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Articles 31 - 60 of 150
Full-Text Articles in Life Sciences
Spatial Use By Mammals Within Two State Parks In The Ozarks National Scenic Riverways, Benjamin Aaron Smith
Spatial Use By Mammals Within Two State Parks In The Ozarks National Scenic Riverways, Benjamin Aaron Smith
MSU Graduate Theses
A mammalian species inventory with comparisons between sampled sites was conducted via multiple methodologies to document presence of mammals at two Missouri state parks within the Ozark National Scenic Riverways. Camera traps, small mammal traps, acoustic detectors, and mist nets were used to detect species at the parks, and species similarity indices and occupancy analyses were used to discern use of space. A mammalian inventory was compiled for each area of inquiry. Greater diversity was found at the park with more variable habitat types. Bat activity was more in the park with a known hibernaculum, though species specific activity differed …
Landscape-Scale Differences Among Cities Alter Common Species’ Responses To Urbanization, Mason Fidino, Travis Gallo, Elizabeth W. Lehrer, Maureen H. Murray, Cria Kay, Heather A. Sander, Brandon Macdougall, Carmen M. Salsbury, Travis J. Ryan, Julia L. Angstmann, J. Amy Belaire, Barbara Dugelby, Chris Schell, Theodore Stankowich, Max Amaya, David Drake, Sheryl H. Hursh, Adam A. Ahlers, Jacque Williamson, Laurel M. Hartley, Amanda J. Zellmer, Kelly Simon
Landscape-Scale Differences Among Cities Alter Common Species’ Responses To Urbanization, Mason Fidino, Travis Gallo, Elizabeth W. Lehrer, Maureen H. Murray, Cria Kay, Heather A. Sander, Brandon Macdougall, Carmen M. Salsbury, Travis J. Ryan, Julia L. Angstmann, J. Amy Belaire, Barbara Dugelby, Chris Schell, Theodore Stankowich, Max Amaya, David Drake, Sheryl H. Hursh, Adam A. Ahlers, Jacque Williamson, Laurel M. Hartley, Amanda J. Zellmer, Kelly Simon
Scholarship and Professional Work - LAS
Understanding how biodiversity responds to urbanization is challenging, due in part to the single-city focus of most urban ecological research. Here, we delineate continent-scale patterns in urban species assemblages by leveraging data from a multi-city camera trap survey and quantify how differences in greenspace availability and average housing density among 10 North American cities relate to the distribution of eight widespread North American mammals. To do so, we deployed camera traps at 569 sites across these ten cities between 18 June and 14 August. Most data came from 2017, though some cities contributed 2016 or 2018 data if it was …
Monitoring Grassland And Dynamics In Mongolia, Troy Sternberg
Monitoring Grassland And Dynamics In Mongolia, Troy Sternberg
IGC Proceedings (1993-2023)
No abstract provided.
Impact Of Wildfire And Seeding On The Range Plant Community In The Dry Forests Of Southern British Columbia, W. Gardner, J. Karakatsoulis, P. Youwe
Impact Of Wildfire And Seeding On The Range Plant Community In The Dry Forests Of Southern British Columbia, W. Gardner, J. Karakatsoulis, P. Youwe
IGC Proceedings (1993-2023)
No abstract provided.
Grazing Disturbance A Benefit To Species Diversity In Re‐Established Native Grass Stands, Michael P. Schellenberg, Alan D. Iwaasa
Grazing Disturbance A Benefit To Species Diversity In Re‐Established Native Grass Stands, Michael P. Schellenberg, Alan D. Iwaasa
IGC Proceedings (1993-2023)
No abstract provided.
Effects Of Supplemental Feed And White‐Tailed Deer Density On Vegetation, Timothy Fulbright, Charles A. Deyoung, David G. Hewitt, Eric Grahmann, Reagan Gage, Ryan Darr, Don Draeger
Effects Of Supplemental Feed And White‐Tailed Deer Density On Vegetation, Timothy Fulbright, Charles A. Deyoung, David G. Hewitt, Eric Grahmann, Reagan Gage, Ryan Darr, Don Draeger
IGC Proceedings (1993-2023)
No abstract provided.
Influence Of Different Sampling Strategies On The Relationship Of Biodiversity And Grassland Primary Production, Liang Zhao, Huimin Yang, Zhongling Liu, Honglang Xiao
Influence Of Different Sampling Strategies On The Relationship Of Biodiversity And Grassland Primary Production, Liang Zhao, Huimin Yang, Zhongling Liu, Honglang Xiao
IGC Proceedings (1993-2023)
No abstract provided.
Relationships Between Vegetation And Soil Seed Banks Along A Center-To-Edge Gradient On A Tropical Coral Island, Yao Huang, Hai Ren, Jun Wang, Nan Liu, Shuguang Jian, Hongyue Cai, Dafeng Hui, Qinfeng Guo
Relationships Between Vegetation And Soil Seed Banks Along A Center-To-Edge Gradient On A Tropical Coral Island, Yao Huang, Hai Ren, Jun Wang, Nan Liu, Shuguang Jian, Hongyue Cai, Dafeng Hui, Qinfeng Guo
Biology Faculty Research
Few studies have focused on the relationships between vegetation and soil seed banks on small islands. To better understand the pattern and regeneration potential of seed banks on tropical coral islands, we measured environmental factors and the species composition, and species richness of soil seed banks and vegetation along a gradient from the center to the edges on East Island in the South China Sea. The results showed that the similarity between the species composition of vegetation and seed banks increased from the center to the edge. In the center, species richness in both vegetation and seed banks was positively …
Effects Of Different Utilization Levels On Species Richness Changes In Saral Grassland, Kurdistan Province, S. Gholinejad, M. Vafakhah, S. A. R. Mousavi
Effects Of Different Utilization Levels On Species Richness Changes In Saral Grassland, Kurdistan Province, S. Gholinejad, M. Vafakhah, S. A. R. Mousavi
IGC Proceedings (1993-2023)
No abstract provided.
Unravelling The Mechanisms Behind The Invasion Of An Introduced And Now Undesirable Grass Species, Jennifer Firn, Yvonne Buckley
Unravelling The Mechanisms Behind The Invasion Of An Introduced And Now Undesirable Grass Species, Jennifer Firn, Yvonne Buckley
IGC Proceedings (1993-2023)
No abstract provided.
Effects Of Traditional Range Enclosures And Seasonality On Herbaceous Plants Biodiversity In Southern Ethiopia, Ayana Angassa, G. Oba, R. B. Weladji
Effects Of Traditional Range Enclosures And Seasonality On Herbaceous Plants Biodiversity In Southern Ethiopia, Ayana Angassa, G. Oba, R. B. Weladji
IGC Proceedings (1993-2023)
No abstract provided.
Effects Of Pine Litter Raking On Plant Community Composition And Soil Seed Banks In Longleaf Pine Savannas, Jordan Andrew Winter
Effects Of Pine Litter Raking On Plant Community Composition And Soil Seed Banks In Longleaf Pine Savannas, Jordan Andrew Winter
Graduate Theses
Longleaf pine (Pinus palustris) savannas have been reduced to a small percentage of their original range in the southeastern United States. These savannas are fire-reliant and require frequent, low-intensity fires to maintain understory plant diversity. Currently, many landowners rake pine litter off the forest floor of longleaf pine savannas for subsequent sale in horticulture. Though raking is a common practice, little is known about the effects of raking on the understory plant community, the soil seed bank, or fire intensity. I conducted my research in two longleaf pine savanna sites where raking has occurred. At the McCain Forest Management Area …
Soil Seed Bank Study On Abandoned Fields And Semi-Arid Grassland, South Africa, P. J. Malan, T. Myburg, Hennie A. Snyman
Soil Seed Bank Study On Abandoned Fields And Semi-Arid Grassland, South Africa, P. J. Malan, T. Myburg, Hennie A. Snyman
IGC Proceedings (1993-2023)
Up to the 1980’s marginal soils in the central grasslands of South Africa were successfully ploughed for crop production, but unfortunately those soils soon proved to be uneconomical. Due to high input costs, low maize prices, and unreliable rainfall, the Department of Agriculture soon implemented the “soil conversion scheme” to promote the conversion of those ploughed marginal soils to permanent pastures. Regardless of the implementation the soil conversion scheme, many farmers unfortunately just abandoned some of these marginal fields, not establishing permanent pastures. This led to many hectares of unproductive previously cultivated fields, referred to as abandoned fields. It was …
Effect Of Fertilization Level And Cutting Pattern On Species Diversity Of Meadow Stand, Pavel Knot, Josef Raus, Michal Kvasnovský, Jiri Skladanka, Frantisek Hrabe
Effect Of Fertilization Level And Cutting Pattern On Species Diversity Of Meadow Stand, Pavel Knot, Josef Raus, Michal Kvasnovský, Jiri Skladanka, Frantisek Hrabe
IGC Proceedings (1993-2023)
The distribution of grasslands and their floristic composition is related to the climate at the largest scale. Particular grassland is affected by bedrock, soil, water regime, altitude, nutrient status, local climate, disturbance etc (Gibson, 2009). Grasslands provide not only production functions but also large scale of ecosystem services such as nutrient cycling, sequestration of carbon dioxide, prevention of soil loss and many others. Ability of grasslands to afford both production and ecosystem functions depends among others on the floristic composition (Chytry, 2007). Semi-natural permanent meadows, as a result of the concurrence of many factors, represent a great reservoir of biodiversity. …
An Intergrative Ecological And Taxonomic Assessment Of The Stoneflies (Insecta, Plecoptera) Of The Black Mountains, North Carolina, Usa, Madeline Lake Metzger
An Intergrative Ecological And Taxonomic Assessment Of The Stoneflies (Insecta, Plecoptera) Of The Black Mountains, North Carolina, Usa, Madeline Lake Metzger
Masters Theses & Specialist Projects
The Black Mountains are a part of the Blue Ridge region of the Appalachian Mountains and include Mount Mitchell, the highest peak east of the Mississippi River at 2,037 m (= 6,684 ft). A comprehensive inventory of the stonefly fauna was conducted between 2014-2019 within Mt. Mitchell State Park and adjacent Pisgah National Forest. Collections occurred seasonally from 44 unique locations, covering a broad range of stream sizes and elevations in the region. Sequencing of the mitochondrial cytochrome c oxidase subunit I (mtCOI) gene was completed to assist with making positive determinations to species for females of taxonomically challenging genera …
An Investigation Into The Effects Of Rural Roads On Plant Diversity Of Roadsides In Arid Rangelands Of Iran, Anahita Rashtian, Mansour Mesdaghi
An Investigation Into The Effects Of Rural Roads On Plant Diversity Of Roadsides In Arid Rangelands Of Iran, Anahita Rashtian, Mansour Mesdaghi
IGC Proceedings (1993-2023)
Roads are essential elements of human societies. Rural roads are clear indicators of rural development. Most rural roads in Iran are dirt roads and roadside vegetation is an important part of the ecosystem. Making roads can change the microclimate, including the light regime, pH and organic matter of soil, hydrological and sedimentation regimes (Karim and Mallik 2008; Hayasakaa et al. 2012). This can affect the composition of vegetation, with increased density and frequency of some fast-growing species close to the road for example (Parendes and Jones 2000). Road-building can also contaminate the air, soil, and water, with destruction of …
Gymnosperm Species Richness Patterns Along The Elevational Gradient And Its Comparison With Other Plant Taxonomic Groups In The Himalayas, Suresh C. Subedi, Khem Raj Bhattarai, Timothy M. Perez, Jay P. Sah
Gymnosperm Species Richness Patterns Along The Elevational Gradient And Its Comparison With Other Plant Taxonomic Groups In The Himalayas, Suresh C. Subedi, Khem Raj Bhattarai, Timothy M. Perez, Jay P. Sah
Faculty Publications - Biological Sciences
Phylogenetic constraints on ecophysiological adaptations and specific resource requirements are likely to explain why some taxonomic and functional groups exhibit different richness patterns along climatic gradients. We used interpolated species elevational distribution data and climatic data to describe gymnosperm species richness variation along elevational and climatic gradients in the Himalayas. We compared the climatic and elevational distributions of gymnosperms to those previously found for bryophytes, ferns, and angiosperm tree lineages to understand the respective drivers of species richness. Our study location was divided into three regions: Eastern; Central; and Western Himalayas. In each region, the sum of gymnosperm species richness …
Fish Larvae Assemblages Of Gökçeada Island, North Aegean Sea: Effect Of Weekly Samplinginterval On Their Incidences, İsmai̇l Burak Daban, Ali̇ İşmen
Fish Larvae Assemblages Of Gökçeada Island, North Aegean Sea: Effect Of Weekly Samplinginterval On Their Incidences, İsmai̇l Burak Daban, Ali̇ İşmen
Turkish Journal of Zoology
The species composition and temporal variations of fish larvae in shallow waters (
Internet Of Things For Sustainable Forestry, Abdul Salam
Internet Of Things For Sustainable Forestry, Abdul Salam
Faculty Publications
Forests and grasslands play an important role in water and air purification, prevention of the soil erosion, and in provision of habitat to wildlife. Internet of Things has a tremendous potential to play a vital role in the forest ecosystem management and stability. The conservation of species and habitats, timber production, prevention of forest soil degradation, forest fire prediction, mitigation, and control can be attained through forest management using Internet of Things. The use and adoption of IoT in forest ecosystem management is challenging due to many factors. Vast geographical areas and limited resources in terms of budget and equipment …
Terrestrial Snail Communities Of The Lower Rio Grande Valley Are Affected By Human Disturbance And Correlate With Vegetation Community Composition, Briante S. Lewis Najev, Alison Schofield, Raziel I. Flores, Benjamin T. Hutchins, J. Andrew Mcdonald, Kathryn E. Perez
Terrestrial Snail Communities Of The Lower Rio Grande Valley Are Affected By Human Disturbance And Correlate With Vegetation Community Composition, Briante S. Lewis Najev, Alison Schofield, Raziel I. Flores, Benjamin T. Hutchins, J. Andrew Mcdonald, Kathryn E. Perez
Biology Faculty Publications and Presentations
The lower Rio Grande Valley of Texas (LRGV) contains a unique, subtropical, semiarid floodplain with most of the few remaining Tamaulipan thorn forests in the United States. Less than 2% of Tamaulipan thorn forest remains, with urban and agricultural conversion potentially threatening diverse plant and animal communities native to the habitat. We performed vegetative community surveys and conducted a comprehensive survey of terrestrial snail communities in intact (refugia sites, minimally altered in recent times) and altered (previously cleared and regrown or restored) Tamaulipan thorn forest habitats of the LRGV. In a comparison of intact and altered sites that have comparable …
Mammal Species Inventory Using Various Trapping Methods In Zone 4 Of Billy Barquedier National Park, Belize During Rainy Season, Mersady Redding
Mammal Species Inventory Using Various Trapping Methods In Zone 4 Of Billy Barquedier National Park, Belize During Rainy Season, Mersady Redding
Animal Science Undergraduate Honors Theses
Belize is a small country, but it is extremely ecologically diverse. Based on the few studies conducted in Belize, the abundance of mammals is low but diversity is high. Particular findings note the number and identity of species differed between four sites in the Maya Mountains of Belize, indicating that a data set from a single site is not representative of the Neotropical region. Insufficient data is available to estimate current species richness of many areas in Belize, including Billy Barquedier National Park (BBNP). The objective of this study was to explore trapping and documentation methods of terrestrial mammals in …
Regional And Historical Influences On The Spatial Distribution Of Neotropical Trees, Maria Isabel Loza
Regional And Historical Influences On The Spatial Distribution Of Neotropical Trees, Maria Isabel Loza
Dissertations
At small spatial scales, the composition of species assemblages depends on local conditions and the dispersal of propagules from surrounding regions. In turn, processes taking place at broad temporal and spatial scales, including changes in regional physiography and climate, shape the species pools in these source regions. This dissertation seeks to understand the effects of regional and historical processes on the spatial distribution of Neotropical tree species. In chapter 1, I investigate regional enrichment of local species assemblages testing two hypothesis: i) local species assemblages are enriched by unfiltered species pools, which are composed of all species that can …
Results Of A Fall And Spring Bioblitz At Grassy Pond Recreational Area, Lowndes County, Georgia., Emily Cantonwine, James Nienow, Mark Blackmore, Brandi Griffin, Brad Bergstrom, David Bechler, Timothy Henkel, Christopher A. Slaton, James Adams, Arthur Grupe, Malcolm Hodges, Gregory Lee
Results Of A Fall And Spring Bioblitz At Grassy Pond Recreational Area, Lowndes County, Georgia., Emily Cantonwine, James Nienow, Mark Blackmore, Brandi Griffin, Brad Bergstrom, David Bechler, Timothy Henkel, Christopher A. Slaton, James Adams, Arthur Grupe, Malcolm Hodges, Gregory Lee
Georgia Journal of Science
Two 24 h BioBlitzes were conducted in September, 2018, and April, 2019, at Grassy Pond Recreational Area in Lowndes County, Georgia. Teams of scientists, students, and public participants surveyed plants, insects, amphibians and reptiles, birds, mammals, fungi, lichens, and aquatic microorganisms. Both events included educational programs with informational walks and activities targeted to youth. In the fall, 654 species and 55 additional genera were recorded. In the spring, there were 581 species and 54 additional genera recorded. Two fungi and 38 lichens were first reports for Lowndes County; one fungus was a first for Georgia. One lichen may be a …
Berberidaceae From Moist Temperate Forests, Northern Areas, Pakistan, Nafeesa Hanif Qudsia, Kishwar Sultana, Safdar Ali Shah
Berberidaceae From Moist Temperate Forests, Northern Areas, Pakistan, Nafeesa Hanif Qudsia, Kishwar Sultana, Safdar Ali Shah
Journal of Bioresource Management
A quick visit of the protected forests of Banjosa, Dhirkot, Pir Chanasi, Pir Lassura and Tolipir was carried out. Berberidaceae belong to a family also known as the Barberry family (Elpel, n.d.). In Pakistan, there are 3 genera and 22 species belonging to this group (Jafri, n.d.). Species of this family are extensively cultivated due to their aesthetic and medicinal value. In the past, researchers would consider this family to get an idea about the habitat degradation of temperate areas. This study was aimed to produce a comprehensive list of species richness of this family in five National Parks of …
Predictors Of Bat Species Richness Within The Islands Of The Caribbean Basin, Justin D. Hoffman, Gabrielle Kadlubar, Scott C. Pedersen, Roxanne J. Larsen, Peter A. Larsen, Carleton J. Phillips, Gary G. Kwiecinski, Hugh H. Genoways
Predictors Of Bat Species Richness Within The Islands Of The Caribbean Basin, Justin D. Hoffman, Gabrielle Kadlubar, Scott C. Pedersen, Roxanne J. Larsen, Peter A. Larsen, Carleton J. Phillips, Gary G. Kwiecinski, Hugh H. Genoways
University of Nebraska State Museum: Mammalogy Papers
Several mechanisms have been shown to influence species richness among island ecosystems, yet most studies limit their focus to a few predictor variables. The objective of this study is to investigate variation in Chiropteran richness across islands in the Caribbean Basin with an extensive set of predictor variables. Using recent faunal surveys, the most contemporary list of bat species per island was complied. Data were collected on 17 predictor variables, which summarized five general island characteristics including island area, isolation, habitat diversity, human impact, and climate. An information-theoretic approach was used by fitting alternative candidate models to determine which variable(s) …
Hypoxia In Mangroves: Occurrence And Impact On Valuable Tropical Fish Habitat, Alexia Dubuc, Ronald Baker, Cyril Marchand, Nathan Waltham, Marcus Sheaves
Hypoxia In Mangroves: Occurrence And Impact On Valuable Tropical Fish Habitat, Alexia Dubuc, Ronald Baker, Cyril Marchand, Nathan Waltham, Marcus Sheaves
School of Marine and Environmental Sciences Faculty and Staff Publications and Presentations
Intertidal mangrove forests are harsh environments that can naturally experience hypoxia in association with low tide. However, we know relatively little about dissolved oxygen (DO) fluctuations and DO-induced responses by fish, although DO is a fundamental water quality parameter. This study examines DO as a potential factor regulating the utilization of intertidal mangrove forests by fish and consequently their widely recognized feeding, refuge and nursery values. We deployed underwater video cameras, coupled with DO and depth loggers, in a mangrove forest to record changes in fish assemblages in response to tidal variations in DO and other associated environmental parameters. Our …
Global Change Effects On Plant Communities Are Magnified By Time And The Number Of Global Change Factors Imposed, Kimberly J. Komatsu, Meghan L. Avolio, Nathan P. Lemoine, Forest Isbell, Emily Grman, Gregory R. Houseman, Sally E. Koerner, David S. Johnson, Kevin R. Wilcox, Juha M. Alatalo, John P. Anderson, Rien Aerts, Sara G. Baer, Andrew H. Baldwin, Jonathan Bates, Carl Beierkuhnlein, R. Travis Belote, John Blair, Juliette M.G. Bloor, Patrick J. Bohlen, Edward W. Bork, Elizabeth H. Boughton, William D. Bowman, Andrea J. Britton, James F. Cahill Jr., Enrique Chaneton, Nona R. Chiariello, Jimin Cheng, Scott L. Collins, J. Hans C. Cornelissen, Guozhen Du, Anu Eskelinen, Jennifer Firn, Bryan Foster, Laura Gough, Katherine Gross, Lauren M. Hallett, Xingguo Han, Harry Harmens, Mark J. Hovenden, Annika Jagerbrand, Anke Jentsch, Christel Kern, Kari Klanderud, Alan K. Knapp, Juergen Kreyling, Wei Li, Yiqi Luo, Rebecca L. Mcculley, Jennie R. Mclaren, J. Patrick Megonigal, John W. Morgan, Vladimir Onipchenko, Steven C. Pennings, Janet S. Prevéy, Jodi N. Price, Peter B. Reich, Clare H. Robinson, F. Leland Russell, Osvaldo E. Sala, Eric W. Seabloom, Melinda D. Smith, Nadejda A. Soudzilovskaia, Lara Souza, Katherine Suding, K. Blake Suttle, Tony Svejcar, David Tilman, Pedro Tognetti, Roy Turkington, Shannon White, Zhuwen Xu, Laura Yahdjian, Qiang Yu, Pengfei Zhang, Yunhai Zhang
Global Change Effects On Plant Communities Are Magnified By Time And The Number Of Global Change Factors Imposed, Kimberly J. Komatsu, Meghan L. Avolio, Nathan P. Lemoine, Forest Isbell, Emily Grman, Gregory R. Houseman, Sally E. Koerner, David S. Johnson, Kevin R. Wilcox, Juha M. Alatalo, John P. Anderson, Rien Aerts, Sara G. Baer, Andrew H. Baldwin, Jonathan Bates, Carl Beierkuhnlein, R. Travis Belote, John Blair, Juliette M.G. Bloor, Patrick J. Bohlen, Edward W. Bork, Elizabeth H. Boughton, William D. Bowman, Andrea J. Britton, James F. Cahill Jr., Enrique Chaneton, Nona R. Chiariello, Jimin Cheng, Scott L. Collins, J. Hans C. Cornelissen, Guozhen Du, Anu Eskelinen, Jennifer Firn, Bryan Foster, Laura Gough, Katherine Gross, Lauren M. Hallett, Xingguo Han, Harry Harmens, Mark J. Hovenden, Annika Jagerbrand, Anke Jentsch, Christel Kern, Kari Klanderud, Alan K. Knapp, Juergen Kreyling, Wei Li, Yiqi Luo, Rebecca L. Mcculley, Jennie R. Mclaren, J. Patrick Megonigal, John W. Morgan, Vladimir Onipchenko, Steven C. Pennings, Janet S. Prevéy, Jodi N. Price, Peter B. Reich, Clare H. Robinson, F. Leland Russell, Osvaldo E. Sala, Eric W. Seabloom, Melinda D. Smith, Nadejda A. Soudzilovskaia, Lara Souza, Katherine Suding, K. Blake Suttle, Tony Svejcar, David Tilman, Pedro Tognetti, Roy Turkington, Shannon White, Zhuwen Xu, Laura Yahdjian, Qiang Yu, Pengfei Zhang, Yunhai Zhang
Biological Sciences Faculty Research and Publications
Global change drivers (GCDs) are expected to alter community structure and consequently, the services that ecosystems provide. Yet, few experimental investigations have examined effects of GCDs on plant community structure across multiple ecosystem types, and those that do exist present conflicting patterns. In an unprecedented global synthesis of over 100 experiments that manipulated factors linked to GCDs, we show that herbaceous plant community responses depend on experimental manipulation length and number of factors manipulated. We found that plant communities are fairly resistant to experimentally manipulated GCDs in the short term (y). In contrast, long-term (≥10 y) experiments show increasing community …
Decadal Effects Of Thinning On Understory Light Environments And Plant Community Structure In A Subtropical Forest, Ho-Chen Tsai, Jyh-Min Chiang, Ryan Mcewan, Teng-Chiu Lin
Decadal Effects Of Thinning On Understory Light Environments And Plant Community Structure In A Subtropical Forest, Ho-Chen Tsai, Jyh-Min Chiang, Ryan Mcewan, Teng-Chiu Lin
Ryan McEwan
Canopy-opening disturbance such as thinning has immediate and substantive effects on understory microclimate and therefore the establishment and growth of understory plants. A large number of studies have reported the effects of thinning on tree growth, but few studies have examined long-term effects of thinning on understory light environments and species and functional diversity of understory plants. Even less is known whether the change in understory plant community structure observed following canopy disturbance is short-lived and would diminish as the canopy closes or a long lasting due to legacy effects. We examined the effects of an experimental removal of 25% …
How Do Ecological Resilience Metrics Relate To Community Stability And Collapse?, Caleb P. Roberts, Dirac L. Twidwell Jr, David G. Angeler, Craig R. Allen
How Do Ecological Resilience Metrics Relate To Community Stability And Collapse?, Caleb P. Roberts, Dirac L. Twidwell Jr, David G. Angeler, Craig R. Allen
Department of Agronomy and Horticulture: Faculty Publications
The concept of ecological resilience (the amount of disturbance a system can absorb before collapsing and reorganizing) holds potential for predicting community change and collapse—increasingly common issues in the Anthropocene. Yet neither the predictions nor metrics of resilience have received rigorous testing. The crossscale resilience model, a leading operationalization of resilience, proposes resilience can be quantified by the combination of diversity and redundancy of functions performed by species operating at different scales. Here, we use 48 years of sub-continental avian community data aggregated at multiple spatial scales to calculate resilience metrics derived from the cross-scale resilience model (i.e., cross-scale diversity, …
A Novel Approach To Understanding Bird Communities Using Informed Diversity Estimates At Local And Regional Scales In Northern California And Southern Oregon, Jared D. Wolfe, John D. Alexander, Jamie L. Stephens, C. John Ralph
A Novel Approach To Understanding Bird Communities Using Informed Diversity Estimates At Local And Regional Scales In Northern California And Southern Oregon, Jared D. Wolfe, John D. Alexander, Jamie L. Stephens, C. John Ralph
College of Forest Resources and Environmental Science Publications
Assessment and preservation of biodiversity has been a central theme of conservation biology since the discipline's inception. However, when diversity estimates are based purely on measures of presence–absence, or even abundance, they do not directly assess in what way focal habitats support the life history needs of individual species making up biological communities. Here, we move beyond naïve measures of occurrence and introduce the concept of “informed diversity” indices which scale estimates of avian species richness and community assemblage by two critical phases of their life cycle: breeding and molt. We tested the validity of the “informed diversity” concept using …