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Articles 1 - 7 of 7
Full-Text Articles in Life Sciences
Effects Of Infanticide Risk And Timber Harvest On American Black Bear Space Use, D. Cody Norton
Effects Of Infanticide Risk And Timber Harvest On American Black Bear Space Use, D. Cody Norton
All NMU Master's Theses
Space use is an important aspect of bear ecology that maybe influenced by infanticide risk and timber harvest. I used generalized linear mixed models (GLMM) to determine if female American black bear (Ursus americanus) space use was consistent with avoidance behavior to reduce infanticide risk in the Upper Peninsula of Michigan during the 2009–2011 and 2013–2014 breeding seasons. Females with cubs occupied core areas and home ranges of similar size and relative probability of male use to females without cubs. Additionally, females with cubs did not reduce movements during times of day when male movements were greatest. Female …
Evolution Of Freshwater Crabs In Lake Malawi And The Lake Malawi Basin In The East African Rift Valley, Emily Johnson
Evolution Of Freshwater Crabs In Lake Malawi And The Lake Malawi Basin In The East African Rift Valley, Emily Johnson
All NMU Master's Theses
Lake Malawi is the southernmost lake in the East African Rift Valley and is home to a single species of freshwater crab, the Malawi Blue Crab. Little is known about species diversity and the phylogenetic relationships of the freshwater crabs of Lake Malawi, in contrast to the lake’s highly-diverse cichlid fish species flocks. The Malawi Blue Crab is presently assigned to Potamonautes lirrangensis (Rathbun, 1904) sensu lato, which was originally described from a single female specimen from the D. R. Congo. While the distribution of P. lirrangensis s. l. ranges from the Congo River basin to other Rift Valley lakes, …
Seasonal Changes In Black-Capped Chickadee (Poecile Atricapillus) Social Structure And Gargle Vocalizations, James Vanorman
Seasonal Changes In Black-Capped Chickadee (Poecile Atricapillus) Social Structure And Gargle Vocalizations, James Vanorman
All NMU Master's Theses
Many organisms form social groups for many different reasons. Individuals within a group gain benefits from having a way of effectively communicating with their group, especially in organisms that maintain their social affiliations for long periods of time. In birds, vocalizations are the main means of communicating among individuals. When there are multiple groups of birds in an area, each group could share vocalizations. This sharing can then create local dialects. Black-capped chickadees (Poecile atricapillus) are small songbirds of temperate habitats of North America that group together in larger flocks every winter. Dialects of the gargle vocalization have …
Understanding Neglect Of Plant Biology Education In Michigan Middle Schools, Kim Smith
Understanding Neglect Of Plant Biology Education In Michigan Middle Schools, Kim Smith
All NMU Master's Theses
The purpose of this study was to identify historical trends of neglect in plant biology education, their continuation today in Michigan middle school classrooms, and to uncover reasons for this neglect. A content analysis of state and national science standards and an online survey of Michigan middle school life science teachers were conducted. Findings showed a trend of increasing references in national standards from animals or plants to general organisms, as well as a decrease in the overall number of specific references in the standards. The data also revealed that nearly half of the teachers surveyed spent less than ten …
The Effects Of Shoe Type On Biomechanical And Physiological Responses To Stepping And Inclined Walking, Ashley L. Vansumeren
The Effects Of Shoe Type On Biomechanical And Physiological Responses To Stepping And Inclined Walking, Ashley L. Vansumeren
All NMU Master's Theses
The purpose of this study was to examine the effect of hiking shoes and hiking boots on the biomechanical responses to a stepping task and physiological responses to an inclined walking task. Participants (n = 16) performed six two minute stepping trials at a stepping rate of 72 bpm; three trials in hiking boots and three trials in hiking shoes. Following the stepping task, participants (n = 19) walked at 3.0 mph and 10% grade for five minutes in hiking shoes and hiking boots. Lower limb joint angles and moments were calculated using Visual 3D. Physiological data was averaged over …
Reassessment Of The Extinction Risk Of The Neotropical Freshwater Crabs Of The Family Pseudothelphusidae, Ada Acevedo Alonso
Reassessment Of The Extinction Risk Of The Neotropical Freshwater Crabs Of The Family Pseudothelphusidae, Ada Acevedo Alonso
All NMU Master's Theses
The Neotropical region is one of the world’s biodiversity hotspots, and its freshwater crabs are notably diverse, and are represented by two families, Pseudothelphusidae and Trichodactylidae. This study focuses on this region’s highly diverse Pseudothelphusidae which includes 48 genera and 289 species. The 2008 IUCN global conservation assessment found 15.5% of the Pseudothelphusidae to be threatened with extinction and projected that in the worst-case scenario (if all of the Data Deficient species turned out to be threatened), the number of threatened species would be significantly higher. In the last decade several new species of pseudothelphusids have been described, and more …
Behavior, Nest Site Selection And Success Of Black Terns (Chlidonias Niger), Dawn Marsh
Behavior, Nest Site Selection And Success Of Black Terns (Chlidonias Niger), Dawn Marsh
All NMU Master's Theses
The Black Tern (Chlidonias niger) population has markedly declined over several decades in northern North America, the causes of which are still largely unknown. I monitored nest success and wetland use by Black Terns in three colony sites in northern Michigan throughout 2017 and 2018 and used traditional survey methods coupled with nest cameras to document Black Tern nest success and mortality events. Colony sites included in this study were experiencing invasion by non-native plant species including Phragmites, hybrid and narrow-leaved cattail (Typha spp.), and European frog-bit (Hydrocharis morus-ranae). Statistically significant differences (P …