Evidence for a Time-Integrated Species-Area Effect on the Latitudinal Gradient in Tree Diversity

2006 ◽  
Vol 168 (6) ◽  
pp. 796
Author(s):  
Paul V. A. Fine ◽  
Ree
Keyword(s):  
Latitudinal Gradient ◽  
Tree Diversity ◽  
Area Effect ◽  
Species Area

scholarly journals Controlling for the species-area effect supports constrained long-term Mesozoic terrestrial vertebrate diversification

2017 ◽  
Vol 8 (1) ◽  
Author(s):  
Roger A. Close ◽  
Roger B.J. Benson ◽  
Paul Upchurch ◽  
Richard J. Butler
Keyword(s):  
Area Effect ◽  
Terrestrial Vertebrate ◽  
Species Area

scholarly journals Conservation Biogeography of Tenebrionid Beetles: Insights from Italian Reserves

Diversity ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 348 ◽  
Author(s):  
Simone Fattorini
Keyword(s):  
Species Richness ◽  
Latitudinal Gradient ◽  
Important Determinant ◽  
Elevational Gradient ◽  
Negative Influence ◽  
Species Dispersal ◽  
Conservation Biogeography ◽  
Extinction Rates ◽  
Species Area ◽  
Using Data

The species-area relationship (SAR), the latitudinal gradient, the peninsula effect, and the elevational gradient are widespread biogeographical patterns. Using data from Italian reserves, these patterns were tested for tenebrionids and used as a framework to calculate expected extinction rates following area loss. Area was an important determinant of overall tenebrionid species richness, but not for xylophilous and endemic species. Thus, focusing on reserve areas is not the best approach for conserving insects with specialised ecology and restricted distribution. In general, species richness declined northwards, which contrasts with the peninsula effect, but conforms to the European latitudinal pattern observed in most taxa because of current and past biogeographical factors. Minimum elevation had an overall negative influence, as most tenebrionids are thermophilic. However, xylophilous tenebrionids, which are mainly associated with mesophilic forests, did not decline northwards, and were positively influenced by higher elevational ranges that allow more forms of vegetation. SAR-based extinction rates reflect species dispersal capabilities, being highest for geophilous species (which are mainly flightless), and lower for the xylophilous species. Extinction rates based on multiple models indicate that the use of area alone may overestimate extinction rates, when other factors exert an important role in determining species richness.

The Latitudinal Gradient of Species‐Area Relationships for Vascular Plants of North America

2007 ◽  
Vol 170 (5) ◽  
pp. 690-701 ◽  
Author(s):  
Hong Qian ◽  
Jason D. Fridley ◽  
Michael W. Palmer
Keyword(s):  
North America ◽  
Vascular Plants ◽  
Latitudinal Gradient ◽  
Species Area

scholarly journals Tree diversity patterns along the latitudinal gradient in the northwestern Russia

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
Elena Tikhonova ◽  
Gleb Tikhonov ◽  
Nikolay Shevchenko ◽  
Svetlana Knyazeva ◽  
Alexandra Plotnikova ◽  
...  
Keyword(s):  
Latitudinal Gradient ◽  
Tree Diversity ◽  
Diversity Patterns ◽  
Northwestern Russia

The family Orthotrichaceae (Bryophyta) in flora of Russia: results of revision and biogeographical review

2018 ◽  
Vol 52 (2) ◽  
pp. 519-534 ◽  
Author(s):  
V. E. Fedosov
Keyword(s):  
Hot Spots ◽  
Latitudinal Gradient ◽  
Hot Spot ◽  
Spatial Differentiation ◽  
Taxonomic Composition ◽  
Undescribed Species ◽  
Longitudinal Gradient ◽  
Biogeographic Pattern ◽  
The Family ◽  
North Pacific Region

Recent studies on Orthotrichoid mosses in Russia are summarized genus by genus. Orthotrichum furcatum Otnyukova is synonymized with Nyholmiella obtusifolia. Orthotrichum vittii is excluded from the Russian moss flora. Description of O. dagestanicum is amended. Fifty four currently recognized species from 9 genera of the Orthotrichaceae are presently known to occur in Russia; list of species with common synonyms and brief review of distribution in Russia is presented. Numerous problematic specimens with unresolved taxonomy were omitted for future. Revealed taxonomical inconsistencies in the genera Zygodon, Ulota, Lewinskya, Nyholmiella, Orthotrichum are briefly discussed. Main regularities of spatial differentiation of the family Orthotrichaceae in Russia are considered. Recently presented novelties contribute to the certain biogeographic pattern, indicating three different centers of diversity of the family, changing along longitudinal gradient. Unlike European one, continental Asian diversity of Orthotrichaceae is still poorly known, the Siberian specimens which were previously referred to European species in most cases were found to represent other, poorly known or undescribed species. North Pacific Region houses peculiar and poorly understood hot spot of diversity of Orthotrichoid mosses. Thus, these hot spots are obligatory to be sampled in course of revisions of particular groups, since they likely comprise under-recorded cryptic- or semi-cryptic species. Latitudinal gradient also contributes to the spatial differentiation of the revealed taxonomic composition of Orthotrichaceae.

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