scholarly journals New localities and distribution models inform the conservation status of the endangered lizard Anolis guamuhaya (Squamata: Dactyloidae) in central Cuba

2020 ◽  
Vol 19 (1) ◽  
pp. 13-33
Author(s):  
Tomás M. Rodríguez-Cabrera ◽  
Javier Torres ◽  
Carlos A. Mancina ◽  
Ruben Marrero ◽  
Yasel U. Alfonso ◽  
...  
Keyword(s):  
Ecological Niche ◽  
Ecological Niche Modeling ◽  
New Records ◽  
Global Climate ◽  
Conservation Status ◽  
Niche Modeling ◽  
Distribution Models ◽  
Area Of Occupancy ◽  
New Localities ◽  
Iucn Criteria

New localities and distribution models inform the conservation status of the endangered lizard Anolis guamuhaya (Squamata: Dactyloidae) from central Cuba. Anolis guamuhaya is known from seven localities restricted to the Guamuhaya Massif in central Cuba and is always associated with mountane ecosystems above 300 m a.s.l. Previous evaluations of the conservation status of the species based on the estimated number of mature individuals have categorized the anole as Endangered. Eight new records of A. guamuhaya are provided here. These double the number of known localities, and two represent the first records of the species in lowland areas, apart from the Guamuhaya Massif. The new records extend the elevational range of the species from 15 m to above 1000 m. We used ecological niche modeling based on all of the locality records, along with what we considered the most appropriate IUCN criteria according to the available information (Criterion B) to reevaluate the conservation status of the species. These new records of A. guamuhaya increase its area of occupancy up to a total of 60 km2 , and its extent of occurrence up to 648 km2 . Despite this increase in geographic range, the species meets the IUCN criteria in the category of Endangered. We used ecological niche modeling to predict possible trends for the species under differing scenarios of global climate change, all of which portend a drastic reduction in area climatically suitable for A. guamuhaya.

scholarly journals Redescription, geographic distribution and ecological niche modeling of Elapomorphus wuchereri (Serpentes: Dipsadidae)

2017 ◽  
Vol 16 (2) ◽  
pp. 225 ◽  
Author(s):  
Omar Machado Entiauspe-Neto ◽  
Márcia Ferret Renner ◽  
Conrado Mario-da-Rosa ◽  
Arthur Diesel Abegg ◽  
Daniel Loebmann ◽  
...  
Keyword(s):  
Species Distribution ◽  
Ecological Niche ◽  
Species Distribution Model ◽  
Ecological Niche Modeling ◽  
Conservation Status ◽  
Original Description ◽  
Niche Modeling ◽  
Distribution Model ◽  
Taxonomic History ◽  
History Of

The original description of Elapomorphus wuchereri Günther, 1861 included a drawing and brief comments about the morphology of three specimens; two of the latter belong to another species and the holotype is lost. Based on the discovery of new specimens, we redescribe Elapomorphus wuchereri and designate a neotype. We discuss the variation and the taxonomic history of the species, and based on the results of a species distribution model analysis (SDM), we describe the distribution, extent of occurrence, and conservation status.

Analysis of the geographical distribution of Psammolestes Bergroth (Hemiptera: Heteroptera: Reduviidae: Triatominae) in South America, with new records of Psammolestes tertius Lent & Jurberg

Zootaxa ◽  
2009 ◽  
Vol 2033 (1) ◽  
pp. 41-48 ◽  
Author(s):  
RODRIGO GURGEL-GONÇALVES ◽  
REINALDA BANDEIRA SILVA
Keyword(s):  
South America ◽  
Geographical Distribution ◽  
Ecological Niche ◽  
Ecological Niche Modeling ◽  
New Records ◽  
Climatic Factors ◽  
Niche Modeling ◽  
Niche Differences ◽  
Rule Set ◽  
Venezuelan Llanos

The genus Psammolestes is comprised of three recognized Rhodniini species: P. arthuri, P. coreodes, and P. tertius. The geographical distribution of these triatomines in South America was analyzed using ecological niche modeling. Additionally, temperature, precipitation, and altitude limits for these species were estimated. The genetic algorithm for rule-set production (GARP) was applied to predict their geographical distribution. The models used were able to predict, with high probabilities, the occurrence of P. tertius in open woodlands of South America (mainly Cerrado and Caatinga ecoregions), making it the Psammolestes species with the widest distribution. P. arthuri presented a discontinuous potential distribution covering the Venezuelan Llanos and southeastern/southwestern fringes of Amazonia. P. coreodes presented the southernmost area of distribution, occurring mainly in the Argentinean Chaco. The models also support potential areas of co-occurrence for P. tertius and P. coreodes in southwestern Brazil. Clear ecological niche differences were observed for the three species: while P. arthuri occurred in warm and humid areas, P. coreodes occupied the driest and coldest areas. P. tertius presented intermediate climatological limits and occurred in the highest altitudes. Although climatic factors may determine the triatomine distribution, biotic factors, such as the association with thornbirds (Phacellodomus), may also influence the geographical distribution of Psammolestes species. Finally, this study confirms the usefulness of ecological niche modeling as a tool for studies on biogeographical aspects of triatomines.

scholarly journals Impacts of climate change on Capparis spinosa L. based on ecological niche modeling

PeerJ ◽  
2018 ◽  
Vol 6 ◽  
pp. e5792 ◽  
Author(s):  
Uzma Ashraf ◽  
Muhammad N. Chaudhry ◽  
Sajid R. Ahmad ◽  
Irfan Ashraf ◽  
Muhammad Arslan ◽  
...  
Keyword(s):  
Climate Change ◽  
Ecological Niche ◽  
Climate Models ◽  
Ecological Niche Modeling ◽  
Conservation Status ◽  
Niche Modeling ◽  
Anthropogenic Activity ◽  
Capparis Spinosa ◽  
Suitable Area ◽  
Impacts Of Climate Change

Recent changes in climate are transforming the situation of life on Earth, including impacting the conservation status of many plant and animal species. This study aims to evaluate potential impacts of climate change on a medicinal plant that is known to be heat-tolerant, Capparis spinosa L. We used ecological niche modeling to estimate current and future potential distributions for the species, considering two emissions scenarios and five climate models for two time periods (2050 and 2070). The results in terms of areal coverage at different suitability levels in the future were closely similar to its present-day distribution; indeed, only minor differences existed in highly suitable area, with increases of only 0.2–0.3% in suitable area for 2050 and 2070 under representative concentration pathway 4.5. Given that climate-mediated range shifts in the species are expected to be minor, conservation attention to this species can focus on minimizing local effects of anthropogenic activity.

scholarly journals New records of Convolvulaceae species for the Ceará state and its potential geographic distribution in Northeast Brazil

2020 ◽  
Vol 4 (1) ◽  
pp. 30
Author(s):  
Diego Santos ◽  
Ketley Gomes Campos ◽  
Marlene Feliciano Figueiredo ◽  
Edson Gomes Moura Júnior ◽  
Maria Teresa Buril
Keyword(s):  
Atlantic Forest ◽  
Geographic Distribution ◽  
Ecological Niche ◽  
Ecological Niche Modeling ◽  
New Records ◽  
Niche Modeling ◽  
Northeast Brazil ◽  
Diagnostic Characters ◽  
Modeling Analysis ◽  
Potential Geographic Distribution

This study reports six new records of Convolvulaceae for Ceará state, notheastern Brazil: Ipomoea aristolochifolia G.Don, Ipomoea calyptrata Dammer, I. cynanchifolia Meisn, I. longibracteolata Sim.-Bianch. & J. R. I. Wood, I. meyeri G. Don and Jacquemontia mucronifera (Choisy) Hallier f. Of these, I. longibracteolata and I. meyeri are new records for the Atlantic Forest and Caatinga, respectively. For each species registered are provided descriptions, taxonomic and ecological comments, illustrations or photos of diagnostic characters and an ecological niche modeling analysis in northeast Brazil.

scholarly journals New records of Pygmy Round-eared Bat, Lophostoma brasiliense Peters, 1867 (Chiroptera, Phyllostomidae), and updated distribution in Colombia

Check List ◽  
2020 ◽  
Vol 16 (2) ◽  
pp. 277-285
Author(s):  
Diego A. Esquivel ◽  
Angie P. Penagos ◽  
Sebastián García-R. ◽  
David Bennett
Keyword(s):  
Ecological Niche ◽  
New Records ◽  
Conservation Status ◽  
Wide Distribution ◽  
Neotropical Region ◽  
Ecological Niche Modelling ◽  
Niche Modelling ◽  
Southern Mexico ◽  
New Localities ◽  
The Caribbean

Lophostoma brasiliense Peters, 1867 has a wide distribution in the Neotropical region, with records extending from southern Mexico to central Paraguay and Brazil. In Colombia the distribution of this species seems to be discontinuous, due to a scarcity of records, which also makes it difficult to know about its threats and conservation status. Here, we report three new localities from Amazonia, Andean and Orinoquia regions. We updated the distribution and performed ecological niche modelling that suggest a wider presence of this species on the Caribbean and the Orinoquia region. Finally, we added some ecological notes about this species.

scholarly journals Automatic variable selection in ecological niche modeling: A case study using Cassin’s Sparrow (Peucaea cassinii)

2021 ◽  
Author(s):  
John L. Schnase ◽  
Mark L. Carroll
Keyword(s):  
Monte Carlo ◽  
Variable Selection ◽  
Environmental Variables ◽  
Ecological Niche ◽  
Ecological Niche Modeling ◽  
Climate Model ◽  
Global Climate ◽  
Global Climate Model ◽  
Niche Modeling ◽  
Modeling Process

AbstractMERRA/Max provides a feature selection approach to dimensionality reduction that enables direct use of global climate model outputs in ecological niche modeling. The system accomplishes this reduction through a Monte Carlo optimization in which many independent MaxEnt runs, operating on a species occurrence file and a small set of randomly selected variables in a large collection of variables, converge on an estimate of the top contributing predictors in the larger collection. These top predictors can be viewed as potential candidates in the variable selection step of the ecological niche modeling process. MERRA/Max’s Monte Carlo algorithm operates on files stored in the underlying filesystem, making it scalable to large data sets. Its software components can run as parallel processes in a high-performance cloud computing environment to yield near real-time performance. In tests using Cassin’s Sparrow (Peucaea cassinii) as the target species, MERRA/Max selected a set of predictors from Worldclim’s Bioclim collection of 19 environmental variables that have been shown to be important determinants of the species’ bioclimatic niche. It also selected biologically and ecologically meaningful predictors from a more diverse set of 86 environmental variables derived from NASA’s Modern-Era Retrospective Analysis for Research and Applications Version 2 (MERRA-2) reanalysis, an output product of the Goddard Earth Observing System Version 5 (GEOS-5) modeling system. We believe these results point to a technological approach that could expand the use global climate model outputs in ecological niche modeling, streamline the modeling process, and, eventually, enable automated bioclimatic modeling as a practical, readily accessible, low-cost, commercial cloud service.

The Geography of Disease Transmission

2011 ◽  
Author(s):  
A. Townsend Peterson ◽  
Jorge Soberón ◽  
Richard G. Pearson ◽  
Robert P. Anderson ◽  
Enrique Martínez-Meyer ◽  
...  
Keyword(s):  
Disease Transmission ◽  
Disease Ecology ◽  
Ecological Niche ◽  
Ecological Niche Modeling ◽  
Global Climate ◽  
Risk Identification ◽  
Niche Modeling ◽  
Transmission Risk ◽  
Populations At Risk ◽  
The Face

This chapter discusses various applications of ecological niche modeling in the study of the geography and ecology of disease transmission. Niche modeling approaches have many applications in the field of public health and epidemiology. Among the most common spatial epidemiological applications are mapping geographic patterns of disease transmission risk, identification of risk factors, and assessment of populations at risk of infection. The chapter describes a number of applications of ecological niche modeling in the realm of disease transmission, such as characterizing disease ecology, disease distributions and risk mapping, and potential distributions of pathogens or other individual component species in transmission systems, as well as forecasting disease transmission patterns in the face of ongoing global climate change. It also reviews practical considerations to keep in mind when exploring such applications and outlines some caveats, limitations, and challenges involved. Finally, it suggests future directions for research.

New Localities, Distribution and Habitat Modeling of the Critically Endangered Sri Lankan Frog Nannophrys marmorata

2020 ◽  
Vol 27 (1) ◽  
pp. 33-40
Author(s):  
Kanishka D. B. Ukuwela ◽  
Imesh Nuwan Bandara ◽  
H. K. Sameera De Zoysa ◽  
U. A. L. Deshan Rupasinghe ◽  
Rajnish P. G. Vandercone
Keyword(s):  
Sri Lanka ◽  
Ecological Niche ◽  
Ecological Niche Modeling ◽  
Distribution Patterns ◽  
Habitat Modeling ◽  
Critically Endangered ◽  
Mountain Range ◽  
Critically Endangered Species ◽  
Area Of Occupancy ◽  
New Localities

Nannophrys marmorata is a critically endangered species of frog known only from a few locations in the Knuckles Conservation Forest (KCF) in the Knuckles mountain range of Sri Lanka. Here, we report new localities outside its known range in the KCF and examine the distribution of N. marmorata providing the most extensive distribution map for this species. Furthermore, using the distribution information, we model the fundamental ecological niche of this species through Ecological Niche Modeling (ENM) to predict suitable habitats and fine-scale distribution patterns. ENM predicted eastern slopes of the Knuckles mountain range in central Sri Lanka as areas with high habitat suitability (suitability 75%) for N. marmorata. Predicted Extent of Occurrence for N. marmorata was 831 km2 and predicted Area of Occupancy was 275 km2. We discuss these findings in light of conservation for this species threatened with extinction.

scholarly journals Biogeografía del tomate Solanum lycopersicum var. cerasiforme (Solanaceae) en su centro de origen (sur de América) y de domesticación (México)

2019 ◽  
Vol 67 (4) ◽  
Author(s):  
Gino Delices ◽  
Raúl Otto ◽  
Rosalia Nuñez Pastrana ◽  
Pablo Andrés Meza ◽  
Ricardo Serna-Lagunez ◽  
...  
Keyword(s):  
South America ◽  
Solanum Lycopersicum ◽  
Environmental Conditions ◽  
Ecological Niche ◽  
Ecological Niche Modeling ◽  
New Records ◽  
The State ◽  
Niche Modeling ◽  
Climatic Variables ◽  
Tomato Production

The understanding geography and ecology role in the distribution of Solanum lycopersicum var. cerasiforme is essential for knowledge of areas with potential for tomato production and conservation. In the present work, we analyzed the environmental conditions of the center of origin of the species in South America and we compared them with records in Mexico, particularly in the state of Veracruz, tomato domestication region. We used eight climatic variables predictors and the latitude and longitude data of the species collections registered in literature and database to run two models, the first one for the south of America and the second one for Mexico. We evaluated the models by using the partial ROC method; we conducted a niche similarity and equivalency test to compare both models. We carried out a fieldwork to observe new records of the species and register the environmental conditions in which they growth. The main climatic variables of temperature were the most important for the ecological niche modeling of South America and the ecological niche modeling of Mexico. The models performed very well cause the partial roc test showed significant value for both models1.86 y 1.71 (p<0.0001). Based on our fieldwork, we registered 27 new records, we can find wild tomatoes between 14 and 2 100 amsl in areas with a range of temperature average 19-24 ºC and annual average precipitation 1 166-2 260 mm. Finally, we find out that there is climatic differentiation between South America and Mexico (most areas of the state of Veracruz) for the species.

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