeepers; cluster analysis; honey; nectar; pollen; semiarid zones; vegetation types; Brazil
Abstract:
... Samples of honey, called marmeleiro honey by its producers, from the state of Piauí, Brazil, were analysed to study their pollen contents. Samples were dissolved in water, alcohol was added to the solution and the samples were subjected to acetolysis. The absolute concentration of pollen grains in the samples was established using an exotic marker. Multivariate cluster analysis was performed to de ...
DOI:
10.1080/01916122.2014.880077

18. Spectrum of plant species foraged by Apis mellifera adansonii Latreille in the North Sudanian phytogeographical region of Burkina Faso

Author:
Paul Schweitzer; Issa Nombré; Aidoo Kwame; Joseph Issaka Boussim
Source:
Grana 2014 v.53 no.1 pp. 62-68
ISSN:
1651-2049
Subject:
Acacia; Anacardiaceae; Apis mellifera adansonii; Cleome viscosa; Combretum; Cyperus esculentus; Tridax procumbens; foraging; honey; honey bees; phytogeography; pollen; Burkina Faso
Abstract:
... Melissopalynological analysis of 60 honey samples collected from 50 Kenyan Top Bar Hives in the North Sudanian phytogeographical region of Burkina Faso established the plant species foraged by honeybees Apis mellifera adansonii . Forty-three pollen types from 29 families were identified in the honey samples. The most common families were Mimosaceae (9.30%), Asteraceae (6.98%) and Anacardiaceae (6. ...
DOI:
10.1080/00173134.2013.853830

19. Tannin content of leaf extracts of 53 trees used traditionally to treat diarrhoea is an important criterion in selecting species for further work

Author:
G. Würger; L.J. McGaw; J.N. Eloff
Source:
South African journal of botany 2014 v.90 pp. 114-117
ISSN:
0254-6299
Subject:
Combretum; Euphorbiaceae; Fabaceae; Sclerocarya birrea; acetone; adverse effects; agar; animal production; anti-infective properties; antidiarrheal effect; bovine serum albumin; dysentery; gallic acid; humans; industry; leaf extracts; leaves; pathogens; tannins; traditional medicine; trees; Southern Africa
Abstract:
... In southern Africa many plant species are used to treat different ailments and diseases related to infections. Diarrhoea is not only an important disease of humans but also causes large losses in the animal production industry. The antimicrobial activity of many of these species may however, be based on their tannin content. Even though high tannin content may be therapeutically effective against ...
DOI:
10.1016/j.sajb.2013.11.003

20. Termitaria as preferred browsing patches for black rhinoceros (Diceros bicornis) in Chipinge Safari Area, Zimbabwe

Author:
Justice Muvengwi; Hilton G. T. Ndagurwa; Tatenda Nyenda; Innocent Mlambo
Source:
Journal of tropical ecology 2014 v.30 no.6 pp. 591-598
ISSN:
1469-7831
Subject:
nutrient content; trees; nutrients; phosphorus; Combretum; Diceros bicornis; Strychnos; forage; sodium; browsing; termite mounds; calcium; soil; Diospyros; potassium; species diversity; Kigelia africana; canopy; soil nutrients; nitrogen; stand basal area; vegetation; Zimbabwe
Abstract:
... This study tested the hypothesis that the black rhinoceros browses more on termitaria than off termitaria vegetation due to elevated soil and foliar nutrient levels on termitaria. We investigated the role of termitaria in providing nutrient-rich forage for the black rhinoceros, by comparing the preference (selection ratio) for vegetation occurring on and off termitaria, and then testing its relati ...
DOI:
10.1017/S0266467414000480