Pacific Island Ecosystems at Risk (PIER)
Balaka longirostris
RISK ASSESSMENT RESULTS: Low risk, score: 0
Australian/New Zealand Weed Risk Assessment adapted for Hawai‘i. Information on Risk Assessments Original risk assessment |
Balaka longirostris Becc. Family - Arecaceae. Common Names(s) - Mbalaka. Synonym(s) - Balaka leprosa A.C. Sm. |
Answer |
Score |
||
1.01 |
Is the species highly domesticated? |
y=-3, n=0 |
n |
0 |
1.02 |
Has the species become naturalized where grown? |
y=1, n=-1 |
||
1.03 |
Does the species have weedy races? |
y=-1, n=-1 |
||
2.01 |
Species suited to tropical or subtropical climate(s) (0-low; 1-intermediate; 2-high) – If island is primarily wet habitat, then substitute “wet tropical” for “tropical or subtropical” |
See Append 2 |
2 |
|
2.02 |
Quality of climate match data (0-low; 1-intermediate; 2-high) see appendix 2 |
2 |
||
2.03 |
Broad climate suitability (environmental versatility) |
y=1, n=0 |
n |
0 |
2.04 |
Native or naturalized in regions with tropical or subtropical climates |
y=1, n=0 |
y |
1 |
2.05 |
Does the species have a history of repeated introductions outside its natural range? |
y=-2, ?=-1, n=0 |
n |
|
3.01 |
Naturalized beyond native range y = 1*multiplier (see Append 2), n= question 2.05 |
n |
0 |
|
3.02 |
Garden/amenity/disturbance weed y = 1*multiplier (see Append 2) |
n=0 |
n |
0 |
3.03 |
Agricultural/forestry/horticultural weed y = 2*multiplier (see Append 2) |
n=0 |
n |
0 |
3.04 |
Environmental weed y = 2*multiplier (see Append 2) |
n=0 |
n |
0 |
3.05 |
Congeneric weed y = 1*multiplier (see Append 2) |
n=0 |
n |
0 |
4.01 |
Produces spines, thorns or burrs |
y=1, n=0 |
n |
0 |
4.02 |
Allelopathic |
y=1, n=0 |
n |
0 |
4.03 |
Parasitic |
y=1, n=0 |
n |
0 |
4.04 |
Unpalatable to grazing animals |
y=1, n=-1 |
||
4.05 |
Toxic to animals |
y=1, n=0 |
n |
0 |
4.06 |
Host for recognized pests and pathogens |
y=1, n=0 |
||
4.07 |
Causes allergies or is otherwise toxic to humans |
y=1, n=0 |
n |
0 |
4.08 |
Creates a fire hazard in natural ecosystems |
y=1, n=0 |
n |
0 |
4.09 |
Is a shade tolerant plant at some stage of its life cycle |
y=1, n=0 |
y |
1 |
4.10 |
Tolerates a wide range of soil conditions (or limestone conditions if not a volcanic island) |
y=1, n=0 |
n |
0 |
4.11 |
Climbing or smothering growth habit |
y=1, n=0 |
n |
0 |
4.12 |
Forms dense thickets |
y=1, n=0 |
n |
0 |
5.01 |
Aquatic |
y=5, n=0 |
n |
0 |
5.02 |
Grass |
y=1, n=0 |
n |
0 |
5.03 |
Nitrogen fixing woody plant |
y=1, n=0 |
n |
0 |
5.04 |
Geophyte (herbaceous with underground storage organs -- bulbs, corms, or tubers) |
y=1, n=0 |
n |
0 |
6.01 |
Evidence of substantial reproductive failure in native habitat |
y=1, n=0 |
n |
0 |
6.02 |
Produces viable seed. |
y=1, n=-1 |
y |
1 |
6.03 |
Hybridizes naturally |
y=1, n=-1 |
||
6.04 |
Self-compatible or apomictic |
y=1, n=-1 |
||
6.05 |
Requires specialist pollinators |
y=-1, n=0 |
n |
0 |
6.06 |
Reproduction by vegetative fragmentation |
y=1, n=-1 |
n |
-1 |
6.07 |
Minimum generative time (years) 1 year = 1, 2 or 3 years = 0, 4+ years = -1 |
See left |
||
7.01 |
Propagules likely to be dispersed unintentionally (plants growing in heavily trafficked areas) |
y=1, n=-1 |
n |
-1 |
7.02 |
Propagules dispersed intentionally by people |
y=1, n=-1 |
y |
1 |
7.03 |
Propagules likely to disperse as a produce contaminant |
y=1, n=-1 |
n |
-1 |
7.04 |
Propagules adapted to wind dispersal |
y=1, n=-1 |
n |
-1 |
7.05 |
Propagules water dispersed |
y=1, n=-1 |
||
7.06 |
Propagules bird dispersed |
y=1, n=-1 |
y |
1 |
7.07 |
Propagules dispersed by other animals (externally) |
y=1, n=-1 |
n |
-1 |
7.08 |
Propagules survive passage through the gut |
y=1, n=-1 |
y |
1 |
8.01 |
Prolific seed production (>1000/m2) |
y=1, n=-1 |
n |
-1 |
8.02 |
Evidence that a persistent propagule bank is formed (>1 yr) |
y=1, n=-1 |
||
8.03 |
Well controlled by herbicides |
y=-1, n=1 |
||
8.04 |
Tolerates, or benefits from, mutilation, cultivation, or fire |
y=1, n=-1 |
||
8.05 |
Effective natural enemies present locally (e.g. introduced biocontrol agents) |
y=-1, n=1 |
||
Total score: |
0 |
Supporting data:
Notes |
Source |
|
1.01 |
(1)No evidence |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
1.02 |
||
1.03 |
||
2.01 |
(1)Endemic to Fiji and thus far known only from Viti Levu, where it occurs in various types of forest at elevations from near sea level to about 1,000 m. |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
2.02 |
(1)Endemic to Fiji and thus far known only from Viti Levu, where it occurs in various types of forest at elevations from near sea level to about 1,000 m. |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
2.03 |
(1)All species are tender to cold and adaptable only to zones 10b and 11. (2)Hardiness: USDA Zone 10b: to 1.7 °C (35 °F) USDA Zone 11: above 4.5 °C (40 °F) |
(1)Riffle, R.L. and P. Craft. 2003. An Encyclopedia of Cultivated Palms.Timber Press. Portland, OR. (2)http://davesgarden.com/guides/pf/go/66263/ [Accessed 07 Nov 2008] |
2.04 |
(1)Endemic to Fiji and thus far known only from Viti Levu, where it occurs in various types of forest at elevations from near sea level to about 1,000 m. |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
2.05 |
No evidence of widespread propagation outside of botanical gardens or as potted plants (1)These palms are good candidates for growing in containers or indoors with ample moisture. |
(1)Riffle, R.L. and P. Craft. 2003. An Encyclopedia of Cultivated Palms.Timber Press. Portland, OR. |
3.01 |
(1)No evidence |
(1)http://www.hear.org/gcw/scientificnames/scinameb.htm [Accessed 17 Nov 2008] |
3.02 |
(1)No evidence |
(1)http://www.hear.org/gcw/scientificnames/scinameb.htm [Accessed 17 Nov 2008] |
3.03 |
(1)No evidence |
(1)http://www.hear.org/gcw/scientificnames/scinameb.htm [Accessed 17 Nov 2008] |
3.04 |
(1)No evidence |
(1)http://www.hear.org/gcw/scientificnames/scinameb.htm [Accessed 17 Nov 2008] |
3.05 |
(1)No evidence |
(1)http://www.hear.org/gcw/scientificnames/scinameb.htm [Accessed 17 Nov 2008] |
4.01 |
(1)No evidence |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
4.02 |
(1)No evidence |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
4.03 |
(1)No evidence |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
4.04 |
Unknown |
|
4.05 |
(1)No evidence of toxicity in species or genus (2)No evidence from cultivation |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. (2)Riffle, R.L. and P. Craft. 2003. An Encyclopedia of Cultivated Palms.Timber Press. Portland, OR. |
4.06 |
Unknown |
|
4.07 |
(1)Edible seeds [no mention of allergies or toxicity in this species or entire genus] |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
4.08 |
(1)Unlikely, considering solitary habit and growth in moist, tropical conditions |
(1)http://www.pacsoa.org.au/palms/Balaka/longirostris.html [Accessed 17 Nov 2008] |
4.09 |
(1)Cultivation: Warm sheltered and moist. Tropical requirements. [images from website show palm growing in shaded understory] (2)"all are found in the undergrowth of the rainforest" |
(1)http://www.pacsoa.org.au/palms/Balaka/longirostris.html [Accessed 17 Nov 2008] (2)Riffle, R.L. and P. Craft. 2003. An Encyclopedia of Cultivated Palms.Timber Press. Portland, OR. |
4.10 |
(1)They need partial shade when young, protection from strong winds, and a rich, moist but very fast-draining soil. |
(1)Riffle, R.L. and P. Craft. 2003. An Encyclopedia of Cultivated Palms.Timber Press. Portland, OR. |
4.11 |
(1)Trunks to 7 m high and 5 cm in diameter |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
4.12 |
No evidence (1)Description: A medium sized, solitary palm with a tall thin trunk and caryotoid leaves. |
(1)http://www.pacsoa.org.au/palms/Balaka/longirostris.html [Accessed 17 Nov 2008] |
5.01 |
Terrestrial |
|
5.02 |
Arecaceae |
|
5.03 |
Arecaceae |
|
5.04 |
(1)Solitary, erect, pleonanthic, monoecious palms |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
6.01 |
(1)No evidence |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
6.02 |
(1)Propagation Methods: From seed |
(1)http://davesgarden.com/guides/pf/go/66263/ [Accessed 07 Nov 2008] |
6.03 |
Unknown |
|
6.04 |
(1)Solitary, erect, pleonanthic, monoecious palms |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
6.05 |
(1)palms predominantly entomophilous |
(1)Zomlefer, W.B. 1994. Guide to Flowering Plant Families. The University of North Carolina Press. Chapel Hill, NC. |
6.06 |
No evidence (1)Propagation Methods: From seed |
(1)http://davesgarden.com/guides/pf/go/66263/ [Accessed 07 Nov 2008] |
6.07 |
Unknown |
|
7.01 |
(1)"fruit fusiform-ellipsoid, orange-red, (2.5-) 3.2-3.8 cm long, 1.1-1.6 cm in diameter [no means of external attachment] |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
7.02 |
(1)Ornamental |
(1)Riffle, R.L. and P. Craft. 2003. An Encyclopedia of Cultivated Palms.Timber Press. Portland, OR. |
7.03 |
No evidence (1)"fruit fusiform-ellipsoid, orange-red, (2.5-) 3.2-3.8 cm long, 1.1-1.6 cm in diameter [fruit fairly large & unlikely to become produce contaminant] |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
7.04 |
(1)"fruit fusiform-ellipsoid, orange-red, (2.5-) 3.2-3.8 cm long, 1.1-1.6 cm in diameter [fleshy-fruited] |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
7.05 |
Unknown if fruits or seeds are buoyant |
|
7.06 |
(1)"fruit fusiform-ellipsoid, orange-red, (2.5-) 3.2-3.8 cm long, 1.1-1.6 cm in diameter [fleshy-fruited] |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
7.07 |
(1)"fruit fusiform-ellipsoid, orange-red, (2.5-) 3.2-3.8 cm long, 1.1-1.6 cm in diameter [no means of external attachment] |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
7.08 |
(1)"fruit fusiform-ellipsoid, orange-red, (2.5-) 3.2-3.8 cm long, 1.1-1.6 cm in diameter [fleshy-fruited] |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
8.01 |
(1)No evidence, and relatively medium sized tree with fairly large fruits |
(1)Smith, A.C. 1979. Flora Vitiensis Nova. A New Flora of Fiji (Spermatophytes Only). Volume 1. Pacific Tropical Botanical Garden. Lawai, USA. |
8.02 |
Unknown [no information on seed bank or seed storage] |
|
8.03 |
Unknown [not known to be naturalized anywhere and therefore no information on control] |
|
8.04 |
Unknown |
|
8.05 |
Unknown |
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