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Articles 811 - 840 of 11528
Full-Text Articles in Life Sciences
The Effect Of Arbuscular Mycorrhizal Fungi On The Growth Of Cyclocarya Paliurus Cutting Seedlings, Wanxia Yang, Jiaqi Zhuang, Yuan Tian, Shiying Wan, Siyu Ding, Mei Zhang
The Effect Of Arbuscular Mycorrhizal Fungi On The Growth Of Cyclocarya Paliurus Cutting Seedlings, Wanxia Yang, Jiaqi Zhuang, Yuan Tian, Shiying Wan, Siyu Ding, Mei Zhang
Turkish Journal of Agriculture and Forestry
To increase the yield of secondary metabolites, Arbuscular mycorrhiza fungi were used to improve cyclocarya paliurus. The experiment measured growth indicators, biomass, mineral nutrients, etc. The results showed that after inoculation with mycorrhizal fungi the nitrogen content in the leaves of the experimental group was 27.87 mg/g, K content was 7.48 mg/g, Ca content was 26.63 mg/g, and Mg content was 2.82 mg/g. Compared with the control group (Cg), mycorrhizal fungi can promote the absorption of mineral nutrients by C. paliurus seedlings. A. mycorrhizal fungi had a certain influence on the proportion of root, stem, leaf, and total biomass of …
The Effect Of Organic And Chemical Fertilizers On The Activity Of Soil Enzymes In Soils Of Different Compositions, Elif Yağanoğlu, Adi̇l Aydin
The Effect Of Organic And Chemical Fertilizers On The Activity Of Soil Enzymes In Soils Of Different Compositions, Elif Yağanoğlu, Adi̇l Aydin
Turkish Journal of Agriculture and Forestry
In this study, the effects of chemical (20:20:0 compound) and organic (barnyard) fertilizers applied to different textured soils on several soil enzyme (urease, acid phosphatase, alkaline phosphatase, and dehydrogenase) activities were investigated. The research was conducted under greenhouse conditions with (beans and corn) and without crops. Considering the results of the preexperiment analysis of the soils, a 40-g pot–1 of farmyard manure was placed into the pots in which organic fertilizer would be applied in clay and silty loam soils, and a 50-g pot–1 of farmyard manure was added to sandy loam soil; in addition, a 0.25-g pot–1 of 20:20:0 …
Greater Sage-Grouse Brood Locations On Parker Mountain Utah 1998-2009, David Dahlgren
Greater Sage-Grouse Brood Locations On Parker Mountain Utah 1998-2009, David Dahlgren
Browse all Datasets
Species of conservation concern are often habitat specialists, posing significant risk to those species when specific plant communities are threatened. Despite this, practitioners habitually focus conservation efforts on these singular communities, while ignoring ecological mechanisms that explain the wildlife-plant relationships. In doing so, practitioners may overlook alternative vegetation communities that could maintain wildlife populations under alternative conditions (e.g., climate change). Here, we term these areas surrogate habitat, defined as "vegetation communities or resource sites that provide similar critical resources to conventional sites," and assess their potential for conservation using a case-study of Greater sage-grouse (Centrocercus urophasianus) on Parker Mountain, Utah …
Deciphering The Intricate Hierarchical Gene Regulatory Network: Unraveling Multi-Level Regulation And Modifications Driving Secondary Cell Wall Formation, Zhigang Wei, Hairong Wei
Deciphering The Intricate Hierarchical Gene Regulatory Network: Unraveling Multi-Level Regulation And Modifications Driving Secondary Cell Wall Formation, Zhigang Wei, Hairong Wei
Michigan Tech Publications
Wood quality is predominantly determined by the amount and the composition of secondary cell walls (SCWs). Consequently, unraveling the molecular regulatory mechanisms governing SCW formation is of paramount importance for genetic engineering aimed at enhancing wood properties. Although SCW formation is known to be governed by a hierarchical gene regulatory network (HGRN), our understanding of how a HGRN operates and regulates the formation of heterogeneous SCWs for plant development and adaption to ever-changing environment remains limited. In this review, we examined the HGRNs governing SCW formation and highlighted the significant key differences between herbaceous Arabidopsis and woody plant poplar. We …
Animal Conservation In St. Louis, Kate O'Sullivan
Animal Conservation In St. Louis, Kate O'Sullivan
Undergraduate Research Symposium
St. Louis has a multitude of organizations involved in the natural sciences. But how many of them actually contribute towards animal conservation? The St. Louis Zoo is an organization that focuses a lot of its effort on presentation, so how does that impact the funds that go towards actually saving the animals? I plan to dive into the different animal-based organizations in St. Louis and its surrounding areas, as well as discuss the positives and negatives of each organization. Furthermore, I will provide examples from several sources that I have been reviewing all year to support my claims. I plan …
Smokejumper Obituary: Kennedy, John Brent (Mccall 1987), National Smokejumper Association
Smokejumper Obituary: Kennedy, John Brent (Mccall 1987), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Kennedy, John Brent (Mccall 1987), National Smokejumper Association
Smokejumper Obituary: Kennedy, John Brent (Mccall 1987), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Tree Localization In A Plantation Using Ultra Wideband Signals, Akshat Verma
Tree Localization In A Plantation Using Ultra Wideband Signals, Akshat Verma
The Journal of Purdue Undergraduate Research
No abstract provided.
Smokejumper Obituary: Clements, Frank Robert (North Cascades 1988), National Smokejumper Association
Smokejumper Obituary: Clements, Frank Robert (North Cascades 1988), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Clements, Frank Robert (North Cascades 1988), National Smokejumper Association
Smokejumper Obituary: Clements, Frank Robert (North Cascades 1988), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Aspen Recovery In Northern Yellowstone: A Comment On Brice Et Al. (2021), Luke E. Painter, Robert L. Beschta, William J. Ripple
Aspen Recovery In Northern Yellowstone: A Comment On Brice Et Al. (2021), Luke E. Painter, Robert L. Beschta, William J. Ripple
Aspen Bibliography
Aspen sapling recruitment increased as browsing by elk decreased, following the 1995–96 reintroduction of wolves in Yellowstone National Park. We address claims by Brice et al. (2021) that previous studies exaggerated recent aspen recovery. We conclude that their results actually supported previous work showing a trophic cascade benefiting aspen.
Smokejumper Obituary: Hall, David E. (Mccall 1980), National Smokejumper Association
Smokejumper Obituary: Hall, David E. (Mccall 1980), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Hall, David E. (Mccall 1980), National Smokejumper Association
Smokejumper Obituary: Hall, David E. (Mccall 1980), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Aspen And Spruce Densities Affect Tree Size, Future Stand Volume, And Aboveground Carbon Following Precommercial Thinning, Philip G. Comeau, Mike Bokalo
Aspen And Spruce Densities Affect Tree Size, Future Stand Volume, And Aboveground Carbon Following Precommercial Thinning, Philip G. Comeau, Mike Bokalo
Aspen Bibliography
Data collected over a 30-year period from an experiment replicated across 21 locations in western Canada are used to explore the effects of precommercial thinning of trembling aspen to a range of densities in combination with three initial white spruce densities on tree growth and stand dynamics. Increasing differentiation amongst the 15 treatments was observed with age after thinning for both spruce and aspen responses. Spruce height and diameter declined with increasing aspen density. At age 10 spruce diameter with no aspen was 1.5× that of spruce in unthinned while it was 2.6× that of spruce in unthinned at age …
Tracing The Maternal Line In Glacial-Interglacial Migrations Of Populus Tremuloides: Finding Trees For Future Sustainable Forests By Searching In The Past, Luke R. Tembrock, Frida A. Zink, Guozhe Zhang, Andrea Schuhmann, Cuihua Gu, Zhiqiang Wu
Tracing The Maternal Line In Glacial-Interglacial Migrations Of Populus Tremuloides: Finding Trees For Future Sustainable Forests By Searching In The Past, Luke R. Tembrock, Frida A. Zink, Guozhe Zhang, Andrea Schuhmann, Cuihua Gu, Zhiqiang Wu
Aspen Bibliography
Maintaining and planting sustainable forests is fundamental in perpetuating the essential functions of these ecosystems. A central aspect of managing forests for future resilience is the consideration of past migration and evolution of trees using genetic and genomic data to ensure that functionally appropriate diversity is conserved and utilized. In our study, we generated and compared genetic and genomic data from the plastome to better understand phylogeography and molecular evolution in the tree species Populus tremuloides (aspen). With these analyses, we found evidence of divergence and migration between northern and southern sites. Additionally, evidence of deep incomplete plastome sorting across …
Perianth Evolution And Implications For Generic Delimitation In The Eucalypts (Myrtaceae), Including The Description Of The New Genus, Blakella, Michael D. Crisp, Bui Q. Minh, Bokyung Choi, Robert D. Edwards, James Hereward, Carsten Kulheim, Yen Po Lin, Karen Meusemann, Andrew H. Thornhill, Alicia Toon, Lyn G. Cook
Perianth Evolution And Implications For Generic Delimitation In The Eucalypts (Myrtaceae), Including The Description Of The New Genus, Blakella, Michael D. Crisp, Bui Q. Minh, Bokyung Choi, Robert D. Edwards, James Hereward, Carsten Kulheim, Yen Po Lin, Karen Meusemann, Andrew H. Thornhill, Alicia Toon, Lyn G. Cook
Michigan Tech Publications
Eucalypts (Myrtaceae tribe Eucalypteae) are currently placed in seven genera. Traditionally, Eucalyptus was defined by its operculum, but when phylogenies placed Angophora, with free sepals and petals, as sister to the operculate bloodwood eucalypts, the latter were segregated into a new genus, Corymbia. Yet, generic delimitation in the tribe Eucalypteae remains uncertain. Here, we address these problems using phylogenetic analysis with the largest molecular data set to date. We captured 101 low-copy nuclear exons from 392 samples representing 266 species. Our phylogenetic analysis used maximum likelihood (IQtree) and multispecies coalescent (Astral). At two nodes critical to generic delimitation, we tested …
Non-Invasive Methods For Monitoring Weasels: Emerging Technologies And Priorities For Future Research, David S. Jachowski, Scott M. Bergeson, Stacy Cotey, Elizabeth Croose, Tim R. Hofmeester, Jenny Macpherson, Et Al.
Non-Invasive Methods For Monitoring Weasels: Emerging Technologies And Priorities For Future Research, David S. Jachowski, Scott M. Bergeson, Stacy Cotey, Elizabeth Croose, Tim R. Hofmeester, Jenny Macpherson, Et Al.
Michigan Tech Publications
Weasels (genus Mustela and Neogale) are of management concern as declining native species in some regions and invasive species in others. Regardless of the need to conserve or remove weasels, there is increasingly a need to use non-invasive monitoring methods to assess population trends. We conducted a literature review and held the first ever International Weasel Monitoring Symposium to synthesise information on historical and current non-invasive monitoring techniques for weasels. We also explored current limitations, opportunities, and areas of development to guide future research and long-term monitoring. Our literature search revealed that in the past 20 years, camera traps were …
Smokejumper Obituary: Roos, Alford "Omar" (Redding 1983), National Smokejumper Association
Smokejumper Obituary: Roos, Alford "Omar" (Redding 1983), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Roos, Alford "Omar" (Redding 1983), National Smokejumper Association
Smokejumper Obituary: Roos, Alford "Omar" (Redding 1983), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Dynamics Of Soil Microbial Communities Involved In Carbon Cycling Along Three Successional Forests In Southern China, Minghui Hu, Shuyidan Zhou, Xin Xiong, Xuan Wang, Yu Sun, Ze Meng, Dafeng Hui, Jianling Li, Deqiang Zhang, Qi Deng
Dynamics Of Soil Microbial Communities Involved In Carbon Cycling Along Three Successional Forests In Southern China, Minghui Hu, Shuyidan Zhou, Xin Xiong, Xuan Wang, Yu Sun, Ze Meng, Dafeng Hui, Jianling Li, Deqiang Zhang, Qi Deng
Biology Faculty Research
Dynamics of plant communities during forest succession have been received great attention in the past decades, yet information about soil microbial communities that are involved in carbon cycling remains limited. Here we investigated soil microbial community composition and carbohydrate degradation potential using metagenomic analysis and examined their influencing factors in three successional subtropical forests in southern China. Results showed that the abundances of soil bacteria and fungi increased (p ≤ 0.05 for both) with forest succession in relation to both soil and litter characteristics, whereas the bacterial diversity did not change (p > 0.05) and the fungal diversity of Shannon-Wiener index …
Engagement For Life's Sake: Reflections On Partnering And Partnership With Rural Tribal Nations, Chelsea Schelly, Valoree Gagnon, Kathleen Brosemer, Kristin Arola
Engagement For Life's Sake: Reflections On Partnering And Partnership With Rural Tribal Nations, Chelsea Schelly, Valoree Gagnon, Kathleen Brosemer, Kristin Arola
Michigan Tech Publications
In this paper, we reflect on our collective experiences engaging with Anishinaabe Tribal Nations in the Great Lakes region to support Tribal sovereignty in decision-making for food, energy, and water (FEW) systems. In these diverse experiences, we find common lessons. The first set of lessons contributes new empirical knowledge regarding the challenges and opportunities that rural Great Lakes Tribal Nations navigate for enacting sovereignty in decision-making. Our experiences illustrate that while Tribal Nations benefit from a broad and deep commitment to sovereignty and many cultural strengths, they are often challenged by shortages in administrative capacity; technical support; and embeddedness in …
Smokejumper Obituary: Jessup, Gerald M. (North Cascades 1959), National Smokejumper Association
Smokejumper Obituary: Jessup, Gerald M. (North Cascades 1959), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Jessup, Gerald M. (North Cascades 1959), National Smokejumper Association
Smokejumper Obituary: Jessup, Gerald M. (North Cascades 1959), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Komberec, Charles Richard "Dick" (Pilot 0000), National Smokejumper Association
Smokejumper Obituary: Komberec, Charles Richard "Dick" (Pilot 0000), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: Komberec, Charles Richard "Dick" (Pilot 0000), National Smokejumper Association
Smokejumper Obituary: Komberec, Charles Richard "Dick" (Pilot 0000), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: May, Paul James (Missoula 1970), National Smokejumper Association
Smokejumper Obituary: May, Paul James (Missoula 1970), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
Smokejumper Obituary: May, Paul James (Missoula 1970), National Smokejumper Association
Smokejumper Obituary: May, Paul James (Missoula 1970), National Smokejumper Association
Smokejumper Obituaries
No abstract provided.
The Long-Term Effects Of Prescribed Fire On Floral Abundance And Bumble Bee Abundance In Mixed-Oak Forests Of Southeastern Ohio, Moses Shafer
Theses, Dissertations and Capstones
Pollinators are declining due to climate change and habitat loss driven by agriculture and urbanization. In fire-adapted ecosystems, fire promotes the biodiversity of plants by creating space, reducing competition, and increasing light and nutrient availability. However, little is known regarding the effects of fire on floral abundance of plants used by Bombus. The overall goal of this project was to assess the long-term effects of fire on floral abundance and Bombus abundance. Our specific questions were: (1) How does fire frequency influence floral abundance?, (2) How does fire frequency influence floral abundance of species specifically utilized by bumble bees?, …
Ms Environmental Biology Capstone Project, Reilly Miller
Ms Environmental Biology Capstone Project, Reilly Miller
Regis University Student Publications (comprehensive collection)
Habitat loss due to deforestation is a primary threat to global biodiversity. Clearing tropical rainforests for agriculture leads to forest fragmentation. Forest fragments contain fewer large trees and provide lower food availability for primates compared to continuous forests. Mantled howler monkeys inhabit the increasingly fragmented rainforests of Central and South America and may need to alter their activity and spatial cohesion to mitigate competition and preserve energy in fragments where there is lower quality food. We compared howler monkey activity and spatial cohesion across a small forest fragment (La Suerte Biological Research Station, LSBRS) and a large, continuous forest (La …
2024 Annual Report, Tennessee. Division Of Forestry And Tennessee. Department Of Agriculture
2024 Annual Report, Tennessee. Division Of Forestry And Tennessee. Department Of Agriculture
Forestry Annual Reports
This annual report presents an overview of Tennessee Forestry Commission programs and management.