scholarly journals Using insect natural history collections to study global change impacts: challenges and opportunities

2018 ◽  
Vol 374 (1763) ◽  
pp. 20170405 ◽  
Author(s):  
Heather M. Kharouba ◽  
Jayme M. M. Lewthwaite ◽  
Rob Guralnick ◽  
Jeremy T. Kerr ◽  
Mark Vellend
Keyword(s):  
Natural History ◽  
Global Change ◽  
Global Changes ◽  
Genomic Information ◽  
Theme Issue ◽  
The Past ◽  
Natural History Collections ◽  
Global Change Research ◽  
Challenges And Opportunities

Over the past two decades, natural history collections (NHCs) have played an increasingly prominent role in global change research, but they have still greater potential, especially for the most diverse group of animals on Earth: insects. Here, we review the role of NHCs in advancing our understanding of the ecological and evolutionary responses of insects to recent global changes. Insect NHCs have helped document changes in insects' geographical distributions, phenology, phenotypic and genotypic traits over time periods up to a century. Recent work demonstrates the enormous potential of NHCs data for examining insect responses at multiple temporal, spatial and phylogenetic scales. Moving forward, insect NHCs offer unique opportunities to examine the morphological, chemical and genomic information in each specimen, thus advancing our understanding of the processes underlying species’ ecological and evolutionary responses to rapid, widespread global changes. This article is part of the theme issue ‘Biological collections for understanding biodiversity in the anthropocene’.

scholarly journals Applying computer vision to digitised natural history collections for climate change research: temperature-size responses in British butterflies

2021 ◽  
Author(s):  
Rebecca J Wilson ◽  
Alexandre F de Siqueira ◽  
Stephen J Brooks ◽  
Benjamin W Price ◽  
Lea M Simon ◽  
...  
Keyword(s):  
Climate Change ◽  
Computer Vision ◽  
Natural History ◽  
Global Change ◽  
Adult Size ◽  
Phenotypic Data ◽  
Climate Change Research ◽  
Biotic Response ◽  
Natural History Collections ◽  
Global Change Research

Natural history collections (NHCs) are invaluable resources for understanding biotic response to global change. Museums around the world are currently imaging specimens, capturing specimen data, and making them freely available online. In parallel to the digitisation effort, there have been great advancements in computer vision (CV): the computer trained automated recognition/detection, and measurement of features in digital images. Applying CV to digitised NHCs has the potential to greatly accelerate the use of NHCs for biotic response to global change research. In this paper, we apply CV to a very large, digitised collection to test hypotheses in an established area of biotic response to climate change research: temperature-size responses. We develop a CV pipeline (Mothra) and apply it to the NHM iCollections of British butterflies (>180,000 specimens). Mothra automatically detects the specimen in the image, sets the scale, measures wing features (e.g., forewing length), determines the orientation of the specimen (pinned ventrally or dorsally), and identifies the sex. We pair these measurements and meta-data with temperature records to test how adult size varies with temperature during the immature stages of species and to assess patterns of sexual-size dimorphism across species and families. Mothra accurately measures the forewing lengths of butterfly specimens and compared to manual baseline measurements, Mothra accurately determines sex and forewing lengths of butterfly specimens. Females are the larger sex in most species and an increase in adult body size with warm monthly temperatures during the late larval stages is the most common temperature size response. These results confirm suspected patterns and support hypotheses based on recent studies using a smaller dataset of manually measured specimens. We show that CV can be a powerful tool to efficiently and accurately extract phenotypic data from a very large collection of digital NHCs. In the future, CV will become widely applied to digital NHC collections to advance ecological and evolutionary research and to accelerate the use of NHCs for biotic response to global change research.

Design Philanthropy: Challenges and Opportunities in the Evolution of Philanthropic Giving

2021 ◽  
pp. 089590482110494
Author(s):  
Melissa Arnold Lyon ◽  
Shani S. Bretas ◽  
Douglas D. Ready
Keyword(s):  
Education Reform ◽  
Teaching And Learning ◽  
Educational Innovation ◽  
Venture Philanthropy ◽  
Policy Borrowing ◽  
The Past ◽  
Challenges And Opportunities ◽  
Instructional Core ◽  
Democratic Engagement

Over the past several decades large philanthropies have adopted aggressive approaches to education reform that scholars have labeled venture philanthropy. These efforts focused on broad changes to schooling and education policy, borrowing techniques from the venture capital world. But many foundations have recently become convinced that market forces and macro-level policymaking alone cannot drive educational improvement, particularly in areas related to classroom teaching and learning. In response, foundations have begun to design their own instructional innovations and identify providers to implement them. This paper interprets these recent efforts as early evidence of a distinct adaptation in the evolving role of philanthropies, which we dub design philanthropy. Although this approach represents an attempt by foundations to simultaneously increase democratic engagement, directly influence the instructional core, and spur educational innovation, it poses new risks for coherence, scalability, and sustainability in education policymaking.

Historical Records and Collections

2019 ◽  
pp. 18-33
Author(s):  
Emily W. B. Russell Southgate
Keyword(s):  
Natural History ◽  
Historical Data ◽  
Historical Documents ◽  
Historical Records ◽  
The Past ◽  
Natural History Collections ◽  
Government Documents ◽  
Historical Photographs ◽  
General Explanation

This chapter introduces the use of historical documents and other forms of information that depend on written explanation, such as natural history collections and historical photographs. After a general explanation of the unique values of these data for establishing historical baselines and trajectories, it gives a brief introduction to the methods used to assess the validity of the sources, including consideration of various biases that are integral to written documents. These include a consideration of scale. The chapter then describes a variety of sources, including historical data, maps, photographs, government documents, and plant and animal collections, with examples of how each has been used to establish some condition or process in the past.

scholarly journals A 21st Century Vision for Neotropical Snake Systematics

2018 ◽  
Vol 1 (1) ◽  
pp. 58
Author(s):  
Robert Alexander Pyron
Keyword(s):  
Species Richness ◽  
Natural History ◽  
Global Change ◽  
South America ◽  
Ecosystem Function ◽  
Museum Specimens ◽  
Fine Grained ◽  
The Past ◽  
The Caribbean ◽  
Recent Synthesis

We live in an unprecedented age for systematics and biodiversity studies. Ongoing global change is leading to a future with reduced species richness and ecosystem function (Pereira, Navarro, & Martins, 2012). Yet, we know more about biodiversity now than at any time in the past. For squamates in particular, we have range maps for all species (Roll et al., 2017), phylogenies containing estimates for all species (Tonini, Beard, Ferreira, Jetz, & Pyron, 2016), and myriad ecological and natural-history datasets for a large percentage of species (Meiri et al., 2013; Mesquita et al., 2016). For neotropical snakes, a recent synthesis of museum specimens and verified localities offers a fine-grained perspective on their ecogeographic distribution in Central and South America, and the Caribbean (Guedes et al., 2018).

scholarly journals Inferring recent evolutionary changes in speech sounds

2021 ◽  
Vol 376 (1824) ◽  
Author(s):  
Steven Moran ◽  
Nicholas A. Lester ◽  
Eitan Grossman
Keyword(s):  
Language Contact ◽  
Language Evolution ◽  
Speech Sounds ◽  
Theme Issue ◽  
Short Term ◽  
The Past ◽  
Evolutionary Changes ◽  
The One ◽  
The Impact

In this paper, we investigate evolutionarily recent changes in the distributions of speech sounds in the world's languages. In particular, we explore the impact of language contact in the past two millennia on today's distributions. Based on three extensive databases of phonological inventories, we analyse the discrepancies between the distribution of speech sounds of ancient and reconstructed languages, on the one hand, and those in present-day languages, on the other. Furthermore, we analyse the degree to which the diffusion of speech sounds via language contact played a role in these discrepancies. We find evidence for substantive differences between ancient and present-day distributions, as well as for the important role of language contact in shaping these distributions over time. Moreover, our findings suggest that the distributions of speech sounds across geographic macro-areas were homogenized to an observable extent in recent millennia. Our findings suggest that what we call the Implicit Uniformitarian Hypothesis, at least with respect to the composition of phonological inventories, cannot be held uncritically. Linguists who would like to draw inferences about human language based on present-day cross-linguistic distributions must consider their theories in light of even short-term language evolution. This article is part of the theme issue ‘Reconstructing prehistoric languages’.

scholarly journals Looking Back for the Future: Utilizing Sawfish Saws from Natural History Collections to Conserve the Critically Endangered Largetooth Sawfish (Pristis pristis)

2018 ◽  
Vol 2 ◽  
pp. e25806
Author(s):  
Annmarie Fearing ◽  
Kelcee Smith ◽  
Tonya Wiley ◽  
Jeff Whitty ◽  
Kevin Feldheim ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Natural History ◽  
Mitochondrial Control Region ◽  
Genetic Bottleneck ◽  
Critically Endangered ◽  
Past Century ◽  
Term Survival ◽  
Tissue Samples ◽  
The Past ◽  
Natural History Collections

The Critically Endangered (International Union for Conservation of Nature) largetooth sawfish, Pristispristis, was historically distributed in the tropical Pacific, Atlantic and Indian Oceans. Today, ‘viable’ populations are largely limited to northern Australia. Populations that have suffered from drastic declines in abundance, such as those experienced by P.pristis, are typically at risk of having reduced, or low, levels of genetic diversity. Previous research found that P.pristis in Australia have experienced a genetic bottleneck, but it is unclear whether this bottleneck is the result of contemporary declines over the last century, or if it is the result of historic processes. A direct way to assess whether this genetic bottleneck occurred relatively recently is to compare levels of genetic diversity in contemporary and historic populations. Sawfish saws that were taken as trophies over the past century can now be found in natural history collections around the world and can provide DNA from past sawfish populations. We collected tissue samples from 150 dried P.pristis saws found in both private and public natural history collections. Because DNA from natural history specimens tends to be highly degraded, we targeted ten small DNA fragments, ~150 base pairs each, to amplify and sequence the entire mitochondrial control region. These data will provide important baseline information about P.pristis that can be used to quantify any loss of genetic diversity over the past ~100 years and assess their long-term survival potential. If the levels of genetic diversity in contemporary populations are severely reduced from those of past populations, protecting remaining genetic diversity within and between viable populations should be a priority in conservation plans.

scholarly journals The Expanding Role of Natural History Collections

2021 ◽  
Vol 109 (2) ◽  
Author(s):  
Eric J. Hilton ◽  
Gregory J. Watkins-Colwell ◽  
Sarah K. Huber
Keyword(s):  
Natural History ◽  
Natural History Collections

Women in the history of linguistics

2020 ◽  
pp. 1-30
Author(s):  
Wendy Ayres-Bennett ◽  
Helena Sanson
Keyword(s):  
Language Acquisition ◽  
Central Section ◽  
Future Directions ◽  
The Past ◽  
Early Stages ◽  
Challenges And Opportunities ◽  
History Of Linguistics ◽  
History Of ◽  
Role Of Women

This Introduction outlines the need for a ‘true history’ (Lerner 1976) of the role of women in the history of linguistics, which considers them on their own terms, and challenges categories and concepts devised for traditional male-dominated accounts. We start by considering what research has already been conducted in the field, before exploring some of the reasons for the relative dearth of studies. We outline some of the challenges and opportunities encountered by women who wished to study the nature of language and languages in the past. The geographical and chronological scope of this volume is then discussed. In a central section we examine some of the major recurring themes in the volume. These include attitudes towards women’s language, both positive and negative; women and language acquisition and teaching; and women as creators of new languages and scripts. We further explore women as authors, dedicatees, or intended readers of metalinguistic texts, as interpreters and translators, and as contributors to the linguistic documentation and maintenance. We consider how women supported male relatives and colleagues in their endeavours, sometimes in invisible ways, before reviewing the early stages of their entry into institutionalized contexts. The chapter concludes with a brief section on future directions for research.

Data Banking and the Role of the Natural History Collections

1993 ◽  
Vol 80 (2) ◽  
pp. 317 ◽  
Author(s):  
Nancy R. Morin ◽  
Janet Gomon
Keyword(s):  
Natural History ◽  
Natural History Collections
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