Talk delivered at the annual meeting of the Canadian Society for Ecology and Evolution in St. John's Newfoundland, July 2016
Website: www.malexsmith.com
Twitter: @Alex_Smith_Ants
Tsetse, trypanosomiasis and communities in transition: investigations into he...Naomi Marks
Presentation by Dr Neil Anderson of the University of Edinburgh at the One Health for the Real World: zoonoses, ecosystems and wellbeing symposium, London 17-18 March 2016
Global change, parasites, and community assembly: How a parasite expanded its...Erica Tsai
This presentation was given at the Oosting Memorial Symposium on April 17, 2009. The authors were Yi-Hsin Erica Tsai and Paul S. Manos.
Abstract:
Because species respond individually to climate change, understanding community assembly requires examination of multiple species from a diversity of forest niches. We present the phylogeographic history of an understory, parasitic herb (Epifagus virginiana, beechdrop) that has an obligate and host specific relationship with a common eastern North American forest tree (Fagus grandifolia, American beech). The migration histories of the host and parasite were compared to elucidate potential limits on the parasite’s range and to understand their responses to shared climate change. Two chloroplast DNA regions were sequenced and landscape genetic and coalescent methods were used to reconstruct the post-glacial migration history of the parasite. Epifagus virginiana is shown to have migrated from the southern Appalachians into the Northeast and then westward into the Midwest. The parasite's pattern of expansion parallels the development of beech forests but differs from the routes of initial range expansion of beech. This suggests that host density effects drive the distributional changes in the parasite, which are further confirmed in fine scale studies. The composite migration history of this parasite and its host shows how two diverse components of a forest community colonized the landscape separately -- even as aspects of the host's distribution greatly influenced the path of the parasite -- before reassembling into their present day co-distributed range.
The animations from the powerpoint were partly converted using code from Neil Mitchell's Haskell Blog, http://neilmitchell.blogspot.com/2007/11/creating-pdf-from-powerpoint-with.html.
Presentation by Dr. James M. Vose to support the Adaptive Silviculture for Climate Change (ASCC) J.W. Jones Ecological Research Center Workshop held January 12-14, 2016
Tsetse, trypanosomiasis and communities in transition: investigations into he...Naomi Marks
Presentation by Dr Neil Anderson of the University of Edinburgh at the One Health for the Real World: zoonoses, ecosystems and wellbeing symposium, London 17-18 March 2016
Global change, parasites, and community assembly: How a parasite expanded its...Erica Tsai
This presentation was given at the Oosting Memorial Symposium on April 17, 2009. The authors were Yi-Hsin Erica Tsai and Paul S. Manos.
Abstract:
Because species respond individually to climate change, understanding community assembly requires examination of multiple species from a diversity of forest niches. We present the phylogeographic history of an understory, parasitic herb (Epifagus virginiana, beechdrop) that has an obligate and host specific relationship with a common eastern North American forest tree (Fagus grandifolia, American beech). The migration histories of the host and parasite were compared to elucidate potential limits on the parasite’s range and to understand their responses to shared climate change. Two chloroplast DNA regions were sequenced and landscape genetic and coalescent methods were used to reconstruct the post-glacial migration history of the parasite. Epifagus virginiana is shown to have migrated from the southern Appalachians into the Northeast and then westward into the Midwest. The parasite's pattern of expansion parallels the development of beech forests but differs from the routes of initial range expansion of beech. This suggests that host density effects drive the distributional changes in the parasite, which are further confirmed in fine scale studies. The composite migration history of this parasite and its host shows how two diverse components of a forest community colonized the landscape separately -- even as aspects of the host's distribution greatly influenced the path of the parasite -- before reassembling into their present day co-distributed range.
The animations from the powerpoint were partly converted using code from Neil Mitchell's Haskell Blog, http://neilmitchell.blogspot.com/2007/11/creating-pdf-from-powerpoint-with.html.
Presentation by Dr. James M. Vose to support the Adaptive Silviculture for Climate Change (ASCC) J.W. Jones Ecological Research Center Workshop held January 12-14, 2016
I created a mathematical model of the effects of catch-and-release fishing regulations on brook trout population using an Age-structured deterministics population model with 5 cohorts (based on the average lifespan of brook trout which is 5 years) using euler integration step of 1.
Patches, Tsetse and Livelihoods in the Zambezi Valley, ZimbabweNaomi Marks
Presentation by Professor Vupenyu Dzingirai of the University of Zimbabwe at the One Health for the Real World: zoonoses, ecosystems and wellbeing symposium, London 17-18 March 2016
Strong variance at decadal and multidecadal timescales is a common feature of most tree-ring width records. But does this aspect of tree growth exhibit such long-memory behavior due to biology, climate, or some combination of the two factors? Understanding the origins of this behavior is crucial for efforts to evaluate the causes of decadal variability in the climate system.
Presentation at Johann Gutenburg University (Mainz) on February 16, 2017.
Irrigation and the risk of Rift Valley fever transmission - a case study from...Naomi Marks
Presentation by Dr Bernard Bett of the International Livestock Research Institute, Nairobi, at the One Health for the Real World: zoonoses, ecosystems and wellbeing symposium, London 17-18 March 2016
Solar ghosts: Weighing the evidence for sunspot cycles in fossil treesScott St. George
In their study of tree rings from the Chemnitz Fossil Forest (Germany), Luthardt and Rößler (2017) claim to identify a regular near-11-yr cyclicity in growth, and present that pattern as evidence of the influence of the Schwabe solar cycle (Usokin and Mursula, 2003) on climate and forest productivity during the early Permian. If correctly interpreted, these fossil tree rings would indicate the sunspot cycle was the dominant influence on interannual variability in Earth’s climate during this period and that it has been a consistent aspect of our Sun’s behavior for at least the past 300 m.y. We argue the fossil tree-ring record from Chemnitz does not constitute reliable evidence of solar activity during the Permian because the individual tree-ring sequences are not correctly aligned (dendrochronologically dated) and, as a result, the mean ring-width composite is not a meaningful estimate of year-to-year variations in tree growth in this ancient forest.
Presentation by Chris Swanston to support the Adaptive Silviculture for Climate Change (ASCC) J.W. Jones Ecological Research Center Workshop held January 12-14, 2016
Effects of density on spacing patterns and habitat associations of a Neotropi...Nicole Angeli
Presentation at Ecological Society of America, August 2013. Minneapolis, USA. –Oral Paper
Angeli, N. F., K. Lips, G. V. DiRenzo, and A. Cunha. “Effects of density on spacing patterns
and habitat associations in the Neotropical Glassfrog Espadarana prosoblepon.”
Inter-epidemic Rift Valley fever virus seropositivity in an irrigation scheme...ILRI
Presentation by Deborah Mbotha, Bernard Bett, Salome Kairu-Wanyoike, Delia Grace, Absolomon Kihara, Martin Wainaina, Antje Hoppenheit and Peter-Henning Clausen and Johanna Lindahl at the first joint conference of the Association of Institutions for Tropical Veterinary Medicine and the Society of Tropical Veterinary Medicine, Berlin, Germany, 4–8 September 2016.
Poster survey of migratory waterfowl on krystal lake quarry pond chazyMichelle Volk
I created this poster and presented it at the 2013 Northeastern Natural History Conference and at the 2013 Sigma Xi research presentation at SUNY Plattsburgh.
I created a mathematical model of the effects of catch-and-release fishing regulations on brook trout population using an Age-structured deterministics population model with 5 cohorts (based on the average lifespan of brook trout which is 5 years) using euler integration step of 1.
Patches, Tsetse and Livelihoods in the Zambezi Valley, ZimbabweNaomi Marks
Presentation by Professor Vupenyu Dzingirai of the University of Zimbabwe at the One Health for the Real World: zoonoses, ecosystems and wellbeing symposium, London 17-18 March 2016
Strong variance at decadal and multidecadal timescales is a common feature of most tree-ring width records. But does this aspect of tree growth exhibit such long-memory behavior due to biology, climate, or some combination of the two factors? Understanding the origins of this behavior is crucial for efforts to evaluate the causes of decadal variability in the climate system.
Presentation at Johann Gutenburg University (Mainz) on February 16, 2017.
Irrigation and the risk of Rift Valley fever transmission - a case study from...Naomi Marks
Presentation by Dr Bernard Bett of the International Livestock Research Institute, Nairobi, at the One Health for the Real World: zoonoses, ecosystems and wellbeing symposium, London 17-18 March 2016
Solar ghosts: Weighing the evidence for sunspot cycles in fossil treesScott St. George
In their study of tree rings from the Chemnitz Fossil Forest (Germany), Luthardt and Rößler (2017) claim to identify a regular near-11-yr cyclicity in growth, and present that pattern as evidence of the influence of the Schwabe solar cycle (Usokin and Mursula, 2003) on climate and forest productivity during the early Permian. If correctly interpreted, these fossil tree rings would indicate the sunspot cycle was the dominant influence on interannual variability in Earth’s climate during this period and that it has been a consistent aspect of our Sun’s behavior for at least the past 300 m.y. We argue the fossil tree-ring record from Chemnitz does not constitute reliable evidence of solar activity during the Permian because the individual tree-ring sequences are not correctly aligned (dendrochronologically dated) and, as a result, the mean ring-width composite is not a meaningful estimate of year-to-year variations in tree growth in this ancient forest.
Presentation by Chris Swanston to support the Adaptive Silviculture for Climate Change (ASCC) J.W. Jones Ecological Research Center Workshop held January 12-14, 2016
Effects of density on spacing patterns and habitat associations of a Neotropi...Nicole Angeli
Presentation at Ecological Society of America, August 2013. Minneapolis, USA. –Oral Paper
Angeli, N. F., K. Lips, G. V. DiRenzo, and A. Cunha. “Effects of density on spacing patterns
and habitat associations in the Neotropical Glassfrog Espadarana prosoblepon.”
Inter-epidemic Rift Valley fever virus seropositivity in an irrigation scheme...ILRI
Presentation by Deborah Mbotha, Bernard Bett, Salome Kairu-Wanyoike, Delia Grace, Absolomon Kihara, Martin Wainaina, Antje Hoppenheit and Peter-Henning Clausen and Johanna Lindahl at the first joint conference of the Association of Institutions for Tropical Veterinary Medicine and the Society of Tropical Veterinary Medicine, Berlin, Germany, 4–8 September 2016.
Poster survey of migratory waterfowl on krystal lake quarry pond chazyMichelle Volk
I created this poster and presented it at the 2013 Northeastern Natural History Conference and at the 2013 Sigma Xi research presentation at SUNY Plattsburgh.
Is homo sapiens a key species in an ecological system?Ernst Satvanyi
About the role of the species Homo Sapiens in environment. The postulate of human ecology can help us to better understand the connections between Homo Sapiens as a key species and its natural environment in order to ensure the sustainability of ecological systems.
You and Your Students Are the Scientists: A Sampling of Citizen-Science Oppor...Teaching the Hudson Valley
Presentation given by Chris Bowser, Norrie Point Environmental Education Center (NYS Department of Environmental Conservation) during Teaching the Hudson Valley's Summer Institute in July 2009. www.TeachingtheHudsonValley.org
What is greenhouse gasses and how many gasses are there to affect the Earth.moosaasad1975
What are greenhouse gasses how they affect the earth and its environment what is the future of the environment and earth how the weather and the climate effects.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
Toxic effects of heavy metals : Lead and Arsenicsanjana502982
Heavy metals are naturally occuring metallic chemical elements that have relatively high density, and are toxic at even low concentrations. All toxic metals are termed as heavy metals irrespective of their atomic mass and density, eg. arsenic, lead, mercury, cadmium, thallium, chromium, etc.
Seminar of U.V. Spectroscopy by SAMIR PANDASAMIR PANDA
Spectroscopy is a branch of science dealing the study of interaction of electromagnetic radiation with matter.
Ultraviolet-visible spectroscopy refers to absorption spectroscopy or reflect spectroscopy in the UV-VIS spectral region.
Ultraviolet-visible spectroscopy is an analytical method that can measure the amount of light received by the analyte.
Salas, V. (2024) "John of St. Thomas (Poinsot) on the Science of Sacred Theol...Studia Poinsotiana
I Introduction
II Subalternation and Theology
III Theology and Dogmatic Declarations
IV The Mixed Principles of Theology
V Virtual Revelation: The Unity of Theology
VI Theology as a Natural Science
VII Theology’s Certitude
VIII Conclusion
Notes
Bibliography
All the contents are fully attributable to the author, Doctor Victor Salas. Should you wish to get this text republished, get in touch with the author or the editorial committee of the Studia Poinsotiana. Insofar as possible, we will be happy to broker your contact.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
THE IMPORTANCE OF MARTIAN ATMOSPHERE SAMPLE RETURN.Sérgio Sacani
The return of a sample of near-surface atmosphere from Mars would facilitate answers to several first-order science questions surrounding the formation and evolution of the planet. One of the important aspects of terrestrial planet formation in general is the role that primary atmospheres played in influencing the chemistry and structure of the planets and their antecedents. Studies of the martian atmosphere can be used to investigate the role of a primary atmosphere in its history. Atmosphere samples would also inform our understanding of the near-surface chemistry of the planet, and ultimately the prospects for life. High-precision isotopic analyses of constituent gases are needed to address these questions, requiring that the analyses are made on returned samples rather than in situ.
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
20. Morphospace along an elevational
gradient
• Largest “ant‐space” occurs
with the greatest diversity
• Dry & cloud forest occupy a
subset of this “ant‐space”
• These subsets represent
smaller body measurements
of features that are
functionally associated with
predation.
• This does not bode well for
the future.
• The largest “Collembola‐
space” occurs in the dry
forest. Not more diverse.
Range of ranges.
• Rain & cloud forest occupy a
different portion of this
“Collembola‐space”
• Traits here are those
associated with life at the
surface.
21. 1. Turnover: extremely small
communities
• Climate change is affecting and will
continue to affect turnover.
• Vulnerable, vulnerable vulnerable!
2. Degree of coupling between
genetic divergence and
morphospace is not simple
• Related in ants, not so much in
Collembola
3. What next?
• Community characterisation
• Expansion of functional traits (ie. related
to abiotic variables of thermal ecology)
• Taxonomic expansion
Messages
22. Acknowledgements
• The ACG for protecting it all!
• The ACG parataxonomists for
collecting, rearing and
databasing ACG insects.
• ALL the graduate and
undergraduate students and
volunteers in the Smith Lab for
their enthusiasm, questions,
dedication and love for the
little things.
• NSERC Discovery Grant to
MAS
@Alex_Smith_Antssalex@uoguelph.ca
23. Come & work with us!
http://malexsmith.com/
Chris Ho