Sujan Henkanaththegedara

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Questions related from Sujan Henkanaththegedara

Error in tx %*% comb : non-conformable arguments?

Hi, I am trying to identify some indicator species with R "indicspecies" package using "multipatt" function. I think, I am following the instructions, but seems like there is something wrong with...

22 November 2020 5,794 1 View

What are some examples for human male trait elaborations?

Sexual selection by females promotes trait elaborations in males (e.g. large body size, colorful plumage etc.). Are you aware of some examples and/or some good reads on human male trait...

18 December 2017 3,879 2 View

Do you know any locations where we can find invasive crayfish in Virginia, USA?

We are studying the potential impacts of invasive crayfish on native crayfish in Virginia, USA. At the moment, we are trying to find more information on confirmed occurrences of following invasive...

14 November 2014 9,719 2 View

Does anyone have suggestions for information or published works on species interactions between native and invasive crayfish from the eastern US?

We are trying to learn more about any kind of species interactions (competition, predation, disease transmission etc.) between native and non-native (invasive) crayfish in the eastern United...

14 November 2014 4,360 2 View

What is an effective way to analyze long term trends in bird population size?

I am trying to get a feeling for long term population dynamics of some birds using Christmas Bird Counts and Breeding Bird Surveys. I would appreciate any suggestions, citations and comments.

07 March 2014 3,165 6 View