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Articles 1 - 7 of 7
Full-Text Articles in Life Sciences
The Effects Of Road Salt (Nacl), Predation, And Competition On The Growth And Community Interactions Of Spotted Salamanders (Ambystoma Maculatum) And Wood Frogs (Lithobates Sylvaticus), Melissa Ocampo, Catherine A. Chuirazzi, Mizuki Takahashi
The Effects Of Road Salt (Nacl), Predation, And Competition On The Growth And Community Interactions Of Spotted Salamanders (Ambystoma Maculatum) And Wood Frogs (Lithobates Sylvaticus), Melissa Ocampo, Catherine A. Chuirazzi, Mizuki Takahashi
Faculty Journal Articles
Road deicing salts are frequently used in northern regions of the world during the winter and early spring months. As a result, a significant portion of road runoff into surrounding aquatic habitats contains road deicing salts. Previous studies found road salt contaminations in vernal pools that pond-breeding amphibians commonly use, including spotted salamanders (Ambystoma maculatum) and wood frogs (Lithobates sylvaticus). Studies have examined the impact of road salt on both amphibian species, but to our knowledge no previous studies have examined how road salt impacts the interspecific competition between both amphibians. We hypothesized that road salt would negatively impact growth …
Importance Of Instream Habitat To Recruitment And Community Structure Of Aquatic Invertebrates, Catherine R. Billé
Importance Of Instream Habitat To Recruitment And Community Structure Of Aquatic Invertebrates, Catherine R. Billé
Master’s Theses
This thesis investigates how mechanisms of colonization by aquatic insects, both by ovipositing adults and or larval drift, operate at either micro-, meso-, or macro-scales to influence larval community assemblage in streams. Our study took place in a forested floodplain stream characterized by uniform soft clay and loose detritus substrate. Within this study reach we built three sets of riffles, with each set comprised of three identical riffles built either 15, 10, or 5 m apart. We examined microscale influences on community assemblage by studying recruitment of egg masses to our constructed riffles. We found that riffle habitat additions were …
Lepidopteran Granivory Reduces Seed Counts In A Rare Species Of Riparian Scour Prairies, Cheyenne Moore, Angela J. Mcdonnell, Scott Schuette, Christopher T. Martine
Lepidopteran Granivory Reduces Seed Counts In A Rare Species Of Riparian Scour Prairies, Cheyenne Moore, Angela J. Mcdonnell, Scott Schuette, Christopher T. Martine
Faculty Journal Articles
In Pennsylvania Baptisia australis var. australis is found along only four waterways: the Allegheny River, Youghiogheny River, Clarion River, and Red Bank Creek. Because of its limited distribution and small number of extant populations, the species is considered state-threatened in Pennsylvania. In addition, the riparian prairie habitat that Pennsylvania Baptisia australis var. australis is restricted to is also in decline and considered vulnerable. Because of these conservation concerns, insights into the natural history of the taxon in the state is valuable and will inform conservation efforts. Field surveys and fruit collections along the Allegheny River and herbarium collections were used …
Sylvan Dell Nature Preserve Project, Brian Quinn, Katie Wisotsky, Huthaifa Aladwan
Sylvan Dell Nature Preserve Project, Brian Quinn, Katie Wisotsky, Huthaifa Aladwan
Sylvan Dell Field Station Student Projects
The Sylvan Dell Nature Preserve and Farm in South Williamsport, PA. Sylvan Dell is a 229 acre plot of farmland that contains a wetland on the south section of the property. It lies just south of the West Branch of the Susquehanna River. The first humans we know of to settle on this land were the Susquehannock and later the Haudenosaunee (Iroquois) Native Americans. In the late 18th century, white settlers took the land away from the Haudenosaunee. In the 20th century, the famous ornithologist Robert Porter Allen was influenced by the broad range of bird species that would visit …
Temperate Eurasian Origins Of Hawaiian Chenopodium (Amaranthaceae) Plus Description Of A New Species Endemic To Moloka‘I, Jason T. Cantley, Angela J. Mcdonnell, J Branson, S R. Long, W Garnett, Christopher T. Martine
Temperate Eurasian Origins Of Hawaiian Chenopodium (Amaranthaceae) Plus Description Of A New Species Endemic To Moloka‘I, Jason T. Cantley, Angela J. Mcdonnell, J Branson, S R. Long, W Garnett, Christopher T. Martine
Faculty Journal Articles
Chenopodium taxa of Hawai‘i are tetraploids distinguished from other members of the circumglobally distributed genus by minute morphological characters. Because of these reasons, the geographic origin of Hawaiian Chenopodium has remained unclear. Across the Hawaiian Archipelago, Chenopodium taxa are morphologically variable and grow in highly disparate xeric habitats, especially in terms of precipitation, temperature, wind, salt spray, and solar irradiation. Habitats include dry subalpine shrublands, sandy beach strand of atolls in the Northwest Hawaiian Islands, dry forests, and precipitously tall sea cliffs of northwestern Moloka‘i. From the Moloka‘i sea cliffs, which are battered by high energy winds, salt spray, and …
Phylogeny Of The Australian Solanum Dioicum Group Using Seven Nuclear Genes: Testing Symon’S Fruit And Seed Dispersal Hypotheses., Christopher T. Martine, Ingrid E. Jordon-Thaden, Angela J. Mcdonnell, Jason T. Cantley, Daniel S. Hayes, Morgan D. Roche, Emma S. Frawley, Ian S. Gilman, David C. Tank
Phylogeny Of The Australian Solanum Dioicum Group Using Seven Nuclear Genes: Testing Symon’S Fruit And Seed Dispersal Hypotheses., Christopher T. Martine, Ingrid E. Jordon-Thaden, Angela J. Mcdonnell, Jason T. Cantley, Daniel S. Hayes, Morgan D. Roche, Emma S. Frawley, Ian S. Gilman, David C. Tank
Faculty Journal Articles
The dioecious and andromonoecious Solanum taxa (the “S. dioicum group”) of the Australian Monsoon Tropics have been the subject of phylogenetic and taxonomic study for decades, yet much of their basic biology is still unknown. This is especially true for plant-animal interactions, including the influence of fruit form and calyx morphology on seed dispersal. We combine field/greenhouse observations and specimen-based study with phylogenetic analysis of seven nuclear regions obtained via a microfluidic PCR-based enrichment strategy and high-throughput sequencing, and present the first species-tree hypothesis for the S. dioicum group. Our results suggest that epizoochorous trample burr seed …
1st Susquehanna River Symposium Program, Bucknell Center For Sustainability And The Environment
1st Susquehanna River Symposium Program, Bucknell Center For Sustainability And The Environment
Susquehanna River Symposium -- Conference materials
From the Branches to the Confluence : The Upper Susquehanna River Basin and its Communities held September 23, 2006. The six page program lists panel discussions, presentations, and abstracts. Topics included environmental science, acid mine drainage, environmental protection and restoration, the river and community, historical geography, and environmental humanities.