Siegfried L Krauss

Siegfried L Krauss
Government of Western Australia · Botanic Gardens and Parks Authority

PhD (U Wollongong)

About

179
Publications
21,284
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
3,839
Citations
Additional affiliations
November 1998 - present
University of Western Australia
Position
  • Professor (Associate)
November 1998 - present
University of Western Australia
Position
  • Professor (Associate)

Publications

Publications (179)
Article
In post-mining rehabilitation, successful mine closure planning requires specific, measurable, achievable, relevant and time-bound (SMART) completion criteria, such as returning ecological communities to match a target level of similarity to reference sites. Soil microbiota are fundamentally linked to the restoration of degraded ecosystems, helping...
Article
Ecological restoration is addressing the challenge of biodiversity conservation in landscapes where native vegetation has been extensively cleared. Reestablishing ecological interactions that support self-sustainable populations plays an essential role in restoration efforts. For animal-pollinated plant species, comparing mating system dynamics wit...
Article
Full-text available
The behaviour of pollinators has important consequences for plant mating. Nectar-feeding birds often display behaviour that results in more pollen carryover than insect pollinators, which is predicted to result in frequent outcrossing and high paternal diversity for bird-pollinated plants. We tested this prediction by quantifying mating system para...
Article
Full-text available
Pollinators and the pollination services they provide are critical for seed set and self-sustainability of most flowering plants. Despite this, pollinators are rarely assessed in restored plant communities, where their services are largely assumed to re-establish. Bird–pollinator richness, foraging, and interaction behavior were compared between na...
Article
Full-text available
An understanding of genetic diversity and the population genetic processes that impact future population viability is vital for the management and recovery of declining populations of threatened species. Styphelia longissima (Ericaceae) is a critically endangered shrub, restricted to a single fragmented population near Eneabba, 250 km north of Pert...
Article
Full-text available
The rapid expansion of urban areas worldwide is leading to native habitat loss and ecosystem fragmentation and degradation. Although the study of urbanisation’s impact on biodiversity is gaining increasing interest globally, there is still a disconnect between research recommendations and urbanisation strategies. Expansion of the Perth metropolitan...
Article
The rapid expansion of urban areas worldwide is leading to native habitat loss and ecosystem fragmentation and degradation. Although the study of urbanisation's impact on biodiversity is gaining increasing interest globally, there is still a disconnect between research recommendations and urbanisation strategies. Expansion of the Perth metropolitan...
Article
Ecological genetics can provide a novel contribution to assessing the achievement of restoration objectives. We used paternity assignment to infer realized pollen dispersal within, and pollen immigration into, a restoration population of Hakea nitida, a common near‐coastal shrub or small tree in southwest Australia. We compared mating system parame...
Article
Full-text available
To assess whether wide outcrossing (over 30 km) in the naturally fragmented Banksia ilicifolia R.Br. increases the ecological amplitude of offspring, we performed a comparative greenhouse growth study involving seedlings of three hand-pollinated progeny classes (self, local outcross, wide outcross) and a range of substrates and stress conditions. O...
Article
Full-text available
Reductions in genetic diversity and genetic connectivity have been documented in some predatory bird species in response to anthropogenic habitat fragmentation. The Southern Boobook (Ninox boobook) is the most common and widely-distributed owl in Australia but declines in abundance have been observed across its range. We used polymorphic microsatel...
Article
Plants pollinated by vertebrates are often visited by native and exotic insects foraging for pollen and nectar.We compared flower visitation rates, foraging behaviour, and the contribution to reproduction of nectar-feeding birds and the introduced honeybee Apis mellifera in four populations of the bird-pollinated Anigozanthos manglesii (Haemodorace...
Article
Evaluation of patterns of pollen dispersal, mating systems, population fitness, genetic diversity and differentiation in restoration and remnant plant populations can be useful in determining how well restoration activities have achieved their objectives. We used molecular tools to assess how well restoration objectives have been met for population...
Article
Empirical tests of comparability between restored and natural plant populations can be powerful tools for measuring progress towards restoration objectives, though they are rarely applied to critical metrics like genetic diversity, mating systems, and reproductive output via seed production. Here we compared these ecological and genetic measures fo...
Article
Selection against inbred progeny is a well-documented phenomenon in natural and experimental populations of trees with mixed mating systems. This inbreeding depression can be expressed at multiple life stages, including early seedling development. Eucalyptus caesia, a long-lived tree that is endemic to granite outcrops in south-west Australia, has...
Article
Pollination by nectarivorous birds is predicted to result in different patterns of pollen dispersal and plant mating compared to pollination by insects. We tested the prediction that paternal genetic diversity, outcrossing rate and realised pollen dispersal will be reduced when the primary pollinator group is excluded from bird‐pollinated plants. P...
Article
Historically fragmented and specialised habitats such as granite outcrops are understudied globally unique hotspots of plant evolution. In contrast to predictions based on mainstream population genetics theory, some granite outcrop plants appear to have persisted as very small populations despite prolonged geographic and genetic isolation. Eucalypt...
Article
Acacia cyclops or Ngaamarur, is a common coastal shrub or small tree of the south west of Western Australia and South Australia used for restoration in these landscapes and elsewhere. Knowledge of genetic diversity and mating systems of restoration populations is often lacking but can help inform likely restoration success. We compared genetic dive...
Article
Full-text available
Background and aims: In plants, the spatial and genetic distance between mates can influence reproductive success and offspring fitness. Negative fitness consequences associated with the extremes of inbreeding and outbreeding suggests that there will be an intermediate optimal outcrossing distance (OOD), the scale and drivers of which remain poorl...
Article
Full-text available
Habitat fragmentation affects landscape connectivity, the extent of which is influenced by the movement capacity of the vectors of seed and pollen dispersal for plants. Negative impacts of reduced connectivity can include reduced fecundity, increased inbreeding, genetic erosion and decreased long-term viability. These are issues for not only old (r...
Article
Full-text available
The Australian arid zone (AAZ) has undergone aridification and the formation of vast sandy deserts since the mid-Miocene. Studies on AAZ organisms, particularly animals, have shown patterns of mesic ancestry, persistence in rocky refugia and range expansions in arid lineages. There has been limited molecular investigation of plants in the AAZ, part...
Article
There is a growing realisation that cytotype variation within species complexes plays an important role in plant evolution however, there are relatively few investigations that describe the genetic diversity within and among related cytotypes. In the present study, we analysed patterns of genetic variation in 774 individuals from nine diploid, 14 t...
Article
The pollination biology of Anigozanthos humilis (Haemodoraceae) was studied within a Banksia woodland reserve using a combination of field techniques and genetic analysis. Motion-triggered cameras were deployed on 25 flowering plants to identify visitors to flowers, quantify visitation rates and assess visitor behaviour. Entire A. humilis plants we...
Article
Full-text available
The high species endemism characteristic of many of the world's terrestrial island systems provides a model for studying evolutionary patterns and processes, yet there has been no synthesis of studies to provide a systematic evaluation of terrestrial island systems in this context. The banded iron formations (BIFs) of south‐western Australia are an...
Article
Movement is fundamental to the ecology and evolutionary dynamics within species. Understanding movement through seed dispersal in the marine environment can be difficult due to the high spatial and temporal variability of ocean currents. We employed a mutually enriching approach of population genetic assignment procedures and dispersal predictions...
Article
Understanding the response of species to past climatic changes and whether particular areas acted as refugia is critical both to our understanding of the distribution of genetic variation, and for the conservation and/or restoration of species. We used phylogeographical analyses of Acacia karina, a Banded Iron Formation (BIF) associated species, to...
Article
Full-text available
• Identification of pollen vectors is a fundamental objective of pollination biology. The foraging and social behavior of these pollinators has profound effects on plant mating, making quantification of their behavior critical for understanding the ecological and evolutionary consequences of different pollinators for the plants they visit. However,...
Article
Full-text available
Selecting the geographic origin (the provenance) of seed is a key decision in restoration. The last decade has seen a vigorous debate on whether to use local or non-local seed. The use of local seed has been the preferred approach as it is expected to maintain local adaptation and avoid deleterious population effects (e.g. maladaptation, outbreedin...
Article
Tetratheca erubescens is a narrowly endemic species including ∼6300 plants restricted to a 2-km² distribution on the south Koolyanobbing Range Banded Ironstone Formation (BIF) in Western Australia. A key objective of the present study was to characterise population genetic variation, and its spatial structuring across the entire distribution of T....
Article
Ricinocarpos brevis (Euphorbiaceae) is a declared rare species currently known from only three Banded Ironstone Formation (BIF) ranges (Perrinvale, Johnston and Windarling Ranges) in the Yilgarn region of Western Australia. The present study assessed the potential impact of proposed mining on genetic diversity within R. brevis. Approximately 30 pla...
Article
Full-text available
Landscape features and life-history traits affect gene flow, migration and drift to impact on spatial genetic structure of species. Understanding this is important for managing genetic diversity of threatened species. This study assessed the spatial genetic structure of the rare riparian Grevillea sp. Cooljarloo (Proteaceae), which is restricted to...
Article
Full-text available
Premise of the study Microsatellite markers were developed for population genetic analysis in the rare shrub Styphelia longissima (Ericaceae). Methods and Results We generated ca. 2.5 million sequence reads using a Personal Genome Machine semiconductor sequencer. Using the QDD pipeline, we designed primers for >12,000 sequences with PCR product le...
Article
Full-text available
Premise of the study Microsatellites were developed for the future assessment of population genetic structure, mating system, and dispersal of the perennial kangaroo paw, Anigozanthos manglesii (Haemodoraceae), and related species. Methods and Results Using a Personal Genome Machine (PGM) semiconductor sequencer, ca. 4.03 million sequence reads we...
Article
Full-text available
Demand for restoration of resilient, self-sustaining, and biodiverse natural ecosystems as a conservation measure is increasing globally; however, restoration efforts frequently fail to meet standards appropriate for this objective. Achieving these standards requires management underpinned by input from diverse scientific disciplines including ecol...
Article
Full-text available
Vegetation structure and plant species diversity of restoration sites are predicted to directly affect pollinator attraction, with potential impacts on gene flow, reproduction, genetic diversity of future generations, and ultimately restoration success. We compared Banksia attenuata R.Br. (Proteaceae) in a low species diversity restoration site and...
Article
Full-text available
Accurate estimation of connectivity among populations is fundamental for determining the drivers of population resilience, genetic diversity, adaptation and speciation. However the separation and quantification of contemporary versus historical connectivity remains a major challenge. This review focuses on marine angiosperms, seagrasses, that are f...
Article
Pollinator behaviour has profound effects on plant mating. Pollinators are predicted to minimise energetic costs during foraging bouts by moving between nearby flowers. However, a review of plant mating system studies reveals a mismatch between behavioural predictions and pollen-mediated gene dispersal in bird-pollinated plants. Paternal diversity...
Article
Intraspecific ploidy variation is an important component of angiosperm biodiversity; however, this variation is rarely considered in conservation programs. This is of particular concern when conservation activities include augmentation, reintroduction or ecological restoration because there are potentially negative consequences when ploidy variants...
Article
Full-text available
Next-generation sequencing is becoming increasingly accessible to researchers asking biosystematic questions, but current best practice in both choosing a specific approach and effectively analysing the resulting data set is still being explored. We present a case study for the use of genotyping-by-sequencing (GBS) to resolve relationships in a spe...
Data
Sample information for sequencing and analyses. (XLS)
Data
Intra-population distances across 10 populations for parameter h. (A) merged and (B) unmerged data sets. (TIF)
Data
Intra-population distances across 10 populations for parameter mr. (A) merged and (B) unmerged data sets. (TIF)
Data
RAxML trees for the unmerged data set. Trees are shown across three clustering thresholds (0.82, 0.91, 0.97) and three minimum taxon coverage levels (25%, 50%, 75%). Support values from 100 bootstrap replicates are only shown for branches with <100% support. Scale bar units are branch lengths from RAxML. Two selected trees are boxed (solid for the...
Data
Intra-population genetic distances for samples from T. basedowii population "Andado" across PyRAD parameter values. (A) merged, and (B) unmerged data sets. Parameters are c: clustering threshold; d: minimum depth for a statistical base call; h: maximum number of shared heterozygous positions; mr: minimum read depth for a dereplicate; n: maximum num...
Data
SNAPP trees and cloudograms for the PyRAD-selected unlinked SNPs and two assemblies. (A) 0.88/0.91 (merged/unmerged) clustering threshold, (B) 0.88/0.82 clustering threshold. Node values are posterior probabilities. Scale bars are coalescent units. (TIF)
Data
SNAPP trees and cloudograms for the biased unlinked SNPs and two assemblies. (A) 0.88/0.91 (merged/unmerged) clustering threshold, (B) 0.88/0.82 clustering threshold. Node values are posterior probabilities. Scale bars are coalescent units. (TIF)
Data
SVDquartets trees for the biased unlinked SNPs and two assemblies. (A) 0.88/0.91 (merged/unmerged) clustering threshold, (B) 0.88/0.82 clustering threshold. Species trees (left) and lineage trees (right). Support from 100 bootstrap replicates are shown for branches with support >75%. Branch lengths do not reflect divergence. (TIF)
Data
Intra-population distances across 10 populations for parameter c. (A) merged and (B) unmerged data sets. (TIF)
Data
Intra-population distances across 10 populations for parameter pl. (A) merged and (B) unmerged data sets. (TIF)
Data
SVDquartets trees for the PyRAD-selected unlinked SNPs and two assemblies. (A) 0.88/0.91 (merged/unmerged) clustering threshold, (B) 0.88/0.82 clustering threshold. Species trees (left) and lineage trees (right). Support from 100 bootstrap replicates are shown for branches with support >75%. Branch lengths do not reflect divergence. (TIF)
Data
RAxML trees for the merged data set. Trees are shown across three clustering thresholds (0.82, 0.88, 0.97) and three minimum taxon coverage levels (25%, 50%, 75%). Support values from 100 bootstrap replicates are only shown for branches with <100% support. Scale bar units are branch lengths from RAxML. Two selected trees are boxed (solid for the se...
Data
Recovered loci/SNPs and error rates for the PyRAD parameter optimisation. Merged data are designated with circles, unmerged with triangles. The replicate of T. basedowii is designated with hollow points, the replicate of T. "shova" with solid points. Parameters are c: clustering threshold; d: minimum depth for a statistical base call; h: maximum nu...
Data
Intra-population distances across 10 populations for parameter d. (A) merged and (B) unmerged data sets. (TIF)
Data
Intra-population distances across 10 populations for parameter n. (A) merged and (B) unmerged data sets. (TIF)
Conference Paper
Full-text available
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
Full-text available
To investigate the relationships between species attributes and genetic parameters in Australian plant species and to determine the associations in relation to predictions from population theory and previous global analyses. Continent of Australia. We assembled a dataset of all known population genetic analyses of Australian plants based on neutral...
Article
Optimal foraging behaviour by nectavores is expected to result in a leptokurtic pollen dispersal distribution and predominantly near-neighbour mating. However, complex social interactions among nectarivorous birds may result in different mating patterns to those typically observed in insect-pollinated plants. Mating system, realised pollen dispersa...
Article
Full-text available
Aim To examine the population genetic structure in Posidonia australis mead- ows, a marine foundation species capable of long distance dispersal (LDD), and the role of historical versus contemporary processes in shaping post Last Glacial Maximum (LGM) re-colonization. Location Southeastern Australia including the Bass Strait Islands. Methods We gen...
Article
The vast Australian arid zone formed over the last 15 million years, and gradual aridification as well as more extreme Pliocene and Pleistocene climate shifts have impacted the evolution of its biota. Understanding the evolutionary history of groups of organisms or regional biotas such as the Australian arid biota requires clear delimitation of the...
Article
Full-text available
Premise of the study: Microsatellite markers were developed for the rare Tetratheca erubescens (Elaeocarpaceae) to assess genetic diversity and spatial structuring. Methods and results: We generated ca. 2.7 million sequence reads using a Personal Genome Machine (PGM) semiconductor sequencer. Using the QDD pipeline, we designed primers for >12,00...
Article
Full-text available
Efforts to reestablish native plant species should consider intraspecific variation if we are to restore genetic diversity and evolutionary potential. Data describing spatial genetic structure and the scale of adaptive differentiation are needed for restoration seed sourcing. Genetically defined provenance zones provide species-specific guidelines...
Article
Full-text available
Ants are prominent seed dispersal agents in many ecosystems, and dispersal distances are small in comparison with vertebrate dispersal agents. However, the distance and distribution of ant-mediated dispersal in arid/semi-arid environments remains poorly explored. We used microsatellite markers and parentage assignment to quantify the distance and d...
Conference Paper
The dispersal of larvae, propagules and seeds of marine organisms by ocean currents and prevailing winds can influence genetic connectivity among marine populations 10s to 1000s of kilometers apart. The direct relationship between geographic and genetic distance is not always clear whereas an isolation by resistance generated by ocean currents is m...
Article
Full-text available
Populations in fragmented urban remnants may be at risk of genetic erosion as a result of reduced gene flow and elevated levels of inbreeding. This may have serious genetic implications for the long-term viability of remnant populations, in addition to the more immediate pressures caused by urbanisation. The population genetic structure of the gene...
Conference Paper
Sourcing of plant material for seagrass restoration programs has received little consideration. Almost all large-scale restoration programs have not considered the population genetic context: provenance and maintenance of genetic structure. Seagrass species are widespread globally and it is not uncommon for single species to be distributed around t...