scholarly journals Geographical Gradients in Argentinean Terrestrial Mammal Species Richness and Their Environmental Correlates

2012 ◽  
Vol 2012 ◽  
pp. 1-13
Author(s):  
Ana L. Márquez ◽  
Raimundo Real ◽  
Marta S. Kin ◽  
José Carlos Guerrero ◽  
Betina Galván ◽  
...  
Keyword(s):  
Species Richness ◽  
Variation Partitioning ◽  
Spatial Form ◽  
Spatial Filters ◽  
Mammal Species ◽  
Terrestrial Mammal ◽  
Explanatory Variables ◽  
Longitudinal Gradients ◽  
Partial Correlations ◽  
Partitioning Procedure

We analysed the main geographical trends of terrestrial mammal species richness (SR) in Argentina, assessing how broad-scale environmental variation (defined by climatic and topographic variables) and the spatial form of the country (defined by spatial filters based on spatial eigenvector mapping (SEVM)) influence the kinds and the numbers of mammal species along these geographical trends. We also evaluated if there are pure geographical trends not accounted for by the environmental or spatial factors. The environmental variables and spatial filters that simultaneously correlated with the geographical variables and SR were considered potential causes of the geographic trends. We performed partial correlations between SR and the geographical variables, maintaining the selected explanatory variables statistically constant, to determine if SR was fully explained by them or if a significant residual geographic pattern remained. All groups and subgroups presented a latitudinal gradient not attributable to the spatial form of the country. Most of these trends were not explained by climate. We used a variation partitioning procedure to quantify the pure geographic trend (PGT) that remained unaccounted for. The PGT was larger for latitudinal than for longitudinal gradients. This suggests that historical or purely geographical causes may also be relevant drivers of these geographical gradients in mammal diversity.

Geographic patterns and environmental correlates of terrestrial mammal species richness in China

2009 ◽  
Vol 17 (6) ◽  
pp. 652 ◽  
Author(s):  
Lin Xin ◽  
Wang Zhi-heng ◽  
Tang Zhi-yao ◽  
Zhao Shu-qing ◽  
Fang Jing-yun
Keyword(s):  
Species Richness ◽  
Mammal Species ◽  
Terrestrial Mammal ◽  
Environmental Correlates ◽  
Geographic Patterns

scholarly journals Terrestrial Mammal Species Richness and Composition in Three Small Forest Patches within an Oil Palm Landscape in Sabah, Malaysian Borneo

Mammal Study ◽  
2014 ◽  
Vol 39 (3) ◽  
pp. 141-154 ◽  
Author(s):  
Henry Bernard ◽  
Esther L. Baking ◽  
Anthony J. Giordano ◽  
Oliver R. Wearn ◽  
Abdul Hamid Ahmad
Keyword(s):  
Species Richness ◽  
Oil Palm ◽  
Mammal Species ◽  
Forest Patches ◽  
Terrestrial Mammal ◽  
Malaysian Borneo ◽  
Small Forest

scholarly journals Community structure and diversity of tropical forest mammals: data from a global camera trap network

2011 ◽  
Vol 366 (1578) ◽  
pp. 2703-2711 ◽  
Author(s):  
Jorge A. Ahumada ◽  
Carlos E. F. Silva ◽  
Krisna Gajapersad ◽  
Chris Hallam ◽  
Johanna Hurtado ◽  
...  
Keyword(s):  
Species Richness ◽  
Community Structure ◽  
Species Diversity ◽  
Tropical Forest ◽  
Functional Diversity ◽  
Camera Trap ◽  
Camera Trapping ◽  
Mammal Species ◽  
Terrestrial Mammal ◽  
Mammal Communities

Terrestrial mammals are a key component of tropical forest communities as indicators of ecosystem health and providers of important ecosystem services. However, there is little quantitative information about how they change with local, regional and global threats. In this paper, the first standardized pantropical forest terrestrial mammal community study, we examine several aspects of terrestrial mammal species and community diversity (species richness, species diversity, evenness, dominance, functional diversity and community structure) at seven sites around the globe using a single standardized camera trapping methodology approach. The sites—located in Uganda, Tanzania, Indonesia, Lao PDR, Suriname, Brazil and Costa Rica—are surrounded by different landscape configurations, from continuous forests to highly fragmented forests. We obtained more than 51 000 images and detected 105 species of mammals with a total sampling effort of 12 687 camera trap days. We find that mammal communities from highly fragmented sites have lower species richness, species diversity, functional diversity and higher dominance when compared with sites in partially fragmented and continuous forest. We emphasize the importance of standardized camera trapping approaches for obtaining baselines for monitoring forest mammal communities so as to adequately understand the effect of global, regional and local threats and appropriately inform conservation actions.

scholarly journals Diversity and activity patterns of medium- and large-sized terrestrial mammals at the Los Tuxtlas Biosphere Reserve, México

Therya ◽  
2021 ◽  
Vol 12 (2) ◽  
pp. 237-248
Author(s):  
Jesús Alejandro Ríos-Solís ◽  
José Juan Flores-Martínez ◽  
Víctor Sánchez-Cordero ◽  
Mario C. Lavariega
Keyword(s):  
Species Richness ◽  
Activity Patterns ◽  
Biosphere Reserve ◽  
Los Tuxtlas ◽  
Trapping Rate ◽  
Mammal Species ◽  
Southern Mexico ◽  
Terrestrial Mammal ◽  
Terrestrial Mammals ◽  
Landscape Degradation

Studies on diversity of animal communities allow determination of their species richness and composition.  This information is particularly relevant to establish sound conservation programs in biosphere reserves, where human activities should be focused on the sustainable use of natural resources and ensure biodiversity protection.  This study estimated the diversity and species richness and determined the species composition and activity patterns of medium- and large-sized terrestrial mammals in the Los Tuxtlas Biosphere Reserve (LTBR) located in Veracruz, Mexico.  We set 18 camera traps to record medium and large-sized terrestrial mammals from August 2016 to January 2017.  We calculated the trapping rate, guilds, and activity patterns of species.  Diversity was estimated with Hill numbers.  We compared our estimates with other studies in tropical forest in Mexico.  We obtained 308 independent captures of 13 species; Cuniculus paca and Dasyprocta mexicana were the species with the highest trapping rate.  Order-0, order-1, and order-2 diversity values were 13.99, 6.50, and 4.75 effective species, respectively, which ranks LTBR the fourth-most diverse reserve of medium- and large-sized terrestrial mammals compared to six other tropical rainforest sites in southern Mexico.  We recorded mammals representing five trophic guilds, of which frugivore-folivores (five species) and omnivores (three species) ranked highest.  All recorded species were primarily nocturnal (six species) or diurnal (six species).  Tamandua mexicana, Leopardus pardalis, L. wiedii, and Eira barbara are listed as endangered in the Mexican Official Standard Norm NOM-059-2019, and L. wiedii is listed as near threatened in the IUCN Red List of Threatened Species.  We were able to record 40.6 % of the terrestrial mammal species known to inhabit the LTBR.  The absence of large-sized species such as large predators and herbivores was notable.  Comparison of medium and large-sized mammal diversity of camera trapping studies in Mexico show that landscape degradation is impoverishing terrestrial mammal communities.

scholarly journals Assessing mammal species richness and occupancy in a Northeast Asian temperate forest shared by cattle

2021 ◽  
Author(s):  
Jiawei Feng ◽  
Yifei Sun ◽  
Hailong Li ◽  
Yuqi Xiao ◽  
Dandan Zhang ◽  
...  
Keyword(s):  
Species Richness ◽  
Temperate Forest ◽  
Mammal Species ◽  
Northeast Asian

scholarly journals Large mammal species richness and late Quaternary precipitation change in south-western Australia

2016 ◽  
Vol 32 (6) ◽  
pp. 760-769 ◽  
Author(s):  
J. Tyler Faith ◽  
Joe Dortch ◽  
Chelsea Jones ◽  
James Shulmeister ◽  
Kenny J. Travouillon
Keyword(s):  
Species Richness ◽  
Western Australia ◽  
Late Quaternary ◽  
Precipitation Change ◽  
Mammal Species ◽  
Large Mammal

scholarly journals Species Richness of the Family Ericaceae along an Elevational Gradient in Yunnan, China

Forests ◽  
2018 ◽  
Vol 9 (9) ◽  
pp. 511 ◽  
Author(s):  
Ji-Hua Wang ◽  
Yan-Fei Cai ◽  
Lu Zhang ◽  
Chuan-Kun Xu ◽  
Shi-Bao Zhang
Keyword(s):  
Species Richness ◽  
Environmental Gradients ◽  
Variation Partitioning ◽  
Elevational Gradient ◽  
Geometric Constraints ◽  
Mean Annual Precipitation ◽  
Mean Annual Temperature ◽  
The Family ◽  
Species Area ◽  
Upper Third

Knowledge about how species richness varies along spatial and environmental gradients is important for the conservation and use of biodiversity. The Ericaceae is a major component of alpine and subalpine vegetation globally. However, little is known about the spatial pattern of species richness and the factors that drive that richness in Ericaceae. We investigated variation in species richness of Ericaceae along an elevational gradient in Yunnan, China, and used a variation partitioning analysis based on redundancy analysis ordination to examine how those changes might be influenced by the mid-domain effect, the species-area relationship, and climatic variables. Species richness varied significantly with elevation, peaking in the upper third of the elevational gradient. Of the factors examined, climate explained a larger proportion of the variance in species richness along the elevational gradient than either land area or geometric constraints. Species richness showed a unimodal relationship with mean annual temperature and mean annual precipitation. The elevational pattern of species richness for Ericaceae was shaped by the combined effects of climate and competition. Our findings contribute to a better understanding of the potential effects of climate change on species richness for Ericaceae.

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