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"Parra, Hugo"
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Correction: Effects of gear modifications in a North Atlantic pelagic longline fishery: A multiyear study
[This corrects the article DOI: 10.1371/journal.pone.0292727.].
Journal Article
Effects of gear modifications in a North Atlantic pelagic longline fishery: A multiyear study
by
Santos, Marco A. R.
,
Bjorndal, Karen A.
,
Vandeperre, Frederic
in
Animals
,
Biology and Life Sciences
,
Conservation of Natural Resources
2023
The threat of population declines caused by pelagic longline fisheries in the Atlantic has increased the concern to find strategies that minimize the bycatch and mortality of non-target marine animals. Gear modification, such as the use of circle hooks instead of conventional J-hooks, has been identified as an effective bycatch reduction strategy in different pelagic longline fisheries around the world. This study aimed to verify the effectiveness of the use of circle hooks by quantifying catch rates, relative size selectivity, and anatomical hooking position for the most common target species (swordfish,
Xiphias gladius
, and blue shark,
Prionace glauca
), and some bycatch species (loggerhead sea turtles,
Caretta caretta
, and shortfin mako,
Isurus oxyrinchus
) caught by the Azorean longline fishing fleet. The trial was conducted for five consecutive years (2000–2004) using eight different types of hooks. In general, the blue shark catches using circle hooks were significantly higher compared to J (Mustad 9/0). The circle hooks also showed high probabilities of catching juvenile blue sharks. Conversely, the circle hooks were efficient in reducing the loggerhead sea turtle bycatch and were related to fewer catches of small sea turtle individuals. The use of circle hooks was also associated with reduced swordfish catches compared to J (Mustad 9/0), and the effect of hook types on length at capture was only significant for Circle (L. & P. 18/0—CLP18) and Ringed Tuna (RT). No significant differences were observed comparing hook type to either catch rates or size selectivity for shortfin mako. Additionally, circle hooks were more likely to lodge in the mouth than in deeper anatomical positions, when compared to J (Mustad 9/0), for the four species analysed. The present study demonstrated that the use of circle hooks could mitigate the impact of the pelagic longline fisheries in the Azores by decreasing the bycatch of sea turtles and reducing animal injuries caused by deep hooking.
Journal Article
Sea turtle (Reptilia, Testudines) diversity and occurrence in the Azores Archipelago (NE Atlantic)
by
Barcelos, Luís
,
Vandeperre, Frederic
,
Parra, Hugo
in
Aquatic biology
,
Archipelagoes
,
Atlantic
2023
Six species of marine turtles occur in the Azores Archipelago. The loggerhead,
Caretta caretta
(Linnaeus, 1758), is by far the most common species and is being constantly monitored and tagged by a joint project between the University of the Azores and the University of Florida since 1989. With the implementation of the tuna fishery observers (for dolphin safe seals), an increment of sea turtle reports has been verified as expected. The leather back turtle,
Dermochelys coriacea
(Vandelli, 1761) is the second most observed species in the Azores' EEZ, a fact probably also linked to the tuna fishery observation programme. All other species are occasional/vagrant albeit the green turtle,
Chelonia mydas
(Linnaeus, 1758) is more commonly seen than the others. Historically, sea turtles were occasionally taken for food in specific fishing villages and ports. Since 1986, sea turtles, as well as all marine mammals, are fully protected in the Azores although human-related activities (e.g. plastics, discarded fishing gear) do generate serious injuries and deaths.
In this paper, we update sea turtle species' checklist for the Azores and give detailed geographic coordinates on their known occurrences.
Journal Article
Relative abundance of oceanic juvenile loggerhead sea turtles in relation to nest production at source rookeries: implications for recruitment dynamics
by
Bjorndal, Karen A.
,
Vandeperre, Frederic
,
Parra, Hugo
in
704/158/1745
,
704/829/826
,
Abundance
2019
After hatching, juveniles of most sea turtle species undertake long migrations across ocean basins and remain in oceanic habitats for several years. Assessing population abundance and demographic parameters during this oceanic stage is challenging. Two long-recognized deficiencies in population assessment are (i) reliance on trends in numbers of nests or reproductive females at nesting beaches and (ii) ignorance of factors regulating recruitment to the early oceanic stage. To address these critical gaps, we examined 15 years of standardized loggerhead sighting data collected opportunistically by fisheries observers in the Azores archipelago. From 2001 to 2015, 429 loggerheads were sighted during 67,922 km of survey effort. We used a model-based approach to evaluate the influence of environmental factors and present the first estimates of relative abundance of oceanic-stage juvenile sea turtles. During this period, relative abundance of loggerheads in the Azores tracked annual nest abundance at source rookeries in Florida when adjusted for a 3-year lag. This concurrence of abundance patterns indicates that recruitment to the oceanic stage is more dependent on nest abundance at source rookeries than on stochastic processes derived from short term climatic variability, as previously believed.
Journal Article
Hyperbaric oxygen therapy decreases mortality due to Fournier's gangrene: a retrospective comparative study
2021
There is no consensus about the role of adjunctive hyperbaric oxygen therapy (HBOT) in the management of Fournier's gangrene. The aim of this study was to compare the evolution of patients with Fournier's gangrene treated with all classical measures with and without adjuvant HBOT. A retrospective comparative study regarding the evolution of patients treated for Fournier's gangrene was conducted in two periods. In period I, from 1990 to 2002, patients received standard treatments for Fournier's gangrene, which consisted of surgical debridement, antibiotic therapy and intensive care. In period II, from 2012 to 2019, adjunctive HBOT was added to the classical management strategy. All patients were assigned into four groups according to the anatomical severity classification and the area affected after the first debridement. This classification ensured that the groups could be comparable. The total number of patients in this study was 197, and these patients were divided into control group (118/59.9%) and HBOT group (79/40.1%). The mean age, comorbidities, and anatomical severity classification were similar between the two groups. In period I, 34 out of 118 (28.8%) patients died, while in the HBOT group, 3 out of 77 (3.7%) patients died (P < 0.001). The use of adjuvant HBOT in combination with classical treatment was associated with reduced mortality. This study was approved by the Institutional Review Board and the Ethics Committee of Ribeirão Preto Medical School, University of São Paulo, Brazil (No. 08/2018) on May 2, 2018.
Journal Article
Babel or Pentecost? Language-Related Issues in Catholic Involvement in the 1893 World's Parliament of Religions
2015
Many Christians interpreted the World's Parliament of Religions, held in Chicago in 1893, as \"the defiance of the dispersion of the descendants of Noah at Babel\" or as a \"second Pentecost.\" However, some Christians looked at mingling with people of other faith traditions with great concern and disapproval. The active and decisive involvement of members of the Catholic Church in the meeting reflected that tension. Various languagerelated issues relate to Catholic involvement in the parliament: the communicative power of actions beyond the power of words; Catholic efforts to articulate a pro-Catholic discourse in response to anti-Catholic, nativist narratives; the power of translation to interpret and influence dialogue between faith and culture and among religious traditions; and contested names by which some participating religious bodies were historically known. Based on consultation of the Propaganda Fide and Vatican archives, this article constitutes an attempt to shed light on the opportunity the World's Parliament of Religions provided the Catholic Church to articulate and debate its approach to interfaith dialogue.
Journal Article
Habitat Predictive Modelling of Demersal Fish Species in the Azores
Species distribution modelling of the marine environment has been extensively used to assess species–environment relationships to predict fish spatial distributions accurately. In this study we explored the application of two distinct modelling techniques, maximum entropy model (MaxEnt) and generalized linear models (GLMs) for predicting the potential distribution in the Azores economic exclusive zone (EEZ) of four economically important demersal fish species: blackbelly rosefish, Helicolenus dactylopterus dactylopterus, forkbeard, Phycis phycis, wreckfish, Polyprion americanus and offshore rockfish, Pontinus kuhlii. Models were constructed based on 13 years of fish presence/absence data derived from bottom longline surveys performed in the study area combined with high resolution (300 m) topographic and biogeochemical habitat seafloor variables. The most important predictors were depth and slope followed by sediment type, oxygen saturation and salinity, with relative contributions being similar among species. GLMs provided ‘outstanding’ model predictions (AUC>0.9) for two of the four fish species while MaxEnt provided ‘excellent’ model predictions (AUC=0.8–0.9) for three of four species. The level of agreement between observed and predicted presence/absence sites for both modelling techniques was ‘moderate’ (K=0.4–0.6) for three of the four species with P. americanus models presenting the lowest level of agreement (K<0.1). For the scope of this study, both modelling approaches presented here were determined to produce viable presence/absence maps which represent a snap–shot of the potential distributions of the investigated species. This information provides a better description of demersal fish spatial ecology and can be of a great deal of interest for future fisheries management and conservation planning.
Dissertation
Understanding the Why for a New Marine Corps MOS
2023
Maritime space officers Executive Summary The Marine Corps' establishment of a new primary MOS for maritime space officers (MSO) demonstrates the resolve of the Corps to utilize technological development across multiple sectors to advance tactical-level operations. The collective effort by both national and commercial sectors to develop the most accessible part of space is increasingly referred to by the community of space professionals as a new space race, and seemingly no one wants to be left behind. To remain competitive in leveraging spacepower, the United States established the Space Force and re-established the U.S. Space Command in late 2019.6 The nation's newest military branch operates with an expressed mandate to assume the lead on spacepower generation within the DOD. While the Space Force undertakes many unique missions, the most important aspects of its mission set are the preservation and enhancement of its sister Services' combat capabilities.7 However, enabling the Space Force to effectively integrate spacebased capabilities across the DOD requires that each Service have dedicated spacepower professionals who have formalized training.
Trade Publication Article
Standing with Unfamiliar Company on Uncommon Ground: The Catholic Church and the Chicago Parliaments of Religions
by
Parra, Carlos Hugo
in
Religion
2012
This study explores the struggle of the Catholic Church to be true to itself and its mission in the midst of other religions, in the context of the non-Catholic American culture, and in relation to the modern world and its discontents. As milestones of the global interfaith movement, American religious freedom and pluralism, and of the relation of religion to modernity, the Chicago Parliaments of Religions offer a unique window through which to view this Catholic struggle at work in the religious public square created by the Parliaments and the evolution of that struggle over the course of the century framed by the two Chicago events. In relation to other religions, the Catholic Church stretched itself from an exclusivist position of being the only true and good religion to an inclusivist position of recognizing that truth and good can be present in other religions. Uniquely, Catholic involvement in the centennial Parliament made the Church stretch itself even further, beyond the exclusivist-inclusivist spectrum into a pluralist framework in which the Church acted humbly as one religion among many. In relation to American culture, the Catholic Church stretched itself from a Eurocentric and monarchic worldview with claims of Catholic supremacy to the American alternative of democracy, religious freedom, and the separation of church and state. In relation to modernity, the Church stretched itself from viewing the modern world as an enemy to be fought and conquered to befriending modernity and designing some specific accommodations to it. In these three relationships, there was indeed a shift, but not at all a clean break. Instead a stretch occurred, acknowledging a lived intra-Catholic tension between religious exclusivism and inclusivism, between a universal Catholic identity and Catholic inculturation in America (and in other cultures), and between the immutability of Catholic eternal truths and their translatability into the new languages offered by the modern world. In all this the Second Vatican Council was the major catalyst. For all three cases the Chicago Parliaments of Religions serve as environments conducive to the raising of important questions about Catholic identity, the Catholic understanding of non-Catholics, and Catholic interfaith relations.
Dissertation
Connectivity Between Loggerhead Developmental Habitats in the Azores and In or Near Canadian Waters
by
Bjorndal, Karen A
,
Ferreira, Rogério L
,
James, Michael C
in
Biomarkers
,
Carapace
,
Caretta caretta
2019
Under this collaboration, more than 4,000 oceanic-stage loggerheads have been tagged with flipper tags by many partners in the Azores including faculty and students of DOP, government officials, commercial fishers, and ecotourism operators. Trained observers tagged (P8001/P8002) and measured (55.6 cm minimum straight carapace length) the loggerhead (Fig. 3). Because the turtle had been only lightly hooked in the lower jaw, it was selected for a study of survival probabilities in which pop-up archival transmitting tags were attached to 25 loggerheads in the North Atlantic (Sasso & Epperly 2007). A coordinated effort using all potential tagging techniques and biomarkers (including telemetry, genetics, stable isotopes, trace elements, and flipper tags) and all stakeholders (including commercial and recreational fisheries) is needed.
Journal Article