The Impact of Hurricane Disturbances on a Tropical Forest: Implementing a Palm Plant Functional Type and Hurricane Disturbance Module in ED2-HuDi V1.0

Hurricanes commonly disturb and damage tropical forests. It is predicted that changes in climate will result in changes in hurricane frequency and intensity. Modeling is needed to investigate the potential response of forests to future disturbances. Unfortunately, existing models of forests dynamics are not presently able to account for hurricane disturbances. We implement the Hurricane Disturbance in the Ecosystem Demography model (ED2) (ED2-HuDi). The hurricane disturbance includes hurricane-induced immediate mortality and subsequent recovery modules. The parameterizations are based on observations at the Bisley Experimental Watersheds (BEW) in the Luquillo Experimental Forest in Puerto Rico. We add one new plant functional type (PFT) to the model—Palm, as palms cannot be categorized into one of the current existing PFTs and are known to be an abundant component of tropical forests worldwide. The model is calibrated with observations at BEW using the generalized likelihood uncertainty estimates (GLUE) approach. The optimal simulation obtained from GLUE has a mean relative error of −21 %, −12 %, and −15 % for stem density, basal area, and aboveground biomass, respectively. The optimal simulation also agrees well with the observation in terms of PFT composition (+1%, −8 %, −2 %, and +9 % differences in the percentages of Early, Mid, Late, and Palm PFTs, respectively) and size structure of the forest (+0.8 % differences in the percentage of large stems). Lastly, using the optimal parameter set, we study the impact of forest initial condition on the recovery of the forest from a single hurricane disturbance. The results indicate that, compared to a no-hurricane scenario, a single hurricane disturbance has little impact on forest structure (+1 % change in the percentage of large stems) and composition (< 1 % change in the percentage of each of the four PFTs) but leads to 5 % higher aboveground biomass after 80 years of succession. The assumption of a less severe hurricane disturbance leads to a 4 % increase in aboveground biomass.

A Comparison of Two Genres: Lexical Bundles in the Discourse of Applied Linguistics

The present article is a corpus-based descriptive/comparative study of lexical bundles (LBs) in two university genres: textbooks (TBs) and research articles (RAs) on applied linguistics. It aims to identify the LBs used in the two genres, compare them on the basis of their functional type and frequency and explore how they are related to genre. To this end, four-word LBs were identified in two corpora drawn from applied linguistics TBs and RAs. The comparative analysis revealed that there are interesting differences between the two genres in terms of discourse functions: the occurrence of LBs in the TBs was lower than in the RAs; attitudinal/modality LBs occurred more frequently in the TBs than in the RAs; epistemic LBs occurred more frequently in the RAs than in the TBs; discourse organizers occurred more frequently in the RAs than in the TBs; and time, place and text reference LBs occurred almost twice as frequently in the RAs. The findings build on research into the variations of genres in terms of the use and functions of LBs in discipline-specific corpora.

The subsystem of exercises for differentiated development of prospective teachers’ english-speaking interaction

In the article, the problem of differentiated development of prospective teachers’ English-interaction is investigated. In particular, the subsystem of exercises is presented according to three models: exercises for teaching English dialogue by the method of receptive-cognitive differentiation of learning; exercises for teaching English dialogue by the method of reproductive-cognitive differentiation of learning; exercises for teaching English dialogue by the method of emotional and motivational differentiation of learning. By the three models, the formation of skills and abilities in English dialogic speech includes the following stages: combining cues into dialogic units (with prior or subsequent listening to a sample dialogue), making a mini-dialogue, making the dialogue of a certain functional type. Within each stage, the example of the exercise for the formation of skills and / or abilities in English dialogic speech is given; the purpose of an exercise and its type are singled out; the example of teacher's instruction is attached to each exercise. The focus is in particular on the stages of the implementation of differentiated learning by three types. Thus, receptive-cognitive differentiation is realized at the stage of combining cues into dialogic units with prior and / or subsequent listening to the sample dialogue; reproductive-cognitive differentiation – at the stage of mini-dialogue making; emotional and motivational differentiation – at the stage of making the dialogue of a certain functional type. Teaching aids for the implementation of differentiated teaching of English dialogue for different typological subgroups of students have been developed. In particular, two types of the educational comic strip have been developed (by the dominant type of students' thinking) as a means of implementing reproductive-cognitive differentiation; two types of communicative situations (by the dominant cognitive motives of students) for the implementation of emotional and motivational differentiation of learning are proposed. Examples of educational supports have been introduced.

Modern Acinetobacter baumannii clinical isolates replicate inside spacious vacuoles and egress from macrophages

Multidrug-resistant Acinetobacter baumannii infections are increasing at alarming rates. Therefore, novel antibiotic-sparing treatments to combat these A. baumannii infections are urgently needed. The development of these interventions would benefit from a better understanding of this bacterium’s pathobiology, which remains poorly understood. A. baumannii is regarded as an extracellular opportunistic pathogen. However, research on Acinetobacter has largely focused on common lab strains, such as ATCC 19606, that have been isolated several decades ago. These strains exhibit reduced virulence when compared to recently isolated clinical strains. In this work, we demonstrate that, unlike ATCC 19606, several modern A. baumannii clinical isolates, including the recent clinical urinary isolate UPAB1, persist and replicate inside macrophages within spacious vacuoles. We show that intracellular replication of UPAB1 is dependent on a functional type I secretion system (T1SS) and pAB5, a large conjugative plasmid that controls the expression of several chromosomally-encoded genes. Finally, we show that UPAB1 escapes from the infected macrophages by a lytic process. To our knowledge, this is the first report of intracellular growth and replication of A. baumannii. We suggest that intracellular replication within macrophages may contribute to evasion of the immune response, dissemination, and antibiotic tolerance of A. baumannii.

The cold-drought tolerance trade-off in temperate woody plants constrains range size, but not range filling

Interspecific differences in plant species' ranges are shaped by complex mechanistic interactions, which have so far remained largely beyond the reach of comprehensive models and explanations. Previous attempts to find underlying mechanisms by examining physiological tolerances to cold and heat separately have yielded contradictory results. Here we test the hypothesis that, instead of examining single stressors, abiotic stress tolerance syndromes that involve trade-offs between multiple abiotic stressors (namely drought, cold, waterlogging and shade), will provide reliable explanations. We compiled a dataset of actual range size and range filling (the ratio between actual and potential species range) as range metrics for 331 temperate woody plants species from Europe and North America. Tolerance syndromes were expressed as two PCA axes. One axis reflects a drought-cold/waterlogging tolerance trade-off (cold/wet-drought trade-off), the second axis represents a shade tolerance spectrum. Phylogenetic generalized linear mixed models were used to model the range metric vs. tolerance axes relationships using latitude as an additional main effect, and phylogeny and plant functional type as random effects. Actual range scaled negatively with the cold/wet-drought tolerance trade-off axis, mostly independently of latitude and continent. Thus, cold/wet-tolerant species had the largest ranges and drought tolerant species the smallest. The negative sign of the relationship was independent of phylogeny and plant functional type. In contrast, range filling depended on latitude. However, deciduous and evergreen species displayed different distributions of range metrics and tolerance syndromes. No significant relationships with the shade tolerance spectrum were found. Our findings demonstrate that the cold/wet-drought trade-off partly explains interspecific range size differences. However, this trade-off did not explain range filling. We also showed that fundamental adaptations of species also significantly influence range sizes, stress avoidance through the deciduous habit also explained interspecific differences in range size

Tipe-Tipe Kualitas Perkawinan Orang Yogyakarta

This study aims to explore the types of marital quality. A survey was distributed to 316 participants with the characteristics of having been married for at least five years and identified themselves as people of Yogyakarta, which were obtained purposively. The instrument used marital quality scale which was analyzed quantitatively using cluster analysis. Grouping using cluster analysis was based on indicators of marital quality, namely connectivity, passion, complementarity, mutual respect, mutual acceptance, sharing roles, carrying out the roles with responsibility, harmony, and happiness. The results of the analysis showed that there were three types of marital quality that is happy, functional, and survival type. The happy type is the best quality type that scores above the average population score for all indicators. The second, functional type, has a score below the first type, with variations for each indicator. The third type is the type with the lowest score compared to the other two types.