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Field Trip: Lawther-Deer Park Prairie

October 12 @ 9:00 am 11:00 am

Meeting Location: Registration is required and limited space is available. The location will be sent to registered participants only. Email Della_Barbato@TexasPrairie.org to register.  She will e-mail you a liability waiver and important parking instructions.

Things To Bring: We will wander off trail, so boots/closed toe shoes and bug spray recommended. There
are some wetlands, and since your leader is a wetland ecologist he likely is going to want to get wet to
see fun species such as powdery thalia (Thalia dealbata). Follow at your own risk (you should do it – why
not?). Please bring adequate hydration and other items you may require to be comfortable. We will be in
full sun the entire time, so dress appropriately.

Field Trip Overview: Please at some point, find out the conservation story of this 51 acre property, it
speaks accolades of many people and groups who came together to preserve a jewel of the habitat type
that used to dominate the Greater Houston Area. This is called a “platinum prairie” with over 400 plant
species identified. In depth information provided by Singhurst et al. in The Vascular Flora and Plant
Communities of Lawther-Deer Park Prairie, Harris County, Texas, USA (link below). As Singhurst et al.
points out there are six distinctive vegetation communities present within the area. Plant species
representation include Grasses (84 species), Sunflowers (68 species), Sedges (33 species) and
Legumes (19 species). Since your leader is a grass and sedge nerd- we will focus on finding some
uncommon species to the area such as slender bluestem (Schizachyrium tenerum), Pineywoods
dropseed (Sporobolus junceus), purple silkyscale (Anthenantia rufa), Texas windmill grass (Chloris
texensis), and Georgia nutrush (Scleria georgiana- one of leader’s favorites, has cool iridescent pits on
achene [seed]). It may be a week or two early, but we may find nodding ladies tresses (Spiranthes
cernua). From a conservation perspective, we will discuss how these areas are key to preserving diversity and genetics and can be utilized to promote future restoration efforts. Additionally, we may also discuss management limitations of areas like this (e.g. difficulty burning/grazing, invasive pathways, woody encroachment, etc.).

Singhurst et al Paper: https://texasprairie.org/wp-content/uploads/2019/06/Flora-and-plant-coummunities-of-Deer-Park-Prairie.pdf

Additional Site Information: https://texasprairie.org/deerpark/

Leader Bio: Andy Newman is the Chief Ecologist at The Earth Partners and has 15 years’ experience
working within diverse ecosystems for a wide array of project types. His position places an emphasis
leading the technical ecological restoration of projects, managing construction and adaptive management, and helping clients meet their compensatory mitigation requirements. His background includes environmental restoration planning, stakeholder engagement, construction, planting, and ecological uplift assessment. Andy’s specialties include aquatic feature delineations and jurisdictional determinations, Clean Water Act permitting, threatened and endangered species identification and consultations, NEPA compliance, plant identification, and community classification. His favorite ecosystems include longleaf pine savannas, coastal prairies, and southern Appalachian forests.

Additional Coordination Details: Please contact Bob Romero for any further coordination details at
bobromero@gmail.com or by phone at (713) 248-6030.

Photo Credit: Suzanne Simpson

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About the Region

New Braunfels, the location of our Fall 2024 Symposium, straddles both the Edwards Plateau Ecoregion and the Blackland Prairie ecoregion. Interstate 35 divides the city of New Braunfels; its path through the city closely parallels the boundary of these two ecoregions, with the Edwards Plateau on the west side and the Blackland Prairies region to the east. The Edwards Plateau area is also called the Hill Country; however, this general term covers a much larger area extending farther north. Spring-fed creeks are found throughout the region; deep limestone canyons, rivers, and lakes (reservoirs) are common. Ashe juniper is perhaps the most common woody species found throughout the region. Additional woody species include various species of oak, with live oak (Quercus fusiformis) being the most common. Sycamores (Platanus occidentalis) and bald cypress (Taxodium distichum) border waterways. This area is well known for its spring wildflower displays, though they may be viewed in spring, late summer, and fall, as well. According to Texas Parks and Wildlife, average annual rainfall in the Edwards Plateau ranges from 15 to 34 inches.

The Blackland Prairie extends from the Red River south to San Antonio, bordered on the west by the Edwards Plateau and the Cross Timbers, and on the east by the Post Oak Savannah. Annual rainfall averages 30 to 40 inches, with higher averages to the east. This region is dominated by prairie species. The most common grass species include little bluestem (Schizachyrium scoparium) and Indian grass (Sorghastrum nutans) in the uplands and switchgrass (Panicum virgatum) in the riparian areas and drainages. Common herbaceous flowering plants include salvias, penstemons, and silphiums. This area has suffered greatly from overgrazing and agricultural use. Few intact areas remain, though many of the plants can be found along county roadsides throughout the region.

Our four host chapters (New Braunfels, Lindheimer, Guadalupe, and the Hill Country chapters) are located in one or both of the ecoregions above. However, the eastern portion of Guadalupe County also falls within the Post Oak Savanna ecoregion. Annual rainfall averages 35 to 45 inches, with higher averages to the east. A wide variety of hardwood trees are found, including several species of oaks, elms, and in the Bastrop area, loblolly pine (Pinus taeda). Grasses and forbs dominate in the open savannas, with most common grass being little bluestem. Ranching, agriculture, and fire suppression have allowed woody species to encroach on the once-open savannas.

Source: Wildflowers of Texas by Michael Eason