❓ Hon Giz Watson questions the Minister for the Environment regarding introduced species on Barrow Island due to WAPET's and Chevron's activities. The Minister confirms the presence of tramp ants, spiders, and a springtail, and provides a breakdown of total introduced species.
AnsweredQoN 2872Legislative Council
QuestionView source ↗
Regarding WAPET’s and then Chevron’s activities on Barrow Island over the last forty years, I ask -
(1) Is the Minister aware that introduced tramp ants have now been discovered on Barrow Island?
(2) Is the Minister aware that an introduced species of spider has now been discovered on Barrow Island?
(3) Have any other introduced species been discovered since the production of the Gorgon Environmental Social and Economic Review?
(4) What is the total number of introduced species that have been discovered on Barrow, including those species that were discovered and then eradicated?
(1) Is the Minister aware that introduced tramp ants have now been discovered on Barrow Island?
(2) Is the Minister aware that an introduced species of spider has now been discovered on Barrow Island?
(3) Have any other introduced species been discovered since the production of the Gorgon Environmental Social and Economic Review?
(4) What is the total number of introduced species that have been discovered on Barrow, including those species that were discovered and then eradicated?
AnswerView source ↗
Answered
1 December 2005
Responded by
Minister for Education and Training representing the Minister for the Environment
Response time
22 days
The Minister for the Environment; Science has provided the following response: (1) Yes, I have been informed that the tramp ant (Paratrechina longicornis) was sampled in May 2005 at two locations on Barrow Island. It was formally identified in July 2005. (2) Yes, two species have been discovered. They are the Daddy Long Legs (Crossopiza lyoni) and Wall Spider (Oecobius navus). (3) I am advised that a springtail has been identified during recent baseline surveys. The identification of the specimen to species level is yet to be confirmed. (4) It is understood that the total numbers of introduced species are: · Fifteen non-indigenous plant species (four were deliberately introduced and persist, eleven are classified as environmental weeds, and six of the environmental weeds persist on the island); · Three mammals and one amphibian, all of which have been eradicated; and · Five invertebrates (two spiders, a cockroach, a tramp ant and a springtail), all of which persist.
(1) Yes, I have been informed that the tramp ant (Paratrechina longicornis) was sampled in May 2005 at two locations on Barrow Island. It was formally identified in July 2005. (2) Yes, two species have been discovered. They are the Daddy Long Legs (Crossopiza lyoni) and Wall Spider (Oecobius navus). (3) I am advised that a springtail has been identified during recent baseline surveys. The identification of the specimen to species level is yet to be confirmed. (4) It is understood that the total numbers of introduced species are: · Fifteen non-indigenous plant species (four were deliberately introduced and persist, eleven are classified as environmental weeds, and six of the environmental weeds persist on the island); · Three mammals and one amphibian, all of which have been eradicated; and · Five invertebrates (two spiders, a cockroach, a tramp ant and a springtail), all of which persist.
(2) Yes, two species have been discovered. They are the Daddy Long Legs (Crossopiza lyoni) and Wall Spider (Oecobius navus). (3) I am advised that a springtail has been identified during recent baseline surveys. The identification of the specimen to species level is yet to be confirmed. (4) It is understood that the total numbers of introduced species are: · Fifteen non-indigenous plant species (four were deliberately introduced and persist, eleven are classified as environmental weeds, and six of the environmental weeds persist on the island); · Three mammals and one amphibian, all of which have been eradicated; and · Five invertebrates (two spiders, a cockroach, a tramp ant and a springtail), all of which persist.
(3) I am advised that a springtail has been identified during recent baseline surveys. The identification of the specimen to species level is yet to be confirmed. (4) It is understood that the total numbers of introduced species are: · Fifteen non-indigenous plant species (four were deliberately introduced and persist, eleven are classified as environmental weeds, and six of the environmental weeds persist on the island); · Three mammals and one amphibian, all of which have been eradicated; and · Five invertebrates (two spiders, a cockroach, a tramp ant and a springtail), all of which persist.
(4) It is understood that the total numbers of introduced species are: · Fifteen non-indigenous plant species (four were deliberately introduced and persist, eleven are classified as environmental weeds, and six of the environmental weeds persist on the island); · Three mammals and one amphibian, all of which have been eradicated; and · Five invertebrates (two spiders, a cockroach, a tramp ant and a springtail), all of which persist.
· Fifteen non-indigenous plant species (four were deliberately introduced and persist, eleven are classified as environmental weeds, and six of the environmental weeds persist on the island); · Three mammals and one amphibian, all of which have been eradicated; and · Five invertebrates (two spiders, a cockroach, a tramp ant and a springtail), all of which persist.
(1) Yes, I have been informed that the tramp ant (Paratrechina longicornis) was sampled in May 2005 at two locations on Barrow Island. It was formally identified in July 2005. (2) Yes, two species have been discovered. They are the Daddy Long Legs (Crossopiza lyoni) and Wall Spider (Oecobius navus). (3) I am advised that a springtail has been identified during recent baseline surveys. The identification of the specimen to species level is yet to be confirmed. (4) It is understood that the total numbers of introduced species are: · Fifteen non-indigenous plant species (four were deliberately introduced and persist, eleven are classified as environmental weeds, and six of the environmental weeds persist on the island); · Three mammals and one amphibian, all of which have been eradicated; and · Five invertebrates (two spiders, a cockroach, a tramp ant and a springtail), all of which persist.
(2) Yes, two species have been discovered. They are the Daddy Long Legs (Crossopiza lyoni) and Wall Spider (Oecobius navus). (3) I am advised that a springtail has been identified during recent baseline surveys. The identification of the specimen to species level is yet to be confirmed. (4) It is understood that the total numbers of introduced species are: · Fifteen non-indigenous plant species (four were deliberately introduced and persist, eleven are classified as environmental weeds, and six of the environmental weeds persist on the island); · Three mammals and one amphibian, all of which have been eradicated; and · Five invertebrates (two spiders, a cockroach, a tramp ant and a springtail), all of which persist.
(3) I am advised that a springtail has been identified during recent baseline surveys. The identification of the specimen to species level is yet to be confirmed. (4) It is understood that the total numbers of introduced species are: · Fifteen non-indigenous plant species (four were deliberately introduced and persist, eleven are classified as environmental weeds, and six of the environmental weeds persist on the island); · Three mammals and one amphibian, all of which have been eradicated; and · Five invertebrates (two spiders, a cockroach, a tramp ant and a springtail), all of which persist.
(4) It is understood that the total numbers of introduced species are: · Fifteen non-indigenous plant species (four were deliberately introduced and persist, eleven are classified as environmental weeds, and six of the environmental weeds persist on the island); · Three mammals and one amphibian, all of which have been eradicated; and · Five invertebrates (two spiders, a cockroach, a tramp ant and a springtail), all of which persist.
· Fifteen non-indigenous plant species (four were deliberately introduced and persist, eleven are classified as environmental weeds, and six of the environmental weeds persist on the island); · Three mammals and one amphibian, all of which have been eradicated; and · Five invertebrates (two spiders, a cockroach, a tramp ant and a springtail), all of which persist.
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