Digital Commons Network^™

Vertebrates On The Brink As Indicators Of Biological Annihilation And The Sixth Mass Extinction, Gerardo Ceballos, Paul R. Ehrlich, Peter H. Raven

Harold W. Manter Laboratory: Library Materials

The ongoing sixth mass species extinction is the result of the destruction of component populations leading to eventual extirpation of entire species. Populations and species extinctions have severe implications for society through the degradation of ecosystem services. Here we assess the extinction crisis from a different perspective. We examine 29,400 species of terrestrial vertebrates, and determine which are on the brink of extinction because they have fewer than 1,000 individuals. There are 515 species on the brink (1.7% of the evaluated vertebrates). Around 94% of the populations of 77 mammal and bird species on the brink have been lost in …

Hidden In Plain Sight. How ‘Disturbing’ Features Found Within Two Peruvian Textile Fragments Have Turned Into A ‘Significant Guide’ For Conservation, Griet Kockelkoren, Emma Damen

PreColumbian Textile Conference VIII / Jornadas de Textiles PreColombinos VIII (2019)

Préserver non seulement ‘l’objet matériel’, mais préserver également les valeurs intrinsèques d’un objet n’est pas un nouveau concept dans la pratique de la conservation-restauration actuelle. Le défi de cette approche consiste à regarder au-delà de ce qui est visible à l’oeil nu et à déterminer les traces de signification qui sont présentes dans l’objet. Au début d’une recherche ou une conservation, les aspects sont inconnues et parfois bien déguisés. Les traces essentielles peuvent être très difficiles à évaluer et à valoriser, en particulier avec des objets textiles ayant servi à une ou plusieurs fins pratiques au cours de leur vie …

The Effects Of Phosphate On Larval Western Barred Tiger Salamanders (Ambystoma Mavortium), Lexy Polivanov, Dennis Ferraro

UCARE Research Products

This study seeks examine the effects of elevated phosphate levels on the larval stage of the Western Barred Tiger Salamander (Ambystoma mavortium). Hypothesis: Additional phosphate in the water will cause the larval salamanders to have a slower metamorphosis rate than the control group with no additional phosphates. This hypothesis is based off of research that showed that additional nitrogen in the water caused a slower growth rate in the Western Barred Tiger Salamander (Ambystoma mavortium) (Griffis-Kyle, 2007).

The hypothesis was rejected. The dates the larvae morphed alternated between treatment and control. The treatment metamorphosis was not …

The Trichoptera Of Panama Xiv. New Species Of Microcaddisflies (Trichoptera: Hydroptilidae) From Omar Torrijos Herrera National Park, Brian J. Armitage, Steven C. Harris

Insecta Mundi

Abstract. In 2017, a new project was begun to assess the biodiversity of national parks and forest reserves in the Republic of Panama. Designated “Proyecto Sistema de Producción Sostenible Conservación de la Biodiversidad (PSPSCB)”, this project is managed by Panama’s Ministerio de Ambiente. The first park sampled in 2017 was Omar Torrijos Herrera National Park (OTHNP). Trichoptera (Insecta) were collected at four locations using both Malaise traps and UV light traps. The rugged terrain and lack of access in this remote park limited the sampled area. Sampling included streams in both the Caribbean and Pacific drainages. Seven new species of …

Environmental Activism, Ellen Dexter, Lydia Dexter

Honors Expanded Learning Clubs

An after school book club that follows Greta Thunberg's book of speeches No One is Too Small to Make a Difference , as well as uses hands-on activities to teach the importance of environmental activism.

Conservation Of Bta-Mir-29b And Its Effect On Human Gene Expression, Anna Barent, Katie Meinders, Daniel Gutzmann, Audrey L. Atkin

UCARE Research Products

The purposeof this work was to examine conservation of miR-29b and its binding sites in target mRNAs as well as co-expression of bta-miR-29b in bovine milk exosomes and its target mRNAs in HEK293 cells

•miRNAs are often highly conserved across species and bind to target mRNAs resulting in decreased gene expression. •Bovine milk exosomes contain miRNAs and most of these miRNAs are identical to human miRNAs. •Because these miRNAs are so conserved, it is hypothesized that bovine miRNAs can regulate gene expression and be linked to disease risk.

•miR-29b is highly conserved. •Identified 17 experimentally validated miR-29b target mRNAs. •The …

The Effects Of Phosphate On The Metamorphosis Of Larval Western Barred Tiger Salamanders (Ambystoma Mavortium), Lexy Polivanov

Honors Theses

This investigation will collect data to assist in determining if elevated aquatic phosphate levels affects the metamorphosis rate of larval western barred tiger salamanders (Ambystoma mavortium). Monoammonium phosphate fertilizers are being used on crops in Nebraska (NDA, 2017). This area lines up with the area the western barred tiger salamanders are disappearing from (Damme, 2018). Monoammonium phosphate is made up of nitrogen and phosphate. There have been several studies showing how nitrogen is harmful to amphibians such as this salamander (Griffis-Kyle, 2007) (Griffis-Kyle & Richtie, 2007), but there have not been many showing how phosphate affects amphibian’s metamorphosis …

Preservation And Conservation Of Library Materials In The Digital Age: Challenges For Libraries In Nigeria., Eniekebi Ejiroghene

Library Philosophy and Practice (e-journal)

The paper aims to clarify preservation and restoration as steps to ensure the reuse of library resources in their original format for as long as possible. To this end, the causes of the deterioration of library materials such as poor paper quality, inadequate storage, rough handling, pests and knowledge of the incidence of a disaster, electronic means of preservation, challenges and strategies for preserving digital materials have been investigated and recommended, inter alia, that federal, state, local, private and multinational companies

Plains Zebra (Equus Quagga) Behaviour In A Restored Population Reveals Seasonal Resource Limitations, Charli De Vos, Alison J. Leslie, Jason I. Ransom

United States National Park Service: Publications

A once abundant species, plains zebra (Equus quagga), is declining across much of sub-Saharan Africa. Reintroduction efforts at Majete Wildlife Reserve, Malawi, have resulted in rapid population increases, but little is known about how such populations resemble natural populations socially or behaviourally, and what those attributes may reveal about restoration success. Incorporating behavioural knowledge into conservation efforts is an important tool for managing the effects of habitat fragmentation and resource competition. The aim of this study was to quantify the daylight time budget of both family and bachelor bands of reintroduced plains zebra to determine if such behaviours …

Editorial: Operationalizing The Concepts Of Resilience And Resistance For Managing Ecosystems And Species At Risk, Jeanne C. Chambers, Craig R. Allen, Samuel A. Cushman

School of Natural Resources: Faculty Publications

Ecological resilience is essential for maintaining ecosystem services in an era of rapid global change, but successful attempts to operationalize it for managing ecosystems at risk have been limited. Clear formulation and application of ecological resilience concepts can guide ecosystem management so that it enhances the capacity of ecosystems to resist and recover from disturbances and provides adaptive space for periods of ecological reorganization. As originally defined, ecological resilience measures the amount of perturbation required to change an ecosystem from one set of processes and structures to a different set of processes and structures, or the amount of disturbance that …

Placebo Bait Uptake Trial To Test Feasibility Of Polynesian Rat (Rattus Exulans) Eradication On Wake Atoll, Chris N. Niebuhr, Israel Leinbach, Thomas W. Mcauliffe, Dean K. Foster, Shane R. Siers

Proceedings of the Twenty-Ninth Vertebrate Pest Conference (2020)

Rodent eradications have contributed to the recovery of many threatened species, but challenges often exist for campaigns that occur on tropical islands when compared to more temperate regions. A post-operational review of a rat eradication operation on Wake Atoll indicated that certain areas, such as those with high alternative food abundance, may have contributed to the failure to remove all Polynesian rats. We conducted a nontoxic bait uptake trial to evaluate whether the maximum prescribed bait application rate for Brodifacoum-25W rodenticide pellets was sufficient to expose all rats to a lethal dose at three sites on Wake Atoll, including around …

The Effects Of Phosphate On The Metamorphosis Of Larval Western Barred Tiger Salamanders (Ambystoma Mavortium), Alexis Jean Polivanov

Department of Environmental Studies: Undergraduate Student Theses

This investigation will collect data to assist in determining if elevated aquatic phosphate levels affects the metamorphosis rate of larval western barred tiger salamanders (Ambystoma mavortium). Monoammonium phosphate fertilizers are being used on crops in Nebraska (NDA, 2017). This area lines up with the area the western barred tiger salamanders are disappearing from (Damme, 2018). Monoammonium phosphate is made up of nitrogen and phosphate. There have been several studies showing how nitrogen is harmful to amphibians such as this salamander (Griffis-Kyle, 2007) (Griffis-Kyle & Richtie, 2007), but there have not been many showing how phosphate affects amphibian’s metamorphosis …