The occurrence of Scolymia cubensis in Brazil: revising the problem of the Caribbean solitary mussids

Zootaxa ◽  
2006 ◽  
Vol 1366 (1) ◽  
pp. 45 ◽  
Author(s):  
ELIZABETH NEVES ◽  
RODRIGO JOHNSSON ◽  
CLAUDIO SAMPAIO ◽  
MICHEL PICHON
Keyword(s):  
Small Group ◽  
Reproductive Behavior ◽  
Morphological Analysis ◽  
Scleractinian Corals ◽  
Ecological Interactions ◽  
Aggressive Interactions ◽  
Additional Information ◽  
The Caribbean ◽  
New Perspective ◽  
Zooxanthellate Corals

Identification of scleractinian corals is traditionally based upon morphological analysis of skeleton traits. However, due to the influence of the environment on coral development, and the pattern highly variable of most diagnostical characters, additional information related to anatomy of soft parts, reproductive behavior and ecological interactions have been argued to support the distinction among similar morphotypes. Caribbean and South Atlantic Scolymia comprise a small group of solitary zooxanthellate corals: Scolymia lacera, S. cubensis and S. wellsii have been far subject of taxonomical misunderstandings. Aggressive interactions bewteen S. lacera and S. cubensis were useful to validate their specific status. Nevertheless, S. wellsii has been erroneously suggested to be synonym of S. cubensis. Following Laborel, Lang and Wells’ studies, we reinforce the individuality of the Atlantic Scolymia species, confirming the occurrence of S. cubensis to Brazil. Supporting newly-reported occurrences of Caribbean species along the Brazilian littoral, this finding is likely to contribute with a new perspective to assess the ‘variability’ among scleractinian corals. A key for the identification of the Scolymia species is provided.

scholarly journals Coverage Increases of Porites astreoides in Grenada Determined by Shifts in Size-Frequency Distribution

Diversity ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 288
Author(s):  
Ryan G. Eagleson ◽  
John S. Lumsden ◽  
Lorenzo Álvarez-Filip ◽  
Christophe M. Herbinger ◽  
Ryan A. Horricks
Keyword(s):  
Coral Community ◽  
Scleractinian Corals ◽  
Area Measurement ◽  
Coralline Algae ◽  
Measurement Tool ◽  
Size Frequency Distribution ◽  
Point Count ◽  
Porites Astreoides ◽  
The Mean ◽  
The Caribbean

Despite coral community collapse, the mustard hill coral (Porites astreoides) is a species currently experiencing success throughout the Caribbean. The inshore reefs of Grenada were selected to study the influence of benthic factors on the abundance, size, and coverage of P. astreoides colonies. Surveys of reef communities along established 30 m transects were conducted at eight sites in 2014 and 2017 using a 0.5 m² quadrat. Coral Point Count was used to annotate the images, estimating the coverage of scleractinian corals, sponges, algae, and benthic substrates. Coverage, size, and abundance of P. astreoides colonies were quantified using the area measurement tool in ImageJ standardized against the quadrats. There were significant differences in benthic community assemblages between islands, selected sites, and between years. From 2014 to 2017 there was a significant decrease in the mean abundance of P. astreoides colonies and significant increases in mean colony size and coverage. The presence of P. astreoides colonies was significantly correlated with: rubble (−), sand (−); pavement (+); macroalgae (−); coralline algae (+); sponges (varying response); gorgonians (−); massive corals (+); and branching corals (−). P. astreoides follows similar recruitment patterns as other scleractinian corals. Observed changes in P. astreoides populations appear to indicate a recovery event following a disturbance, potentially tropical storm Chantal in 2013.

scholarly journals Textual Analysis and Sentiment Analysis in Accounting

2021 ◽  
Vol 24 (2) ◽  
pp. 168-183
Author(s):  
Juan L. Gandía ◽  
David Huguet
Keyword(s):  
Sentiment Analysis ◽  
Textual Analysis ◽  
Financial Information ◽  
Digital Tools ◽  
Future Research ◽  
Analysis Techniques ◽  
Additional Information ◽  
New Perspective ◽  
Medios De Comunicacion

A pesar del relativamente escaso uso de técnicas de análisis textual y de análisis del sentimiento en finanzas y contabilidad, éstas tienen un gran potencial en contabilidad, tanto por el elevado volumen de documentos utilizados para la comunicación de información financiera como por el crecimiento en el uso de herramientas digitales y medios de comunicación social. En este sentido, estas técnicas de análisis pueden ayudar a los investigadores a analizar pistas ocultas o buscar información adicional a la observada a través de los estados financieros, incrementando la cantidad y calidad de la información tradicionalmente utilizada, y proporcionando una nueva perspectiva de análisis. Por ello, el objetivo de este estudio es realizar una revisión del uso del análisis textual y del análisis del sentimiento en contabilidad. Tras presentar los conceptos de análisis textual y análisis del sentimiento y justificar teóricamente su papel en la investigación en contabilidad, llevamos a cabo una revisión de la literatura previa en el uso de estas técnicas en finanzas y contabilidad y describimos las principales técnicas de análisis del sentimiento, así como el procedimiento a seguir para el uso de esta metodología. Finalmente, sugerimos tres líneas de investigación futura que pueden beneficiarse del uso del análisis textual y del análisis del sentimiento. In spite of the relatively scarce use of textual analysis and sentiment analysis techniques in finance and accounting, they have great potential in accounting, both because of the volume of documents used for the communication of information and due to the growth in the use of digital tools and social media. In that regard, these techniques of analysis may help researchers to analyse hidden clues or look for additional information to that one observed through financial information, increasing the quantity and quality of the information traditionally used, and providing a new perspective of analysis. The aim of this study is to review the use of textual analysis and sentiment analysis in accounting. After presenting the concepts of textual analysis and sentiment analysis and expose their interest in accounting, we perform a review of the previous literature on the use of these techniques in finance and accounting and describe the main techniques of sentiment analysis, as well as the procedure to be followed for the use of this methodology. Finally, we suggest three lines of future research that may benefit from the use of textual and sentiment analysis.

Early Miocene shallow-water corals from La Guajira, Colombia: Part II, Mussidae–Siderastreidae and Milleporidae

2018 ◽  
Vol 93 (3) ◽  
pp. 416-436 ◽  
Author(s):  
Paola Flórez ◽  
Paula Zapata-Ramírez ◽  
James S. Klaus
Keyword(s):  
Shallow Water ◽  
The Other ◽  
Early Miocene ◽  
Caribbean Region ◽  
Coral Fauna ◽  
Living Species ◽  
The Caribbean ◽  
Established Species ◽  
Zooxanthellate Corals

AbstractIn this contribution we describe and illustrate 14 coral morphospecies collected from the early Miocene Siamaná (Aquitanian–Burdigalian) and Jimol (late Burdigalian) formations of the Cocinetas Basin in La Guajira Peninsula, northern Colombia. Eleven were identified as already established species including seven genera belonging to the families Mussidae, Pocilloporidae, Poritidae, Siderastreidae, and Milleporidae; the other three remain in open nomenclature. Nine of the 11 species identified (81%) are extinct. The remaining two living species,Siderastrea sidereaandMillepora alcicornis, are common on modern Caribbean reefs. Their presence in the Siamaná Formation extends their temporal range in the Caribbean region to the early Miocene. Most of the taxa described here were hermatypic and zooxanthellate corals of the order Scleractinia, with the exception of the fire coralMillepora alcicornis, of the order Anthothecata, family Milleporidae. The coral fauna recorded in the Siamaná and Jimol formations is typical of shallow and calm waters of the Oligocene–Miocene transition.

Towards a DNA taxonomy of Caribbean demosponges: a gene tree reconstructed from partial mitochondrial CO1 gene sequences supports previous rDNA phylogenies and provides a new perspective on the systematics of Demospongiae

2007 ◽  
Vol 87 (6) ◽  
pp. 1563-1570 ◽  
Author(s):  
Dirk Erpenbeck ◽  
Sandra Duran ◽  
Klaus Rützler ◽  
Valerie Paul ◽  
John N.A. Hooper ◽  
...  
Keyword(s):  
Gene Tree ◽  
Caribbean Sea ◽  
28S Rdna ◽  
Gene Trees ◽  
Cytochrome Oxidase Subunit ◽  
Dna Taxonomy ◽  
Its Gene ◽  
The Caribbean ◽  
Cytochrome Oxidase Subunit 1 ◽  
New Perspective

We present the most comprehensive cytochrome oxidase subunit 1 gene tree published to date for demosponges based on new sequences. The CO1 barcoding fragment is sequenced for 65 species from the Caribbean Sea, and its gene tree reconstructed. Although its deeper nodes are not particularly well-supported, the gene tree provides a variety of information for new phylogenetic patterns, as well as support for previously published 28S rDNA gene trees. In our analysis Halichondriidae cluster with Suberitidae, supporting previous 28S rDNA data. Chelae-bearing Poecilosclerida are monophyletic but most taxa lacking chelae in this dataset cluster more distantly. Haplosclerida are not resolved monophyletically under this fragment. While some species exhibit distinct barcodes, some genera contain species that share CO1 haplotypes.

scholarly journals The underground sex life of the Guatemalan Spike-thumb Frog (Plectrohyla guatemalensis)

2020 ◽  
Vol 15 (4) ◽  
pp. 551-559
Author(s):  
Sergio González-Mollinedo ◽  
Alejandro Mármol-Kattán
Keyword(s):  
Reproductive Behavior ◽  
Reproductive Period ◽  
Male Competition ◽  
Power Lines ◽  
Conservation Action ◽  
Additional Information ◽  
High Tension ◽  
Forest Coverage ◽  
The Impact ◽  
Two Populations

Two populations of Plectrohyla guatemalensis from two different sites in Sacatepéquez, Guatemala, were monitored for three consecutive rainy seasons, and noteworthy reproductive behavior was observed. The objective of the surveys was to assess the impact of nearby high-tension power lines, but additional information could be obtained. Our observations that male vocalizations to attract females occurred in the crevices of rocks in streams, inside which females lay eggs, suggest that the species’ reproduction is closely linked to the presence of such crevices. Any clutches were then guarded by the male until hatching. We inferred the existence of male-male competition for gaining control of these reproduction sites building upon previous observations, remarks about the genus and other species with similar patterns, and evidence of such aggression, although we did not directly observe any. Also, with the help of local wardens, we recorded vocalizations in mid-January, extending the previously reported reproductive period for this species. We therefore consider the conservation and restoration of rocky streams with adequate forest coverage to be an important conservation action for this species.

scholarly journals Relationship between Tree Richness and Temporary Stability of Plant Communities: A Case Study of a Forest in Northeast China

Forests ◽  
2021 ◽  
Vol 12 (12) ◽  
pp. 1756
Author(s):  
Zhiyuan Jia ◽  
Shusen Ge ◽  
Yutang Li ◽  
Dongwei Kang ◽  
Junqing Li
Keyword(s):  
Linear Relationship ◽  
Northeast China ◽  
Field Survey ◽  
Community Characteristics ◽  
Additional Information ◽  
Significant Linear Relationship ◽  
New Perspective ◽  
The Relationship ◽  
Stability Of Plant Communities

The relationship between diversity and stability is a classic issue in ecology, but no general consensus has been achieved. To address this relationship, a field survey of a forest in Northeast China was conducted. The temporary stability was defined from the perspective of community characteristics. The results showed that communities with the highest temporary stability value were characterized by a single dominant species. A significant linear relationship with a low R2 value was observed between temporary stability and tree richness. When dominant and non-dominant tree species were studied, no significant linear relationship was obtained between temporary stability and non-dominant tree richness. However, the relationship between temporary stability and dominant tree richness was significant with a high R2 value, and the temporary stability decreased with increasing dominant tree richness. This study demonstrates that dominant tree richness is closely related to temporary stability, and temporary stability can serve as a stability indicator. The results provide a new perspective for understanding stability and additional information for revealing the relationship between diversity and stability in forest ecosystems.

scholarly journals Isolation and structural analysis of a gene coding for a novel type of aspartic proteinase from buckwheat seed (Fagopyrum esculentum Moench)

2007 ◽  
Vol 59 (2) ◽  
pp. 119-124
Author(s):  
Mira Milisavljevic ◽  
Gordana Timotijevic ◽  
Svetlana Radovic ◽  
M.M. Konstantinovic ◽  
Vesna Maksimovic
Keyword(s):  
Structural Analysis ◽  
Small Group ◽  
Cdna Library ◽  
Plant Species ◽  
Bioinformatics Analysis ◽  
Aspartic Proteinase ◽  
Genomic Fragment ◽  
Gene Coding ◽  
New Perspective ◽  
Fagopyrum Esculentum Moench

A novel type of aspartic proteinase gene was isolated from the cDNA library of developing buckwheat seeds. This cDNA, FeAPL1, encoded an AP-like protein lacking the plant-specific insert (PSI) domain characteristic of typical plant aspartic proteinases. In addition the corresponding genomic fragment was isolated. It is demonstrated that this gene does not contain introns. Since bioinformatics analysis of the Arabidopsis genome showed that most potential AP genes are intronless and PSI-less, it appears that "atypical" is an inappropriate word for that class of AP. Isolation of this specific buckwheat gene among the small group of those isolated from other plant species provides a new perspective on the diversity of AP family members in plants. .

Pivot the Future Makers: Building our People and Places

2021 ◽  
Author(s):  
Wilson Pollock
Keyword(s):  
Small Group ◽  
Electric Vehicles ◽  
Comic Book ◽  
Digital Transformation ◽  
The People ◽  
Big Ideas ◽  
Powerful Means ◽  
The Future ◽  
The Caribbean ◽  
Radical Ideas

Pivot is a movement of radical ideas for the Caribbean of the future. In 2020, the IDB and its partners (Caribbean Climate Smart-Accelerator (CCSA), Destination Experience (DE), and Singularity University) launched The Pivot Movement and asked the people of the Caribbean to think of big ideas to transform the region. A small group came together at The Pivot Event to design 9 moonshots for electric vehicles, digital transformation and tourism. Pivot: The Future Makers is a comic book produced by the Pivot partners and illustrated by Caribbean artists. In it, the 9 moonshots have been developed into fictional stories as a simple and powerful means of conveying possible, probable futures, to help us visualize the Caribbean in 2040.

The Habitat Utilisation and Social Behaviour of Captive Rock-wallabies: Implications for Management.

1996 ◽  
Vol 19 (2) ◽  
pp. 191
Author(s):  
J. Bulinski ◽  
D. Goldney ◽  
J. Bauer
Keyword(s):  
Small Group ◽  
Social Behaviour ◽  
Habitat Type ◽  
Line Frequency ◽  
Aggressive Interactions ◽  
Resting Sites ◽  
Adult Females ◽  
Preferred Habitat ◽  
Dominant Female ◽  
The Social

As part of a breeding program a small group of Brush-tailed Rock-wallabies, Petrogale penicillata, was captured within the Jenolan Caves reserve and transferred to a nearby enclosure. This study examined the social behaviour and habitat utilisation of these captive rock-wallabies. The subjects were observed in slightly over half (52.2%) of the area available within the enclosure. Sightings were concentrated around a small cliff line. Frequency of sightings within grid cells was significantly correlated with scat density but unrelated to a measure of visibility suggesting the rock-wallabies exhibit strong preference for certain habitats. A Poisson analysis indicated that preferred habitat was characterised as having a northerly aspect, high levels of rock coverage and high shrub density. There was only a small amount of this habitat type within the enclosure which may account for the high levels of aggression which we observed (23.9% of all social behaviour). Aggression was particularly prevalent between adult females (64.8% of all aggressive interactions). The subordinate female was the only animal observed to use resting sites to the south of the cliff line. We suggest that aggression from the dominant female forced the subordinate female to use these less preferred areas.

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