Taxonomic diversity and distribution of the genus Proterorhinus (Teleostei: Gobiidae) in the Caucasus biodiversity hotspot with conservation implications

2021 ◽  
Author(s):  
Fatah Zarei ◽  
Hamid Reza Esmaeili ◽  
Ulrich K. Schliewen ◽  
Keyvan Abbasi
Keyword(s):  
Taxonomic Diversity ◽  
Biodiversity Hotspot ◽  
The Caucasus ◽  
Conservation Implications

scholarly journals Taxonomic diversity of spined loaches (Cobitidae: Cobitis) in the Caucasus

2019 ◽  
Vol 6 ◽  
Author(s):  
Ekaterina Vasilyeva ◽  
Evgeniya Solovyeva ◽  
Boris Levin ◽  
Victor Vasil’ev
Keyword(s):  
Taxonomic Diversity ◽  
The Caucasus

A review of mono- and bispecific genera of Amphibians worldwide

2020 ◽  
pp. 47-51
Author(s):  
Giovanni Amori
Keyword(s):  
New York ◽  
Relative Number ◽  
Distribution Patterns ◽  
Taxonomic Diversity ◽  
Neotropical Region ◽  
Iucn Red List ◽  
Red List ◽  
General Tendency ◽  
Conservation Implications ◽  
The Mean

Monospecific and bispecific genera are of particular interest in studies of taxonomic diversity and speciation evolution. Here, the distribution patterns of mono- and bispecific amphibians worldwide are investigated, with some discussion of on the conservation implications also presented. Based on an online database search (available from the American Museum of Natural History, New York), we found that the mean number of mono- and bispecific genera was similar among zoogeographic regions, with a total of 120 mono- (95 Anura, 17 Caudata, 8 Gymnophiona) and 65 bispecific (48 Anura, 10 Caudata, 7 Gymnophiona) genera. Out of 73 known amphibian families worldwide, only 35.6 % of them do not contain any mono- or bispecific genera. The frequency of mono- or bispecific genera by family was not significantly different among Anura, Caudata and Gymnophiona. There was a general tendency for the number of mono- and bispecific genera of amphibians to be positively correlated with the total number of genera in that family. In Anura, there was a preponderance of mono-specific genera in Afrotropical and Neotropical regions. Concerning bispecific genera, there was a clear preponderance in the Neotropical region for anurans. There was a positive correlation between the number of threatened genera (according to the IUCN Red List) in both the mono- and bispecific groups and the relative number of species in each taxon, thus showing that taxonomical speciosity clearly influences the frequency of occurrence of mono- and bispecific taxa in each family and order. In this regard, Anura dominated in both the number of worldwide described mono- and bispecific taxa as well as in that of the threatened ones according to IUCN Red List .

Identifying patterns and drivers of coral diversity in the Central Indo-Pacific marine biodiversity hotspot

Paleobiology ◽  
2017 ◽  
Vol 43 (3) ◽  
pp. 343-364 ◽  
Author(s):  
Morana Mihaljević ◽  
Chelsea Korpanty ◽  
Willem Renema ◽  
Kevin Welsh ◽  
John M. Pandolfi
Keyword(s):  
Functional Diversity ◽  
New Taxa ◽  
Environmental Changes ◽  
Taxonomic Diversity ◽  
Biodiversity Hotspot ◽  
Marine Biodiversity ◽  
Biodiversity Hotspots ◽  
Tropical Biodiversity ◽  
Suitable Habitats ◽  
Global Sea Level

AbstractBiodiversity hotspots are increasingly recognized as areas of high taxonomic and functional diversity. These hotspots are dynamic and shift geographically over time in response to environmental change. To identify drivers of the origin, evolution, and persistence of diversity hotspots, we investigated the diversity patterns of reef-building corals (Scleractinia) in the Central Indo-Pacific, a marine biodiversity hotspot for the last 25 Myr. We used the scleractinian fossil record (based on literature and a newly acquired fossil collection) to examine the taxonomic and functional diversity of corals from the Eocene to Pliocene. Our data identify potential drivers of coral diversity through time (and space) in the Central Indo-Pacific by constraining the timing of taxonomic turnover events and correlating them with known environmental changes. Increases in taxonomic diversity, high origination rates, and changes in abundance of functional character states indicate that the origin of the Central Indo-Pacific hotspot occurred during the Oligocene, initially through proliferation of pre-existing taxa and then by origination of new taxa. In contrast to taxonomic diversity, overall functional diversity of Central Indo-Pacific reef-building corals remained constant from the Eocene to the Pliocene. Our results identify global sea level as a main driver of diversity increase that, together with local tectonics, regulates availability of suitable habitats. Moreover, marine biodiversity hotspots develop from both the accumulation of taxa from older biodiversity hotspots and origination of new taxa. Our study demonstrates the utility of a combined literature-based and new collection approach for gaining new insights into the timing, drivers, and development of tropical biodiversity hotspots.

Integrative taxonomic investigation of Petaurus breviceps (Marsupialia: Petauridae) reveals three distinct species

2020 ◽  
Author(s):  
Teigan Cremona ◽  
Andrew M Baker ◽  
Steven J B Cooper ◽  
Rebecca Montague-Drake ◽  
Alyson M Stobo-Wilson ◽  
...  
Keyword(s):  
Phylogenetic Analyses ◽  
Taxonomic Diversity ◽  
Distinct Species ◽  
Morphological Evidence ◽  
Northern Australia ◽  
Conservation Implications ◽  
Sugar Glider ◽  
Taxonomic Approach ◽  
Morphological Differences ◽  
Petaurus Breviceps

Abstract The Australian sugar glider, Petaurus breviceps s.l., is widely distributed across eastern and northern Australia. Examination of historical and contemporary collections of Petaurus specimens and phylogenetic analyses have revealed considerable taxonomic diversity within the genus. We aimed to utilize an integrative taxonomic approach, combining genetic and morphological evidence, to resolve the taxonomy of Australian gliders currently recognized as Petaurus breviceps. Herein, we confirm the existence of three distinct species: P. breviceps, P. notatus comb. nov. and P. ariel comb. nov.. Petaurus breviceps and P. notatus are each represented by major mtDNA lineages in P. breviceps, while P. ariel forms a sister-lineage to P. norfolcensis and P. gracilis. Subtle morphological differences distinguish P. breviceps from the closely related P. notatus, while the morphological distinctions between P. ariel and its genetically similar sister-taxa, P. norfolcensis and P. gracilis, are more obvious. Given the purported broad geographic distribution of the taxon, P. breviceps s.l. was not listed as threatened, but dividing this taxon into three species has important conservation implications for all taxa in the group, particularly given the lamentable record for mammal extinctions in Australia. Concerted and targeted conservation efforts are necessary to preserve these distinct, newly described species.

scholarly journals Taxonomic analysis of bryofloristic complexes of Eastern Europe

2021 ◽  
Vol 66 (4) ◽  
pp. 433-443
Author(s):  
O. M. Maslovsky
Keyword(s):  
Species Diversity ◽  
Eastern Europe ◽  
Taxonomic Diversity ◽  
Alpine Region ◽  
General Nature ◽  
The Urals ◽  
The West ◽  
The Caucasus ◽  
Taxonomic Analysis ◽  
Specific Species

To assess the spatial distribution of bryophyte species in Eastern Europe, more than 53,000 localities of 1296 species were analyzed in 397 squares of 100×100 km. In terms of frequency of occurrence, rare species (from 6 to 25 squares) and very rare (from 1 to 5 squares) prevail in Eastern Europe. It was shown that more than 60 % of the taxonomic diversity of bryophytes is in a threatened or close to threatened state in the region. Based on biogeographic zoning, 6 regions (alpine, arctic, boreal, nemoral, arid, subtropical) and 12 subregions were identified. The characteristics of the taxonomic diversity of bryophyte regions and subregions are given, specific species are given and the centers of concentration of bryophyte species diversity in Eastern Europe are identified. There are 162 species in only one subregion, and 68 bryophyte taxa are found in all regions and subregions. The maximum species diversity is observed in the Alpine region (1066 species), which is explained by the general nature of the biological characteristics of bryophytes, the variety of ecological conditions in this region and the presence in Eastern Europe of 4 geographically different mountain subregions: the west of the Kola Peninsula, the Urals, the Carpathians and the foothills of the Caucasus.

scholarly journals Density and distribution of a brown bear (Ursus arctos) population within the Caucasus biodiversity hotspot

2018 ◽  
Vol 99 (5) ◽  
pp. 1249-1260 ◽  
Author(s):  
A Cole Burton ◽  
Jason T Fisher ◽  
Peter Adriaens ◽  
Jo Treweek ◽  
David Paetkau ◽  
...  
Keyword(s):  
Ursus Arctos ◽  
Brown Bear ◽  
Biodiversity Hotspot ◽  
The Caucasus

Allocybaeina littlewalteri (Araneae: Cybaeidae): a new genus and species endemic to northwestern California

Zootaxa ◽  
2020 ◽  
Vol 4845 (3) ◽  
pp. 436-446
Author(s):  
ROBB BENNETT ◽  
CLAUDIA COPLEY ◽  
DARREN COPLEY
Keyword(s):  
North America ◽  
Small Area ◽  
New Genus ◽  
Biodiversity Hotspot ◽  
Distribution Map ◽  
New Genus And Species ◽  
The West ◽  
Conservation Implications ◽  
Coastal Watersheds ◽  
Northern Portion

Various undescribed Cybaeina Chamberlin & Ivie (Araneae: Dictynoidea: Cybaeidae) and Cybaeina-like taxa are known from forested habitats in the west coast of North America. Most have very restricted ranges within the northern portion of the Californian Floristic Province, a well-known biodiversity hotspot. Here we describe Allocybaeina Bennett gen. nov. and its single included species, Allocybaeina littlewalteri Bennett spec. nov. This infrequently collected species is restricted to forested habitat in a small area of the coastal watersheds of southern Humboldt and western Mendocino Counties in northwestern California, U.S.A. In addition to descriptions we provide diagnoses, illustrations, a distribution map, and discuss conservation implications for this distinctive new genus and species. 

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