نتایج جستجو برای: bioclimatic deficiency

تعداد نتایج: 138371  

خسروی, رسول, همامی, محمود رضا, منصوره, ملکیان,

Climatic change can impose physiological constraints on species and can therefore affect species distribution. Bioclimatic predictors, including annual trends, regimes, thresholds and bio-limiting factors are the most important independent variables in species distribution models. Water and temperature are the most limiting factors in arid ecosystem in central Iran. Therefore, mapping of climat...

2014
RAQUEL A. GARCIA Raquel A. Garcia Miguel B. Araújo

Africa is predicted to be highly vulnerable to 21st century climatic changes. Assessing the impacts of these changes on Africa’s biodiversity is, however, plagued by uncertainties, and markedly different results can be obtained from alternative bioclimatic envelope models or future climate projections. Using an ensemble forecasting framework, we examine projections of future shifts in climatic ...

2012
Mariana Munguía Carsten Rahbek Thiago F. Rangel Jose Alexandre F. Diniz-Filho Miguel B. Araújo

A common assumption in bioclimatic envelope modeling is that species distributions are in equilibrium with contemporary climate. A number of studies have measured departures from equilibrium in species distributions in particular regions, but such investigations were never carried out for a complete lineage across its entire distribution. We measure departures of equilibrium with contemporary c...

2012
Maria Giannopoulou

Open urban public spaces comprise an important element for the development of social, cultural and economic activities of the population in the modern cities. These spaces are also considered regulators of the region’s climate conditions, providing better thermal, visual and auditory conditions which can be optimized by the application of appropriate strategies of bioclimatic design. The paper ...

2011
Gonzalo D. Rubio Luis E. Acosta

New records of the spider Chibchea salta Huber 2000 (Araneae, Pholcidae) from northwestern Argentina are provided, and the potential range of this species is modeled. Two presence-only methods, Maxent and Bioclim, were run using 19 bioclimatic parameters at a resolution of 30 arc seconds. The climatic profile of C. salta is described, and the relative importance of the bioclimatic variables is ...

2012
Raquel A Garcia Neil D Burgess Mar Cabeza Carsten Rahbek Miguel B Araújo

Africa is predicted to be highly vulnerable to 21st century climatic changes. Assessing the impacts of these changes on Africa’s biodiversity is, however, plagued by uncertainties, and markedly different results can be obtained from alternative bioclimatic envelope models or future climate projections. Using an ensemble forecasting framework, we examine projections of future shifts in climatic ...

Journal: :CoRR 2012
Maumita Bhattacharya

Many machine learning (ML) approaches are widely used to generate bioclimatic models for prediction of geographic range of organism as a function of climate. Applications such as prediction of range shift in organism, range of invasive species influenced by climate change are important parameters in understanding the impact of climate change. However, success of machine learning-based approache...

Journal: :International journal of biometeorology 1999
A Matzarakis H Mayer M G Iziomon

The physiological equivalent temperature, PET, is a thermal index derived from the human energy balance. It is well suited to the evaluation of the thermal component of different climates. As well as having a detailed physiological basis, PET is preferable to other thermal indexes like the predicted mean vote because of its unit ( degrees C), which makes results more comprehensible to urban or ...

Journal: :Present Environment and Sustainable Development 2015

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