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Papers by Graeme La Cock

tinctoria): biology, ecology and conservation impacts

Science for Conservation presents the results of investigations by DOC staff, and by contracted s... more Science for Conservation presents the results of investigations by DOC staff, and by contracted science providers outside the Department of Conservation. Publications in this series are internally and externally peer reviewed.

Contact: epress@unitec.ac.nz www.unitec.ac.nz/epress/ Unitec Institute of Technology Private Bag ... more Contact: epress@unitec.ac.nz www.unitec.ac.nz/epress/ Unitec Institute of Technology Private Bag 92025, Victoria Street West Auckland 1142 New Zealand

South African Journal of Botany, 1992

Damage to trees caused by bark collecting in Afromontane forest at the Tootabie Nature Reserve in... more Damage to trees caused by bark collecting in Afromontane forest at the Tootabie Nature Reserve in the eastern Cape Province of South Africa, was investigated along transects perpendicular and parallel to a road passing through the Reserve. All recent collecting occurred at a concealed lay-by, with very little damage at sites away from it. Sixty-three percent of all tree stems at the lay-by survey sites had been damaged, and 23% of all were ring-barked. These ring-barked stems are likely to die within one or two years of this study, thereby altering the structure of the forest. All debarking of stems in some previously unutilized areas was fresh, with stems showing no sign of healing or rotting. There was no significant difference in the number of large and small stems utilized. The results are discussed with reference to recent trends in bark-collecting and marketing. Die verwydering van boombas is in 'n Afromontaan-woud by die Tootabie Natuuneservaat in die Oos-Kaap, Suid-Afrika, ondersoek. Die ondersoek is gedoen langs transekte loodreg en parallel aan 'n pad wat deur die reseNaat loop. Meeste onlangse basversameling is gedoen rondom 'n versteekte afrit, met min skade verder daaNandaan. Drie-en-sestig persent van al die bome in die loodregte transek by die afrit is beskadig en 23% is geringbas. Daar kan verwag word dat hierdie bome binne een of twee jaar sal doodgaan, wat sal veroorsaak dat die struktuur van die woud sal verander. In gebiede wat voorheen onbenut was, is die basverwydering vars, en stamme het geen teken van heling of verrotting getoon nie. Daar was geen betekenisvolle verskil in die getal groot en klein stamme wat benut is nie. Die resultate word bespreek met verwysing na onlangse neigings van basversameling en-bemarking .

Journal of Field Ornithology

Journal of Field Ornithology

DOC Research & Development Series is a published record of scientific research carried out, or ad... more DOC Research & Development Series is a published record of scientific research carried out, or advice given, by Department of Conservation staff or external contractors funded by DOC. It comprises reports and short communications that are peer-reviewed. Individual contributions to the series are first released on the departmental website in pdf form. Hardcopy is printed, bound, and distributed at regular intervals. Titles are also listed in our catalogue on the website, refer www.doc.govt.nz under Publications, then Science and research.

African Journal of Wildlife Research

Three black rhinoceroses were translocated from Natal to the Eastern Cape. Food acceptability tri... more Three black rhinoceroses were translocated from Natal to the Eastern Cape. Food acceptability trials were undertaken because many plants eaten by black rhinoceroses in Natal do not occur in the Eastern Cape. Such information is valuable to ensure that translocated rhinoceroses are kept healthy prior to release which may help decrease post-release mortalities. Twelve tree and shrub species were used in the trial - mean mass (wet) of ingested food was about 38 kg / day / rhinoceros. Most woody plants were eaten but not succulents. Animals were in good health when released. It is suggested that, while in bomas, black rhinoceroses be given at least 40-45 kg / day of food comprising a wide range of indigenous plants. Drie swart renosters vanuit Natal is in die Oos-Kaap hervestig. Voedselvoorkeurproewe is onderneem weens die feit dat baie plante wat deur swart renosters in Natal gevreet word, nie in die Oos-Kaap voorkom nie. Sulke inligting is waardevol om te verseker dat die verplaasde renosters gesond bly tydens aanhouding en om mortaliteite na vrylating te help verminder. Twaalf boom- en struikspesies is in die proef ingesluit en die gemiddelde massa van voedselinname was ongeveer 38 kg / dag / renoster. Houterige plante is gevreet terwyl vetplante nie gevreet is nie. Die renosters is in goeie gesondheid vrygelaat. Daar word voorgestel dat swart renosters ten minste 40-45 kg / dag gevoer word bestaande uit 'n bree spektrum inheemse plante terwyl hulle in aanhouding is.

Journal of Coastal Research

tinctoria): biology, ecology and conservation impacts

Science for Conservation presents the results of investigations by DOC staff, and by contracted s... more Science for Conservation presents the results of investigations by DOC staff, and by contracted science providers outside the Department of Conservation. Publications in this series are internally and externally peer reviewed.

Contact: epress@unitec.ac.nz www.unitec.ac.nz/epress/ Unitec Institute of Technology Private Bag ... more Contact: epress@unitec.ac.nz www.unitec.ac.nz/epress/ Unitec Institute of Technology Private Bag 92025, Victoria Street West Auckland 1142 New Zealand

South African Journal of Botany, 1992

Damage to trees caused by bark collecting in Afromontane forest at the Tootabie Nature Reserve in... more Damage to trees caused by bark collecting in Afromontane forest at the Tootabie Nature Reserve in the eastern Cape Province of South Africa, was investigated along transects perpendicular and parallel to a road passing through the Reserve. All recent collecting occurred at a concealed lay-by, with very little damage at sites away from it. Sixty-three percent of all tree stems at the lay-by survey sites had been damaged, and 23% of all were ring-barked. These ring-barked stems are likely to die within one or two years of this study, thereby altering the structure of the forest. All debarking of stems in some previously unutilized areas was fresh, with stems showing no sign of healing or rotting. There was no significant difference in the number of large and small stems utilized. The results are discussed with reference to recent trends in bark-collecting and marketing. Die verwydering van boombas is in 'n Afromontaan-woud by die Tootabie Natuuneservaat in die Oos-Kaap, Suid-Afrika, ondersoek. Die ondersoek is gedoen langs transekte loodreg en parallel aan 'n pad wat deur die reseNaat loop. Meeste onlangse basversameling is gedoen rondom 'n versteekte afrit, met min skade verder daaNandaan. Drie-en-sestig persent van al die bome in die loodregte transek by die afrit is beskadig en 23% is geringbas. Daar kan verwag word dat hierdie bome binne een of twee jaar sal doodgaan, wat sal veroorsaak dat die struktuur van die woud sal verander. In gebiede wat voorheen onbenut was, is die basverwydering vars, en stamme het geen teken van heling of verrotting getoon nie. Daar was geen betekenisvolle verskil in die getal groot en klein stamme wat benut is nie. Die resultate word bespreek met verwysing na onlangse neigings van basversameling en-bemarking .

Journal of Field Ornithology

Journal of Field Ornithology

DOC Research & Development Series is a published record of scientific research carried out, or ad... more DOC Research & Development Series is a published record of scientific research carried out, or advice given, by Department of Conservation staff or external contractors funded by DOC. It comprises reports and short communications that are peer-reviewed. Individual contributions to the series are first released on the departmental website in pdf form. Hardcopy is printed, bound, and distributed at regular intervals. Titles are also listed in our catalogue on the website, refer www.doc.govt.nz under Publications, then Science and research.

African Journal of Wildlife Research

Three black rhinoceroses were translocated from Natal to the Eastern Cape. Food acceptability tri... more Three black rhinoceroses were translocated from Natal to the Eastern Cape. Food acceptability trials were undertaken because many plants eaten by black rhinoceroses in Natal do not occur in the Eastern Cape. Such information is valuable to ensure that translocated rhinoceroses are kept healthy prior to release which may help decrease post-release mortalities. Twelve tree and shrub species were used in the trial - mean mass (wet) of ingested food was about 38 kg / day / rhinoceros. Most woody plants were eaten but not succulents. Animals were in good health when released. It is suggested that, while in bomas, black rhinoceroses be given at least 40-45 kg / day of food comprising a wide range of indigenous plants. Drie swart renosters vanuit Natal is in die Oos-Kaap hervestig. Voedselvoorkeurproewe is onderneem weens die feit dat baie plante wat deur swart renosters in Natal gevreet word, nie in die Oos-Kaap voorkom nie. Sulke inligting is waardevol om te verseker dat die verplaasde renosters gesond bly tydens aanhouding en om mortaliteite na vrylating te help verminder. Twaalf boom- en struikspesies is in die proef ingesluit en die gemiddelde massa van voedselinname was ongeveer 38 kg / dag / renoster. Houterige plante is gevreet terwyl vetplante nie gevreet is nie. Die renosters is in goeie gesondheid vrygelaat. Daar word voorgestel dat swart renosters ten minste 40-45 kg / dag gevoer word bestaande uit 'n bree spektrum inheemse plante terwyl hulle in aanhouding is.

Journal of Coastal Research

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