Aponogeton bruggenii 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Liliopsida Alismatales Aponogetonaceae

Scientific Name: Aponogeton bruggenii S.R.Yadav & Govekar
Taxonomic Notes:

Assessment Information [top]

Red List Category & Criteria: Vulnerable D2 ver 3.1
Year Published: 2011
Date Assessed: 2010-05-07
Assessor(s): Watve, A.
Reviewer(s): Juffe Bignoli, D., Narasimhan, D., Kumar, V.S., Ravikumar, K. & Rao, M.L.V.
Contributor(s): Molur, S.
Aponogeton bruggenii was known from only type locality for many years, however in 2003, it was reported from an additional locality, about 25 km from the type locality. Both localities are considered as one location. The population of this species thrives in man made habitats - paddy fields and no serious threat has been reported so far other than weeding of the fields. However, the entire area is likely to undergo several major land use conversions which will affect large percentage of the population in future. The small area of occupancy and number of locations are within critical limits, however, there is currently no continuing habitat decline. It is therefore listed as Vulnerable under criteria D2 as it is very likely that the species will become extinct or Critically Endangered should land use change takes place in the only known location.

Geographic Range [top]

Range Description:It was reported from the type locality, Nerurpar which is about 9 km west of Kudal in Sindhudurg district of Maharashtra state. Apart from type locality, it has also been collected from Sathose near Savantwadi in Sindhudurg district (Gaikwad et al. 2003).
Countries occurrence:
India (Maharashtra)
Additional data:
Estimated area of occupancy (AOO) - km2:3Continuing decline in area of occupancy (AOO):No
Extreme fluctuations in area of occupancy (AOO):NoEstimated extent of occurrence (EOO) - km2:25
Continuing decline in extent of occurrence (EOO):NoExtreme fluctuations in extent of occurrence (EOO):No
Number of Locations:1Continuing decline in number of locations:No
Extreme fluctuations in the number of locations:NoLower elevation limit (metres):30
Upper elevation limit (metres):55
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:Mishra and Singh (2001) report that it is a weed in paddy fields and quite abundant (5-60 individuals per m2); however, Gaikwad et al. (2003) report it as rare. It is difficult to count the number of mature individuals in the population in the absence of any population study. The habitat, paddy fields, actually do not occupy the entire area in the region. The two localities could be considered as one location and area of occupancy based on known suitable habitat is very small.
Current Population Trend:Unknown
Additional data:
Number of mature individuals:2000Continuing decline of mature individuals:No
Extreme fluctuations:UnknownPopulation severely fragmented:No
Continuing decline in subpopulations:No
Extreme fluctuations in subpopulations:NoAll individuals in one subpopulation:No

Habitat and Ecology [top]

Habitat and Ecology:It is known to grow among paddy fields along the banks of the Tarkarli river. Mishra and Singh (2001) report that it is a weed in paddy fields and quite abundant (5-60 individuals per m2). However, this probably is not its natural habitat. It probably grew in similar seasonally waterlogged conditions, like the rivulets, streams and temporary ponds on lateritic areas and rocky outcrops nearby (A. Watve pers. comm. 2010). However, it is not known anywhere outside the known localities hence it is difficult to know more about its habitat requirements.
Continuing decline in area, extent and/or quality of habitat:No
Generation Length (years):2

Use and Trade [top]

Use and Trade: This species is not utilized for any purpose.

Threats [top]

Major Threat(s): Mishra and Singh (2001) remark that weeding operations in the paddy fields where this species grows are major threat to the species. However, more serious threat is from future changes in the landuse in the area where the species grows. In the area agriculture is changing to more intensive agriculture. Vast areas are getting affected due to land conversion for residential and industrial purposes. Twenty thermal power stations have been planned in the entire Konkan region along the coast and several infrastructure development projects are planned along with it. Although it has been opposed on environmental grounds, some conversions are likely to take place in the region where this species occurs.

Conservation Actions [top]

Conservation Actions: No conservation action has been reported so far. Research for this species is needed.

Citation: Watve, A. 2011. Aponogeton bruggenii. The IUCN Red List of Threatened Species 2011: e.T177177A7384396. . Downloaded on 23 September 2018.
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