NDLI: Algal defenses, population stability, and the risk of herbivore extinctions: a chemostat model and experiment

Content Provider	Springer Nature Link
Author	Stap, Irene Vos, Matthijs Kooi, Bob W. Mulling, Bram T. M. Donk, Ellen Mooij, Wolf M.
Copyright Year	2009
Abstract	The effects of inducible defenses and constitutive defenses on population dynamics were investigated in a freshwater plankton system with rotifers as predators and different algal strains as prey. We made predictions for these systems using a chemostat predator–prey model and focused on population stability and predator persistence as a function of flow-through rate. The model exhibits three major types of behavior at a high nutrient concentration: (1) at high dilution rates, only algae exist; (2) at intermediate dilution rates, algae and rotifers show stable coexistence; (3) at low dilution rates, large population fluctuations occur, with low minimum densities entailing a risk of stochastic rotifer extinctions. The size and location of the corresponding areas in parameter space critically depend on the type of algal defense strategy. In an 83-day high-nutrient chemostat experiment we changed the dilution rate every 3 weeks, from 0.7 to 0.5 to 0.3 to 0.1 per day. Within this range of dilution rates, rotifers and algae coexisted, and population fluctuations of algae clearly increased as dilution rates decreased. The CV of herbivore densities was highest at the end of the experiment, when the dilution rate was low. On day 80, herbivorous rotifers had become undetectable in all three chemostats with permanently defended algae (where rotifer densities had already been low) and in two out of three chemostats where rotifers had been feeding on algae with inducible defenses (that represented more edible food). We interpret our results in relation to the paradox of enrichment.
Starting Page	1145
Ending Page	1153
Page Count	9
File Format	PDF
ISSN	09123814
Journal	Ecological Research
Volume Number	24
Issue Number	5
e-ISSN	14401703
Language	English
Publisher	Springer Japan
Publisher Date	2009-03-12
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Phenotypic plasticity Plant defenses Herbivory Scenedesmus Brachionus Forestry Behavioural Sciences Evolutionary Biology Zoology Plant Sciences Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Breeding migration and population stability

The resource regulation hypothesis and positive feedback loops in plant–herbivore interactions

Mathematical modeling of colony formation in algal blooms: phenotypic plasticity in cyanobacteria

Resource-dependent reproductive adjustment and the stability of consumer-resource dynamics

Regional differences in the morphology of a shrub Damnacanthus indicus: An induced resistance to deer herbivory?

Biological invasion as a natural experiment of the evolutionary processes: introduction of the special feature

Phenotypic plasticity and contemporary evolution in introduced populations: evidence from translocated populations of white sands pupfish (Cyrpinodon tularosa)

Evolutionary ecology of inducible morphological plasticity in predator–prey interaction: toward the practical links with population ecology

Relationships among Key deer, insect herbivores, and plant quality

Algal defenses, population stability, and the risk of herbivore extinctions: a chemostat model and experiment

Similar Documents

Breeding migration and population stability

The resource regulation hypothesis and positive feedback loops in plant–herbivore interactions

Mathematical modeling of colony formation in algal blooms: phenotypic plasticity in cyanobacteria

Resource-dependent reproductive adjustment and the stability of consumer-resource dynamics

Regional differences in the morphology of a shrub Damnacanthus indicus: An induced resistance to deer herbivory?

Biological invasion as a natural experiment of the evolutionary processes: introduction of the special feature

Phenotypic plasticity and contemporary evolution in introduced populations: evidence from translocated populations of white sands pupfish (Cyrpinodon tularosa)

Evolutionary ecology of inducible morphological plasticity in predator–prey interaction: toward the practical links with population ecology

Relationships among Key deer, insect herbivores, and plant quality

Algal defenses, population stability, and the risk of herbivore extinctions: a chemostat model and experiment