Daniel A. Zacarias

10 Questions 15 Answers 0 Followers

Questions related from Daniel A. Zacarias

Is it possible to assess the dynamics of malaria endemism (monthly) under climate change scenarios?

I would like to model the dynamics of endemism (areas with 7 or more months with high probability of malaria), monthly, under current and future climate scenarios. I believe this can help direct...

17 September 2024 5,373 0 View

How can I allocate more memory in R?

Hi all. . I'm trying to build range-diversity plots based on the Arita et al. (2011) script. My matrix is 136793 sites by 64 species. I've tried on a 4Gb Macbook Air and on a 64-bit Windows, but...

31 May 2020 6,262 0 View

How to calculate the number of land cover classes in a grid?

Hi All I'm on a project that aims to understand land cover changes as a result of rapid urbanisation. We are testing the hypothesis that urban growth homogenises the forms of land cover, that is,...

04 February 2020 612 4 View

Can any one recommend a comprehensive database of fish traits?

Dear All I am beginning a project to understand the impact on climate change on fish diversity and implications for coral reefs at the Western Indian Ocean (WIO) region. I am targeting top...

30 November 2018 8,786 7 View

Can anyone suggest appropriate places to download marine data?

I am working with the distribution and diversity of coral species and I would like to know if there is an online database where I could download spatial marine data (an analogue to the WorldClim...

03 April 2017 5,875 4 View

What are the differences between species richness and species co-occurrence? If yes, how can species co-occurrence patterns be displayed in a map?

When working with several species, two basic ideas appear as results: species richness and species co-occurrence. To my understanding, species richness represents the number of species in an area,...

26 October 2016 4,997 5 View

How do I calculate areas in continuous raster of species distribution models (5 classes)?

I just generated continuous models of species distribution models using MaxEnt. Now I would like to calculate the areas (in ha) occupied by each suitability class (5 classes: very low (0 - 0.2),...

26 November 2015 4,035 10 View

How can I assign research results into one of the 4 categories outlined by the Doxey's irritation index?

In trying to understand community responses to tourism development, it is common to use the irritation index proposed by Doxey (1975). This model suggests that communities have (or may be in) one...

18 May 2015 4,849 4 View

Is there a relationship between a country's GDP and the amount of research produced by the same country?

In my study, I hypothesize that the amount of research produced by a specific country is a function of the country's population size and GDP. This stems from the thought that the higher the number...

27 April 2015 321 8 View

Behaviour of (potential) tourists when choosing Mozambique as a travel destination in the post-pandemic period

Dear friends/ colleagues One of my students is running a project trying to understand the behaviour of (potential) tourists when choosing Mozambique as a travel destination in the post-pandemic...

01 January 1970 5,644 0 View