bluuebunny/crossref_metadata_2025 huggingface dataset:
Infrastructure Corridors: Leveraging Linear Systems for Public Life
Authors:   SWA Group, DOMLESKY ANYA
Published: December 2023

The community benefits of public open space were made ever more apparent during lockdowns in U.S. cities during the COVID-19 pandemic. Parks and open streets became outdoor living rooms, birthday party venues, protest sites, meeting places, date spots, restaurants, and safe group gathering locations. Their function as necessary social infrastructure in the sense that sociologist Eric Klinenberg has defined it, became visible daily. At the same time a racial reckoning and climate emergency pressed for action while municipal budgets strained to meet basic needs. We know public space provision is key to democratic life for both dissent and community building. We also know we need to densify cities and make urban spaces livable and desirable if we want to reduce climate impacts and individual carbon footprints. Developing linear parks and open space systems that take advantage of existing infrastructure corridors is one promising option to meet these goals. These spaces utilize infill sites either by reuse or co-use of transportation infrastructure and due to their long form, have lots of edge which provides access to a greater number of people than a traditional parcel. And also, like all parks, they have the capacity to mitigate adverse urban impacts like heat, noise, and flooding. Our practice- based research group has studied four infrastructure types that were generated from the dominant transportation infra- structures of past waves of economic activity: port, river, rail, and road. Looking at over 400 precedent projects across the globe, we have distilled out five main strategies that inform the design, development, and use of these corridors and their associated storage areas. Contextualizing urban design and open space projects through the lens of their originating infrastructural footprint has not been attempted to date. This research paves the way for understanding the catalysts for infrastructure reuse or co-use, the unique benefits of linear systems, lessons learned from accompanying development patterns, exclusive funding streams, and political returns of investing in this type of open space. The research has been impactful in making the case for linear parks and systems as high-benefit, lower cost method of open space provision for American metro areas.
Sustainability Policy and Zero-Carbon Communities: The Role of California’s Community Colleges
Authors:   California College of the Arts, SATA LEIGH T.
Published: December 2023

Overwhelming scientific data confirms that the primary cause of global warming is anthropogenic greenhouse gas (GHG) emissions (IPCC, 2014). The resulting extreme weather events (sea level rise and extended wildfire season amongst others) contrast with the discrediting of climate science at the national level beginning as early as the late 1980s (McCright & Dunlap, 2011). This discrediting has led to a lack of national sustainability policy and has compelled the State of California to take a leadership role in addressing the issue. California’s legislative policies and Gubernatorial executive orders include the reduction of GHG and electricity consumption by targeted dates (California Air Resources Board, 2006, California Office of the Governor, 2020). State Agencies, including California’s Community College system, have financial incentives to meet these goals.
Finding Resilience in Unexpected Places: Why Design Still Matters in Shrinking Rural Communities
Authors:   Iowa State University, Luz Ana , Das Biswa ,   Iowa State University, Peters David J. ,   Iowa State University, Drinkwater Jennifer ,   Iowa State University, Zarecor Kimberly E. ,   Iowa State University
Published: December 2023

Most small and rural communities in the United States are shrinking. This population loss is often accompanied by economic and social upheaval—job losses, out migration of young people, school closures, reductions in local services, and deteriorating physical infrastructure. Because design firms cluster in metropolitan areas and most rural commissions are for private clients, architects are largely absent from these places. The AIA Framework for Design Excellence calls for the professional community to enable more sustainable, resilient, and inclusive environments, yet rural places pose a challenge because they remain a strikingly underserved market for architectural services. How can this vision for Design Excellence extend its reach into places where new construction is rare, and architects are not present to learn from and develop relationships with potential clients?This paper presents an overview of an interdisciplinary research project at Iowa State University funded by a $1.5 million grant from the National Science Foundation. The research begins with this question: why do people in some rural towns perceive their quality of life to be increasing even when the population continues to shrink? Using twenty years of survey data about quality of life, the team identified small rural communities in Iowa where the typical association of population loss with community decline did not appear to hold true. Through interviews, site visits, spatial analysis, and data analysis using machine learning and other methods, the team is working to better understand what influences people’s perceptions of quality of life. Understanding more about these unexpectedly resilient communities requires conversations and building trust in places where few outsiders ever visit. Examples of projects in towns working with the research team include adaptive reuse of closed schools and other abandoned properties; improved recreational spaces and parks; and repurposing underused commercial properties.
Implementación de inspecciones parciales remotas en instalaciones internas de gas natural de red para el caso de la empresa Fullgas
Authors:   , Grosso Federico
Published: December 2023

El presente trabajo final de maestría se realizó a partir de la propuesta de un plan de intervención para abordar una problemática puntual en el proceso de inspecciones parciales de instalaciones nuevas o existentes en la empresa Distribuidora de Gas Natural Fullgas S. A. En esencia, el plan de intervención consiste en la identificación y análisis de tal problemática a partir de la formulación de una serie de elementos de diagnóstico, con una consecuente propuesta de mejora con el objeto de abordarla y superarla. Es así como en el escrito se llega a conclusiones respecto de disfuncionalidades existentes en el mencionado proceso de inspecciones parciales, generadoras de un impacto relevante en la debida operatoria de la empresa objeto de estudio, con efectos concretos en su eficiencia, en su rentabilidad y hasta en el riesgo potencial de sufrir sanciones por parte del correspondiente ente estatal regulador de la actividad de distribución de gas. Como resultado del desarrollo del plan de intervención propuesto, se enuncian una serie de medidas factibles de ser implementadas con la actual disponibilidad de recursos de la empresa y en un horizonte de corto-mediano plazo. El trabajo comienza con una primera sección destinada a breves aspectos metodológicos, que incluye los objetivos propuestos, una definición de límites y una identificación de las fuentes de datos utilizados en el análisis. Luego, una segunda sección presenta el caso de estudio, incluyendo referencias sobre el contexto del sector del gas natural en la Argentina. Una tercera sección ya se consagra a proveer una referencia teórica útil para interpretar qué tipo de herramientas de análisis se utilizaron. Por su parte, una cuarta y central presenta los elementos de diagnóstico recién mencionados, la que habilita la finalización del trabajo con una quinta –y también central- proponiendo una propuesta de mejora para abordar la problemática identificada en el diagnóstico. Por último, se cierra el escrito con una breve sección destinada a conclusiones de todo lo analizado y propuesto.
Knowledge Creating Communities for teacher professional learning about data literacy
Authors: Robertson Judy , Abaci Serdar , Linklater Holly , Farrell Kate , Kanwal Jasmeen
Published: December 2023

Data literacy is increasingly important to enable school-aged learners to make sense of a data-rich world. Educating teachers about how to develop their learners’ data literacy is of high priority. This paper presents qualitative analysis of the development of confidence and competence in teaching data literacy among teachers who are members of two Knowledge Creating Communities (KCC) encompassing 42 schools. Successful factors of the KCC were peer discussion and reflection on practice within a supportive environment, respect and reciprocity between teachers and university staff; input from experts in data, and access to high-quality educational resources including pre-prepared datasets.
Puntuación de trauma revisado como predictor de mortalidad intrahospitalaria en pacientes politraumatizados atendidos en el Hospital Belén de Trujillo, Perú
Authors: Macedo Pinedo Christian , Villena Ruiz Miguel Ángel
Published: December 2023

Objetivo: Determinar si el score de trauma revisado es predictor de mortalidad intrahospitalaria en pacientes politraumatizados atendidos en el Hospital Belén de Trujillo. Material y métodos: Se realizó un estudio observacional, analítico, retrospectivo, transversal de pruebas diagnósticas, se identificaron pacientes que fueron admitidos por politraumatismo y fueron hospitalizados en el Departamento de Cirugía General durante el periodo comprendido entre enero del 2017 a diciembre del 2021; en una muestra de 100 pacientes se evaluó la mortalidad. Resultados: La edad promedio fue 47,18 ± 20,40 vs 41,13 ± 18,37 en aquellos que fallecieron y sobrevivieron; el 55% y 63,33% de los fallecidos y sobrevivientes fueron varones en los grupos de estudio. La coagulopatía, acidosis metabólica y SRIS estuvieron asociadas a la mortalidad. Se observó una proporción de 72,50% y 3,33% de RTS < 6 en los pacientes politraumatizados que fallecieron y sobrevivieron (p = 0,001); se obtuvieron valores de sensibilidad: 73% IC 95% [59% - 86%], especificidad: 97% IC 95% [92% - 100%], valor predictivo positivo: 94% IC 95% [85% - 100%] y valor predictivo negativo: 84% IC 95% [75% - 93%]. El área bajo la curva fue del 96,50% en la predicción de mortalidad por el RTS en pacientes con politraumatismo. Conclusión: El score de trauma revisado es un buen predictor de mortalidad en politraumatizados.
Eleştirel Okuma Temelli Edebiyat Eleştirisi Rubriği Geliştirme
Authors: TURHAN Osman , BAŞ Bayram
Published: December 2023

Bu çalışmada Bloom taksonomisini, edebiyat kuramlarını ve eleştirel düşünme standartlarını temel alan analitik edebiyat eleştirisi rubriği geliştirilmiştir. Analitik rubrik ile roman veya uzun hikâye türündeki eserlerin bölümlerine/kesitlerine ilişkin cümle ve paragraf boyutundaki yanıtların puanlanması amaçlanmaktadır. 4'lü likert ölçeği tipinde hazırlanan rubriğin kavrama, alımlama, analiz, sentez ve değerlendirme olmak üzere beş maddesi bulunmaktadır. Kavrama maddesi hikâyenin yüzey yapısını anlama, alımlama maddesi hikâye ve okur arasında etkileşim kurma, analiz ve sentez maddesi hikâyenin derin yapısını anlama ve değerlendirme maddesi hikâyenin yargılanması hakkındadır. Rubriğin maddelerine ilişkin kapsam geçerlik oranları ve rubriğin geneline ilişkin kapsam geçerlik indeksi 1,00 olarak hesaplanmıştır. Rubriğin maddelerine ve geneline ilişkin puanlayıcılar arası korelasyon katsayıları r>,79 (en düşük değer), tek puanlayıcı korelasyon katsayıları r>,88 (en düşük değer) olarak hesaplanmıştır. Kapsam geçerlik oranlarının ve kapsam geçerlik indeksinin minimum değerin üstünde olması ve sınıf içi korelasyon katsayılarının mükemmel uyuma işaret etmesi rubriğin geçerli ve güvenilir olduğunu göstermektedir.
Formación de Profesores de Matemáticas para la Sostenibilidad (FPMpS): una agenda de investigación emergente
Authors: Alsina Ángel
Published: December 2023

Los artículos contenidos en este Número Especial sobre la Formación del Profesorado de Matemáticas para la Sostenibilidad (FPMpS) aportan evidencias imprescindibles para avanzar en la triple transformación social, medioambiental y económica asociada al desarrollo sostenible, mostrando cómo esta agenda emergente de investigación en educación matemática está empezando a contribuir a la aparición de datos relevantes para la creación de soluciones sociales positivas.
The development of students’ mathematical reasoning in Calculus courses
Authors: Trevisan André Luis , De Oliveira Araman Eliane Maria , De Lurdes Serrazina Maria
Published: December 2023

The aim is to understand how the students’ involvement in solving and discussing exploratory tasks, combined with the teacher’s actions, can contribute to the development of their mathematical reasoning (MR) in a Differential and Integral Calculus course. The study was qualitative, with an interpretive approach, and the participants were undergraduate engineering students. The data consists of (a) protocols containing written records of students’ discussions; (b) audio recordings of these discussions; and (c) video of the plenary discussion facilitated by the teacher. We discuss the MR processes that students mobilize, in particular conjecturing, generalizing, and justifying. We point out which of the teacher’s actions can contribute to the development of MR, in a continuous and growing movement, essentially related to the deepening of discussions based on elements presented by the students themselves, and the opportunities that are created in this process.
Emociones de un formador de maestros enseñando Didáctica de las Matemáticas en un contexto online
Authors: Marbán Mónica , Montes Miguel , Tolmos Piedad
Published: December 2023

El objetivo de este estudio es caracterizar las emociones que moviliza y declara sentir una formadora de maestros durante algunas sesiones impartiendo la asignatura de “Matemáticas y su Didáctica I”. A través de un estudio de caso instrumental y desde una perspectiva interpretativa se explora y analiza cómo influye en ellas el cambio de docencia a un contexto online debido al COVID-19. El modelo OCC de la estructura cognitiva de las emociones permite identificarlas y clasificarlas en base a la situación desencadenante y su valoración interna (sistema propio de metas, normas y actitudes). El análisis muestra las formas de procesamiento de información de la formadora y sus estrategias de afrontamiento ante las realidades que se le presentan. El estudio proporciona herramientas de conocimiento de los objetivos, actitudes y concepciones del docente a través de sus emociones, un primer paso para mejorar su gestión en el futuro.
Impacto del proceso de formación del maestro en su afectividad hacia las Matemáticas
Authors: Romero-García Carmen , Manzanal Martínez Ana Isabel , Palacios Ortega Alicia
Published: December 2023

En este trabajo se evalúa la eficacia de un proceso de formación basado en la resolución de problemas matemáticos mediante la experimentación y el uso de materiales manipulativos, sobre el dominio afectivo, definido como creencias, emociones y actitudes hacia las matemáticas de futuros maestros. Se ha utilizado un diseño preexperimental con grupo pretest y postest sobre una muestra de 91 estudiantes de los grados en Maestro en Educación Infantil y Primaria. El instrumento utilizado es un autoinforme sobre creencias, emociones y actitudes acerca de las matemáticas validado previamente. El diseño de instrucción ha incidido de forma positiva en el dominio afectivo, pues ha generado cambios significativos en sus creencias acerca de la naturaleza de las matemáticas y de su enseñanza y aprendizaje, del papel del docente, de ellos mismos como aprendices de matemáticas y en sus actitudes y emociones, pues muestran un mayor interés, satisfacción y seguridad como futuros maestros.
Conocimiento estadístico del futuro profesorado de educación primaria en la representación de datos
Authors: Izagirre Ane , Anasagasti Jon , Berciano Ainhoa
Published: December 2023

Este artículo analiza si el futuro profesorado de educación primaria distingue las categorías/valores de la variable de las frecuencias absolutas, selecciona y construye el gráfico adecuado según el tipo de variable y cómo justifica tal elección. Así, presentamos un estudio de caso de corte mixto con predominancia cualitativa y carácter exploratorio, con una muestra de 108 futuros docentes en el que se ha diseñado un cuestionario ad-hoc con 4 ítems. Los resultados indican que el futuro profesorado tiene dificultades para distinguir las categorías de una variable cualitativa de sus frecuencias absolutas. Los errores más comunes en la elección del gráfico son realizar gráficos de líneas para variables cualitativas e histogramas para variables cualitativas o cuantitativas discretas sin agrupar. Tanto el grado de corrección en la realización del gráfico como su justificación no es suficiente, lo que evidencia la necesidad de mejorar su alfabetización estadística.
Coral Covers and the Abundance of Reef Fish in Community Base Management Marine Protected Area (CBM-MPA) Bahoi Village North Sulawesi, Indonesia
Authors: Siahaan Dedy Octavian , Mandagi Stephanus V. , Wagey Billy T. , Sumilat Deiske A.
Published: December 2023

In the last few decades, coral reef ecosystem has been under significant pressure due to anthropogenic impacts and naturally driven factors. The coral reef ecosystem is unique because it has very high biodiversity and many organisms depend on its existence. Every organism in a coral reef ecosystem uniquely contributes to how coral reef communities survive and function. However, coral reef ecosystems are also vulnerable to pressures that cause degradation, interfering with the ecosystem balance. This study aims to monitor the ecological condition of coral reefs and the abundance of reef fish to see how the MPA program in Bahoi village helps the coral reef ecosystem from degradation. The data was collected using Line Intercept Transect (LIT) method, which was drawn 70 meters transect line horizontally at a depth of 3-5 meters. The same transect line was also used to collect data about reef fish by using a Visual Census. The observation distance length is 2.5 meters to the left and right of the transect line. Results of the study showed that the coral cover of MPA Bahoi Village is in the Fair category and the abundance of reef fish in the MPA area is in the Moderate category.
 Keywords: Coral Cover; Coral Reef; Marine Protected Area (MPA); Monitoring; Reef Fish
Length-weight Relationship and Reproduction of Halfbeak Hemiramphus lutkei Valenciennes, 1847 In The Waters Around Nain Island, North Minahasa Regency
Authors: Umasangadji Muhammad Hasril , Bataragoa Nego E. , Kondoy Khristin I. F. , Lumingas Lawrens .J. L . , Mantiri Rose. O.S.E , Lumoindong Frans
Published: December 2023

Abstract

The waters around Nain Island have quite a lot of biological resources. One of the resources in these waters is the halfbeak Hemiramphus lutkei. This study aims to determine the relationship between length-weight and reproduction of the halfbeak Hemiramphus lutkei. The length-weight relationship, growth patterns and condition factors. Reproduction includes sex ratio, gonadal maturity level, gonadal maturity index and fecundity. Fish sampling were taken from the catches of fishermen. The number of samples required is 200, the samples are taken twice in two months from June-July. The length-weight relationship of male  was W= 0.1705L1.8204 negative allometric growth pattern and female fish W = 0.0572L2.1962 negative allometric growth pattern. The condition factor of male and female where 0.98 ± 0.06 and 1.03 ± 0.07 respectively. The sex ratio of male and female (1: 0.835). The gonad maturity level of male (immature, developing, mature, ripe and spent) was found in June and female (immature, developing, mature, ripe and spent) found in June and July. The fecundity of ranged from 923 – 3,578 eggs with an average of 1,899 ± 666.

Keywords: Length-weight, growth patterns, gonad, fekundity

ABSTRAK

            Perairan Sekitar Pulau Nain ialah perairan yang memiliki cukup banyak sumberdaya hayatinya. Salah satu sumberdaya yang berada di perairan tersebut yaitu, ikan julungjulung Hemiramphus lutkei. Penelitian ini bertujuan untuk mengetahui hubungan panjang-berat dan reproduksi ikan julungjulung Hemiramphus lutkei. Hubungan panjang-berat meliputi pola pertumbuhan dan faktor kondisi. Reproduksi meliputi rasio kelamin, tingkat kematangan gonad, indeks kematangan gonad dan fekunditas. Lokasi pengambilan sampel ikan diambil di perairan sekitar Pulau Nain dan sampel diambil dari hasil tangkapan nelayan. Jumlah sampel yang diperlukan sebanyak 200 ekor, sampel diambil sebanyak dua kali dalam dua bulan dari Juni-Juli. Hubungan panjang-berat ikan julungjulung jantan yaitu W= 0,1705L1,8204 pola pertumbuhan allometrik negatif. Ikan julungjulung betina W = 0,0572L2,1962 pola pertumbuhan allometrik negatif. Faktor kondisi ikan julungjulung jantan dan betina bernilai 0,98 ± 0,06 dan 1,03 ± 0,07. Rasio kelamin ikan julungjulung jantan dan betina (1:0,835). Tingkat kematangan gonad ikan julungjulung jantan (I, II, III, IV dan V) ditemukan pada setiap bulan Juni. Tingkat kematangan gonad ikan julungjulung betina (I, II, III, IV dan V) ditemukan pada setiap sampel pada bulan Juni maupun Juli. Fekunditas ikan julungjulung berkisar antara 923 – 3.578 butir dengan rata-rata 1.899 ± 666.

Kata Kunci: Panjang-berat, pola pertumbuhan, gonad, fekunditas
Analysis of fishing season for tuna (Thunnus spp.), little tuna (Euthynnus sp.) and skipjack (Katsuwonus pelamis) in FMA 716
Authors: Tuyu Adel M. , Luasunaung Alfret , Sumilat Deiske A. , Manoppo Lefran , Kaparang Frangky E. , Mantiri Rose O. S. E. , Warouw Veibe
Published: December 2023

Economically important pelagic fish species in FMA 716 include skipjack (Katsuwonus pelamis), tuna (Thunnus spp.) and frigate tuna (Euthynnus sp.), these pelagic fish species are caught intensively. This study aims to provide information on the appropriate season for catching tuna, skipjack and tuna in FMA 716. The results of the study show the pattern of the tuna, skipjack and frigate tuna (TCT) fishing season based on the catches landed in PPS Bitung and PPP Tumumpa with fishing areas in FMA 716, i.e. the results vary every year but the peak of the fishing season occurs in the eastern transitional season. West - September, October and November. Peak fishing season for skipjack and tuna occurs three times and frigate tuna 2 times in 5 years.

Keywords: catching season, Katsuwonus pelamis, Thunnus spp and Euthynnus sp,FMA 716

 

Abstrak:

Jenis ikan pelagis ekonomis penting di WPP 716 antara lain adalah cakalang (Katsuwonus pelamis), tuna (Thunnus spp.) dan  tongkol (Euthynnus sp.), jenis – jenis ikan pelagis tersebut ditangkap secara intensif. Penelitian ini bertujuan memberikan  informasi musim yang tepat untuk melakukan penangkapan ikan tuna, cakalang dan tongkol di WPP 716. Hasil penelitian menujukan pola musim penangkapan ikan Tuna, Cakalang dan Tongkol (TCT) berdasarkan hasil tangkapan yang didaratkan di PPS Bitung dan PPP Tumumpa dengan wilayah penangkapan di WPP 716 yaitu hasilnya bervariasi setiap tahunnya tetapi yang terbanyak puncak musim penagkapan ikan  terjadi pada musim masa peralihan timur-barat yaitu bulan September, Oktober dan November. Puncak musim penangkapan ikan cakalang dan tuna terjadi sebanyak tiga kali dan ikan tongkol 2 kali  dalam 5 tahun.

Kata kunci : Musim penangkapan ikan tuna, tongkol dan cakalang, WPP 716
The Effectiveness of Cylindrical Attractors Against Squid Egg Attachment in Manado Bay Waters
Authors: Angge Irawan , Patty Wilhemina , Pangalila Fransisco P.T.
Published: December 2023

Data collection in this study used a descriptive method, namely collecting, describing, and describing events systematically and accurately in accordance with the objects observed. This method aims to provide a systematic, factual, and accurate picture of the facts, nature, and relationships between phenomena, test hypotheses, make predictions and get the meaning and implications of the problems investigated. It can be seen that the attachment of squid eggs in the second location has not been observed during observations from August 2022 to September 2022. Observations at the East Malalayang One location did not find any laying of eggs, due to cloudy water conditions, while the two West One Malalayang locations found sticking of eggs with a total of 241 eggs attached, the number of attachments to the iron type attractor was 202 squid eggs and to the drum type namely 39 squid eggs. Squid attractors in the form of iron are mostly attached to eggs where the effectiveness rate is between 83.8% while for the type of used drum attractor, it is only around 16.2%. The form of the iron attractor is more effective because the iron attractor's cover is covered with parent nets. It can also be seen that the effectiveness of attaching squid eggs according to the level of water depth, for the effectiveness of squid sticking at a depth of 3 meters (53.53%) compared to only 5 meters (46.47%).
Keywords: Attractor, Squid eggs, Manado Bay
Abstrak
Pengambilan data dalam penelitian ini menggunakan metode deskriptif yaitu mengumpulkan, menguraikan, dan menggambarkan peristiwa secara sistematis dan akurat sesuai dengan objek yang diamati. Tujuan penggunaan metode ini yaitu untuk memberikan gambaran secara sistematis, faktual dan akurat tentang fakta, sifat, serta hubungan antara fenomena, menguji hipotesa, membuat prediksi dan mendapatkan makna serta implikasi dari masalah yang diselidiki. Pengamatan di lokasi Malalayang Satu Timur tidak ditemukan penempelan telur, dikarenakan kondisi perairan yang keruh, sedangkan lokasi dua Malalayang Satu Barat ditemukan penempelan telur dengan jumlah penempelan 241 telur, jumlah penempelan pada atraktor tipe besi yakni 202 telur cumi dan pada tipe drum yakni 39 telur cumi. Atraktor cumi berbentuk besi lebih banyak di tempeli dengan telur dimana tingkat efektifitasnya antara 83,8% sedangkan untuk tipe atraktor drum bekas hanya sekitar 16,2%.  Bentuk atraktor besi lebih efektif karena bagian penutup atraktor besi semuanya ditutupi jaring paranet. Terlihat juga efektivitas penempelan telur cumi menurut tingkat kedalaman perairan, untuk efektivitas cumi yang menempel pada kedalaman 3 meter yakni (53,53%) dibandingkan 5 meter hanya (46,47%).           
 Atraktor; Telur cumi-cumi; Teluk Manado
Condition of Coral Reefs in the Waters of Kalasey Satu Village, Minahasa Regency, North Sulawesi
Authors: Pitoy Israel , Rembet Unstain N. W. J. , Rondonuwu Ari B. , Wantasen Adnan S. , Kambey Alex D. , Manu Gaspar , Tombokan John L.
Published: December 2023

The waters of Kalasey I Village have various resources and environmental services that are the potential to be utilized sustainably, such as tourism. The development activities in the tourism sector look so fast in this area with the establishment of several tourism infrastructures, such as diving centers, cottages, resorts,s and restaurants. These activities are thought to be able to affect the coral reef ecosystem. This study aims to determine the coral reef conditions, especially the reef flat, based on the percent cover of the live corals. Data collection was carried out at a depth of 3 meters with 3 replications using an Underwater Photo Transect (UPT) technique. Data obtained were analyzed using Coral Point Count with excel extension (CPCe) software. Based on the percent cover of live corals, the condition of coral reefs in the Kalasey 1 village waters was classified as poor with a coral cover percentage of 2.93%.
Keywords: Tourism development, Underwater Photo Transect (UPT), percent cover, coral point count (CPCe)
Abstrak
Perairan di Desa Kalasey I memiliki berbagai sumberdaya serta jasa lingkungan yang berpotensi untuk dimanfaatkan secara berkesinambungan seperti potensi pariwisata. Kegiatan pembangunan di sektor pariwisata terlihat begitu pesat di wilayah ini dengan berdirinya sejumlah infrastruktur pariwisata seperti diving center, cottage, resort dan rumah makan, dimana aktivitas tersebut diduga dapat mempengaruhi ekosistem terumbu karang. Penelitian ini bertujuan untuk mengetahui kondisi terumbu karang, khususnya rataan terumbu (reef flat), berdasarkan persentase tutupan karang di perairan Desa Kalasey I Kecamatan Mandolang Kabupaten Minahasa. Pengambilan data dilakukan pada kedalaman 3 meter dengan 3 ulangan, menggunakan teknik Underwater Photo Transect (UPT) dan data yang diperoleh dianalisis menggunakan software Coral Point Count with excel extension (CPCe). Diperoleh hasil kondisi terumbu karang tergolong dalam kategori miskin dengan persentase tutupan karang sebesar 2.93 %.
Kata kunci: Pembangunan pariwiata, Underwater Photo Transect (UPT), persen tutupan, coral point count (CPCe)
Molecular Phylogenetic Position of Bacillus sp Bacteria Isolated from Rotifer Culture Medium Based on Fisheries Waste Diet
Authors: Wullur Stenly
Published: December 2023

This study aims to identify and determine the phylogenetic position of two bacterial isolates (F0031 and F0033), isolated from culture media of Rotifer Brachionus plicatilis sp. complex. Genomic DNA of the bacteria was extracted using Qiaprep Miniprep Kit and the 16S rRNA gene was amplified using primer pairs 8F (5'-AGAGTTTGATCCTGGCTCAG-3') and 1492R (5'-ACCTTGTTACGACTT-3'). The sequences were analyzed using Geneious Prime ver. 2020 and bacterial identification was performed using the Basic Local Alignment Tool (BLAST) method.  Phylogenetic analysis was conducted using MEGA X, where the phylogenetic tree was constructed using the Maximum Likelihood method, and evaluated using the Bootstrap method.  Results of this study showed that both bacterial isolates (F0031 and F0033) belong to different genera, namely Bacillus (F0031) and Mesobacillus (F0033). Bacterial isolate F0031 had the closest similarity and was located at the same phylogenetic branch as B. cereus, while isolate F0033 was with M. jeotgali.
Keywords: phylogeny, molecular, bacteria, bacillus, mesobaccilus, rotifera, diet.
Abstrak
Penelitian ini bertujuan untuk mengidentifikasi dan menentukan posisi filogeni dua isolat bakteri (F0031 dan F0033) yang diisolasi dari media kultur rotifer Brachionus plicatili sp. complex.  DNA genom dari isolat bakteri diekstrak menggunakan Kit Qiaprep Miniprep dan gen 16S rRNA diamplifikasi menggunakan pasangan primer 8F (5'-AGAGTTTGATCCTGGCTCAG-3') dan 1492R (5'-ACCTTGTTACGACTT-3').  Hasil sekuens dianalisis menggunakan Sequence scanner ver. 2.0 dan analisis sekuens dilakukan menggunakan Geneious Prime ver. 2020.  Identifikasi isolat bakteri dilakukan dengan metode BLAST (Basic Local Alignment Tools) dan analisis filogenetik dilakukan dengan menggunakan MEGA X, dimana konstruksi filogeni menggunakan metode Maximum Likelihood yang dievaluasi dengan metode Bootstrap.
Hasil penelitian menunjukan bahwa kedua isolat bakteri (F0031 dan F0033) merupakan isolat bakteri yang berasal dari genus berbeda, yaitu genus Bacillus (F0031) dan genus Mesobacillus (F0033).  Isolat bakteri F0031 memiliki kesamaan terdekat dan berada pada posisi percabagan filogenetik yang sama dengan B. cereus sedangkan Isolat F0033 dengan M. jeotgali
Kata kunci: Filogeni, molekuler, bakteri, bacillus, mesobaccilus, rotifer, pakan
Seagrass Community Structure at Ratatotok Beach, Southeast Minahasa Regency
Authors: Purba Dhebby , Wagey Billy , Luasunaung Alfret , Manembu Indri , Sumilat Deiske , Mantiri Rose
Published: December 2023

The purpose of this research is to know about the type of seagrass, the community structure of seagrass based on the density of type, the density of the relatively, type of frequency, frequency relatively, type of cover, cover relatively, diversity index, dominance and parameter index in surrounding water environment of seagrass at Ratatotok beach. The result of this research is identifying 4 species, namely; Thalassia hemprichii, Enhalus acoroides, Syringodium isoetifolium dan Halodule pinifolia. The value of density is 39 indv/m2, the value type of frequency is 7.9, the value type of cover is 39.15, importance value index had 159.04%. Thalassia hemprichii, diversity index is “medium” with an average value (H’) of 2.63 and a higher importance index with an average value of C of 0.82. Surrounding waters at Ratototok Beach got a “medium” value of seagrass cover value is 39%. Environmental parameters in surrounding waters at Ratatotok beach had a value within; Temperature 31.95 0C, salinity 29.79o/oo, pH 7.62, DO 5.60 mg/L and the type of substrate found is sandy, sandy mud and coral fragments.
Keywords: Seagrass, Community structure, Ratatotok beach.
Abstrak
Tujuan dilakukan penelitian ini yaitu mengetahui jenis lamun, struktur komuntas lamun berdasarkan kepadatan jenis, kepadatan relatif, frekuensi jenis, frekuensi relatif, penutupan jenis, penutupan relatif, indeks keanekaragaman, indeks dominansi dan parameter lingkungan perairan padang lamun yang berada di sekitar Pantai Ratatotok. Hasil yang di peroleh dari penelitian ini teridentifikasi 4 spesies, yaitu: Thalassia hemprichii, Enhalus acoroides, Syringodium isoetifolium dan Halodule pinifolia. Dengan nilai kepadatan 39 ind/m2, frekuensi jenis 7,9, penutupan jenis 39,15, Indeks nilai penting (INP) diperoleh nilai 159,04 %,  pada Thalassia hemprichii, Indeks keanekaragaman “sedang” dengan nilai rata-rata (H’) 2,63 dan indeks dominansi tinggi dengan nilai rata-rata C 0,82. Berdasarkan kategori penutupan lamun yang terdapat di sekitar Perairan Ratatotok dikategorikan “sedang” dengan nilai penutupan 39%. Parameter lingkungan antara lain: suhu 31,95 0C, salinitas 29,79 o/oo, pH 7,62, DO 5,60 mg/l dan jenis substrat yang di temukan adalah berpasir, pasir berlumpur dan pecahan karang.
Kata kunci : Lamun, Struktur Komunitas, Pantai Ratatotok
Community Structure of Macroalgaes in Coastal Waters of Molas, Bunaken District, Manado City
Authors: Hadath Deandra Starsha Bianca , Kepel Rene Charles , Rangan Jety Kornela , Sangari Joudy R.R. , Mantiri Rose O.S.E , Lasabuda Ridwan
Published: December 2023

As a marine biological resource macroalgae grow and develop naturally in the waters of Manado Bay, especially in the coastal waters of Molas. This study aims to analyze the community structure of macroalgae in the coastal waters of Molas, Bunaken District, Manado City. Data retrieval in the field using the Line Transect method with quadratic sampling technique performed at the lowest ebb analysis of the data required to obtain an overview of the macroalgae community structure and performed several formulas. Found 6 species consisting of 3 red algae (Rhodophyceae) G. edulis, G. salicornia, Gracilaria sp., 1 brown alga (Phaeophyceae) Padina australis, and 2 green algae (Ulvophyceae) Halimeda macroloba and Chaetomorpha crassa.
Keywords: macroalgae, community structure, coastal waters, Molas, Manado
Abstrak
Sebagai sumberdaya hayati laut makroalga tumbuh dan berkembang secara alamiah di Perairan Teluk Manado, khususnya di pantai Molas. Penelitian ini bertujuan untuk menganalisis struktur komunitas makroalga di perairan pantai Molas Kecamatan Bunaken Kota Manado. Pengambilan data di lapangan menggunakan metode Line Transect dengan teknik sampling kuadrat dilakukan pada surut terendah Analisis data yang diperlukan untuk mendapatkan gambaran struktur komunitas makroalga dan dilakukan beberapa formula. Ditemukan 6 spesies yang terdiri dari 3 alga merah (Rhodophyceae) yaitu G. edulis, G. salicornia, Gracilaria sp., 1 alga coklat (Phaeophyceae) yaitu Padina australis, dan 2 alga hijau (Ulvophyceae) yaitu Halimeda macroloba dan Chaetomorpha crassa.
Kata kunci: makroalga, struktur komunitas, perairan pantai, Molas, Manado
Seagrass Community in the Coastal Waters of Sapa Village, Tenga District, South Minahasa Regency, North Sulawesi Province
Authors: Runturambi Melinda , Menajang Febry S. I. , Kondoy Khristin I.F. , Rembet Unstain N. W. J. , Manginsela Fransine B. , Kambey Alex D.
Published: December 2023

Sapa Village, Tenga District, South Minahasa Regency, North Sulawesi Province has a seagrass meadow ecosystem, but there is still a lack of information about the seagrass community in the waters of Sapa Village, which is the reason for researching the presence of seagrass in these waters. With the aim of knowing the types of seagrass, environmental conditions, species density, relative density, domination index, and species diversity index. Based on the results of observations at the location, it showed a temperature of 30OC, salinity of 30‰, pH 8, and sandy substrate and coral rubble. The results of the identification there are 4 types of seagrass namely Thalassia hemprichii, Syringodium isoetifolium, Cymodocea rotundata, and Halodule uninervis. The type with the highest number of individuals vizThalassia hemprichii with a total of 694 individuals, Halodule uninervis 557 individuals, Cymodocea rotundata358 individuals andSyringodium isoetifolium 324 individuals. Density index type (10,80 – 23,13 individuals/m2), relative density (16.76 - 35.90%) dominance index D = 0.32, and diversity H = 1.33.
Keywords: seagrass, sapa village, community structure
Abstrak
Desa Sapa Kecamatan Tenga Kabupaten Minahasa Selatan Provinsi  Sulawesi Utara memiliki ekosistem padang lamun namun masih kurangnya informasi mengenai komunitas lamun di perairan Desa Sapa ini menjadi alasan untuk meneliti tentang keberadaan lamun di perairan tersebut. Dengan tujuan untuk mengetahui jenis-jenis lamun, kondisi lingkungan, Kepadatan spesies, Kepadatan Relatif, Indeks Dominasi, dan  Indeks Keanekaragaman Spesies. Berdasarkan hasil pengamatan di lokasi menunjukan suhu 30oC, salinitas 30‰, pH 8 dan substrat berpasir serta pecahan karang. Hasil identifikasi terdapat 4 jenis lamun yaitu Thalassia hemprichii, Syringodium isoetifolium, Cymodocea rotundata, dan Halodule uninervis. Jenis dengan jumlah individu terbanyak yaitu Thalassia hemprichii dengan jumlah  694 individu, Halodule uninervis 557 individu, Cymodocea rotundata 358 individu dan Syringodium isoetifolium 324 individu. Indeks kepadatan jenis (10,80 – 23,13 individu/m2), kepadatan relatif (16,76 - 35,90%) indeks dominasi D=0,32 dan keanekaragaman H= 1,33.
Kata kunci: lamun, desa sapa, struktur komunitas
Zoochemical Analysis and Antibacterial Potential of Starfish, Linckia laevigata Extract
Authors: Mengko Christian , Lintang Rosita A.J , Losung Fitje , Angkouw Esther Dellayani , Lasut Markus T.
Published: December 2023

Starfish is one of the marine biota that produces bioactive compounds and has biological activity. The aims of this study were to determine the content of bioactive compounds and to test the antibacterial activity of the extract of the starfish Linckia laevigata against Staphylococcus aureus and Escherichia coli bacteria. Determination of the content of bioactive compounds was carried out by qualitative zoochemical analysis while the antibacterial test used the disc diffusion method. The results showed that the extract of the starfish L. laevigata has bioactive compounds from the alkaloid, triterpenoid, tannin, flavonoid, phenolic, and saponin groups. Inhibitory activity against S. aureus and E.coli based on the inhibition zone formed showed that L. laevigata starfish extract produced low antibacterial activity
Keywords : Starfish (Linckia laevigata), Zoochemistry, Antibacterial, Disc diffusion
Abstrak
Bintang laut merupakan salah satu biota laut yang memproduksi senyawa bioaktif dan memiliki aktivitas biologis.Tujuan penelitian ini adalah mengetahui kandungan senyawa bioaktif dan melakukan pengujian aktivitas antibakteri dari ekstrak bintang laut Linckia laevigata terhadap bakteri Staphylococcus aureus dan Escherichia coli. Penentuan kandungan senyawa bioaktif dilakukan dengan analisis zookimia kualitatif sedangkan pengujian antibakteri menggunakan metode difusi cakram. Hasil penelitian memperlihatkan bahwa ekstrak bintang laut L. laevigata memiliki senyawa bioaktif dari golongan alkaloid, triterpenoid, tanin, flavonoid, fenolik, dan saponin. Aktivitas penghambatan terhadap S. aureus dan E.coli berdasarkan zona hambat yang terbentuk menunjukkan bahwa ekstrak bintang laut L. laevigata menghasilkan aktivitas antibakteri yang rendah
Kata kunci :Bintang Laut Linckia laevigata, Zookimia, Antibakteri, Difusi cakram.
Aquatic Pollution Study Based on Analysis of Mollusk Diversity as a Bioindicator
Authors: Lohoo Anneke V. , Manu Gaspar , Mantiri Rose O.S.E.
Published: December 2023

This research aims to determine the condition of coastal water quality at Sam Ratulangi University's Marine Field Station by looking at the diversity of mollusks and the physical and chemical parameters of the waters as supporting parameters. The method used to determine the research location was the Quadratic Transect method, while to determine the sampling point the random sampling method was used, namely selecting sampling locations randomly based on areas with dominant activities. The mollusks taken are mollusks that are still alive and can be seen attached, both on the surface of the substrate and inside the substrate. Observations of the place and substrate where the individual attached/immersed themselves were carried out by measuring the water quality, where the temperature was 300C, salinity 28%0, and pH 8). The identification results obtained were 29 types. In the final step after the sample has been identified, all data obtained will be analyzed to obtain results from the research carried out. This research is expected to provide information about the condition of water pollution at Sam Ratulangi University's Marine Field Station in determining management policies and preserving the aquatic ecosystem.
Keywords: Bioindicators, Molluscs, Diversity, Pollution.
Abstrak
Penelitian ini bertujuan untuk mengetahui kondisi kualitas perairan pesisir Marine Field Station Universitas Sam Ratulangi dengan melihat keanekaragaman moluska serta parameter fisika kimia perairan sebagai parameter pendukung.  Metode yang digunakan dalam menentukan lokasi penelitian adalah metode Transek Kuadrat, sedangkan untuk menentukan titik pengambilan sampel digunakan metode random sampling, yaitu pemilihan lokasi pengambilan sampel secara acak berdasarkan kawasan dengan kegiatan yang dominan. Moluska yang diambil adalah Moluska dalam keadaan masih hidup yang terlihat menempel, baik di permukaan substrat maupun di dalam subtrat. Pengamatan tentang tempat maupun substrat dimana individu tersebut menempel/membenamkan diri dilakukan pengukuran kualitas air, di mana suhu 300C, salinitas 28%0 dan pH 8). Hasil  indentifikasi diperoleh sebanyak 29 jenis. Langkah terakhir setelah sampel diidentifikasi, semua data yang diperoleh akan dianalisis untuk memperoleh hasil dari penelitian yang dilakukan. Penelitian ini diharapkan sebagai informasi tentang kondisi pencemaran perairan Marine Field Station Universitas Sam Ratulangi dalam penentuan kebijakan pengelolaan serta menjaga kelestarian ekosistem perairan.
Kata kunci: Bioindikator, Moluska, Keanekaragaman, Pencemaran.
Identification Of The Condition Of The Ship Wreck As A Diving Tourism Object In The Waters Of "Tawara" Bunaken National Park, North Sulawesi Province
Authors: Karauwan Maykel , Gumolili Youdy
Published: December 2023

The coral reef ecosystem is a place to live, a place to breed, and even a place to find food for various kinds of marine biota, this is what makes this ecosystem a beautiful attraction as a tourist destination. In general, the waters of Bunaken Island, which are included in the Bunaken National Park Area, are one of the world's tourist destinations, which present coral reefs as a charm that can be enjoyed for their beauty and high level of biota diversity. The objectives of this research are: To identify the condition of existing shipwrecks; Identify corals attached to shipwrecks; and analyze the Suitability of diving tourism. The coral type Pocillopora verrucosa was found with a total of 45 colonies with an average growth of 7 cm, Ascidian Polycarpa Aurata the number of colonies found was 18 with an average growth of 3, Ascidian Didemnum mole the highest number of colonies found was 97 colonies with an average growth of 2 cm, while Cyphastrea microphthalmia number of colonies was 8 and the average growth was 3 cm. Analysis of tourism suitability for this location for diving tourism with an IKW value of 2.25, which based on the score means it is in the "suitable" category.
Keywords: Tourism, Ship, Shipwreck, Bunaken, Coral
Abstrak
Ekosistem terumbu karang sebagai tempat hidup, tempat berkembang biak, bahkan tempat mencari makan berbagai macam biota laut, hal inilah yang menjadikan ekosistem ini memiliki daya tarik yang indah untuk dijadikan destinasi wisata. Secara umum perairan Pulau Bunaken yang masuk dalam Kawasan Taman Nasional Bunaken, adalah salah Destinasi wisata Dunia, yang menghadirkan Terumbu karang sebagai pesona yang dinikmati keindahannya dan tingkat keanekaragaman biota yang tinggi. Adupun tujuan dari penelitian ini yaitu : Mengidentifikasi kondisi kapal karam yang ada; Mengidentifikasi karang yang menempel pada kapal karam;  Menganalisis Kesesuaian wisata selam. Ditemukan karang berjenis Pocillopora verrucosa dengan jumlah koloni 45 dengan pertumbuhan rata-rata 7 cm,  Ascidian Polycarpa Aurata  jumlah koloni yang ditemukan 18 pertumbuhan rata-rata 3, Ascidian Didemnum mole jumlah koloni yang terbanyak ditemukan 97 koloni dengan pertumbuhan rata-rata 2 cm, sedangkan Cyphastrea microphthalma jumlah koloni 8 dan pertumbuhan rata-rata 3 cm. Ananlisis kesesuaian wisata untuk lokasi tersebut untuk wisata selam dengan nilai IKW, 2,25 yang berdasarkan skor artinya dalam kategori “sesuai”.
Kata Kunci : Wisata, Kapal,  Karam, Bunaken, Karang