Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Competition between phytoplankton and bacteria: exclusion and
  coexistence   Resource-based competition between microorganisms species in continuous
culture has been studied extensively both experimentally and theoretically,
mostly for bacteria through Monod and and Contois "constant yield" models, or
for phytoplankton through the Droop "variable yield" models. For homogeneous
populations of N bacterial species (Monod) or N phytoplanktonic species
(Droop), with one limiting substrate and under constant controls, the
theoretical studies indicated that competitive exclusion occurs: only one
species wins the competition and displaces all the others. On the contrary for
attached bacterial species described by a Contois model, theory predicts
coexistence between several species. In this paper we present a generalization
of these results by studying a competition between these three different types
of microorganisms. We prove that the outcome of the competition is a
coexistence between several attached bacterial species with a free species of
bacteria or phytoplankton, all the other free species being washed out. This
demonstration is based mainly on the study of the substrate concentration's
evolution.

26
The categories of this paper are: bayes-an
5
The categories of this paper are: gr-qc
3
The categories of this paper are: physics
4
The categories of this paper are: cond-mat
19
The categories of this paper are: eess
24
The categories of this paper are: dg-ga
20
The categories of this paper are: acc-phys
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
35
The categories of this paper are: mtrl-th
16
The categories of this paper are: stat
32
The categories of this paper are: atom-ph
11
The categories of this paper are: hep-lat
31
The categories of this paper are: ao-sci
9
The categories of this paper are: nlin