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Questions related from Luís Quinta-Nova
I used the tool "Spatial analysis by regions", available in Patch Analyst extension for ArcMap, in order to conduct landscape level analyses on polygon layers for individual polygon regions. As a...
02 March 2023 8,251 3 View
During the last years many electronic databases of vegetation plots, mainly phytosociological relevés, were established in different European countries. These databases contain information...
29 May 2019 3,146 4 View
I intend to use the Psychological Characteristics of Developing Excellence Questionnaire (PCDEQ), developed and validated by MacNamara & Collins (2011, 2013), in a study in Portugal. In order to...
19 December 2017 4,236 3 View
We need to know how to choose an appropriated validation method to apply to the results of an Analytic Hierarchy Process.
14 February 2017 490 11 View
In the aim of a research project we need average quantities/ range of values of biomass (ton/ha/year) per forest type (e.g.: Eucalyptus stands, Maritime Pine stands, scrubland, ...) for the SW of...
25 August 2016 8,475 5 View
The Mediterranean basin has long been a site of temperate fruit and nut production. Currently, new agricultural cultures like pistachio (Pistacia vera), a small tree originating from Central Asia...
31 March 2016 7,124 4 View
Next year will be held in portugal a orienteering event with approximately 2000 participants. In order to measure the impact over the local economy of a rural county we need to chose a methodology...
24 December 2015 3,673 6 View
In Analytic Hierarchy Process (AHP), after an initial stage of data collection, the next step is related to GIS analysis, and focuses on converting collected vector maps to raster and spatial...
27 August 2015 1,346 11 View
The type and number of variables comprising the dimensions of an environmental niche vary from one species to another and the relative importance of particular environmental variables for a...
25 May 2015 1,956 9 View
The Analytic Hierarchy Process - AHP (Saaty 1980) is a multicriteria tool considered to be relevant to nearly any ecosystem management application that requires the evaluation of multiple...
30 March 2015 1,201 6 View
The global fresh fruit trade, coupled with the cryptic nature of the larvae to hide inside the fruit undetected until after transportation, facilitate the increasing distribution of this pest....
03 March 2015 3,870 6 View
Some herbaceous plants in the understory of forests are dependent of the quantity of light that are not intercepted by the forest canopy in order to flourish and have seeds to sexually propagate;...
29 November 2014 5,511 17 View
The Analytic Hierarchy Process (AHP) was introduced by Saaty (1977) and is a very popular means to calculate the needed weighting factors by help of a preference matrix where all identified...
31 October 2014 3,407 13 View
Soil bioengineering is the use of living plant materials to perform some engineering function, from simple erosion control with hydroseeding to more complex slope stabilization with willows and...
03 October 2014 7,839 5 View
There are two subspecies: Asphodelus bento-rainhae ssp. bento-rainhae is found in Portugal and Asphodelus bento-rainhae ssp. salmanticus is present in Spain. The two subspecies are not closely...
22 August 2014 793 6 View
Orienteering is a sport which takes place largely off-track in terrain which often has conservation value. This gives rise to concern amongst protected areas' managers and ecologists about the...
29 January 2014 7,048 2 View
Habitat usage by animal species is driven by availability of food, nest sites, protection from predators, presence of competitors or facilitating species, etc. However GIS-based models typically...
14 May 2013 6,280 7 View
Orienteering is a sport which takes place largely off-track in terrain which often has conservation value. This gives rise to concern amongst ecologists that there is the potential for damage to...
24 March 2013 1,810 2 View
We are preparing a project that intends to study how the climate change affects the distribution of Arbutus unedo, but the literature that we found about environmental factors affecting the...
01 January 1970 7,707 3 View
