scholarly journals New bird records for the Serranía de Las Quinchas, Colombia: inventory update and comments on distributions in an altitudinal gradient

Check List ◽  
2020 ◽  
Vol 16 (6) ◽  
pp. 1475-1518
Author(s):  
Juan S. García-Monroy ◽  
Óscar E. Morales-González ◽  
Juan E. Carvajal‑Cogollo
Keyword(s):  
Species Richness ◽  
Altitudinal Gradient ◽  
Critically Endangered ◽  
Tropical Region ◽  
Mountain Range

The diversity of birds in the Las Quinchas mountain range amounted to 374 taxa in 2007, most of them distributed in the tropical region of the massif. We made five sampling trips between March and October 2019 to different locations in the Tropical and Sub-Andean regions of Las Quinchas, we added 11 species increasing in 3% the avian richness of the mountains. The 383 species are distributed in 55 families and 22 orders. One species is categorized as Critically Endangered and four are the Vulnerable. There was greater species richness in the upper part of the mountains and low turnover between altitude ranges.

scholarly journals Do Shapes of Elevational Gradients of Species Richness Depend on the Vertical Range Studied? The Case of the Himalayas

2022 ◽  
Author(s):  
Jatishwor Singh Irungbam ◽  
Alena Bartoňová Sucháčková ◽  
Martin Konvička ◽  
Zdenek Faltýnek Fric
Keyword(s):  
Species Richness ◽  
Correspondence Analysis ◽  
Canonical Correspondence Analysis ◽  
Altitudinal Gradient ◽  
Mountain Range ◽  
Elevational Gradients ◽  
Elevation Range ◽  
Vertical Range ◽  
Maximum Elevation ◽  
Elevational Range

Abstract We retrieved shapes of elevational species richness gradients (unimodal, decreasing, increasing) from 64 publications, studying Himalayan elevation patterns. We covered both plants and animals, and tested the hypothesis that unimodal gradients, explicable by the geometric mid-domain effect, prevail in the mountains, whereas decreasing or increasing gradients result from studying only short sections of entire altitudinal ranges. Multivariate canonical correspondence analysis was used to relate gradient shapes to their altitude ranges, geography positions, and taxa studied. Across taxa, most of the Himalayan altitudinal gradient display a unimodal shape, with a peak of diversity situated at ca 2500 m a.s.l. for plants, and 2200 m a.s.l. for animals. The gradient shapes were attributable to three intercorrelated predictors: vertical range, maximum elevation, and mean elevation of the gradients. Studies covering sufficiently broad altitudinal range returned unimodal gradients. Studies from the Earth’s highest mountain range reveal that surveys covering substantial parts of the elevational range of the mountains result in unimodal elevational gradients, whereas declining or increasing species richness gradients result from incomplete elevation range sampling.

scholarly journals Bryophyte Species Richness and Composition along an Altitudinal Gradient in Gongga Mountain, China

PLoS ONE ◽  
2013 ◽  
Vol 8 (3) ◽  
pp. e58131 ◽  
Author(s):  
Shou-Qin Sun ◽  
Yan-Hong Wu ◽  
Gen-Xu Wang ◽  
Jun Zhou ◽  
Dong Yu ◽  
...  
Keyword(s):  
Species Richness ◽  
Altitudinal Gradient ◽  
Gongga Mountain

Distribution of moss-inhabiting diatoms along an altitudinal gradient at sub-Antarctic Îles Kerguelen

2007 ◽  
Vol 19 (1) ◽  
pp. 17-24 ◽  
Author(s):  
Niek J.M. Gremmen ◽  
Bart van de Vijver ◽  
Yves Frenot ◽  
Marc Lebouvier
Keyword(s):  
Species Richness ◽  
Species Composition ◽  
Altitudinal Gradient ◽  
Cross Validation ◽  
Strong Relationship ◽  
Distribution Patterns ◽  
Common Species ◽  
Important Variable ◽  
Diatom Species ◽  
Expected Species Richness

Altitudinal gradients provide excellent opportunities to study relationships between species distribution and climatic variables. We studied the species composition of 39 samples of moss-inhabiting diatoms, collected at 50 m intervals from 100–650 m above sea level. The samples contained a total of 130 diatom species, of which 51 occurred in 10 or more samples. Altitude appeared to be the most important variable explaining variation in species composition. Of the 51 common species, 33 showed a significant relationship with altitude. Although the majority of the latter declined with increasing altitude, for nine species the probability of occurrence first increased with increasing elevation, but decreased again at higher altitudes, and four species increased systematically with elevation. As a result, expected species richness per sample decreased from an estimated 43 at 100 m to 25 species per sample at 650 m. Diatom distribution patterns proved to be suitable predictors of the altitudinal position of sample sites. Cross-validation yielded a strong relationship between predicted and observed altitudes.

scholarly journals Species Richness of Aquatic Insects in Wetlands along the Altitudinal Gradient in Jeju, Korea : Test of Rapoport's Rule

2010 ◽  
Vol 49 (3) ◽  
pp. 175-185 ◽  
Author(s):  
Sang-Bae Jeong ◽  
Dong-Soon Kim ◽  
Hyeong-Sik Jeon ◽  
Kyoung-Sik Yang ◽  
Won-Taek Kim
Keyword(s):  
Species Richness ◽  
Aquatic Insects ◽  
Altitudinal Gradient ◽  
Rapoport’S Rule

Species richness and trait composition of butterfly assemblages change along an altitudinal gradient

Oecologia ◽  
2014 ◽  
Vol 175 (2) ◽  
pp. 613-623 ◽  
Author(s):  
Annette Leingärtner ◽  
Jochen Krauss ◽  
Ingolf Steffan-Dewenter
Keyword(s):  
Species Richness ◽  
Altitudinal Gradient ◽  
Butterfly Assemblages

scholarly journals Species Richness, Abundance and Functional Diversity of a Bat Community along an Elevational Gradient in the Espinhaço Mountain Range, Southeastern Brazil

2018 ◽  
Vol 20 (1) ◽  
pp. 129 ◽  
Author(s):  
Eduardo De Rodrigues Coelho ◽  
Adriano Pereira Paglia ◽  
Arleu Barbosa Viana-Junior ◽  
Luiz A. Dolabela Falcão ◽  
Guilherme B. Ferreira
Keyword(s):  
Species Richness ◽  
Functional Diversity ◽  
Elevational Gradient ◽  
Southeastern Brazil ◽  
Mountain Range

scholarly journals Quantitative biogeography of Orthoptera does not support classical qualitative regionalization of the Carpathian Mountains

2019 ◽  
Vol 128 (4) ◽  
pp. 887-900
Author(s):  
Benjamín Jarčuška ◽  
Peter Kaňuch ◽  
Ladislav Naďo ◽  
Anton Krištín
Keyword(s):  
Species Richness ◽  
Environmental Variables ◽  
Quantitative Data ◽  
Expert Knowledge ◽  
Species Turnover ◽  
Group Method ◽  
Mountain Range ◽  
Carpathian Mountains ◽  
Dissimilarity Matrix ◽  
The Carpathians

Abstract The first biogeographical division of the Carpathians, the second largest mountain range in Europe, was based on qualitative observational floristic data > 100 years ago and has also been applied for the regional zoogeography. In this study, the recent availability of detailed quantitative data allowed us to perform a more powerful evaluation of the classical biogeographical regions of the area. Thus, we analysed updated distribution patterns of 137 Orthoptera species native to the Carpathian Mountains and, by using published species range maps, we compiled data on species presence or absence within 2576 cells of a 10 km × 10 km universal transverse mercator grid in the area. Pattern analysis of the data was based on non-metric multidimensional scaling and clustering using six different algorithms applied to a β sim dissimilarity matrix. The unweighted pair-group method using arithmetic averages, which gave the best performance in the analysis of species turnover, delineated four regions. Environmental variables and species richness were used in logistic regression as predictors of delineated clusters, and indicator species were identified for each of the inferred regions. The pattern can be explained, in part, by environmental variables and species richness (34.2%) and was also influenced by connections with the orthopterofauna from adjacent areas. The observed discrepancy between regionalization based on expert knowledge and the pattern revealed using quantitative data provides a warning that the biogeography of the Carpathians might also have been revised in other taxa, where only classical qualitative regionalization exists.

scholarly journals Changes in plant diversity in a water-limited and isolated high-mountain range (Sierra Nevada, Spain)

Alpine Botany ◽  
2021 ◽  
Author(s):  
Andrea Lamprecht ◽  
Harald Pauli ◽  
Maria Rosa Fernández Calzado ◽  
Juan Lorite ◽  
Joaquín Molero Mesa ◽  
...  
Keyword(s):  
Species Richness ◽  
Snow Cover ◽  
Sierra Nevada ◽  
Plant Diversity ◽  
Endemic Species ◽  
Vascular Plant ◽  
Climate Change Impacts ◽  
Permanent Plots ◽  
High Mountain ◽  
Mountain Range

AbstractClimate change impacts are of a particular concern in small mountain ranges, where cold-adapted plant species have their optimum zone in the upper bioclimatic belts. This is commonly the case in Mediterranean mountains, which often harbour high numbers of endemic species, enhancing the risk of biodiversity losses. This study deals with shifts in vascular plant diversity in the upper zones of the Sierra Nevada, Spain, in relation with climatic parameters during the past two decades. We used vegetation data from permanent plots of three surveys of two GLORIA study regions, spanning a period of 18 years (2001–2019); ERA5 temperature and precipitation data; and snow cover durations, derived from on-site soil temperature data. Relationships between diversity patterns and climate factors were analysed using GLMMs. Species richness showed a decline between 2001 and 2008, and increased thereafter. Species cover increased slightly but significantly, although not for endemic species. While endemics underwent cover losses proportional to non-endemics, more widespread shrub species increased. Precipitation tended to increase during the last decade, after a downward trend since 1960. Precipitation was positively related to species richness, colonisation events, and cover, and negatively to disappearance events. Longer snow cover duration and rising temperatures were also related to increasing species numbers, but not to cover changes. The rapid biotic responses of Mediterranean alpine plants indicate a tight synchronisation with climate fluctuations, especially with water availability. Thus, it rather confirms concerns about biodiversity losses, if projections of increasing temperature in combination with decreasing precipitation hold true.

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