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U.S. Geological Survey Open-File Report 2012-1038

Tidal Wetlands of the Yaquina and Alsea River Estuaries, Oregon: Geographic Information Systems Layer Development and Recommendations for National Wetlands Inventory Revisions

Appendix A

Landscapes and vegetation present across study areas in Yaquina and Alsea estuaries, Oregon.

Appendix figure A1

Figure A1.  Photograph of tidal marsh dominated by Deschampsia cespitosa (tufted hairgrass) at prioritization site A5, fig. 7 at Eckman Island in the Alsea estuary, Oregon. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, September 2010. [larger version]

Appendix figure A2

Figure A2.  Photograph of Agrostis stolonifera (creeping bentgrass) at prioritization site A31 in fig. 7 in the Alsea estuary, Oregon. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, September 2010. [larger version]

Appendix figure A3

Figure A3.  Photograph of Hordeum jubatum (foxtail barley) at prioritization site Y1, fig. 6 in the Yaquina estuary, Oregon. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, August 2010. [larger version]

Appendix figure A4

Figure A4.  Photograph of Juncus effusus (common rush) at prioritization site A24 in fig. 7 in the Alsea estuary, Oregon. This species tends to be found at high elevations in lower salinity tidal marshes. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, November 2010. [larger version]

Appendix figure A5

Figure A5.  Photograph of Juncus balticus ssp. ater (Baltic rush) at prioritization site Y1 in fig. 6 in the Yaquina estuary, Oregon. Several species of rushes are found in Oregon tidal wetlands. Baltic rush is the most frequently encountered species in high marsh. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, May 2010. [ larger version ]

Appendix figure A6

Figure A6.  Photograph of Carex lyngbyei (Lyngybe’s sedge) at prioritization site Y40 in fig. 6 in Poole Slough, Yaquina estuary, Oregon. One of the most common tidal marsh species in the Pacific Northwest, Lyngybe’s sedge grows in both low and high marsh. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, April 2011. [larger version]

Appendix figure A7

Figure A7. Photograph of Carex obnupta (slough sedge) at prioritization site A17 in fig. 7 in the Alsea estuary, Oregon. Slough sedge grows in the upper marsh in less saline regions of the estuaries and can also be found in freshwater wetlands. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, September 2010. [larger version]

Appendix figure A8

Figure A8.  Photograph of Triglochin maritimum (seaside arrowgrass) at prioritization site Y40 in fig. 6 in Poole Slough, Yaquina estuary, Oregon. Seaside arrowgrass is a succulent perennial forb commonly found in low tidal marsh. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, May 2010.[larger version]

Appendix figure A9

Figure A9.  Photograph of Picea sitchensis (Sitka spruce) at the edge of a marsh along Drift Creek at prioritization site A28 in fig. 7 in the Alsea estuary, Oregon. Sitka spruce is the principal foundation species of brackish tidal swamps in Oregon. It can also be found growing on nurse logs in estuarine marshes. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, December 2011. [larger version]

Appendix figure A10

Figure A10.  Photograph of black twinberry (Lonicera involucrata) growing on the bank of a tidal channel in tidal swamp at prioritization site Y28 in fig. 6 in the Yaquina estuary, Oregon. Trees in the background are Sitka spruce, also growing on the tidal channel banks. Summer surface water salinity at this site is in the mesohaline range (8–9). Photograph by Laura Brophy, Green Point Consulting, September 2006. [ larger version ]

Appendix figure A11

Figure A11.  Photograph of salt-stressed black twinberry (Lonicera involucrata) with epiphytic lichens and mosses in emergent tidal marsh along the main stem of the Alsea River, Oregon at prioritization site A17 in fig. 7. The stressed condition of the specimen may be due to high salinity. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, September 2010. [larger version]

Appendix figure A12

Figure A12.  Photograph of scrub shrub tidal wetland at prioritization site Y40 in fig. 6 in upper Poole Slough, Yaquina estuary, Oregon. Dominant shrubs are black twinberry (Lonicera involucrata) and Pacific crabapple (Malus fusca). Photograph by Christopher Janousek, U.S. Environmental Protection Agency, September 2010. [ larger version ]

Appendix figure A13

Figure A13.  Photograph of low marsh and algal-dominated mudflats at prioritization site Y34 in fig. 6 near the mouth of McCaffery Slough in the Yaquina estuary, Oregon. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, August 2010. [larger version]

Appendix figure A14

Figure A14.  Photograph of tidal marsh at prioritization site Y30 in fig. 6 in the upper Yaquina estuary with Phalaris arundinacea (reed canarygrass) growing above other emergent vegetation (e.g., Carex, Potentilla). Photograph by Christopher Janousek, U.S. Environmental Protection Agency, July 2010. [larger version]

Appendix figure A15

Figure A15.  Photograph of red alder (Alnus rubra) on the margin of tidal marsh at prioritization site A27 in fig. 7 in the Alsea River estuary, Oregon. Grass in the foreground is Pacific reedgrass (Calamagrostis nutkaensis), typical of the ecotone between brackish tidal marsh and brackish tidal swamp. Photography by Laura Brophy, Green Point Consulting, July 2005. [ larger version ]

Appendix figure A16

Figure A16.  Photograph of red alder (Alnus rubra) growing from a nurse log at prioritization site Y1 in fig. 6 in the lower Yaquina estuary, Oregon. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, November 2010. [larger version]

Appendix figure A17

Figure A17.  Photograph of low marsh vegetation in a saline marsh at prioritization site Y1 in fig. 6 in the lower Yaquina estuary, Oregon. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, August 2010. [larger version]

Appendix figure A18

Figure A18.  Photograph of Achillea millefolium (common yarrow) flowers in foreground with Symphyotrichum subspicatum (Douglas aster) and Grindelia stricta (coastal gumweed) in background found at prioritization site Y1 in fig. 6 in the Yaquina estuary, Oregon. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, August 2010. [larger version]

Appendix figure A19

Figure A19.  Photograph of high marsh dominated by Carex lyngbyei and Agrostis stolonifera at prioritization site Y30 in fig. 6 in the Yaquina estuary, Oregon. Photograph by Laura Brophy, Green Point Consulting, September 2006. [ larger version ]

Appendix figure A20

Figure A20.  Photographs of Potentilla anserina (Pacific silverweed) at (a) prioritization site Y13a in fig. 6 Critesers Marsh in the Yaquina estuary, Oregon and (b) prioritization site A30 in fig. 7 in the Alsea estuary, Oregon. A member of the rose family, Pacific silverweed is a common species in high tidal marsh from Alaska to California. Photographs by Christopher Janousek, U.S. Environmental Protection Agency, (a) taken in April 2010 and (b) taken in October 2010. [larger version]

Appendix figure A21

Figure A21.  Photograph of Heracleum lanatum (cow parsnip) at prioritization site Y13a in fig. 6 in Critesers Marsh in the Yaquina estuary, Oregon. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, May 2010. [larger version]

Appendix figure A22

Figure A22.  Photograph of a small tributary in estuarine emergent marsh at prioritization site Y40 in fig. 6 in upper Poole Slough in the Yaquina estuary, Oregon. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, August 2010. [larger version]

Appendix figure A23

Figure A23.  Photograph of estuarine emergent marsh, including a small patch of tall Schoenoplectus sp(p)., at prioritization site Y26 in fig. 6 at Mill Creek in the Yaquina estuary, Oregon. This wetland was formerly designated by the National Wetlands Inventory as palustrine marsh. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, August 2010. [larger version]

Appendix figure A24

Figure A24.  Photograph of cattail (Typha latifolia) marsh at prioritization site Y27 in fig. 6 in the upper Yaquina River, Oregon. This is a restored tidal wetland, formerly diked; it was previously classified in the National Wetlands Inventory as a seasonally-flooded palustrine marsh with no diking modifier. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, September 2010. [larger version]

Appendix figure A25

Figure A25.  Photograph of Oenanthe sarmentosa (water parsley) submerged at high tide at prioritization site Y28 in fig. 6 in the Yaquina estuary, Oregon. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, November 2010. [larger version]

Appendix figure A26

Figure A26.  Photograph of Eleocharis palustris (common spike rush) near prioritization site Y29 in fig. 6 growing at the edge of the river in the upper part of the Yaquina estuary, Oregon. This species is found in lower salinity wetlands. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, August 2010. [larger version]

Appendix figure A27

Figure A27.  Photograph of low marsh at prioritization site A32 in fig. 7 in the saline portion of the Alsea estuary, Oregon (mouth of Lint Slough). Photograph by Laura Brophy, Green Point Consulting, September 2003. [ larger version ]

Appendix figure A28

Figure A28.  Photograph of Sarcocornia perennis (pickleweed) at prioritization site A30 in fig. 7 in the Alsea estuary, Oregon. Pickleweed is commonly found in saline low marsh habitat but can also occur at higher tidal elevations in brackish parts of Oregon’s estuaries. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, October 2010. [larger version]

Appendix figure A29

Figure A29.  Photograph of tidal marsh and channel banks covered with diatoms and green algae at prioritization site A31 in fig. 7 in the Alsea estuary, Oregon. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, September 2010. [larger version]

Appendix figure A30

Figure A30.  Photograph of tidal freshwater zone near prioritization site A39 in fig. 7 in Drift Creek, a tidally-influenced palustrine system in the Alsea River Estuary, Oregon. Photograph by Laura Brophy, Green Point Consulting, August 2005. [ larger version ]

Appendix figure A31

Figure A31.  Photograph of Drift Creek and adjoining tidal marshes at prioritization site A26 in fig. 7 in the Alsea estuary, Oregon. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, November 2010. [larger version]

Appendix figure A32

Figure A32.  Photograph of Angelica lucida (seawatch angelica) at prioritization site A36 in fig. 7 close to Eckman Lake in the Alsea estuary, Oregon. Photograph by Christopher Janousek, U.S. Environmental Protection Agency, October 2010. [larger version]

First posted May 10, 2013

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