Ingeniería Forestal y ambiental en medios insulares

Las Islas Canarias a pesar de su reducida extensión y del relativo poco peso específico a nivel mundial, no es ajena a los problemas globales detectados en la conservación de bosques y en la importancia que éstos tienen para obtener beneficios económicos, socioculturales y ambientales. La gestión forestal sostenible es en este sentido esencial para asegurar y compatibilizar los diversos beneficios del bosque. El papel específico de los bosques y su gestión son sin embargo temas aún por conocer en nuestras islas, por lo que el Año Internacional de los Bosques ha representado una oportunidad única para dar a conocer el mundo forestal y acercarlo a nuestra sociedad. El presente libro consta de 25 capítulos donde se ha contemplado la mayoría de los aspectos a tener en cuenta en la planificación y gestión del medio forestal y natural. Desde la historia forestal del archipiélago, hasta el uso y técnicas de manejo de los recursos naturales, incluyendo el agua, la energía en forma de biomasa y la selvicultura

Open questions and misconceptions in the diagnosis and management of anemia in patients with gastrointestinal bleeding

Despite high prevalence of iron deficiency anemia (IDA) in patients with acute or chronic gastrointestinal bleeding (GIB), IDA and iron deficiency (ID) are frequently untreated. Reasons may be misconceptions about the impact and diagnosis of IDA and the efficacy of new treatments. Addressing these misconceptions, this article summarizes current evidence for better understanding and management of GIB-associated IDA. Despite only few controlled studies evaluated the efficacy of iron treatment in patients with GIB, there is consistent evidence suggesting that: (a) IDA should be diligently investigated, (b) effective treatment of ID/IDA improves outcomes such as health-related quality of life and can avoid severe cardiovascular consequences, and (c) intravenous iron should be considered as well-tolerated treatment in this setting. Overall, the misconceptions and practices outlined in this article should be replaced with strategies that are more in line with current guidelines and best practice in GIB and other underlying conditions of ID/IDA.A pesar de la alta prevalencia de anemia por déficit de hierro (ADH) en pacientes con hemorragia digestiva (HD) aguda o crónica, la ADH y el déficit de hierro (DH) son frecuentemente infratratados. Diversos conceptos erróneos sobre el impacto, el diagnóstico y la eficacia de los nuevos tratamientos de la ADH probablemente lo justifican. Para abordar estos errores conceptuales, este artículo resume la evidencia actual para una mejor comprensión y manejo de la ADH. A pesar de que existen pocos estudios controlados que hayan evaluado la eficacia del tratamiento con hierro en pacientes con HD, hay evidencia que sugiere que: (a) la ADH debe ser investigada diligentemente; (b) el tratamiento eficaz del DH/ADH mejora la calidad de vida relacionada con la salud y puede evitar relevantes complicaciones cardiovasculares, y (c) el hierro intravenoso debe ser considerado como un tratamiento bien tolerado en este contexto. En general, los conceptos erróneos y las prácticas inadecuadas descritas en este artículo deben ser reemplazados por estrategias que estén más en línea con las directrices actuales y buenas prácticas clínicas en HD y otras condiciones causantes del DH/ADHinfo:eu-repo/semantics/publishedVersio

Migration patterns and residence of bigeye tuna (Thunnus obesus) in North Atlantic Ocean, based on recent tagging, recapture data and historical data from Canary Islands, Madeira and Azores.

This study presents the results of an OATTP tagging program on Bigeye tuna (T. obesus) that has been conducted from 2016 to 2018 offshore of Canary, Madeira and Azores Islands. 5.640 records released from recent AOTTP surveys, 923 historical records and 5 electronic tracks records, all released above 27º North, and are analyzed. There are recovery patterns, one and long distance, where the species exceeds the latitude of 43º north and -1º south. Another short recovery pattern when the specie is moving between the archipelagos indicating the possibility of feeding behavior. The homing behavior of some fishes after different time period from year to year is observed. Migratory patterns are diverse throughout the study period and are consistent with the “time fishing” and “fishing ground” of the species in the East Atlantic. A preliminary analysis of tracks to display sinuous trajectories in the area is presented. The main objective of this article is to show migratory patterns of Bigeye tuna in the North Atlantic

Tuna tagging surveys on fishing on fishing vessels, effects and consequences of the Handling process

In this document, the harmful effects and consequences that occur on the body of tunas after the tagging process are analyzed. All the photographic and audiovisual material obtained in the tropical tuna tagging campaigns, carried out by the staff of the Canary Islands Oceanographic Center in the years 2016 (08/25/11/2016) and 2018 (06/10-28/10/2016), is analyzed. The eyes and caudal peduncle of tunas are the parts most damaged during the tagging process. It is discussed about bodily damage and possible improvements in the handling of tunas for an improvement in survival rates and a decrease in mortality after the tagging process

Incidence and factors predictive of recurrent thrombosis in patients with non-cirrhotic portal vein thrombosis.

BACKGROUND AND AIMS Clinical guidelines do not recommend long-term anticoagulation in non-cirrhotic splanchnic vein thrombosis (NC-SVT) without underlying thrombophilia because it is assumed that there is a very low risk of recurrent thrombosis (RT). Our first aim was to describe the incidence of RT in patients with NC-SVT without indication for long-term anticoagulation. The second aim was to identify RT risk factors and afterwards verify them in a validation cohort. METHODS Multicenter retrospective observational study evaluating risk factors for RT in 64 patients with NC-SVT of idiopathic/local etiology. In a subgroup of 48 patients the potential value of additional thrombophilic parameters to predict RT was analyzed. Findings were validated in 70 independent patients with idiopathic/local NC-SVT. RESULTS Of the 64 patients, 17 (26%) presented splanchnic and/or extra-splanchnic RT (overall-RT) during follow-up (cumulative incidence: 2%, 10%, 19% and 34% at 1, 2, 5 and 10 years). 53% of splanchnic RT were asymptomatic. No clinical or biochemical parameters predicted overall-RT. However, in the 48 patients with additional comprehensive thrombophilic study, factor VIII ≥ 150% was the only independent factor predicting overall-RT (HR 7.10 (CI 2.17 - 23.17) p 150% (HR 3.71 (1.31 - 10.5), p < 0.01). The predictive value of factor VIII was confirmed both in patients with idiopathic and with local etiology. CONCLUSIONS Patients with idiopathic/local NC-SVT are at risk of overall-RT. Splanchnic RT can be asymptomatic and requires screening for its detection. Values of factor VIII ≥ 150% may help identify patients at high risk of overall-RT who could benefit from long-term anticoagulation. LAY SUMMARY Patients with idiopathic/isolated local factor non cirrhotic splanchnic vein thrombosis (NC-SVT) were previously thought to be at minimal risk of rethrombosis. Our results show a 25% incidence of rethrombosis and support the indication of close follow-up to identify new thrombotic events, specially in patients with factor VIII >150%

Data Provision for Science-Based FAD Fishery Management: Spanish FAD Management Plan as a Case Study

The use of fish aggregating devices (FADs) in tropical tuna fisheries has increased significantly during recent decades. Concurrently, concern about juvenile tuna mortality, bycatch, and marine debris associated with FAD fisheries increased, and this led to the implementation of FAD management measures and more sustainable designs (e.g., non-entangling or biodegradable FADs, limits on active FADs, etc.). This document reviews data collection and reporting requirements of tuna-Regional Fisheries Management Organizations (t-RFMOs) on drifting FADs and summarizes the work carried out since 2010 under the Spanish FAD management plan to create an adequate standard data collection aimed at improving science-based decision making. The aim of this study is to assist in the strengthening of data collection systems through: (1) a review of the existing data requirements, (2) a review of the status of FAD data collection worldwide and identification of data gaps, and (3) recommendations aimed at improving FAD management through the strengthening of FAD data requirements. Due to the complexities of data collection, we summarize the difficulties faced when processing the data and propose concrete and practical solutions to improve both the data collection system and information quality

Liver Transplantation for Porto-Sinusoidal Vascular Liver Disorder: Long-term Outcome.

BACKGROUND AND AIMS Porto-sinusoidal vascular liver disorder (PSVD) is a rare disease that occasionally requires liver transplantation (LT), despite usually presenting preserved liver function. There remains a paucity of data pertaining to LT in PSVD. The aim was to identify features associated with post-LT outcomes in PSVD. METHODS Retrospective multicentre study of 79 patients who received LT for PSVD. RESULTS Median post-LT follow-up was 37 (range 1-261) mo. Refractory ascites 24 (30%), hepatic encephalopathy 16 (20%), and hepatopulmonary syndrome 13 (16.3%) were the most frequent indications for LT. Hepatocellular carcinoma was the indication in only 2 patients. Twenty-four patients died, 7 due to liver and 17 to non-liver related causes. Post-LT survival was 82.2%, 80.7%, and 68.6% at 1, 2, and 5 y, respectively. Post-LT survival was significantly better in patients without (n = 58) than in those with a persistent severe PSVD-associated condition (n = 21). Pre-LT hyperbilirubinemia levels and creatinine >100 µmol/L were also independently associated with poor survival. Six patients (7.6%) required a second LT. Recurrence of PSVD was confirmed by liver biopsy in only 1 patient and in 3 further patients it was likely. CONCLUSIONS LT in PSVD is associated with an acceptable outcome in the absence of associated severe conditions. However, persistence of a severe associated condition, pre-LT high bilirubin levels, or creatinine >100 µmol/L impact outcome, and these are features that should be considered when evaluating PSVD patients for LT. PSVD recurrence is possible after LT and needs to be explored, at least, in cases of posttransplant portal hypertension

Revista Temas Agrarios Volumen 26; Suplemento 1 de 2021

1st International and 2nd National Symposium of Agronomic Sciences: The rebirth of the scientific discussion space for the Colombian Agro.1 Simposio Intenacional y 2 Nacional de Ciencias Agronómicas: El renacer del espacio de discusión científica para el Agro colombiano