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Articles 1 - 6 of 6
Full-Text Articles in Life Sciences
Monitoring Fine-Scale Forest Health Using Unmanned Aerial Systems (Uas) Multispectral Models, Benjamin T. Fraser, Russell G. Congalton
Monitoring Fine-Scale Forest Health Using Unmanned Aerial Systems (Uas) Multispectral Models, Benjamin T. Fraser, Russell G. Congalton
Faculty Publications
Forest disturbances—driven by pests, pathogens, and discrete events—have led to billions of dollars in lost ecosystem services and management costs. To understand the patterns and severity of these stressors across complex landscapes, there must be an increase in reliable data at scales compatible with management actions. Unmanned aerial systems (UAS or UAV) offer a capable platform for collecting local scale (e.g., individual tree) forestry data. In this study, we evaluate the capability of UAS multispectral imagery and freely available National Agricultural Imagery Program (NAIP) imagery for differentiating coniferous healthy, coniferous stressed, deciduous healthy, deciduous stressed, and degraded individual trees throughout …
Cetacean Acousticwelfare In Wild And Managed-Care Settings: Gaps And Opportunities, Paige E. Stevens, Heather Hill, Jason N. Bruck
Cetacean Acousticwelfare In Wild And Managed-Care Settings: Gaps And Opportunities, Paige E. Stevens, Heather Hill, Jason N. Bruck
Faculty Publications
Cetaceans are potentially at risk of poor welfare due to the animals’ natural reliance on sound and the persistent nature of anthropogenic noise, especially in the wild. Industrial, commercial, and recreational human activity has expanded across the seas, resulting in a propagation of sound with varying frequency characteristics. In many countries, current regulations are based on the potential to induce hearing loss; however, a more nuanced approach is needed when shaping regulations, due to other non-hearing loss effects including activation of the stress response, acoustic masking, frequency shifts, alterations in behavior, and decreased foraging. Cetaceans in managedcare settings share the …
Brown Meets Green: Light And Nutrients Alter Detritivore Assimilation Of Microbial Nutrients From Leaf Litter, Taylor L. Price, Jennifer Harper, Steven N. Francoeur, Halvor M. Halvorson, Kevin A. Kuehn
Brown Meets Green: Light And Nutrients Alter Detritivore Assimilation Of Microbial Nutrients From Leaf Litter, Taylor L. Price, Jennifer Harper, Steven N. Francoeur, Halvor M. Halvorson, Kevin A. Kuehn
Faculty Publications
In aquatic detrital-based food webs, research suggests that autotroph-heterotroph microbial interactions exert bottom-up controls on energy and nutrient transfer. To address this emerging topic, we investigated microbial responses to nutrient and light treatments during Liriodendron tulipifera litter decomposition and fed litter to the caddisfly larvae Pycnopsyche sp. We measured litter-associated algal, fungal, and bacterial biomass and production. Microbes were also labeled with 14C and 33P to trace distinct microbial carbon (C) and phosphorus (P) supporting Pycnopsyche assimilation and incorporation (growth). Litter-associated algal and fungal production rates additively increased with higher nutrient and light availability. Incorporation of microbial P …
Effects Of Nutrient Management Scenarios On Marine Food Webs: A Pan-European Assessment In Support Of The Marine Strategy Framework Directive, Chiara Piroddi, Ekin Akoglu, Eider Andonegi, Jacob W. Bentley, Igor Celić, Marta Coll, Donna Dimarchopoulou, René Friedland, Kim De Mutsert, Raphael Girardin, Elisa Garcia-Gorriz, Bruna Grizzetti, P. Y. Hernvann, Johanna J. Heymans, Bärbel Müller-Karulis, Simone Libralato, Christopher P. Lynam, Diego Macias, Svetla Miladinova, Fabien Moullec, Andreas Palialexis, Ove Parn, Natalia Serpetti, Cosimo Solidoro, Jeroen Steenbeek, Adolf Stips, Maciej T. Tomczak, Morgane Travers-Trolet, Athanassios C. Tsikliras
Effects Of Nutrient Management Scenarios On Marine Food Webs: A Pan-European Assessment In Support Of The Marine Strategy Framework Directive, Chiara Piroddi, Ekin Akoglu, Eider Andonegi, Jacob W. Bentley, Igor Celić, Marta Coll, Donna Dimarchopoulou, René Friedland, Kim De Mutsert, Raphael Girardin, Elisa Garcia-Gorriz, Bruna Grizzetti, P. Y. Hernvann, Johanna J. Heymans, Bärbel Müller-Karulis, Simone Libralato, Christopher P. Lynam, Diego Macias, Svetla Miladinova, Fabien Moullec, Andreas Palialexis, Ove Parn, Natalia Serpetti, Cosimo Solidoro, Jeroen Steenbeek, Adolf Stips, Maciej T. Tomczak, Morgane Travers-Trolet, Athanassios C. Tsikliras
Faculty Publications
Eutrophication is one of the most important anthropogenic pressures impacting coastal seas. In Europe, several legislations and management measures have been implemented to halt nutrient overloading in marine ecosystems. This study evaluates the impact of freshwater nutrient control measures on higher trophic levels (HTL) in European marine ecosystems following descriptors and criteria as defined by the Marine Strategy Framework Directive (MSFD). We used a novel pan-European marine modeling ensemble of fourteen HTL models, covering almost all the EU seas, under two nutrient management scenarios. Results from our projections suggest that the proposed nutrient reduction measures may not have a significant …
Identification And Functional Analysis Of Thadh1 And Thadh4 Genes Involved In Tolerance To Waterlogging Stress In Taxodium Hybrid ‘Zhongshanshan 406’, Lei Xuan, Jianfeng Hua, Fan Zhang, Zhiquan Wang, Xiaoxiao Pei, Ying Yang, Yunlong Yin, David Creech
Identification And Functional Analysis Of Thadh1 And Thadh4 Genes Involved In Tolerance To Waterlogging Stress In Taxodium Hybrid ‘Zhongshanshan 406’, Lei Xuan, Jianfeng Hua, Fan Zhang, Zhiquan Wang, Xiaoxiao Pei, Ying Yang, Yunlong Yin, David Creech
Faculty Publications
The Taxodium hybrid ‘Zhongshanshan 406’ (T. hybrid ‘Zhongshanshan 406’) [Taxodium mucronatum Tenore × Taxodium distichum (L.). Rich] has an outstanding advantage in flooding tolerance and thus has been widely used in wetland afforestation in China. Alcohol dehydrogenase genes (ADHs) played key roles in ethanol metabolism to maintain energy supply for plants in low-oxygen conditions. Two ADH genes were isolated and characterized—ThADH1 and ThADH4 (GenBank ID: AWL83216 and AWL83217—basing on the transcriptome data of T. hybrid ‘Zhongshanshan 406’ grown under waterlogging stress. Then the functions of these two genes were investigated through transient expression and overexpression. The results showed that the …
Swimming Against The Flow: Environmental Dna Can Detect Bull Sharks (Carcharhinus Leucas) Across A Dynamic Deltaic Interface, James Marcus Drymon, Katherine E. Schweiss, Emily A. Seubert, Ryan N. Lehman, Toby S. Daly-Engel, Mariah Pfleger, Nicole M. Phillips
Swimming Against The Flow: Environmental Dna Can Detect Bull Sharks (Carcharhinus Leucas) Across A Dynamic Deltaic Interface, James Marcus Drymon, Katherine E. Schweiss, Emily A. Seubert, Ryan N. Lehman, Toby S. Daly-Engel, Mariah Pfleger, Nicole M. Phillips
Faculty Publications
© 2020 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd Human activities in coastal areas are accelerating ecosystem changes at an unprecedented pace, resulting in habitat loss, hydrological modifications, and predatory species declines. Understanding how these changes potentially cascade across marine and freshwater ecosystems requires knowing how mobile euryhaline species link these seemingly disparate systems. As upper trophic level predators, bull sharks (Carcharhinus leucas) play a crucial role in marine and freshwater ecosystem health. Telemetry studies in Mobile Bay, Alabama, suggest that bull sharks extensively use the northern portions of the bay, an estuarine–freshwater interface known …