Kingsley Dixon

Kingsley Dixon
Curtin University · School of Molecular and Life Sciences

About

256
Publications
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Publications

Publications (256)
Article
Full-text available
Invertebrates are important for restoration processes as they are key drivers of many landscape-scale ecosystem functions; including pollination, nutrient cycling and soil formation. However, invertebrates are often overlooked in restoration monitoring because they are highly diverse, poorly described, and time-consuming to survey, and require incr...
Article
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Background and aims Mine tailings are challenging substrates for ecological restoration, as the establishment of diverse native plant communities can be constrained by a range of edaphic factors. Thus, the ability to restore native vegetation communities will depend upon developing a clear evidence-base as to what types of species and communities a...
Article
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Aims Understanding limitations to plant recruitment is a key element in devising effective restoration of semi-arid ecosystems: only when these limitations are identified can management interventions be effectively targeted. This study investigated demographic, seed and microsite limitations to establishing native plant species in a semi-arid, post...
Article
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Ant Forest, a mobile app developed by the monolithic Alibaba Group, is greening individuals’ daily activities and transforming human capacity to reverse global environmental degradation. Over 500 million e‐trees are being cultivated every day in China using Ant Forest, and over 122 million real trees have been planted over more than 112 000 ha of d...
Article
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1. Global interest in building healthy soils combined with new DNA sequencing technologies has led to the generation of a vast amount of soil microbial community (SMC) data. 2. SMC analysis is being adopted widely for monitoring ecological restoration trajecto-ries. However, despite the large and growing quantity of soil microbial data, it remains...
Article
The ecological restoration of ecosystem services and biodiversity is a key intervention used to reverse the impacts of anthropogenic activities such as mining. Assessment of the performance of restoration against completion criteria relies on biodiversity monitoring. However, monitoring usually overlooks soil microbial communities (SMC), despite in...
Article
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Despite their diversity and the potential for specialized pollination systems, Australian Fabaceae have received little attention in pollination studies. In the Southwest Australian Floristic Region (SWAFR), a recognized biodiversity hotspot, co-occurring and abundant species of Faboideae exhibit a range of floral colours and forms, suggestive of a...
Article
Habitat loss is a leading cause of biodiversity declines globally, and there has been increasing recognition in recent years of the importance of restoring degraded habitats to functional ecosystems to ameliorate this loss. Despite the critical roles animals play in ecosystems, animals are often overlooked in assessments of ecological restoration s...
Article
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Restoration practitioners must increasingly incorporate seed procurement models and seed use planning early in project development, despite insufficient guidance about what are reasonable expectations for the sourcing and use of native seeds. This special issue presents a series of papers examining each key step in the native seed supply chain, and...
Article
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Seed enhancement technologies such as seed priming and seed coating, developed by the agricultural seed industry, are standard procedures for the majority of crop and horticultural seeds. However, such technologies are only just being evaluated for native plant seeds despite the potential benefits of such treatments for improving restoration effect...
Article
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From 50 to 90% of wild plant species worldwide produce seeds that are dormant upon maturity, with specific dormancy traits driven by species’ occurrence geography, growth form, and genetic factors. While dormancy is a beneficial adaptation for intact natural systems, it can limit plant recruitment in restoration scenarios because seeds may take sev...
Article
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Ecological restoration, when implemented effectively and sustainably, contributes to protecting biodiversity; improving human health and wellbeing; increasing food and water security; delivering goods, services, and economic prosperity; and supporting climate change mitigation, resilience, and adaptation. It is a solutions-based approach that engag...
Article
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Aims This study investigated the effect of method of blending and spreading topsoil-waste rock (as dictated by waste dump position), rock addition, topsoil source and seed burial on seedling emergence from seeds broadcast onto mine restoration sites. Methods Seed of 10 species were surface sown onto a waste rock dump plateau with six cover treatme...
Article
The United Nations’ recent declaration of a Decade on Ecosystem Restoration (2021–2030) conveys the immense scales of degradation we face and the urgency of ecological recovery. Yet it speaks predominantly to productivity‐based approaches that may poorly balance conservation and development goals. As a result, it overlooks or distorts the very real...
Article
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The last decade has seen an exponential increase in the application of unmanned aerial vehicles (UAVs) to ecological monitoring research, though with little standardisation or comparability in methodological approaches and research aims. We reviewed the international peer-reviewed literature in order to explore the potential limitations on the feas...
Article
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Background and aims: Little is known about the evolutionary and ecological drivers of carnivory in plants, particularly for those terrestrial species that do not occur in typical swamp or bog habitats. The Mediterranean endemic Drosophyllum lusitanicum (Drosophyllaceae) is one of very few terrestrial carnivorous plant species outside of Australia...
Article
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The plastid genomes of four related carnivorous plants (Drosera regia, Drosera erythrorhiza, Aldrovanda vesiculosa and Dionaea muscipula) were sequenced to examine changes potentially induced by the transition to carnivory. The plastid genomes of the Droseraceae show multiple rearrangements, gene losses and large expansions or contractions of the i...
Article
The global demand for restoration has increased orders of magnitude in the last decade, and hundreds of thousands of tonnes of native seed are required to feed this restoration engine [ 1 ] ( Figure 1). But where are all the seeds required by restoration going to come from? Wild seed resources continue to be depleted by habitat loss, land degradati...
Article
background and aims : Substantial evidence supports the hypothesis that morphophysiological dormancy (MPD) is the basal kind of seed dormancy in the angiosperms. However, only physiological dormancy (PD) is reported in seeds of the ANA-grade genus Nymphaea. The primary aim of this study was to determine the kind of dormancy in seeds of six species...
Article
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Acacia gerrardii is the only native tree species of the Kuwaiti desert ecosystem. However, anthropogenic disturbances and harsh arid climate have contributed towards the disappearance of this keystone species from its habitat. In this study, effects of different seed pretreatments to break dormancy, water entry pathway, and ecology (seasonal timing...
Article
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Confusion surrounding the definition and application of terminology in post-mining ecological repair has resulted in uncertainty for industry, the scientific community and regulators. This lack of clarity may underrepresent high aspirations or could be misused to disguise low aspirations and so is problematic for setting objectives, establishing go...
Article
Seed biology in the annual herbaceous flora of ecologically stressful, seasonally wet habitats remains largely unexplored. Temporal and spatial species turnover among these habitats is often high, yet little is known about how fine-scale habitat variation drives intraspecific variability in seed dormancy depth and seed germination requirements. The...
Article
Topsoil replacement is a standard procedure in restoration of mined landscapes as it provides a source of propagules via the soil seed bank, as well as provides favourable physical, chemical and microbiological properties for plant establishment. With the availability of topsoil frequently limited in mining, soil cover designs that maximise the use...
Article
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Aims Some sulfur-accumulating species from arid habitats facilitate a little-understood foliar gypsum (CaSO4•2H2O) biomineralisation. This study seeks to increase our understanding of the ecophysiological and nutritional function of phytogenic gypsum, including how gypsum-formers influence soil S and Ca (S/Ca) cycling mineralogy and distribution....
Article
1.Demographic recruitment processes, such as seed germination and seedling emergence, are critical transitional phases to the re-establishment of degraded plant populations, but often fail due to rainfall not supporting plant requirements. Using species from the widespread arid Australian perennial grass genus Triodia, we investigated the interacti...
Article
The assumption underpinning the US$958 billion global resource sector is continued access to deposits of which an increasing number are targeting pristine, often biodiverse regions of the planet. Regulation of resource access, through leading policy frameworks, is currently based on the expectation that the resource sector has capacity to restore t...
Article
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Mining of mineral resources produces substantial volumes of crushed rock based wastes that are characterised by poor physical structure and hydrology, unstable geochemistry and potentially toxic chemical conditions. Recycling of these substrates is desirable and can be achieved by blending waste with native soil to form a ‘novel substrate’ which ma...
Article
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Na kb , 86 Rb kb , Apis mellifera, cost of living, field metabolic rate, honeybee Field metabolic rate (FMR) links the energy budget of an animal with the constraints of its ecosystem, but is particularly difficult to measure for small organisms. Landscape degradation exacerbates environmental adversity and reduces resource availability, imposing h...
Article
Recent studies suggest sulfur-accumulators (thiophores and gypsophiles) produce foliar gypsum (CaSO4·2H2O) as a novel biomineralogical tolerance mechanism against sulfate salinity and excess soluble calcium (e.g. gypsic soil). However, little is known of the geochemical and ecophysiological aspects of foliar gypsum. The compositional, developmental...
Article
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The plastid genome of plants is the smallest and most gene-rich of the three genomes in each cell and the one generally present in the highest copy number. As a result, obtaining plastid DNA sequence is a particularly cost-effective way of discovering genetic information about a plant. Until recently, the sequence information gathered in this way w...
Article
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In situ edaphic factors affecting seed germination and seedling emergence of three framework species of Acacia were investigated with the intent of developing fundamental and scalable restoration capacity for Arabian dryland restoration. Direct seeding represents the most efficient means to restore vegetation at the landscape scale and this study p...
Article
We assess the impacts of a wildfire on soil respiration in a semi-arid ecosystem • Larger rates of CO 2 efflux were found in the burnt areas compared to the un-burnt • Rs was higher under Eucalyptus trees and Acacia shrubs versus grasses or bare soil • CO 2 fluxes were triggered with higher temperatures and water availability • Q10 was significantl...
Article
Seed coating is the practice of covering seeds with external materials to improve handling, protection, and, to a lesser extent, germination enhancement and plant establishment. With an annual value exceeding US$1 billion dollars, this technology is mostly the preserve of the private research sector, with few links to the scientific community. Here...
Book
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Banksia woodlands represent an important part of the rich fabric of Southwest Australia’s biodiversity. Their close proximity to the sprawling Perth Metropolitan Region has seen losses of 60% of woodland lost in areas with many of the remnants under increasing threats from processes associated with fragmentation. Integrating future planning with re...
Poster
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Poster presented in Theo Murphy Australian Frontiers of Science symposium 2016
Conference Paper
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Restoring ecosystem services, such as pollination, is critical to ensuring the successful maintenance of plant reproduction. This study is one of the first to assess ecological and genetic connectivity between remnant and restored ecosystems, within a highly fragmented Global Biodiversity Hotspot. Pollinator observations and genetic data were colle...
Article
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Background and Aims: Organisms occupying the edges of natural geographic ranges usually survive at the extreme limits of their innate physiological tolerances. Extreme and prolonged fluctuations in environmental conditions often associated with climate change, and exacerbated at species’ geographical range edges, are known to trigger alternative re...
Article
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1. Rates of land degradation have outpaced our capacity to achieve global restoration goals using seed sourced exclusively from local, wild seed collections 2. In order to overcome this challenge, Seed Production Areas (SPA) deserve broader application and greater conceptual and practical rigour in their design to produce seeds effectively for a va...
Article
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Northern Australia supports the world’s largest estate of undeveloped tropical savannas, but previous studies of ant diversity in the region have covered only a fraction of its land area and habitat diversity. We assess patterns of ant species and functional diversity, their environmental predictors, and biogeographic significance in the central No...
Article
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Specialized mycorrhizal interactions have the potential to limit the geographical range of plant species and contribute to reproductive isolation. We investigated these predictions in Caladenia (Orchidaceae) from south-western Australia, a group known to have specialized mycorrhizal associations with the genus Sebacina s.l. Sequencing of fungal iso...
Article
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Land degradation affects 10–20 % of drylands globally. Intensive land use and management, large-scale disturbances such as extractive operations, and global climate change, have contributed to degradation of these systems worldwide. Restoring these damaged environments is critical to improving ecosystem services and functions, conserve biodiversity...
Article
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Habitat fragmentation often results in significant degradation of the structure and composition of remnant natural vegetation, leading to substantial biodiversity decline. Ants are an ecologically dominant faunal group known to be sensitive to vegetation degradation following fragmentation. We examined ant diversity and composition in relation to c...
Article
Pollination via sexual deception is hypothesised to be associated with more frequent outcrossing and greater pollen dispersal distances than strategies involving food-foraging behaviour. In this study, we investigated the behaviour and movement distances of Lissopimpla excelsa (Hymenoptera: Ichneumonidae), and their implications for the pollination...
Article
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With nearly a quarter of global dryland systems considered to be degraded, the level and scale of degradation often exceed the thresholds for autogenic recovery, requiring human intervention to ensure that ecosystem biodiversity, structure, and function can be improved. A “Think Tank” workshop focusing on advancing the ecological approaches to larg...
Article
The topsoil native seed bank is a valuable resource in post-mining rehabilitation capable of providing a cost-effective means for restoring plant diversity. However, the value of the native soil seed bank is affected by topsoil management practices especially long-term stockpiling. Salvaged topsoil is usually stockpiled until mining operations are...
Article
Ecological restoration of grasslands using wild-collected seeds is a major undertaking in many parts of the world. Impediments to effective seed use such as low seed quality, difficult-to-handle and bulky collections of seeds, and seed dormancy and germination constraints contribute to restoration failure. Native grass florets are typically irregul...
Presentation
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An orchid conservation partnership for southeastern Australia, Proceedings of 6th International Orchid Conservation Congress (IOCC6), 16-20 May 2016, Hong Kong, China, pp. 13. (2016)
Article
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A thorough knowledge of soil functionality is critical to successful restoration of disturbed ecosystems, and its evaluation involves the assessment of soil properties and processes as a component of a healthy ecosystem. Here, we propose a set of soil quality indicators to assess the soil status in restored soils (topsoil and waste material) and te...
Book
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The Pilbara region in Australia’s arid northwest is rich in flora that is suited to extreme temperatures and boom and bust cycles of moisture availability. It is also a region important for its natural resources. In places where mining activities have finished and the land is under management for ecological restoration, there is increasing demand f...
Article
Full-text available
Land degradation affects 10–20 % of drylands globally. Intensive land use and management, large scale disturbances such as extractive operations, and global climate change, have contributed to degradation of these systems worldwide. Restoring these damaged environments is critical to improve ecosystem services and functions, conserve biodiversity,...
Article
Seasonal acclimatisation of thermal tolerance, evaporative water loss and metabolic rate, along with regulation of the hive environment, are key ways whereby hive-based social insects mediate climatic challenges throughout the year, but the relative importance of these traits remains poorly understood. We examined seasonal variation in metabolic ra...
Poster
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This study aims to characterize the Bacterial and Archaeal Community Composition (BAC) on pristine soils next to a major mining-site in Western Australia. Briefly, amplicon and metagenome approaches were used to assess the changes that store of topsoil (which are been used for downstream rehabilitation processes) may do to the BAC.
Article
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Re-instating dominant Triodia grassland communities following disturbance has been a focus of arid land restoration practitioners for decades in Australia. Yet, seed quality and variable seed germination have seriously hindered the re-establishment potential of Triodia species to date. This study set out to examine diaspore quality, germination req...
Article
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Despite the unprecedented global decline in extant populations of Aldrovanda vesiculosa in the last century, little is known about the reproductive biology of this iconic aquatic carnivorous plant. This study aimed to investigate the role of seed-based reproduction in the ecology of A. vesiculosa, with particular focus on the interplay between the...
Article
Germination and emergence are often the most precarious stage in a plant's lifecycle: plants are particularly vulnerable to environmental stress at this time. Despite these constraints, plants colonize much of the planet including extreme environments. We argue that for many species, establishment in extreme situations is not because seed is adapte...
Article
Restoration ecology is a science, driven by practical application. Despite the well-recognized disconnect between the science and practice of ecological restoration, there is a lack of practical solutions. In 2014, US agriculture marked the 100th anniversary of the Cooperative Extension Service, providing a timely reminder that the divide between s...