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Developing A Model For The Integration Of Bajau Traditional Ecological Knowledge In The Management Of Locally Managed Marine Area: A Case Study Of Wakatobi Regency, Indonesia, Wengki Ariando Jan 2021

Developing A Model For The Integration Of Bajau Traditional Ecological Knowledge In The Management Of Locally Managed Marine Area: A Case Study Of Wakatobi Regency, Indonesia, Wengki Ariando

Chulalongkorn University Theses and Dissertations (Chula ETD)

Attaining sustainable resource management encompasses multilevel challenges and interdisciplinary approaches from grassroots efforts to international agreements. In the context of coastal and marine management, the complexities represented by the variety of local entities, regimes, and institutional supports are captured as current challenges in sustainability efforts. Such challenges, unfortunately, persist in the group of customary communities such as those of the Bajau, who live in coastal and marine areas. In an effort to address the aforementioned challenges, this research proposes a model for integrating the Traditional Ecological Knowledge (TEK) of the Bajau into Locally Managed Marine Areas (LMMA) scheme in Wakatobi, …

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Utilization Of Rain Tree (Samanea Saman) Residue As Modified Adsorbent To Treat Oil And Grease In Canteen Wastewater, Elga Riesta Puteri Jan 2021

Utilization Of Rain Tree (Samanea Saman) Residue As Modified Adsorbent To Treat Oil And Grease In Canteen Wastewater, Elga Riesta Puteri

Chulalongkorn University Theses and Dissertations (Chula ETD)

The utilization of waste materials as adsorbent precursors is gaining intention to treat fats, oils, and greases (FOG), especially in wastewater treatment. Tree residue, an abundant waste, provides a potential feedstock to be converted into valuable materials. This research aimed to develop modified adsorbent prepared from rain tree (Samanea saman) residue for FOG treatment. The synthesis process of modified adsorbent was conducted by chemical pretreatment using different chemical agents (i.e., NaOH, ZnCl2, and H3PO4­). The pre-treated twigs and leaves (1:4 ratio) were continued by pyrolysis process at different temperatures (i.e., 350, 550, and 750oC) using a heating rate of 10oC …

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Surface Activation Of Rice Husk-Derived Hydrochar As An Adsorbent For Atrazine And Ammonium, Kim Anh Phan Jan 2021

Surface Activation Of Rice Husk-Derived Hydrochar As An Adsorbent For Atrazine And Ammonium, Kim Anh Phan

Chulalongkorn University Theses and Dissertations (Chula ETD)

Due to the agricultural intensity, studies of sustainable solutions for atrazine and nitrogen contamination have attracted more attention. This study is aimed to develop rice husk hydrochar as an adsorbent for atrazine and ammonium adsorption. Effects of microwave-assisted hydrothermal carbonization (MHTC) conditions including temperature (150 – 200°C), residence time (20 – 60 min), and liquid to solid ratio (5:1 – 15:1 mL/g) on the atrazine and ammonium adsorption capacity were investigated. Surface activation of rice husk hydrochar samples was synthesized using potassium hydroxide (KOH) and hydrogen peroxide (H2O2) with various concentrations. The results showed that higher MHTC temperature with higher …

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Changes In Surface Water And Sediment Quality At A Complex Tidal-Influenced River: A Case Study Of Ganh Hao River, Mekong Delta, Vietnam, Muoi Le Van Jan 2021

Changes In Surface Water And Sediment Quality At A Complex Tidal-Influenced River: A Case Study Of Ganh Hao River, Mekong Delta, Vietnam, Muoi Le Van

Chulalongkorn University Theses and Dissertations (Chula ETD)

The research was carried out to determine the extent of surface water and sediment pollution using the physicochemical parameters and heavy metal concentrations. The surface water and sediment samples were obtained from 25 sites along the river on March 22 and September 5, 2019 at the main river influenced by the complex tidal regime and aquaculture practices in Ca Mau peninsular in the Vietnamese Mekong Delta. The water quality was compared with international and national standards, while the sediment quality was compared with Vietnamese standards and pollution indices (geo-accumulation index, contamination factor, and pollution load index). Principal component analysis (PCA) …

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Health Risk Assessment Of Toxic Metals In Commonly Consumed Salad Leafy Vegetables In Bangkok, Zin Htoo Hlyan Jan 2021

Health Risk Assessment Of Toxic Metals In Commonly Consumed Salad Leafy Vegetables In Bangkok, Zin Htoo Hlyan

Chulalongkorn University Theses and Dissertations (Chula ETD)

The objectives of this study were 1) to investigate concentrations of toxic metals including As, Cd, and Pb in the commonly consumed salad leafy vegetables which were sold in Bangkok, and 2) to assess potential human health risks of As, Cd, and Pb exposure via salad leafy vegetables consumption. A total of 120 samples were randomly collected from local fresh markets in Bangkok. The total concentrations of toxic metals were determined by an inductively coupled plasma mass spectroscopy (ICP-MS). Total concentrations of As, Cd and Pb in coral lettuce (CL), red coral (RC) and green oak (GO) for soil cultivation …

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ประสิทธิภาพของสารลดแรงตึงผิวในการลดฝุ่นละอองขนาดไม่เกิน 2.5 ไมครอน ในห้องทดสอบจำลองแบบกึ่งปิด, นพรุจ นาคจันทร์ Jan 2021

ประสิทธิภาพของสารลดแรงตึงผิวในการลดฝุ่นละอองขนาดไม่เกิน 2.5 ไมครอน ในห้องทดสอบจำลองแบบกึ่งปิด, นพรุจ นาคจันทร์

Chulalongkorn University Theses and Dissertations (Chula ETD)

การศึกษานี้มีวัตถุประสงค์เพื่อศึกษาประสิทธิภาพของการใช้อุปกรณ์ฉีดพ่นละอองน้ำเพื่อลด PM2.5 โดยการปรับเปลี่ยนลักษณะวิธีการฉีดพ่นละอองน้ำ ได้แก่ ขนาดหัวฉีดพ่น แรงดันฉีดพ่น และจำนวนหัวฉีด และทำการทดสอบประสิทธิภาพในการลด PM2.5 ด้วยสารลดแรงตึงผิว 4 ชนิด ได้แก่ Tween-80, Linear alkyl benzene sulfonate, Benzalkonium chloride และ Cocamidopropyl betaine โดยทำการทดสอบในห้องทดสอบจำลองพื้นที่แบบกึ่งปิด พร้อมทั้งวิเคราะห์ลักษณะการกระจายตัวตามขนาดของอนุภาคฝุ่นหลังจากผ่านกระบวนการฉีดพ่นน้ำและสารลดแรงตึงผิว ลักษณะทางสัณฐานวิทยาของการเกาะรวมกันของฝุ่นละอองที่เปลี่ยนแปลงไป และลักษณะการไหลของฝุ่นละอองในระบบทดสอบด้วยเทคนิคพลศาสตร์ของไหลเชิงคำนวณ ผลการศึกษาพบว่า การฉีดพ่นละอองน้ำด้วยหัวฉีดพ่นขนาด 0.6 มิลลิเมตร ที่ระดับแรงดันฉีดพ่น 0.4 เมกะปาสคาล ด้วยหัวฉีดพ่นจำนวน 1 หัว มีประสิทธิภาพในการลด PM2.5 สูงสุดเฉลี่ยอยู่ที่ร้อยละ 22 ± 1.4 ซึ่งปัจจัยที่เพิ่มประสิทธิภาพในการลด PM2.5 อย่างมีนัยสำคัญทางสถิติ ได้แก่ ระดับแรงดันฉีดพ่นและขนาดหัวฉีดพ่น (r = 0.775 และ 0.388 ตามลำดับ) ผลการทดสอบด้วยสารลดแรงตึงผิวพบว่า Tween-80 ที่ความเข้มข้น 1% w/v มีประสิทธิภาพในการลด PM2.5 สูงกว่าสารลดแรงตึงผิวชนิดอื่นอย่างมีนัยสำคัญทางสถิติที่ระดับความเชื่อมั่นร้อยละ 95 (p-value < 0.05) โดยมีประสิทธิภาพในการลด PM2.5 เฉลี่ยอยู่ที่ร้อยละ 23.6 ± 1.4 แต่ประสิทธิภาพดีกว่าน้ำเพียงเล็กน้อย การกระจายตัวตามขนาดของอนุภาคเมื่อฉีดพ่น Tween-80, Cocoamidopropyl betaine และ Benzalkonium chloride พบการกระจายของอนุภาคฝุ่นอยู่ในช่วงชั้นขนาดใหญ่กว่า 2.5 ไมครอน แสดงถึงสารทั้ง 3 ชนิดมีคุณสมบัติเป็นสารเกาะรวมที่ทำให้อนุภาค PM2.5 มีขนาดใหญ่ขึ้น และลักษณะสัณฐานวิทยาของอนุภาคฝุ่นละอองที่ฉีดพ่นด้วย Tween-80 มีลักษณะการเกาะรวมกันทางกายภาพของอนุภาคชัดเจนที่สุด แบบจำลองการไหลของฝุ่นละอองในสภาวะทดสอบแสดงให้เห็นถึงการเพิ่มระดับแรงดันฉีดพ่นและขนาดหัวฉีดพ่นช่วยเพิ่มประสิทธิภาพในการสกัดกั้นการเคลื่อนที่ของฝุ่นละอองที่ผ่านละอองน้ำได้ โดยส่งผลชัดเจนที่สุดเมื่อฉีดพ่นละอองน้ำด้วยหัวฉีดพ่นขนาด 0.6 มิลลิเมตร ระดับแรงดัน 0.4 เมกะปาสคาล

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การประยุกต์ใช้กากหม้อกรองเหลือทิ้งจากโรงงานน้ำตาลด้วยกระบวนการไฮโดรเทอร์มอลคาร์บอไนเซชันเพื่อบำบัดน้ำเสียของโรงงาน, รัชมล วิธูวัฒนา Jan 2021

การประยุกต์ใช้กากหม้อกรองเหลือทิ้งจากโรงงานน้ำตาลด้วยกระบวนการไฮโดรเทอร์มอลคาร์บอไนเซชันเพื่อบำบัดน้ำเสียของโรงงาน, รัชมล วิธูวัฒนา

Chulalongkorn University Theses and Dissertations (Chula ETD)

กากหม้อกรองเป็นวัสดุเหลือทิ้งจากโรงงานน้ำตาลซึ่งมีจำนวนมาก และมีปริมาณคาร์บอนที่สูง งานวิจัยนี้ได้ศึกษาความเป็นไปได้ในการนำกากหม้อกรอง มาผลิตเป็นวัสดุดูดซับด้วยกระบวนการไฮโดรเทอร์มอลคาร์บอไนเซชัน โดยศึกษาปัจจัยที่มีผล ได้แก่ อุณหภูมิ (200, 250, 300 °C) ระยะเวลาทำปฏิกิริยา (1, 2, 3 ชั่วโมง) และอัตราส่วนกากหม้อกรองต่อน้ำ (1:5, 1:10, 1:15) โดยผลผลิตที่ได้เรียกว่า ไฮโดรชาร์ และนำไฮโดรชาร์ที่ได้มาทดสอบการดูดซับสีในน้ำเสียจริงจากโรงงานน้ำตาลที่สภาวะค่าความเป็นกรด-ด่างจริง (pH = 4.18) และ ±2 จากค่าความเป็นกรด-ด่างจริง (pH = 6.18, 2.18) ผลการศึกษาพบว่า ไฮโดรชาร์ที่อุณหภูมิ 300 องศาเซลเซียส เวลาทำปฏิกิริยา 1 ชั่วโมง และอัตราส่วนชีวมวลต่อน้ำกลั่น 1:10 สามารถใช้เป็นตัวดูดซับที่ดี โดยไฮโดรชาร์ดังกล่าวมีค่าผลผลิตที่ได้ร้อยละ 57.73 โดยน้ำหนัก ค่าไอโอดีนนัมเบอร์เท่ากับ 273.37 มิลลิกรัมต่อกรัม และค่าไอโอดีนนัมเบอร์สุทธิเท่ากับ 153.09 มิลลิกรัมต่อกรัม ในส่วนของการศึกษาการดูดซับ พบว่า เวลาเข้าสู่สมดุลการดูดซับสีของไฮโดรชาร์เกิดขึ้นอย่างรวดเร็ว (น้อยกว่า 1 นาที) และประสิทธิภาพในการกำจัดสีในน้ำเสียจริงจากโรงงานน้ำตาลในสภาวะปกติได้ร้อยละ 70.84 นอกจากนี้ได้ทำการทดลองในคอลัมน์จำลอง พบว่าปริมาตรน้ำเสียที่ไฮโดรชาร์สามารถดูดซับสีได้ค่าสีต่ำกว่ามาตรฐานน้ำทิ้งเท่ากับ 40 มิลลิลิตร ที่อัตราการไหล 0.5 มิลลิลิตรต่อนาที โดยมีค่าสีเท่ากับ 274 ADMI

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Audit Of Waste Collected Over One Week From Superior Dental Health Of Lincoln, Bryclin Alstrom Jan 2021

Audit Of Waste Collected Over One Week From Superior Dental Health Of Lincoln, Bryclin Alstrom

Department of Environmental Studies: Undergraduate Student Theses

A waste audit of Superior Dental Health of Lincoln was conducted in order to propagate the implementation of sustainable waste management practices within the company. Differentiating between hazardous waste and solid waste is necessary for environmentally friendly waste management and ceasing the spread of infectious pathogens. The audit identified nine different materials contributing to the biomedical waste stream of the company. Of which, personal protective equipment (PPE) is of major concern due to the financial commitment necessary to acquire / dispose of these products, as well as the strain in supply due to the current COVID-19 pandemic. The results of …

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The Effect Of Urban Forests On Air Quality And Human Health, Chance Wilken Jan 2021

The Effect Of Urban Forests On Air Quality And Human Health, Chance Wilken

Department of Environmental Studies: Undergraduate Student Theses

Following the industrial revolution, the impacts of climate change have been increasingly impactful on both rural and urban populations around the world. As population density and urbanization increase throughout the globe, the influences of climate change will continue to play a dangerous role in its influence on people's lives. Due to negative health impacts on humans and the economic costs in cities, climate change is one of the most important issues to understand in the 21st century. Air quality and human health are two components of climate change that are impacted most significantly. The bulk of this work is to …

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Investigating Predation Risk Experienced By Wintering Birds At A Supplied-Food Garden, Madison Smart Jan 2021

Investigating Predation Risk Experienced By Wintering Birds At A Supplied-Food Garden, Madison Smart

Department of Environmental Studies: Undergraduate Student Theses

Wintering birds are particularly susceptible to predation while foraging at feeders. The ‘starvation vs. predation’ survival trade-off is felt most acutely in winter because energy demands are higher compared to milder seasons. This study investigated sense of predation risk experienced by members of a wintering mixed-species flock. The objective was to determine which species take on increased predation risk in order to forage at feeders, and if there was bias for one species over another. A raptor (experimental) and non-raptor (control) model were presented to a mixed-flock at feeders within Pioneers Park Nature Center. The first species to return to …

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Revisiting The Modified Baermann Extraction Method: Extraction Efficiency Of Radopholus Similis Using Different Extraction Materials, Kanan Saikai, Situma Wanjala, Celestine Oduori, Danny Coyne Jan 2021

Revisiting The Modified Baermann Extraction Method: Extraction Efficiency Of Radopholus Similis Using Different Extraction Materials, Kanan Saikai, Situma Wanjala, Celestine Oduori, Danny Coyne

All Peer-Reviewed Publications

In order to determine the threat that plant-parasitic nematodes pose to crop production, it is essential to establish an accurate estimation of their presence. The extraction efficiency from soil, therefore, is a critical step in establishing disease pressures presented by nematodes or the conditions of soil health. To achieve high nematode extraction efficiency, various methods and modifications have been developed over time (Oostenbrink, 1954; Seinhorst, 1956; Harrison & Green, 1976; Viaene et al., 2021) with variations being introduced locally, depending on the availability or access to certain materials. The simple extraction method was conceived and introduced by Baermann (1917), with …

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Effect Of Alternative Rearing Substrates And Temperature On Growth And Development Of The Cricket Modicogryllus Conspersus (Schaum), G. Ssepuuya, F. Sengendo, C. Ndagire, J. Karungi, K. K.M. Fiaboe, J. Efitre, D. Nakimbugwe Jan 2021

Effect Of Alternative Rearing Substrates And Temperature On Growth And Development Of The Cricket Modicogryllus Conspersus (Schaum), G. Ssepuuya, F. Sengendo, C. Ndagire, J. Karungi, K. K.M. Fiaboe, J. Efitre, D. Nakimbugwe

All Peer-Reviewed Publications

The increasing demand for animal protein in sub-Saharan Africa has led to insects being considered an alternative protein source for food and feed. In Uganda, chicken mash, containing fish meal as the protein source is commonly used to rear crickets. However, fishmeal is an expensive protein source that is also human food. This study therefore aimed at establishing an alternative preferred (consumed in the highest quantity) plant leaf diet for raising the Modicogryllus conspersus cricket, and the most suitable temperature for hatchability and egg development. The effect of (a) three diets (cassava leaves + cocoyam leaves + milk weed leaves; …

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Modeling Vegetation Effects On Barrier Island Evolution, Eric W. Schoen Jan 2021

Modeling Vegetation Effects On Barrier Island Evolution, Eric W. Schoen

Theses and Dissertations

Barrier islands play a significant role in protecting coastlines and harboring coastal habitats. In an effort to study and better understand the evolution of barrier island systems, a cellular model capturing various meteorological and environmental processes is proposed. Erosion due to wind, gravity, and marine processes are coupled with plant population effects. We demonstrate the inhibition of plant cover on sediment mobility, island migration, and erosion in the presence of sea level rise.

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A Comparison Of The Removal Of Estrogen Between Different Wastewater Treatment Processes, Danielle J. Jones Jan 2021

A Comparison Of The Removal Of Estrogen Between Different Wastewater Treatment Processes, Danielle J. Jones

Cal Poly Humboldt theses and projects

Pharmaceuticals are found in water systems and are classified as contaminants due to their adverse effects on numerous types of aquatic organisms. Estradiol, a natural occurring estrogen and ethinylestradiol, a common synthetic estrogen found in birth control, are a class of pharmaceuticals called endocrine-disruptive contaminants (EDC). These contaminants have been shown to cause developmental delays in fish as well as feminizing male fish in concentrations as low as 1 ng/L for both estradiol and ethinylestradiol, and bioaccumulating in mollusks and oysters. There are many natural and human-assisted methods for removing pharmaceuticals in water, and they are dependent on both the …

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Response Of Invertebrate Drift To Dam-Release Restoration Pulse Flows From Lewiston Dam On The Trinity River, Ca, Jasmine S. Williamshen Jan 2021

Response Of Invertebrate Drift To Dam-Release Restoration Pulse Flows From Lewiston Dam On The Trinity River, Ca, Jasmine S. Williamshen

Cal Poly Humboldt theses and projects

The widespread construction of dams to regulate rivers has dramatically altered aquatic ecosystems, but these impoundments also provide a unique opportunity to support freshwater conservation goals by implementing functional flow regimes designed to mitigate dam-related impacts on fisheries. Drifting invertebrates are an important food source for stream-dwelling juvenile salmonids such that drift feeding can be an energetically profitable foraging strategy, yet the effect of streamflow alterations on invertebrate drift dynamics is largely undetermined. Drift net samples were collected on four days before and four days during the ascending limb (14-42 m3/s) of restoration pulse flows in April 2020 …

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Led Illumination Spectrum Manipulation For Increasing The Yield Of Sweet Basil (Ocimum Basilicum L.), Md Momtazur Rahman, Mikhail Vasiliev, Kamal Alameh Jan 2021

Led Illumination Spectrum Manipulation For Increasing The Yield Of Sweet Basil (Ocimum Basilicum L.), Md Momtazur Rahman, Mikhail Vasiliev, Kamal Alameh

Research outputs 2014 to 2021

© 2021 by the authors. Licensee MDPI, Basel, Switzerland. Manipulation of the LED illumination spectrum can enhance plant growth rate and development in grow tents. We report on the identification of the illumination spectrum required to significantly enhance the growth rate of sweet basil (Ocimum basilicum L.) plants in grow tent environments by controlling the LED wavebands illuminating the plants. Since the optimal illumination spectrum depends on the plant type, this work focuses on identifying the illumination spectrum that achieves significant basil biomass improvement compared to improvements reported in prior studies. To be able to optimize the illumination spectrum, several …

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Detecting Sex-Related Changes To The Metabolome Of A Critically Endangered Freshwater Crayfish During The Mating Season, Emily Lette, Quinton Burnham, Nathan Lawler, Pierre Horwitz, Mary C. Boyce, David I. Broadhurst, Rodney Duffy, Annette Koenders Jan 2021

Detecting Sex-Related Changes To The Metabolome Of A Critically Endangered Freshwater Crayfish During The Mating Season, Emily Lette, Quinton Burnham, Nathan Lawler, Pierre Horwitz, Mary C. Boyce, David I. Broadhurst, Rodney Duffy, Annette Koenders

Research outputs 2014 to 2021

Captive breeding is a vital tool in the conservation of highly endangered species, as it is for the Margaret River hairy marron, Cherax tenuimanus, from the south west of Australia. A close relative, Cherax cainii, has almost completely displaced C. tenuimanus in the wild and is a successful aquaculture species, whereas C. tenuimanus has performed poorly in captivity. We used untargeted liquid chromatography-mass spectrometry to obtain metabolomic profiles of female and male C. tenuimanus held in controlled aquarium conditions during their reproductive period. Using repeated haemolymph sampling we tracked the metabolomic profiles of animals just prior to and …

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Dynamics And Fate Of Blue Carbon In A Mangrove–Seagrass Seascape: Influence Of Landscape Configuration And Land-Use Change, Maria E. Asplund, Martin Dahl, Rashid O. Ismail, Ariane Arias-Ortiz, Diana Deyanova, João N. Franco, Linus Hammar, Arielle I. Hoamby, Hans W. Linderholm, Liberatus D. Lyimo, Diana Perry, Lina M. Rasmusson, Samantha N. Ridgway, Gloria Salgado Gispert, Stéphanie D’Agata, Leah Glass, Jamal Angelot Mahafina, Volanirina Ramahery, Pere Masque, Mats Björk, Martin Gullström Jan 2021

Dynamics And Fate Of Blue Carbon In A Mangrove–Seagrass Seascape: Influence Of Landscape Configuration And Land-Use Change, Maria E. Asplund, Martin Dahl, Rashid O. Ismail, Ariane Arias-Ortiz, Diana Deyanova, João N. Franco, Linus Hammar, Arielle I. Hoamby, Hans W. Linderholm, Liberatus D. Lyimo, Diana Perry, Lina M. Rasmusson, Samantha N. Ridgway, Gloria Salgado Gispert, Stéphanie D’Agata, Leah Glass, Jamal Angelot Mahafina, Volanirina Ramahery, Pere Masque, Mats Björk, Martin Gullström

Research outputs 2014 to 2021

Context: Seagrass meadows act as efficient natural carbon sinks by sequestering atmospheric CO and through trapping of allochthonous organic material, thereby preserving organic carbon (C ) in their sediments. Less understood is the influence of landscape configuration and transformation (land-use change) on carbon sequestration dynamics in coastal seascapes across the land–sea interface. Objectives: We explored the influence of landscape configuration and degradation of adjacent mangroves on the dynamics and fate of C in seagrass habitats. Methods: Through predictive modelling, we assessed sedimentary C content, stocks and source composition in multiple seascapes (km-wide buffer zones) dominated by different seagrass communities in …

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A Temporal Record Of Microplastic Pollution In Mediterranean Seagrass Soils, Martin Dahl, Sanne Bergman, Mats Björk, Elena Diaz-Almela, Maria Granberg, Martin Gullström, Carmen Leiva-Dueñas, Kerstin Magnusson, Candela Marco-Méndez, Nerea Piñeiro-Juncal, Miguel Ángel Mateo Jan 2021

A Temporal Record Of Microplastic Pollution In Mediterranean Seagrass Soils, Martin Dahl, Sanne Bergman, Mats Björk, Elena Diaz-Almela, Maria Granberg, Martin Gullström, Carmen Leiva-Dueñas, Kerstin Magnusson, Candela Marco-Méndez, Nerea Piñeiro-Juncal, Miguel Ángel Mateo

Research outputs 2014 to 2021

© 2021 Elsevier Ltd Plastic pollution is emerging as a potential threat to the marine environment. In the current study, we selected seagrass meadows, known to efficiently trap organic and inorganic particles, to investigate the concentrations and dynamics of microplastics in their soil. We assessed microplastic contamination and accumulation in 210Pb dated soil cores collected in Posidonia oceanica meadows at three locations along the Spanish Mediterranean coast, with two sites located in the Almería region (Agua Amarga and Roquetas) and one at Cabrera Island (Santa Maria). Almería is known for its intense agricultural industry with 30 000 ha of plastic-covered …

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The Renaissance Of Odum's Outwelling Hypothesis In 'Blue Carbon' Science, Isaac R. Santos, David J. Burdige, Tim C. Jennerjahn, Steven Bouillon, Alex Cabral, Oscar Serrano, Thomas Wernberg, Karen Filbee-Dexter, Julia A. Guimond, Joseph J. Tamborski Jan 2021

The Renaissance Of Odum's Outwelling Hypothesis In 'Blue Carbon' Science, Isaac R. Santos, David J. Burdige, Tim C. Jennerjahn, Steven Bouillon, Alex Cabral, Oscar Serrano, Thomas Wernberg, Karen Filbee-Dexter, Julia A. Guimond, Joseph J. Tamborski

Research outputs 2014 to 2021

The term ‘Blue Carbon’ was coined about a decade ago to highlight the important carbon sequestration capacity of coastal vegetated ecosystems. The term has paved the way for the development of programs and policies that preserve and restore these threatened coastal ecosystems for climate change mitigation. Blue carbon research has focused on quantifying carbon stocks and burial rates in sediments or accumulating as biomass. This focus on habitat-bound carbon led us to losing sight of the mobile blue carbon fraction. Oceans, the largest active reservoir of carbon, have become somewhat of a blind spot. Multiple recent investigations have revealed high …

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White Pine Blister Rust Distribution In New Hampshire 1900-2018: Exploring The Impacts Of An Exotic Pathogen On Forest Composition And Succession, Janine Marr Jan 2021

White Pine Blister Rust Distribution In New Hampshire 1900-2018: Exploring The Impacts Of An Exotic Pathogen On Forest Composition And Succession, Janine Marr

Antioch University Dissertations & Theses

White pine blister rust (WPBR) has been affecting New Hampshire’s white pines for more than a century, yet no data exist on the long-term effects of the non-native disease on the state’s forests, particularly with respect to the regeneration and sustainability of white pine, and forest succession. This study aimed to address the gaps in the literature by exploring: 1) the current distribution, incidence, and severity of WPBR in New Hampshire; 2) the application of two historical hazard ratings models, one climatic, and one biotic; and 3) the long-term effects of the disease on forest composition, structure, and succession. Historical …

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Food Contact Surfaces: Challenges, Legislation And Solutions, Shubham Sharma, Amit Jaiswal, Brendan Duffy, Swarna Jaiswal Jan 2021

Food Contact Surfaces: Challenges, Legislation And Solutions, Shubham Sharma, Amit Jaiswal, Brendan Duffy, Swarna Jaiswal

Articles

Food contact surfaces (FCSs) include all surfaces that may come in contact with the food during production, processing, and packaging. Food processing industries encounter several challenges due to its microbial interaction with the FCSs, such as cross-contamination of pathogenic microorganisms or allergens in food, formation of biofilm, biodeterioration of food contact surface leads to food with reduced shelf-life and quality. A legal EU framework provides the fundamental postulates for the safety and inertness of all Food Contact Materials (FCMs). Legislations have an important role in providing regulatory guidance on the quality assurance systems and verifying their implementation as a means …

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Effects Of Multiple Stressors On Aquatic Macroinvertebrate Communities In A Mixed-Land-Use Watershed, Joellen Stivala Jan 2021

Effects Of Multiple Stressors On Aquatic Macroinvertebrate Communities In A Mixed-Land-Use Watershed, Joellen Stivala

Graduate Theses, Dissertations, and Problem Reports (ETD)

As urbanization continues, there is a need to identify and understand environmental stressors that impact stream condition in mixed-land-use watersheds. This study analyzed four years of aquatic macroinvertebrate community and environmental data collected from ten sites located at the mouths of first-order tributaries and along the main stem creek of a 23-km2, mixed-land-use watershed in central Appalachia. The main objectives were to 1) determine stream ecological integrity by analyzing stream macroinvertebrate taxonomic and trait-based composition and 2) assess which of 23 environmental variables explained significant variability in common community composition metrics (WVSCI, GLIMPSS, Biotic Index, % clingers, etc.). …

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Resource Characterization And Utilization Of Lepironia Articulata (Retz.) Domin At Kg. Beris Tok Kuand Kg. Beting Lintang, Terengganu, Shoma Tani Jan 2021

Resource Characterization And Utilization Of Lepironia Articulata (Retz.) Domin At Kg. Beris Tok Kuand Kg. Beting Lintang, Terengganu, Shoma Tani

Student Works (2020-2029)

This research focused on how handicrafts could contribute to sustainable community development with natural resource management. This research aims to characterize Lepironia articulata as a resource by taxonomy and distribution patterns, examine its utilization through group and semi-structured interviews with ten local residents who got involved in handicraft productions at two selected villages in Setiu Wetlands of Terengganu state and identify their capacity development opportunities by following a guideline provided by United Nations Development Programme. This research clarified that the height of Lepironia articulata in Setiu Wetlands was shorter than the records of the other description and the other site …

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Northeast Pond 2021 Water Quality Highlight Report, Amanda Mcquaid, Robert Craycraft Jan 2021

Northeast Pond 2021 Water Quality Highlight Report, Amanda Mcquaid, Robert Craycraft

UNH Cooperative Extension

A Water Quality Highlight Report by UNH CE Lakes Lay Monitoring Program for Northeast Pond (of Milton Three Ponds) in Milton, NH in 2021.

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Depot Pond 2021 Water Quality Highlight Report, Amanda Mcquaid, Robert Craycraft Jan 2021

Depot Pond 2021 Water Quality Highlight Report, Amanda Mcquaid, Robert Craycraft

UNH Cooperative Extension

A Water Quality Highlight Report by UNH CE Lakes Lay Monitoring Program for Depot Pond (of Milton Three Ponds) in Milton, NH in 2021.

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Loon Lake 2021 Water Quality Full Annual Report, Amanda Mcquaid, Robert Craycraft Jan 2021

Loon Lake 2021 Water Quality Full Annual Report, Amanda Mcquaid, Robert Craycraft

UNH Cooperative Extension

A Water Quality Report by UNH CE Lakes Lay Monitoring Program for Loon Lake in Effingham, NH.

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Conway Lake 2021 Water Quality Highlight Report, Amanda Mcquaid, Robert Craycraft Jan 2021

Conway Lake 2021 Water Quality Highlight Report, Amanda Mcquaid, Robert Craycraft

UNH Cooperative Extension

A Water Quality Highlight Report by UNH CE Lakes Lay Monitoring Program for Conway Lake in Conway, NH (Station 2, Gull) in 2021.

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Kelp-Associated Microbes Facilitate Spatial Subsidy In A Detrital-Based Food Web In A Shoreline Ecosystem, Charu Lata Singh, Megan J. Huggett, Paul S. Lavery, Christin Säwström, Glenn A. Hyndes Jan 2021

Kelp-Associated Microbes Facilitate Spatial Subsidy In A Detrital-Based Food Web In A Shoreline Ecosystem, Charu Lata Singh, Megan J. Huggett, Paul S. Lavery, Christin Säwström, Glenn A. Hyndes

Research outputs 2014 to 2021

Microbes are ubiquitous but our knowledge of their effects on consumers is limited in benthic marine systems. Shorelines often form hotspots of microbial and detritivore activity due to the large amounts of detrital macrophytes that are exported from other coastal ecosystems, such as kelp forests, and accumulate in these systems. Shoreline ecosystems therefore provide a useful model system to examine microbial-detritivore interactions. We experimentally test whether bacteria in the biofilm of kelp provide a bottom-up influence on growth and reproductive output of detritivores in shorelines where detrital kelp accumulates, by manipulating the bacterial abundances on kelp (Ecklonia radiata). The growth …

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Genetic And Ecological Consequences Of Recent Habitat Fragmentation In A Narrow Endemic Plant Species Within An Urban Context, Nicola Delnevo, Andrea Piotti, Michele Carbognani, Eddie J. Van Etten, William D. Stock, David L. Field, Margaret Byrne Jan 2021

Genetic And Ecological Consequences Of Recent Habitat Fragmentation In A Narrow Endemic Plant Species Within An Urban Context, Nicola Delnevo, Andrea Piotti, Michele Carbognani, Eddie J. Van Etten, William D. Stock, David L. Field, Margaret Byrne

Research outputs 2014 to 2021

Understanding the timescales that shape spatial genetic structure is pivotal to ascertain the impact of habitat fragmentation on the genetic diversity and reproductive viability of long-lived plant populations. Combining genetic and ecological information with current and past fragmentation conditions allows the identification of the main drivers important in shaping population structure and declines in reproduction, which is crucial for informing conservation strategies. Using historic aerial photographs, we defined the past fragmentation conditions for the shrub Conospermum undulatum, a species now completely embedded in an urban area. We explored the impact of current and past conditions on its genetic layout …

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