scholarly journals Spatial Factors Play a Major Role as Determinants of Endemic Ground Beetle Beta Diversity of Madeira Island Laurisilva

PLoS ONE ◽  
2013 ◽  
Vol 8 (5) ◽  
pp. e64591 ◽  
Author(s):  
Mário Boieiro ◽  
José C. Carvalho ◽  
Pedro Cardoso ◽  
Carlos A. S. Aguiar ◽  
Carla Rego ◽  
...  
Keyword(s):  
Beta Diversity ◽  
Ground Beetle ◽  
Spatial Factors ◽  
Madeira Island

scholarly journals Hydrological and environmental variables outperform spatial factors in structuring species, trait composition, and beta diversity of pelagic algae

2018 ◽  
Vol 8 (5) ◽  
pp. 2947-2961 ◽  
Author(s):  
Naicheng Wu ◽  
Yueming Qu ◽  
Björn Guse ◽  
Kristė Makarevičiūtė ◽  
Szewing To ◽  
...  
Keyword(s):  
Beta Diversity ◽  
Environmental Variables ◽  
Spatial Factors ◽  
Species Trait ◽  
Pelagic Algae

A new species of Orthomus Chaudoir, 1838 (Coleoptera: Carabidae) from Madeira island (Macaronesia) and notes on related species

Zootaxa ◽  
2009 ◽  
Vol 1972 (1) ◽  
pp. 20-34 ◽  
Author(s):  
ARTUR R. M. SERRANO ◽  
CARLOS A. S. AGUIAR ◽  
MÁRIO C. BOIEIRO ◽  
PAULO A. V. BORGES ◽  
CARLA REGO ◽  
...  
Keyword(s):  
New Species ◽  
Related Species ◽  
Male Genitalia ◽  
Ground Beetle ◽  
Pitfall Traps ◽  
Beetle Species ◽  
Diagnostic Characters ◽  
Madeira Island ◽  
Island Type ◽  
A New Species

The present study describes a new ground-beetle species (Coleoptera, Carabidae) from Madeira island (type localities: FANAL and RIBEIRO BONITO), Orthomus (Nesorthomus) susanae Serrano & Borges, n. sp. Adults were sampled by means of pitfall traps. This work provides diagnostic characters, in particular the structure of male genitalia, and the distribution of this new species. Affinities to putative relatives and a key for the identification of males of the eight Orthomus (Nesorthomus) species of the Madeira island are also given.

Beta diversity of rock-restricted cichlid fishes in Lake Malawi: importance of environmental and spatial factors

Ecography ◽  
2004 ◽  
Vol 27 (5) ◽  
pp. 601-610 ◽  
Author(s):  
M. J. Genner ◽  
M. I. Taylor ◽  
D. F. R. Cleary ◽  
S. J. Hawkins ◽  
M. E. Knight ◽  
...  
Keyword(s):  
Beta Diversity ◽  
Lake Malawi ◽  
Spatial Factors ◽  
Cichlid Fishes

Local environmental factors influence beta‐diversity patterns of tropical fish assemblages more than spatial factors

Ecology ◽  
2019 ◽  
Vol 101 (2) ◽  
Author(s):  
Edwin O. López‐Delgado ◽  
Kirk O. Winemiller ◽  
Francisco A. Villa‐Navarro
Keyword(s):  
Environmental Factors ◽  
Beta Diversity ◽  
Fish Assemblages ◽  
Tropical Fish ◽  
Spatial Factors ◽  
Diversity Patterns

Patterns of beta diversity in riparian ground beetle assemblages (Coleoptera Carabidae): A case study in the River Aniene (Central Italy)

2012 ◽  
Vol 79 (1) ◽  
pp. 136-150 ◽  
Author(s):  
Sara Baiocchi ◽  
Simone Fattorini ◽  
Paolo Bonavita ◽  
Augusto Vigna Taglianti
Keyword(s):  
Beta Diversity ◽  
Ground Beetle ◽  
Central Italy ◽  
Beetle Assemblages

Macrophyte life forms influence the effects of environmental and spatial factors on the beta-diversity of associated ostracod communities (Crustacea)

2021 ◽  
Vol 83 (2) ◽  
Author(s):  
Ramiro de Campos ◽  
Jonathan Rosa ◽  
Vitor Góis Ferreira ◽  
Eliezer de Oliveira da Conceição ◽  
Koen Martens ◽  
...  
Keyword(s):  
Beta Diversity ◽  
Life Forms ◽  
Spatial Factors

Socio-Economic Characteristics of Immigrants in Western Greece Region: Urban – Rural Continuum or Divide?

2006 ◽  
Vol 3 (2) ◽  
pp. 91-105 ◽  
Author(s):  
Theodoros Iosifides ◽  
Thanasis Kizos ◽  
Elektra Petracou ◽  
Ekaterini Malliotaki ◽  
Konstantina Katsimantou ◽  
...  
Keyword(s):  
Rural Areas ◽  
Urban Centers ◽  
Spatial Factors ◽  
Limited Role ◽  
Urban Rural ◽  
Of Greece ◽  
Western Greece

This paper aims at an investigation of factors of differentiation of basic social and economic characteristics of foreign immigrants in the Region of Western Greece. The paper explores whether the thesis of urban-rural divide is relevant for the differentiation of immigrants’ socio-economic characteristics in a typical Region of Greece, where there is a strong interplay between major urban centers and large rural areas. Findings show that spatial factors play a very limited role in the differentiation of socio-economic characteristics of immigrants and indicate that other factors are more important. Thus, and as regards socio-economic characteristics of immigrants, the overall picture is that of urban-rural continuum rather than divide. 

Scale sensitivity of environmental effects on the temporal beta diversity of fishes in tropical coastal lagoons

2020 ◽  
Author(s):  
E Martins Camara ◽  
Tubino Andrade Andrade-Tub ◽  
T Pontes Franco ◽  
LN dos Santos ◽  
AFGN dos Santos ◽  
...  
Keyword(s):  
Environmental Effects ◽  
Beta Diversity ◽  
Coastal Lagoons ◽  
Scale Sensitivity ◽  
Temporal Beta Diversity

Kyiv park "Nivki" and "Teremki" forests and ecological analysis of their habitats

2014 ◽  
Vol 25 (3-4) ◽  
pp. 53-68
Author(s):  
I. V. Goncharenko ◽  
H. M. Holyk
Keyword(s):  
Standard Deviation ◽  
Species Composition ◽  
Human Impact ◽  
Soil Nitrogen ◽  
Beta Diversity ◽  
Plant Cover ◽  
Alpha Diversity ◽  
Light Regime ◽  
Individual Species ◽  
Anthropogenic Pressure

Cenotic diversity and leading ecological factors of its floristic differentiation were studied on an example of two areas – Kyiv parks "Nivki" and "Teremki". It is shown that in megalopolis the Galeobdoloni-Carpinetum impatientosum parviflorae subassociation is formed under anthropogenic pressure on the typical ecotope of near-Dnieper hornbeam oak forests on fresh gray-forest soils. The degree of anthropogenic transformation of cenofloras can be estimated by the number of species of Robinietea and Galio-Urticetea classes, as well as neophytes and cultivars. Phytoindication for hemeroby index may be also used in calculation. We propose the modified index of biotic dispersion (normalized by alpha-diversity) for the estimation of ecophytocenotic range (beta-diversity) of releves series. We found that alpha-diversity initially increases (due to the invasion of antropophytes) at low level of antropogenic pressure, then it decreases (due to the loss of aboriginal species) secondarily with increasing of human impact. Also we found that beta-diversity (differential diversity) decreases, increasing homogeneity of plant cover, under the influence of anthropogenic factor. Vegetation classification was completed by a new original method of cluster analysis, designated as DRSA («distance-ranked sorting assembling»). The classification quality is suggested to be validated on the "seriation" diagram, which is а distance matrix between objects with gradient filling. Dark diagonal blocks confirm clusters’ density (intracluster compactness), uncolored off-diagonal blocks are evidence in favor of clusters’ isolation (intercluster distinctness). In addition, distinction of clusters (syntaxa) in ordination area suggests their independence. For phytoindication we propose to include only species with more than 10% constancy. Furthermore, for the description of syntaxonomic amplitude we suggest to use 25%-75% interquartile scope instead of mean and standard deviation. It is shown that comparative analysis of syntaxa for each ecofactor is convenient to carry out by using violin (bulb) plots. A new approach to the phytoindication of syntaxa, designated as R-phytoindication, was proposed for our study. In this case, the ecofactor values, calculated for individual releves, are not taken into account, however, the composition of cenoflora with species constancies is used that helps us to minimize for phytoindication the influence of non-typical species. We suggested a syntaxon’s amplitude to be described by more robust statistics: for the optimum of amplitude (central tendency) – by a median (instead of arithmetic mean), and for the range of tolerance – by an interquartile scope (instead of standard deviation). We assesses amplitudes of syntaxa by phytoindication method for moisture (Hd), acidity (Rc), soil nitrogen content (Nt), wetting variability (vHd), light regime (Lc), salt regime (Sl). We revealed no significant differences on these ecofactors among ecotopes of our syntaxa, that proved the variant syntaxonomic rank for all syntaxa. We found that the core of species composition of our phytocenoses consists of plants with moderate requirements for moisture, soil nitrogen, light and salt regime. We prove that the leading factor of syntaxonomic differentiation is hidden anthropogenic, which is not subject to direct measurement. But we detect that hidden factor of "human pressure" was correlated with phytoindication parameters (variables) that can be measured "directly" by species composition of plant communities. The most correlated factors were ecofactors of soil nitrogen, wetting variability, light regime and hemeroby. The last one is the most indicative empirically for the assessment of "human impact". We establish that there is a concept of «hemeroby of phytocenosis» (tolerance to human impact), which can be calculated approximately as the mean or the median of hemeroby scores of individual species which are present in it.

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