The IUCN Red List of Threatened Species™   ISSN 2307-8235 (online)   IUCN 2008: T176969A7342463

Rotala malabarica

Assessment by: Mani, S.

View on www.iucnredlist.org

Citation: Mani, S. 2013. Rotala malabarica. The IUCN Red List of Threatened Species 2013:e.T176969A7342463. http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T176969A7342463.en

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THE IUCN RED LIST OF THREATENED SPECIES™

Taxonomy

Kingdom Phylum Class Order Family

Plantae Tracheophyta Magnoliopsida Myrtales Lythraceae

Taxon Name:  Rotala malabarica Pradeep , K.T.Joseph & Sivar.

Taxonomic Notes:

Assessment Information

Red List Category & Criteria: Critically Endangered B1ab(i,ii,iii)+2ab(i,ii,iii) ver 3.1

Year Published: 2013

Date Assessed: December 1, 2010

Justification:

Rotala malabarica was described in 1990 and has not been relocated in the type locality itself. It

occupies a very restricted area, on lateritic rocks, of less than 10 km2 and is threatened by lateritic

mining and extensive use of herbicides in the adjoining cashew plantations. Since the species has not

been recorded since its description, it is probably extinct. Further surveys in adjoining areas may reveal

its occurrence. It is assessed as Critically Endangered.

Geographic Range

Range Description:

Rotala malabarica is a short-lived annual plant and is endemic to southern India confined to one

location in Kannur District in Kerala (Cook 1996).

Country Occurrence:

Native: India (Kerala)

© The IUCN Red List of Threatened Species: Rotala malabarica – published in 2013.http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T176969A7342463.en

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Distribution Map

© The IUCN Red List of Threatened Species: Rotala malabarica – published in 2013.http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T176969A7342463.en

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PopulationNothing is known about the population of this species. However, since there is laterite mining in the

habitat of the species, it is inferred that the population is declining.

Current Population Trend:  Decreasing

Habitat and Ecology (see Appendix for additional information)

It is short-lived annual and found in seasonally pools in depressions on lateritic rocks containing rich

deposits of humus. The plant grows together with R. malampuzhensis in temporary pools in depressions

on lateritic rocks containing rich deposits of humus.

Systems:  Terrestrial, Freshwater

Use and TradeNo use has been reported for this species.

Threats (see Appendix for additional information)

The species and the habitat it was discovered in are threatened by lateritic mining. The species is also

threatened from the use of herbicides in the adjoining cashew plantations.

Conservation Actions (see Appendix for additional information)

Detailed surveys and studies on ecology, threats, habitat, population and trends are urgently required.

Credits

Assessor(s): Mani, S.

Reviewer(s): Sadasivaiah, B., Bhat, G.K., Augustine, J., Rao, M.L.V., Dahanukar, N. & Molur, S.

Contributor(s): Molur, S.

© The IUCN Red List of Threatened Species: Rotala malabarica – published in 2013.http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T176969A7342463.en

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BibliographyCook, C.D.K. 1996. Aquatic and Wetland Plants of India. Oxford University Press, Oxford.

IUCN. 2011. IUCN Red List of Threatened Species (ver. 2011.1). Available at: http://www.iucnredlist.org.(Accessed: 16 June 2011).

Pradeep, A.K., Joseph, K.T. and Sivarajan, V.V. 1990. Rotala malabarica, a new species of Lythraceae fromIndia. Botanical Bulletin of Academia Sinica 31: 59-61.

CitationMani, S. 2013. Rotala malabarica. The IUCN Red List of Threatened Species 2013: e.T176969A7342463.http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T176969A7342463.en

DisclaimerTo make use of this information, please check the Terms of Use.

External ResourcesFor Images and External Links to Additional Information, please see the Red List website.

© The IUCN Red List of Threatened Species: Rotala malabarica – published in 2013.http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T176969A7342463.en

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Appendix

Habitats(http://www.iucnredlist.org/technical-documents/classification-schemes)

Habitat Season SuitabilityMajorImportance?

5. Wetlands (inland) -> 5.8. Wetlands (inland) - Seasonal/IntermittentFreshwater Marshes/Pools (under 8ha)

- Suitable Yes

0. Root -> 6. Rocky areas (eg. inland cliffs, mountain peaks) - Suitable Yes

Threats(http://www.iucnredlist.org/technical-documents/classification-schemes)

Threat Timing Scope Severity Impact Score

2. Agriculture & aquaculture -> 2.1. Annual &perennial non-timber crops -> 2.1.2. Small-holderfarming

Ongoing Majority (50-90%)

Very rapiddeclines

High impact: 8

Stresses: 1. Ecosystem stresses -> 1.1. Ecosystem conversion

2. Species Stresses -> 2.2. Species disturbance

3. Energy production & mining -> 3.2. Mining &quarrying

Ongoing Majority (50-90%)

Very rapiddeclines

High impact: 8

Stresses: 1. Ecosystem stresses -> 1.1. Ecosystem conversion

1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Ecosystem stresses -> 1.3. Indirect ecosystem effects

2. Species Stresses -> 2.1. Species mortality

2. Species Stresses -> 2.2. Species disturbance

9. Pollution -> 9.3. Agricultural & forestry effluents ->9.3.3. Herbicides and pesticides

Ongoing Majority (50-90%)

Very rapiddeclines

High impact: 8

Stresses: 2. Species Stresses -> 2.1. Species mortality

Conservation Actions in Place(http://www.iucnredlist.org/technical-documents/classification-schemes)

Conservation Actions in Place

In-Place Research, Monitoring and Planning

Action Recovery plan: No

Systematic monitoring scheme: No

In-Place Land/Water Protection and Management

Conservation sites identified: Yes, over part of range

Occur in at least one PA: Unknown

Area based regional management plan: No

© The IUCN Red List of Threatened Species: Rotala malabarica – published in 2013.http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T176969A7342463.en

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Conservation Actions in Place

Invasive species control or prevention: No

In-Place Species Management

Harvest management plan: No

Successfully reintroduced or introduced beningly: No

Subject to ex-situ conservation: No

In-Place Education

Subject to recent education and awareness programmes: No

Included in international legislation: No

Subject to any international management/trade controls: No

Conservation Actions Needed(http://www.iucnredlist.org/technical-documents/classification-schemes)

Conservation Actions Needed

1. Land/water protection -> 1.1. Site/area protection

1. Land/water protection -> 1.2. Resource & habitat protection

Research Needed(http://www.iucnredlist.org/technical-documents/classification-schemes)

Research Needed

1. Research -> 1.2. Population size, distribution & trends

1. Research -> 1.3. Life history & ecology

1. Research -> 1.5. Threats

3. Monitoring -> 3.1. Population trends

3. Monitoring -> 3.4. Habitat trends

Additional Data Fields

Distribution

Estimated area of occupancy (AOO) (km²): 9-10

Continuing decline in area of occupancy (AOO): Yes

Estimated extent of occurrence (EOO) (km²): 9-10

Continuing decline in extent of occurrence (EOO): Yes

© The IUCN Red List of Threatened Species: Rotala malabarica – published in 2013.http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T176969A7342463.en

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Distribution

Number of Locations: 1

Population

Population severely fragmented: No

Habitats and Ecology

Continuing decline in area, extent and/or quality of habitat: Yes

© The IUCN Red List of Threatened Species: Rotala malabarica – published in 2013.http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T176969A7342463.en

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The IUCN Red List of Threatened Species™   ISSN 2307-8235 (online)   IUCN 2008: T176969A7342463

The IUCN Red List Partnership

The IUCN Red List of Threatened Species™ is produced and managed by the IUCN Global Species

Programme, the IUCN Species Survival Commission (SSC) and The IUCN Red List Partnership. The IUCN

Red List Partners are: BirdLife International; Botanic Gardens Conservation International; Conservation

International; Microsoft; NatureServe; Royal Botanic Gardens, Kew; Sapienza University of Rome; Texas

A&M University; Wildscreen; and Zoological Society of London.

THE IUCN RED LIST OF THREATENED SPECIES™

© The IUCN Red List of Threatened Species: Rotala malabarica – published in 2013.http://dx.doi.org/10.2305/IUCN.UK.2011-1.RLTS.T176969A7342463.en

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