S an Marcos River: Native Riparian Habitat Restoration Habitat Conservation Plan Eric Weeks
Riparian Habitat Restoration - Purpose Removal of invasive species helps to restore the ecosystem to its natural state and promotes the survival of native species. Larger invasives are used as terracing/ mulch to stabilize soil and reduce erosion. Native plantings provides a more diverse habitat and helps stabilize the bank. Prohibitive thorny plants are used as a natural barrier to reduce erosion from foot traffic. Water Quality plantings act as natural buffers filtering chemicals and toxins from runoff before entering the river.
Identify River Access Points Fence area between access points as restoration areas
Remove and Treat Exotic Invasive S pecies Chinese tallow Chinaberry Chinese privet Ligustrum Paper mulberry Japanese honeysuckle Johnson grass Elephant Ear
Add Erosion Control & Restrictive Access Plantings The invasives removed are used as terraces and as mulch Mulch socks are added as needed Plants with high erosion control value are added (switch grass) HTC Overview City Park
Plant natives or Allow Nature to Take Over US FWS collects seeds locally to grow the plants that are added to the banks Prohibitives are added near the edge of fence to discourage access HTC, volunteer planting days and interns.
Riparian/ WQ Buffer Plant List Nolina Muhlenbergia Sugarberry / Honey Prosopis Devil's Box elder Acer negundo Muhly grass Celtis laevigata Berberis lindheimeria capillaris hackberry mesquite glandulosa shoestring trifoliolata na Agarita Acacia Panicum Brasil Condalia hookeri Osage Orange Maclura pomifera Huisache Switchgrass farrnesiana Rubus virgatum Alamo Vine Merremia Dewberry trivialis Broadleaf Chasmanthium Pecan Carya illinoinensis Platanus dissecta Illinois Potamogeton Sycamore woodoats latifolium Dwarf occidentalis pondweed illinoensis American Ulmus Sabal minor Coreopsis palmetto Plains coreopsis Fraxinus tinctoria elm americana Cucurbita Sorghastrum Texas ash Eastern Tripsacum Indian Grass Buffalo Gourd texensis foetidissima nutans American Possum-haw Ilex decidua gamagrass dactyloides Justicia Texas cupgrass Eriochloa water Quercus Inland Sea Chasmanthium Sambucus Parkinsonia americana Bur oak sericae Elderberry macrocarpa Retama Oats latifolium willow canadensis aculeata Texas lantana Lantana Ehretia Andropogon Emory's Carex Anacua Bushy bluestem Parkinsonia urticoides Eysenhardtia glomeratus Retama + Ash anacua Kidneywood sedge emoryi aculeata + texana Texas Juniper Evergreen Sophora Arrowhead Sagittaria Juniperus ashei Cephalanthus Rhus virens mountain Lime prickly Zanthoxylum Buttonbush sumac secundiflora platyphylla occidentalis laurel ash fagara Rice cutgrass Leersia oryzoides Texas Diospyros Ash Fraxinus sp. Lindheimer Muhlenbergia Camphor weed Pluchea odorata Eve's Sophora Rough leaf Cornus persimmon texana muhly lindheimeri dogwood drummondii necklace affins Ashe Juniperus Texas red oak Quercus Catalpa Catalpa speciosa Viburnam juniper ashei Rusty blackhaw Little bluestem Schizachyrium buckleyi False indigo Amorpha rufidulum Cats claw Mimosa scoparium Bald Taxodium bush fruticosa Cladium mimosa biancifera Texas winter Nassella Sawgrass cypress distichum jamaicense Quercus grass leucotricha False nettle Boehmeria Live oak Cedar elm Ulmus crassifolia Bear grass Nolina virginiana Shiny Sumac Rhus lanceolata cylindrica Prosopis Zanthoxylum texana Mesquite Tickle tongue Flameleaf Rhus Quercus glandulosa hirsutum Beautyberry Callicarpa Chinquapin oak meuhlenbergii Sumac lanceolata Shiny sumac Mexican Ungnadia Rhus trilobata americana Tx Mountain Sophora Fragrant Mimosa (skunkbush) buckeye speciosa Common green Smilax Big Andropogo Laurel secundiflora mimosa borealis Mexican Palm Sabal brier rotundifolia Bluestem n gerardi mexicana Shrubby Giant Zizaniopsis Hemia salicifolia Ptelea Cottonwood Populus deltoides Yellowcrest Mexican plum Prunus Black Junglans Wafer ash cutgrass miliacea trifoliolata mexicana walnut nigra Fraxinus Side-oats gamma Bouteloua Cottonwood Populus deltoides Western Sapindus curtipendula Green ash pennsylvani Cercis Black willow Salix nigra Mexican soapberry saponaria ca canadensis Creeping redbud Blazing Star Liatris Primrose Willow Ludwigia repens var. mexicana Snow on the Euphorbia Hairy Andropogon Yaupon holly Ilex vomitoria Mountain marginata mucronata Gramma hirsuta Crow-foot caric Mountain Sophora Yellow indian Sorghastrum Blue Bouteloua Sapindus Carex crus-corvi Colubrina sedge Laurel secundiflora Soapberry Hog plum grass nutans saponaria gamma gracilis texensis
Water/ Irrigation University & City taps TCEQ Water Permits Water Tanks Buckets & Pitchers New strategy due to limited availability of water: Prohibitive zone – xeric thorny WQ zone – terrestrial (seed) Area along river plantings Thorny restrictive plantings grow very well with minimal water
Control/ Maintain Invasive Regrowth Large seedbanks and extensive root systems Most areas are densely planted, so treating regrowth is a challenge EBR Overview Spring Lake
Upper S ewell Park Contour Terracing Native Plantings S ummer 2015 above Fall 2013 S pring 2014
Upper Rio Vista Terracing & Mulch Winter 2014 Invasive Removal Fall 2014 Native Plantings S ummer 2015
Upper Rio Vista Fall 2014 February 2014 S ummer 2015
Rio Vista Gardens Before After
Lower Rio Vista Native Plantings Invasive Removal S ummer 2015 above S pring 2015 Fall 2014
Questions? Eweeks@ sanmarcostx.gov
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