bluuebunny/crossref_metadata_2025 huggingface dataset:
Weight Loss After Stroke Through an Intensive Lifestyle Intervention (Group Lifestyle Balance-Cerebrovascular Accident): Protocol for a Randomized Controlled Trial
Authors: Driver Simon , Swank Chad , Froehlich-Grobe Katherine , McShan Evan , Calhoun Stephanie , Bennett Monica
Published: July 2019

Background

Weight gain can be a consequence of stroke, or cerebrovascular accident (CVA), because of impaired mobility, behavioral and emotional disorders, and sensory losses. Weight gain increases the patient’s risk of recurrent stroke and chronic diseases, such as diabetes, metabolic syndrome, and pulmonary and heart disease. Approaches to weight loss in this population are lacking, although necessary because of the unique physiological and cognitive needs of persons after a stroke. Evidence shows that intensive behavioral therapy interventions that address both physical activity and diet offer the greatest potential for weight loss. The Group Lifestyle Balance (GLB) intervention is a 12-month, evidence-based weight loss program that has been used extensively with the general population; this program was modified to meet the needs of people who have had a stroke (GLB-CVA).

Objective

This randomized controlled trial (RCT) aims to examine the efficacy of the GLB-CVA on weight and secondary outcomes, compared with that of a waitlist control group.

Methods

This RCT will enroll and randomize 64 patients over an 18-month period.

Results

Currently, 51 people are waitlisted, with 23 out of 51 screened and 16 out of 23 eligible.

Conclusions

It is anticipated that the findings from this RCT will contribute to the evidence base regarding weight loss strategies for people living with stroke.

Clinical Trial

ClinicalTrials.gov NCT03873467; https://clinicaltrials.gov/ct2/show/NCT03873467
Characterizing Artificial Intelligence Applications in Cancer Research: A Latent Dirichlet Allocation Analysis
Authors: Tran Bach Xuan , Latkin Carl A , Sharafeldin Noha , Nguyen Katherina , Vu Giang Thu , Tam Wilson W S , Cheung Ngai-Man , Nguyen Huong Lan Thi , Ho Cyrus S H , Ho Roger C M
Published: July 2019

Background

Artificial intelligence (AI)–based therapeutics, devices, and systems are vital innovations in cancer control; particularly, they allow for diagnosis, screening, precise estimation of survival, informing therapy selection, and scaling up treatment services in a timely manner.

Objective

The aim of this study was to analyze the global trends, patterns, and development of interdisciplinary landscapes in AI and cancer research.

Methods

An exploratory factor analysis was conducted to identify research domains emerging from abstract contents. The Jaccard similarity index was utilized to identify the most frequently co-occurring terms. Latent Dirichlet Allocation was used for classifying papers into corresponding topics.

Results

From 1991 to 2018, the number of studies examining the application of AI in cancer care has grown to 3555 papers covering therapeutics, capacities, and factors associated with outcomes. Topics with the highest volume of publications include (1) machine learning, (2) comparative effectiveness evaluation of AI-assisted medical therapies, and (3) AI-based prediction. Noticeably, this classification has revealed topics examining the incremental effectiveness of AI applications, the quality of life, and functioning of patients receiving these innovations. The growing research productivity and expansion of multidisciplinary approaches are largely driven by machine learning, artificial neural networks, and AI in various clinical practices.

Conclusions

The research landscapes show that the development of AI in cancer care is focused on not only improving prediction in cancer screening and AI-assisted therapeutics but also on improving other corresponding areas such as precision and personalized medicine and patient-reported outcomes.
Development of a Mobile Phone App for Measuring Striking Response Time in Combat Sports: Cross-Sectional Validation Study
Authors: Coswig Victor , Sant' Ana Jader , Coelho Maicon Nascimento , Pereira Moro Antonio Renato , Diefenthaeler Fernando
Published: July 2019

Background

TReaction is a mobile app developed to determine strike response time at low cost and with easy application in combat sports. However, the validity and accuracy of the response time obtained by the TReaction app has not yet been evaluated.

Objective

This study aimed to test the validity and reliability of the TReaction app in measuring motor response time in combat sports.

Methods

A total of two athletes performed 59 strikes to assess the response time upon visual stimulus using the TReaction app simultaneously with a high-speed camera. Accuracy of the measure was verified using a computer simulator programmed to discharge visual stimuli and obtain the response time. Pearson correlation, Student t test for dependent samples, and the Bland-Altman analysis were performed. Accuracy was verified using the intraclass correlation coefficient. Effect size (g) and the typical error of measurement (TEM) were calculated. The significance level was set at P<.05.

Results

No significant difference (P=.56) was found between both systems. The methods presented a very strong correlation (r=0.993). The magnitude of differences was trivial (g<0.25), and TEM was 1.4%. These findings indicate a high accuracy between the computer screen and the mobile app measures to determine the beginning of the task and the response time.

Conclusions

Our findings suggest that the TReaction app is a valid tool to evaluate the response time in combat sports athletes.
German Mobile Apps in Rheumatology: Review and Analysis Using the Mobile Application Rating Scale (MARS)
Authors: Knitza Johannes , Tascilar Koray , Messner Eva-Maria , Meyer Marco , Vossen Diana , Pulla Almut , Bosch Philipp , Kittler Julia , Kleyer Arnd , Sewerin Philipp , Mucke Johanna , Haase Isabell , Simon David , Krusche Martin
Published: July 2019

Background

Chronic rheumatic diseases need long-term treatment and professional supervision. Mobile apps promise to improve the lives of patients and physicians. In routine practice, however, rheumatology apps are largely unknown and little is known about their quality and safety.

Objective

The aim of this study was to provide an overview of mobile rheumatology apps currently available in German app stores, evaluate app quality using the Mobile Application Rating Scale (MARS), and compile brief, ready-to-use descriptions for patients and rheumatologists.

Methods

The German App Store and Google Play store were systematically searched to identify German rheumatology mobile apps for patient and physician use. MARS was used to independently assess app quality by 8 physicians, 4 using Android and 4 using iOS smartphones. Apps were randomly assigned so that 4 apps were rated by all raters and the remaining apps were rated by two Android and two iOS users. Furthermore, brief app descriptions including app developers, app categories, and features were compiled to inform potential users and developers.

Results

In total, 128 and 63 apps were identified in the German Google Play and App Store, respectively. After removing duplicates and only including apps that were available in both stores, 28 apps remained. Sixteen apps met the inclusion criteria, which were (1) German language, (2) availability in both app stores, (3) targeting patients or physicians as users, and (4) clearly including rheumatology or rheumatic diseases as subject matter. Exclusion criteria were (1) congress apps and (2) company apps with advertisements. Nine apps addressed patients and 7 apps addressed physicians. No clinical studies to support the effectiveness and safety of apps could be found. Pharmaceutical companies were the main developers of two apps. Rheuma Auszeit was the only app mainly developed by a patient organization. This app had the highest overall MARS score (4.19/5). Three out of 9 patient apps featured validated questionnaires. The median overall MARS score was 3.85/5, ranging from 2.81/5 to 4.19/5. One patient-targeted and one physician-targeted app had MARS scores >4/5. No significant rater gender or platform (iOS/Android) differences could be observed. The overall correlation between app store ratings and MARS scores was low and inconsistent between platforms.

Conclusions

To our knowledge, this is the first study that systematically identified and evaluated mobile apps in rheumatology for patients and physicians available in German app stores. We found a lack of supporting clinical studies, use of validated questionnaires, and involvement of academic developers. Overall app quality was heterogeneous. To create high-quality apps, closer cooperation led by patients and physicians is vital.
Electronic Health Literacy in Swiss-German Parents: Cross-Sectional Study of eHealth Literacy Scale Unidimensionality (Preprint)
Authors: Juvalta Sibylle , Kerry Matthew J , Jaks Rebecca , Baumann Isabel , Dratva Julia
Published: July 2019

BACKGROUND

Parents often use digital media to search for information related to their children’s health. As the quantity and quality of digital sources meant specifically for parents expand, parents’ digital health literacy is increasingly important to process the information they retrieve. One of the earliest developed and widely used instruments to assess digital health literacy is the self-reported eHealth Literacy Scale (eHEALS). However, the eHEALS has not been psychometrically validated in a sample of parents. Given the inconsistency of the eHEALS underlying factor structure across previous reports, it is particularly important for validation to occur.

OBJECTIVE

This study aimed to determine the factor structure of the German eHEALS measure in a sample of parents by adopting classic and modern psychometric approaches. In particular, this study sought to identify the eHEALS validity as a unidimensional index as well as the viability for potential subscales.

METHODS

A cross-sectional design was used across two purposive sampling frames: online and paper administrations. Responses were collected between January 2018 and May 2018 from 703 Swiss-German parents. In addition to determining the sampling characteristics, we conducted exploratory factor analysis of the eHEALS by considering its ordinal structure using polychoric correlations. This analysis was performed separately for online–based and paper–based responses to examine the general factor strength of the eHEALS as a unidimensional index. Furthermore, item response theory (IRT) analyses were conducted by fitting eHEALS to a bifactor model to further inspect its unidimensionality and subscale viability.

RESULTS

Parents in both samples were predominantly mothers (622/703, 88.5%), highly educated (538/703, 76.9%), of Swiss nationality (489/703, 71.8%), and living with a partner (692/703, 98.4%). Factor analyses of the eHEALS indicated the presence of a strong general factor across both paper and online samples, and the Wilcoxon rank-sum test indicated that the eHEALS total sum score was not significantly different between the paper and online samples (P=.12). Finally, the IRT analyses indicated negligible multidimensionality, insufficient subscale reliability after accounting for the eHEALS general factor, and a reduced subset of items that could serve as a unidimensional index of the eHEALS across the paper and online samples.

CONCLUSIONS

The German eHEALS evidenced good psychometric properties in a parent-specific study sample. Factor analyses indicated a strong general factor across purposively distinct sample frames (online and paper). IRT analyses validated the eHEALS as a unidimensional index while failing to find support for subscale usage.
PASSIVE VIBRATION SUPPRESSION OF STRUCTURES IN THE VICINITY OF NATURAL FREQUENCIES USING PIEZOEFFECT
Authors: Rogacheva Nelly
Published: July 2019

The proposed method of passive vibration suppression of structures is based on the use of the piezoe­lectric effect, which consists in the ability of the piezoelectric material to convert electrical energy into mechani­cal energy, and conversely. As it is known if the frequency of forced vibrations tends to the resonant frequency, all the desired quantities (forcers, moments, displacements and deformations) grow indefinitely. A new idea is that as we approach the resonant frequency, we change the electrical conditions on the electrodes of piezoelectric layers, thereby obtaining a different boundary value problem and a different spectrum of natural frequencies. Thus, we manage to get away from the resonant vibrations of the structure. Using the example of a laminated beam with elastic and piezoelectric layers the possibility of damping vibrations caused by mechanical load is studied. In this paper, a mathematically based model is used to solve the problem in question. The calculations are performed and the results are presented in the form of graphs. It is shown that forcers, moments, displace­ments and deformations of beam in the vicinity of the natural frequency can be significantly reduced by as a re­sult of changes in the electrical conditions on the electrodes of the piezoelectric layers.
Modeling Stock Market Returns of BRICS with a Markov-Switching Dynamic Regression Model
Authors: Xaba, Diteboho , Moroke, Ntebogang Dinah , Rapoo Ishmael
Published: July 2019

This article adopted a Markov-switching dynamic regression (MS-DR) model to estimate appropriate models for BRICS countries. The preliminary analysis was done using data from 01/1997 to 01/2017 and to study the movement of 5 stock market returns series. The study further determined if stock market returns exhibit nonlinear relationship or not. The purpose of the study is to measure the switch in returns between two regimes for the five stock market returns, and, secondly, to measure the duration of each regime for all the stock market returns under examination. The results proved the MS-DR model to be useful, with the best fit, to evaluate the characteristics of BRICS countries.
Fostering a Culture of Performance Management in Municipalities: Perceptions of Municipal M & E Practitioners in Kwazulu Natal
Authors: Kariuki, Paul , Reddy Purshottama
Published: July 2019

Creating a culture that considers monitoring and evaluation as an essential tool for performance improvement is not an easy task. Some employees are likely to resist due to a lack of awareness of the value of monitoring and evaluation while others could do so due to fear of the accountability and transparency implicit in the implementation of such a system. Nonetheless, it is imperative that performance management is prioritised in municipal development interventions. This article is based on a doctoral study that used qualitative participatory research techniques to gather data from evaluation practitionersâ€™ municipalities in KwaZulu-Natal. It presents these practitionersâ€™ perspectives on fostering a culture of performance management in local government. The article expounds on their lived experiences that reflect on how performance management could facilitate an effective monitoring and evaluation culture within this sector. The study found that monitoring and evaluation practitioners were sloppy towards their responsibilities and this contributed to poor tracking of the impact of municipal interventions, thereby compromising their abilities to fulfil their constitutional mandates. Furthermore, the study found that there is no political will to enforce performance in most municipalities. The implication of this study is that a culture of performance management must be enforced by government as a critical institutional norm towards achieving accountable, effective, efficient and responsive developmental local government. Municipalities must harness the necessary political will for this to become a reality in municipalities towards promoting good governance in local government supported by a culture of performance.
Türkiye’deki Sel ve Taşkın Yönetmelikleri Üzerine Bir Değerlendirme: Farklı Ülkeler ile Karşılaştırma ve Yasal Boşluk Analizi
Authors: Öztürk Serkan , Uzuntaş Ömer
Published: July 2019

Bu çalışmada, Türkiye’deki sel ve taşkın mevzuatları
ulusal ve uluslararası boyutta değerlendirilmiş, Amerika Birleşik Devletleri
(ABD), Kanada, İtalya ve Japonya gibi farklı dünya ülkelerine ait
yönetmeliklerle karşılaştırılmıştır. Yapılan değerlendirme sonucunda,
Türkiye’deki mevcut sel ve taşkın mevzuatlarında birçok eksiklik/açıklık
saptanmış ve bu eksikliklere bağlı olarak aynı bölgede aynı yılda ya da farklı dönemlerde
birçok sel ve taşkın meydana gelmiştir. Bunların başlıca nedenini,
mevzuatlardaki açıklıklardan yararlanılarak yapılan yanlış imar düzenlemeleri
veya yanlış mühendislik çalışmaları oluşturmaktadır. Ayrıca, Türkiye’de, diğer
dünya ülkelerinde olduğu gibi afetin türüne göre etkin bir sigorta sisteminin
bulunmayışı yaşanan bütün olumsuz durumların başlıca nedeni olarak verilebilir.
Sel ve taşkın mevzuatının geniş ve karmaşık yapısından dolayı, alınacak uygun
yasal tedbirler ve mühendislik önlemleri, hem oluşabilecek can ve mal
kayıplarının önüne geçecek hem de ekonomik olarak oluşabilecek zararları
azaltacak veya ortadan kaldıracaktır. Dolayısıyla, bu durum ülke ekonomisine
olumlu yönde katkı sağlayacaktır.
Optimasi Formulasi Esens Sheet Mask Kombinasi Ekstrak Spirulina platensis dan Nanopartikel Bentonit dengan Metode Simplex Lattice Design
Authors: Wikantyasning Erindyah Retno , Nurhakimah Ulil Fikri , Sula Ramadhani Dwi , Astuti Kartika Fidi
Published: July 2019

Spirulina platensis contained phycocyanin that has the potential for antioxidant activity. Bentonite contains various minerals that can absorb water and was known having ability for scavenging of free radicals. The purpose of this study was to obtain the optimum formulae of sheet mask essence, containing combination of Spirulina platensis extract and bentonite nanoparticles and evaluated the antioxidant activity using DPPH (2,2-diphenyl-1-pikrihidrazil) assay. Bentonite nanoparticles was prepared by High Energy Milling (HEM) method and characterized using Particle Size Analyzer (PSA). The results of the nanoparticles characterization was 152,8±0,69 nm for the particle size and 0.106±0.03 for PI value. Physical stability tests showed that the formula was homogenous, viscosity between 0.7-1.1 dPas, and pH between 5-6.5. The IC50 value of Spirulina platensis extract was 256.46 ppm with AAI category was medium. The antioxidant test of this fomula that contain Spirulina platensis extract and bentonite nanoparticles did not show any potential antioxidant activity. The concentrations of PEG 400 and Tween 80 were used to formulate the optimum formula were 4.29% w/w and 6.71% w/w.
DAYA RACUN EKSTRAK UMBI GADUNG (Discorea hispida Dennst) TERHADAP HAMA KEONG EMAS (Pomacea sp.) DAN IKAN LELE (Clarias sp.) DI RUMAH KACA
Authors: Ferinda Melshella , Solikhin Solikhin , Indriyati Indriyati , Susilo FX
Published: July 2019

Penelitian ini bertujuan untuk mengetahui daya racun ekstrak umbi gadung (Discorea hispida Dennst) terhadap hama keong emas (Pomacea sp.) dan ikan lele (Clarias sp.). Penelitian ini dilakukan di Rumah Kaca Balai Proteksi Tanaman Pangan dan Hortikultura, Gadingrejo, Kabupaten Pringsewu pada bulan Maret sampai Mei 2016. Penelitian disusun dalam rancangan kelompok teracak sempurna (RKTS), dalam percobaan terhadap keong emas dengan 3 ulangan. Sebagai perlakuan adalah 7 taraf ekstrak umbi gadung yaitu P0 (0 g/l), P1 (5 g/l), P2 (10 g/l), P3 (15 g/l), P4 (20 g/l), P5 (25g/l) dan P6 (30 g/l). Percobaan terhadap ikan lele dengan 4 ulangan. Percobaan perlakuan adalah 5 taraf ekstrak umbi gadung yaitu P0 (0 g/l), P1 (2,5 g/l), P2 (5 g/l), P3 (7,5 g/l) dan P4 (10 g/l).Data diolah dan disajikan dalam bentuk tabel. Data dari uji daya racun tersebut dianalisis dengananalisis probit menggunakan SPSS version 23 for windows. Rata-rata daya racun (LT-50) dan (LC-50) ditentukan dengan taraf nyata 5%. Hasil penelitian menunjukkan bahwa ekstrak umbi gadung bersifat lebih toksik terhadap ikan lele dibandingkan keong emas, hal ini ditunjukkan oleh besarnya LT-50 dan LC-50. Nilai LT-50 ekstrak umbi gadung terhadap keong emas pada konsentrasi 30 g/l (2,5 hari) dan pada konsentrasi 5 g/l (13,9 hari), sedangkan nilai LC-50nya adalah (0,024 g/l). Nilai LT-50 ekstrak umbi gadung terhadap ikan lele pada konsentrasi 10 g/l (1,9 hari) dan pada konsentrasi 2,5 g/l (4,8 hari), sedangkan nilai LC-50nya adalah (0,005 g/l).
DAYA MENAHAN AIR DAN INFILTRASI PADA PERTANAMAN KEDELAI (Glycine max (L.) Merr.) DI LAHAN BPTP TEGINENENG
Authors: Wira Bisana I Putu , Afandi Afandi , Wiharso Didin , Manik Karden E. S.
Published: July 2019

Infiltrasi dan daya menahan air merupakan salah satu parameter untuk mengetahui tingkat kesuburan tanah melalui pendekatan sifat fisik tanah. Penelitian ini bertujuan untuk mengetahui pengaruh pemberian gipsum dan bahan organik terhadap laju infiltrasi dan daya menahan air pada pertanaman kedelai di lahan BPTP Tegineneng. Penelitian dilaksanakan pada bulan Agustus 2014 hingga April 2015 Lahan BPTP Unit Percobaan Tegineneng, Lampung Selatan dan Laboratorium Ilmu Tanah Fakultas Pertanian Universitas Lampung. Pada penelitian ini terdapat 4 perlakuan dan 3 ulangan. Percobaan dilakukan dengan Rancangan Acak Kelompok (RAK), dan ntuk infiltrasi penelitian ini menggunakan metode singgel ring. Laju infiltrasi paling cepat pada irigasi 0,5 (penyiraman 3 hari sekali) terdapat pada perlakuan G 1 (gipsum 130 kg/ha) dengan kecepatan laju infiltrasi awal (5 menit ke 1) 324 mm/jam dan titik konstan (5 menit ke 5) 168 19,60 km/jam sedangkan pada irigasi 0,75 (penyiraman 6 hari sekali) terdapat pada perlakuan B 1 (bahan organik 5 ton/ha) dengan laju infiltrasi awal (5 menit ke 1) 200 mm/ jam dan laju infiltrasi konstan (5 menit ke 5) 72 mm/jam. Penambahan bahan organik pada penelitian ini meningkatkan daya menahan air tanah
PENINGKATAN PRODUKTIVITAS TANAMAN PADI SAWAH IRIGASI TERINTEGRASI POPULASI ITIK
Authors: Sumini Sumini , Holidi Holidi , Widiyanto Widiyanto
Published: July 2019

Penelitian ini bertujuan untuk mengetahui peningkatan produktivitas tanaman padi sawah irigasi dengan integrasi populasi itik. Penelitian dilaksanakan di Kelurahan Ekamarga Kecamatan Lubuk Linggau Selatan II Kota Lubuk Linggau dari Desember 2016 sampai Maret 2017. Metode penelitian yang digunakan adalah RancangaanAcak Kelompok (RAK). Setiap perlakuan populasi itik (P) diulang 4 kali yang terdiri dari : P0 = Tanpa Itik, P1 = 300 ekor/ha setara 1 ekor/petak, P2 = 600 ekor/ha setara 2ekor/petak, P3 = 900 ekor/ha setara 3 ekor/ petak, P4 = 1200 ekor/ha setara 4 ekor/petak, dan P5 = 1500 ekor/ha setara 5 ekor/petak. Hasil penelitian menunjukkan bahwa populasi itik berpengaruh nyata terhadap bobot bulir per malai , berpengaruh sangat nyata terhadap bobot 1000 bulir dan produksi per petak namun tidak berpengaruh nyata terhadap tinggi tanaman, jumlah anakan, dan jumlah anakan produktif. Populasi 2 ekor itik per petak (P2) atau setara dengan 600 ekorper hektar menghasilkan pertumbuhan dan produksi tertinggi.
PENGARUH BAKTERI Pseudomonas fluorescens dan Paenibacillus polymixa TERHADAP INTENSITAS PENYAKIT HAWAR UPIH SERTA PERTUMBUHAN TANAMAN JAGUNG HIBRIDA P27
Authors: Irwansyah Andi , Dirmawati Suskandini Ratih , Nurdin Muhammad , Ginting Cipta Ginting
Published: July 2019

Jagung merupakan tanaman pangan penting di Indonesia, salah satu kendala dalam budidaya tanaman jagung adalah serangan penyakit hawar upih yang disebabkan oleh cendawan Rhizoctonia solani. Penelitian ini bertujuan untuk mengetahui pengaruh bakteri Pseudomonas fluorescens dan Paenibacillus polymixa terhadap intensitas penyakit hawar upih dan pengaruh terhadap pertumbuhan tanaman jagung. Penelitian ini dilakukan pada bulan Juli 2017 sampai bulan Agustus 2017, di Desa Rantau Minyak, Kecamatan Candipuro, Kabupaten lampung selatan. Penelitian disusun dalam rancangan acak lengkap (RAL) terdiri atas lima perlakuan dan empat ulangan. Perlakuan terdiriatas (1) P0 kontrol berupa tanaman jagung yang tidak diberi perlakuan fungisida serta bakteri P. polymixa dan bakteri P. fluorescens (2) P1 perendaman benih pada suspensi bakteri P. polymixa pada benihjagung selama 12 jam (3) P2 perendaman benih pada suspensi bakteri P. fluorescens pada benih jagung, selama 12 jam (4) P3 perendaman benih jagung pada suspensi bakteri P. polymixa dan bakteri P. fluorescens, selama 12 jam dan, (5) P4 perendaman benih jagung pada fungisida propineb 70 % selama 12 jam. Data yang diperoleh kemudian dianalisis dengan menggunakan sidik ragam kemudian dilanjutkan dengan uji Beda Nyata Terkecil (BNT) pada taraf nyata 5%. Hasil dari penelitian ini menunjukan bahwa penggunaan bakteri Pseudomonasfluorescens dan Paenibacillus polymixa tunggal dan campuran tidak berpengaruh terhadap penurunan intensita spenyakit hawar upih. Perlakuan menggunakan bakteri P. fluorescens dan P. polymixa secara tunggal memberikan pengaruh terhadap tinggi tanaman dan hasil produksi jika dibandingkan dengan perlakuan control dan perlakuan menggunakan fungisida Propineb 70%
NEMATODA PARASIT TUMBUHAN DOMINAN PADA BIBIT DAN TANAMAN KOPI ROBUSTA (C. canephora var robusta) MUDA DI KABUPATEN TANGGAMUS, LAMPUNG
Authors: Swibawa I Gede , Yasin Nur , Aeny Titik Nur , Dewi Sari
Published: July 2019

Penelitian ini bertujuan untuk mengetahui genus nematoda parasit tumbuhan yang dominan pada bibit dan tanaman kopi robusta (C. canephora var robusta) muda di Kabupaten Tanggamus dan mengetahui kelimpahan nematoda parasit tumbuhan yang dominan dan tingkat kerusakan tanaman akibat serangan nematoda pada bibit dan tanaman kopi robusta (C. canephora var robusta) muda di Kabupaten Tanggamus. Pengambilan sampel dilakukan di kebun pembibitan kopi Edufarm PT Nestle Indonesia di Kecamatan Talang Padang dan kebun tanaman kopi robusta muda milik petani binaan PT Nestle Indonesia di Kecamatan Ulu Belu, Air Naningan, Sumberejo, dan Pulau Panggung. Proses laboratorium dilakukan di Laboratorium Ilmu Hama Tumbuhan Fakultas Pertanian Universitas Lampung. Penelitian ini dilaksanakan pada bulan Februari - Agustus 2017 menggunakan metode survai. Data komunitas nematoda dianalisis menggunakan Prominance Value (PV). Kelimpahan seluruh nematoda dari tanah dan akar, kelimpahan genus nematoda parasit tumbuhan yang dominan dari akar dan tanah dan intensitaskerusakan akar dianalisis ragam dan pemisahan nilai tengah diuji Beda Nyata Terkecil (BNT) pada taraf nyata 5%. Hasil penelitian menunjukkan bahwa ditemukan 38 genus nematoda yang terdiri dari 16 genus nematoda parasit tumbuhan dan 22 genus nematoda hidup bebas, lima genus nematoda parasit tumbuhan yang dominan yaitu Pratylenchus, Radopholus, Rotylenchulus, Helicotylenchus, dan Ditylenchus. Kelimpahan Pratylenchus pada bibit dan kopi robusta muda yaitu 13 – 190 individu/300 cc tanah dan 321 individu/10 g akar di kebun bibit. Intensitas kerusakan tanaman mutlak (keterjadian) dan kerusakan tanaman relatif (keparahan) bibit yaitu 27% dan 11,8% dengan intensitas kerusakan akar 69,20%. Intensitas kerusakan tanaman mutlak (keterjadian)dan kerusakan tanaman relatif (keparahan) tanaman kopi muda berkisar 32 – 61% dan 19 – 24% dengan intensitas kerusakan akar berkisar 35 – 48,17%.
EFEKTIFITAS METIL EUGENOL TERHADAP PENANGKAPAN LALAT BUAH PADA PERTANAMAN CABAI DI KABUPATEN TANGGAMUS
Authors: Mayasari Indah , Fitriana Yuyun , Wibowo Lestari , Purnomo Purnomo
Published: July 2019

Produksi cabai merah di Provinsi Lampung terus mengalami penurunan. Kendala yang sering dihadapi dalam peningkatan produksi tanaman cabai ialah gangguan hama, salah satunya lalat buah. Serangan lalat buah dapat menyebabkan kerugian yang cukup besar hingga 30%-60%. Salah satu pengendalian yang aman bagi lingkungan dan cukup efektif adalah penggunaan metil eugenol sebagai atraktan nabati lalat buah. Penelitian ini dilakukan dengan tujuan untuk mengetahui dosis metil eugenol yang efektif dalam mengendalikan hama lalat buah, mengetahuiperbedaan populasi tangkapan lalat buah berdasarkan perbedaan waktu pemasangan perangkap lalat buah, mengetahui interaksi antara dosis dan waktu pemasangan serta mengetahu jenis-jenis lalat buah yang ada pada tanaman cabai. Perlakuan disusun dengan Rancangan Acak Kelompok (RAK) faktorial. Faktor pertama adalah beberapa taraf dosis metil eugenol dan faktor kedua yaitu perbedaan waktu pemasangan perangkap lalat buah (pagi dan siang). Hasil penelitian menunjukkan dosis metil eugenol yang efektif untuk mengendalikan hama lalat buah pada tanaman cabai ialah 1,5 ml/perangkap. Pemasangan perangkap lalat buah saat pagi lebih efektif dibandingkan saat siang hari. Perangkap akan lebih efektif bila dipasang dengan dosis 1,5 ml/perangkap dan diaplikasikan saat pagi hari karena dengan dosis dan waktu pemasangan tersebut menghasilkan jumlah tangkapan tertinggi. Selain itu ditemukan 2 jenis lalat buah yaitu Bactrocera dorsalis dan Bactrocera umbrosa.
PENGUJIAN EFIKASI CENDAWAN Metarhizium anisopliae s.l. PADA HAMA ULAT API (Setothosea asigna) DI LABORATORIUM
Authors: Dzulhia Yuni , Susilo F. X. , Hariri Agus M. , Fitriana Yuyun
Published: July 2019

Penelitian ini bertujuan untuk mengetahui pertumbuhan dan perkembangan M.anisopliae s.l.dan efikasi cendawan M.anisopliae s.l. terhadap ulat api. Penelitian dilakukan di Laboratorium Bioteknologi Pertanian, Fakultas Pertanian, Universitas Lampung. Metode penelitian meliputi uji pertumbuhan dan perkembangan M. anisopliae s.l. secara in vitro dan uji efikasi M. anisopliae s.l. pada ulat api. Percobaan uji pertumbuhan dan perkembangan M.anisopliae s.l. secara in vitromenggunakan Rancangan Acak Lengkap (RAL) dan diulang 4 kali. Uji efikasiM. anisopliae s.l. pada ulat api menggunakan analisis probit untuk menentukan nilai LC 50 dan LT 50 dari isolat Myf 51 dan Myf B. Perlakuan terdiri dari M.anisopliae s.l. B (wildtype), M.anisopliae s.l.1 (mutan), M.anisopliae s.l.42 (mutan), dan M.anisopliae s.l. 51 (mutan). Hasil penelitian menunjukkan bahwa isolat mutan Myf 51, Myf 42, dan Myf 1 mampu tumbuh dan berkembang normal sebagaimana isolat Myf B (wildtype). Isolat Myf 51 (mutan) dan Myf B (wildtype) efektif mengendalikan 50% ulat api dengan nilai LC 50 Myf 51 sebesar 1,06 x 10 5 konidia/ml dan LC 50 Myf B sebesar 2,92 x 10 5 konidia/ml. LT 50 Myf 51 dan Myf B terhadap ulat api relatif sama, yaitu pada kisaran 4,6 - 6,6 hari setelah aplikasi (hsa).
PENGARUH PEMBERIAN KOMBINASI PUPUK ORGANONITROFOS DAN PUPUK KIMIA DENGAN PENAMBAHAN BIOCHAR TERHADAP KEMANTAPAN AGREGAT TANAH ULTISOL DI NATAR DAN TAMAN BOGO
Authors: Rinaldi Aan , Dermiyati Dermiyati , Taisa Rianida , Afandi Afandi
Published: July 2019

Penelitian ini bertujuan untuk mengetahui kombinasi pupuk organonitrofos dan pupuk kimia dengan penambahan biochar yang paling efisien untuk memperbaiki kemantapan agregat tanah. Penelitian dilaksanakan di dua lokasi yaitu kebun percobaan BPTP (Balai Pengkajian Teknologi Pertanian) Provinsi Lampung dilaksanakan pada Juni 2016 sampai dengan September 2016 dan di kebun percobaan Taman Bogo Lampung Timur dilaksanakan dari April sampai dengan Juli 2016. Rancangan perlakuan menggunakan Rancangan Acak Kelompok (RAK) dengan 11 perlakuan dan 3 ulangan. Pengujian homogenitas ragam menggunakan uji Bartlett sedangkan uji aditifitas data menggunakan uji Tukey. Kemudian dilakukan uji standar devisiasi. Variabel yang diamati adalah kemantapanagregat dengan metode ayakan ganda (ayakan kering dan ayakan basah). Hasil penelitian menunjukkan bahwa kombinasi pupuk organonitrofos dan pupuk kimia dengan penambahanbiocharyang paling efisien memperbaiki kemantapan agregat tanah di lokasi BPTP adalah100 % NPK + 100 % OP yaitu 52,260. Sedangkan di lokasi Taman Bogo kombinasi pupuk organonitrofos dan pupuk kimia dengan penambahanbiochar yang paling efisien untuk memperbaiki kemantapan agregat tanah adalah75 % NPK + 25 % OP yaitu 53,143.
Uji Patogenisitas Jamur Metarhizium sp. Isolat Salatiga dan Lampung Selatan terhadap Larva Oryctes rhinoceros di Laboratorium
Authors: Widiarti Dewi Gusti , Wibowo Lestari , Hariri Agus M. , Fitriana Yuyun
Published: July 2019

Penelitian ini bertujuan untuk mengetahui patogenisitas jamur Metarhizium sp. isolat Salatiga dan isolat Lampung Selatan terhadap larva Oryctes rhinoceros. penelitian ini dilakukan di Laboratorium Hama danPenyakit Tanaman, Fakultas Pertanian, Universitas Lampung. Penelitian dimulai bulan Mei – Oktober. Penelitian ini disusun dalam Rancangan Acak Lengkap (RAL), yang terdiri dari lima perlakuan yaitu tanpa aplikasi jamur Metarhizium sp. terhadap larva O. rhinoceros, aplikasi jamur Metarhizium sp. isolat Salatiga terhadap larva O. rhinoceros dengan dosis 25 g/500 g media hidup larva O. rhinoceros, aplikasi jamur Metarhizium sp. isolat Salatiga terhadap larva O. rhinoceros dengan dosis 50 g/500 g media hidup larva O. rhinoceros, aplikasi jamur Metarhizium sp. isolat Lampung Selatan terhadap larva O. rhinoceros dengan dosis 25 g/500 g media hidup larva O. rhinoceros, aplikasi jamur Metarhizium sp. isolat Lampung Selatan terhadap larva O. rhinoceros dengan dosis 50 g/500 g media hidup larva O. rhinoceros dengan perlakuan diulang sebanyak tiga kali. Homogenitas ragam diuji dengan uji Bartlett, jika asumsi terpenuhi data dianalisis dengan sidik ragam menggunakan Uji F. Perbedaan nilai tengah perlakuan akan diuji dengan Uji Beda Nyata Terkecil (BNT) pada taraf 5%. Hasil penelitian menunjukkan bahwa Jamur Metarhizium sp. isolat Salatigadan isolat Lampung Selatan mampu menginfeksi dan menyebapkan kematian larva O. rhinoceros yang berada di Lampung. Aplikasi jamur Metarhizium sp. Lampung Selatan mampu menyebabkan kematian 100% larva O. rhinoceros pada 17 hsa, sedangkan aplikasi jamur Metarhizium sp. Salatiga mampu menyebabkan kematian 100% larva O. rhinoceros pada 19 hsa.
Pengaruh Pupuk Hayati dan Konsentrasi Pupuk Pelengkap terhadap Respirasi Tanah pada Pertanaman Bawang Putih (Allium sativum L.) Ketinggian 500 Mdpl Kabupaten Tanggamus
Authors: Raminda Ayu Dwi , Yusnaini Sri , Hendarto Kus , Niswati Ainin
Published: July 2019

Respirasi tanah merupakan pencerminan aktivitas mikroorganisme tanah. Pengukuran respirasi (mikroorganisme tanah) merupakan salah satu cara digunakan untuk menentukan tingkat aktivitas mikroorganisme tanah. Penetapan respirasi tanah berdasarkan penetapan jumlah CO 2 yang dihasilkan oleh mikroorganisme tanah dan jumlah O 2 yang digunakan oleh mikroorganisme tanah Penelitian ini bertujuan untuk mengetahui pengaruh pemberian pupuk hayati (Bio Max Grow), pupuk pelengkap Plant Catalyst dan interaksi antara kedua pupuk tersebut terhadap respirasi tanah pada pertanaman bawang putih (Allium Sativum L.). Penelitian ini menggunakan Rancangan Acak Kelompok (RAK) yang disusun secara faktorial, faktor pertama dosis pupuk hayati Bio Max Grow (B) dan faktor kedua konsentrasi pupuk pelengkap Plant Catalyst (P), setiap perlakuan diulang sebanyak tiga kali sehingga diperoleh 24 petak satuan percobaan. Data yang diperoleh dianalisis dengan sidik ragam pada taraf 5% yang terlebih dahulu diuji hmogenitas ragamnya dengan menggunakan UjiBartlett dan adivitasnya diuji dengan Uji Tukey. Rata-rata nilai tengah dari data diuji dengan uji BNT pada taraf 5%. Hubungan antara pH tanah, kadar air tanah, suhu tanah, dan C-organik dengan respirasi tanah diujidengan uji korelasi. Hasil penelitian menunjukan bahwa perlakuan pupuk hayati 10 ml.L -1 (B 1 ) memberikan nilai respirasi yang lebih tinggi yaitu 61, 42 C-CO 2 mg. jam -1 m -2 dibanding dengan tanpa pupuk hayati yaitu 44,52 C-CO 2 mg. jam -1 m -2 pada pengamatan 45 hari setelah tanam (HST). Pemberian konsentrasi pupuk pelengkap memberikan nilai respirasi yang berbeda dengan tanpa pupuk pelengkap, tetapi antar pupuk pelengkap P 1 , P 2 , dan P 3 tidak berbeda, dengan nilai respirasi berurut 51,02 C-CO 2 mg. jam -1 m -2 , 63,69 C- CO 2 mg. jam -1 m -2 , dan 59,47 C-CO 2 mg. jam -1 m -2 pada pengamatan 45 hari setelah tanam (HST). Terdapat interaksi antara pemberian pupuk hayati dan konsentrasi pupuk pelengkap terhadap respirasi tanah pada pengamatan 45 hari setelah tanam (HST). Perlakuan tanpa pupuk hayati (B 0 ), menghasilkan nilai respirasi tertinggi pada konsentrasi pupuk pelengkap 1,5 g. L -1 yaitu 60,44 C-CO 2 mg. jam -1 m -2 dan tidak berbedadengan P 1 , sedangkan perlakuan pupuk hayati (B 1 ) nilai respirasi tertinggi terdapat pada konsentrasi pupuk pelengkap 1g.L -1 yaitu 91,64 C-CO 2 mg. jam -1 m -2 .
STUDI PERTUMBUHAN, PRODUKSI, DAN MUTU BENIH SEMBILAN VARIETAS KEDELAI (Glycine max[L.] Merrill) YANG DITANAM DI LAHAN SAWAH MUSIM KEMARAU
Authors: Kuncahyo Aditya , Agustiansyah Agustiansyah , Ermawati Ermawati , Pramono Eko
Published: July 2019

Penelitian ini bertujuan untuk mengetahui pertumbuhan, produksi, dan mutu benih sembilan varietas kedelai yang ditanam di lahan sawah musim kemarau. Penelitian dilaksanakan pada Juni sampai September 2017 di lahan sawah Desa Sritejo Kencono Kecamatan Kota Gajah Lampung Tengah dan Laboratorium Benih dan Pemuliaan Tanaman Fakultas Pertanian Universitas Lampung. Penelitian menggunakan Rancangan Kelompok Teracak Sempurna dengan perlakuan sembilan varietas kedelai yang terdiri dari Varietas Anjasmoro, Grobogan, Burangrang, Dena-1, Devon-1, Argomulyo, Gema, Dering-1, dan Wilis. Perlakuan diulang sebanyak tiga kali sehingga diperolah 27 satuan percobaan. Homogenitas ragam diuji dengan Uji Bartlett, sifat kemenambahan data diuji dengan Uji Tukey, dan jika asumsi terpenuhi data dianalisis dengan sidik ragam. Pemisahan nilai tengah menggunakan uji perbandingan kelas pada taraf á = 5%. Hasil penelitian menunjukkan bahwa sembilan varietas menunjukkan perbedaan pada pertumbuhan, produksi dan mutu benih kedelai yang ditanam di lahan sawah musim kemarau. Varietas berumur dalam (Anjasmoro) menghasilkan pertumbuhan, dan produksi yang lebihbaik daripada varietas berumur sedang dan genjah dilihat dari bobot kering berangkasan sebesar 45,46 gram dan bobot biji per tanaman 50,81 gram. Mutu benih varietas berumur dalam (Anjasmoro) lebih rendah daripada varietas berumur sedang dan genjah, tetapi masih menunjukkan mutu yang tinggi dengan persentase daya berkecambah lebih dari 80%. Varietas berumur sedang menghasilkan bobot kering berangkasan 43,9 gram dan bobot biji per tanaman 50,41 gram lebih baik daripada varietas berumur genjah dengan bobot kering berangkasan 34,3 gram, dan bobot biji per tanaman 42,96 gram. Pada varietas berumur sedang Varietas Burangrang menunjukkan pertumbuhan dan produksi terbaik dengan bobot kering berangkasan sebesar 48,58 gram dan bobot biji per tanaman 53,06 gram, sedangkan pada varietas berumur genjah Varietas Dena-1 menunjukkan pertumbuhan dan produksi terbaik dilihat dari bobot kering berangkasan sebesar 40,35 gram dan bobot biji pertanaman 51,90 gram.
A Review on Segmentation Techniques in Large-Scale Remote Sensing Images
Authors: Tripathi Rakesh , Gupta Neelesh
Published: July 2019

Information extraction is a very challenging task because remote sensing images are very complicated and can be influenced by many factors. The information we can derive from a remote sensing image mostly depends on the image segmentation results. Image segmentation is an important processing step in most image, video and computer vision applications. Extensive research has been done in creating many different approaches and algorithms for image segmentation. Labeling different parts of the image has been a challenging aspect of image processing. Segmentation is considered as one of the main steps in image processing. It divides a digital image into multiple regions in order to analyze them. It is also used to distinguish different objects in the image. Several image segmentation techniques have been developed by the researchers in order to make images smooth and easy to evaluate. Various algorithms for automating the segmentation process have been proposed, tested and evaluated to find the most ideal algorithm to be used for different types of images. In this paper a review of basic image segmentation techniques of satellite images is presented.
SINTESIS DAN KARAKTERISASI HIDROKSIAPATIT DARI CANGKANG KERANG DARAH (Anadara granosa) SEBAGAI BAHAN BAKU SEMEN TAMBAL GIGI
Authors: Rahmaniah Rahmaniah
Published: July 2019

Hidroksiapatit (HAp) merupakan senyawa mineral apatit. HAp merupakan senyawa yang memiliki kemiripan dengan bagian mineral dalam tulang. Pemanfaatan hidroksiapatit dalam bidang medis khususnya dalam bidang kedokteran gigi terus dikembangkan dalam berbagai penelitian, salah satu contohnya adalah pemanfaatan hidroksiapatit dari cangkang kerang darah sebagai semen tambal gigi. Tujuan penelitian ini adalah mengetahui struktur kristal, ukuran butiran dan sifat mekanik hidroksiapatit dari cangkang kerang darah. Metode yang digunakan dalam penelitian ini adalah metode eksperimen dengan menggunakan alat uji XRD untuk mengetahui struktur dan ukuran butiran krital sedangkan alat Universal Testing Mechine (UTM) digunakan untuk mengetahui kuat tekan sampel. Hasil penelitian menunjukkan struktur kristal yang dihasilkan dari sintesis hidroksiapatit cangkang kerang darah adalah aragonite dengan rata-rata ukuran kristal yang dihasilkan sebesar 5,87 nm. Sedangkan nilai kuat tekan yang terbesar diperoleh pada sampel 2 yaitu 9,521 MPa, sedangkan nilai kuat tekan yang terkecil yaitu pada sampel 1 sebesar 3,51 MPa.
From Mindful Eating to Mindfulness in COPD
Authors: Hâncu Anca , Mihălţan Florin
Published: July 2019

Mindfulness is a complex mental state meaning paying attention to the present moment but non judgemental, practically awareness of present. Developed like a form of mental training, has the objective to replace automatic or reactive modes of mind.

Processes to improve a non-judgemental attitude by mindfulness meditation and cognitive training may relieve psychological distress in COPD, where stigma and self blame, associated with depression are highly prevalent. Mindfulness based trainings could be included as add on treatments in pulmonary rehabilitation programs , with a hope to improve patients self-care and adherence.
Response of African Eggplant (Solanum macrocarpon L.) to Foliar Application of 6-Benzylaminopurine and Gibberellic Acid
Authors: Opabode Jelili T. , Owojori Simbiat
Published: July 2019

The influence of foliar application of benzylaminopurine (BAP) and gibberellic acid (GA3) alone and in combination on quantitative and qualitative yields of Solanum macrocarpon L. ‘Igbagba’ was investigated to increase the production of the vegetable. Treatments were arranged in randomized complete block design with three replicates. Analysis of variance showed that treatments had significant (p < 0.05) influence on all parameters measured. Foliar application of 20–40 mg·dm−3 of GA3 alone doubled the shoot heights compared with other treatments. The highest leaf area, fresh shoot weight, dry weight and number of regrowth was observed on plants to which foliar application of 40 mg·dm−3 of BAP and 30 mg·dm−3 of GA3 was applied. Combinations of 40 mg·dm−3 of BAP and 30–40 mg·dm−3 of GA3 produced the highest quantities of chlorophyll a and chlorophyll b, carotenoids, total phenolics, soluble sugars and soluble protein. Highest moisture, crude protein, crude fat and ash contents were detected when 40 mg·dm−3 of BAP and 10–40 mg·dm−3 of GA3 were applied. However, the application of GA3 alone promoted crude fiber and carbohydrate synthesis. Leaf Na, P, Ca, Mg, Zn and Fe had highest quantities when 40 mg·dm−3 of BAP was combined with 30–40 mg·dm−3 of GA3. Leaf K was promoted by the application of BAP alone and combination of 40 mg·dm−3 of BAP and 10–20 mg·dm−3 of GA3. The highest number of re-growth was observed when 40 mg·dm−3 of BAP was combined with 30 mg·dm−3 of GA3. Foliar application of 40 mg·dm−3 of BAP and 30 mg·dm−3 of GA3 in combination was suggested for the enhancement of quantitative and qualitative yields of the vegetable.
Storage and Quality of Apples ‘Reinette Simirenko’, Depending on the Dose of Post-Harvest Treatment with Ethylene Inhibitor 1-MCP
Authors: Melnyk Oleksandr , Drozd Olha , Melnyk Ihor
Published: July 2019

Natural weight losses, flesh and core browning, senescent breakdown and fruit rot, ethylene-production, firmness, soluble solids content, titratable acidity and taste of apple ‘Reinette Simirenko’ during storage, depending on the dose of postharvest treatment with 1-methylcyclopropene (1-MCP) were studied. Fruits were collected in harvesting maturity and treated with 1-MCP at the recommended dose of 1000 ppb (SmartFreshTM 0.068 g·m−3) and experimental doses of 750 ppb (75% of the recommended dose) and 500 ppb (50%). Apples were stored at 2 ± 1 °C and air humidity 85–90%. After seven months of cold storage, irrespective of dose of 1-MCP, on the 20th day of shelf-life, ethylene production from the treated apples was 3.9–5.3 times lower than that of the untreated ones. During the seven months of storage, fruits with post-harvest treatment had high firmness – 8.8–9.0 kg without a significant difference in range of 500–1000 ppb 1-MCP. 1-MCP treatment provides 0.6–1.0% higher content of soluble solids (highest level is for the treatment of 750 and 1000 ppb). Content of titratable acidity was higher by 1.4–1.7 times (the highest acidity was at 1000 ppb and, respectively, 1.1 and 1.2 times lower when treated with doses of 750 and 500 ppb). There was no skin browning and senescent breakdown and no flesh browning at 750 and 1000 ppb, and no fruit rot at 1000 ppb. When smaller doses (as recommended) are applied, a more harmonious taste of apples without reducing storage ability is achieved.
Morphology and molecular phylogeny of Gomphonemopsis sieminskae sp. nov. isolated from brackish waters of the East China Sea coast
Authors: Krzywda Marta , Gastineau Romain , Bąk Małgorzata , Dąbek Przemysław , Górecka Ewa , Chengxu Zhou , Lange-Bertalot Horst , Li Chun L. , Witkowski Andrzej
Published: July 2019

We describe the new species Gomphonemopsis sieminskae from brackish waters of the East China Sea littoral near Ningbo, China. Two diatom strains isolated from Ulva sp. were successfully grown, then analyzed by light (LM) and scanning electron (SEM) microscopy. The new species is compared to known Gomphonemopsis species, and similarities to G. pseudoexigua and G. obscurum are emphasized. Although the size metric data overlap and the external views are fairly similar, the two taxa differ in their valve interior. Molecular barcoding strongly discriminated G. sieminskae from G. cf. exigua, while rbcL gene-based phylogeny showed G. sieminskae to be sister to Phaeodactylum tricornutum. In this respect our results confirm the recent discovery, based on molecular data, that Gomphonemopsis is a close-relative taxon to Phaeodactylum, and place it in Phaeodactylaceae instead of Rhoicospheniaceae as inferred solely from morphology.
Freshwater red algae in Finland
Authors: Eloranta Pertti
Published: July 2019

There were only less than sixty records of freshwater red algae in Finland until the 1980s, when the author began sampling the running waters of southern and central Finland; 516 new records were made in 1984–2011. More intensive research began in 2012, with a few field teams working at first in Central Finland Province and then covering the whole country. The project continued until 2018. During these studies approximately 3400 new locations were investigated and 3641 new records of 29 taxa were made. Since 2013, 12 ecological variables have also been measured or estimated. The share of positive records from the studied locations varied from 49% to 86% (avg. 72%), being highest in Lapland (85.5%). The most frequent taxa were Batrachospermum gelatinosum (36.5%), Audouinella hermannii (14.5%), Sheathia arcuata (9.3%), Sirodotia suecica (8.4%), Audouinella chalybea (4.7%), Lemanea fluviatilis (3.8%) and Lemanea fucina (2.8%). Batrachospermum elegans, Kumanoa virgatodecaisneana and Lemanea mamillosa occurred in southwestern Finland in waters with higher conductivity, whereas Batrachospermum turfosum and Virescentia vogesiaca were typical taxa of acidic and soft water. Batrachospermum sporulans and Lemanea condensata occurred only in northern Finland. Some records did not fit the recent morphological keys and should be analysed using molecular methods.