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NIS Species and Technology Fact Sheets

 

 

Species Fact Sheets

 

Look out for the European Green Crab poster (pdf/954KB)

See our one-page fact sheet on aquatic NIS in Alaska (pdf/537KB)

ALERT! The two NIS species pictured below have not been found in Prince William Sound, but pose a serious threat. Contact us if you think you have found either of these species.

	Chinese Mitten Crab (Eriocheir Sinensis) (pdf/118KB) Fur-like hairs on the claws of adults. Four spines on each side of carapace. Legs more than twice as long as the width of the carapace.
	European Green Crab (Carcinus maenas) (pdf/159KB) Five spines, or teeth, on each side of the fan-shaped carapace. Three rounded lobes on frontal area. Last pair of legs somewhat flattened.
Currently found along the West Coast of the United States, the Chinese Mitten Crab and the European Green Crab are considered a serious potential threat due to the proximity of their geographical distribution to Alaskan waters, their ability to survive and adapt in new environments, and the negative ecological impacts they have had in areas already invaded. See another photo of the Chinese mitten crab on the USFWS-Alaska Invasive Species Web site.

 

The following 15 non-indigenous species have been identified in Prince William Sound.

Fact sheets below (pdf format) describe each of the Prince William Sound NIS in detail, including information about biology and physiology, dispersal potential, and impacts and control.

	Atlantic Salmon (Chordata-Osteichtyes, Salmo salar) (134KB)
	Boring Sponge (Porifera, Cliona thosina) (135KB)
	Rockweed (Phaeophyta, Fucus cottoni) (121KB)
	Dead Man's Fingers (Chlorophyta, Codium fragile) (130KB)
	Single Horn Bryozoan (Bryozoa, Schizoporella unicornis) (110KB)
	Pacific Oyster (Mollusca-Bivalvia, Crassostrea gigas) (132KB)
	Tunicate (Chordata-Ascidiacea, Botrylloides violaceus) (115KB)
	Giant Sea Kelp (Phaeophyta, Macrocyctis integrifolia) (133KB)
	Foraminiferan (Sacodina-Foraminifera, Trochammina hadai) (120KB)
	Softshell Clam (Mollusca-Bivalvia, Mya arenaria) (129KB)
	Tube Dwelling Amiphipod (Crusacea- Amphipoda, Jassa sp. Jassa marmorata) (111KB)
	Capitellid Worm (Annelida-Polychaeta, Heteromastus filiformis) (117KB)
no photo available	Red Alga NE Pacific (Rhodophyta, Ceramium sinicola) (263KB)
	Red Alga NW Pacific (Rhodophyta, Chroodactylon ramosum) (114KB)
no photo available	Brown Alga (Phaeophyta, Microspongium globosum) (112KB)

 

Ballast Water Treatment Technology Fact Sheets

PWSRCAC developed the following fact sheets (pdf format) to identify and describe ballast water treatment technologies that may be successfully used to control non-indigenous species introduction into Prince William Sound via crude oil tankers. Both shore-based treatment systems and tanker-based technologies are identified and described in the two general overview sheets below.

Ballast Water Treatment Options Overview (154KB)

Shore-based Treatment (170KB)

To assist in the consideration of shore-based and tanker-based technologies, PWSRCAC developed a ranking system that is included on all the technology fact sheets. The ranking system is explained in its own fact sheet below.

NIS Treatment Rating System (108KB)

The shore-based treatment systems and tanker-based technologies are further described in the 12 technologies sheets below.

Ballast Water Management—Clean and Recycled Ballast Water (258KB)

Ballast Water Management—Intake Minimization (159KB)

Ballast Water Management—Flow-Through Method (258KB)

Ballast Water Exchange—Sequential Method (258KB)

Thermal Treatment (93KB)

Deoxygenation (66KB)

Chemical Biocides—Ozone (171KB)

Chemical Biocides—Organic Acids and Other Disinfectants (181KB)

Physical Separation—Filtration Systems and Hydrocylones (270KB)

Ultrasonic (151KB)

Electronic Field Technology—Pulsed and Plasma (154KB)

Electro-Ionization Treatment—Electro-Ionization Magnetic Separation (EIMS) (158KB)

 

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