acacia karroo
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Author(s):  
Andrew Tapiwa KUGEDERA ◽  
Letticia KOKERAİ ◽  
Lawrence MANGO
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2021 ◽  
pp. 1-8
Author(s):  
Rangarirai Huruba ◽  
Caroline Ndlovu ◽  
Peter J. Mundy ◽  
Allan Sebata ◽  
Duncan N. MacFadyen

Abstract Elephants are attracted to nutrient hotspots created through short duration overnight cattle corralling (hereafter kraaling) in natural rangelands at Debshan, a mixed cattle-wildlife private ranch in central Zimbabwe, causing severe tree damage. We determined the effect of age of nutrient hotspot (i.e., time after kraal use) on elephant use and the extent of tree damage. Elephant use and tree damage were assessed in nutrient hotspots of varying ages (6, 12, 24, 36 and 48 months after kraal use) and in surrounding landscape. We also compared Acacia karroo bark nutrient and soil nutrient concentration between nutrient hotspots (24 months after kraal use) and the surrounding landscape. Elephant use of nutrient hotspots was highest at 12 and 24 months after kraaling. The most severely damaged trees were in the 12-, 24- and 36-month-old nutrient hotspots. Acacia karroo bark nutrient concentrations (nitrogen, potassium, calcium, magnesium and iron) were higher in nutrient hotspots than surrounding vegetation, while soil nutrients (nitrogen, phosphorus, calcium and potassium) were higher in nutrient hotspots than surrounding landscape. We concluded that elephants mostly used nutrient hotspots 12 and 24 months after kraaling, while severe tree damage occurred 12, 24 and 36 months after kraal use.


2019 ◽  
Vol 38 ◽  
pp. 009 ◽  
Author(s):  
R. Senar ◽  
S. Cardero

Con las observaciones de los últimos años en el este de la península ibérica (concretamente en Cataluña, País Valenciano y la provincia de Teruel), se aportan un conjunto de datos corológicos de 41 plantas alóctonas naturalizadas u ocasionales. Cabe destacar Annona cherimola y Manihot grahamii que se citan por primera vez en la flora ibérica; Echinopsis pachanoi y Hydrocotyle verticillata para Cataluña; Solandra maxima en el País Valenciano. Se tiene que excluir Opuntia pestifer de la flora valenciana, ya que se confirma que las citas anteriores corresponden a Opuntia aurantiaca. Además, se aportan nuevas localidades de Acacia karroo, Cylindropuntia kleiniae, Euphorbia tirucalli, Leucaena leucocephala, Lophocereus marginatus, Nicandra physalodes, Pelargonium inquinans, Physalis peruviana, Podranea ricasoliana, Sedum pachyphyllum, Senna corymbosa, Tradescantia pallida y Tradescantia sillamontana, táxones interesantes y poco conocidos en la flora alóctona del este ibérico. [ca] Amb les observacions dels darrers anys fetes a l’est de la península Ibèrica (concretament a Catalunya, País Valencià i la província de Terol), s’aporten un conjunt de dades corològiques de 41 plantes al·lòctones naturalitzades o ocasionals. Cal destacar Annona cherimola i Manihot grahamii que es citen per primera vegada a la flora ibèrica; Echinopsis pachanoi i Hydrocotyle verticillata per a Catalunya; Solandra maxima per al País Valencià. Cal excloure Opuntia pestifer de la flora valenciana, ja que es confirma que les cites anteriors corresponen a Opuntia aurantiaca. A més a més, s’aporten noves localitats de Acacia karroo, Cylindropuntia kleiniae, Euphorbia tirucalli, Leucaena leucocephala, Lophocereus marginatus, Nicandra physalodes, Pelargonium inquinans, Physalis peruviana, Podranea ricasoliana, Sedum pachyphyllum, Senna corymbosa, Tradescantia pallida i Tradescantia sillamontana, tàxons interessants i poc coneguts a la flora al·lòctona de l’est ibèric.


Author(s):  
Idris Njanje ◽  
Victor P. Bagla ◽  
Brian K. Beseni ◽  
Vusi Mbazima ◽  
Kgomotso W. Lebogo ◽  
...  
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