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Life Sciences Commons

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Zoology

SIT Graduate Institute/SIT Study Abroad

2020

Articles 1 - 5 of 5

Full-Text Articles in Life Sciences

Macroinvertebrate Community And Temperature Changes In A Michigan Stream, Nyika Campbell Apr 2020

Macroinvertebrate Community And Temperature Changes In A Michigan Stream, Nyika Campbell

Independent Study Project (ISP) Collection

As the climate warms, global biodiversity is plummeting and extinction rates are rising (Jenkins, 2003). Freshwater ecosystems specifically are experiencing huge losses in diversity (Jenkins, 2003; Ormerod et al., 2010; Collier et al., 2016). Conservation of invertebrates is particularly urgent because they are foundational to the trophic systems in streams and lakes, comprising 95% of all species on earth (Titley et al., 2017), and over 60% of biodiversity in freshwater ecosystems (Collier et al., 2016). Through analysis of both my own field measurements and historical data I seek to gain a preliminary understanding of temperature and macroinvertebrate community changes that …


Parásitos Gastrointestinales De Tierra Del Fuego, Argentina, Sarah Martínez Apr 2020

Parásitos Gastrointestinales De Tierra Del Fuego, Argentina, Sarah Martínez

Independent Study Project (ISP) Collection

Este trabajo intentó encontrar helmintos comunes, especialmente compartidos, en cuatro carnívoros patagónicos del sur con distribuciones geográficas superpuestas y dos carnívoros patagónicos del norte, y esbozar el análisis fecal y los métodos de identificación morfológica para futuros investigadores. El estudiante encontró solo un parásito helminto compartido entre cualquier otra especie y la nutria nativa del sur del río, a pesar de una superposición en el hábitat con el visón americano invasivo, pero esto puede deberse a un bajo recuento de estudios regionales previos de helmintos en cualquiera de las especies. Se encontraron múltiples parásitos en las cuatro especies hospederas de …


Surviving Under The Reign Of El Niño Southern Oscillation: An Analysis Of The Effects Of Extreme El Niño Events On The Oceanographic And Biological Environment Of The Galápagos Islands, Ava Mcilvaine Apr 2020

Surviving Under The Reign Of El Niño Southern Oscillation: An Analysis Of The Effects Of Extreme El Niño Events On The Oceanographic And Biological Environment Of The Galápagos Islands, Ava Mcilvaine

Independent Study Project (ISP) Collection

El Niño Southern Oscillation (ENSO) is commonly known as the atmospheric and oceanographic powerhouse of the Southern Pacific Ocean. From phytoplankton to apex predators, ENSO controls the stability of species’ populations within this biodiverse ocean environment. El Niño’s 9-15 month alteration of the heat storage in the tropical Pacific drastically shifts the temperature, nutrient, and circulation gradient its marine life is accustomed to. A single degree change in the ocean’s surface layer temperature can have large consequences for marine species, and El Niño is commonly associated with Sea Surface Temperature Anomalies (SSTAs) between 2°- 6° Celsius. The potential danger El …


The Current State Of Research On The Global Amphibian Epidemic, Chytridiomycosis: A Systematic Literature Review And View Into The Future Of The Field, Emily Dealto Apr 2020

The Current State Of Research On The Global Amphibian Epidemic, Chytridiomycosis: A Systematic Literature Review And View Into The Future Of The Field, Emily Dealto

Independent Study Project (ISP) Collection

Recent years have shown a rapid decline in global frog populations. Among other issues, one main cause of these declines has been linked to chytridiomycosis, a disease caused by the fungus Batrachochytrium dendrobatidis, or Bd. The discovery of this fungus is relatively recent in the field of herpetology, and thus there is much still unknown about the disease such as its distribution and what causes certain areas and species to be more susceptible to it. A systematic literature review was conducted to see where the state of the research is currently, in order to gain a better view of the …


Two (Or More) Viruses In One Bat: A Systematic Quantitative Literature Review Of Viral Coinfection In Bats, Eli J. Kaufman Apr 2020

Two (Or More) Viruses In One Bat: A Systematic Quantitative Literature Review Of Viral Coinfection In Bats, Eli J. Kaufman

Independent Study Project (ISP) Collection

Viral coinfection is an important topic in pathogen dynamics, and can increase viral shedding and change disease outcomes. As bats are carriers of important zoonoses, such as the SARS coronaviruses, rabies, and other deadly viruses, knowing more about their coinfection dynamics is important. This quantitative systematic literature review sought to show how many papers reported bat viral coinfections, and created three databases. The first database, the SQLR database was based on searches for coinfections. The second database, the Astrovirus database was to determine how much of the literature was being missed by examining a single viral family more in depth …