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Abstract Estuaries are used by waterbirds as foraging, resting and nesting sites, serving also as shelter for migratory birds. The dynamics of this avifauna in an aquatic environment may be associated with the differences of time of day, tide height, temperature, wind speed and use of the site by different species. This study had the objective of evaluating behavioral aspects of aquatic birds, relating the influence of environmental variables with their activities. Bird counts were performed at the mouth of two important rivers of the state of Santa Catarina, Brazil, during two-hour intervals throughout the day in monthly samplings between June (2015) and May (2016). A total of 44 species were recorded, ten of which were migratory. The most recorded behaviors were foraging and resting. The Kruskal-Wallis analysis indicated no significant difference in behavior between the sampling intervals. The Bray-Curtis similarity test resulted in three groups: 1) - species that foraged most of the time; 2) - species that rested most of the time; and 3) - same time in both activities. The Indicator Species Analysis showed that 17 species were associated with only one microhabitat and 15 species with more than one. The Canonical Correlation Analysis indicated that only tide height, temperature and rainfall variables were correlated with the behaviors performed and only the resting activity was positively correlated with all variables. This may be associated with thermoregulation and the ability of some species to stay in midlitoral at high tide. The results demonstrate that different waterbird species used the studied areas in different ways. Thus, the heterogeneity of microhabitats in an aquatic environment of extreme importance for the coexistence and maintenance of the diversity of waterbirds.

Introduction. The paper deals with the concepts of a term and terminology as they considered both in classical general theory of terminology and cognitive linguistics. The field of English economic terminology provides extensive material for the terminologists to develop and clarify theoretical guidelines helping to understand the nature of scientific and professional nominations that constitute the aim of presented reseach. The processes of term formation viewed through the cognitive approach are considered in connection with conceptualization and categorization and help to reveal the creative nominative models of marketers as it is seen vital within an antropocentric focus of linguistic studies.Methodology and sources. A general theory of terminology is based upon the approach in which the nature of concepts, conceptual relations, the relationships between terms and concepts and assigning terms to concepts are of prime importance. But in fact, terminology is closely linked to an activity carried out within the field of knowledge and thus it is inseparable from its social context and its obvious applications. Methods of cognitive analysis applied for the study of terminilogies are supposed to overcome contradictions of the previous century of terminology studies. English marketing terms under consideration were extracted from the professional dictionaries and handbooks. The thematic group chosen as the illustrative example is consumer terminological group.Results and discussion. Nominative originality of marketing terminology has been revealed within the idea of continually changing specific autonomous and self-sufficient consumer models reflected in micro-systems of terms nominating and verbalizing holistic concepts of the authors. Nomination of the typical individuals (customers) by the terms discussed in the presented paper reflects deep and various psychological characteristics of individuals. As it seems, all these parameters form the foundation of the professional domain of modern markets in accordance with the existing conceptual knowledge, verbalized by terms.Conclusion. The study is relevant since the research of conceptualization and categorization in the professional fields of knowledge seems to be an understudied area. The more interdisciplinary is the area of professional knowledge, the more integrated are specific features of terminological nomination, and the more sophisticated is the termformation used by the experts.