1,721,042 research outputs found
Connecting Environmental Management and Stakeholders Via Social Media
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Monitoring the Phenology of Chromolaena odorata to Inform Management of an Incipient and Highly Invasive Species in Hawaiʻi
Get PDFIncludes a 21 page paper titled: "Monitoring the Phenology of Chromolaena odorata to Inform Management of an Incipient and Highly Invasive Species in Hawaiʻi" and a 20 page presentation titled: "Samantha Shizuru Final Capstone Presentation"The invasion of nonnative species has negative impacts on ecological processes and ecosystem services, and these impacts are being exacerbated by global trade and climate change. In Hawaiʻi, invasive species, along with associated biodiversity loss and habitat degradation, are the greatest threat to the archipelago’s endemic biota. In 2011, Chromolaena odorata (Devil’s Weed), a globally dispersed invasive species, was first detected in the Kahuku Training Area (KTA) on the Island of O’ahu. Known as one of the world’s worst weeds, C. odorata is an aggressive colonizer of disturbed environments that, once established, creates dense monotypic stands that prevent the growth and regeneration of other species. Since its discovery in 2011, C. odorata has spread to occupy ~1,042 ha in KTA. The objective of this study was to develop a C. odorata phenology monitoring program to investigate the correlation between observed phenophases, seed germination, and climate variables to inform integrated weed management (IWM). To address this objective, I monitored the phenology (i.e., phenophases or life cycle events) and plant condition of C. odorata every two weeks in KTA for 12 months in five study sites and recorded monthly precipitation and temperature from the closest weather station. In addition, I collected soil samples in each study plot monthly and monitored seedling emergence in the greenhouse over 12 months. Overall, I found that flowering occurred between November – February and fruit set occurred between February – April, with smaller flowering and fruiting events in May – June and June – July, respectively. Monthly precipitation and temperature had strong explanatory power for both overall plant condition and productivity-related phenophases (i.e., flower production and seed drop). In addition, a positive correlation existed between seedling germination and the presence of flowers. Based on this information, chemical and mechanical control should be conducted between August and October to reduce large flowering events beginning in November. Overall, the results of this study will allow for the adjustment and optimization of IWM practices for this species based on phenophases that are more susceptible to weed control methods, as well as informing the use of phenology in controlling and managing invasive species more broadly
Recommendations for Community-Based Albizia Removal and Streamside Restoration
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Assessment of Habitat Change for the Critically Endangered Kiwikiu
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Evaluating environmental educational programs in Hawaiʻi: A case study of an O’ahu private high school
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Benefits of Vegetation Management for the Reduction of Fire Risk
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The effectiveness of video-based education for marine conservation
Get PDFAs global marine ecosystems face increasing threats, educators must adopt effective strategies to promote conservation awareness and support responsible environmental behavior. Videos have become a key tool in marine education programs, yet few studies have examined their effectiveness or outlined best practices for implementation. This study explores the role of video-based education in two marine programs: the Hanauma Bay Education Program (HBEP) in Hawaiʻi and the Coral Triangle Center (CTC) in Bali, Indonesia, to assess how videos influence visitor engagement, knowledge retention, and conservation behavior. I addressed three key objectives: (1) evaluate the effectiveness of videos in orienting, guiding, and educating visitors, (2) identify which aspects of videos enhance their effectiveness, and (3) determine best practices for implementing videos in marine education programs. I used a mixed-methods approach that included a literature review, visitor surveys at HBEP, video engagement analytics from CTC, and the production and deployment of educational videos at CTC. At HBEP, 96 percent of visitors reported that visuals helped them understand key concepts, and 85 percent said the video influenced their behavior in the water. Respondents most often remembered messages related to Hawaiian culture, marine life etiquette, and reef protection. Visitors also suggested adding practical tips, reef deterioration animations, and more footage of marine species. At CTC, I produced and edited eight short-form videos and supported 17 social media posts on the Saving Oceans Now Instagram account. These efforts led to a major increase in engagement, with likes, shares, and comments rising from 1,273 in April to June 2023 to 34,157 in April to July 2024, and total profile views reaching 76,906. Youth-centered, localized videos such as the Ocean Keeper Club recap performed best. Strategic practices such as optimizing post schedules, tailoring content to Indonesian users aged 25 to 34, and boosting posts significantly improved visibility and interaction. Findings demonstrate that video-based education effectively conveys marine conservation messages, especially when using compelling visuals, narrative storytelling, and interactive elements. This research contributes best practices for marine educators and offers a guidesheet for organizations aiming to strengthen environmental outreach through video
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Which Factors Influence Oʻahu ʻElepaio (Chasiempis ibidis) Nesting Success in Rodent-Controlled and Uncontrolled Areas?
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