Digital Commons Network^™

Developing Inside A Layer Of Germs—A Potential Role For Multiciliated Surface Cells In Vertebrate Embryos, Ryan R. Kerney

Biology Faculty Publications

This paper reviews current research on the microbial life that surrounds vertebrate embryos. Several clades are believed to develop inside sterile—or near-sterile—embryonic microhabitats, while others thrive within a veritable zoo of microbial life. The occurrence of embryo-associated microbes in some groups, but not others, is an under-appreciated transition (possibly transitions) in vertebrate evolution. A lack of comparable studies makes it currently impossible to correlate embryo-associated microbiomes with other aspects of vertebrate evolution. However, there are embryonic features that should instruct a more targeted survey. This paper concludes with a hypothesis for the role of multiciliated surface cells in amphibian and …

Interview With Bryan Hoke, Bryan Hoke, Alyssa Reyes, Zenon Martinez, Brittany Rocha

Community Historical Archaeology Project with Schools (CHAPS) Oral Histories

An interview with a Kieffer family member that explores their family history.

Exploring The Role Of Academic Social Networking Sites Amongst Lis Professionals: A Meta-Narrative Review, P.M. Naushad Ali, Sharaf Zehra, Priya Vaidya, Zainab Musheer

Library Philosophy and Practice (e-journal)

Academic Social Networking Sites (ASNS) has revolutionized the concept of knowledge sharing and publication pattern in academia. It offers a new paradigm to interrelate research scientists globally, influencing research communities' structure and crescendos (dynamics). This changing trend has attracted considerable attention in the research domain and the consequent impact on library & information science professionals. Due to the high operationalizing ability of these networking sites, it provides online services of collaboration and knowledge sharing. The present study reviewed 23 studies from the past that highlights the methodologies, usage pattern of ASNs, impact on professionals, different categories of services, and issues …

Prescribed Fire And Cattle Grazing To Manage Invasive Grasses For Cattle And Wildlife, C. H. Walther, J. Alfonso Ortega‐S., H. L. Perotto-Baldivieso, S. Rideout-Hanzak, D. B. Wester

IGC Proceedings (1977-2023)

Invasive grasses are in most cases introduced species able to outcompete native species. Buffelgrass (Cenchrus ciliaris), Guineagrass (Urochloa minima), and Old World bluestems (Dichanthium spp.) are typical examples of invasive species in southeastern United States. However, native grasses such as tanglehead (Heteropogon contortus) can become invasive and dominant in absence of cattle grazing just like any invasive species. Tanglehead and Kleberg bluestem (Dichanthium ischaemum) increased (p < 0.05) from 1.4 and 1.8% in 1999 to 2.7 and 3.6% in 2002 and then to 8.1 and 9.4% in 2009, respectively. Monocultures of invasive species have very little value for wildlife, and in the case of mature tanglehead its palatability for cattle is very low. Prescribed fire may be used to improve palatability of tanglehead for cattle, and cattle grazing may be used to improve plant species richness for wildlife. To evaluate the effects of prescribed fire and cattle grazing on cattle preference and the botanical composition of a plant community dominated by tanglehead, we burned 3 patches of approximately 0.5 ha in a pasture of 107 ha in October 2016. Two months before the prescribed burning was executed, 10 mother cows were placed in the pasture to graze continually. We fitted GPS collars on 8 cows and location readings were collected every 10 minutes. GPS recordings indicate that cattle used burned patches 4.5 times more after burning compared to before burning. Percent forage utilization of tanglehead was 52% in the burned patches compared to 6% in the control areas. Plant species richness increased from 2.53 to 8.33 plant species per 0.25 m², before and after burning, respectively, an increase of 330%. Prescribed fire and cattle grazing are valuable tools to increase tanglehead palatability and …

Nutrient Return From Plant Litter And Cattle Excretion Grazing On N-Fertilized Grass Or Grass-Legume Pastures In North Florida, Liza Garcia, D. M. Jaramillo, José C. B. Dubeux Jr., Lynn E. Sollenberger, João M. B. Vendramini, N. Dilorenzo, E. R. S. Santos, M. Ruiz-Moreno, L. M. D. Queiroz

IGC Proceedings (1977-2023)

Nutrient recycling via plant litter and livestock excreta is an important ecosystem service provided by grasslands. This study determined nutrient return via these pathways in three grazing systems. The experiment was conducted from May to October (2016 and 2017) and treatments were: 1) Nitrogen fertilized bahiagrass (Paspalum notatum Flügge) pastures (112 kg N ha^-1) during the warm-season, overseeded with a mixture (56 kg ha^-1 of each) of ‘FL 401’ cereal rye (Secale cereale, L.) and ‘RAM’ oat (Avena sativa, L.) during the cool-season (BGN); 2) Ecoturf Rhizoma peanut (Arachis glabrata Benth.)/bahiagrass …

Brazilian Pampa Rangelands: Challenges In The Face Of Soybean Expansion, J. G. Moriera, R. G. Maciel, Paulo D. Waquil, J. F. Tourrand

IGC Proceedings (1977-2023)

The Pampa biome extends throughout the Uruguayan territory, part of Brazil, Argentina and Paraguay. It is characterized by being a natural pastoral ecosystem, in which livestock represents the best option for sustainable use for food production purposes, and favors the conservation of its rangelands. In addition to contributing to the conservation of natural pastures, it was along with livestock activities that the gaucho's way of life was developed. However, the cultivation of soybeans and eucalyptus plantations in the Pampa in all its extension is the localized version of the global dynamics of valuing the production of agricultural commodities affecting various …

Modelling Grazing And Burning In Communal Rangelands To Help Understand Trade-Offs Between Production, Carbon, And Water, H. J. Hawkins, M. Moradzadeh, M. L. Vermeire, Farai Chikomba, L. Wu

IGC Proceedings (1977-2023)

Rangelands cover more than 80% of South Africa’s land area, providing critical ecosystem services, livelihoods and cultural values related to livestock. Communally owned rangelands are often overgrazed and subject to runaway fires but lack of data limits our understanding of how these threats impact production. In this transdisciplinary project, we use models to test hypotheses and predict future scenarios as a planning tool for resource-poor communal farmers. We think that moderate grazing and fire regimes will increase overall production and carbon sequestration with uncertain trade-offs for water and nutrient cycling. To test this, we trained two process-based biogeochemical models (DAYCENT …

The New Tendencies Of Environmental Impact Assessment Of Livestock Production: A Road Testing Of Leap/Fao Biodiversity Assessment Guidelines In Pastoral Systems In Uruguay, F. De Santiago, G. Pompozzi, M. Simó, Oscar Blumetto

IGC Proceedings (1977-2023)

After the publication of the “long shadow of cattle” report, ruminant production systems have received great pressure for their contributions in greenhouse gases (GHG). However, the environmental effects of human activities are much broader than GHG production and in some cases, there are positive contributions. In order to broaden the environmental perspective and with the encouragement of governments, the private sector and NGOs, LEAP-FAO has developed environmental assessment guidelines for the world's livestock production systems. This paper presents a road-testing of the Biodiversity Assessment Guideline at farm scale for six case studies in pastoral livestock systems in Uruguay. The producers …

Assessment Of Thermographic Imaging Systems On Small Unmanned Aerial Systems (Suas) To Identify Artificial Grassland Bird Nests, L. M. Hearon, J. M. Morrison

IGC Proceedings (1977-2023)

Grassland bird populations can be good indicator species of ecosystem health. However, their populations are declining at greater rates than any other group of birds. A well-established method of monitoring rapidly disappearing bird populations is by locating and identifying active nests. Studies quantifying grassland birds tend to have low statistical power due to low sample sizes, high labor costs, and high levels of disturbance - associated with difficulty finding nests. However, advances in small unmanned aerial systems (sUAS) and thermographic imaging technologies have the potential to improve efficiency and accuracy of locating nests, while causing minimal disruption. Early research has …

Bird Community Responses To Rest-Rotation Grazing In Western Canada's Grasslands, T. F. Döbert, J. A. Randall, M. Iravani, E. W. Bork, M. S. Boyce

IGC Proceedings (1977-2023)

Western Canada’s native grasslands support high levels of avian diversity including both resident and migrant species. Many grassland specialist bird populations, however, are in serious decline due to widespread habitat loss resulting from agricultural conversion and adverse land management. As the primary use on remaining grasslands, cattle grazing largely determines the availability and quality of bird species’ habitat, depending on the timing, intensity, and frequency of livestock use. While adaptive multi-paddock grazing (AMP, a short duration, high-intensity grazing system that prioritises plant recovery between grazing events) is growing in popularity, comprehensive assessments of bird diversity in relation to AMP grazing …

Comparing Empirical With Perceived Trends In Wildlife, Livestock, Human Population And Settlement Numbers In Pastoral Systems: The Greater Maasai Mara Ecosystem, Kenya, Juliet B. Kariuki, Joseph O. Ogutu, Shem C. Kifugo, Jully S. Senteu, Gordon Ojwang, Han Olff

IGC Proceedings (1977-2023)

Human activities are driving wildlife population declines worldwide. However, empirical understandings of their operation and consequences for wildlife populations and habitats are limited. We explored relationships between empirical and perceived wildlife and livestock population trends in Kenya using data on i) aerial monitoring of wildlife and livestock populations during 1977-2018, ii) human population censuses; and iii) semi-structured interviews with 338 male and female respondents from 250 households from four zones of the Greater Maasai Mara Ecosystem in 2019 and 2020. Wildlife numbers declined by 72.3% but sheep and goats increased by 306.4%. Yet nearly 50% of the interviewees perceived increases …

Effectiveness Of Agricultural Extension Human Wildlife Conflict Mitigation Strategies Among Small-Scale Maize (Zea Mays) Farmers In Laikipia West Sub County, Kenya, R. O. Nyamwamu, J. M. Ombati

IGC Proceedings (1977-2023)

Agriculture is critical in the achievement of food security, creation of employment opportunities, steering economic growth, and also a source of raw materials for agricultural industries in many Sub-Saharan countries. However, the small-scale farmers face various challenges which negatively affect farm productivity and production. Human-wildlife conflict is one of the most pressing challenges that small-scale maize farmers experience in some parts of Kenya. It arises from either people’s encroachment on wildlife habitats or the movement of wildlife from their natural habitat into the neighbouring farmland. The smallscale farmers use various agricultural extension strategies to mitigate the conflict. However, the effectiveness …

Wildlife Conservation Innovations In A Rangeland Under Rapid Change In Maasailand Of Kenya, N. Parmisa, R. S. Reid

IGC Proceedings (1977-2023)

Conservation efforts have often been designed without the benefit of the long-term, local knowledge held by pastoral people about rangelands and wildlife. Here, we present a case study of a rapidly changing pastoral landscape in Maasailand of Kenya, just south of Nairobi National Park. We will focus on pastoral innovations that both support pastoral livestock production and conserve wildlife at the same time, through biodiversity payment schemes (through land leasing), education, policy and appropriate technology.

The community described here established a land leasing program in 2000, to pay pastoral land owners to keep fences down and remove poaching snares to …

Ecotourism As A Means Of Sustaining Livelihood, Wildlife Management And Biodiversity Conservation-A Case In Nameri National Park Of Assam: India, Niranjan Das

IGC Proceedings (1977-2023)

Community-based Ecotourism (CBET) is an emerging concept. It is being discussed as an important tool for economically benefiting communities that have a feature that fulfils a tourist’s desire for uniqueness. Ecotourism is potentially important for communities reside nearby protected areas. Here, an attempt has been made to evaluate ecotourism initiatives in Nameri National Park, steps that have been introduced by the Assam (Bhorelli) Angling and Conservation Association (ABACA). This association began naturebased tourism ventures in 1956, bringing benefits to the local populace in terms of income, improved infrastructure, employment opportunities and exposure. The community’s capacity to facilitate resourcerelated conflicts has …

Social-Ecological Innovations And Outcomes Of Community-Based Conservation In Africa: Implications For The Future, K. A. Galvin

IGC Proceedings (1977-2023)

Community-based conservancies (CBCs) are growing in numbers throughout Africa, particularly in the arid and semi-arid (ASAL) regions where pastoralists raise livestock and live among much of Africa’s remaining wildlife. CBCs emerge around national parks and other protected areas of wildlife spaces apart from people. Community conservancies, in contrast to national parks, are land tenure and land use governance arrangements to conserve wildlife while providing for the livelihoods of African pastoralists. Some conservancies develop by communities in partnership with public agencies, while others are associated with non-government organizations and/or the private sector. Others are more top-down in origin, supported by large …

Tree Legumes As Sustainable Ecosystem Services In Livestock Systems, James P. Muir, C. E. Cooper, V. Corriher-Olson

IGC Proceedings (1977-2023)

Arboreal legumes provide multiple uses in pastures and rangelands. Trees directly and indirectly feed, house, doctor, and warm humans at minimal environmental cost through forage (fodder), timber, biofuel, medicines, as well as edible leaves, pods, and seeds. Leguminous trees, because they foster biological nitrogen fixation (BNF) and acquire deep-soil nutrients and moisture, compete less with herbaceous plants for shallow-horizon soil moisture and nutrients. Their ecosystem services (ES) are generally less obvious and quantifiable. These include converting CO₂ to sequestered C and released O₂ in N-poor soils where trees without BNF do not thrive. Other ES include shade for …

Conservation Innovation In Pastoral Lands Around The Globe: Challenges, Lessons And Opportunities, R. S. Reid

IGC Proceedings (1977-2023)

Pastoralists and ranchers have a long history of sustained management of rangelands around the world. Several decades ago, some pastoralists and ranchers started new alliances with environmental organizations, businesses and government agencies to diversify their approaches to land management to include what can be called ‘conservation’. These efforts highlight conserving aspects of rangeland ecosystems, but often have an equal or greater emphasis on supporting pastoral livelihoods and culture. This paper asks: What types of innovations are pastoralists now pursuing in ‘conservation’? How are these innovations performing?

This paper provides a synthesis of some of the types of conservation innovations being …

The Importance Of Forage Legume Inclusion In Agricultural Swards To Enhance Earthworm Activity And Water Infiltration Rates, A. Shnel, S. Tracy, O. Schmidt, P. Murphy, M. B. Lynch, C. Grace, T. M. Boland, H. Sheridan

IGC Proceedings (1977-2023)

Increased grassland productivity in temperate regions has largely been achieved through perennial ryegrass Lolium perenne (PRG), coupled with large quantities of nitrogen fertiliser. However, concern is growing regarding the negative implications of excessive dependence on nitrogen fertilisers. Research has demonstrated the benefits of legume inclusion on primary productivity, however, their potential to influence other processes is less well established.

Sampling was undertaken in autumn 2017 on twenty randomised plots representing five sward types, replicated four times. These had been established and managed by cutting since 2013. Sward types included: 1) PRG (250kg N ha^-1 yr^-1 ); 2) PRG; …

Closing The Data Gap: Protecting Biometric Information Under The Biometric Information Privacy Act And The California Consumer Protection Act, Eva-Maria Ghelardi

St. John's Law Review

(Excerpt)

Between May and June of 2014, Stacy Rosenbach bought her son, Alexander, a Six Flags season pass online. She submitted Alexander’s personal information and read that Alexander would complete the sign-up process at the park. No details described what the sign-up process would entail.

After showing his online receipt at Six Flags, Alexander was brought to an office to provide the customary thumb scan. Alexander’s thumb scan, along with the season pass card, was required to permit him to enter the various rides. He was not given any information about how his thumb scan would be stored or used …

Profile Of Celeste Volz Ford, Mary Frost

Online Journal of Space Communication

Profile of and interview with Celeste Volz Ford, Founder & CEO, Stellar Solutions, Inc.

From There To Here: Evaluating The Transition Of An International Advanced Pharmacy Practice Experience In London, Ishmum Hasan, Stephanie Hendricks, Michaela Todd, Grace Yun, Sotiris Antoniou, Monica Miller, Ellen Schellhase, Alexandra Van-Slageren

Purdue Journal of Service-Learning and International Engagement

Purdue University College of Pharmacy offers an international advanced pharmacy practice experience (APPE) in London, England, where student pharmacists have the opportunity to work with pharmacy specialists at St. Bartholomew’s Hospital. The COVID-19 pandemic has significantly impacted travel across the world and created the need to transition this experience from in-person to virtual.

Virtual interaction with international preceptors and revised research and clinical activities can provide students with a valuable learning experience.

Mentoring Black Teens During National Pandemics: Mutually Beneficial Service, Temitope F. Adeoye, Myson Burch, Terrell Glenn, Rachel Scarlett, De'shovon M. Shenault

Purdue Journal of Service-Learning and International Engagement

Black youth face systemic educational and social barriers that impede their development and achievement. Research shows that mentoring equips youth to tackle these barriers and use their racial background as an asset. Additionally, college students have limited opportunities to engage in long-term service to local communities. The Heads Up Teen Mentoring Program was begun in September 2019 to provide local Black teens access to Black role models committed to helping them achieve their goals. We currently serve five local Black teens and pair them with five Black graduate student mentors. We engage in monthly group and one-on-one sessions with our …

Hair Care Catered To You, Sarah Reynolds, Meg Sorg

Purdue Journal of Service-Learning and International Engagement

People of color face barriers in healthcare every day, and my goal was to address one of these barriers. Healthcare settings stock products that are tailored for Caucasian hair and skin, so I wanted to add products targeted for Black patients' skin and hair. I added shampoo and lotion to the supply closet of Peyton Manning Children's Hospital as well as bonnets and durags for the patients to wrap their hair in to protect it while they sleep or rest. African American hair and skin requires different care. This is something that often goes unnoticed by healthcare professionals, and I …

A Community Health Initiative: Health To The Power Of You, Stephanie Hendricks

Purdue Journal of Service-Learning and International Engagement

In April 2020, the COVID-19 pandemic impacted the number of visits to ambulatory care practices and was reported to have declined by nearly 60%. The extent of this decline is alarming as outpatient visits help manage chronic diseases in patients, such as diabetes, high blood pressure, and high cholesterol. This trend sparked an interest in pharmacist and student pharmacist, Dr. Cynthia Koh-Knox Sharp and Stephanie Hendricks, respectively, as it offered an opportunity to help serve the Greater Lafayette community. We created Health to the Power of You (Health^You), which targets two of Lafayette’s neglected populations: community members experiencing …

Adapting Global Service-Learning Project And Community Partnership Outcomes Using A “Tele-Engineering” Approach In Response To The Covid-19 Pandemic, Christiane Ley, Danielle Angert, Tessa Hudelson, Jordan Harris

Purdue Journal of Service-Learning and International Engagement

The Water Supply in Developing Countries (WSDC) service-learning course at Purdue University has fostered a strong partnership with the La Vega region in the Dominican Republic since 2012. During this time, an interdisciplinary group of engineering and science students has helped design drinking water treatment systems and the group has developed water, sanitation, and health (WASH) education materials. These WASH education and water safety approaches often have been conducted in person in the past. However, with the state of the COVID-19 pandemic and the inability to travel in the fall and spring semesters of the 2020–2021 academic year, the students …

Socially Differentiation In (Agro)Pastoral Climate Change Adaptation: Intersectional Perspectives On Socio-Technical Change In Kenya And Burkina Faso, Todd Crane, Lisa Nebié, Teresiah Ng’Ang’A

IGC Proceedings (1977-2023)

No abstract provided.

Revitalizing Pastoral Calendars: Snowcover, Seasonal Migration, And Pastoral Decisions From Alai Valley Of Kyrgyzstan, Daler Kaziev

IGC Proceedings (1977-2023)

Herding practices among semi-settled agropastoral communities in the Pamir-Alai Mountains of Central Asia are subject to seasonal variations, making climate change adaptation urgent. Livestock keeping is an essential part of the local economy in the Alai Valley of Kyrgyzstan. Focusing on collaborative efforts to develop traditional ecological calendars in the village of Sary-Mogol, Alai valley, Kyrgyzstan, this study seeks to demonstrate the relationship between snow and herding practices.There are four distinct seasonal migration patterns such as baarloo spring, summering jailoo, autumn kyzdoo and wintering kyshtoo. The relationship between these migration patterns and biophysical events such as snow accumulation …

The Effect Of Water Deficits During Flowering And Seed Production On Cultivars Of Subterranean Clover And Annual Medic, E. C. Wolfe, W. J. Collins, R. C. Rossiter, W. R. Stern

IGC Proceedings (1977-2023)

In improved pastures in inland southern Australia, the persistence and growth of annual pasture legumes depends in part on their ability to produce and conserve abundant seed for regeneration and production. For near-maximum seed production in spring, adequate soil water is needed for at least 70 days in subterranean clover (Trifolium subterraneum) and medic (Medicago) species. Water deficits during spring are a common occurrence, and they appear to be increasing in frequency. The effect of relatively short periods of water deficit during reproductive development has received some attention but the findings conflict. The present experiment was …

The Response Of Selected Temperate Forages To Increasing Summer Drought Conditions And High Summer Temperatures In Northern Victoria, Australia, M. E. Rogers, A. R. Lawson, K. B. Kelly, W. J. Wales, J. L. Jacobs

IGC Proceedings (1977-2023)

In the dairy region of northern Victoria, Australia, the performance of temperate perennial dairy pastures is often poor over summer due to a combination of high temperatures and limited water availability that can restrict dry matter production and plant survival. A series of field experiments examined the effects of heat and restricted irrigation (as a consequence of drought) on the growth and nutritive characteristics of selected forage species, and whether survival under experimental conditions was influenced by plant genotype, irrigation and grazing management strategies, as well as endophyte presence. The major focus was on perennial ryegrass.

Detailed sampling of perennial …

Effect Of Drought Stress On Fibre Digestibility Of Corn For Silage, G. Ferreira, C. L. Teets, A. M. Kingori, J. O. Ondiek

IGC Proceedings (1977-2023)

Limited information exists about the impact of drought stress on corn silage digestibility. The objective of this study was to determine the effect of irrigation on in situ NDF digestibility of corn tissues grown under controlled conditions in a greenhouse. Five commercial corn hybrids were planted in pots and grown in a greenhouse. Pots were subjected to an abundant or restricted irrigation regime. Leaf blades and stem internodes were collected from the upper and bottom portion of each hybrid. Tissue samples were incubated in the rumen of 3 rumen-cannulated cows for 0, 3, 6, 12, 24, 48, 96, and 240 …