Pisidium compressum - Prime, 1852
Ridgedbeak Peaclam
Taxonomic Status: Accepted
Related ITIS Name(s): Pisidium compressum Prime, 1852 (TSN 81406)
Unique Identifier: ELEMENT_GLOBAL.2.107097
Element Code: IMBIV51040
Informal Taxonomy: Animals, Invertebrates - Mollusks - Other Mollusks
 
Kingdom Phylum Class Order Family Genus
Animalia Mollusca Bivalvia Veneroida Sphaeriidae Pisidium
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Concept Reference
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Concept Reference: Turgeon, D.D., J.F. Quinn, Jr., A.E. Bogan, E.V. Coan, F.G. Hochberg, W.G. Lyons, P.M. Mikkelsen, R.J. Neves, C.F.E. Roper, G. Rosenberg, B. Roth, A. Scheltema, F.G. Thompson, M. Vecchione, and J.D. Williams. 1998. Common and scientific names of aquatic invertebrates from the United States and Canada: Mollusks. 2nd Edition. American Fisheries Society Special Publication 26, Bethesda, Maryland: 526 pp.
Concept Reference Code: B98TUR01EHUS
Name Used in Concept Reference: Pisidium compressum
Taxonomic Comments: Many occurrences reported as varieties, such as Pisidium compressum var. arrosum, contortum, and contrarium, among several others reported by Burch (1975) and Mackie (2007),
Conservation Status
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NatureServe Status

Global Status: G5
Global Status Last Reviewed: 09Jan2015
Global Status Last Changed: 16Mar2004
Ranking Methodology Used: Ranked by calculator
Rounded Global Status: G5 - Secure
Reasons: This is a ubiquitous species with no significant threats at a global level.
Nation: United States
National Status: N5 (07Jun2004)
Nation: Canada
National Status: N5 (01Aug2017)

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States Alaska (SNR), Idaho (S5), Kansas (SNR), Kentucky (SU), Maryland (SNR), Massachusetts (SNR), Michigan (SNR), Minnesota (SNR), Montana (SNR), Nebraska (SNR), North Carolina (S5), Utah (S3S4), Virginia (S4), Wisconsin (SNR), Wyoming (SNR)
Canada Alberta (S4), British Columbia (S5), Manitoba (S4), New Brunswick (SU), Northwest Territories (S3S4), Ontario (S5), Prince Edward Island (SU), Quebec (SNR), Saskatchewan (S4), Yukon Territory (SU)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent: >2,500,000 square km (greater than 1,000,000 square miles)
Range Extent Comments: Range includes most of North America with gaps on the Atlantic coast; it is present in all Canadian provinces and territories (Mackie 2007).

Number of Occurrences: > 300
Number of Occurrences Comments: This species is represented by a large number of occurrences (subpopulations), much greater than 300 in each of Canada and USA.

Pearce and Evans (2008) documented it in Plummers Island (Middle Potomac River system), Maryland. This species is also known from Pleistocene deposits in the Black Hills of Fall River/Custer Cos., South Dakota (Jass et al., 2002). Lysne and Clark (2009) found it in the Bruneau River (survey area from Snake River confluence upstream to Hot Creek- 41 km) in Idaho. It has been documented in Alaska potentially in the southeast, North Gulf Coast, Upper Yukon River, and Mackenzie River (Baxter, 1987). Branson (1966) documented it in the Spring River in Kansas at a single site and Mackie and Huggins (1983) show the distribution of 17 occurrences in Kansas.

Population Size Comments: Total population size is unknown.

Overall Threat Impact: Low
Overall Threat Impact Comments: No major threats exist at the present time or for the foreseeable future. Pollution, changes in land use, and habitat modification such as drainage are potential and, in some areas, are continuing but scope is restricted.

Short-term Trend Comments: Trend over the past 10 years is uncertain but probably relatively stable.

Long-term Trend: Relatively Stable (<=10% change)
Long-term Trend Comments: A ubiquitous species with most likely long term stability because it is easily dispersed by a variety of dispersal mechanisms, rescue from neighboring subpopulations, ability to survive and reproduce in a wide variety of habitats, and tolerance of some hypoxia.

Other NatureServe Conservation Status Information

Distribution
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Global Range: (>2,500,000 square km (greater than 1,000,000 square miles)) Range includes most of North America with gaps on the Atlantic coast; it is present in all Canadian provinces and territories (Mackie 2007).

U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.

Map unavailable!:
Distribution data for U.S. states and Canadian provinces is known to be incomplete or has not been reviewed for this taxon.
Endemism: occurs (regularly, as a native taxon) in multiple nations

U.S. & Canada State/Province Distribution
United States AK, ID, KS, KY, MA, MD, MI, MN, MT, NC, NE, UT, VA, WI, WY
Canada AB, BC, MB, NB, NT, ON, PE, QC, SK, YT

Range Map
No map available.

Ecology & Life History
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Habitat Type: Freshwater
Non-Migrant: N
Locally Migrant: N
Long Distance Migrant: N
Riverine Habitat(s): BIG RIVER, CREEK, Low gradient, MEDIUM RIVER, Moderate gradient
Lacustrine Habitat(s): Deep water, Shallow water
Habitat Comments: Habitat includes creeks and rivers with fine to coarse sandy bottoms and moderate current, as well as shallow areas of small and large lakes; the largest densities are found in 1-5 m, but it has been collected down to 20 m (Mackie 2007). In Ontario, its distribution is limited by low pH, alkalinity, and hardness (Mackie and Flippance 1983b in Mackie 2007). It is tolerant of eutrophic waters but if its chemical requirements are not present, density are reduced in eutrophic waters (Mackie 2007).
Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 09Jan2015
NatureServe Conservation Status Factors Author: Mackie, G.L.
Element Ecology & Life History Edition Date: 09Jan2015
Element Ecology & Life History Author(s): Mackie, G.L.

Zoological data developed by NatureServe and its network of natural heritage programs (see Local Programs) and other contributors and cooperators (see Sources).

References
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  • Baxter, R. 1987. Mollusks of Alaska: a listing of all mollusks, freshwater, terrestrial, and marine reported from the State of Alaska, with locations of the species types, maximum sizes and marine depths inhabited. Shells and Sea Life, Bayside, California. 163 pp.

  • Branson, B.A. 1966a. A partial biological survey of the Spring River drainage in Kansas, Oklahoma and Missouri. Part I, collecting sites, basic limnological data, and mollusks. Transactions of the Kansas Academy of Science 69(3/4): 242-293.

  • Burch, J. B. 1972. Freshwater Sphaeriacean clams (Mollusca:Pelecypoda) of North America. EPA Biota of Freshwater Ecosystems Identification Manual No. 3. 31 pp.

  • Burch, J.B. 1975b. Freshwater Sphaeriacean Clams (Mollusca: Pelecypoda) of North America. Malacological Publications, Hamburg, Michigan. 96 pp.

  • Canadian Museum of Nature. P.O. Box 3443, Stn. "D", Ottawa. K1P 6P4.

  • Clarke, A.H. 1981a. The Freshwater Molluscs of Canada. National Museum of Natural Sciences, National Museums of Canada, D.W. Friesen and Sons, Ltd.: Ottawa, Canada. 446 pp.

  • General Status 2015, Environment Canada. 2015. Manitoba Mollusk species list and subnational ranks proposed by an expert.

  • Graf, D.L. and K.S. Cummings. 2014. MUSSELp: the freshwater mussels (Unionoida) of the world (and other less consequential bivalves), updated 14 January 2014. MUSSEL Project Web Site, http://www.mussel-project.net/.

  • Herrington, H.B. 1962. A revision of the Sphaeriidae of North America (Mollusca: Pelecypoda). Miscellaneous Publications, Museum of Zoology, University of Michigan, No. 118. 74 pp.

  • Jass, C.N., J.I. Mead, A.D. Morrison, and L.D. Agebroad. 2002. Late Pleistocene mollusks from the southern Black Hills, South Dakota. Western North American Naturalist, 62(2): 129-140.

  • La Rocque, A. 1967. Pleistocene Mollusca of Ohio. Department of Natural Resources, Division of Geological Survey Bulletin 62, Part 2. 113-365 + 8 plates.

  • Lee, J.S. 2000. Freshwater molluscs of British Columbia: assessments for all known or potential taxa. Unpubl. rep. submitted to the BC Conservation Data Centre, Minist. Envrion., Lands and Parks, Victoria, BC. 107pp.

  • Lysne, S.J. and W.H. Clark. 2009. Mollusc survey of the lower Bruneau River, Owyhee County, Idaho, U.S.A. American Malacological Bulletin 27:167-172.

  • Mackie, G. 2014. General Status rank assessment of freshwater molluscs of British Columbia. Prepared for Canadian Wildlife Service, Environment Canada. Gatineau, PQ.

  • Mackie, G.L. 2007. Biology of Freshwater Corbiculid and Sphaeriid Clams of North America. Ohio Biological Survey Bulletin New Series, 15(3): 436 pp.

  • Mackie, G.L. 2007. Biology of Freshwater Corbiculid and Sphaeriid Clams of North America. Ohio Biological Survey Bulletin New Series, 15(3):ix-436.

  • Mackie, G.L. and D.G. Huggins. 1983. Sphaeriacean clams of Kansas. Technical Publications of the State Biological Survey of Kansas, The University of Kansas. No.14, 91 pp.

  • Pearce, T.A. and R. Evans. 2008. Freshwater Mollusca of Plummers Island, Maryland. Bulletin of the Biological Society of Washington, 15: 20-30.

  • Royal British Columbia Museum. 675 Belleville Street, Victoria, BC. V8V 1X4.

  • Turgeon, D.D., J.F. Quinn, Jr., A.E. Bogan, E.V. Coan, F.G. Hochberg, W.G. Lyons, P.M. Mikkelsen, R.J. Neves, C.F.E. Roper, G. Rosenberg, B. Roth, A. Scheltema, F.G. Thompson, M. Vecchione, and J.D. Williams. 1998. Common and scientific names of aquatic invertebrates from the United States and Canada: Mollusks. 2nd Edition. American Fisheries Society Special Publication 26, Bethesda, Maryland: 526 pp.

  • Wildlife Management Information System (WMIS). 2006+. Geo-referenced wildlife datasets (1900 to present) from all projects conducted by Environment and Natural Resources, Government of the Northwest Territories, Canada.  Available at http://www.enr.gov.nt.ca/programs/wildlife-research/wildlife-management-information-services

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