\u3ci\u3eArcynopteryx Compacta\u3c/i\u3e (Plecoptera: Perlodidae), A Holarctic Stonefly Confirmed From Lake Superior, With a Review and First Checklist of the Stoneflies of Michigan

Arcynopteryx compacta, a northern Holarctic species, is confirmed from Lake Superior along the Keweenaw Peninsula of Michigan\u27s Upper Peninsula. A checklist of stoneflies of Michigan is provided, reporting 58 species plus a list of an additional 19 species that are likely to occur in the state

Got Metadata in Your Future? Lessons Learned from Describing a Unique Image Collection

This practical session covers how Clemson University Libraries’ metadata team describes their largest digital collection of historical images. It focuses on what the team has learned from this project thus far. This includes developing workflows and strategies for describing images, creating and using a controlled vocabulary of local headings, and leveraging expertise across the libraries to streamline metadata creation. The team walks through the metadata management tool CollectiveAccess, shares image examples from the collection, and discusses the benefits of metadata documentation. The team concludes with challenges they still face, such as selecting appropriate subject headings, managing entities, and describing images with little to no information

Metadata-from-Home: A Digital Collections Project During COVID-19

The COVID-19 pandemic and the resulting shift to working from home (WFH) and online education proved a boon for digital collections. Not only can digital collections provide researchers remote access to rare and unique archival materials, but the metadata work that facilitates its discovery can be adapted to a WFH environment. At Clemson University Libraries, the metadata team facilitated a WFH project where 15 Libraries employees across two units are helping to describe a collection of over 2400 photographs. This project rose to the challenges of providing meaningful work to colleagues while working from home, empowering them to learn new skills and gain stronger understanding of metadata work, all while speeding up the timeframe for making this collection accessible online. This presentation provides a brief overview of the project workflow, including how training, communication, and quality control were managed remotely

Synthesis and Activity of Six-Membered Cyclic Alkyl Amino Carbene–Ruthenium Olefin Metathesis Catalysts

Ru–cyclic alkyl amino carbene (Ru–CAAC) olefin metathesis catalysts perform extraordinarily in metathesis macrocyclization and ethenolysis, but previous studies have been limited to the use of five-membered CAAC (CAAC-5) ligands. In this work, we synthesized a different group of ruthenium catalysts with more σ-donating and π-accepting six-membered CAAC (CAAC-6) ligands, and their metathesis activity was probed through initiation studies, ring-closing metathesis (RCM), cross-metathesis, and ethenolysis. These catalysts display higher initiation rates than analogous Ru–CAAC-5 complexes but demonstrate lower activity in RCM and ethenolysis

Effects of NHC-Backbone Substitution on Efficiency in Ruthenium-Based Olefin Metathesis

series of ruthenium olefin metathesis catalysts bearing N-heterocyclic carbene (NHC) ligands with varying degrees of backbone and N-aryl substitution have been prepared. These complexes show greater resistance to decomposition through C−H activation of the N-aryl group, resulting in increased catalyst lifetimes. This work has utilized robotic technology to examine the activity and stability of each catalyst in metathesis, providing insights into the relationship between ligand architecture and enhanced efficiency. The development of this robotic methodology has also shown that, under optimized conditions, catalyst loadings as low as 25 ppm can lead to 100% conversion in the ring-closing metathesis of diethyl diallylmalonate

Influences of a Cladophora Bloom on the Diets of Amblema plicata and Elliptio dilatata in the Upper Green River, Kentucky

Freshwater mussels are the most imperiled group of freshwater invertebrates globally. Recent research suggests a better understanding of mussel feeding ecology may facilitate and improve conservation efforts. The use of stable isotopes is becoming an increasingly common method to study aquatic food webs. Carbon (C) and nitrogen (N) are two of the most frequently employed elements in food web studies. Differences in natural abundance of 13C/12C can indicate which food sources are the basal sources of carbon incorporated into a consumer’s tissue, while the ratio of 15N /14N provides a method of assessing trophic position within a food web. Attached macroalgae, including the genus Cladophora, may be the dominant primary producers in running water systems. Cladophora, however, has not yet been indicated as a prominent assimilated food source for freshwater mussels. The overall purpose of this study was to assess if the diet of two common Green River mussel species, Amblema plicata (Say) and Elliptio dilatata (Rafinesque) were influenced by the seasonal change in availability of Cladophora during a summer-autumn rapid growth period. Two specific questions were asked: 1) Are the assimilated diets different between control and treatment areas, and 2) are the assimilated diets influenced by differing Cladophora levels across the study period? A mesocosm approach was employed in order to manipulate Cladophora levels within a treatment area. Seventy-two mussels, 36 each species, were sampled across four months, twice between control (= reachscale, heavy Cladophora cover) and treatment (= local-scale removal of Cladophora) areas. The freeware program, IsoSource, a concentration-weighted linear mixing model, was used to determine the potential contribution of potential food sources to the diet of both mussel species. IsoSource revealed that Cladophora was the primary assimilated food source for both species across the study period. Although assimilated diets were not different between control and treatment areas, diets were, however, influenced by Cladophora availability across time. The results of this study indicate that, during bloom conditions, Cladophora is the primary carbon source for both A. plicata and E. dilatata and may form the base of food webs in the upper Green River

Describing Historical Images: Improving Access to Digital Collections with Local Subjects

Libraries are at the forefront of creating rich quality metadata to ensure communities can access, learn, and understand their shared histories. The Metadata and Monographic Resources Team (MMRT) is tasked with describing and providing access points to Clemson Libraries’ Digital Collections. Metadata decisions made by MMRT affect how community members discover, access, and use these materials. Photographic images, in particular, pose challenges if they lack descriptive information or historical context. If descriptions are provided, they often align with the historically white male majority, naming high level individuals and leaving out minority and marginalized peoples. This poster covers challenges and decisions MMRT made to improve inclusive access to the Clemson University Historical Images by harnessing the power of local subject headings. This includes steps metadata specialists take to research image content, identify knowledge gaps, and create and apply new local subjects. Hard questions needed to be answered. For example, how do we normalize and control our local subjects to ensure consistent application? How detailed of a description do we provide to contextualize an image for researchers? Our current goal is to create a sustainable descriptive process that is consistently applied across a collection to support researcher needs. This poster will also discuss future hopes and goals, such as creating a globally accessible, shareable, and reusable local subject vocabulary for institutions beyond Clemson. The local subject approach could be useful for any type of library or cultural heritage institution looking to digitize and describe their image collections

Clemson’s Past Digitized: The Future of Archival Access

Libraries are at the forefront of creating rich quality metadata to ensure a future where communities access, learn, and understand their shared histories. The Metadata and Monographic Resources Team (MMRT) is tasked with describing and providing access points to Clemson Libraries’ Digital Collections. Consisting of digitized historic materials from Special Collections and Archives, Digital Collections provides a globally accessible avenue for our communities to explore Clemson’s past. Metadata decisions made by MMRT affect how community members discover, access, and use these materials. This poster covers metadata challenges and decisions we made to improve access to one digital collection, Clemson University Historical Images

PLECOPTERA OR STONEFLIES (INSECTA) OF INDIANA: DIVERSITY AND CONSERVATION STATUS OF SPECIES

Stoneflies (Plecoptera) are indicators of water quality and have been lost in dramatic numbers from Midwest states, including Indiana. This study synthesizes over 5,000 specimen level records from museums and recent fieldwork to build a current species list, assess watershed level species richness, and calculate state level conservation assessments using NatureServe’s Conservation Rank Calculator. Results include 1,050 positive occurrence records that yielded 92 species. Among these is one recently described species, a new species not yet described, and three previously described species new to Indiana. We have also found additional locations for rare species and confirmed the presence of a few species thought to be extirpated. United States Geological Survey Hierarchical Unit Code scale 6 (HUC6) drainages with the highest species richness values were the Patoka-White (73 species), Lower Ohio-Salt (60 species), and the Wabash River (57 species). The other seven drainages produced from five to 28 species, being limited by low gradient streams due to lake plain landscapes and by stream nutrient enrichment from agriculture. Eleven species were rated as extirpated or presumed extirpated, leaving 81 extant species. Of these, 17 were rated as critically imperiled (S1), 26 imperiled (S2), 25 vulnerable (S3), while only 13 species were rated as secure (S4 & S5). Watersheds and specific streams were discussed for their ability to support individual species or rich assemblages.Indianapolis Zoo funded via Indiana Department of Natural Resourcesunpublishednot peer reviewedOpe