cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.5281/zenodo.4636343
title: Melaleuca parvistaminea Hons

description: This project assesses the first invasion of Melaleuca parvistaminea Byrnes (Rough-barked Honey myrtle) anywhere in the world. Initially this serotinous reseeder was identified as Melaleuca ericifolia Sm. (Swamp paperbark), a sister taxon, but examination of morphology and reproductive characters led to revision during this study. While not all areas were searched exhaustively, approximately 13 000 plants were found to be spread over 372 ha (condensed canopy area of ~0.73 ha) at 3 sites between Tulbagh and Wolsley, in the Western Cape. I estimated a further 1334 ha of the Kluitjieskraal plantation and 318 ha of the Kluitjieskraal wetland needs to be surveyed to determine the full extent of the infestation. The population structure indicates considerable spread by seed with at least 63 % of plants being seedling or juvenile. Clearing and fire trigger seed release causing prolific recruitment (up to ~18 000 seedlings/m2) after winter rain. No evidence for a soil stored seed bank was found. Risk assessment shows significant invasive potential, while bioclimatic niche modelling indicates high suitability in the southern Cape region. Plants however only reproduce at 5 years. This water-dispersed species is situated less than 2 km from major river systems, and given its potential to spread, clearing effectiveness thus far and limited distribution I consider eradication a reachable goal that should be desired to maximise time-cost benefits of early eradication. ZAR 1 639 000 is needed for eradication, which can potentially be declared in 2019. I propose listing the species under category 1a in the National Environmental Management: Biodiversity Act and suggest that a detailed assessment of alien Myrtaceae be undertaken in South Africa.
description: Distribution and plant allometric data for BSc Hons
DOI: 10.6084/m9.figshare.14381258.v1
title: BT-474_PC 34_1.txt

description: Tandem MS spectrum of lipid after PB reaction in single cells
DOI: 10.5281/zenodo.4633366
title: Argentine ant baiting data

description: Argentine ants have become a major pest in both agricultural and urban areas across the world. The use of toxic baits has been suggested as a possible method of controlling Argentine ant numbers in these areas. One gel and five granular baits containing hydramethylnon, pyriproxyfen or imidacloprid were tested for toxicity and attractiveness during foraging experiments in the laboratory. Gel baits containing imidacloprid were highly attractive to Argentine ants, but do not effectively reduce colony sizes. Granular baits covered in hydramethylnon were the most effective at reducing colony sizes and were relatively attractive to ants. Formulating sucrose gel baits containing hydramethylnon as active ingredient would capitalise on attractiveness and toxicity.
description: Investigation of the efficacy of commercial toxicants to Argentine ants.
DOI: 10.5281/zenodo.4633365
title: Argentine ant baiting data

description: Argentine ants have become a major pest in both agricultural and urban areas across the world. The use of toxic baits has been suggested as a possible method of controlling Argentine ant numbers in these areas. One gel and five granular baits containing hydramethylnon, pyriproxyfen or imidacloprid were tested for toxicity and attractiveness during foraging experiments in the laboratory. Gel baits containing imidacloprid were highly attractive to Argentine ants, but do not effectively reduce colony sizes. Granular baits covered in hydramethylnon were the most effective at reducing colony sizes and were relatively attractive to ants. Formulating sucrose gel baits containing hydramethylnon as active ingredient would capitalise on attractiveness and toxicity.
description: Investigation of the efficacy of commercial toxicants to Argentine ants.
DOI: 10.6084/m9.figshare.14381258
title: MS raw data of Single-cell Lipidomics with High Structural Specificity by Mass Spectrometry

description: MS raw data of Single-cell Lipidomics with High Structural Specificity by Mass Spectrometry.
DOI: 10.6084/m9.figshare.14381258.v2
title: Lipid C=C locations in single cell

description: Tandem MS spectrum of lipid after PB reaction in single cells
DOI: 10.5281/zenodo.4669282
title: Data for Interpreting 2DCNNs experiments

description: Data set-up needed to run the experiments on interpreting 2d cnns
DOI: 10.5281/zenodo.4669281
title: Data for Interpreting 2DCNNs experiments

description: Data set-up needed to run the experiments on interpreting 2d cnns
DOI: 10.5281/zenodo.4618035
title: Sagartia ornata in the West coast national park

description: Data collected during Cheruscha Swarts honours project
description: In fulfillment of an Honours degree
DOI: 10.5281/zenodo.4618034
title: Sagartia ornata in the West coast national park

description: Data collected during Cheruscha Swarts honours project
description: In fulfillment of an Honours degree
DOI: 10.5281/zenodo.4618016
title: Resource availability as a key driver of Argentine ant, Linepithema humile, invasion success

description: Resource availability has frequently been identified as a key driver for the successful invasion of non-native ants. Essential macronutrients for ant colony survival include protein and carbohydrates. Long term studies have shown that along an ant invasion front, resource use shifts from a protein-rich diet during the establishment phase of the invasion to a carbohydrate dominated diet once colonies have become established. This implies that protein is a key resource for propagule establishment. In contrast, more recently carbohydrate resources obtained from mutualistic associations have been shown to be more effective in facilitating colony establishment. It is important to assess which of the macronutrients propagules prefer and which is possibly important for establishment and how these macronutrients are partitioned between the larvae and the worker and queen castes. Experimental laboratory trials assessed resource preference within the invasive Argentine ant, Linepithema humile, and the degree of resource partitioning between developing larvae and the two female castes using protein marking techniques. Colony survival was also assessed when ants had access to a single macronutrient, namely carbohydrate or protein. Argentine ant propagules showed a preference for carbohydrate resources with high numbers of ants recruited to carbohydrates in comparison to protein resources. Resource partitioning analyses showed a high degree of carbohydrate sharing through trophallaxis whilst protein resources were poorly spread throughout the colony, except for queens which were positive for the uptake of both protein and carbohydrates, suggesting greater consumption of both the macronutrients as compared to developing larvae and workers. Colony mortality did not differ between those maintained on protein or carbohydrate diets. This study provides a strong case for carbohydrate preference within the Argentine ant, suggesting that propagules, during initial establishment, only use protein due to their inability to maintain mutualistic associations with plants or trophobionts until sufficient numeric abundance has been reached.
description: Our main objective is to determine whether incipient Argentine ant, Linepithema humile, colonies prefer protein or feed on protein during initial establishment because they don't have access to carbohydrate rich resources. We aimed to determine this through the use of laboratory experiments. This was accomplished by assessing the effectiveness of a carbohydrate diet, protein diet and a diet containing both macronutrients for sustaining incipient colonies under laboratory conditions, while tracking resource flow within colonies and between castes, using protein marking.
DOI: 10.5281/zenodo.4618015
title: Resource availability as a key driver of Argentine ant, Linepithema humile, invasion success

description: Resource availability has frequently been identified as a key driver for the successful invasion of non-native ants. Essential macronutrients for ant colony survival include protein and carbohydrates. Long term studies have shown that along an ant invasion front, resource use shifts from a protein-rich diet during the establishment phase of the invasion to a carbohydrate dominated diet once colonies have become established. This implies that protein is a key resource for propagule establishment. In contrast, more recently carbohydrate resources obtained from mutualistic associations have been shown to be more effective in facilitating colony establishment. It is important to assess which of the macronutrients propagules prefer and which is possibly important for establishment and how these macronutrients are partitioned between the larvae and the worker and queen castes. Experimental laboratory trials assessed resource preference within the invasive Argentine ant, Linepithema humile, and the degree of resource partitioning between developing larvae and the two female castes using protein marking techniques. Colony survival was also assessed when ants had access to a single macronutrient, namely carbohydrate or protein. Argentine ant propagules showed a preference for carbohydrate resources with high numbers of ants recruited to carbohydrates in comparison to protein resources. Resource partitioning analyses showed a high degree of carbohydrate sharing through trophallaxis whilst protein resources were poorly spread throughout the colony, except for queens which were positive for the uptake of both protein and carbohydrates, suggesting greater consumption of both the macronutrients as compared to developing larvae and workers. Colony mortality did not differ between those maintained on protein or carbohydrate diets. This study provides a strong case for carbohydrate preference within the Argentine ant, suggesting that propagules, during initial establishment, only use protein due to their inability to maintain mutualistic associations with plants or trophobionts until sufficient numeric abundance has been reached.
description: Our main objective is to determine whether incipient Argentine ant, Linepithema humile, colonies prefer protein or feed on protein during initial establishment because they don't have access to carbohydrate rich resources. We aimed to determine this through the use of laboratory experiments. This was accomplished by assessing the effectiveness of a carbohydrate diet, protein diet and a diet containing both macronutrients for sustaining incipient colonies under laboratory conditions, while tracking resource flow within colonies and between castes, using protein marking.
DOI: 10.6084/m9.figshare.14381276
title: Supplementary Material for: Contribution of XPD and XPF Polymorphisms to Susceptibility of Non-Small Cell Lung Cancer in High-Altitude Areas

description: <b><i>Background:</i></b> We aimed to explore the relation of <i>XPD</i> and <i>XPF</i> variants with non-small cell lung cancer (NSCLC) risk and the effect of these variants on the sensitivity to cisplatin-based chemotherapy among the Chinese Han population in high-altitude areas. <b><i>Methods:</i></b> Eight single-nucleotide polymorphisms (SNPs) in <i>XPD</i> and <i>XPF</i> were genotyped by Agena MassARRAY platform among 506 NSCLC cases and 510 healthy controls. Correlation of <i>XPD</i> and <i>XPF</i> gene polymorphisms with NSCLC susceptibility and the response of cis­platin-based chemotherapy were analyzed with logistic regression by calculating odds ratios (ORs) and 95% confidence intervals (CIs). <b><i>Results:</i></b> <i>XPD</i> rs13181 (OR = 1.53, 95% CI: 1.04–2.24, <i>p</i> = 0.029) and rs1052555 (OR = 1.63, 95% CI: 1.05–2.53, <i>p</i> = 0.029) possibly contributed to the increased risk of lung adenocarcinoma, while <i>XPD</i> rs238406 (OR = 0.63, 95% CI: 0.43–0.94, <i>p</i> = 0.024) was a protective factor for lung squamous cell carcinoma. Age, gender, BMI, smoking, and drinking might affect the correlation of <i>XPD</i> and <i>XPF</i> polymorphisms with NSCLC risk. More importantly, <i>XPD</i> rs13181 (OR = 2.91, <i>p</i> = 0.015), <i>XPD</i> rs1052555 (OR = 2.67, <i>p</i> = 0.022), and <i>XPF</i> rs231127 (OR = 4.15, <i>p</i> = 0.008) were associated with treatment response in NSCLC patients underwent cisplatin-based chemotherapy. <b><i>Conclusion:</i></b> This study found that <i>XPD</i> and <i>XPF</i> variants might contribute to NSCLC risk and the response of cisplatin-based chemotherapy among the Chinese Han population in high-altitude areas.
DOI: 10.6084/m9.figshare.14381276.v1
title: Supplementary Material for: Contribution of XPD and XPF Polymorphisms to Susceptibility of Non-Small Cell Lung Cancer in High-Altitude Areas

description: <b><i>Background:</i></b> We aimed to explore the relation of <i>XPD</i> and <i>XPF</i> variants with non-small cell lung cancer (NSCLC) risk and the effect of these variants on the sensitivity to cisplatin-based chemotherapy among the Chinese Han population in high-altitude areas. <b><i>Methods:</i></b> Eight single-nucleotide polymorphisms (SNPs) in <i>XPD</i> and <i>XPF</i> were genotyped by Agena MassARRAY platform among 506 NSCLC cases and 510 healthy controls. Correlation of <i>XPD</i> and <i>XPF</i> gene polymorphisms with NSCLC susceptibility and the response of cis­platin-based chemotherapy were analyzed with logistic regression by calculating odds ratios (ORs) and 95% confidence intervals (CIs). <b><i>Results:</i></b> <i>XPD</i> rs13181 (OR = 1.53, 95% CI: 1.04–2.24, <i>p</i> = 0.029) and rs1052555 (OR = 1.63, 95% CI: 1.05–2.53, <i>p</i> = 0.029) possibly contributed to the increased risk of lung adenocarcinoma, while <i>XPD</i> rs238406 (OR = 0.63, 95% CI: 0.43–0.94, <i>p</i> = 0.024) was a protective factor for lung squamous cell carcinoma. Age, gender, BMI, smoking, and drinking might affect the correlation of <i>XPD</i> and <i>XPF</i> polymorphisms with NSCLC risk. More importantly, <i>XPD</i> rs13181 (OR = 2.91, <i>p</i> = 0.015), <i>XPD</i> rs1052555 (OR = 2.67, <i>p</i> = 0.022), and <i>XPF</i> rs231127 (OR = 4.15, <i>p</i> = 0.008) were associated with treatment response in NSCLC patients underwent cisplatin-based chemotherapy. <b><i>Conclusion:</i></b> This study found that <i>XPD</i> and <i>XPF</i> variants might contribute to NSCLC risk and the response of cisplatin-based chemotherapy among the Chinese Han population in high-altitude areas.
DOI: 10.5281/zenodo.4616775
title: Impacts of Acacia melanoxylon R.Br. (blackwood) on the environmental conditions and phytosociology in forest communities in Harkerville forest, South Africa

description: There have been very few studies on the impacts of Acacia melanoxylon on the environmental conditions in forest communities in South Africa. The aim of this study was to determine the effects of this exotic species on the environmental conditions within forest communities in Harkerville forest, located between Knysna and Plettenberg Bay in South Africa. The effects on the nutrient, moisture and organic content of the soil were studied, as well as the effects on canopy closure and the light penetration to the forest floor. In addition, potential sources of invasion were also identified in the area. It was determined that blackwood did not influence the moisture and organic matter content of the soil, it did however affect the phosphorus and ammonia content. Phosphorus was found to be significantly lower in the vicinity of the blackwood trees. The soil nitrate concentration was significantly higher. Canopy closure was significantly reduced in the invaded areas, which had resulted in a significant increase in light penetration to the forest floor. This was attributed to blackwood's preference for open areas. Major sources of blackwood seed identified in the area, were a very dense stand of blackwood on private land and blackwood plantations in the area. The phytosociology was determined not to be different between the invaded and non-invaded. The study determined that the blackwood altered the tree layer by reducing the number of tree species that comprise the layer. It was concluded that blackwood had minimal impact of the on the environmental conditions measured. Even though the differences in the environmental conditions measured were significant, they were slight. The major issue identified was the dispersal of seeds from nearby sources . Fortunately the seeds do not germinate readily under the closed canopies in the forest. Management and monitoring of blackwood trees is prominent in the area, the adult blackwood trees are ring-barked and the seedlings removed within the vicinity of water courses.
description: Submitted in partial fulfilment of the requirements of the degree of BACCALAUREUS SCIENTIAE HONORES Faculty of Science, Nelson Mandela Metropolitan University, Port Elizabeth
DOI: 10.5281/zenodo.4616774
title: Impacts of Acacia melanoxylon R.Br. (blackwood) on the environmental conditions and phytosociology in forest communities in Harkerville forest, South Africa

description: There have been very few studies on the impacts of Acacia melanoxylon on the environmental conditions in forest communities in South Africa. The aim of this study was to determine the effects of this exotic species on the environmental conditions within forest communities in Harkerville forest, located between Knysna and Plettenberg Bay in South Africa. The effects on the nutrient, moisture and organic content of the soil were studied, as well as the effects on canopy closure and the light penetration to the forest floor. In addition, potential sources of invasion were also identified in the area. It was determined that blackwood did not influence the moisture and organic matter content of the soil, it did however affect the phosphorus and ammonia content. Phosphorus was found to be significantly lower in the vicinity of the blackwood trees. The soil nitrate concentration was significantly higher. Canopy closure was significantly reduced in the invaded areas, which had resulted in a significant increase in light penetration to the forest floor. This was attributed to blackwood's preference for open areas. Major sources of blackwood seed identified in the area, were a very dense stand of blackwood on private land and blackwood plantations in the area. The phytosociology was determined not to be different between the invaded and non-invaded. The study determined that the blackwood altered the tree layer by reducing the number of tree species that comprise the layer. It was concluded that blackwood had minimal impact of the on the environmental conditions measured. Even though the differences in the environmental conditions measured were significant, they were slight. The major issue identified was the dispersal of seeds from nearby sources . Fortunately the seeds do not germinate readily under the closed canopies in the forest. Management and monitoring of blackwood trees is prominent in the area, the adult blackwood trees are ring-barked and the seedlings removed within the vicinity of water courses.
description: Submitted in partial fulfilment of the requirements of the degree of BACCALAUREUS SCIENTIAE HONORES Faculty of Science, Nelson Mandela Metropolitan University, Port Elizabeth
DOI: 10.5281/zenodo.4573361
title: Management consequences after stack burning of invasive alien species (Acacia saligna)

description: Dataset of stack burning data collected at the Blaawuberg Nature Reserve and Glencairn residential area under the manamgenent of the City of Cape Town
description: To investigate the impact of stack burning of invasive alien species, Acacia saligna, on both native and alien vegetation.
DOI: 10.5281/zenodo.4573360
title: Management consequences after stack burning of invasive alien species (Acacia saligna)

description: Dataset of stack burning data collected at the Blaawuberg Nature Reserve and Glencairn residential area under the manamgenent of the City of Cape Town
description: To investigate the impact of stack burning of invasive alien species, Acacia saligna, on both native and alien vegetation.
DOI: 10.5281/zenodo.4569740
title: The impact of pine plantations on fynbos above-ground vegetation and soil seed bank composition

description: Pine plantations and pine invaded areas have numerous impacts on native ecosystems in the fynbos biome of South Africa. The severity of these impacts greatly determines the potential ecosystem recovery that occurs once the pines are felled. The recovery potential of fynbos following the felling of pine plantations of different durations was investigated in the Helderberg Nature Reserve, Western Cape Province, South Africa. Above-ground vegetation, soil seed bank and abiotic variables were sampled across three treatments (reference fynbos, 30 year old pine and 50 year old pine treatments) using 1 m2 quadrats placed along 50 m line transects. The soil seed bank samples were smoke treated and then monitored in a greenhouse to determine the soil seed bank species and growth form composition. Areas previously under 30 year old pine plantations have high native species and growth form richness and density that is similar to the reference fynbos areas. In contrast, areas previously under 50 year old pine plantations have significantly lower native species and growth form richness and density than the reference fynbos treatment. These areas are in turn dominated by alien species. Areas previously under 30 year old pine plantations have high recovery potential following pine removal; in contrast, recovery potential is low for areas previously under 50 year old pine plantations, due to the depleted native soil seed bank. Consequently, active assistance is needed to restore the missing long-lived growth forms and to prevent soil erosion. Pine plantation and invasion management in the fynbos biome should therefore aim to fell pines before the native seed bank is depleted in order to maintain the recovery potential of fynbos and prevent the need for active restoration.
description: The overall aim of this study was to determine what the recovery potential of fynbos is when subjected to extended periods under pine plantations.
DOI: 10.5281/zenodo.4569739
title: The impact of pine plantations on fynbos above-ground vegetation and soil seed bank composition

description: Pine plantations and pine invaded areas have numerous impacts on native ecosystems in the fynbos biome of South Africa. The severity of these impacts greatly determines the potential ecosystem recovery that occurs once the pines are felled. The recovery potential of fynbos following the felling of pine plantations of different durations was investigated in the Helderberg Nature Reserve, Western Cape Province, South Africa. Above-ground vegetation, soil seed bank and abiotic variables were sampled across three treatments (reference fynbos, 30 year old pine and 50 year old pine treatments) using 1 m2 quadrats placed along 50 m line transects. The soil seed bank samples were smoke treated and then monitored in a greenhouse to determine the soil seed bank species and growth form composition. Areas previously under 30 year old pine plantations have high native species and growth form richness and density that is similar to the reference fynbos areas. In contrast, areas previously under 50 year old pine plantations have significantly lower native species and growth form richness and density than the reference fynbos treatment. These areas are in turn dominated by alien species. Areas previously under 30 year old pine plantations have high recovery potential following pine removal; in contrast, recovery potential is low for areas previously under 50 year old pine plantations, due to the depleted native soil seed bank. Consequently, active assistance is needed to restore the missing long-lived growth forms and to prevent soil erosion. Pine plantation and invasion management in the fynbos biome should therefore aim to fell pines before the native seed bank is depleted in order to maintain the recovery potential of fynbos and prevent the need for active restoration.
description: The overall aim of this study was to determine what the recovery potential of fynbos is when subjected to extended periods under pine plantations.