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Bernhard A. Huber and Anne Chao

Introduction Species are widely considered a fundamental unit in biology, and this explains to a large extent the continuous efforts to estimate species numbers, both globally and at various taxonomic and geographic levels ( Caley et al., 2014 ; Larsen et al., 2017 ). Species richness is a key

Johan van Rooijen

. Species-richness was estimated on the basis of the species accumulation curve (e.g. Colwell & Coddington, 1994 ). In a species-accumulation curve, the cumulative number of species is plotted against a measure of cumulative sampling effort. As sampling-effort increases, the rate at which new species are

Raymond L. Specht, Rhonda I. Grundy and Alison Specht

.L. Climatic control of ecomorphological characters and species richness in mediterranean ecosystems of Australia Mediterranean-type Ecosystems. Specht R.L. Kluwer Academic Publishers Dordrecht 1988 149 155 A Data Source Book Specht R.L. Clifford H.T. The invasion of higher plants into soil seed banks

Eduardo Soto, Marcela Vidal and Alberto Veloso

Amphibia-Reptilia 30 (2009): 151-171 Biogeography of Chilean herpetofauna: distributional patterns of species richness and endemism Marcela A. Vidal 1,2 , ∗ , Eduardo R. Soto 2 , Alberto Veloso 2 Abstract. We analyze the geographic distribution pattern of Chilean amphibian and reptile species

RAN NATHAN and YEHUDAH L. WERNER

gradients in species richness and a spurious Rapoport effect Am. Nat 1994 144 570 595 Conroy M.J. Noon B.R. Mapping of species richness for conservation of biological diversity: conceptual and methodological issues Ecol. Appl 1996 6 763 773 Darlington P.J. Jr. Zoogeography: The geographical

Margaret Schneider, Tom Cribb, Aaron Jex and Harley

Nematology , 2005, Vol. 7(4), 543-575 The Thelastomatoidea (Nematoda: Oxyurida) of two sympatric Panesthiinae (Insecta: Blattodea) from southeastern Queensland, Australia: taxonomy, species richness and host specificity Aaron R. J EX 1 , ∗ , Margaret A. S CHNEIDER 2 , Harley A. R OSE 3 and Tom

Divino Brandão, Rogério Bastos, Márcia De Souza, Cleiber Vieira, Luis Bini, Leandro Oliveira and José Alexandre Diniz-Filho

Spatial patterns in species richness and priority areas for conservation of anurans in the Cerrado region, Central Brazil José Alexandre F. Diniz-Filho 1 , Luis M. Bini 1 , Cleiber M. Vieira 2 , Márcia C. de Souza 3 , Rogério P. Bastos 1 , Divino Brandão 1 , Leandro G. Oliveira 1 1 Departamento

Daniel F.R. Cleary

Parasitoid assemblages infesting Yponomeuta species in the Netherlands were investigated. Parasitoid species richness and community composition were related to host species, habitat, temporal and spatial variation. Both community structure and species richness did not differ among habitats. There was no significant difference in species richness between years (1994 and 1995) but there was a significant difference in community composition. Community composition and species richness both differed among host species, although this latter result was solely due to the host species Y. evonymellus. There was no significant relationship between community similarity and distance. These results indicate that the parasitoids of the moth genus Yponomeuta in the Netherlands appear to form a spatially stable, but temporally variable community. Most of the variation in community structure was, however, related to the host species. The marked difference in parasitoid species richness and community composition of Y. evonymellus when compared to the other species warrants further study.

Alexandre Mestre, Juan S. Monrós and Francesc Mesquita-Joanes

, the entocytherids are an interesting group to analyse issues on host specificity in symbiotic interactions. Georeferenced databases with large-scale geographic ranges are essential in testing one of the most recognised patterns in biogeography: the latitudinal gradient of species richness, which

Mansour Aliabadian, Ronald Sluys, Cees S. Roselaar and Vincent Nijman

Explanation of the spatial distribution patterns in species richness, and especially those of small-ranged species (endemics), bears relevance for studies on evolution and speciation, as well as for conservation management. We test a geometric constraint model, the mid-domain effect (MDE), as a possible explanation for spatial patterns of species richness in Palearctic songbirds (Passeriformes), with an emphasis on the patterns of small-ranged species. We calculated species richness based on digitised distribution maps of phylogenetic species of songbirds endemic to the Palearctic region. Data were plotted and analyzed over a one degree equal area map of the Palearctic Region, with a grid cell area of 4062 km². The emergent biogeographic patterns were analysed with WORLDMAP software. Comparison of the observed richness pattern among 2401 phylogenetic taxa of songbirds in the Palearctic Region with the predictions of a fully stochastic bi-dimensional MDE model revealed that this model has limited empirical support for overall species richness of Palearctic songbirds. Major hotspots were located south of the area where MDE predicted the highest species- richness, while some of the observed coldspots were in the centre of the Palearctic Region. Although small-ranged species are often found in areas with the highest species richness, MDE models have a very restricted explanatory power for the observed species-richness pattern in small-ranged species. Regions with a high number of small-ranged species (endemism hotspots) may contain a unique set of environmental conditions, unrelated to the shape or size of the domain, allowing a multitude of species to co-exist.