Electronic Supplementary Material

For submission to: Wetlands

Hydrologic influences on plant community structure in vernal pools of northeastern California

Meredith C Gosejohan1, Peter J Weisberg2*, Kyle E Merriam3

1Susanville Indian Rancheria, 745 Joaquin Street, Susanville, CA 96130, USA

2Department of Natural Resources and Environmental Science, University of Nevada, Reno, 1664 N. Virginia Street, Mail Stop 0186, Reno, NV, 89557, USA

3USDA Forest Service, Plumas National Forest, 159 Lawrence Street, Quincy, CA, 95971, USA

*Corresponding Author: Peter J. Weisberg, , phone: 775-784-7573, fax: 775-784-4583

Appendix S1. Examples of stage gauge photographs that were used to determine inundation period and maximum depth.

Appendix S1. Continued

Appendix S2. Plant species (n = 116) identified in the two vernal pool study areas. Listed are scientific and common names, duration of growth (Duration), lifeform, and site where the species was identified (Adobe North, NE Coyote, or Both).

Scientific Name / Common Name / Duration / Lifeform / Site
Achnatherum sp. / needlegrass / perennial / graminoid / Adobe North
Achillea millefolium L. / common yarrow / perennial / forb/herb / NE Coyote
Agoseris glauca (Pursh) Raf. / pale agoseris / perennial / forb/herb / NE Coyote
Agoseris grandiflora (Nutt.) Greene / bigflower agoseris / perennial / forb/herb / Adobe North
Agoseris heterophylla (Nutt.) Greene / annual agoseris / annual / forb/herb / Both
Alopecurus geniculatus L. / water foxtail / perennial / graminoid / Adobe North
Alopecurus saccatus Vasey / Pacific foxtail / annual / graminoid / Adobe North
Antennaria dimorpha (Nutt.) Torr. & A. Gray / low pussytoes / perennial / subshrub / NE Coyote
Antennaria sp. / pussytoes / perennial / subshrub / NE Coyote
Apocynum androsaemifolium L. / spreading dogbane / perennial / forb/herb / Adobe North
Apera interrupta (L.) P. Beauv / dense silkybent / annual / graminoid / NE Coyote
Arctostaphylos patula Greene / greenleaf manzanita / perennial / shrub / Adobe North
Artemisia tridentata Nutt. / big sagebrush / perennial / shrub / NE Coyote
Asclepias fascicularis Decne. / Mexican whorled milkweed / perennial / forb/herb / Adobe North
Athysanus pusillus (Hook.) Greene / common sandweed / annual / forb/herb / Adobe North
Blepharipappus scaber Hook. / rough eyelashweed / annual / forb/herb / Adobe North
Brodiaea coronaria (Salisb.) Engl. subsp. coronaria / crown brodiaea / perennial / forb/herb / Both
Bromus hordeaceus L. / soft brome / annual / graminoid / Both
Bromus tectorum L. / cheatgrass / annual / graminoid / Both
Castilleja campestris (Benth.) T. I. Chuang & Heckard subsp. campestris / vernal pool indian paintbrush / annual / forb/herb / NE Coyote
Calocedrus decurrens (Torr.) Florin / incense cedar / perennial / tree / Adobe North
Carex douglasii Boott / Douglas' sedge / perennial / graminoid / NE Coyote
Calycadenia sp. / western rosinweed / annual / forb/herb / Adobe North
Ceanothus cuneatus (Hook.) Nutt. / buckbrush / perennial / shrub / Adobe North
Ceanothus prostratus Benth. / prostrate ceanothus / perennial / shrub; subshrub / Adobe North
Chenopodium sp. / goosefoot / annual / forb/herb / Adobe North
Euphorbia serpyllifolia Pers. / thymeleaf sandmat / annual / forb/herb / Adobe North
Claytonia rubra (Howell) Tidestr. / redstem springbeauty / annual / forb/herb / NE Coyote
Convolvulus arvensis L. / field bindweed / perennial / vine; forb/herb / Adobe North
Collomia grandiflora Douglas ex Lindl. / grand collomia / annual / forb/herb / Adobe North
Collinsia parviflora Lindl. / maiden blue eyed Mary / annual / forb/herb / Both
Croton setigerus Hook. / dove weed / annual / forb/herb / Both
Cuscuta howelliana P. Rubtzoff / Boggs Lake dodder / annual / vine; forb/herb / Both
Cyperus squarrosus L. / bearded flatsedge / annual / graminoid / NE Coyote
Damasonium californicum Torr. ex Benth. / California damsonium / perennial / forb/herb / Adobe North
Danthonia unispicata (Thurb.) Munro ex Vasey / onespike danthonia / perennial / graminoid / Both
Deschampsia cespitosa (L.) P. Beauv. / tufted hairgrass / perennial / graminoid / NE Coyote
Deschampsia danthonioides (Trin.) Munro / annual hairgrass / annual / graminoid / Both
Delphinium sp. / larkspur / perennial / forb/herb / Adobe North
Downingia bacigalupii Weiler / Bach's calicoflower / annual / forb/herb / Both
Downingia bicornuta A. Gray / doublehorn calicoflower / annual / forb/herb / Both
Draba verna L. / spring draba / annual / forb/herb / Both
Eleocharis acicularis (L.) Roem. & Schult. var. bella Piper / beautiful spikerush / annual; perennial / graminoid / Both
Elymus elymoides (Raf.) Swezey / squirreltail / perennial / graminoid / Both
Eleocharis macrostachya Britton / pale spikerush / perennial / graminoid / Both
Epilobium brachycarpum C. Presl / tall annual willowherb / annual / forb/herb / Both
Epilobium densiflorum (Lindl.) Hoch & P. H. Raven / dense willowherb / annual / forb/herb / Both
Epilobium torreyi (S. Watson) Hoch & P. H. Raven / Torrey's willowherb / annual / forb/herb / NE Coyote
Erigeron eatonii A. Gray var. sonnei (Greene) G. L. Nesom / Eaton's fleabane / perennial / forb/herb / Both
Eryngium mathiasiae M. Y. Sheikh / Mathias' eryngo / perennial / forb/herb / Both
Eriogonum umbellatum Torr. / sulfur-flower buckwheat / perennial / subshrub; shrub / Adobe North
Festuca idahoensis Elmer / Idaho fescue / perennial / graminoid / Both
Gayophytum racemosum Torr. & A. Gray / blackfoot groundsmoke / annual / forb/herb / NE Coyote
Gnaphalium palustre Nutt. / western marsh cudweed / annual / forb/herb / Both
Gratiola ebracteata Benth. ex A.DC. / bractless hedgehyssop / annual / forb/herb / NE Coyote
Gratiola heterosepala H. Mason & Bacig. / Boggs Lake hedgehyssop / annual / forb/herb / NE Coyote
Grindelia nana Nutt. / Idaho gumweed / perennial / forb/herb / Adobe North
Helianthus bolanderi A. Gray / serpentine sunflower / annual / forb/herb / Adobe North
Hordeum brachyantherum Nevski / meadow barley / perennial / graminoid / Adobe North
Hordeum marinum Huds. / Mediterranean barley / annual / graminoid / NE Coyote
Isoetes howellii Engelm. / Howell's quillwort / perennial / graminoid / NE Coyote
Juncus bufonius L. var. occidentalis F. J. Herm. / toadrush / annual / graminoid / Both
Juncus effusus L. / common rush / perennial / graminoid / NE Coyote
Juncus hemiendytus F. J. Herm. / Herman's dwarf rush / annual / graminoid / Both
Juncus sp. / rush / perennial / graminoid / NE Coyote
Juncus occidentalis (Coville) Wiegand / western juniper / perennial / tree / Both
Koeleria macrantha (Ledeb.) Schult. / prairie junegrass / perennial / graminoid / NE Coyote
Lagophylla ramosissima Nutt. subsp. ramosissima / branched lagophylla / annual / forb/herb / Adobe North
Lactuca serriola L. / prickly lettuce / annual; biennial / forb/herb / Both
Lathyrus sp. / pea / annual; perennial / vine; forb/herb / Adobe North
Leptosiphon harknessii (Curran) J. M. Porter & L. A. Johnson / Harkeness' flaxflower / annual / forb/herb / NE Coyote
Lepidium sp. / pepperweed / annual / forb/herb / Adobe North
Leymus sp. / wildrye / perennial / graminoid / Adobe North
Lonicera interrupta Benth. / chaparral honeysuckle / perennial / vine; shrub / Adobe North
Lomatium sp. / desertparsley / perennial / forb/herb / NE Coyote
Lomatium nudicaule (Pursh) J. M. Coult. & Rose / barestem biscuitroot / perennial / forb/herb / Adobe North
Acmispon americanus (Nutt.) Rydb. / American bird's-foot trefoil / annual / forb/herb / Both
Acmispon wrangelianus (Fisch. & C. A. Mey.) D. D. Sokoloff / Chilean bird's-foot trefoil / annual / forb/herb / Adobe North
Lupinus sp. / lupine / perennial / forb/herb / NE Coyote
Madia exigua (Sm.) A. Gray / small tarweed / annual / forb/herb / NE Coyote
Madia glomerata Hook. / mountain tarweed / annual / forb/herb / Adobe North
Marsilea oligospora Goodd. / Pacific waterclover / perennial / forb/herb / NE Coyote
Microsteris gracilis (Hook.) Greene / slender phlox / annual / graminoid / Both
Mimulus tricolor Hartw. ex Lindl. / tricolor monkeyflower / annual / forb/herb / Adobe North
Montia linearis (Hook.) Greene / narrowleaf minerslettuce / annual / forb/herb / Both
Myosurus minimus L. / tiny mousetail / annual / forb/herb / Both
Navarretia intertexta (Benth.) Hook. / needleleaf navarretia / annual / forb/herb / Both
Navarretia leucocephala Benth. / whitehead navarretia / annual / forb/herb / Both
Orcuttia tenuis Hitchc. / slender Orcutt grass / annual / graminoid / Both
Pilularia americana A. Braun / American pillwort / perennial / forb/herb / Both
Pinus ponderosa Douglas ex Lawson & C. Lawson / ponderosa pine / perennial / tree / Both
Plagiobothrys stipitatus (Greene) I. M. Johnst. / stalked popcornflower / annual / forb/herb / Both
Polygonum aviculare L. subsp. depressum (Meisn.) Arcang. / oval-leaf knotweed / annual / forb/herb / NE Coyote
Poa bulbosa L. / bulbous bluegrass / perennial / graminoid / NE Coyote
Polygonum douglasii Greene / Douglas' knotweed / annual / forb/herb / NE Coyote
Poa palustris L. / fowl bluegrass / perennial / graminoid / Adobe North
Polygonum polygaloides Meisn. subsp. confertiflorum (Nutt. ex Piper) J. C. Hickman / fruitleaf knotweed / annual / forb/herb / Both
Poa secunda J. Presl / Sandberg bluegrass / perennial / graminoid / NE Coyote
Pogogyne zizyphoroides Benth. / Sacramento mesamint / annual / forb/herb / Both
Prunus subcordata Benth. / Klamath plum / perennial / shrub; tree / Adobe North
Psilocarphus brevissimus Nutt. / short woollyheads / annual / forb/herb / Both
Purshia tridentata (Pursh) DC. / antelope bitterbrush / perennial / shrub / Adobe North
Quercus garryana Hook. / Oregon whiteoak / perennial / tree / Adobe North
Ranunculus occidentalis Nutt. / western buttercup / perennial / forb/herb / Both
Rhus trilobata Nutt. / skunkbush sumac / perennial / shrub / Adobe North
Rosa woodsii Lindl. / Woods' rose / perennial / subshrub / Adobe North
Rumex crispus L. / curly dock / perennial / forb/herb / Adobe North
Poteridium annuum (Nutt.) Spach / prairie burnet / annual/perennial / forb/herb / Both
Sidalcea oregana (Torr. & A. Gray) A. Gray / Oregon checkerbloom / perennial / forb/herb / NE Coyote
Elymus caput-medusae L. / medusahead / annual / graminoid / Adobe North
Thermopsis californica S. Watson / California goldbanner / perennial / forb/herb / Adobe North
Tragopogon dubius Scop. / yellow salsify / annual/biennial / forb/herb / Adobe North
Triteleia hyacinthina (Lindl.) Greene / white brodiaea / perennial / forb/herb / NE Coyote
Trichostema oblongum Benth. / oblong bluecurls / annual / forb/herb / Both
Veronica peregrina L. subsp. xalapensis (Kunth) Pennell / hairy purslane speedwell / annual / forb/herb / Both
Festuca microstachys Nutt. / small fescue / annual / graminoid / Both

Appendix S3. Plots in ordination space grouped by site location at Coyote Springs and Adobe North vernal pool study sites.

Appendix S4. Video created from daily photographs showing Adobe North vernal pool hydroperiod and precipitation events. (See file Appendix S4.Adobe North VP Video.wma)