Grandidierella japonica

Invasion History

First Non-native North American Tidal Record: 1966
First Non-native West Coast Tidal Record: 1966
First Non-native East/Gulf Coast Tidal Record: 2013

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General Invasion History:

Grandidierella japonica was originally described from Abashiri, Hokkaido, Japan (Lowry et al. 2009). Its native range is from the southern Sea of Okhotsk to the East China Sea (Chapman and Dorman 1975; Huang 2001). It often occurs in brackish estuaries, in fine mud, and sometimes in oyster beds and fouling. It has been introduced to the Northeast Pacific, first collected in 1966 in San Francisco Bay, California and now ranges from Baja California, Mexico to the Fraser River Delta, British Columbia (Lee et al. 2008; Pilgrim et al. 2013). Other introduced populations are known from New South Wales, Australia (first record in 1981, Lowry et al. 2015); Oahu, Hawaii (first record in 1996, Muir 1997; Carlton and Eldredge 2009); and Europe (Smith 1998; Jourde et al. 2013).

North American Invasion History:

Invasion History on the West Coast:

Grandidierella japonica was first collected in Dutchman Slough, near Vallejo, California (CA) at the mouth of Napa River in 1966 (Chapman and Dorman 1975). Subsequently, it was collected in many other locations in San Francisco Bay, including San Pablo Bay, the central Bay, the Napa and Petaluma Rivers, and South San Francisco Bay (Chapman and Dorman 1975; Cohen and Carlton 1995). It was soon found in adjacent estuaries, including Tomales Bay in 1969, Bolinas Lagoon in 1971, and Drakes Estero in 1972 (Chapman and Dorman 1975; Carlton 1979). However, it was not reported in Bodega Harbor until 2002 (Lee 2008).

To the south of San Francisco Bay, G. japonica was first collected in Elkhorn Slough in 1980 and Newport Bay in 1979 (Greenstein and Tiefenthaler 1997), but discoveries of this amphipod in many other California estuaries are more recent. It was found in Morro Bay in 1999 (Lee 2008) and was discovered in 15 southern California bays, lagoons and harbors from Santa Barbara to the Tijuana River estuary in 1995 to 2002 . The invaded estuaries included major shipping harbors (Port Hueneme in 2000; Los Angeles-Long Beach in 1998; San Diego in 1997), smaller recreational boat harbors (e.g., Channel Islands Harbor in 1998; Mission Bay in 1997) and small semi-isolated lagoons (Mugu Lagoon in 1999; Los Penasquitos Lagoon in 1996; and Tijuana River Estuary in 1995) (Cohen et al. 2002; Fairey et al. 2002; Ranasinghe et al. 2005; Lee 2008). The current southern limit for G. japonica, reached by 2004, is Bahia San Quintin, Mexico (Chapman 2007; Lee 2008).

Grandidierella japonica's spread to the north was also spotty. It was first reported in Humboldt Bay, CA and Willapa Bay, Washington (WA) in 1985 (Cohen et al. 2002; Boyd et al. 2002) and Coos Bay, Oregon and Puget Sound, WA in 1977 (Carlton 1989; Lee 2008). Reported occurrences in 10 intervening estuaries (Rogue River, Oregon-Grays Harbor, Washington) were much later (1994-2002), probably reflecting the occurrences of surveys. Surprisingly, the first record in the better-sampled Columbia River was in 1999 (Sytsma et al. 2004). The present northern limit of G. japonica's northern range is the Fraser River estuary, near Vancouver, British Columbia (Chapman 2007; Lee 2008).

Possible vectors to the West Coast of North America, include ballast water, fouling, and imports of Pacific oysters from Japan. Fouling of fishing and recreational boats is a likely vector for coastwise transport to small harbors. A genetic study found two major clades, with Clade A occurring in the minority of specimens in San Francisco Bay and predominant in estuaries to the north, while Clade B predominates in San Francisco and San Diego Bays. The pattern indicates two invasions from separate sources, and a hub-and-spoke pattern of spread from larger ports to smaller estuaries (Pilgrim et al. 2013).

Invasion History in Hawaii:

In 1996, G. japonica was collected at several locations in Pearl Harbor, Oahu, Hawaii, and is established there (Muir 1997; Coles et al. 1999b).

Invasion History Elsewhere in the World:

In 1981, Grandidierella japonica was found to be established in the Hawkesbury River estuary, in New South Wales, Australia (Lowry et al. 2015). It has also invaded parts of Europe. In 1999, it was found in Southampton Water, England (Smith et al. 1999) and later in the Orwell estuary (Ashelby 2006), both on the English Channel. In 2010, it was found in Marennes-Oleron Bay, France (Jourde et al. 2013).

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Description

Grandidierella japonica has a somewhat cylindrical, slender and shallow body. The coxal plates are small and vary from triangular to trapezoidal in shape. The head lacks a rostrum, or has a vestigial one. In mature males, the 1st pereionite (body segment) bears a medio-ventral spine. Antenna 1 is greater than half the body length, with 20 segments, 17 of which are on the flagellum. Antenna 2 is about 2/3 the length of Antenna 1, and has profuse, long setae. The eyes are large and dark (Chapman and Dorman 1975; Chapman 2007).

The gnathopods are sexually dimorphic in this family. Gnathopod 1 is greatly enlarged in males, and much larger than Gnathopod 2, but in both sexes, they are carpochelate, meaning that segments 6 (the propodus) and segment 7 (the dactyl) fold around segment 5 (carpus) when gripping. In males, segments 2 and 5 are greatly enlarged. Segment 5 has a distal thumb-like tooth. In females, Gnathopods 1 and 2 are roughly equal and Gnathopod 1 is subchelate, meaning that the dactyl (segment 7) folds up against the propodus (segment 6) at an acute angle. In both sexes, Gnathopod 2 is subchelate, but segment 2 is longer in females, than in males.

Pereiopods (walking legs) 6 and 7 are about twice the length of 2-4 with 7 being slightly longer than 6. The first two uropod segments are biramous, but uropod 3 is uniramous and elongated (3X longer than wide) with many spines which are round in cross-section. The largest male was 22 mm long and the largest female was 13 mm. The cuticle is mottled gray to gray brown. The black eyes and green eggs are useful distinguishing marks in the field. This amphipod builds U-shaped tubes in muddy bottoms. Description from Chapman and Dorman 1975, Chapman in Carlton 2007, and Lowry et al. 2001-2015.

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Taxonomy

Ecology

General:

Grandidierella japonica is a tube-building gammarid amphipod, occurring in coastal waters and estuaries (Chapman and Dorman 1975; Lee et al. 2008; Pilgrim et al. 2013). Gammarid amphipods have separate sexes, brooded embryos, and direct development (Bousfield 1973). Males reach larger sizes than females, with maxima of 22 and 13 mm respectively (Chapman and Dorman 1975). Females in Newport Bay, California, began carrying embryos at ~3.8 mm length and released broods of 10-40 juveniles (mean of 25). Embryo numbers tended to increase with the female's size. Breeding was year-round, but numbers of embryos were smaller in winter.  Females in culture released a mean of 40 offspring, with a maximum of 150, in a 35-day period (Greenstein and Tiefenthaler 1997).

Grandidierella japonica occurs over a wide latitudinal range, from cold-temperate to subtropical waters (Lee et al. 2008; Lowry et al. 2009; Pilgrim et al. 2013; Trott et al. 2020). This amphipod has been collected at salinities as low as 5 PSU in the Columbia River and San Francisco estuaries (Sytsma et al. 2004; Peterson and Vayssieres 2010). Grandidierella japonica builds a U-shaped tube in muddy substrates. A male and a female often share a tube. Habitats, include lower intertidal and subtidal muddy sand, mud with shells or brick fragments, mud among Widgeongrass (Ruppia sp.), Eelgrass (Zostera) sp. or Ulva, and in fouling communities on pilings or floats (Chapman and Dorman 1975; Ashelby 2006; Trott et al. 2020). In Tomales Bay, California, and in Marennes-Oléron Bay, France, it was found near Pacific Oyster (Crassotrea gigas) beds (Chapman and Dorman 1975; Jourde et al. 2013). Grandidierella japonica feeds on detritus, benthic diatoms, and suspended particles (Aikins and Kikuchi 2002; Chapman 2007; Whitcraft et al. 2008; Best et al. 2013). In the Tijuana estuary, G. japonica is an important prey item for a number of benthic-feeding fishes (Arrow goby- Clevelandia ios, Diamond Turbot- Hypsopsetta guttulata, Longjaw Mudsucker- Gillichthys mirabilis, and California Killifish- Fundulus parvipinnis) (West et al. 2003).

Food:

Phytoplankton, Detritus, benthic diatoms

Consumers:

Fishes

Trophic Status:

Suspension Feeder

SusFed

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Habitats

General Habitat	Unstructured Bottom	None
General Habitat	Oyster Reef	None
General Habitat	Marinas & Docks	None
General Habitat	Grass Bed	None
General Habitat	Rocky	None
Salinity Range	Mesohaline	5-18 PSU
Salinity Range	Polyhaline	18-30 PSU
Salinity Range	Euhaline	30-40 PSU
Tidal Range	Subtidal	None
Vertical Habitat	Epibenthic	None

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Tolerances and Life History Parameters

Maximum Temperature (ºC)	25	Field, Newport Bay, California (Greenstein and Tiefenthaler 1997)
Minimum Salinity (‰)	5	Columbia River estuary, field data (Sytsma et al. 2004)
Maximum Salinity (‰)	35	Typical euhaline salinity
Minimum Length (mm)	3.8	Smallest females bearing young (Greenstein and Tiefenthaler 1997)
Maximum Length (mm)	22	22 mm adult male, 13 mm adult female (Chapman and Dorman 1975)
Broad Temperature Range	None	Cold temperate-Warm temperate
Broad Salinity Range	None	Mesohaline-Euhaline

General Impacts

Grandidierella japonica is a widespread and abundant introduced amphipod on the West Coast. However, its ecological impacts have not been well-studied. It feeds by filtering suspended particles (phytoplankton and detritus), but also grazes epiphytic diatoms on seaweeds (Aikins and Kikuchi 2002).

Food/Prey- Grandidierella japonica is the predominant amphipod in the Tijuana River estuary, San Diego, California. It has become a major food item for several native fishes (Longjaw Mudsucker- Gillichthys mirabilis; Staghorn Sculpin- Leptocottus armatus; and California Halibut- Paralichthys californicus) (West et al. 2003). In the Tijuana estuary, this amphipod was a major user of detritus from invasive Tamarix shrubs (Whitcraft et al. 2008), potentially transferring this resource from the marsh sediments to higher trophic levels.

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Regional Impacts

P010	Tijuana Estuary		Ecological Impact	Food/Prey
Food/Prey- Grandidierella japonica is the predominant amphipod in the Tijuana River estuary, San Diego, California. It has become a major food item for several native fishes (Longjaw Mudsucker-Gillichthys mirabilis; Staghorn Sculpin- Leptocottus armatus; California Halibot- Paralichthys californicus (West et al. 2003). In the Tijuana estuary, this amphipod was a major user of detritus from invasive Tamarix shrubs (Whitcraft et al. 2008), potentially transferring this resource from the marsh sediments to higher trophic levels.
NEP-VI	Pt. Conception to Southern Baja California		Ecological Impact	Food/Prey
Food/Prey- Grandidierella japonica is the predominant amphipod in the Tijuana River estuary, San Diego, California. It has become a major food item for several native fishes (Longjaw Mudsucker-Gillichthys mirabilis; Staghorn Sculpin- Leptocottus armatus; California Halibot- Paralichthys californicus (West et al. 2003). In the Tijuana estuary, this amphipod was a major user of detritus from invasive Tamarix shrubs (Whitcraft et al. 2008), potentially transferring this resource from the marsh sediments to higher trophic levels.
CA	California		Ecological Impact	Food/Prey
Food/Prey- Grandidierella japonica is the predominant amphipod in the Tijuana River estuary, San Diego, California. It has become a major food item for several native fishes (Longjaw Mudsucker-Gillichthys mirabilis; Staghorn Sculpin- Leptocottus armatus; California Halibot- Paralichthys californicus (West et al. 2003). In the Tijuana estuary, this amphipod was a major user of detritus from invasive Tamarix shrubs (Whitcraft et al. 2008), potentially transferring this resource from the marsh sediments to higher trophic levels.

References

Aikins, Samuel; Kikuchi, Eisuke (2002) Grazing pressure by amphipods on microalgae in Gamo Lagoon, Japan, Marine Ecology Progress Series 245: 171-179

Ariyama, Hiroyki (2004) Nine species of the genus Aoroides (Crustacea: Amphipoda: Aoridae) from Osaka Bay, central Japan., Publication of the Seto Marine Biological Laboratory 40(1/2): 1-66

Ashelby, Chris (2006) Records of the introduced amphipod Grandidierella japonica Stephensen 1938 (Crustacea: Amphipoda: Gammaridea: Aoridae) from the Orwell estuary, Suffolk, Suffolk Natural History <missing volume>: <missing location>

Associated Press (12/2021) Lummi Nation declares disaster after invasive crab arrives, Seattle Times <missing volume>: <missing location>

Berkenbusch, Katrin; Rowden, Ashley A. (2007) An examination of the spatial and temporal generality of the influence of ecosystem engineers on the composition of associated assemblages., Aquatic Ecology 41: 129-147

Best, R. J.; Caulk, N. C.; Stachowicz, J. J. (2013) Trait vs. phylogenetic diversity as predictors of competition and community composition in herbivorous marine amphipods, Ecology Letters 16: 72-80

Bousfield, E.L. (1973) <missing title>, Comstock Publishing Associates, Ithaca, NY. Pp. <missing location>

Boyd, Milton J.; Mulligan, Tim J; Shaughnessy, Frank J. (2002) <missing title>, California Department of Fish and Game, Sacramento. Pp. 1-118

California Department of Fish and Wildlife (2014) Introduced Aquatic Species in California Bays and Harbors, 2011 Survey, California Department of Fish and Wildlife, Sacramento CA. Pp. 1-36

Carlton, James T. (1979) History, biogeography, and ecology of the introduced marine and estuarine invertebrates of the Pacific Coast of North America., Ph.D. dissertation, University of California, Davis. Pp. 1-904

Carlton, James T. (1989) Man's role in changing the face of the ocean: biological invasions and implications for conservation of near-shore environments, Conservation Biology 3(3): 265-273

Carlton, James T. (1989) <missing title>, <missing publisher>, <missing place>. Pp. <missing location>

Carlton, James T.; Eldredge, Lucius (2009) Marine bioinvasions of Hawaii: The introduced and cryptogenic marine and estuarine animals and plants of the Hawaiian archipelago., Bishop Museum Bulletin in Cultural and Environmental Studies 4: 1-202

Chapman, J.W., Dorman, J.A. (1975) Diagnosis, systematics, and notes on Grandidierella japonica (Amphipoda: Gammaridea) and its introduction to the Pacific coast of the United States, Bulletin of the Southern California Academy of Sciences 74: 104-108

Chapman, John W. 2005 Aoridae. <missing URL>



Chapman, John W. (2007) The Light and Smith Manual: Intertidal invertebrates from Central California to Oregon (4th edition), University of California Press, Berkeley CA. Pp. 545-611

Child, C. Allan (1979) Shallow-water pycnogonida of the isthmus of Panama and the coasts of middle america, Smithsonian Contributions to Zoology 293: 1-86

Chmura, Gail L. ; Chase, Patrick; Bercovitch, Jason (1997) Climatic Controls of the Middle Marsh Zone in the Bay of Fundy, Estuaries 20(4): 689-699

Cohen, Andrew N. (2004) <missing title>, San Francisco Estuary Institute, San Francisco CA. Pp. 1-50

Cohen, Andrew N. and 10 authors (2005) <missing title>, San Francisco Estuary Institute, Oakland CA. Pp. <missing location>

Cohen, Andrew N. and 12 authors (2002) Project report for the Southern California exotics expedition 2000: a rapid assessment survey of exotic species in sheltered coastal waters., In: (Eds.) . , Sacramento CA. Pp. 1-23

Cohen, Andrew N. and 22 authors (2001) <missing title>, Washington State Department of Natural Resources, Olympia. Pp. <missing location>

Cohen, Andrew N.; Carlton, James T. (1995) Nonindigenous aquatic species in a United States estuary: a case study of the biological invasions of the San Francisco Bay and Delta, U.S. Fish and Wildlife Service and National Sea Grant College Program (Connecticut Sea Grant), Washington DC, Silver Spring MD.. Pp. <missing location>

Cohen, Andrew; and 16 authors. (1998) <missing title>, Washington State Department of Natural Resources, Olympia, Washington. Pp. 1-37

Coles, S. L.; DeFelice, R. C.; Eldredge, L. G.; Carlton, J. T. (1999b) Historical and recent introductions of non-indigenous marine species into Pearl Harbor, Oahu, Hawaiian Islands., Marine Biology 135(1): 147-158

Fairey, Russell; Dunn, Roslyn; Sigala, Marco; Oliver, John (2002) Introduced aquatic species in California's coastal waters: Final Report, California Department of Fish and Game, Sacramento. Pp. <missing location>

Fernald, M. L.; Weatherby, A. (1916) The Genus Puccinellia in eastern North America, Rhodora 46(1-23): 1-23

Graening, G. O.; Rogers, D. Christopher; Holsinger, John R.; Barr, Cheryl; Bottorff, Richard (2012) Checklist of inland aquatic Amphipoda (Crustacea: Malacostraca) of California, Zootaxa 3544: 1-27

Greenstein, D. J.; Tiefenthaler, L. L. (1997) Reproduction and population dynamics of Grandidierella japonica in upper Newport Bay, Bulletin of the Southern California Academy of Sciences 96(1): 34-42

Hallan, Anders; Donald J. Colgan, Anderson, Laurie C.; Garcia, Adriana; . Chivas, Allan R (2013) A single origin for the limnetic–euryhaline taxa in the Corbulidae (Bivalvia), Zoologica Scripta 42(3): 278-287
doi:10.1111/zsc.12010

Hirayama, Akira (1965) Taxonomic studies on the shallow water gammaridean Amphipoda of west Kyushu, Japan ll. Corophiidae, Publications of the Seto Marine Biological Laboratory 28: 1-92

Howe, Emily R.; Simenstad, Charles A.; Toft, Jason D.; Cordell, Jeffrey R.; Bollens, Stephen M. (2014) Macroinvertebrate prey availability and fish diet selectivity in relation to environmental variables in natural and restoring North San Francisco Bay tidal marsh channels, San Francisco Estuary and Watershed Science 12(1): 1-46

Huang, Zongguo (Ed.), Junda Lin (Translator) (2001) Marine Species and Their Distributions in China's Seas, Krieger, Malabar, FL. Pp. <missing location>

Jourde, Jérôme; Sauriau, Pierre-Guy; Guenneteau, Stéphane; Caillot, Emmanuel (2013) First record of Grandidierella japonica Stephensen, 1938 (Amphipoda: Aoridae) from mainland Europe, BioInvasions Records 2(1): 51-55

Lee, Henry II; Reusser, Deborah; Nelson, Walter; Lamberson, Janet 2008 Changes in latitude, changes in attitude: Emerging biogeographic patterns of invasion in the northeast Pacific.. <missing URL>



Llansó, Roberto J.; Sillett, Kristine; Scott, Lisa (2011) <missing title>, Versar, Inc., Columbia MD. Pp. <missing location>

Lowry, J. K.; Berents, P. B.; Springthorpe, R. T. 2001-2015 Australian Amphipoda: Aoridae. <missing URL>



Mach, Megan E.; Levings, Colin D.; Chan, Kai M. A. (2016) Nonnative species in British Columbia eelgrass beds spread via shellfish aquaculture and stay for the mild climate, Estuaries and Coasts Published online: <missing location>

Maloney, E.,; Fairey, R.,; Lyman, A.,; Walton,Z.,; Sigala, M. (2007) <missing title>, California Department of Fish and Game, Sacramento cA. Pp. 116 pp.

Maloney, E.; Fairey, R.; Lyman, A.; Reynolds, K.; Sigala, M. (2006) <missing title>, California Department of Fish and Game, Office of Spill Prevention and Response, Sacramento. Pp. <missing location>

Mathieson, Arthur C.; Dawes, Clinton J. (2017) Seaweeds of the Northwest Atlantic, University of Massachusetts Press, Amherst MA. Pp. <missing location>

Muir, D. G. (1997) Records of the Hawaii Biological Survey for 1996: New records of peracarid crustaceans in Hawaii (Crustacea, Peracarida), Bishop Museum, Occasional Papers 49: 50-54

Nagata, Kizo (1960) Preliminary notes on benthic gammaridean amphipoda from the Zostera region of Mihara Bay, Seto Inland Sea, Japan, Publications of the Seto Marine Biological Laboratory 8(1): 163-182

Neira, Carlos; Grosholz, Lisa; Levin, Lisa A.; Blake, Rachael (2006) Mechanisms generating modification of benthos following tidal flat invasion by a Spartina hybrid., Ecological Applications 16(4): 1391-1404

Nichols, Frederic H.; Thompson, Janet K. (1985a) Time scales of change in the San Francisco Bay benthos., Hydrobiologia 129: 121-138

Okolodkov, Yuri B. and 7 authors (2007) Especies acuáticas no indígenas en México., Ciencia y Mar 11(32): 29-67

Pederson, Judith, and 13 authors (2021) 2019 Rapid Assessment Survey of marine bioinvasions of southern New England and New York, USA, with an overview of new records and range expansions, Bioinvasions Records 10(2): 22-–237

Peterson, Heather A.; Vayssieres, Marc (2010) Benthic assemblage variability in the upper San Francisco estuary: A 27-year retrospective, San Francisco Estuary and Watershed Science <missing volume>: published online

Pilgrim, Erik M.; Blum, Michael J.; Reusser, Deborah A.; Lee, Henry II; Darling, John A. (2013) Geographic range and structure of cryptic genetic diversity among Pacific North American populations of the non-native amphipod Grandidierella japonica, Biological Invasions 13(11): 2415-2428

Ranasinghe, J. Ananda and 6 authors. (2005) The prevalence of non-indigenous species in southern California embayments and their effects on benthic macroinvertebrate communities, Biological Invasions 7: 679-686

Robinson, April; Cohen, Andrew N.; Lindsey, Brie; Grenier, Letitia (2011) Distribution of macroinvertebrates across a tidal gradient, Marin County, California, San Francisco Estuary and Watershed Science 9(3): published online

Ruiz, Gregory M.; Geller, Jonathan (2018) Spatial and temporal analysis of marine invasions in California, Part II: Humboldt Bay, Marina del Re, Port Hueneme, and San Francisco Bay, Smithsonian Environmental Research Center & Moss Landing Laboratories, Edgewater MD, Moss Landing CA. Pp. <missing location>

Ruiz, Gregory; Geller, Jonathan (2021) Spatial and temporal analysis of marine invasions: supplemental studies to evaluate detection through quantitative and molecular methodologies, Marine Invasive Species Program, California Department of Fish and Wildlife, Sacramento CA. Pp. 153 ppl.

Salmon, Terry and 21 authors 2014-2022 California Fish Website. https://calfish.ucdavis.edu/



Siegfried, Clifford A.; Kopache, Mark E.; Knight, Allen W. (1980) The benthos of a portion of the Sacramento River (San Francisco Bay estuary) during a dry year, Estuaries 3(4): 296-307

Smith, Phil; Perrett, Julian, Garwood, Peter; Moore, Geoff (1998) Two additions to the UK marine fauna: Desdemona ornata Banse, 1957 (Polychaeta, Sabellidae) and Grandidierella japonica Stephensen, 1938 (Amphipoda, Gammaridea)., Newsletter of the Porcupine Marine Natural History Society 2: 8-11

Soors, Jan; de Beukelaer, Joram; Bezdenjesnji, Olja; Buerms, Dimitri; Lefranc, Charles; Speybroeck, Jeroen; Van de Meutter,Frank (2022) Two new alien crustacean invaders Grandidierella japonica (Stephensen, 1938) and Neomysis americana (S.I. Smith, 1873) in Belgium, BioInvasions Records 11: In press

Sytsma, Mark D.; Cordell, Jeffrey R.; Chapman, John W.; Draheim, Robyn, C. (2004) <missing title>, Center for Lakes and Reservoirs, Portland State University, Portland OR. Pp. <missing location>

Trott, Thomas J. (2004) Cobscook Bay inventory: a historical checklist of marine invertebrates spanning 162 years., Northeastern Naturalist 11(Special issue 2): 261-324

Wang, Chang-Fu; Ren, Xian-Qiu; Xu, Run-Lin (2010) Composition, abundance, and diversity of the Peracarida on different vegetation types in the Qi’ao-Dan’gan Island Mangrove Nature Reserve on Qi’ao Island in the Pearl River estuary, China, Zoological Studies 49(5): 608-615

Wasson, Kerstin; Zabin, C. J.; Bedinger, L.; Diaz, M. C.; Pearse J. S. (2001) Biological invasions of estuaries without international shipping: the importance of intraregional transport, Biological Conservation 102: 143-153

West, Janelle M.; Williams, Gregory D.; Madond, Sharook P.; Zedler, Joy B. (2003) Integrating spatial and temporal variability into the analysis of fish food web linkages in Tijuana Estuary, Environmental Biology of Fishes 67: 297-309

Whitcraft, Christine R.; Levin, Lisa A.; Talley, Drew; Crooks, Jeffrey A. (2008) Utilization of invasive tamarisk by salt marsh consumers., Oecologia 158: 259-272

Wilson, Sarah; Partridge, Valerie (2007) <missing title>, Washington State Department of Ecology, Olympia. Pp. 244

Wonham, Marjorie J.; Carlton, James T. (2005) Trends in marine biological invasions at local and regional scales: the Northeast Pacific Ocean as a model system, Biological Invasions 7: 369-392

Ximenes, Caroline Feijão; Cassano, Valéria; de Oliveira Carvalho, Maria de Fátima; Bandeira-Pedrosa, Maria Elizabeth; Gurgel,, Carlos Frederico D. (2017) Systematics of the genus Halimeda (Bryopsidales, Chlorophyta) in Brazil including the description of Halimeda jolyana sp. nov., Phytologia 56(4): 369-381
DOI: 10.2216/16-77.1

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