• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 72
  • 4
  • Tagged with
  • 76
  • 76
  • 76
  • 59
  • 30
  • 20
  • 20
  • 20
  • 18
  • 8
  • 8
  • 7
  • 7
  • 7
  • 7
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

City of Grahamstown proclaimed, June 1812

Skead, C J (Cuthbert John) January 1900 (has links)
Elisabeth Salt Monument or the Settlers Women’s Monument, High Street, Grahamstown, South Africa, commemorating the Xhosa-British battle of 22 April 1819. The monument also marks the spot where, under a tree, Lieutenant Colonel Graham and Captain Stockenstrom decided on the site for Grahamstown. They camped on the land where the cathedral stands today. The town was proclaimed in August 1811 and was named after Colonel John Graham.
12

The old and the new at Seymour

Daily Dispatch (East London, South Africa) 21 July 1960 (has links)
Newspaper article: "The old and the new at Seymour. This oak tree is believed to have been planted in 1853 on the founding of the town. Next to it stand newly planted poles to carry ESCOM electric power to the inhabitants. Gangs of construction workers are erecting the power lines and the first line in the town has about been completed. Private contractors are wiring dwellings. To start with there will be more than 20 consumers who will be connected up to the distribution lines. Distribution will be undertaken by ESCOM.”
13

Araucaria

Skead, C J (Cuthbert John) 06 1900 (has links)
Caption "TW 7. Araucaria tree on West Bank, East London. Visible down the length of Oxford Street. june 1960.”
14

Dead Yellowwood tree

Skead, C J (Cuthbert John) January 1980 (has links)
Caption "Dead yellowwood tree on Lange Vlakte farm, Alexandria, 10 km SW Alexandria town. 1980. The tree had been burnt and killed, apparently by blacks taking honey from its hollow stem. Photo C.J. Skead, 1980."
15

Department of Forestry identification of indigenous species - Hogsback Forest

Skead, C J (Cuthbert John) 10 1900 (has links)
Caption: “TW 5. Dept. of Forestry’s method of identifying trees in Hogsback Forest. Oct. 1955.”
16

Elephant impact on marula trees, and African honeybees as a mitigation method

Cook, Robin Michael January 2017 (has links)
A dissertation submitted to the Faculty of Science, University of the Witwatersrand, in fulfilment of the requirements for the degree of Master of Science, Johannesburg, South Africa 2017 / Concerns exist over the continual decline of marula trees (Sclerocarya birrea subsp. caffra) as a result of African elephant (Loxodonta africana) impact and a lack of recruitment and regeneration. One strategy of protecting adult marula trees is the usage of elephant mitigation methods. This study took place in Jejane Private Nature Reserve (JPNR), a protected area which recently opened up to the Greater Kruger National Park and had not had elephants in over 100 years. The aim of the study was to investigate the changes to the marula population structure in JPNR three years after the migration of elephants to the area due to fence removal, and to test whether African honeybees (Apis mellifera subsp. scutellata) could be used as a mitigation method for elephant impact on marula trees. A previous size-class survey had been done on a sample of JPNR’s marula population in 2009, prior to the fence removal in 2013. A resurvey of these trees was used to assess the elephant-induced impact and mortality levels on the marula trees and to compare these levels to previously recorded impact and mortality levels on marula trees in the Kruger National Park (KNP). Marula seed predation levels and seedling recruitment were also assessed to address recruitment concerns. The resurveyed marula population had declined by 23.8% post-elephant migration, with the highest annual mortality rates (AMR) and impact scores recorded for trees in the 5 - 11 m height classes. Impact scores on marula trees in JPNR were higher than impact scores recorded on KNP marula trees. Only two marula seedlings were found across all transects, with evidence of high seed predation on marula endocarps. JPNR displayed an adult-dominated marula population with a lack of regeneration, possibly due to a lack of fire which has increased available shelter for seed predators such as small mammals. African honeybees were then used to investigate their effectiveness as an elephant mitigation method and to compare this method against wire-netting (a method experimentally used to prevent ring-barking by elephants). Fifty active beehives were hung from 50 marula trees, with another 50 dummy (inactive) beehives hung from branches on the opposite ends of each beehive tree’s main stem. Fifty additional marula trees were wire-netted and a further 50 were used as control trees. Elephant impact on all 150 trees was measured prior to the addition of treatments and post-treatment addition for nine months. 54% of the control trees received some form of elephant impact, in comparison to 28% of the wire-netted trees and only 2% of the beehive trees. Wire-netting protected marula trees against bark-stripping, but did not prevent elephants from breaking branches. Beehives proved highly efficient at mitigating all forms of elephant impact. The financial cost and maintenance required for the beehive mitigation method is greater than that of wire- netting, but the beehives can provide honey and pollination services as an additional benefit. The results of this study illustrate that African honeybees can be used as an effective non-lethal mitigation method for elephant impact on marula trees and are a viable strategy to reduce human-elephant conflict in South Africa’s protected areas. / MT 2017
17

Desecration of trees

Skead, C J (Cuthbert John) 02 1900 (has links)
Caption "Trunk of Acacia karoo, with root exposed by erosion in kloof of Mt. Zebra Nat. Park, Cradock. Feb. 1963.”
18

Acacia robusta - Kei Bridge

Skead, C J (Cuthbert John) 10 1900 (has links)
Caption "Acacia robusta in flower at Kei Bridge. Oct. 1963.”
19

Acacia robusta - Kei Bridge

Skead, C J (Cuthbert John) 10 1900 (has links)
Caption "Acacia robusta in flower at Kei Bridge. Oct. 1963.”
20

Acacia robusta - Kei Bridge

Skead, C J (Cuthbert John) 10 1900 (has links)
Caption "Acacia robusta in flower at Kei Bridge. Oct. 1963.”

Page generated in 0.0302 seconds