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Articles 1 - 4 of 4
Full-Text Articles in Biology
Creating A Learning Community In The Sciences, Bart De Stasio, Beth De Stasio, Brian Piasecki
Creating A Learning Community In The Sciences, Bart De Stasio, Beth De Stasio, Brian Piasecki
Diversity Conference 2017
Science is a collaborative discipline that is best learned through discussion, experimentation and group activity. But several groups of students—particularly students of color, first generation college students and some international students— are often marginalized in our classrooms, labs and are left out of study groups. Their voices aren’t heard, their points of view and interpretations aren’t always appreciated and the learning of these students is thwarted. To address these issues, we have been involved in forming and designing two groups that have been functioning for the past two years: LEDS (Lawrentians Enhancing Diversity in the Sciences) and BioCore, a supplementary …
The Weevil Next Door: Exploring The Impact Of Associational Effects On C. Pitcheri To Better Biological Control Practices, Tina Czaplinska
The Weevil Next Door: Exploring The Impact Of Associational Effects On C. Pitcheri To Better Biological Control Practices, Tina Czaplinska
Lawrence University Honors Projects
Lake Michigan dwelling dune thistle, Circium pitcheri, is a federally threatened plant, whose reproduction is affected by a non-native weevil, Larinus planus. Originally introduced as a biological control agent to combat the spread of Canada thistle, Circium arvense, this weevil is instead using C. pitcheri as a host for its larvae. Associational susceptibility is an important factor to consider in hopes of preventing the damage to this endangered plant. The goal of this study was to observe L. planus behavior to determine why there is a correlation between increased density of beach grass and high levels of C. …
A Spiny Water Flea Invasion And Effects On The Zooplankton Community In Southern Green Bay, Lake Michigan, Casey Ann Merkle
A Spiny Water Flea Invasion And Effects On The Zooplankton Community In Southern Green Bay, Lake Michigan, Casey Ann Merkle
Lawrence University Honors Projects
The spiny water flea (Bythotrephes longimanus) is an invertebrate aquatic invasive species (AIS) in the Great Lakes that competes with native fish species for zooplankton, perhaps contributing to a decline of fish populations or changes in zooplankton communities in Lake Michigan. Bythotrephes produce two types of eggs, immediately hatching versus resting eggs which are tolerant to harsh conditions and allow for rapid dispersal. We determined Bythotrephes population density and population dynamics in Green Bay during the summer months of 2015 and 2016. Population dynamics were similar at both sites in Green Bay in each year, with peak population …
Abiotic Conditions Of Rare Pitcher's Thistle Attract Selection By An Invasive Weevil, Monica Paniagua Montoya
Abiotic Conditions Of Rare Pitcher's Thistle Attract Selection By An Invasive Weevil, Monica Paniagua Montoya
Lawrence University Honors Projects
Plant associations occur when host selection of a focal plant is reduced or increased by the presence of another plant species. Larinus planus is an invasive weevil whose larvae feed in the flower heads of native and federally threatened Pitcher’s thistle (Cirsium pitcheri). Studies have linked the presence of neighboring plants to increased host selection of Pitcher’s thistle by the weevil, but the factors contributing to host selection remain unknown. In our study, we determined if there were differences among abiotic factors, host selection and weevil behavior at Pitcher’s thistles surrounded by beach grass, sand and at high …