scholarly journals Functional differences between fish communities on artificial and natural reefs: a case study along the French Catalan coast

2014 ◽  
Vol 20 (3) ◽  
pp. 219-234 ◽  
Author(s):  
B Koeck ◽  
A Tessier ◽  
A Brind’Amour ◽  
J Pastor ◽  
B Bijaoui ◽  
...  
Keyword(s):  
Fish Communities ◽  
Functional Differences ◽  
Catalan Coast ◽  
Natural Reefs

The Interpretation of Archaeological Floor Assemblages: A Case Study from the American Southwest

1998 ◽  
Vol 63 (4) ◽  
pp. 617-634 ◽  
Author(s):  
Michael W. Diehl
Keyword(s):  
Social Groups ◽  
American Southwest ◽  
Formation Processes ◽  
Functional Differences

Analyses of the assemblages from the floors of Upland Mogollon pithouses show that variation in artifact frequencies may be attributed to differences in the intensity of abandonment and post-abandonment formation processes, such as caching, scavenging and trash dumping. The proportion of pithouses that contain caches or de facto assemblages is provocatively constant across sites—roughly 18 percent. This observation may be useful for refining estimates of the populations of sites or regions, for recognizing the size of social groups, or for identifying the abandonment sequences of pithouse villages. Prior studies that attribute variation in the frequencies of different classes of artifacts to functional differences in the uses of pithouses are rejected on the grounds of methodological inadequacy.

scholarly journals Predicting voice choice in symmetrical voice languages

2021 ◽  
Author(s):  
Sonja Riesberg ◽  
Maria Bardají i Farré ◽  
Kurt Malcher ◽  
Nikolaus P. Himmelmann
Keyword(s):  
Spoken Discourse ◽  
Functional Differences ◽  
Structural Differences ◽  
Symmetrical Voice ◽  
Voice Systems

Abstract Western Austronesian symmetrical voice languages exhibit at least two basic transitive constructions. This paper investigates what factors influence speakers’ choice of one voice over another in natural spoken discourse. It provides a thorough assessment of all factors that have been proposed to be relevant for voice choice in the literature on symmetrical voice systems. Using the Indonesian language Totoli as a case study, we show that unlike in languages with asymmetrical voice alternations, argument-related properties such as topicality, activation state, animacy, etc. do not play a major role in voice choice in symmetrical voice languages. We argue that for symmetrical voice alternations other factor groups are relevant than for asymmetrical voice alternations and that the clear structural differences between the two alternation types are mirrored in functional differences.

scholarly journals Relationship between urban tourism traffic and tourism land use: A case study of Xiamen Island

2021 ◽  
Vol 14 (1) ◽  
pp. 761-776
Author(s):  
Yueer Gao ◽  
Yanqing Liao ◽  
Donggen Wang ◽  
Yongguang Zou
Keyword(s):  
Land Use ◽  
Urban Tourism ◽  
Linear Regression Models ◽  
The Sustainable Development ◽  
Functional Differences ◽  
Period 2 ◽  
Considerable Impact ◽  
The Impact ◽  
The Relationship

The development of tourism leads to changes in land-use demands and patterns, which are complex and dynamic, in tourist cities. Functional differences in land use produce different travel needs and have different impacts on traffic, especially on tourism. This paper explores the relationship between tourism land use and tourism traffic. Taking Xiamen Island as an example, using multivariable linear regression models, tourism land use is divided into accommodation land use, shopping land use and restaurant land use as the independent variables of the model; and the origin-destination (OD) density of traffic analysis zones (TAZs) during National Day in 2018 (October 1 to 5) is chosen as the dependent variable. To compare the different impacts between tourism land use and tourism traffic during the tourism and non-tourism periods, the non-tourism period (March 11 to 15) is further studied. The results show the following: (1) Xiamen, as a tourism city, has not only regular traffic but also tourism traffic, and traffic during the tourism period is totally different than that in the non-tourism period. (2) Tourism land use has a considerable impact on both tourism traffic and non-tourism traffic, but the impact is greater during the tourism period than the non-tourism period. (3) In the morning peak hour of both the tourism period and the non-tourism period, accommodation land use shows prominent effects on traffic. In the evening peak hour, shopping land use significantly impacts traffic. The study provides a basis for urban tourism land use adjustment to achieve the sustainable development of tourism traffic.

scholarly journals Testing the performance of environmental DNA metabarcoding for surveying highly diverse tropical fish communities: A case study from Lake Tanganyika

2019 ◽  
Vol 2 (1) ◽  
pp. 24-41 ◽  
Author(s):  
Christopher J. Doble ◽  
Helen Hipperson ◽  
Walter Salzburger ◽  
Gavin J. Horsburgh ◽  
Chacha Mwita ◽  
...  
Keyword(s):  
Lake Tanganyika ◽  
Fish Communities ◽  
Environmental Dna ◽  
Tropical Fish ◽  
Dna Metabarcoding

scholarly journals eDNA metabarcoding as a means to assess distribution of subterranean fish communities: Iranian blind cave fishes as a case study

2021 ◽  
Author(s):  
Iraj Hashemzadeh Segherloo ◽  
Seyedeh Narjes Tabatabaei ◽  
Eisa Abdolahi‐Mousavi ◽  
Cecilia Hernandez ◽  
Eric Normandeau ◽  
...  
Keyword(s):  
Fish Communities ◽  
Blind Cave ◽  
Cave Fishes

scholarly journals Influence of Coral Architecture on Species Richness and the Hierarchical Structuration of Species Abundances in Reef Fish Communities: A Case Study in the Eastern Tropical Pacific

2019 ◽  
pp. 1-21
Author(s):  
Jean Béguinot
Keyword(s):  
Species Richness ◽  
Fish Community ◽  
Fish Communities ◽  
Total Species Richness ◽  
Species Abundances ◽  
Hierarchical Structuring ◽  
Complex Architecture ◽  
Total Species

The role of coral reef architecture on species richness and the internal structuration of the associated fish communities has already been addressed several times. The reported results, however, usually remain controversial, possibly because they are based upon incomplete field data issued from partial inventories. Indeed, incomplete samplings are almost unavoidable in practice with such species-rich communities having very uneven distribution of abundances. In this context, the numerical extrapolation of incompletely sampled communities may serve as a reliable surrogate. Accordingly, numerical extrapolations were implemented, here, to compare two fish-communities respectively associated to coral reefs that sharply differ from each-other by their topographic architectures. Both a higher total species richness and a sharper unevenness of species abundances were found to characterize the fish community associated to the more tormented reef habitat exhibiting the more complex architecture. Yet, paradoxically, the true intensity of the underlying process of hierarchical structuring of abundances proves being insensitive to the architecture of coral habitats. This apparent opposition between the unevenness pattern and the underlying structuring process results, in fact, from the additional negative dependence of abundance unevenness upon species richness.

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